全排列

#include "iostream"  
using namespace std;


void permutation(char* a, int k, int m)
{
int i, j;
if (k == m)
{
for (i = 0; i <= m; i++)
cout << a[i];
cout << endl;
}
else
{


for (j = k; j <= m; j++)
{
swap(a[j], a[k]);
permutation(a, k + 1, m);
swap(a[j], a[k]);
}
}
}
int main(void)
{
char a[] = "abc";
cout << a << "所有全排列的结果为：" << endl;
permutation(a, 0, 2);
system("pause");
return 0;
}