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Merge c5016a0229 into 2c67b48c21

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Gustav Ekner 2024-04-25 08:30:27 +08:00 committed by GitHub
commit d01c4ed12d
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4 changed files with 16 additions and 27 deletions
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18
src/algorithms/sorting/insertion-sort/InsertionSort.js
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@ -6,7 +6,7 @@ export default class InsertionSort extends Sort {
// Go through all array elements...
for (let i = 1; i < array.length; i += 1) {
let currentIndex = i;
let j = i;
// Call visiting callback.
this.callbacks.visitingCallback(array[i]);
@ -14,23 +14,17 @@ export default class InsertionSort extends Sort {
// 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])
array[j - 1] !== undefined
&& this.comparator.lessThan(array[j], array[j - 1])
) {
// Call visiting callback.
this.callbacks.visitingCallback(array[currentIndex - 1]);
this.callbacks.visitingCallback(array[j - 1]);
// Swap the elements.
[
array[currentIndex - 1],
array[currentIndex],
] = [
array[currentIndex],
array[currentIndex - 1],
];
[array[j - 1], array[j]] = [array[j], array[j - 1]];
// Shift current index left.
currentIndex -= 1;
j -= 1;
}
}

4
src/algorithms/sorting/quick-sort/QuickSortInPlace.js
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@ -39,9 +39,7 @@ export default class QuickSortInPlace extends Sort {
* @param {number} rightIndex
*/
const swap = (leftIndex, rightIndex) => {
const temp = array[leftIndex];
array[leftIndex] = array[rightIndex];
array[rightIndex] = temp;
[array[leftIndex], array[rightIndex]] = [array[rightIndex], array[leftIndex]];
};
const pivot = array[highIndex];

16
src/algorithms/sorting/shell-sort/ShellSort.js
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@ -12,22 +12,20 @@ export default class ShellSort extends Sort {
while (gap > 0) {
// Go and compare all distant element pairs.
for (let i = 0; i < (array.length - gap); i += 1) {
let currentIndex = i;
let j = i;
let gapShiftedIndex = i + gap;
while (currentIndex >= 0) {
while (j >= 0) {
// Call visiting callback.
this.callbacks.visitingCallback(array[currentIndex]);
this.callbacks.visitingCallback(array[j]);
// Compare and swap array elements if needed.
if (this.comparator.lessThan(array[gapShiftedIndex], array[currentIndex])) {
const tmp = array[currentIndex];
array[currentIndex] = array[gapShiftedIndex];
array[gapShiftedIndex] = tmp;
if (this.comparator.lessThan(array[gapShiftedIndex], array[j])) {
[array[j], array[gapShiftedIndex]] = [array[gapShiftedIndex], array[j]];
}
gapShiftedIndex = currentIndex;
currentIndex -= gap;
gapShiftedIndex = j;
j -= gap;
}
}

5
src/data-structures/heap/Heap.js
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@ -95,9 +95,8 @@ export default class Heap {
* @param {number} indexTwo
*/
swap(indexOne, indexTwo) {
const tmp = this.heapContainer[indexTwo];
this.heapContainer[indexTwo] = this.heapContainer[indexOne];
this.heapContainer[indexOne] = tmp;
[this.heapContainer[indexOne], this.heapContainer[indexTwo]] = [
this.heapContainer[indexTwo], this.heapContainer[indexOne]];
}
/**