algorithm-in-python/sort/quickSort.c

37 lines
823 B
C

/* mbinary
#########################################################################
# File : quickSort.c
# Author: mbinary
# Mail: zhuheqin1@gmail.com
# Blog: https://mbinary.xyz
# Github: https://github.com/mbinary
# Created Time: 2019-04-16 09:41
# Description:
#########################################################################
*/
int partition(int *arr, int i, int j)
{
int pivot = arr[j], p = i, q = j;
while (p < q) {
while (p < q && arr[p] <= pivot)++p;
if (p < q)arr[q--] = arr[p];
while (p < q && arr[q] > pivot)--q;
if (p < q)arr[p++] = arr[q];
}
arr[p] = pivot;
return p;
}
void quickSort(int *arr, int i, int j)
{
if (i < j) {
int p = partition(arr, i, j);
quickSort(arr, i, p - 1);
quickSort(arr, p + 1, j);
}
}