Letter Case permutation
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[Algo Rhythm🕺💃] LeetCode 784. Letter Case PermutationAlgo Rhythm🕺💃/LeetCode 2020. 7. 27. 15:12
📚 Problem description Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible strings we could create. Examples: Input: S = "a1b2" Output: ["a1b2", "a1B2", "A1b2", "A1B2"] Input: S = "3z4" Output: ["3z4", "3Z4"] Input: S = "12345" Output: ["12345"] Note: S will be a string with length between 1 and 12. S wi..