Print all permutations of a string

The problem of printing all the permutations of a string is one of the well-known problem of backtracking. Permutation is process to find all combinations in given string characters. For example.

Input : "ABC"

Output : ABC
         ACB
         BAC
         BCA
         CBA
         CAB

Using of factorial(n) we can find the number of permutations of string here n indicates number of characters in string. In above example length of text is 3 so (3 * 2) = 6.

We can write an efficient algorithm which are takes O(!n) time to printing all the permutable result. Here given code implementation process by using recursion.



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