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提供博主所有的 LeetCode 的解题代码和中文讲解。
与博客园上相同: LeetCode All in One 题目讲解汇总(持续更新中...)
Note: 所有的讲解写在了 GitHub Issue 上面, 请不要在本项目中新建任何的 Issue 或者 Pull Request，因为博主希望题目编号和 Issue 编号保持一致，多谢！
('$' 代表锁住的题目, '*' 代表数据库类题目, '#' 代表脚本类题目, '~' 代表并行类题目。)
| # | Title | Solution | Difficulty |
|---|---|---|---|
| 1352 | Product of the Last K Numbers | 50.20% | Medium |
| 1351 | Count Negative Numbers in a Sorted Matrix | 77.30% | Easy |
| 1350 | Students With Invalid Departments * $ | 89.90% | Easy |
| 1349 | Maximum Students Taking Exam | 49.80% | Hard |
| 1348 | Tweet Counts Per Frequency | 44.00% | Medium |
| 1347 | Minimum Number of Steps to Make Two Strings Anagram | 78.00% | Medium |
| 1346 | Check If N and Its Double Exist | 36.70% | Easy |
| 1345 | Jump Game IV | 46.60% | Hard |
| 1344 | Angle Between Hands of a Clock | 63.40% | Medium |
| 1343 | Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold | 68.10% | Medium |
| 1342 | Number of Steps to Reduce a Number to Zero | 84.90% | Easy |
| 1341 | Movie Rating * | 43.80% | Medium |
| 1340 | Jump Game V | 62.60% | Hard |
| 1339 | Maximum Product of Splitted Binary Tree | 47.70% | Medium |
| 1338 | Reduce Array Size to The Half | 69.20% | Medium |
| 1337 | The K Weakest Rows in a Matrix | 71.40% | Easy |
| 1336 | Number of Transactions per Visit * | 48.10% | Hard |
| 1335 | Minimum Difficulty of a Job Schedule | 58.30% | Hard |
| 1334 | Find the City With the Smallest Number of Neighbors at a Threshold Distance | 57.70% | Medium |
| 1333 | "Filter Restaurants by Vegan-Friendly | Price and Distance" | 60.50% |
| 1332 | Remove Palindromic Subsequences | 76.20% | Easy |
| 1331 | Rank Transform of an Array | 59.80% | Easy |
| 1330 | Reverse Subarray To Maximize Array Value | 41.30% | Hard |
| 1329 | Sort the Matrix Diagonally | 83.00% | Medium |
| 1328 | Break a Palindrome | 52.10% | Medium |
| 1327 | List the Products Ordered in a Period * | 71.90% | Easy |
| 1326 | Minimum Number of Taps to Open to Water a Garden | 51.60% | Hard |
| 1325 | Delete Leaves With a Given Value | 74.40% | Medium |
| 1324 | Print Words Vertically | 62.40% | Medium |
| 1323 | Maximum 69 Number | 82.00% | Easy |
| 1322 | Ads Performance * $ | 60.10% | Easy |
| 1321 | Restaurant Growth * | 53.40% | Medium |
| 1320 | Minimum Distance to Type a Word Using Two Fingers | 59.80% | Hard |
| 1319 | Number of Operations to Make Network Connected | 58.50% | Medium |
| 1318 | Minimum Flips to Make a OR b Equal to c | 66.00% | Medium |
| 1317 | Convert Integer to the Sum of Two No-Zero Integers | 56.00% | Easy |
| 1316 | Distinct Echo Substrings | 49.70% | Hard |
| 1315 | Sum of Nodes with Even-Valued Grandparent | 85.60% | Medium |
| 1314 | Matrix Block Sum | 75.40% | Medium |
| 1313 | Decompress Run-Length Encoded List | 85.90% | Easy |
| 1312 | Minimum Insertion Steps to Make a String Palindrome | 65.70% | Hard |
| 1311 | Get Watched Videos by Your Friends | 45.90% | Medium |
| 1310 | XOR Queries of a Subarray | 72.20% | Medium |
| 1309 | Decrypt String from Alphabet to Integer Mapping | 79.50% | Easy |
| 1308 | Running Total for Different Genders * $ | 88.20% | Medium |
| 1307 | Verbal Arithmetic Puzzle | 34.80% | Hard |
| 1306 | Jump Game III | 63.10% | Medium |
| 1305 | All Elements in Two Binary Search Trees | 79.80% | Medium |
| 1304 | Find N Unique Integers Sum up to Zero | 77.10% | Easy |
| 1303 | Find the Team Size * $ | 90.80% | Easy |
| 1302 | Deepest Leaves Sum | 86.90% | Medium |
| 1301 | Number of Paths with Max Score | 38.70% | Hard |
| 1300 | Sum of Mutated Array Closest to Target | 43.10% | Medium |
| 1299 | Replace Elements with Greatest Element on Right Side | 74.70% | Easy |
| 1298 | Maximum Candies You Can Get from Boxes | 60.90% | Hard |
| 1297 | Maximum Number of Occurrences of a Substring | 52.00% | Medium |
| 1296 | Divide Array in Sets of K Consecutive Numbers | 56.60% | Medium |
| 1295 | Find Numbers with Even Number of Digits | 77.00% | Easy |
| 1294 | Weather Type in Each Country * $ | 68.00% | Easy |
| 1293 | Shortest Path in a Grid with Obstacles Elimination | 45.60% | Hard |
| 1292 | Maximum Side Length of a Square with Sum Less than or Equal to Threshold | 52.10% | Medium |
| 1291 | Sequential Digits | 60.90% | Medium |
| 1290 | Convert Binary Number in a Linked List to Integer | 82.70% | Easy |
| 1289 | Minimum Falling Path Sum II | 61.20% | Hard |
| 1288 | Remove Covered Intervals | 57.40% | Medium |
| 1287 | Element Appearing More Than 25% In Sorted Array | 59.50% | Easy |
| 1286 | Iterator for Combination | 73.20% | Medium |
| 1285 | Find the Start and End Number of Continuous Ranges * $ | 88.30% | Medium |
| 1284 | Minimum Number of Flips to Convert Binary Matrix to Zero Matrix | 72.00% | Hard |
| 1283 | Find the Smallest Divisor Given a Threshold | 53.70% | Medium |
| 1282 | Group the People Given the Group Size They Belong To | 85.20% | Medium |
| 1281 | Subtract the Product and Sum of Digits of an Integer | 86.30% | Easy |
| 1280 | Students and Examinations * $ | 74.60% | Easy |
| 1279 | Traffic Light Controlled Intersection ~ $ | 75.30% | Easy |
| 1278 | Palindrome Partitioning III | 60.90% | Hard |
| 1277 | Count Square Submatrices with All Ones | 74.20% | Medium |
| 1276 | Number of Burgers with No Waste of Ingredients | 50.60% | Medium |
| 1275 | Find Winner on a Tic Tac Toe Game | 54.90% | Easy |
| 1274 | Number of Ships in a Rectangle $ | 68.60% | Hard |
| 1273 | Delete Tree Nodes $ | 61.20% | Medium |
| 1272 | Remove Interval $ | 61.10% | Medium |
| 1271 | Hexspeak $ | 56.30% | Easy |
| 1270 | All People Report to the Given Manager * $ | 88.10% | Medium |
| 1269 | Number of Ways to Stay in the Same Place After Some Steps | 43.40% | Hard |
| 1268 | Search Suggestions System | 65.40% | Medium |
| 1267 | Count Servers that Communicate | 58.30% | Medium |
| 1266 | Minimum Time Visiting All Points | 79.20% | Easy |
| 1265 | Print Immutable Linked List in Reverse $ | 94.30% | Medium |
| 1264 | Page Recommendations * $ | 67.70% | Medium |
| 1263 | Minimum Moves to Move a Box to Their Target Location | 48.30% | Hard |
| 1262 | Greatest Sum Divisible by Three | 50.80% | Medium |
| 1261 | Find Elements in a Contaminated Binary Tree | 75.70% | Medium |
| 1260 | Shift 2D Grid | 62.10% | Easy |
| 1259 | Handshakes That Don't Cross $ | 54.40% | Hard |
| 1258 | Synonymous Sentences $ | 57.40% | Medium |
| 1257 | Smallest Common Region $ | 62.10% | Medium |
| 1256 | Encode Number $ | 69.00% | Medium |
| 1255 | Maximum Score Words Formed by Letters | 71.30% | Hard |
| 1254 | Number of Closed Islands | 62.70% | Medium |
| 1253 | Reconstruct a 2-Row Binary Matrix | 42.70% | Medium |
| 1252 | Cells with Odd Values in a Matrix | 78.50% | Easy |
| 1251 | Average Selling Price * $ | 83.20% | Easy |
| 1250 | Check If It Is a Good Array | 57.50% | Hard |
| 1249 | Minimum Remove to Make Valid Parentheses | 65.00% | Medium |
| 1248 | Count Number of Nice Subarrays | 57.60% | Medium |
| 1247 | Minimum Swaps to Make Strings Equal | 63.60% | Medium |
| 1246 | Palindrome Removal $ | 45.80% | Hard |
| 1245 | Tree Diameter $ | 62.00% | Medium |
| 1244 | Design A Leaderboard $ | 67.30% | Medium |
| 1243 | Array Transformation $ | 50.10% | Easy |
| 1242 | Web Crawler Multithreaded ~ $ | 48.20% | Medium |
| 1241 | Number of Comments per Post * $ | 68.00% | Easy |
| 1240 | Tiling a Rectangle with the Fewest Squares | 52.40% | Hard |
| 1239 | Maximum Length of a Concatenated String with Unique Characters | 50.70% | Medium |
| 1238 | Circular Permutation in Binary Representation | 67.90% | Medium |
| 1237 | Find Positive Integer Solution for a Given Equation | 69.70% | Medium |
| 1236 | Web Crawler $ | 65.40% | Medium |
| 1235 | Maximum Profit in Job Scheduling | 50.50% | Hard |
| 1234 | Replace the Substring for Balanced String | 35.50% | Medium |
| 1233 | Remove Sub-Folders from the Filesystem | 64.50% | Medium |
| 1232 | Check If It Is a Straight Line | 42.30% | Easy |
| 1231 | Divide Chocolate $ | 55.50% | Hard |
| 1230 | Toss Strange Coins $ | 50.80% | Medium |
| 1229 | Meeting Scheduler $ | 54.70% | Medium |
| 1228 | Missing Number In Arithmetic Progression $ | 51.20% | Medium |
| 1227 | Airplane Seat Assignment Probability | 63.00% | Medium |
| 1226 | The Dining Philosophers ~ | 60.20% | Medium |
| 1225 | Report Contiguous Dates * | 63.80% | Hard |
| 1224 | Maximum Equal Frequency | 36.20% | Hard |
| 1223 | Dice Roll Simulation | 47.40% | Hard |
| 1222 | Queens That Can Attack the King | 70.20% | Medium |
| 1221 | Split a String in Balanced Strings | 84.60% | Easy |
| 1220 | Count Vowels Permutation | 56.60% | Hard |
| 1219 | Path with Maximum Gold | 66.10% | Medium |
| 1218 | Longest Arithmetic Subsequence of Given Difference | 48.10% | Medium |
| 1217 | Minimum Cost to Move Chips to The Same Position | 70.70% | Easy |
| 1216 | Valid Palindrome III $ | 50.80% | Hard |
| 1215 | Stepping Numbers $ | 44.60% | Medium |
| 1214 | Two Sum BSTs $ | 67.30% | Medium |
| 1213 | Intersection of Three Sorted Arrays $ | 79.80% | Easy |
| 1212 | Team Scores in Football Tournament * | 57.00% | Medium |
| 1211 | Queries Quality and Percentage * | 70.40% | Easy |
| 1210 | Minimum Moves to Reach Target with Rotations | 47.50% | Hard |
| 1209 | Remove All Adjacent Duplicates in String II | 56.40% | Medium |
| 1208 | Get Equal Substrings Within Budget | 45.30% | Medium |
| 1207 | Unique Number of Occurrences | 72.40% | Easy |
| 1206 | Design Skiplist | 59.60% | Hard |
| 1205 | Monthly Transactions II * | 45.30% | Medium |
| 1204 | Last Person to Fit in the Bus * | 73.00% | Medium |
| 1203 | Sort Items by Groups Respecting Dependencies | 48.80% | Hard |
| 1202 | Smallest String With Swaps | 50.50% | Medium |
| 1201 | Ugly Number III | 27.20% | Medium |
| 1200 | Minimum Absolute Difference | 67.30% | Easy |
| 1199 | Minimum Time to Build Blocks $ | 39.40% | Hard |
| 1198 | Find Smallest Common Element in All Rows $ | 76.30% | Medium |
| 1197 | Minimum Knight Moves $ | 38.60% | Medium |
| 1196 | How Many Apples Can You Put into the Basket $ | 68.30% | Easy |
| 1195 | Fizz Buzz Multithreaded ~ | 71.40% | Medium |
| 1194 | Tournament Winners * | 52.70% | Hard |
| 1193 | Monthly Transactions I * | 68.70% | Medium |
| 1192 | Critical Connections in a Network | 51.80% | Hard |
| 1191 | K-Concatenation Maximum Sum | 24.60% | Medium |
| 1190 | Reverse Substrings Between Each Pair of Parentheses | 65.00% | Medium |
| 1189 | Maximum Number of Balloons | 62.00% | Easy |
| 1188 | Design Bounded Blocking Queue ~ | 73.20% | Medium |
| 1187 | Make Array Strictly Increasing | 43.80% | Hard |
| 1186 | Maximum Subarray Sum with One Deletion | 39.80% | Medium |
| 1185 | Day of the Week | 59.90% | Easy |
| 1184 | Distance Between Bus Stops | 53.90% | Easy |
| 1183 | Maximum Number of Ones $ | 58.70% | Hard |
| 1182 | Shortest Distance to Target Color $ | 54.30% | Medium |
| 1181 | Before and After Puzzle $ | 44.70% | Medium |
| 1180 | Count Substrings with Only One Distinct Letter $ | 78.30% | Easy |
| 1179 | Reformat Department Table * | 82.10% | Easy |
| 1178 | Number of Valid Words for Each Puzzle | 40.80% | Hard |
| 1177 | Can Make Palindrome from Substring | 36.50% | Medium |
| 1176 | Diet Plan Performance $ | 53.50% | Easy |
| 1175 | Prime Arrangements | 51.90% | Medium |
| 1174 | Immediate Food Delivery II * | 63.10% | Medium |
| 1173 | Immediate Food Delivery I * | 83.10% | Easy |
| 1172 | Dinner Plate Stacks | 36.40% | Hard |
| 1171 | Remove Zero Sum Consecutive Nodes from Linked List | 41.90% | Medium |
| 1170 | Compare Strings by Frequency of the Smallest Character | 60.60% | Medium |
| 1169 | Invalid Transactions | 30.40% | Medium |
| 1168 | Optimize Water Distribution in a Village $ | 62.30% | Hard |
| 1167 | Minimum Cost to Connect Sticks $ | 65.70% | Medium |
| 1166 | Design File System $ | 59.00% | Medium |
| 1165 | Single-Row Keyboard $ | 85.50% | Easy |
| 1164 | Product Price at a Given Date * | 69.00% | Medium |
| 1163 | Last Substring in Lexicographical Order | 36.00% | Hard |
| 1162 | As Far from Land as Possible | 46.60% | Medium |
| 1161 | Maximum Level Sum of a Binary Tree | 67.50% | Medium |
| 1160 | Find Words That Can Be Formed by Characters | 67.80% | Easy |
| 1159 | Market Analysis II * | 57.00% | Hard |
| 1158 | Market Analysis I * | 65.00% | Medium |
| 1157 | Online Majority Element In Subarray | 41.60% | Hard |
| 1156 | Swap For Longest Repeated Character Substring | 47.20% | Medium |
| 1155 | Number of Dice Rolls With Target Sum | 47.70% | Medium |
| 1154 | Day of the Year | 50.10% | Easy |
| 1153 | String Transforms Into Another String $ | 35.60% | Hard |
| 1152 | Analyze User Website Visit Pattern $ | 43.20% | Medium |
| 1151 | Minimum Swaps to Group All 1's Together $ | 51.90% | Medium |
| 1150 | Check If a Number Is Majority Element in a Sorted Array $ | 57.10% | Easy |
| 1149 | Article Views II * $ | 48.20% | Medium |
| 1148 | Article Views I * $ | 77.10% | Easy |
| 1147 | Longest Chunked Palindrome Decomposition | 59.80% | Hard |
| 1146 | Snapshot Array | 37.00% | Medium |
| 1145 | Binary Tree Coloring Game | 51.10% | Medium |
| 1144 | Decrease Elements To Make Array Zigzag | 46.50% | Medium |
| 1143 | Longest Common Subsequence | 58.80% | Medium |
| 1142 | User Activity for the Past 30 Days II * $ | 35.50% | Easy |
| 1141 | User Activity for the Past 30 Days I * $ | 54.60% | Easy |
| 1140 | Stone Game II | 64.60% | Medium |
| 1139 | Largest 1-Bordered Square | 48.70% | Medium |
| 1138 | Alphabet Board Path | 51.60% | Medium |
| 1137 | N-th Tribonacci Number | 55.70% | Easy |
| 1136 | Parallel Courses $ | 60.70% | Medium |
| 1135 | Connecting Cities With Minimum Cost $ | 60.00% | Easy |
| 1134 | Armstrong Number $ | 78.50% | Easy |
| 1133 | Largest Unique Number $ | 67.20% | Easy |
| 1132 | Reported Posts II * $ | 34.40% | Medium |
| 1131 | Maximum of Absolute Value Expression | 51.30% | Medium |
| 1130 | Minimum Cost Tree From Leaf Values | 67.40% | Medium |
| 1129 | Shortest Path with Alternating Colors | 40.70% | Medium |
| 1128 | Number of Equivalent Domino Pairs | 45.90% | Easy |
| 1127 | User Purchase Platform * $ | 50.80% | Hard |
| 1126 | Active Businesses * $ | 68.40% | Medium |
| 1125 | Smallest Sufficient Team | 47.20% | Hard |
| 1124 | Longest Well-Performing Interval | 33.50% | Medium |
| 1123 | Lowest Common Ancestor of Deepest Leaves | 68.50% | Medium |
| 1122 | Relative Sort Array | 67.90% | Easy |
| 1121 | Divide Array Into Increasing Sequences $ | 59.00% | Hard |
| 1120 | Maximum Average Subtree $ | 64.50% | Medium |
| 1119 | Remove Vowels from a String $ | 90.50% | Easy |
| 1118 | Number of Days in a Month $ | 57.30% | Easy |
| 1117 | Building H2O ~ | 53.10% | Medium |
| 1116 | Print Zero Even Odd ~ | 58.20% | Medium |
| 1115 | Print FooBar Alternately ~ | 59.00% | Medium |
| 1114 | Print in Order ~ | 67.60% | Easy |
| 1113 | Reported Posts * $ | 66.40% | Medium |
| 1112 | Highest Grade For Each Student * $ | 72.80% | Medium |
| 1111 | Maximum Nesting Depth of Two Valid Parentheses Strings | 72.70% | Medium |
| 1110 | Delete Nodes And Return Forest | 68.00% | Medium |
| 1109 | Corporate Flight Bookings | 54.30% | Medium |
| 1108 | Defanging an IP Address | 88.40% | Easy |
| 1107 | New Users Daily Count * $ | 46.10% | Medium |
| 1106 | Parsing A Boolean Expression | 59.50% | Hard |
| 1105 | Filling Bookcase Shelves | 57.50% | Medium |
| 1104 | Path In Zigzag Labelled Binary Tree | 73.50% | Medium |
| 1103 | Distribute Candies to People | 63.40% | Easy |
| 1102 | Path With Maximum Minimum Value $ | 51.00% | Medium |
| 1101 | The Earliest Moment When Everyone Become Friends $ | 67.80% | Medium |
| 1100 | Find K-Length Substrings With No Repeated Characters $ | 73.10% | Medium |
| 1099 | Two Sum Less Than K $ | 60.80% | Easy |
| 1098 | Unpopular Books * $ | 45.50% | Medium |
| 1097 | Game Play Analysis V * $ | 57.00% | Hard |
| 1096 | Brace Expansion II | 62.90% | Hard |
| 1095 | Find in Mountain Array | 36.10% | Hard |
| 1094 | Car Pooling | 59.70% | Medium |
| 1093 | Statistics from a Large Sample | 48.50% | Medium |
| 1092 | Shortest Common Supersequence | 53.40% | Hard |
| 1091 | Shortest Path in Binary Matrix | 40.30% | Medium |
| 1090 | Largest Values From Labels | 60.10% | Medium |
| 1089 | Duplicate Zeros | 51.60% | Easy |
| 1088 | Confusing Number II | 45.60% | Hard |
| 1087 | Brace Expansion $ | 63.20% | Medium |
| 1086 | High Five $ | 77.50% | Easy |
| 1085 | Sum of Digits in the Minimum Number $ | 75.10% | Easy |
| 1084 | Sales Analysis III * $ | 54.80% | Easy |
| 1083 | Sales Analysis II * $ | 50.80% | Easy |
| 1082 | Sales Analysis I * $ | 73.90% | Easy |
| 1081 | Smallest Subsequence of Distinct Characters | 53.60% | Medium |
| 1080 | Insufficient Nodes in Root to Leaf Paths | 50.10% | Medium |
| 1079 | Letter Tile Possibilities | 75.90% | Medium |
| 1078 | Occurrences After Bigram | 65.00% | Easy |
| 1077 | Project Employees III * $ | 78.00% | Medium |
| 1076 | Project Employees II * $ | 52.80% | Easy |
| 1075 | Project Employees I * $ | 66.20% | Easy |
| 1074 | Number of Submatrices That Sum to Target | 62.00% | Hard |
| 1073 | Adding Two Negabinary Numbers | 34.80% | Medium |
| 1072 | Flip Columns For Maximum Number of Equal Rows | 61.60% | Medium |
| 1071 | Greatest Common Divisor of Strings | 51.50% | Easy |
| 1070 | Product Sales Analysis III * $ | 49.90% | Medium |
| 1069 | Product Sales Analysis II * $ | 83.30% | Easy |
| 1068 | Product Sales Analysis I * $ | 82.10% | Easy |
| 1067 | Digit Count in Range $ | 41.60% | Hard |
| 1066 | Campus Bikes II $ | 54.20% | Medium |
| 1065 | Index Pairs of a String $ | 61.00% | Easy |
| 1064 | Fixed Point $ | 64.90% | Easy |
| 1063 | Number of Valid Subarrays $ | 72.10% | Hard |
| 1062 | Longest Repeating Substring $ | 58.40% | Medium |
| 1061 | Lexicographically Smallest Equivalent String $ | 66.90% | Medium |
| 1060 | Missing Element in Sorted Array $ | 54.80% | Medium |
| 1059 | All Paths from Source Lead to Destination $ | 43.00% | Medium |
| 1058 | Minimize Rounding Error to Meet Target $ | 43.70% | Medium |
| 1057 | Campus Bikes $ | 57.80% | Medium |
| 1056 | Confusing Number $ | 47.00% | Easy |
| 1055 | Shortest Way to Form String $ | 57.20% | Medium |
| 1054 | Distant Barcodes | 44.20% | Medium |
| 1053 | Previous Permutation With One Swap | 51.20% | Medium |
| 1052 | Grumpy Bookstore Owner | 55.90% | Medium |
| 1051 | Height Checker | 72.10% | Easy |
| 1050 | Actors and Directors Who Cooperated At Least Three Times * $ | 72.40% | Easy |
| 1049 | Last Stone Weight II | 45.40% | Medium |
| 1048 | Longest String Chain | 55.50% | Medium |
| 1047 | Remove All Adjacent Duplicates In String | 70.90% | Easy |
| 1046 | Last Stone Weight | 62.40% | Easy |
| 1045 | Customers Who Bought All Products * $ | 68.40% | Medium |
| 1044 | Longest Duplicate Substring | 31.40% | Hard |
| 1043 | Partition Array for Maximum Sum | 67.10% | Medium |
| 1042 | Flower Planting With No Adjacent | 48.80% | Medium |
| 1041 | Robot Bounded In Circle | 55.00% | Medium |
| 1040 | Moving Stones Until Consecutive II | 54.10% | Medium |
| 1039 | Minimum Score Triangulation of Polygon | 50.10% | Medium |
| 1038 | Binary Search Tree to Greater Sum Tree | 82.30% | Medium |
| 1037 | Valid Boomerang | 37.80% | Easy |
| 1036 | Escape a Large Maze | 34.50% | Hard |
| 1035 | Uncrossed Lines | 56.10% | Medium |
| 1034 | Coloring A Border | 45.70% | Medium |
| 1033 | Moving Stones Until Consecutive | 43.20% | Easy |
| 1032 | Stream of Characters | 48.60% | Hard |
| 1031 | Maximum Sum of Two Non-Overlapping Subarrays | 58.90% | Medium |
| 1030 | Matrix Cells in Distance Order | 66.90% | Easy |
| 1029 | Two City Scheduling | 57.90% | Medium |
| 1028 | Recover a Tree From Preorder Traversal | 70.90% | Hard |
| 1027 | Longest Arithmetic Subsequence | 49.80% | Medium |
| 1026 | Maximum Difference Between Node and Ancestor | 69.40% | Medium |
| 1025 | Divisor Game | 66.20% | Easy |
| 1024 | Video Stitching | 49.00% | Medium |
| 1023 | Camelcase Matching | 57.40% | Medium |
| 1022 | Sum of Root To Leaf Binary Numbers | 71.50% | Easy |
| 1021 | Remove Outermost Parentheses | 79.00% | Easy |
| 1020 | Number of Enclaves | 58.90% | Medium |
| 1019 | Next Greater Node In Linked List | 58.20% | Medium |
| 1018 | Binary Prefix Divisible By 5 | 47.80% | Easy |
| 1017 | Convert to Base -2 | 59.60% | Medium |
| 1016 | Binary String With Substrings Representing 1 To N | 58.90% | Medium |
| 1015 | Smallest Integer Divisible by K | 41.80% | Medium |
| 1014 | Best Sightseeing Pair | 52.90% | Medium |
| 1013 | Partition Array Into Three Parts With Equal Sum | 49.10% | Easy |
| 1012 | Numbers With Repeated Digits | 37.80% | Hard |
| 1011 | Capacity To Ship Packages Within D Days | 59.70% | Medium |
| 1010 | Pairs of Songs With Total Durations Divisible by 60 | 50.10% | Medium |
| 1009 | Complement of Base 10 Integer | 61.50% | Easy |
| 1008 | Construct Binary Search Tree from Preorder Traversal | 78.80% | Medium |
| 1007 | Minimum Domino Rotations For Equal Row | 50.90% | Medium |
| 1006 | Clumsy Factorial | 53.70% | Medium |
| 1005 | Maximize Sum Of Array After K Negations | 52.40% | Easy |
| 1004 | Max Consecutive Ones III | 60.50% | Medium |
| 1003 | Check If Word Is Valid After Substitutions | 56.10% | Medium |
| 1002 | Find Common Characters | 68.10% | Easy |
| 1001 | Grid Illumination | 36.60% | Hard |
| 1000 | Minimum Cost to Merge Stones | 40.40% | Hard |
| 999 | Available Captures for Rook | 66.80% | Easy |
| 998 | Maximum Binary Tree II | 63.70% | Medium |
| 997 | Find the Town Judge | 49.80% | Easy |
| 996 | Number of Squareful Arrays | 48.00% | Hard |
| 995 | Minimum Number of K Consecutive Bit Flips | 49.60% | Hard |
| 994 | Rotting Oranges | 49.60% | Medium |
| 993 | Cousins in Binary Tree | 52.20% | Easy |
| 992 | Subarrays with K Different Integers | 50.40% | Hard |
| 991 | Broken Calculator | 46.40% | Medium |
| 990 | Satisfiability of Equality Equations | 46.50% | Medium |
| 989 | Add to Array-Form of Integer | 44.70% | Easy |
| 988 | Smallest String Starting From Leaf | 46.60% | Medium |
| 987 | Vertical Order Traversal of a Binary Tree | 37.60% | Medium |
| 986 | Interval List Intersections | 68.10% | Medium |
| 985 | Sum of Even Numbers After Queries | 60.70% | Easy |
| 984 | String Without AAA or BBB | 38.50% | Medium |
| 983 | Minimum Cost For Tickets | 62.60% | Medium |
| 982 | Triples with Bitwise AND Equal To Zero | 56.10% | Hard |
| 981 | Time Based Key-Value Store | 54.00% | Medium |
| 980 | Unique Paths III | 77.10% | Hard |
| 979 | Distribute Coins in Binary Tree | 69.30% | Medium |
| 978 | Longest Turbulent Subarray | 46.60% | Medium |
| 977 | Squares of a Sorted Array | 72.40% | Easy |
| 976 | Largest Perimeter Triangle | 58.50% | Easy |
| 975 | Odd Even Jump | 41.70% | Hard |
| 974 | Subarray Sums Divisible by K | 50.30% | Medium |
| 973 | K Closest Points to Origin | 64.40% | Medium |
| 972 | Equal Rational Numbers | 41.80% | Hard |
| 971 | Flip Binary Tree To Match Preorder Traversal | 46.10% | Medium |
| 970 | Powerful Integers | 39.90% | Easy |
| 969 | Pancake Sorting | 68.40% | Medium |
| 968 | Binary Tree Cameras | 38.40% | Hard |
| 967 | Numbers With Same Consecutive Differences | 44.30% | Medium |
| 966 | Vowel Spellchecker | 47.70% | Medium |
| 965 | Univalued Binary Tree | 67.60% | Easy |
| 964 | Least Operators to Express Number | 44.70% | Hard |
| 963 | Minimum Area Rectangle II | 51.60% | Medium |
| 962 | Maximum Width Ramp | 46.00% | Medium |
| 961 | N-Repeated Element in Size 2N Array | 74.20% | Easy |
| 960 | Delete Columns to Make Sorted III | 54.00% | Hard |
| 959 | Regions Cut By Slashes | 66.70% | Medium |
| 958 | Check Completeness of a Binary Tree | 52.30% | Medium |
| 957 | Prison Cells After N Days | 40.30% | Medium |
| 956 | Tallest Billboard | 39.70% | Hard |
| 955 | Delete Columns to Make Sorted II | 33.40% | Medium |
| 954 | Array of Doubled Pairs | 35.30% | Medium |
| 953 | Verifying an Alien Dictionary | 52.90% | Easy |
| 952 | Largest Component Size by Common Factor | 36.00% | Hard |
| 951 | Flip Equivalent Binary Trees | 65.50% | Medium |
| 950 | Reveal Cards In Increasing Order | 75.00% | Medium |
| 949 | Largest Time for Given Digits | 36.30% | Medium |
| 948 | Bag of Tokens | 46.20% | Medium |
| 947 | Most Stones Removed with Same Row or Column | 55.30% | Medium |
| 946 | Validate Stack Sequences | 63.10% | Medium |
| 945 | Minimum Increment to Make Array Unique | 46.50% | Medium |
| 944 | Delete Columns to Make Sorted | 70.90% | Easy |
| 943 | Find the Shortest Superstring | 43.20% | Hard |
| 942 | DI String Match | 73.20% | Easy |
| 941 | Valid Mountain Array | 32.20% | Easy |
| 940 | Distinct Subsequences II | 41.50% | Hard |
| 939 | Minimum Area Rectangle | 52.00% | Medium |
| 938 | Range Sum of BST | 79.90% | Easy |
| 937 | Reorder Data in Log Files | 53.70% | Easy |
| 936 | Stamping The Sequence | 38.10% | Hard |
| 935 | Knight Dialer | 43.80% | Medium |
| 934 | Shortest Bridge | 46.50% | Medium |
| 933 | Number of Recent Calls | 70.90% | Easy |
| 932 | Beautiful Array | 57.10% | Medium |
| 931 | Minimum Falling Path Sum | 61.30% | Medium |
| 930 | Binary Subarrays With Sum | 41.40% | Medium |
| 929 | Unique Email Addresses | 67.60% | Easy |
| 928 | Minimize Malware Spread II | 40.10% | Hard |
| 927 | Three Equal Parts | 32.80% | Hard |
| 926 | Flip String to Monotone Increasing | 51.60% | Medium |
| 925 | Long Pressed Name | 45.00% | Easy |
| 924 | Minimize Malware Spread | 41.70% | Hard |
| 923 | 3Sum With Multiplicity | 35.30% | Medium |
| 922 | Sort Array By Parity II | 68.30% | Easy |
| 921 | Minimum Add to Make Parentheses Valid | 72.30% | Medium |
| 920 | Number of Music Playlists | 45.70% | Hard |
| 919 | Complete Binary Tree Inserter | 55.70% | Medium |
| 918 | Maximum Sum Circular Subarray | 33.20% | Medium |
| 917 | Reverse Only Letters | 56.30% | Easy |
| 916 | Word Subsets | 45.90% | Medium |
| 915 | Partition Array into Disjoint Intervals | 43.90% | Medium |
| 914 | X of a Kind in a Deck of Cards | 34.00% | Easy |
| 913 | Cat and Mouse | 29.90% | Hard |
| 912 | Sort an Array | 62.90% | Medium |
| 911 | Online Election | 48.30% | Medium |
| 910 | Smallest Range II | 24.90% | Medium |
| 909 | Snakes and Ladders | 36.10% | Easy |
| 908 | Smallest Range I | 65.00% | Easy |
| 907 | Sum of Subarray Minimums | 29.40% | Medium |
| 906 | Super Palindromes | 30.80% | Hard |
| 905 | Sort Array By Parity | 72.60% | Easy |
| 904 | Fruit Into Baskets | 41.70% | Medium |
| 903 | Valid Permutations for DI Sequence | 45.10% | Hard |
| 902 | Numbers At Most N Given Digit Set | 28.80% | Hard |
| 901 | Online Stock Span | 49.90% | Medium |
| 900 | RLE Iterator | 50.50% | Medium |
| 899 | Orderly Queue | 47.70% | Hard |
| 898 | Bitwise ORs of Subarrays | 34.70% | Medium |
| 897 | Increasing Order Search Tree | 65.20% | Easy |
| 896 | Monotonic Array | 55.40% | Easy |
| 895 | Maximum Frequency Stack | 56.70% | Hard |
| 894 | All Possible Full Binary Trees | 71.30% | Medium |
| 893 | Groups of Special-Equivalent Strings | 63.00% | Easy |
| 892 | Surface Area of 3D Shapes | 56.10% | Easy |
| 891 | Sum of Subsequence Widths | 29.20% | Hard |
| 890 | Find and Replace Pattern | 71.30% | Medium |
| 889 | Construct Binary Tree from Preorder and Postorder Traversal | 60.70% | Medium |
| 888 | Fair Candy Swap | 56.90% | Easy |
| 887 | Super Egg Drop | 24.90% | Hard |
| 886 | Possible Bipartition | 40.90% | Medium |
| 885 | Spiral Matrix III | 64.80% | Medium |
| 884 | Uncommon Words from Two Sentences | 60.90% | Easy |
| 883 | Projection Area of 3D Shapes | 65.90% | Easy |
| 882 | Reachable Nodes In Subdivided Graph | 38.20% | Hard |
| 881 | Boats to Save People | 44.10% | Medium |
| 880 | Decoded String at Index | 23.00% | Medium |
| 879 | Profitable Schemes | 36.20% | Hard |
| 878 | Nth Magical Number | 25.40% | Hard |
| 877 | Stone Game | 61.10% | Medium |
| 876 | Middle of the Linked List | 63.80% | Easy |
| 875 | Koko Eating Bananas | 45.90% | Medium |
| 874 | Walking Robot Simulation | 31.70% | Easy |
| 873 | Length of Longest Fibonacci Subsequence | 46.00% | Medium |
| 872 | Leaf-Similar Trees | 63.10% | Easy |
| 871 | Minimum Number of Refueling Stops | 28.70% | Hard |
| 870 | Advantage Shuffle | 42.20% | Medium |
| 869 | Reordered Power of 2 | 50.60% | Medium |
| 868 | Binary Gap | 59.30% | Easy |
| 867 | Transpose Matrix | 63.90% | Easy |
| 866 | Prime Palindrome | 20.00% | Medium |
| 865 | Smallest Subtree with all the Deepest Nodes | 55.40% | Medium |
| 864 | Shortest Path to Get All Keys | 35.70% | Hard |
| 863 | All Nodes Distance K in Binary Tree | 46.80% | Medium |
| 862 | Shortest Subarray with Sum at Least K | 22.00% | Hard |
| 861 | Score After Flipping Matrix | 69.30% | Medium |
| 860 | Lemonade Change | 50.20% | Easy |
| 859 | Buddy Strings | 27.60% | Easy |
| 858 | Mirror Reflection | 52.00% | Medium |
| 857 | Minimum Cost to Hire K Workers | 47.30% | Hard |
| 856 | Score of Parentheses | 55.90% | Medium |
| 855 | Exam Room | 38.10% | Medium |
| 854 | K-Similar Strings | 33.20% | Hard |
| 853 | Car Fleet | 39.30% | Medium |
| 852 | Peak Index in a Mountain Array | 68.50% | Easy |
| 851 | Loud and Rich | 47.40% | Medium |
| 850 | Rectangle Area II | 44.00% | Hard |
| 849 | Maximize Distance to Closest Person | 40.40% | Easy |
| 848 | Shifting Letters | 39.90% | Medium |
| 847 | Shortest Path Visiting All Nodes | 45.90% | Hard |
| 846 | Hand of Straights | 48.60% | Medium |
| 845 | Longest Mountain in Array | 34.00% | Medium |
| 844 | Backspace String Compare | 45.50% | Easy |
| 843 | Guess the Word | 42.60% | Hard |
| 842 | Split Array into Fibonacci Sequence | 34.60% | Medium |
| 841 | Keys and Rooms | 59.70% | Medium |
| 840 | Magic Squares In Grid | 35.10% | Easy |
| 839 | Similar String Groups | 33.50% | Hard |
| 838 | Push Dominoes | 42.80% | Medium |
| 837 | New 21 Game | 29.50% | Medium |
| 836 | Rectangle Overlap | 45.50% | Easy |
| 835 | Image Overlap | 50.30% | Medium |
| 834 | Sum of Distances in Tree | 38.10% | Hard |
| 833 | Find And Replace in String | 44.50% | Medium |
| 832 | Flipping an Image | 71.30% | Easy |
| 831 | Masking Personal Information | 41.50% | Medium |
| 830 | Positions of Large Groups | 47.40% | Easy |
| 829 | Consecutive Numbers Sum | 32.10% | Hard |
| 828 | Unique Letter String | 38.10% | Hard |
| 827 | Making A Large Island | 42.10% | Hard |
| 826 | Most Profit Assigning Work | 34.70% | Medium |
| 825 | Friends Of Appropriate Ages | 35.00% | Medium |
| 824 | Goat Latin | 56.70% | Easy |
| 823 | Binary Trees With Factors | 31.50% | Medium |
| 822 | Card Flipping Game | 39.70% | Medium |
| 821 | Shortest Distance to a Character | 62.60% | Easy |
| 820 | Short Encoding of Words | 46.00% | Medium |
| 819 | Most Common Word | 41.50% | Easy |
| 818 | Race Car | 34.00% | Hard |
| 817 | Linked List Components | 51.90% | Medium |
| 816 | Ambiguous Coordinates | 42.40% | Medium |
| 815 | Bus Routes | 36.10% | Hard |
| 814 | Binary Tree Pruning | 68.30% | Medium |
| 813 | Largest Sum of Averages | 42.40% | Medium |
| 812 | Largest Triangle Area | 53.80% | Easy |
| 811 | Subdomain Visit Count | 61.50% | Easy |
| 810 | Chalkboard XOR Game | 41.90% | Hard |
| 809 | Expressive Words | 39.50% | Medium |
| 808 | Soup Servings | 33.60% | Medium |
| 807 | Max Increase to Keep City Skyline | 79.60% | Medium |
| 806 | Number of Lines To Write String | 62.10% | Easy |
| 805 | Split Array With Same Average | 21.00% | Hard |
| 804 | Unique Morse Code Words | 71.30% | Easy |
| 803 | Bricks Falling When Hit | 22.90% | Hard |
| 802 | Find Eventual Safe States | 39.20% | Medium |
| 801 | Minimum Swaps To Make Sequences Increasing | 31.00% | Medium |
| 800 | Similar RGB Color $ | 54.50% | Easy |
| 799 | Champagne Tower | 29.90% | Medium |
| 798 | Smallest Rotation with Highest Score | 34.30% | Hard |
| 797 | All Paths From Source to Target | 67.40% | Medium |
| 796 | Rotate String | 49.60% | Easy |
| 795 | Number of Subarrays with Bounded Maximum | 41.60% | Medium |
| 794 | Valid Tic-Tac-Toe State | 27.80% | Medium |
| 793 | Preimage Size of Factorial Zeroes Function | 40.80% | Hard |
| 792 | Number of Matching Subsequences | 37.30% | Medium |
| 791 | Custom Sort String | 59.40% | Medium |
| 790 | Domino and Tromino Tiling | 32.80% | Medium |
| 789 | Escape The Ghosts | 51.00% | Medium |
| 788 | Rotated Digits | 51.00% | Easy |
| 787 | Cheapest Flights Within K Stops | 29.90% | Medium |
| 786 | K-th Smallest Prime Fraction | 32.50% | Hard |
| 785 | Is Graph Bipartite | 38.50% | Medium |
| 784 | Letter Case Permutation | 53.00% | Easy |
| 783 | Minimum Distance Between BST Nodes | 47.80% | Easy |
| 782 | Transform to Chessboard | 37.50% | Hard |
| 781 | Rabbits in Forest | 49.80% | Medium |
| 780 | Reaching Points | 23.90% | Hard |
| 779 | K-th Symbol in Grammar | 37.30% | Medium |
| 778 | Swim in Rising Water | 44.60% | Hard |
| 777 | Swap Adjacent in LR String | 28.90% | Medium |
| 776 | Split BST $ | 49.90% | Medium |
| 775 | Global and Local Inversions | 33.60% | Medium |
| 774 | Minimize Max Distance to Gas Station $ | 32.80% | Hard |
| 773 | Sliding Puzzle | 46.50% | Hard |
| 772 | Basic Calculator III $ | 40.10% | Hard |
| 771 | Jewels and Stones | 81.90% | Easy |
| 770 | Basic Calculator IV | 42.10% | Hard |
| 769 | Max Chunks To Make Sorted | 48.00% | Medium |
| 768 | Max Chunks To Make Sorted II | 43.20% | Hard |
| 767 | Reorganize String | 36.50% | Medium |
| 766 | Toeplitz Matrix | 57.90% | Easy |
| 765 | Couples Holding Hands | 48.50% | Hard |
| 764 | Largest Plus Sign | 39.20% | Medium |
| 763 | Partition Labels | 64.10% | Medium |
| 762 | Prime Number of Set Bits in Binary Representation | 55.00% | Easy |
| 761 | Special Binary String | 41.00% | Hard |
| 760 | Find Anagram Mappings $ | 75.60% | Easy |
| 759 | Employee Free Time $ | 51.90% | Hard |
| 758 | Bold Words in String $ | 37.90% | Easy |
| 757 | Set Intersection Size At Least Two | 34.60% | Hard |
| 756 | Pyramid Transition Matrix | 45.50% | Medium |
| 755 | Pour Water $ | 34.00% | Medium |
| 754 | Reach a Number | 26.10% | Medium |
| 753 | Cracking the Safe | 39.70% | Hard |
| 752 | Open the Lock | 38.20% | Medium |
| 751 | IP to CIDR $ | 54.80% | Easy |
| 750 | Number Of Corner Rectangles $ | 51.00% | Medium |
| 749 | Contain Virus | 39.60% | Hard |
| 748 | Shortest Completing Word | 53.50% | Medium |
| 747 | Largest Number At Least Twice of Others | 42.60% | Easy |
| 746 | Min Cost Climbing Stairs | 43.60% | Easy |
| 745 | Prefix and Suffix Search | 24.50% | Hard |
| 744 | Find Smallest Letter Greater Than Target | 45.30% | Easy |
| 743 | Network Delay Time | 34.30% | Medium |
| 742 | Closest Leaf in a Binary Tree $ | 33.20% | Medium |
| 741 | Cherry Pickup | 22.50% | Hard |
| 740 | Delete and Earn | 42.60% | Medium |
| 739 | Daily Temperatures | 53.50% | Medium |
| 738 | Monotone Increasing Digits | 41.80% | Medium |
| 737 | Sentence Similarity II $ | 41.20% | Medium |
| 736 | Parse Lisp Expression | 42.00% | Hard |
| 735 | Asteroid Collision | 37.60% | Medium |
| 734 | Sentence Similarity $ | 38.60% | Easy |
| 733 | Flood Fill | 49.30% | Easy |
| 732 | My Calendar III | 51.30% | Hard |
| 731 | My Calendar II | 35.00% | Medium |
| 730 | Count Different Palindromic Subsequences | 32.40% | Hard |
| 729 | My Calendar I | 40.10% | Medium |
| 728 | Self Dividing Numbers | 68.50% | Easy |
| 727 | Minimum Window Subsequence | 30.10% | Hard |
| 726 | Number of Atoms | 45.00% | Hard |
| 725 | Split Linked List in Parts | 50.00% | Medium |
| 724 | Find Pivot Index | 41.00% | Easy |
| 723 | Candy Crush $ | 56.10% | Medium |
| 722 | Remove Comments | 26.30% | Medium |
| 721 | Accounts Merge | 29.60% | Medium |
| 720 | Longest Word in Dictionary | 40.60% | Easy |
| 719 | Find K-th Smallest Pair Distance | 26.10% | Hard |
| 718 | Maximum Length of Repeated Subarray | 39.90% | Medium |
| 717 | 1-bit and 2-bit Characters | 50.90% | Easy |
| 716 | Max Stack $ | 35.50% | Hard |
| 715 | Range Module | 31.00% | Hard |
| 714 | Best Time to Buy and Sell Stock with Transaction Fee | 41.60% | Medium |
| 713 | Subarray Product Less Than K | 32.90% | Medium |
| 712 | Minimum ASCII Delete Sum for Two Strings | 50.90% | Medium |
| 711 | Number of Distinct Islands II $ | 39.40% | Hard |
| 710 | Random Pick with Blacklist | 29.80% | Hard |
| 709 | To Lower Case | 74.50% | Easy |
| 708 | Insert into a Cyclic Sorted List $ | 25.50% | Medium |
| 707 | Design Linked List | 19.10% | Easy |
| 706 | Design HashMap | 49.10% | Easy |
| 705 | Design HashSet | 43.60% | Easy |
| 704 | Binary Search | 40.10% | Easy |
| 703 | Kth Largest Element in a Stream | 39.60% | Easy |
| 702 | Search in a Sorted Array of Unknown Size | 43.00% | Medium |
| 701 | Insert into a Binary Search Tree | 67.90% | Medium |
| 700 | Search in a Binary Search Tree | 62.70% | Easy |
| 699 | Falling Squares | 36.80% | Hard |
| 698 | Partition to K Equal Sum Subsets | 35.60% | Medium |
| 697 | Degree of an Array | 47.90% | Easy |
| 696 | Count Binary Substrings | 51.90% | Easy |
| 695 | Max Area of Island | 53.30% | Easy |
| 694 | Number of Distinct Islands $ | 43.90% | Medium |
| 693 | Binary Number with Alternating Bits | 54.20% | Easy |
| 692 | Top K Frequent Words | 41.70% | Medium |
| 691 | Stickers to Spell Word | 32.30% | Hard |
| 690 | Employee Importance | 53.60% | Easy |
| 689 | Maximum Sum of 3 Non-Overlapping Subarrays | 41.70% | Hard |
| 688 | Knight Probability in Chessboard | 38.90% | Medium |
| 687 | Longest Univalue Path | 32.90% | Easy |
| 686 | Repeated String Match | 31.70% | Easy |
| 685 | Redundant Connection II | 28.40% | Hard |
| 684 | Redundant Connection | 37.40% | Medium |
| 683 | K Empty Slots | 37.00% | Hard |
| 682 | Baseball Game | 58.60% | Easy |
| 681 | Next Closest Time $ | 43.00% | Medium |
| 680 | Valid Palindrome II | 31.10% | Easy |
| 679 | 24 Game | 38.30% | Hard |
| 678 | Valid Parenthesis String | 28.30% | Medium |
| 677 | Map Sum Pairs | 53.80% | Medium |
| 676 | Implement Magic Dictionary | 50.70% | Medium |
| 675 | Cut Off Trees for Golf Event | 27.20% | Hard |
| 674 | Longest Continuous Increasing Subsequence | 43.20% | Easy |
| 673 | Number of Longest Increasing Subsequence | 30.80% | Medium |
| 672 | Bulb Switcher II | 47.60% | Medium |
| 671 | Second Minimum Node In a Binary Tree | 42.30% | Easy |
| 670 | Maximum Swap | 38.40% | Medium |
| 669 | Trim a Binary Search Tree | 58.70% | Easy |
| 668 | Kth Smallest Number in Multiplication Table | 36.30% | Hard |
| 667 | Beautiful Arrangement II | 51.50% | Medium |
| 666 | Path Sum IV $ | 48.90% | Medium |
| 665 | Non-decreasing Array | 21.20% | Easy |
| 664 | Strange Printer | 31.10% | Hard |
| 663 | Equal Tree Partition $ | 36.70% | Medium |
| 662 | Maximum Width of Binary Tree | 37.00% | Medium |
| 661 | Image Smoother | 46.60% | Easy |
| 660 | Remove 9 $ | 46.10% | Hard |
| 659 | Split Array into Consecutive Subsequences | 39.40% | Medium |
| 658 | Find K Closest Elements | 36.30% | Medium |
| 657 | Judge Route Circle | 69.30% | Easy |
| 656 | Coin Path $ | 24.60% | Hard |
| 655 | Print Binary Tree | 50.80% | Medium |
| 654 | Maximum Binary Tree | 70.80% | Medium |
| 653 | Two Sum IV - Input is a BST | 50.60% | Easy |
| 652 | Find Duplicate Subtrees | 33.20% | Medium |
| 651 | 4 Keys Keyboard $ | 46.70% | Medium |
| 650 | 2 Keys Keyboard | 42.70% | Medium |
| 649 | Dota2 Senate | 35.60% | Medium |
| 648 | Replace Words | 48.40% | Medium |
| 647 | Palindromic Substrings | 55.70% | Medium |
| 646 | Maximum Length of Pair Chain | 47.40% | Medium |
| 645 | Set Mismatch | 40.40% | Easy |
| 644 | Maximum Average Subarray II $ | 20.30% | Hard |
| 643 | Maximum Average Subarray I | 38.40% | Easy |
| 642 | Design Search Autocomplete System $ | 29.40% | Hard |
| 641 | Design Circular Deque | 48.00% | Medium |
| 640 | Solve the Equation | 39.00% | Medium |
| 639 | Decode Ways II | 22.80% | Hard |
| 638 | Shopping Offers | 41.50% | Medium |
| 637 | Average of Levels in Binary Tree | 55.60% | Easy |
| 636 | Exclusive Time of Functions | 40.30% | Medium |
| 635 | Design Log Storage System $ | 47.70% | Medium |
| 634 | Find the Derangement of An Array $ | 32.70% | Medium |
| 633 | Sum of Square Numbers | 31.60% | Easy |
| 632 | Smallest Range | 42.80% | Hard |
| 631 | Design Excel Sum Formula $ | 25.60% | Hard |
| 630 | Course Schedule III | 20.50% | Medium |
| 629 | K Inverse Pairs Array | 23.90% | Hard |
| 628 | Maximum Product of Three Numbers | 45.40% | Easy |
| 627 | Swap Salary | 67.40% | Easy |
| 626 | Exchange Seats | 49.60% | Medium |
| 625 | Minimum Factorization | 29.50% | Medium |
| 624 | Maximum Distance in Arrays $ | 32.70% | Easy |
| 623 | Add One Row to Tree | 48.70% | Medium |
| 622 | Design Circular Queue | 36.60% | Medium |
| 621 | Task Scheduler | 41.40% | Medium |
| 620 | Not Boring Movies | 59.80% | Easy |
| 619 | Biggest Single Number $ | 36.60% | Easy |
| 618 | Students Report By Geography $ | 40.40% | Hard |
| 617 | Merge Two Binary Trees | 69.60% | Easy |
| 616 | Add Bold Tag in String $ | 37.30% | Medium |
| 615 | Average Salary: Departments VS Company $ | 33.00% | Hard |
| 614 | Second Degree Follower $ | 22.70% | Medium |
| 613 | Shortest Distance in a Line $ | 70.60% | Easy |
| 612 | Shortest Distance in a Plane $ | 51.00% | Medium |
| 611 | Valid Triangle Number | 38.90% | Medium |
| 610 | Triangle Judgement $ | 59.10% | Easy |
| 609 | Find Duplicate File in System | 52.50% | Medium |
| 608 | Tree Node $ | 54.60% | Medium |
| 607 | Sales Person $ | 51.10% | Easy |
| 606 | Construct String from Binary Tree | 51.80% | Easy |
| 605 | Can Place Flowers | 30.00% | Easy |
| 604 | Design Compressed String Iterator $ | 31.60% | Easy |
| 603 | Consecutive Available Seats $ | 54.50% | Easy |
| 602 | Friend Requests II: Who Has the Most Friends $ | 42.50% | Medium |
| 601 | Human Traffic of Stadium | 33.80% | Hard |
| 600 | Non-negative Integers without Consecutive Ones | 27.40% | Hard |
| 599 | Minimum Index Sum of Two Lists | 48.00% | Easy |
| 598 | Range Addition II | 48.30% | Easy |
| 597 | Friend Requests I: Overall Acceptance Rate $ | 38.40% | Easy |
| 596 | Classes More Than 5 Students | 33.40% | Easy |
| 595 | Big Countries | 72.00% | Easy |
| 594 | Longest Harmonious Subsequence | 40.00% | Easy |
| 593 | Valid Square | 39.20% | Medium |
| 592 | Fraction Addition and Subtraction | 47.00% | Medium |
| 591 | Tag Validator | 26.40% | Hard |
| 590 | N-ary Tree Postorder Traversal | 63.00% | Easy |
| 589 | N-ary Tree Preorder Traversal | 63.10% | Easy |
| 588 | Design In-Memory File System $ | 32.40% | Hard |
| 587 | Erect the Fence | 29.90% | Hard |
| 586 | Customer Placing the Largest Number of Orders $ | 62.50% | Easy |
| 585 | Investments in 2016 $ | 44.60% | Medium |
| 584 | Find Customer Referee $ | 63.60% | Easy |
| 583 | Delete Operation for Two Strings | 44.00% | Medium |
| 582 | Kill Process $ | 47.70% | Medium |
| 581 | Shortest Unsorted Continuous Subarray | 30.10% | Easy |
| 580 | Count Student Number in Departments $ | 40.00% | Medium |
| 579 | Find Cumulative Salary of an Employee $ | 30.90% | Hard |
| 578 | Get Highest Answer Rate Question $ | 33.10% | Medium |
| 577 | Employee Bonus $ | 53.80% | Easy |
| 576 | Out of Boundary Paths | 33.10% | Medium |
| 575 | Distribute Candies | 59.50% | Easy |
| 574 | Winning Candidate $ | 34.50% | Medium |
| 573 | Squirrel Simulation $ | 51.00% | Medium |
| 572 | Subtree of Another Tree | 41.00% | Easy |
| 571 | Find Median Given Frequency of Numbers $ | 44.90% | Hard |
| 570 | Managers with at Least 5 Direct Reports $ | 59.00% | Medium |
| 569 | Median Employee Salary $ | 41.60% | Hard |
| 568 | Maximum Vacation Days $ | 39.90% | Hard |
| 567 | Permutation in String | 36.30% | Medium |
| 566 | Reshape the Matrix | 59.80% | Easy |
| 565 | Array Nesting | 50.00% | Medium |
| 564 | Find the Closest Palindrome | 16.60% | Hard |
| 563 | Binary Tree Tilt | 47.00% | Easy |
| 562 | Longest Line of Consecutive One in Matrix $ | 38.80% | Medium |
| 561 | Array Partition I | 69.80% | Easy |
| 560 | Subarray Sum Equals K | 41.80% | Medium |
| 559 | Maximum Depth of N-ary Tree | 62.10% | Easy |
| 558 | Quad Tree Intersection | 36.40% | Easy |
| 557 | Reverse Words in a String III | 61.20% | Easy |
| 556 | Next Greater Element III | 27.70% | Medium |
| 555 | Split Concatenated Strings $ | 30.00% | Medium |
| 554 | Brick Wall | 42.70% | Medium |
| 553 | Optimal Division | 55.20% | Medium |
| 552 | Student Attendance Record II | 28.50% | Hard |
| 551 | Student Attendance Record I | 43.90% | Easy |
| 549 | Binary Tree Longest Consecutive Sequence II $ | 38.10% | Medium |
| 548 | Split Array with Equal Sum $ | 30.80% | Medium |
| 547 | Friend Circles | 49.00% | Medium |
| 546 | Remove Boxes | 29.60% | Hard |
| 545 | Boundary of Binary Tree $ | 29.10% | Medium |
| 544 | Output Contest Matches $ | 73.20% | Medium |
| 543 | Diameter of Binary Tree | 42.70% | Easy |
| 542 | 01 Matrix | 32.50% | Medium |
| 541 | Reverse String II | 44.40% | Easy |
| 540 | Single Element in a Sorted Array | 55.90% | Medium |
| 539 | Minimum Time Difference | 44.70% | Medium |
| 538 | Convert BST to Greater Tree | 52.70% | Medium |
| 537 | Complex Number Multiplication | 65.90% | Medium |
| 536 | Construct Binary Tree from String $ | 36.30% | Medium |
| 535 | Encode and Decode TinyURL | 76.10% | Medium |
| 534 | Game Play Analysis III | 67.10% | Medium |
| 533 | Lonely Pixel II $ | 38.90% | Medium |
| 532 | K-diff Pairs in an Array | 27.20% | Easy |
| 531 | Lonely Pixel I $ | 50.20% | Medium |
| 530 | Minimum Absolute Difference in BST | 48.00% | Easy |
| 529 | Minesweeper | 52.00% | Medium |
| 528 | Random Pick with Weight | 41.80% | Medium |
| 527 | Word Abbreviation $ | 33.90% | Hard |
| 526 | Beautiful Arrangement | 53.50% | Medium |
| 525 | Contiguous Array | 34.40% | Medium |
| 524 | Longest Word in Dictionary through Deleting | 40.20% | Medium |
| 523 | Continuous Subarray Sum | 21.30% | Medium |
| 522 | Longest Uncommon Subsequence II | 28.10% | Medium |
| 521 | Longest Uncommon Subsequence I | 50.70% | Easy |
| 520 | Detect Capital | 54.20% | Easy |
| 519 | Random Flip Matrix | 32.20% | Medium |
| 518 | Coin Change 2 | 33.20% | Medium |
| 517 | Super Washing Machines | 34.60% | Hard |
| 516 | Longest Palindromic Subsequence | 42.00% | Medium |
| 515 | Find Largest Value in Each Tree Row | 52.70% | Medium |
| 514 | Freedom Trail | 27.20% | Hard |
| 513 | Find Bottom Left Tree Value | 55.60% | Medium |
| 510 | Inorder Successor in BST II $ | 56.20% | Medium |
| 509 | Fibonacci Number | 66.40% | Easy |
| 508 | Most Frequent Subtree Sum | 52.00% | Medium |
| 507 | Perfect Number | 32.70% | Easy |
| 506 | Relative Ranks | 48.50% | Easy |
| 505 | The Maze II | 34.80% | Medium |
| 504 | Base 7 | 46.40% | Easy |
| 503 | Next Greater Element II | 46.20% | Medium |
| 502 | IPO | 32.40% | Hard |
| 501 | Find Mode in Binary Search Tree | 39.40% | Easy |
| 500 | Keyboard Row | 60.20% | Easy |
| 499 | The Maze III | 32.00% | Hard |
| 498 | Diagonal Traverse | 46.20% | Medium |
| 497 | Random Point in Non-overlapping Rectangles | 33.20% | Medium |
| 496 | Next Greater Element I | 58.80% | Easy |
| 495 | Teemo Attacking | 51.90% | Medium |
| 494 | Target Sum | 44.40% | Medium |
| 493 | Reverse Pairs | 17.10% | Hard |
| 492 | Construct the Rectangle | 49.70% | Easy |
| 491 | Increasing Subsequences | 39.30% | Medium |
| 490 | The Maze | 42.80% | Medium |
| 489 | Robot Room Cleaner | 57.10% | Hard |
| 488 | Zuma Game | 38.00% | Hard |
| 487 | Max Consecutive Ones II $ | 42.70% | Medium |
| 486 | Predict the Winner | 43.60% | Medium |
| 485 | Max Consecutive Ones | 55.30% | Easy |
| 484 | Find Permutation $ | 50.50% | Medium |
| 483 | Smallest Good Base | 30.60% | Hard |
| 482 | License Key Formatting | 41.20% | Medium |
| 481 | Magical String | 46.20% | Medium |
| 480 | Sliding Window Median | 31.00% | Hard |
| 479 | Largest Palindrome Product | 23.90% | Easy |
| 478 | Generate Random Point in a Circle | 33.80% | Medium |
| 477 | Total Hamming Distance | 44.10% | Medium |
| 476 | Number Complement | 61.20% | Easy |
| 475 | Heaters | 30.20% | Easy |
| 474 | Ones and Zeroes | 34.90% | Medium |
| 473 | Matchsticks to Square | 31.80% | Medium |
| 472 | Concatenated Words | 29.20% | Hard |
| 471 | Encode String with Shortest Length $ | 43.50% | Hard |
| 470 | Implement Rand10() Using Rand7() | 43.00% | Medium |
| 469 | Convex Polygon $ | 27.20% | Medium |
| 468 | Validate IP Address | 22.10% | Medium |
| 467 | Unique Substrings in Wraparound String | 29.90% | Medium |
| 466 | Count The Repetitions | 24.20% | Hard |
| 465 | Optimal Account Balancing $ | 29.20% | Hard |
| 464 | Can I Win | 22.20% | Medium |
| 463 | Island Perimeter | 56.70% | Easy |
| 462 | Minimum Moves to Equal Array Elements II | 50.90% | Medium |
| 461 | Hamming Distance | 73.20% | Easy |
| 460 | LFU Cache | 18.30% | Hard |
| 459 | Repeated Substring Pattern | 39.70% | Easy |
| 458 | Poor Pigs | 40.70% | Easy |
| 457 | Circular Array Loop | 20.60% | Medium |
| 456 | 132 Pattern | 28.00% | Medium |
| 455 | Assign Cookies | 48.10% | Easy |
| 454 | 4Sum II | 42.80% | Medium |
| 453 | Minimum Moves to Equal Array Elements | 46.30% | Easy |
| 452 | Minimum Number of Arrows to Burst Balloons | 42.10% | Medium |
| 451 | Sort Characters By Frequency | 50.90% | Medium |
| 450 | Delete Node in a BST | 34.50% | Medium |
| 449 | Serialize and Deserialize BST | 41.20% | Medium |
| 448 | Find All Numbers Disappeared in an Array | 58.30% | Easy |
| 447 | Number of Boomerangs | 42.20% | Easy |
| 446 | Arithmetic Slices II - Subsequence | 22.30% | Hard |
| 445 | Add Two Numbers II | 45.40% | Medium |
| 444 | Sequence Reconstruction $ | 20.50% | Medium |
| 443 | String Compression | 35.80% | Easy |
| 442 | Find All Duplicates in an Array | 46.40% | Medium |
| 441 | Arranging Coins | 36.20% | Easy |
| 440 | K-th Smallest in Lexicographical Order | 21.50% | Hard |
| 439 | Ternary Expression Parser $ | 49.40% | Medium |
| 438 | Find All Anagrams in a String | 33.50% | Easy |
| 437 | Path Sum III | 38.60% | Easy |
| 436 | Find Right Interval | 42.30% | Medium |
| 435 | Non-overlapping Intervals | 39.80% | Medium |
| 434 | Number of Segments in a String | 38.40% | Easy |
| 433 | Minimum Genetic Mutation | 33.50% | Medium |
| 432 | All O`one Data Structure | 28.30% | Hard |
| 431 | Encode N-ary Tree to Binary Tree $ | 53.70% | Hard |
| 430 | Flatten a Multilevel Doubly Linked List | 36.20% | Medium |
| 429 | N-ary Tree Level Order Traversal | 55.80% | Easy |
| 428 | Serialize and Deserialize N-ary Tree $ | 48.10% | Hard |
| 427 | Construct Quad Tree | 49.20% | Easy |
| 426 | Convert Binary Search Tree to Sorted Doubly Linked List | 43.30% | Medium |
| 425 | Word Squares $ | 40.10% | Hard |
| 424 | Longest Repeating Character Replacement | 38.10% | Medium |
| 423 | Reconstruct Original Digits from English | 40.80% | Medium |
| 422 | Valid Word Square $ | 36.40% | Easy |
| 421 | Maximum XOR of Two Numbers in an Array | 36.40% | Medium |
| 420 | Strong Password Checker | 22.10% | Hard |
| 419 | Battleships in a Board | 59.30% | Medium |
| 418 | Sentence Screen Fitting $ | 25.10% | Medium |
| 417 | Pacific Atlantic Water Flow | 31.10% | Medium |
| 416 | Partition Equal Subset Sum | 36.80% | Medium |
| 415 | Add Strings | 41.50% | Easy |
| 414 | Third Maximum Number | 26.50% | Easy |
| 413 | Arithmetic Slices | 53.50% | Medium |
| 412 | Fizz Buzz | 57.50% | Easy |
| 411 | Minimum Unique Word Abbreviation $ | 25.60% | Hard |
| 410 | Split Array Largest Sum | 25.00% | Hard |
| 409 | Longest Palindrome | 44.90% | Easy |
| 408 | Valid Word Abbreviation $ | 26.20% | Easy |
| 407 | Trapping Rain Water II | 33.10% | Hard |
| 406 | Queue Reconstruction by Height | 54.10% | Medium |
| 405 | Convert a Number to Hexadecimal | 41.80% | Easy |
| 404 | Sum of Left Leaves | 46.20% | Easy |
| 403 | Frog Jump | 31.70% | Hard |
| 402 | Remove K Digits | 25.90% | Medium |
| 401 | Binary Watch | 43.00% | Easy |
| 400 | Nth Digit | 30.70% | Easy |
| 399 | Evaluate Division | 34.60% | Medium |
| 398 | Random Pick Index | 30.40% | Medium |
| 397 | Integer Replacement | 25.90% | Easy |
| 396 | Rotate Function | 28.40% | Easy |
| 395 | Longest Substring with At Least K Repeating Characters | 32.50% | Medium |
| 394 | Decode String | 38.60% | Medium |
| 393 | UTF-8 Validation | 33.00% | Medium |
| 392 | Is Subsequence | 44.10% | Medium |
| 391 | Perfect Rectangle | 13.30% | Hard |
| 390 | Elimination Game | 12.50% | Medium |
| 389 | Find the Difference | 49.90% | Easy |
| 388 | Longest Absolute File Path | 28.30% | Medium |
| 387 | First Unique Character in a String | 43.10% | Easy |
| 386 | Lexicographical Numbers | 31.00% | Medium |
| 385 | Mini Parser | 26.90% | Medium |
| 384 | Shuffle an Array | 45.50% | Medium |
| 383 | Ransom Note | 44.60% | Easy |
| 382 | Linked List Random Node | 48.60% | Medium |
| 381 | Insert Delete GetRandom O(1) - Duplicates allowed | 30.90% | Hard |
| 380 | Insert Delete GetRandom O(1) | 33.80% | Medium |
| 379 | Design Phone Directory $ | 25.80% | Medium |
| 378 | Kth Smallest Element in a Sorted Matrix | 40.20% | Medium |
| 377 | Combination Sum IV | 37.50% | Medium |
| 376 | Wiggle Subsequence | 35.80% | Medium |
| 375 | Guess Number Higher or Lower II | 28.30% | Medium |
| 374 | Guess Number Higher or Lower | 31.70% | Easy |
| 373 | Find K Pairs with Smallest Sums | 25.50% | Medium |
| 372 | Super Pow | 30.10% | Medium |
| 371 | Sum of Two Integers | 54.00% | Easy |
| 370 | Range Addition $ | 49.90% | Medium |
| 369 | Plus One Linked List $ | 50.10% | Medium |
| 368 | Largest Divisible Subset | 32.00% | Medium |
| 367 | Valid Perfect Square | 36.60% | Medium |
| 366 | Find Leaves of Binary Tree $ | 53.60% | Medium |
| 365 | Water and Jug Problem | 20.10% | Medium |
| 364 | Nested List Weight Sum II $ | 47.20% | Medium |
| 363 | Max Sum of Rectangle No Larger Than K | 27.00% | Hard |
| 362 | Design Hit Counter $ | 48.30% | Medium |
| 361 | Bomb Enemy $ | 32.60% | Medium |
| 360 | Sort Transformed Array $ | 40.80% | Medium |
| 359 | Logger Rate Limiter $ | 56.00% | Easy |
| 358 | Rearrange String k Distance Apart $ | 26.90% | Hard |
| 357 | Count Numbers with Unique Digits | 42.50% | Medium |
| 356 | Line Reflection $ | 28.70% | Medium |
| 355 | Design Twitter | 22.20% | Medium |
| 354 | Russian Doll Envelopes | 27.10% | Hard |
| 353 | Design Snake Game $ | 19.80% | Medium |
| 352 | Data Stream as Disjoint Intervals | 34.40% | Hard |
| 351 | Android Unlock Patterns $ | 32.00% | Medium |
| 350 | Intersection of Two Arrays II | 41.50% | Easy |
| 349 | Intersection of Two Arrays | 47.80% | Easy |
| 348 | Design Tic-Tac-Toe $ | 45.60% | Medium |
| 347 | Top K Frequent Elements | 44.50% | Medium |
| 346 | Moving Average from Data Stream $ | 69.20% | Easy |
| 345 | Reverse Vowels of a String | 35.30% | Easy |
| 344 | Reverse String | 58.90% | Easy |
| 343 | Integer Break | 43.60% | Medium |
| 342 | Power of Four | 34.10% | Easy |
| 341 | Flatten Nested List Iterator $ | 18.70% | Medium |
| 340 | Longest Substring with At Most K Distinct Characters $ | 36.30% | Hard |
| 339 | Nested List Weight Sum $ | 54.60% | Easy |
| 338 | Counting Bits | 55.40% | Medium |
| 337 | House Robber III | 37.00% | Medium |
| 336 | Palindrome Pairs | 18.70% | Hard |
| 335 | Self Crossing | 18.00% | Medium |
| 334 | Increasing Triplet Subsequence | 33.20% | Medium |
| 333 | Largest BST Subtree $ | 26.50% | Medium |
| 332 | Reconstruct Itinerary | 23.40% | Medium |
| 331 | Verify Preorder Serialization of a Binary Tree | 31.50% | Medium |
| 330 | Patching Array | 28.80% | Medium |
| 329 | Longest Increasing Path in a Matrix | 29.50% | Medium |
| 328 | Odd Even Linked List | 37.80% | Easy |
| 327 | Count of Range Sum | 24.30% | Hard |
| 326 | Power of Three | 35.30% | Easy |
| 325 | Maximum Size Subarray Sum Equals k $ | 39.60% | Easy |
| 324 | Wiggle Sort II | 20.10% | Medium |
| 323 | Number of Connected Components in an Undirected Graph $ | 43.30% | Medium |
| 322 | Coin Change | 24.90% | Medium |
| 321 | Create Maximum Number | 19.10% | Hard |
| 320 | Generalized Abbreviation $ | 40.40% | Medium |
| 319 | Bulb Switcher | 39.20% | Medium |
| 318 | Maximum Product of Word Lengths | 38.70% | Medium |
| 317 | Shortest Distance from All Buildings $ | 29.10% | Hard |
| 316 | Remove Duplicate Letters | 23.00% | Medium |
| 315 | Count of Smaller Numbers After Self | 28.20% | Hard |
| 314 | Binary Tree Vertical Order Traversal $ | 30.10% | Medium |
| 313 | Super Ugly Number | 31.20% | Medium |
| 312 | Burst Balloons | 24.50% | Medium |
| 311 | Sparse Matrix Multiplication $ | 40.00% | Medium |
| 310 | Minimum Height Trees | 20.20% | Medium |
| 309 | Best Time to Buy and Sell Stock with Cooldown | 32.60% | Medium |
| 308 | Range Sum Query 2D - Mutable $ | 20.30% | Hard |
| 307 | Range Sum Query - Mutable | 14.50% | Medium |
| 306 | Additive Number | 23.30% | Medium |
| 305 | Number of Islands II $ | 26.70% | Hard |
| 304 | Range Sum Query 2D - Immutable | 21.50% | Medium |
| 303 | Range Sum Query - Immutable | 25.70% | Easy |
| 302 | Smallest Rectangle Enclosing Black Pixels $ | 36.70% | Hard |
| 301 | Remove Invalid Parentheses | 27.00% | Hard |
| 300 | Longest Increasing Subsequence | 31.50% | Medium |
| 299 | Bulls and Cows | 23.80% | Easy |
| 298 | Binary Tree Longest Consecutive Sequence $ | 32.20% | Medium |
| 297 | Serialize and Deserialize Binary Tree | 23.80% | Medium |
| 296 | Best Meeting Point $ | 41.40% | Hard |
| 295 | Find Median from Data Stream | 18.60% | Hard |
| 294 | Flip Game II $ | 38.10% | Medium |
| 293 | Flip Game $ | 47.60% | Easy |
| 292 | Nim Game | 49.50% | Easy |
| 291 | Word Pattern II $ | 31.50% | Hard |
| 290 | Word Pattern | 26.50% | Easy |
| 289 | Game of Life | 32.60% | Medium |
| 288 | Unique Word Abbreviation $ | 16.80% | Easy |
| 287 | Find the Duplicate Number | 32.80% | Hard |
| 286 | Walls and Gates $ | 29.90% | Medium |
| 285 | Inorder Successor in BST $ | 32.50% | Medium |
| 284 | Peeking Iterator | 31.00% | Medium |
| 283 | Move Zeroes | 41.40% | Easy |
| 282 | Expression Add Operators | 18.90% | Hard |
| 281 | Zigzag Iterator $ | 37.20% | Medium |
| 280 | Wiggle Sort $ | 43.30% | Medium |
| 279 | Perfect Squares | 28.80% | Medium |
| 278 | First Bad Version | 19.80% | Easy |
| 277 | Find the Celebrity $ | 31.70% | Medium |
| 276 | Paint Fence $ | 25.00% | Easy |
| 275 | H-Index II | 31.40% | Medium |
| 274 | H-Index | 25.30% | Medium |
| 273 | Integer to English Words | 15.50% | Medium |
| 272 | Closest Binary Search Tree Value II $ | 26.90% | Hard |
| 271 | Encode and Decode Strings $ | 25.40% | Medium |
| 270 | Closest Binary Search Tree Value $ | 29.40% | Easy |
| 269 | Alien Dictionary $ | 16.50% | Hard |
| 268 | Missing Number | 34.70% | Medium |
| 267 | Palindrome Permutation II $ | 22.50% | Medium |
| 266 | Palindrome Permutation $ | 45.80% | Easy |
| 265 | Paint House II $ | 30.00% | Hard |
| 264 | Ugly Number II | 21.60% | Medium |
| 263 | Ugly Number | 32.60% | Easy |
| 262 | Trips and Users * | 16.10% | Hard |
| 261 | Graph Valid Tree $ | 25.40% | Medium |
| 260 | Single Number III | 37.60% | Medium |
| 259 | 3Sum Smaller $ | 34.20% | Medium |
| 258 | Add Digits | 46.50% | Easy |
| 257 | Binary Tree Paths | 21.90% | Easy |
| 256 | Paint House $ | 38.40% | Medium |
| 255 | Verify Preorder Sequence in Binary Search Tree $ | 32.30% | Medium |
| 254 | Factor Combinations $ | 29.00% | Medium |
| 253 | Meeting Rooms II $ | 28.80% | Medium |
| 252 | Meeting Rooms $ | 35.40% | Easy |
| 251 | Flatten 2D Vector $ | 28.30% | Medium |
| 250 | Count Univalue Subtrees $ | 32.70% | Medium |
| 249 | Group Shifted Strings $ | 25.20% | Easy |
| 248 | Strobogrammatic Number III $ | 21.80% | Hard |
| 247 | Strobogrammatic Number II $ | 26.70% | Medium |
| 246 | Strobogrammatic Number $ | 31.60% | Easy |
| 245 | Shortest Word Distance III $ | 43.20% | Medium |
| 244 | Shortest Word Distance II $ | 33.70% | Medium |
| 243 | Shortest Word Distance $ | 41.80% | Easy |
| 242 | Valid Anagram | 39.30% | Easy |
| 241 | Different Ways to Add Parentheses | 27.10% | Medium |
| 240 | Search a 2D Matrix II | 31.40% | Medium |
| 239 | Sliding Window Maximum | 24.30% | Hard |
| 238 | Product of Array Except Self | 42.40% | Medium |
| 237 | Delete Node in a Linked List | 50.90% | Easy |
| 236 | Lowest Common Ancestor of a Binary Tree | 28.30% | Medium |
| 235 | Lowest Common Ancestor of a Binary Search Tree | 38.90% | Medium |
| 234 | Palindrome Linked List | 23.80% | Easy |
| 233 | Number of Digit One | 16.10% | Medium |
| 232 | Implement Queue using Stacks | 37.40% | Easy |
| 231 | Power of Two | 31.30% | Easy |
| 230 | Kth Smallest Element in a BST | 30.50% | Medium |
| 229 | Majority Element II | 30.50% | Medium |
| 228 | Summary Ranges | 21.10% | Easy |
| 227 | Basic Calculator II | 18.00% | Medium |
| 226 | Invert Binary Tree | 35.40% | Easy |
| 225 | Implement Stack using Queues | 29.60% | Medium |
| 224 | Basic Calculator | 15.80% | Medium |
| 223 | Rectangle Area | 25.60% | Easy |
| 222 | Count Complete Tree Nodes | 19.40% | Medium |
| 221 | Maximal Square | 20.30% | Medium |
| 220 | Contains Duplicate III | 15.30% | Medium |
| 219 | Contains Duplicate II | 25.60% | Easy |
| 218 | The Skyline Problem | 16.20% | Hard |
| 217 | Contains Duplicate | 35.90% | Easy |
| 216 | Combination Sum III | 27.70% | Medium |
| 215 | Kth Largest Element in an Array | 27.30% | Medium |
| 214 | Shortest Palindrome | 16.80% | Hard |
| 213 | House Robber II | 26.30% | Medium |
| 212 | Word Search II | 15.00% | Hard |
| 211 | Add and Search Word - Data structure design | 20.70% | Medium |
| 210 | Course Schedule II | 19.30% | Medium |
| 209 | Minimum Size Subarray Sum | 22.90% | Medium |
| 208 | Implement Trie (Prefix Tree) | 24.80% | Medium |
| 207 | Course Schedule | 21.70% | Medium |
| 206 | Reverse Linked List | 31.50% | Easy |
| 205 | Isomorphic Strings | 24.20% | Easy |
| 204 | Count Primes | 19.00% | Easy |
| 203 | Remove Linked List Elements | 25.80% | Easy |
| 202 | Happy Number | 31.40% | Easy |
| 201 | Bitwise AND of Numbers Range | 23.30% | Medium |
| 200 | Number of Islands | 21.90% | Medium |
| 199 | Binary Tree Right Side View | 27.10% | Medium |
| 198 | House Robber | 28.80% | Easy |
| 197 | Rising Temperature * | 25.90% | Easy |
| 196 | Delete Duplicate Emails * | 19.00% | Easy |
| 195 | Tenth Line # | 32.20% | Easy |
| 194 | Transpose File # | 21.40% | Medium |
| 193 | Valid Phone Numbers # | 24.40% | Easy |
| 192 | Word Frequency # | 26.10% | Medium |
| 191 | Number of 1 Bits | 37.30% | Easy |
| 190 | Reverse Bits | 28.40% | Easy |
| 189 | Rotate Array | 17.80% | Easy |
| 188 | Best Time to Buy and Sell Stock IV | 17.30% | Hard |
| 187 | Repeated DNA Sequences | 19.50% | Medium |
| 186 | Reverse Words in a String II $ | 31.10% | Medium |
| 185 | Department Top Three Salaries * | 15.20% | Hard |
| 184 | Department Highest Salary * | 19.00% | Medium |
| 183 | Customers Who Never Order * | 33.70% | Easy |
| 182 | Duplicate Emails * | 38.10% | Easy |
| 181 | Employees Earning More Than Their Managers * | 41.00% | Easy |
| 180 | Consecutive Numbers * | 26.60% | Medium |
| 179 | Largest Number | 15.70% | Medium |
| 178 | Rank Scores * | 24.60% | Medium |
| 177 | Nth Highest Salary * | 16.30% | Medium |
| 176 | Second Highest Salary * | 25.00% | Easy |
| 175 | Combine Two Tables * | 34.40% | Easy |
| 174 | Dungeon Game | 17.70% | Hard |
| 173 | Binary Search Tree Iterator | 29.30% | Medium |
| 172 | Factorial Trailing Zeroes | 28.40% | Easy |
| 171 | Excel Sheet Column Number | 36.50% | Easy |
| 170 | Two Sum III - Data structure design $ | 24.70% | Easy |
| 169 | Majority Element | 35.00% | Easy |
| 168 | Excel Sheet Column Title | 18.10% | Easy |
| 167 | Two Sum II - Input array is sorted $ | 43.30% | Medium |
| 166 | Fraction to Recurring Decimal | 12.70% | Medium |
| 165 | Compare Version Numbers | 15.20% | Easy |
| 164 | Maximum Gap | 24.40% | Hard |
| 163 | Missing Ranges $ | 24.10% | Medium |
| 162 | Find Peak Element | 31.50% | Medium |
| 161 | One Edit Distance $ | 24.00% | Medium |
| 160 | Intersection of Two Linked Lists | 28.70% | Easy |
| 159 | Longest Substring with At Most Two Distinct Characters $ | 30.20% | Hard |
| 158 | Read N Characters Given Read4 II - Call multiple times $ | 22.30% | Hard |
| 157 | Read N Characters Given Read4 $ | 29.80% | Easy |
| 156 | Binary Tree Upside Down $ | 34.30% | Medium |
| 155 | Min Stack | 18.50% | Easy |
| 154 | Find Minimum in Rotated Sorted Array II | 31.90% | Hard |
| 153 | Find Minimum in Rotated Sorted Array | 33.30% | Medium |
| 152 | Maximum Product Subarray | 19.40% | Medium |
| 151 | Reverse Words in a String | 15.10% | Medium |
| 150 | Evaluate Reverse Polish Notation | 21.10% | Medium |
| 149 | Max Points on a Line | 12.60% | Hard |
| 148 | Sort List | 22.00% | Medium |
| 147 | Insertion Sort List | 26.40% | Medium |
| 146 | LRU Cache | 15.00% | Hard |
| 145 | Binary Tree Postorder Traversal | 32.40% | Hard |
| 144 | Binary Tree Preorder Traversal | 36.30% | Medium |
| 143 | Reorder List | 21.00% | Medium |
| 142 | Linked List Cycle II | 31.40% | Medium |
| 141 | Linked List Cycle | 36.30% | Medium |
| 140 | Word Break II | 17.70% | Hard |
| 139 | Word Break | 23.00% | Medium |
| 138 | Copy List with Random Pointer | 25.10% | Hard |
| 137 | Single Number II | 35.00% | Medium |
| 136 | Single Number | 45.10% | Medium |
| 135 | Candy | 20.50% | Hard |
| 134 | Gas Station | 25.70% | Medium |
| 133 | Clone Graph | 24.00% | Medium |
| 132 | Palindrome Partitioning II | 19.70% | Hard |
| 131 | Palindrome Partitioning | 26.70% | Medium |
| 130 | Surrounded Regions | 14.60% | Medium |
| 129 | Sum Root to Leaf Numbers | 30.30% | Medium |
| 128 | Longest Consecutive Sequence | 29.40% | Hard |
| 127 | Word Ladder | 19.30% | Medium |
| 126 | Word Ladder II | 12.90% | Hard |
| 125 | Valid Palindrome | 22.00% | Easy |
| 124 | Binary Tree Maximum Path Sum | 21.50% | Hard |
| 123 | Best Time to Buy and Sell Stock III | 23.90% | Hard |
| 122 | Best Time to Buy and Sell Stock II | 38.30% | Medium |
| 121 | Best Time to Buy and Sell Stock | 32.60% | Medium |
| 120 | Triangle | 27.40% | Medium |
| 119 | Pascal's Triangle II | 29.40% | Easy |
| 118 | Pascal's Triangle | 30.10% | Easy |
| 117 | Populating Next Right Pointers in Each Node II | 32.00% | Hard |
| 116 | Populating Next Right Pointers in Each Node | 36.20% | Medium |
| 115 | Distinct Subsequences | 26.30% | Hard |
| 114 | Flatten Binary Tree to Linked List | 28.80% | Medium |
| 113 | Path Sum II | 26.60% | Medium |
| 112 | Path Sum | 29.80% | Easy |
| 111 | Minimum Depth of Binary Tree | 29.10% | Easy |
| 110 | Balanced Binary Tree | 32.00% | Easy |
| 109 | Convert Sorted List to Binary Search Tree | 27.90% | Medium |
| 108 | Convert Sorted Array to Binary Search Tree | 34.00% | Medium |
| 107 | Binary Tree Level Order Traversal II | 31.10% | Easy |
| 106 | Construct Binary Tree from Inorder and Postorder Traversal | 26.80% | Medium |
| 105 | Construct Binary Tree from Preorder and Inorder Traversal | 26.40% | Medium |
| 104 | Maximum Depth of Binary Tree | 45.10% | Easy |
| 103 | Binary Tree Zigzag Level Order Traversal | 26.40% | Medium |
| 102 | Binary Tree Level Order Traversal | 29.30% | Easy |
| 101 | Symmetric Tree | 31.60% | Easy |
| 100 | Same Tree | 41.80% | Easy |
| 99 | Recover Binary Search Tree | 24.30% | Hard |
| 98 | Validate Binary Search Tree | 20.60% | Medium |
| 97 | Interleaving String | 20.80% | Hard |
| 96 | Unique Binary Search Trees | 36.00% | Medium |
| 95 | Unique Binary Search Trees II | 28.00% | Medium |
| 94 | Binary Tree Inorder Traversal | 36.20% | Medium |
| 93 | Restore IP Addresses | 21.00% | Medium |
| 92 | Reverse Linked List II | 26.10% | Medium |
| 91 | Decode Ways | 16.40% | Medium |
| 90 | Subsets II | 27.70% | Medium |
| 89 | Gray Code | 32.80% | Medium |
| 88 | Merge Sorted Array | 29.70% | Easy |
| 87 | Scramble String | 24.20% | Hard |
| 86 | Partition List | 27.50% | Medium |
| 85 | Maximal Rectangle | 22.00% | Hard |
| 84 | Largest Rectangle in Histogram | 22.60% | Hard |
| 83 | Remove Duplicates from Sorted List | 34.50% | Easy |
| 82 | Remove Duplicates from Sorted List II | 25.00% | Medium |
| 81 | Search in Rotated Sorted Array II | 31.40% | Medium |
| 80 | Remove Duplicates from Sorted Array II | 30.50% | Medium |
| 79 | Word Search | 20.30% | Medium |
| 78 | Subsets | 28.20% | Medium |
| 77 | Combinations | 30.90% | Medium |
| 76 | Minimum Window Substring | 18.90% | Hard |
| 75 | Sort Colors | 32.60% | Medium |
| 74 | Search a 2D Matrix | 31.60% | Medium |
| 73 | Set Matrix Zeroes | 31.40% | Medium |
| 72 | Edit Distance | 26.20% | Hard |
| 71 | Simplify Path | 20.00% | Medium |
| 70 | Climbing Stairs | 34.40% | Easy |
| 69 | Sqrt(x) | 23.10% | Medium |
| 68 | Text Justification | 14.60% | Hard |
| 67 | Add Binary | 24.70% | Easy |
| 66 | Plus One | 30.40% | Easy |
| 65 | Valid Number | 11.40% | Hard |
| 64 | Minimum Path Sum | 32.20% | Medium |
| 63 | Unique Paths II | 28.00% | Medium |
| 62 | Unique Paths | 32.80% | Medium |
| 61 | Rotate List | 21.70% | Medium |
| 60 | Permutation Sequence | 22.80% | Medium |
| 59 | Spiral Matrix II | 31.80% | Medium |
| 58 | Length of Last Word | 28.00% | Easy |
| 57 | Insert Interval | 21.40% | Hard |
| 56 | Merge Intervals | 22.40% | Hard |
| 55 | Jump Game | 27.00% | Medium |
| 54 | Spiral Matrix | 20.80% | Medium |
| 53 | Maximum Subarray | 34.50% | Medium |
| 52 | N-Queens II | 35.80% | Hard |
| 51 | N-Queens | 26.50% | Hard |
| 50 | Pow(x, n) | 26.70% | |
| 49 | Anagrams | 24.30% | Medium |
| 48 | Rotate Image | 31.90% | Medium |
| 47 | Permutations II | 25.80% | Hard |
| 46 | Permutations | 31.90% | Medium |
| 45 | Jump Game II | 24.20% | Hard |
| 44 | Wildcard Matching | 15.00% | Hard |
| 43 | Multiply Strings | 21.00% | Medium |
| 42 | Trapping Rain Water | 30.00% | Hard |
| 41 | First Missing Positive | 22.90% | Hard |
| 40 | Combination Sum II | 25.20% | Medium |
| 39 | Combination Sum | 27.90% | Medium |
| 38 | Count and Say | 25.20% | Easy |
| 37 | Sudoku Solver | 21.80% | Hard |
| 36 | Valid Sudoku | 27.20% | Easy |
| 35 | Search Insert Position | 35.40% | Medium |
| 34 | Search for a Range | 27.50% | Medium |
| 33 | Search in Rotated Sorted Array | 28.80% | Hard |
| 32 | Longest Valid Parentheses | 20.90% | Hard |
| 31 | Next Permutation | 25.00% | Medium |
| 30 | Substring with Concatenation of All Words | 19.40% | Hard |
| 29 | Divide Two Integers | 15.00% | Medium |
| 28 | Implement strStr() | 22.20% | Easy |
| 27 | Remove Element | 32.10% | Easy |
| 26 | Remove Duplicates from Sorted Array | 31.30% | Easy |
| 25 | Reverse Nodes in k-Group | 25.50% | Hard |
| 24 | Swap Nodes in Pairs | 32.50% | Medium |
| 23 | Merge k Sorted Lists | 21.10% | Hard |
| 22 | Generate Parentheses | 32.60% | Medium |
| 21 | Merge Two Sorted Lists | 32.70% | Easy |
| 20 | Valid Parentheses | 26.50% | Easy |
| 19 | Remove Nth Node From End of List | 27.10% | Easy |
| 18 | 4Sum | 21.70% | Medium |
| 17 | Letter Combinations of a Phone Number | 25.80% | Medium |
| 16 | 3Sum Closest | 26.90% | Medium |
| 15 | 3Sum | 16.90% | Medium |
| 14 | Longest Common Prefix | 25.50% | Easy |
| 13 | Roman to Integer | 34.00% | Easy |
| 12 | Integer to Roman | 33.80% | Medium |
| 11 | Container With Most Water | 32.00% | Medium |
| 10 | Regular Expression Matching | 20.70% | Hard |
| 9 | Palindrome Number | 28.30% | Easy |
| 8 | String to Integer (atoi) | 13.00% | Easy |
| 7 | Reverse Integer | 25.10% | Easy |
| 6 | ZigZag Conversion | 21.80% | Easy |
| 5 | Longest Palindromic Substring | 20.70% | Medium |
| 4 | Median of Two Sorted Arrays | 17.40% | Hard |
| 3 | Longest Substring Without Repeating Characters | 20.60% | Medium |
| 2 | Add Two Numbers | 21.10% | Medium |
| 1 | Two Sum | 17.70% | Medium |
欢迎关注博主的微信公众号，博主会在上面更新最新的解题报告，而且可以加博主微信好友哦～
这个 APP 展示了 LeetCode 上的题目，并且提供了博主自己的解法。
已下架，不再提供下载～
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Q用 Venmo 的朋友们也可以打赏哦，感谢大家的支持～
感谢 @notfresh 童鞋帮助博主从 Grandyang博客园 上提取文章的 Markdown 文本。