递归实现：字符串反向排序.

<span style="font-family:Microsoft YaHei;font-size:18px;">#include<stdio.h>#include<string.h>void reverse_string(char string[]){ int len=strlen(string); int i=0; if(len<2)return; else  {      char temp=string[i];      string[i]=string[len-1];      string[len-1]='\0';      reverse_string(string+1);      string[len-1]=temp;  }}int main(){  char a[]="abcdefg";  reverse_string(a);   printf("%s\n",a);  return 0;}</span>