Created
December 30, 2013 13:34
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#include <cstdio> | |
#include <algorithm> | |
#include <string.h> | |
#include <vector> | |
using namespace std; | |
void permu(int all,int left,char str[],bool choosed[],vector<char> &temp); | |
bool cmp(char a,char b){ | |
return a<b; | |
} | |
/* | |
temp[]來存已選擇的字元 | |
choosed[]來表示哪些字元已被選擇 | |
all表示總共幾個字元 | |
left表示剩下幾個字元還沒選到 | |
*/ | |
int main() | |
{ | |
int n; | |
char str[15]; | |
scanf("%d",&n); | |
while(n--){ | |
scanf("%s",str); | |
sort(str,str+strlen(str),cmp); | |
bool choosed[15]={0}; | |
vector<char> temp; | |
permu(strlen(str),strlen(str),str,choosed,temp); | |
printf("\n"); | |
} | |
return 0; | |
} | |
void permu(int all,int left,char str[],bool choosed[],vector<char> &temp) | |
{ | |
if(left==0){ | |
for(int i=0;i<all;i++) | |
printf("%c",temp[i]); | |
printf("\n"); | |
} | |
else{ | |
for(int i=0;i<all;i++){ | |
//避免aab會重複的問題 | |
if(choosed[i]==0 && choosed[i+1]==1 && str[i]==str[i+1]) continue; | |
if(choosed[i]==0){ | |
choosed[i]=1; | |
temp.push_back(str[i]); | |
permu(all,left-1,str,choosed,temp); | |
temp.pop_back(); | |
choosed[i]=0; | |
} | |
} | |
} | |
} |
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