String - Let's Talk Algorithms

Longest Palindromic Substring Java

Problem Statement Given a string, Find the longest palindromic substring. Solution Explanation Understanding the question here is very simple, given a string RENTNOW, the substring NTN is a palindrome of length 3, and that would be the result. Brute Force Before we think of

Leetcode Easy

Balanced Parentheses Validation - Java

Problem Statement Given an string or expression which only consists of characters like (, ), [, ], {, } . Validate if the string has balanced parentheses. A string has balanced parentheses, if every open bracket has an associated closed one and they exist in the right order. Solution Explanation As

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 containing digits, determine the total number of ways to decode it.

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", "bd", "be", "bf", "cd"

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 straightforward where you add two binary values in string form. Carry

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