摘要：In a deck of cards, every card has a unique integer. You can order the deck in any order you want. Initially, all the cards start face down (unreveale 阅读全文

摘要：Given an array of 4 digits, return the largest 24 hour time that can be made. The smallest 24 hour time is 00:00, and the largest is 23:59. Starting f 阅读全文

摘要：You have an initial power P, an initial score of 0 points, and a bag of tokens. Each token can be used at most once, has a value token[i], and has pot 阅读全文

摘要：On a 2D plane, we place stones at some integer coordinate points. Each coordinate point may have at most one stone. Now, a move consists of removing a 阅读全文