44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
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#include <stdio.h>
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void quicksort(int arr[], int low, int high) {
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if (low < high) {
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int pivot = arr[low]; // 选择基准元素
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int left = low + 1;
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int right = high;
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while (left <= right) {
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// 从左侧查找大于基准的元素
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while (left <= high && arr[left] <= pivot) { left++; }
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// 从右侧查找小于基准的元素
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while (right >= low && arr[right] > pivot) { right--; }
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// 如果找到需要交换的元素
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if (left < right) {
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int temp = arr[left]; arr[left] = arr[right];
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arr[right] = temp;
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}
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}
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// 将基准元素放到合适的位置
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arr[low] = arr[right];
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arr[right] = pivot;
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// 递归排序基准元素左侧和右侧的子数组
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quicksort(arr, low, right - 1);
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quicksort(arr, right + 1, high);
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}
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}
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void printArray(int arr[], int size) {
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for (int i = 0; i < size; i++) {
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printf("%d ", arr[i]);
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}
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printf("\n");
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}
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int main() {
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int arr[] = {10, 7, 8, 9, 1, 5};
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int n = sizeof(arr) / sizeof(arr[0]);
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printf("原始数组: \n");
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printArray(arr, n);
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quicksort(arr, 0, n - 1);
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printf("排序后的数组: \n");
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printArray(arr, n);
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return 0;
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}
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