c语言实现快速排序完整代码

以下是C语言实现快速排序的完整代码：

#include <stdio.h>

void quicksort(int a[], int first, int end);

int main() {
    int arr[10] = {9, 5, 3, 8, 1, 2, 6, 7, 4, 10};
    printf("排序前：");
    for (int i = 0; i < 10; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    quicksort(arr, 0, 9);
    printf("排序后：");
    for (int i = 0; i < 10; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    return 0;
}

void quicksort(int a[], int first, int end) {
    if (first >= end) {
        return;
    }
    int i = first, j = end, flag = a[first], exchange = 0;
    while (i < j) {
        while (i < j && a[j] >= flag) {
            j--;
        }
        while (i < j && a[i] <= flag) {
            i++;
        }
        if (i < j) {
            exchange = a[i];
            a[i] = a[j];
            a[j] = exchange;
        }
    }
    a[first] = a[i];
    a[i] = flag;
    quicksort(a, first, i - 1);
    quicksort(a, i + 1, end);
}