摘要：
http://acm.pku.edu.cn/JudgeOnline/problem?id=3049参考别人代码写的：#include<stdio.h>int L, C;char list[27], set[27];void find(int i, int vovel, int ith){ if(ith == L) { if(vovel) printf("%s\n", set); return ; } for(; i<=C-L+ith; i++) { set[ith] = list[i]; find(i+1, vovel+(set[ith] == ' 阅读全文
