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Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise. In other words, return true if one of s1's...
Problem You have been given a String S consisting of uppercase and lowercase English alphabets. You need to change the case of each alphabet in this...
Given two strings s and t, return true if s is a subsequence of t, or false otherwise. ยท A subsequence of a string is a new string that is formed from...
