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InsertionSort.js
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InsertionSort.js
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import Sort from '../Sort';
export default class InsertionSort extends Sort {
sort(originalArray) {
const array = [...originalArray];
// Go through all array elements...
for (let i = 1; i < array.length; i += 1) {
let currentIndex = i;
// Call visiting callback.
this.callbacks.visitingCallback(array[i]);
// Check if previous element is greater than current element.
// If so, swap the two elements.
while (
array[currentIndex - 1] !== undefined
&& this.comparator.lessThan(array[currentIndex], array[currentIndex - 1])
) {
// Call visiting callback.
this.callbacks.visitingCallback(array[currentIndex - 1]);
// Swap the elements.
[
array[currentIndex - 1],
array[currentIndex],
] = [
array[currentIndex],
array[currentIndex - 1],
];
// Shift current index left.
currentIndex -= 1;
}
}
return array;
}
}