CNoodle

摘要： Given a 2D grid consists of 0s (land) and 1s (water). An island is a maximal 4-directionally connected group of 0s and a closed island is an island to 阅读全文

摘要： You are given the logs for users' actions on LeetCode, and an integer k. The logs are represented by a 2D integer array logs where each logs[i] = [IDi 阅读全文

摘要： A password is said to be strong if it satisfies all the following criteria: It has at least 8 characters. It contains at least one lowercase letter. I 阅读全文

摘要： You are given a positive integer n, indicating that we initially have an n x n 0-indexed integer matrix mat filled with zeroes. You are also given a 2 阅读全文

摘要： You are given an array nums that consists of non-negative integers. Let us define rev(x) as the reverse of the non-negative integer x. For example, re 阅读全文

摘要： You are given two strings sentence1 and sentence2, each representing a sentence composed of words. A sentence is a list of words that are separated by 阅读全文

摘要： You are given a tree (i.e. a connected, undirected graph that has no cycles) rooted at node 0 consisting of n nodes numbered from 0 to n - 1. The tree 阅读全文

摘要： As the ruler of a kingdom, you have an army of wizards at your command. You are given a 0-indexed integer array strength, where strength[i] denotes th 阅读全文

摘要： You are given a tree (i.e. a connected, undirected graph that has no cycles) consisting of n nodes numbered from 0 to n - 1 and exactly n - 1 edges. T 阅读全文

摘要： You are given a string s that contains some bracket pairs, with each pair containing a non-empty key. For example, in the string "(name)is(age)yearsol 阅读全文

摘要： The variance of a string is defined as the largest difference between the number of occurrences of any 2 characters present in the string. Note the tw 阅读全文

摘要： Given an array of points where points[i] = [xi, yi] represents a point on the X-Y plane, return the maximum number of points that lie on the same stra 阅读全文

摘要： You are given a 0-indexed integer array nums representing the contents of a pile, where nums[0] is the topmost element of the pile. In one move, you c 阅读全文

摘要： It is a sweltering summer day, and a boy wants to buy some ice cream bars. At the store, there are n ice cream bars. You are given an array costs of l 阅读全文

摘要： You are given a 0-indexed array nums consisting of positive integers, representing targets on a number line. You are also given an integer space. You 阅读全文

摘要： You are given a 0-indexed integer array tasks, where tasks[i] represents the difficulty level of a task. In each round, you can complete either 2 or 3 阅读全文

摘要： You are given an array of positive integers price where price[i] denotes the price of the ith candy and a positive integer k. The store sells baskets 阅读全文

摘要： A sentence is a list of tokens separated by a single space with no leading or trailing spaces. Every token is either a positive number consisting of d 阅读全文

摘要： Given a string s, return the number of homogenous substrings of s. Since the answer may be too large, return it modulo 109 + 7. A string is homogenous 阅读全文

摘要： You are given an integer array nums of length n, and an integer array queries of length m. Return an array answer of length m where answer[i] is the m 阅读全文