CNoodle

摘要： On an alphabet board, we start at position (0, 0), corresponding to character board[0][0]. Here, board = ["abcde", "fghij", "klmno", "pqrst", "uvwxy", 阅读全文

摘要： We are given hours, a list of the number of hours worked per day for a given employee. A day is considered to be a tiring day if and only if the numbe 阅读全文

摘要： There is an authentication system that works with authentication tokens. For each session, the user will receive a new authentication token that will 阅读全文

摘要： Given a list of folders folder, return the folders after removing all sub-folders in those folders. You may return the answer in any order. If a folde 阅读全文

摘要： LeetCode company workers use key-cards to unlock office doors. Each time a worker uses their key-card, the security system saves the worker's name and 阅读全文

摘要： You are given two string arrays, queries and dictionary. All words in each array comprise of lowercase English letters and have the same length. In on 阅读全文

摘要： You are given the root of a full binary tree with the following properties: Leaf nodes have either the value 0 or 1, where 0 represents False and 1 re 阅读全文

摘要： Two players play a turn based game on a binary tree. We are given the root of this binary tree, and the number of nodes n in the tree. n is odd, and e 阅读全文

摘要： You are given the strings key and message, which represent a cipher key and a secret message, respectively. The steps to decode message are as follows 阅读全文

摘要： A transformation sequence from word beginWord to word endWord using a dictionary wordList is a sequence of words beginWord -> s1 -> s2 -> ... -> sk su 阅读全文

摘要： You are the manager of a basketball team. For the upcoming tournament, you want to choose the team with the highest overall score. The score of the te 阅读全文

摘要： A square matrix is said to be an X-Matrix if both of the following conditions hold: All the elements in the diagonals of the matrix are non-zero. All 阅读全文

摘要： You are given an integer array nums. You can choose exactly one index (0-indexed) and remove the element. Notice that the index of the elements may ch 阅读全文

摘要： Given an array of strings words (without duplicates), return all the concatenated words in the given list of words. A concatenated word is defined as 阅读全文

摘要： You are given an n x n integer matrix board where the cells are labeled from 1 to n2 in a Boustrophedon style starting from the bottom left of the boa 阅读全文

摘要： You are given two strings of the same length s1 and s2 and a string baseStr. We say s1[i] and s2[i] are equivalent characters. For example, if s1 = "a 阅读全文

摘要： There are n people in a social group labeled from 0 to n - 1. You are given an array logs where logs[i] = [timestampi, xi, yi] indicates that xi and y 阅读全文

摘要： You are given an array points where points[i] = [xi, yi] is the coordinates of the ith point on a 2D plane. Multiple points can have the same coordina 阅读全文

摘要： You are given a 0-indexed 2D integer array brackets where brackets[i] = [upperi, percenti] means that the ith tax bracket has an upper bound of upperi 阅读全文

摘要： In this problem, a tree is an undirected graph that is connected and has no cycles. You are given a graph that started as a tree with n nodes labeled 阅读全文