you can use flag[256];
now you just need to check
loop:
flag[str[i]]==0)
{
//swap()
//permute function call
//swap()
flag[str[i]=1;
}
done
On 7/3/12, Nishant Pandey <[email protected]> wrote:
> 1) Find all permutations of a string.
> 2) Improve it so that the permutations are not repeated, Eg=> string is
> "aaaa"
> Answer should be just aaaa once not 4! times.
>
> i want suggestion to improve the recursive code in case of 2) case .
>
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