正文内容加载中...
摘要：Problem Statement Given two numbers, hour and minutes. Return the smaller angle (in degrees) formed between the hour and the minute hand. Example 1: I 阅读全文
摘要：Problem Statement Given an array of integers nums. A pair (i,j) is called good if nums[i] == nums[j] and i < j. Return the number of good pairs. Examp 阅读全文
摘要：Methodology: READ MF! [Originally from the Post: System design interview: how to design a chat system (e.g., Facebook Messenger, WeChat or WhatsApp)] 阅读全文
摘要：Problem Statement You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed. All houses at 阅读全文
摘要：Problem Statement You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only cons 阅读全文
摘要：Problem Statement Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by 阅读全文
摘要：Problem Statement There are a total of numCourses courses you have to take, labeled from 0 to numCourses-1. Some courses may have prerequisites, for e 阅读全文
摘要：Problem Statement Problem Cameron and Jamie's kid is almost 3 years old! However, even though the child is more independent now, scheduling kid activi 阅读全文
摘要：Problem Statement Problem tl;dr: Given a string of digits S, insert a minimum number of opening and closing parentheses into it such that the resultin 阅读全文
摘要：Problem Statement Problem Vestigium means "trace" in Latin. In this problem we work with Latin squares and matrix traces. The trace of a square matrix 阅读全文