#include <stdio.h>
#include <string.h>
void swap(char *x, char *y)
{
char temp;
temp = *x;
*x = *y;
*y = temp;
}
void permute(char *a, int l, int r)
{
int i;
if (l == r)
printf("%s\n", a);
else
{
for (i = l; i <= r; i++)
{
swap((a+l), (a+i));
permute(a, l+1, r);
swap((a+l), (a+i));
}
}
}
int main()
{
char str[100];
scanf("%s",str);
int n = strlen(str);
permute(str, 0, n-1);
return 0;
}
- Problem Description
Consider the string Find the permutations of string ABC - Test Case 1
Input (stdin)ABC
Expected OutputABC
ACB
BAC
BCA
CBA
CAB - Test Case 2
Input (stdin)BHLY
Expected OutputBHLY
BHYL
BLHY
BLYH
BYLH
BYHL
HBLY
HBYL
HLBY
HLYB
HYLB
HYBL
LHBY
LHYB
LBHY
LBYH
LYBH
LYHB
YHLB
YHBL
YLHB
YLBH
YBLH
YBHL