Challenge 🤔 Design a logger system that receives a stream of messages along with their timestamps…

Problem 🤔 You are given coins of different denominations and a total amount of money amount. Write…

Problem 🤔 A message containing letters from A-Z can be encoded into numbers using the following…

Problem 🤔 A robot is located at the top-left corner of a m x n grid (marked 'Start' in the…

Problem 🤔 You are a professional robber planning to rob houses along a street. Each house has a…

Problem 🤔 You have a browser of one tab where you start on the homepage and you can visit another…