摘要： 原题链接在这里：https://leetcode.com/problems/island-perimeter/ 题目： You are given a map in form of a two-dimensional integer grid where 1 represents land and 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/design-hit-counter/description/ 题目： Design a hit counter which counts the number of hits received in the past 5 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/logger-rate-limiter/ 题目： Design a logger system that receive stream of messages along with its timestamps, each 阅读全文