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feature/qu
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feature/qu
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@@ -1,8 +1,17 @@
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name: OpenAI Code Review
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uses: bhavik/gitea-code-review-action@v0.1
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with:
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PROGRAMMING_LANGUAGE: 'JavaScript'
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REVIEW_COMMENT_PREFIX: 'openai:'
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FULL_REVIEW_COMMENT: 'openai'
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OPENAI_TOKEN: ${{ secrets.OPENAI_TOKEN }}
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GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
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name: Code Review
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on:
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issue_comment:
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types: [created, edited]
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jobs:
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code-review:
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runs-on: ubuntu-latest
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steps:
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- name: OpenAI Code Review
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uses: bhavik/gitea-code-review-action@v0.1
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with:
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PROGRAMMING_LANGUAGE: 'JavaScript'
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OPENAI_TOKEN: ${{ secrets.OPENAI_TOKEN }}
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GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
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FULL_REVIEW_COMMENT: 'openai'
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REVIEW_COMMENT_PREFIX: 'openai:'
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222
js/quicksort.js
222
js/quicksort.js
@@ -4,9 +4,13 @@
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* 空间复杂度: O(log n)
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*/
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// 基本快速排序实现
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/**
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* 快速排序主函数
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* @param {Array} arr - 要排序的数组
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* @returns {Array} - 排序后的数组
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*/
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function quickSort(arr) {
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// 基本情况:如果数组长度小于等于1,直接返回
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// 如果数组长度小于等于1,直接返回
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if (arr.length <= 1) {
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return arr;
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}
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@@ -25,157 +29,127 @@ function quickSort(arr) {
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}
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}
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// 递归排序左右两部分,然后合并
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// 递归排序左右两部分,并合并结果
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return [...quickSort(left), pivot, ...quickSort(right)];
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}
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// 原地快速排序(更高效,不创建新数组)
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function quickSortInPlace(arr, left = 0, right = arr.length - 1) {
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if (left < right) {
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const pivotIndex = partition(arr, left, right);
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quickSortInPlace(arr, left, pivotIndex - 1);
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quickSortInPlace(arr, pivotIndex + 1, right);
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/**
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* 原地快速排序(优化版本,节省空间)
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* @param {Array} arr - 要排序的数组
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* @param {number} low - 起始索引
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* @param {number} high - 结束索引
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*/
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function quickSortInPlace(arr, low = 0, high = arr.length - 1) {
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if (low < high) {
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const pivotIndex = partition(arr, low, high);
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quickSortInPlace(arr, low, pivotIndex - 1);
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quickSortInPlace(arr, pivotIndex + 1, high);
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}
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return arr;
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}
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// 分区函数
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function partition(arr, left, right) {
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// 选择最右边的元素作为基准值
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const pivot = arr[right];
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let i = left - 1;
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/**
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* 分区函数
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* @param {Array} arr - 数组
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* @param {number} low - 起始索引
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* @param {number} high - 结束索引
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* @returns {number} - 基准值的最终位置
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*/
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function partition(arr, low, high) {
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// 选择最后一个元素作为基准值
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const pivot = arr[high];
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let i = low - 1; // 小于基准值的元素的最后位置
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// 将小于基准值的元素移到左边
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for (let j = left; j < right; j++) {
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for (let j = low; j < high; j++) {
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// 如果当前元素小于等于基准值
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if (arr[j] <= pivot) {
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i++;
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[arr[i], arr[j]] = [arr[j], arr[i]]; // 交换元素
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}
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}
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// 将基准值放到正确的位置
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[arr[i + 1], arr[right]] = [arr[right], arr[i + 1]];
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return i + 1;
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}
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// 优化的快速排序(三数取中法选择基准值)
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function quickSortOptimized(arr, left = 0, right = arr.length - 1) {
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if (left < right) {
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const pivotIndex = partitionOptimized(arr, left, right);
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quickSortOptimized(arr, left, pivotIndex - 1);
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quickSortOptimized(arr, pivotIndex + 1, right);
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}
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return arr;
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}
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// 优化的分区函数(三数取中法)
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function partitionOptimized(arr, left, right) {
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// 三数取中法选择基准值
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const mid = Math.floor((left + right) / 2);
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const pivot = medianOfThree(arr, left, mid, right);
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// 将基准值移到最右边
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[arr[pivot], arr[right]] = [arr[right], arr[pivot]];
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let i = left - 1;
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for (let j = left; j < right; j++) {
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if (arr[j] <= arr[right]) {
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i++;
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// 交换元素
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[arr[i], arr[j]] = [arr[j], arr[i]];
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}
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}
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[arr[i + 1], arr[right]] = [arr[right], arr[i + 1]];
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// 将基准值放到正确的位置
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[arr[i + 1], arr[high]] = [arr[high], arr[i + 1]];
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return i + 1;
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}
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// 三数取中法
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function medianOfThree(arr, left, mid, right) {
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const a = arr[left];
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const b = arr[mid];
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const c = arr[right];
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if (a < b) {
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if (b < c) return mid;
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else if (a < c) return right;
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else return left;
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} else {
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if (a < c) return left;
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else if (b < c) return right;
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else return mid;
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/**
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* 三路快速排序(处理重复元素较多的数组)
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* @param {Array} arr - 要排序的数组
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* @param {number} low - 起始索引
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* @param {number} high - 结束索引
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*/
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function quickSortThreeWay(arr, low = 0, high = arr.length - 1) {
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if (low < high) {
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const [lt, gt] = partitionThreeWay(arr, low, high);
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quickSortThreeWay(arr, low, lt - 1);
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quickSortThreeWay(arr, gt + 1, high);
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}
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return arr;
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}
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/**
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* 三路分区函数
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* @param {Array} arr - 数组
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* @param {number} low - 起始索引
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* @param {number} high - 结束索引
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* @returns {Array} - [lt, gt] 小于和大于基准值的边界
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*/
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function partitionThreeWay(arr, low, high) {
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const pivot = arr[low];
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let lt = low; // 小于基准值的右边界
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let gt = high; // 大于基准值的左边界
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let i = low + 1; // 当前扫描位置
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while (i <= gt) {
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if (arr[i] < pivot) {
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[arr[lt], arr[i]] = [arr[i], arr[lt]];
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lt++;
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i++;
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} else if (arr[i] > pivot) {
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[arr[gt], arr[i]] = [arr[i], arr[gt]];
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gt--;
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} else {
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i++;
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}
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}
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return [lt, gt];
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}
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// 测试函数
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function testQuickSort() {
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console.log("=== 快速排序算法测试 ===");
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// 测试用例
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// 测试数据
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const testCases = [
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[64, 34, 25, 12, 22, 11, 90],
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[5, 2, 4, 6, 1, 3],
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[1],
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[],
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[3, 3, 3, 3],
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[9, 8, 7, 6, 5, 4, 3, 2, 1]
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[3, 3, 3, 3, 3],
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[9, 8, 7, 6, 5, 4, 3, 2, 1],
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[1, 2, 3, 4, 5, 6, 7, 8, 9]
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];
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testCases.forEach((testCase, index) => {
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console.log(`\n测试用例 ${index + 1}: [${testCase.join(', ')}]`);
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console.log(`\n测试用例 ${index + 1}:`);
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console.log(`原始数组: [${testCase}]`);
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// 测试基本快速排序
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const arr1 = [...testCase];
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const result1 = quickSort(arr1);
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console.log(`基本快速排序: [${result1.join(', ')}]`);
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// 测试标准快速排序
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const sorted1 = quickSort([...testCase]);
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console.log(`标准快排: [${sorted1}]`);
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// 测试原地快速排序
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const arr2 = [...testCase];
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const result2 = quickSortInPlace(arr2);
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console.log(`原地快速排序: [${result2.join(', ')}]`);
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// 测试优化快速排序
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const arr3 = [...testCase];
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const result3 = quickSortOptimized(arr3);
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console.log(`优化快速排序: [${result3.join(', ')}]`);
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});
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}
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// 性能测试函数
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function performanceTest() {
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console.log("\n=== 性能测试 ===");
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// 生成随机数组
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const generateRandomArray = (size) => {
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return Array.from({length: size}, () => Math.floor(Math.random() * 1000));
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};
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const sizes = [100, 1000, 10000];
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sizes.forEach(size => {
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const arr = generateRandomArray(size);
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console.log(`\n数组大小: ${size}`);
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// 测试基本快速排序
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const arr1 = [...arr];
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const start1 = performance.now();
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quickSort(arr1);
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const end1 = performance.now();
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console.log(`基本快速排序: ${(end1 - start1).toFixed(2)}ms`);
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// 测试原地快速排序
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const arr2 = [...arr];
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const start2 = performance.now();
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quickSortInPlace(arr2);
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const end2 = performance.now();
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console.log(`原地快速排序: ${(end2 - start2).toFixed(2)}ms`);
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console.log(`原地快排: [${arr2}]`);
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// 测试优化快速排序
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const arr3 = [...arr];
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const start3 = performance.now();
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quickSortOptimized(arr3);
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const end3 = performance.now();
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console.log(`优化快速排序: ${(end3 - start3).toFixed(2)}ms`);
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// 测试三路快速排序
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const arr3 = [...testCase];
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quickSortThreeWay(arr3);
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console.log(`三路快排: [${arr3}]`);
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});
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}
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@@ -184,9 +158,9 @@ if (typeof module !== 'undefined' && module.exports) {
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module.exports = {
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quickSort,
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quickSortInPlace,
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quickSortOptimized,
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testQuickSort,
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performanceTest
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quickSortThreeWay,
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partition,
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partitionThreeWay
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};
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}
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@@ -195,14 +169,8 @@ if (typeof window !== 'undefined') {
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// 将函数添加到全局作用域
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window.quickSort = quickSort;
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window.quickSortInPlace = quickSortInPlace;
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window.quickSortOptimized = quickSortOptimized;
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window.testQuickSort = testQuickSort;
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window.performanceTest = performanceTest;
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window.quickSortThreeWay = quickSortThreeWay;
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console.log("快速排序算法已加载,可以使用以下函数:");
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console.log("- quickSort(arr): 基本快速排序");
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console.log("- quickSortInPlace(arr): 原地快速排序");
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console.log("- quickSortOptimized(arr): 优化快速排序");
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console.log("- testQuickSort(): 运行测试用例");
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console.log("- performanceTest(): 运行性能测试");
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// 自动运行测试
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testQuickSort();
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}
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14
quicksort.py
Normal file
14
quicksort.py
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@@ -0,0 +1,14 @@
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def quick_sort(arr):
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if len(arr) <= 1:
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return arr
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pivot = arr[len(arr) // 2] # 选取中间元素作为基准
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left = [x for x in arr if x < pivot]
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middle = [x for x in arr if x == pivot]
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right = [x for x in arr if x > pivot]
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return quick_sort(left) + middle + quick_sort(right)
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# 示例
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nums = [3, 6, 8, 10, 1, 2, 1]
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print("排序前:", nums)
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print("排序后:", quick_sort(nums))
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Reference in New Issue
Block a user