String Decode Ways Leetcode Problem Statement A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message

String Letter Combinations of a Phone Number Problem Statement Given a digit string, return all possible letter combinations that the number could represent. Input:Digit string "23" Output: ["ad", "ae", "af", "

Interview Questions Add Binary Leetcode Problem Statement Given two binary strings, return their sum (also a binary string). For example,a = "11", b = "1" Return "100". Solution Explanation The question is very