杭电2000
#include <stdio.h>int main (void){char a,b,c,d,t;while(scanf("%c%c%c%c",&a,&b,&c,&d)!=EOF){www.zzzyk.comif(a>b){t=a,a=b,b=t;}if(a>c){t=a,a=c,c=t;}if(b>c){t=b,b=c,c=t;}printf("%c %c %c\n",a,b,c);}return 0;}
补充:软件开发 , C语言 ,