#include
void perm(int* data, int n, int curr)
{
if (curr==n-1)
{
for (int i = 0; i < n; ++i)
printf("%d", data[i]);
printf("\n");
}
else
{
for (int i = curr; i < n; ++i)
{
int t;
t = data[curr], data[curr] = data[i], data[i] = t;
perm(data, n, curr+1);
t = data[curr], data[curr] = data[i], data[i] = t;
}
}
}
int main()
{
int array[128] = {0};
int n = 0, i = 0;
scanf("%d", &n);/*没有数据合法性检查*/
for (i = 0; i < n; ++i) array[i] = i+1;
perm(array, n, 0);
return 0;
}
4
1234
1243
1324
1342
1432
1423
2134
2143
2314
2341
2431
2413
3214
3241
3124
3142
3412
3421
4231
4213
4321
4312
4132
4123
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