05 2018 档案
摘要：［抄题］： In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want
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摘要：［抄题］： Given an array which consists of non-negative integers and an integer m, you can split the array into m non-empty continuous subarrays. Write an
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摘要：［抄题］： There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-empt
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摘要：［抄题］： Given an array of words and a width maxWidth, format the text such that each line has exactly maxWidth characters and is fully (left and right)
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摘要：［抄题］： Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*'. The matching should cover the ent
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摘要：［抄题］： Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string ma
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摘要：［抄题］： Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffe
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摘要：［抄题］： Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Example 2: Exa
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摘要：［抄题］： Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing only 1's and return its area. Example: [暴力解法]： 时间分析： 空间分
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摘要：［抄题］： Given a grid where each entry is only 0 or 1, find the number of corner rectangles. A corner rectangle is 4 distinct 1s on the grid that form an
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摘要：［抄题］： We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements are in
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摘要：［抄题］： 求挖掉一些区域后，能允许出现的最大十字架 In a 2D grid from (0, 0) to (N-1, N-1), every cell contains a 1, except those cells in the given list mines which are 0. Wh
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摘要：［抄题］： Given an undirected graph, return true if and only if it is bipartite. Recall that a graph is bipartite if we can split it's set of nodes into t
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摘要：［抄题］： Some people will make friend requests. The list of their ages is given and ages[i] is the age of the ith person. Person A will NOT friend reques
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摘要：［抄题］： Given a list of non-negative numbers and a target integer k, write a function to check if the array has a continuous subarray of size at least 2
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摘要：［抄题］： There is a brick wall in front of you. The wall is rectangular and has several rows of bricks. The bricks have the same height but different wid
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摘要：［抄题］： Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Example 2: [暴力解法]： 时间分析： 空间分析： [
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摘要：［抄题］： Given an array of integers with possible duplicates, randomly output the index of a given target number. You can assume that the given target nu
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摘要：［抄题］： Given an unsorted array of integers, find the number of longest increasing subsequence. Example 1: Example 2: [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空
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摘要：［抄题］： The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Now your job is to find the
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摘要：［抄题］： Given a non-negative integer, you could swap two digits at most once to get the maximum valued number. Return the maximum valued number you coul
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摘要：［抄题］： You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you should ch
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摘要：［抄题］： Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each
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摘要：［抄题］： Your are given an array of integers prices, for which the i-th element is the price of a given stock on day i; and a non-negative integer fee re
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摘要：［抄题］： Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer t
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摘要：［抄题］： Given an array nums and a target value k, find the maximum length of a subarray that sums to k. If there isn't one, return 0 instead. Note:The s
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摘要：［抄题］： Given an array of citations in ascending order (each citation is a non-negative integer) of a researcher, write a function to compute the resear
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摘要：［抄题］： Given an array of citations (each citation is a non-negative integer) of a researcher, write a function to compute the researcher's h-index. Acc
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摘要：［抄题］： Given a binary tree Populate each next pointer to point to its next right node. If there is no next right node, the next pointer should be set t
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摘要：［抄题］： Design a data structure that supports all following operations in average O(1) time. Note: Duplicate elements are allowed. Example: [暴力解法]： 时间分析
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摘要：［抄题］： Design a data structure that supports all following operations in average O(1) time. Example: [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩输出条件］： ［
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摘要：［抄题］： Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" [暴力解法]： 时间
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摘要：［抄题］： Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), find the minimum number of conferenc
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摘要：［抄题］： A message containing letters from A-Z is being encoded to numbers using the following mapping: Given a non-empty string containing only digits,
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摘要：［抄题］： Given a char array representing tasks CPU need to do. It contains capital letters A to Z where different letters represent different tasks.Tasks
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摘要：［抄题］： Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list -- whose elements may also be
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摘要：［抄题］： Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes
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摘要：［抄题］： Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cell, where
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摘要：［抄题］： Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets.
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摘要：［抄题］： Given an array of strings, group anagrams together. Example: [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩输出条件］： ［奇葩corner case］： ［思维问题］： 不知道k-v怎么存
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摘要：［抄题］： mplement pow(x, n), which calculates x raised to the power n (xn). Example 1: Example 2: Example 3: [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩输出
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摘要：［抄题］： Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums e
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摘要：［抄题］： Given an input string (s) and a pattern (p), implement regular expression matching with support for '.' and '*'. The matching should cover the e
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摘要：［抄题］： TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such a
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摘要：［抄题］： Reverse bits of a given 32 bits unsigned integer. Example: [暴力解法]： 时间分析： 空间分析： [优化后]： 时间分析： 空间分析： ［奇葩输出条件］： ［奇葩corner case］： ［思维问题］： ［一句话思路］： 32
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摘要：［抄题］： Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: Example
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摘要：［抄题］： Given an m * n matrix M initialized with all 0's and several update operations. Operations are represented by a 2D array, and each operation is
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摘要：［抄题］： We define the Perfect Number is a positive integer that is equal to the sum of all its positive divisors except itself. Now, given an integer n,
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摘要：［抄题］： Given a non-negative integer c, your task is to decide whether there're two integers a and b such that a2 + b2 = c. Example 1: Example 2: [暴力解法]
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摘要：［抄题］： Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is increment
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摘要：［抄题］： A self-dividing number is a number that is divisible by every digit it contains. For example, 128 is a self-dividing number because 128 % 1 == 0
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摘要：［抄题］： Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: Example 1: Example 2: Example 3: [暴力解法
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摘要：［抄题］： Given a column title as appear in an Excel sheet, return its corresponding column number. For example: Example 1: Example 2: Example 3: [暴力解法]：
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摘要：［抄题］： Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is
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摘要：［抄题］： 将一个整数中的数字进行颠倒，当颠倒后的整数溢出时，返回 0 (标记为 32 位整数)。 将一个整数中的数字进行颠倒，当颠倒后的整数溢出时，返回 0 (标记为 32 位整数)。 将一个整数中的数字进行颠倒，当颠倒后的整数溢出时，返回 0 (标记为 32 位整数)。 样例 给定 x = 12
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摘要：［抄题］： Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Example 2: Examp
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