虚假的全排列

#include<stdio.h>
int main(){
    int a, b, c;
    for (a = 1 ; a < 4; a ++)
        for (b = 1 ; b < 4 ; b ++)
            for (c = 1 ; c < 4 ; c ++)
                if (a != b && a != c && b != c) printf("%d%d%d\n",a, b, c);

    return 0;
}

运行结果：