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4 votes
2 answers
772 views

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 ...
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11 votes
2 answers
457 views

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 ...
Legato's user avatar
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