How do you find permutation and combination of given String?

[ddisplaysystems]

How do you find permutation and combination of given String?

 

[Astrologer Mahendhar]

Try each of the letters in turn as the first letter and then find all the permutations of the remaining letters using a recursive call.
The base case is when the input is an empty string the only permutation is the empty string.

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[mayoclinic]

thanks for sharing with us