三个字母的全排列

以A，B,C为例

 1 # include
 2 using namespace std;
 3 int main()
 4 {
 5     char  c1,c2,c3;
 6     for (c1='A'; c1<='C'; ++c1)
 7         for (c2='A'; c2<='C'; ++c2)
 8             if (c1 ==c2) continue;
 9             else  for (c3='A'; c3<='C'; ++c3)
10                     if  ((c3==c1||c3==c2))
11                         continue;
12                     else cout << c1 <endl;
13 }

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转载于:https://www.cnblogs.com/sxmcACM/p/3415289.html