Author: ACMer

Given a list of strings words and a string letters, return the length of longest string in words that can be made from letters in letters. If no word …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a Binary Tree, our task is to validate if it is a binary search tree. In a BST (Binary …

You are given a list of integers seats containing 1s and 0s. Each element seats represents a seat and is either occupied if seats = 1 or empty if …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a binary search tree root and an integer val, determine whether val is in the tree. Constraints n ≤ …

When unit testing, you often want to assert two things are equal. This is common for maps (dictionaries), where you may have a return map and the expected one. …