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Letter case permutation
The question can be found here https://leetcode.com/problems/letter-case-permutation
Given a string S, we can transform every letter individually to be
lowercase or uppercase to create another ...
11
votes
2
answers
457
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You need to diversify your strings
Challenge:
Write a program which prints all the permutations of a string in alphabetical order.
Specifications:
Your program should accept a file as its first argument.
The file contains input ...