LeetCode 30xx
LeetCode problems 3000–3099
LeetCode 30xx
| # | Problem | Difficulty | Time | Notes |
|---|---|---|---|---|
| 3000 | Maximum Area of Longest Diagonal Rectangle | 🟢 Easy | 57s | The input consists of a 2D array dimensions, where each element rep… |
| 3001 | Minimum Moves to Capture The Queen | 🟡 Medium | 1m 11s | This problem gives us the positions of three chess pieces on a stan… |
| 3002 | Maximum Size of a Set After Removals | 🟡 Medium | 57s | The problem is asking us to maximize the number of unique elements … |
| 3003 | Maximize the Number of Partitions After Operations | 🔴 Hard | 1m 9s | The problem asks us to take a string s and an integer k and compute… |
| 3004 | Maximum Subtree of the Same Color | 🟡 Medium | 2m 28s | We are given a rooted tree with n nodes, where node 0 is the root. … |
| 3005 | Count Elements With Maximum Frequency | 🟢 Easy | 1m 9s | The problem gives us an integer array nums, where every value is po… |
| 3006 | Find Beautiful Indices in the Given Array I | 🟡 Medium | 1m 16s | The problem gives us a string s and two smaller strings, a and b. W… |
| 3007 | Maximum Number That Sum of the Prices Is Less Than or Equal to K | 🟡 Medium | 56s | The problem asks us to find the largest integer num such that the a… |
| 3008 | Find Beautiful Indices in the Given Array II | 🔴 Hard | 1m 31s | This problem asks us to find every starting index where the substri… |
| 3009 | Maximum Number of Intersections on the Chart | 🔴 Hard | 1m 15s | I can provide the full guide, but I want to avoid giving you a tech… |
| 3010 | Divide an Array Into Subarrays With Minimum Cost I | 🟢 Easy | 1m 18s | The problem asks us to split a given array nums into exactly three … |
| 3011 | Find if Array Can Be Sorted | 🟡 Medium | 1m 29s | Here’s the complete, detailed technical solution guide for LeetCode… |
| 3012 | Minimize Length of Array Using Operations | 🟡 Medium | 1m 12s | The problem gives us a 0-indexed array of positive integers and ask… |
| 3013 | Divide an Array Into Subarrays With Minimum Cost II | 🔴 Hard | 2m 57s | The problem asks us to divide a given array nums into k contiguous … |
| 3014 | Minimum Number of Pushes to Type Word I | 🟢 Easy | 2m 50s | We are given a word consisting of distinct lowercase English letter… |
| 3015 | Count the Number of Houses at a Certain Distance I | 🟡 Medium | 2m 45s | Here is a complete technical solution guide for LeetCode 3015 - Cou… |
| 3016 | Minimum Number of Pushes to Type Word II | 🟡 Medium | 2m | This problem asks us to redesign a telephone keypad so that typing … |
| 3017 | Count the Number of Houses at a Certain Distance II | 🔴 Hard | 1m 51s | We are given a graph of n houses arranged in a straight line. Norma… |
| 3018 | Maximum Number of Removal Queries That Can Be Processed I | 🔴 Hard | 1m 29s | The problem asks us to process a sequence of removal queries on an … |
| 3019 | Number of Changing Keys | 🟢 Easy | 1m 6s | The problem asks us to determine how many times a user changes keys… |
| 3020 | Find the Maximum Number of Elements in Subset | 🟡 Medium | 2m 11s | The problem gives us an array of positive integers and asks us to c… |
| 3021 | Alice and Bob Playing Flower Game | 🟡 Medium | 1m 5s | The game consists of two flower lanes containing x and y flowers re… |
| 3022 | Minimize OR of Remaining Elements Using Operations | 🔴 Hard | 56s | The problem presents an array nums of non-negative integers and an … |
| 3023 | Find Pattern in Infinite Stream I | 🟡 Medium | 1m | The problem asks us to detect the first occurrence of a given binar… |
| 3024 | Type of Triangle | 🟢 Easy | 1m 8s | The problem gives an integer array nums of length 3, where each val… |
| 3025 | Find the Number of Ways to Place People I | 🟡 Medium | 1m 50s | The problem gives us a list of distinct points on a 2D plane. Each … |
| 3026 | Maximum Good Subarray Sum | 🟡 Medium | 1m 21s | The problem asks us to find the maximum possible sum of a contiguou… |
| 3027 | Find the Number of Ways to Place People II | 🔴 Hard | 1m | The problem asks us to determine how many valid placements of Alice… |
| 3028 | Ant on the Boundary | 🟢 Easy | 3m 23s | The problem describes an ant moving along a one-dimensional infinit… |
| 3029 | Minimum Time to Revert Word to Initial State I | 🟡 Medium | 1m 29s | The problem gives us a string word and an integer k. Every second, … |
| 3030 | Find the Grid of Region Average | 🟡 Medium | 1m 44s | The problem gives us a grayscale image represented as an m x n matr… |
| 3031 | Minimum Time to Revert Word to Initial State II | 🔴 Hard | 1m 27s | The problem requires simulating a repetitive transformation on a st… |
| 3032 | Count Numbers With Unique Digits II | 🟢 Easy | 1m 29s | The problem asks us to count how many integers in the inclusive ran… |
| 3033 | Modify the Matrix | 🟢 Easy | 1m 22s | The problem is asking us to take a given m x n matrix, potentially … |
| 3034 | Number of Subarrays That Match a Pattern I | 🟡 Medium | 1m 36s | The problem asks us to count how many contiguous subarrays of nums … |
| 3035 | Maximum Palindromes After Operations | 🟡 Medium | 1m 43s | This problem gives us an array of strings, words, and allows us to … |
| 3036 | Number of Subarrays That Match a Pattern II | 🔴 Hard | 1m 13s | This guide will be very long, likely exceeding a single message cle… |
| 3037 | Find Pattern in Infinite Stream II | 🔴 Hard | 1m 16s | The problem requires us to detect the first occurrence of a binary … |
| 3038 | Maximum Number of Operations With the Same Score I | 🟢 Easy | 1m 4s | The problem asks us to repeatedly perform an operation on an intege… |
| 3039 | Apply Operations to Make String Empty | 🟡 Medium | 1m 9s | The problem gives us a lowercase string s and defines a repeated op… |
| 3040 | Maximum Number of Operations With the Same Score II | 🟡 Medium | 52s | This problem asks us to determine the maximum number of operations … |
| 3041 | Maximize Consecutive Elements in an Array After Modification | 🔴 Hard | 46s | The problem is asking us to maximize the number of consecutive inte… |
| 3042 | Count Prefix and Suffix Pairs I | 🟢 Easy | 1m 2s | The problem gives us an array of strings called words. For every pa… |
| 3043 | Find the Length of the Longest Common Prefix | 🟡 Medium | 1m 24s | We are given two arrays of positive integers, arr1 and arr2. The ta… |
| 3044 | Most Frequent Prime | 🟡 Medium | 59s | The problem asks us to traverse a m x n integer matrix and generate… |
| 3045 | Count Prefix and Suffix Pairs II | 🔴 Hard | 55s | The problem asks us to count the number of ordered pairs (i, j) in … |
| 3046 | Split the Array | 🟢 Easy | 1m 6s | The problem asks us to determine if an even-length array can be spl… |
| 3047 | Find the Largest Area of Square Inside Two Rectangles | 🟡 Medium | 1m 3s | The problem asks us to find the largest square that can fit inside … |
| 3048 | Earliest Second to Mark Indices I | 🟡 Medium | 1m 21s | We are given two 1-indexed arrays: - nums, where nums[i] represents… |
| 3049 | Earliest Second to Mark Indices II | 🔴 Hard | 1m 29s | We are given two arrays: - nums, where nums[i] represents the initi… |
| 3050 | Pizza Toppings Cost Analysis | 🟡 Medium | 42s | This problem asks us to compute the total cost of all possible thre… |
| 3051 | Find Candidates for Data Scientist Position | 🟢 Easy | 48s | You included two different LeetCode problems with conflicting templ… |
| 3052 | Maximize Items | 🔴 Hard | 1m 49s | The problem requires determining how many items can be stored in a … |
| 3053 | Classifying Triangles by Lengths | 🟢 Easy | 1m 21s | The problem requires classifying triangles based on the lengths of … |
| 3054 | Binary Tree Nodes | 🟡 Medium | 1m 2s | This problem asks us to classify nodes in a binary tree based on th… |
| 3055 | Top Percentile Fraud | 🟡 Medium | 47s | This problem asks us to identify the top 5 percentile of insurance … |
| 3056 | Snaps Analysis | 🟡 Medium | 51s | The problem requires calculating the percentage of time each age gr… |
| 3057 | Employees Project Allocation | 🔴 Hard | 1m 24s | This problem asks us to identify employees whose assigned project w… |
| 3058 | Friends With No Mutual Friends | 🟡 Medium | 1m 19s | The Friends table represents an undirected friendship graph. Each r… |
| 3059 | Find All Unique Email Domains | 🟢 Easy | 1m 15s | This problem asks us to analyze email addresses stored in a databas… |
| 3060 | User Activities within Time Bounds | 🔴 Hard | 1m 25s | The Sessions table stores information about user activity sessions … |
| 3061 | Calculate Trapping Rain Water | 🔴 Hard | 1m 26s | This problem asks us to compute how much rainwater can be trapped b… |
| 3062 | Winner of the Linked List Game | 🟢 Easy | 1m 6s | The problem gives us the head of a singly linked list whose length … |
| 3063 | Linked List Frequency | 🟢 Easy | 1m | This problem asks us to analyze a singly-linked list of integers an… |
| 3064 | Guess the Number Using Bitwise Questions I | 🟡 Medium | 48s | The problem presents an interactive scenario where there is a hidde… |
| 3065 | Minimum Operations to Exceed Threshold Value I | 🟢 Easy | 41s | The problem asks us to find the minimum number of operations needed… |
| 3066 | Minimum Operations to Exceed Threshold Value II | 🟡 Medium | 42s | This problem asks us to repeatedly combine the two smallest element… |
| 3067 | Count Pairs of Connectable Servers in a Weighted Tree Network | 🟡 Medium | 1m 6s | The problem gives us a weighted tree representing servers connected… |
| 3068 | Find the Maximum Sum of Node Values | 🔴 Hard | 1m 10s | You are given a tree with n nodes. Every node has a value stored in… |
| 3069 | Distribute Elements Into Two Arrays I | 🟢 Easy | 52s | The problem is asking us to simulate a process where we distribute … |
| 3070 | Count Submatrices with Top-Left Element and Sum Less Than k | 🟡 Medium | 1m 15s | The problem gives us a 2D integer matrix called grid and an integer… |
| 3071 | Minimum Operations to Write the Letter Y on a Grid | 🟡 Medium | 1m 4s | The problem asks us to determine the minimum number of operations t… |
| 3072 | Distribute Elements Into Two Arrays II | 🔴 Hard | 55s | This problem requires simulating the distribution of elements from … |
| 3073 | Maximum Increasing Triplet Value | 🟡 Medium | 1m 17s | We are given an integer array nums, and we must find three indices … |
| 3074 | Apple Redistribution into Boxes | 🟢 Easy | 42s | The problem asks us to redistribute a collection of apple packs int… |
| 3075 | Maximize Happiness of Selected Children | 🟡 Medium | 51s | The problem gives us an array happiness representing the happiness … |
| 3076 | Shortest Uncommon Substring in an Array | 🟡 Medium | 53s | The problem asks us to find, for each string in a given array, the … |
| 3077 | Maximum Strength of K Disjoint Subarrays | 🔴 Hard | 1m 10s | The problem is asking us to select exactly k disjoint subarrays fro… |
| 3078 | Match Alphanumerical Pattern in Matrix I | 🟡 Medium | 1m 35s | This problem asks us to search for a rectangular submatrix inside a… |
| 3079 | Find the Sum of Encrypted Integers | 🟢 Easy | 49s | The problem provides an array of positive integers nums and asks us… |
| 3080 | Mark Elements on Array by Performing Queries | 🟡 Medium | 38s | Here’s a fully detailed technical solution guide for LeetCode 3080 … |
| 3081 | Replace Question Marks in String to Minimize Its Value | 🟡 Medium | 1m 11s | The problem gives us a string s containing lowercase English letter… |
| 3082 | Find the Sum of the Power of All Subsequences | 🔴 Hard | 1m 15s | You are given an array nums and an integer k. For every subsequence… |
| 3083 | Existence of a Substring in a String and Its Reverse | 🟢 Easy | 57s | This is a Type B, “Prove that” problem. The statement to prove is: … |
| 3084 | Count Substrings Starting and Ending with Given Character | 🟡 Medium | 1m 10s | The problem gives us a string s and a character c. We must count ho… |
| 3085 | Minimum Deletions to Make String K-Special | 🟡 Medium | 57s | The problem asks us to transform a given string word into a k-speci… |
| 3086 | Minimum Moves to Pick K Ones | 🔴 Hard | 1m 3s | The reviewer identified a sign error in the swap argument, so the f… |
| 3087 | Find Trending Hashtags | 🟡 Medium | 1m 10s | The problem asks us to find the top 3 trending hashtags from a tabl… |
| 3088 | Make String Anti-palindrome | 🔴 Hard | 1m 25s | We are given a string s of even length, and we may swap any two cha… |
| 3089 | Find Bursty Behavior | 🟡 Medium | 53s | The problem asks us to identify users who demonstrate "bursty behav… |
| 3090 | Maximum Length Substring With Two Occurrences | 🟢 Easy | 58s | The problem is asking for the maximum length of a substring in a gi… |
| 3091 | Apply Operations to Make Sum of Array Greater Than or Equal to k | 🟡 Medium | 1m 15s | The problem gives us a single positive integer k. We start with an … |
| 3092 | Most Frequent IDs | 🟡 Medium | 50s | The problem asks us to maintain a collection of IDs that is updated… |
| 3093 | Longest Common Suffix Queries | 🔴 Hard | 1m 22s | The problem asks us to process a set of suffix matching queries eff… |
| 3094 | Guess the Number Using Bitwise Questions II | 🟡 Medium | 2m 24s | Before I write the full guide, I want to confirm one detail: for Le… |
| 3095 | Shortest Subarray With OR at Least K I | 🟢 Easy | 1m 7s | The problem asks us to find the shortest subarray within a given ar… |
| 3096 | Minimum Levels to Gain More Points | 🟡 Medium | 1m 1s | This problem is asking us to determine the minimum number of levels… |
| 3097 | Shortest Subarray With OR at Least K II | 🟡 Medium | 1m 28s | This problem asks us to find the smallest non-empty contiguous suba… |
| 3098 | Find the Sum of Subsequence Powers | 🔴 Hard | 54s | The problem asks us to compute the sum of powers of all subsequence… |
| 3099 | Harshad Number | 🟢 Easy | 56s | The problem asks us to determine whether a given integer is a Harsh… |