Problem 🤔 We're writing a string compression algorithm! Implement a method to perform basic…

Problem 🤔 Assume you have a method isSubstring which checks if one word is a substring of another…

Problem 🤔 Given a string with spaces, return the string, replacing each space with %20 . Our input…

Challenge 🤔 Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic…

Problem 🤔 Write a function that reverses a string. The input string is given as an array of…