【C语言】快速排序优质算法的动态显示和字符串的快排

快速排序的动态显示比较简单，不多说，直接上代码：

//快速排序动态显示
#include<stdio.h>
#include <stdlib.h>
#include <Windows.h>
void swap(int arry[],int num1, int num2)
{
             int temp = arry[num1];
            arry[num1] = arry[num2];
            arry[num2] = temp;
}

void show_arry(int arry[],int len)
{
             int i =0;
             for(i = 0;i < len;i++)
            {
                        printf( "%d ",arry[i]);
            }
            printf( "\n");
}

void my_sqort(int arry[],int left, int right,int len)
{
             int last;
             int i = 0;
             if(left >= right)
            {
                         return;
            }
            swap(arry,left,(left+right)/2);
            last = left;
             for(i = left+1;i <= right;i++)
            {
                         if(arry[i] < arry[left])
                        {
                                    swap(arry,i,++last);
                        }
            }
            show_arry(arry,len);
             //for(i = 0;i<1000000000;i++)
             //{
             //          ;
             //}
            Sleep(2000);
            system( "cls");
            swap(arry,left,last);
            my_sqort(arry,left,last-1,len);
            my_sqort(arry,last+1,right,len);

}

int main()
{
             int arry[] = {11,5,23,45,77,9,556,23,11};
            my_sqort(arry,0,( sizeof(arry)/sizeof (arry[0]))-1,sizeof(arry)/ sizeof(arry[0]));
            show_arry(arry, sizeof(arry)/sizeof (arry[0]));
             return 0;
}

下面是字符串的快速排序：

1.注意在函数中比较字符串的操作需要运用二级指针进行操作，否则无法对指针的地址进行变换。

2.原理跟快速排序一个意思。

比较简单，只要注意函数字符串的操作有效性就OK：

代码：

#include <stdio.h>
#include <string.h>
#include <Windows.h>
#include <stdlib.h>
int compare(char **arry,int left, int right)
{
             return strcmp(*(char **)(arry+left),*(char **)(arry+right));
}

void swap(char **arry,int left, int right)
{
             char *temp = *(arry+left);
            *(arry+left) = *(arry+right);
            *(arry+right) = temp;
}

void my_csqort(char **arry,int left, int right)
{
             int last = 0;
             int i = 0;
             if(left >=right)
            {
                         return;
            }
            swap(arry,left,(left+right)/2);
            last = left;
             for(i = left+1;i <= right;i++)
            {
                         if(compare(arry,left,i) > 0)
                        {
                                    swap(arry,i,++last);
                        }
            }
            swap(arry,last,left);
             for(i = 0;i<5;i++)
            {
                        printf( "%s\n",arry[i]);
            }
            Sleep(2000);
            system( "cls");
            my_csqort(arry,left,last-1);
            my_csqort(arry,last+1,right);
}
int main()
{
             int i = 0;
             char *arry[] = {"bbbbb" ,"aaaaa", "ccccc","xxxxx" ,"ddddd"};
            my_csqort(arry,0, sizeof(arry)/sizeof (arry[0])-1);
             for(i = 0;i<5;i++)
            {
                        printf( "%s\n",arry[i]);
            }
            printf( "%d",strcmp("xxxxx" ,"qqqqq"));
             return 0;
}