C++快速排序算法代码
时间: 2023-10-27 15:25:24 浏览: 55
以下是C语言中的快速排序算法代码:
```c
void swap(int *arr, int i, int j) {
int temp = arr[i];
arr[i = arr[j];
arr[j = temp;
}
int quick(int *arr, int leftbound, int rightbound) {
int leftptr = leftbound + 1;
int rightptr = rightbound;
int pivot = arr[leftbound];
while (leftptr <= rightptr) {
while (leftptr <= rightptr && arr[leftptr < pivot) {
leftptr++;
}
while (leftptr <= rightptr && arr[rightptr >= pivot) {
rightptr--;
}
if (leftptr < rightptr) {
swap(arr, leftptr, rightptr);
}
}
swap(arr, leftbound, rightptr);
return rightptr;
}
void quick_sort(int *arr, int left, int right) {
if (right <= left) {
return;
}
int mid = quick(arr, left, right);
quick_sort(arr, left, mid-1);
quick_sort(arr, mid+1, right);
}
```
以上代码实现了C语言中的快速排序算法。快速排序算法的基本思想是通过选取一个基准值,将数组分为两个子数组,然后对子数组进行递归排序操作。排序过程中会不断地交换元素位置,使得基准值左侧的元素小于等于基准值,右侧的元素大于等于基准值。最终,整个数组将被排序。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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