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  1. #include <iostream>
  2. using namespace std;
  3. #define swap(x,y,t)  ((t)=(x), (x)=(y), (y)=(t))
  4. void perm(char *list, int i, int n);
  5.  
  6. int main(){
  7.     char a[4]={'a','b','c'};
  8.     perm(a,0,2);
  9.     //cout<<a<<endl;
  10.  
  11.  
  12.     return 0;
  13. }
  14.  
  15. void perm(char *list, int i, int n){
  16.     int j, temp;
  17.     if (i==n){
  18.         for (j=0; j<=n; j++)
  19.             printf("%c", list[j]);
  20.         printf("     ");
  21.     }
  22.     else {
  23.         for (j=i; j<=n; j++){
  24.             swap(list[i],list[j],temp);
  25.             perm(list,i+1,n);
  26.             swap(list[i],list[j],temp);
  27.             //cout<<list<<endl;
  28.         }
  29.     }
  30. }
  31.  
Success #stdin #stdout 0.02s 2680KB
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stdin
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Standard input is empty
stdout
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abc     acb     bac     bca     cba     cab
https://ideone.com/cwwWg
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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