CNoodle

摘要： A query word matches a given pattern if we can insert lowercase letters to the pattern word so that it equals the query. (We may insert each character 阅读全文

摘要： Given a string s, return the number of unique palindromes of length three that are a subsequence of s. Note that even if there are multiple ways to ob 阅读全文

摘要： A good meal is a meal that contains exactly two different food items with a sum of deliciousness equal to a power of two. You can pick any two differe 阅读全文

摘要： Given the array orders, which represents the orders that customers have done in a restaurant. More specifically orders[i]=[customerNamei,tableNumberi, 阅读全文

摘要： You are given two m x n binary matrices grid1 and grid2 containing only 0's (representing water) and 1's (representing land). An island is a group of 阅读全文

摘要： You are given some lists of regions where the first region of each list includes all other regions in that list. Naturally, if a region X contains ano 阅读全文

摘要： There are n bulbs that are initially off. You first turn on all the bulbs, then you turn off every second bulb. On the third round, you toggle every t 阅读全文

摘要： Given an integer n, return true if and only if it is an Armstrong number. The k-digit number n is an Armstrong number if and only if the kth power of 阅读全文

摘要： An n-bit gray code sequence is a sequence of 2n integers where: Every integer is in the inclusive range [0, 2n - 1], The first integer is 0, An intege 阅读全文

摘要： A new online video game has been released, and in this video game, there are 15-minute rounds scheduled every quarter-hour period. This means that at  阅读全文

摘要： On an N x N grid, each square grid[i][j] represents the elevation at that point (i,j). Now rain starts to fall. At time t, the depth of the water ever 阅读全文

摘要： You are given an array colors, in which there are three colors: 1, 2 and 3. You are also given some queries. Each query consists of two integers i and 阅读全文

摘要： You are given an array of strings arr. A string s is formed by the concatenation of a subsequence of arr that has unique characters. Return the maximu 阅读全文

摘要： You have n packages that you are trying to place in boxes, one package in each box. There are m suppliers that each produce boxes of different sizes ( 阅读全文

摘要： Given an integer array nums, your goal is to make all elements in nums equal. To complete one operation, follow these steps: Find the largest value in 阅读全文

摘要： Given two n x n binary matrices mat and target, return true if it is possible to make mat equal to target by rotating mat in 90-degree increments, or 阅读全文

摘要： A triplet is an array of three integers. You are given a 2D integer array triplets, where triplets[i] = [ai, bi, ci] describes the ith triplet. You ar 阅读全文

摘要： You are given two strings s and p where p is a subsequence of s. You are also given a distinct 0-indexed integer array removable containing a subset o 阅读全文

摘要： You are given an array of strings words (0-indexed). In one operation, pick two distinct indices i and j, where words[i] is a non-empty string, and mo 阅读全文

摘要： Given a string s and an integer k, return true if you can use all the characters in s to construct k palindrome strings or false otherwise. Example 1: 阅读全文