45. Jump Game II

Problem You are given a 0-indexed array of integers nums of length n. You are initially positioned at nums[0]. Each element n...

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2948. Make Lexicographically Smallest Array by Swapping Elements

Problem You are given a 0-indexed array of positive integers nums and a positive integer limit. In one operation, you can cho...

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1267. Count Servers that Communicate

Problem You are given a map of a server center, represented as a m * n integer matrix grid, where 1 means that on that cell t...

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1561. Maximum Number of Coins You Can Get

Problem There are 3n piles of coins of varying size, you and your friends will take piles of coins as follows: In each step,...

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2017. Grid Game

Problem You are given a 0-indexed 2D array grid of size 2 x n, where grid[r][c] represents the number of points at position (...

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2661. First Completely Painted Row or Column

Problem You are given a 0-indexed integer array arr, and an m x n integer matrix mat. arr and mat both contain all the intege...

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2266. Count Number of Texts

Problem Alice is texting Bob using her phone. The mapping of digits to letters is shown in the figure below. In order to add...

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3097. Shortest Subarray With OR at Least K II

Problem 跟 3095. Shortest Subarray With OR at Least K I 一模一样,只是问题规模更大。 https://leetcode.cn/problems/shortest-subarray-with-or-...

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2683. Neighboring Bitwise XOR

Problem A 0-indexed array derived with length n is derived by computing the bitwise XOR (⊕) of adjacent values in a binary ar...

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2425. Bitwise XOR of All Pairings

Problem You are given two 0-indexed arrays, nums1 and nums2, consisting of non-negative integers. There exists another array,...

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2429. Minimize XOR

Problem Given two positive integers num1 and num2, find the positive integer x such that: x has the same number of set bits ...

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3066. Minimum Operations to Exceed Threshold Value II

Problem You are given a 0-indexed integer array nums, and an integer k. In one operation, you will: Take the two smallest in...

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2657. Find the Prefix Common Array of Two Arrays

Problem You are given two 0-indexed integer permutations A and B of length n. A prefix common array of A and B is an array C ...

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3223. Minimum Length of String After Operations

Problem You are given a string s. You can perform the following process on s any number of times: Choose an index i in the s...

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2116. Check if a Parentheses String Can Be Valid

Problem A parentheses string is a non-empty string consisting only of '(' and ')'. It is valid if any of the following condit...

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2275. Largest Combination With Bitwise AND Greater Than Zero

Problem The bitwise AND of an array nums is the bitwise AND of all integers in nums. For example, for nums = [1, 5, 3], the ...

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1400. Construct K Palindrome Strings

Problem Given a string s and an integer k, return true if you can use all the characters in s to construct k palindrome strin...

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916. Word Subsets

Problem You are given two string arrays words1 and words2. A string b is a subset of string a if every letter in b occurs in ...

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3297. Count Substrings That Can Be Rearranged to Contain a String I

Problem You are given two strings word1 and word2. A string x is called valid if x can be rearranged to have word2 as a prefi...

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1186. Maximum Subarray Sum with One Deletion

Problem Given an array of integers, return the maximum sum for a non-empty subarray (contiguous elements) with at most one el...

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1769. Minimum Number of Operations to Move All Balls to Each Box

Problem You have n boxes. You are given a binary string boxes of length n, where boxes[i] is '0' if the iᵗʰ box is empty, and...

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2274. Maximum Consecutive Floors Without Special Floors

Problem Alice manages a company and has rented some floors of a building as office space. Alice has decided some of these flo...

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2381. Shifting Letters II

Problem You are given a string s of lowercase English letters and a 2D integer array shifts where shifts[i] = [startᵢ, endᵢ, ...

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848. Shifting Letters

Problem You are given a string s of lowercase English letters and an integer array shifts of the same length. Call the shift(...

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2241. Design an ATM Machine

Problem There is an ATM machine that stores banknotes of 5 denominations: 20, 50, 100, 200, and 500 dollars. Initially the AT...

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1930. Unique Length-3 Palindromic Subsequences

Problem Given a string s, return the number of unique palindromes of length three that are a subsequence of s. Note that even...

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2270. Number of Ways to Split Array

Problem You are given a 0-indexed integer array nums of length n. nums contains a valid split at index i if the following are...

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816. Ambiguous Coordinates

Problem We had some 2-dimensional coordinates, like "(1, 3)" or "(2, 0.5)". Then, we removed all commas, ...

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436. Find Right Interval

Problem You are given an array of intervals, where intervals[i] = [startᵢ, endᵢ] and each startᵢ is unique. The right interva...

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731. My Calendar II

Problem You are implementing a program to use as your calendar. We can add a new event if adding the event will not cause a t...

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581. Shortest Unsorted Continuous Subarray

Problem Given an integer array nums, you need to find one continuous subarray such that if you only sort this subarray in non...

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2559. Count Vowel Strings in Ranges

Problem You are given a 0-indexed array of strings words and a 2D array of integers queries. Each query queries[i] = [lᵢ, rᵢ]...

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