CNoodle

摘要： For a string sequence, a string word is k-repeating if word concatenated k times is a substring of sequence. The word's maximum k-repeating value is t 阅读全文

摘要： You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). You can move up, down, left, or right from and to an e 阅读全文

摘要： Given an integer array nums, partition it into two (contiguous) subarrays left and right so that: Every element in left is less than or equal to every 阅读全文

摘要： You are given two strings word1 and word2. Merge the strings by adding letters in alternating order, starting with word1. If a string is longer than t 阅读全文

摘要： The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 and 1 respectively. All students stand in a queue. 阅读全文

摘要： You are given the head of a linked list containing unique integer values and an integer array nums that is a subset of the linked list values. Return  阅读全文

摘要： You are given the head of a linked list. Delete the middle node, and return the head of the modified linked list. The middle node of a linked list of 阅读全文

摘要： Given a palindromic string of lowercase English letters palindrome, replace exactly one character with any lowercase English letter so that the result 阅读全文

摘要： Given an m x n picture consisting of black 'B' and white 'W' pixels, return the number of black lonely pixels. A black lonely pixel is a character 'B' 阅读全文

摘要： Given an integer array of even length arr, return true if it is possible to reorder arr such that arr[2 * i + 1] = 2 * arr[2 * i] for every 0 <= i < l 阅读全文

摘要： An integer array original is transformed into a doubled array changed by appending twice the value of every element in original, and then randomly shu 阅读全文

摘要： You are given an array nums of non-negative integers. nums is considered special if there exists a number x such that there are exactly x numbers in n 阅读全文

摘要： Given the array nums consisting of 2n elements in the form [x1,x2,...,xn,y1,y2,...,yn]. Return the array in the form [x1,y1,x2,y2,...,xn,yn]. Example 阅读全文

摘要： You are given a directed graph with n nodes labeled from 0 to n - 1, where each node has exactly one outgoing edge. The graph is represented by a give 阅读全文

摘要： You are given an n x n integer matrix grid. Generate an integer matrix maxLocal of size (n - 2) x (n - 2) such that: maxLocal[i][j] is equal to the la 阅读全文

摘要： Given an m x n board of characters and a list of strings words, return all words on the board. Each word must be constructed from letters of sequentia 阅读全文

摘要： On a single-threaded CPU, we execute a program containing n functions. Each function has a unique ID between 0 and n-1. Function calls are stored in a 阅读全文

摘要： You are given a stream of records about a particular stock. Each record contains a timestamp and the corresponding price of the stock at that timestam 阅读全文

摘要： There are n cars going to the same destination along a one-lane road. The destination is target miles away. You are given two integer array position a 阅读全文

摘要： Given the root of a binary tree, the level of its root is 1, the level of its children is 2, and so on. Return the smallest level x such that the sum 阅读全文