Given a string S, print those permutations of string S which are lexicographically greater than S. If there is no such permutation of string, print -1.
Input : BCA
Output : CAB, CBA
Here, S = “BCA”, and there are 2 strings “CAB, CBA” which are lexicographically greater than S.
Input : CBA
Output : -1
There is no string which is lexicographically greater than S, so the output is -1.
Approach: To solve the problem mentioned above we will use STL. Use next_permuation() and prev_permutation() functions to check and the lexicographically greater strings. If the string is greater then print it otherwise print -1.
Below is the implementation of above approach:
ACB BAC BCA CAB CBA
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