03 2022 档案
摘要：题目 You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed. All houses at this place are
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摘要：题目 Given an m x n grid of characters board and a string word, return true if word exists in the grid. The word can be constructed from letters of sequ
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摘要：题目 Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. Example 1: Input: n = 3 Output: ["((()))","
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摘要：题目 Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate n
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摘要：题目 Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in
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摘要：题目 Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen
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摘要：题目 Given a collection of numbers, nums, that might contain duplicates, return all possible unique permutations in any order. Example 1: Input: nums =
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摘要：题目 Given an integer array nums that may contain duplicates, return all possible subsets (the power set). The solution set must not contain duplicate s
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摘要：题目 Given an integer array nums of unique elements, return all possible subsets (the power set). The solution set must not contain duplicate subsets. R
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摘要：题目 Given a directed acyclic graph (DAG) of n nodes labeled from 0 to n - 1, find all possible paths from node 0 to node n - 1 and return them in any o
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摘要：题目 Given an m x n matrix board containing 'X' and 'O', capture all regions that are 4-directionally surrounded by 'X'. A region is captured by flippin
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摘要：题目 Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path i
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摘要：题目 Given the roots of two binary trees root and subRoot, return true if there is a subtree of root with the same structure and node values of subRoot
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摘要：题目 Given a binary tree struct Node { int val; Node *left; Node *right; Node *next; } Populate each next pointer to point to its next right node. If th
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摘要：题目 There are n cities. Some of them are connected, while some are not. If city a is connected directly with city b, and city b is connected directly w
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摘要：题目 Given an m x n 2D binary grid grid which represents a map of '1's (land) and '0's (water), return the number of islands. An island is surrounded by
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摘要：题目 Given an array of positive integers nums and a positive integer target, return the minimal length of a contiguous subarray [numsl, numsl+1, ..., nu
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摘要：题目 Given an array of integers nums and an integer k, return the number of contiguous subarrays where the product of all the elements in the subarray i
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摘要：题目 Given two strings s and p, return an array of all the start indices of p's anagrams in s. You may return the answer in any order. An Anagram is a w
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摘要：题目 You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i,
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摘要：题目 You are given two lists of closed intervals, firstList and secondList, where firstList[i] = [starti, endi] and secondList[j] = [startj, endj]. Each
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摘要：题目 Given two strings s and t, return true if they are equal when both are typed into empty text editors. '#' means a backspace character. Note that af
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摘要：题目 Given an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums
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摘要：题目 Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Return
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摘要：题目 A peak element is an element that is strictly greater than its neighbors. Given an integer array nums, find a peak element, and return its index. I
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摘要：题目 Suppose an array of length n sorted in ascending order is rotated between 1 and n times. For example, the array nums = [0,1,2,4,5,6,7] might become
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摘要：题目 Write an efficient algorithm that searches for a value target in an m x n integer matrix matrix. This matrix has the following properties: Integers
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摘要：题目 There is an integer array nums sorted in ascending order (with distinct values). Prior to being passed to your function, nums is possibly rotated a
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摘要：题目 Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value. If target is not fou
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摘要：题目 Given a non-empty array of integers nums, every element appears twice except for one. Find that single one. You must implement a solution with a li
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摘要：题目 Reverse bits of a given 32 bits unsigned integer. Note: Note that in some languages, such as Java, there is no unsigned integer type. In this case,
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摘要：题目 Write a function that takes an unsigned integer and returns the number of '1' bits it has (also known as the Hamming weight). Note: Note that in so
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摘要：题目 Given an integer n, return true if it is a power of two. Otherwise, return false. An integer n is a power of two, if there exists an integer x such
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摘要：题目 Given a triangle array, return the minimum path sum from top to bottom. For each step, you may move to an adjacent number of the row below. More fo
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摘要：题目 You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping
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摘要：题目 You are climbing a staircase. It takes n steps to reach the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cli
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摘要：题目 Given a string s, you can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible
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摘要：题目 Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order. Example 1: Input: nums = [1
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摘要：题目 Given two integers n and k, return all possible combinations of k numbers out of the range [1, n]. You may return the answer in any order. Example
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摘要：题目 Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: Input: head = [1,2,3,4,5] Output: [5,4,3,2,1] Ex
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摘要：题目 You are given a perfect binary tree where all leaves are on the same level, and every parent has two children. The binary tree has the following de
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摘要：## 简介 ansible回调插件（callback plugins）允许为事件添加一些额外响应。这里的事件包括了执行任务（task）的结果，例如（ok、failed、unreachable、skipped），以及执行剧本（playbook）的过程（start、hosts_matched、task_
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摘要：题目 You are given the heads of two sorted linked lists list1 and list2. Merge the two lists in a one sorted list. The list should be made by splicing t
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摘要：题目 You are given an m x n grid where each cell can have one of three values: 0 representing an empty cell, 1 representing a fresh orange, or 2 represe
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摘要：题目 Given an m x n binary matrix mat, return the distance of the nearest 0 for each cell. The distance between two adjacent cells is 1. Example 1: Inpu
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摘要：题目 You are given two binary trees root1 and root2. Imagine that when you put one of them to cover the other, some nodes of the two trees are overlappe
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摘要：题目 You are given an m x n binary matrix grid. An island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You
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