CNoodle

摘要： There is a circle of red and blue tiles. You are given an array of integers colors. The color of tile i is represented by colors[i]: colors[i] == 0 me 阅读全文

摘要： You are given an m x n matrix of characters box representing a side-view of a box. Each cell of the box is one of the following: A stone '#' A station 阅读全文

摘要： You are given an integer n representing the number of players in a game and a 2D array pick where pick[i] = [xi, yi] represents that the player x pick 阅读全文

摘要： You are given two integers m and n representing a 0-indexed m x n grid. You are also given two 2D integer arrays guards and walls where guards[i] = [r 阅读全文

摘要： You are given a string s consisting of the characters 'a', 'b', and 'c' and a non-negative integer k. Each minute, you may take either the leftmost ch 阅读全文

摘要： You have a bomb to defuse, and your time is running out! Your informer will provide you with a circular array code of length of n and a key k. To decr 阅读全文

摘要： An image smoother is a filter of the size 3 x 3 that can be applied to each cell of an image by rounding down the average of the cell and the eight su 阅读全文

摘要： You are given two integer arrays persons and times. In an election, the ith vote was cast for persons[i] at time times[i]. For each query at a time t, 阅读全文

摘要： Design a data structure to find the frequency of a given value in a given subarray. The frequency of a value in a subarray is the number of occurrence 阅读全文

摘要： You are given an m x n binary matrix grid. A row or column is considered palindromic if its values read the same forward and backward. You can flip an 阅读全文

摘要： You are given an integer n indicating there are n specialty retail stores. There are m product types of varying amounts, which are given as a 0-indexe 阅读全文

摘要： Given two integer arrays arr1 and arr2, and the integer d, return the distance value between the two arrays. The distance value is defined as the numb 阅读全文

摘要： You are given a 2D integer array items where items[i] = [pricei, beautyi] denotes the price and beauty of an item respectively. You are also given a 0 阅读全文

摘要： Given a string s, return the maximum length of a substring such that it contains at most two occurrences of each character. Example 1: Input: s = "bcb 阅读全文

摘要： You are given an integer array nums and two positive integers m and k. Return the maximum sum out of all almost unique subarrays of length k of nums. 阅读全文

摘要： Given an array of integers arr and two integers k and threshold, return the number of sub-arrays of size k and average greater than or equal to thresh 阅读全文

摘要： The bitwise AND of an array nums is the bitwise AND of all integers in nums. For example, for nums = [1, 5, 3], the bitwise AND is equal to 1 & 5 & 3 阅读全文

摘要： In one operation, you can swap any two adjacent elements if they have the same number of set bits. You are allowed to do this operation any number of 阅读全文

摘要： Given a string word, compress it using the following algorithm: Begin with an empty string comp. While word is not empty, use the following operation: 阅读全文

摘要： 自己曾经做了一个网站部署在一台 ubuntu 服务器上，但是由于一开始不会配置 SSL，所以花钱买了付费的 SSL。最近发现了 Let's Encrypt，可以免费申请 SSL 证书，下面是详细的教程。 我的网站是一个 React 的项目，所以我的服务器上只是一个简单的 Node.js 环境 + N 阅读全文