LeetCode 34xx
LeetCode problems 3400–3499
LeetCode 34xx
| # | Problem | Difficulty | Time | Notes |
|---|---|---|---|---|
| 3400 | Maximum Number of Matching Indices After Right Shifts | 🟡 Medium | 1m 13s | The problem gives us two arrays, nums1 and nums2, both of the same … |
| 3401 | Find Circular Gift Exchange Chains | 🔴 Hard | 35s | Here’s a full technical solution guide following your requested for… |
| 3402 | Minimum Operations to Make Columns Strictly Increasing | 🟢 Easy | 46s | The problem gives us a matrix grid of size m x n containing non-neg… |
| 3403 | Find the Lexicographically Largest String From the Box I | 🟡 Medium | 2m 34s | We are given a string word of length n and an integer numFriends. I… |
| 3404 | Count Special Subsequences | 🟡 Medium | 1m 31s | This problem asks us to count the number of special subsequences of… |
| 3405 | Count the Number of Arrays with K Matching Adjacent Elements | 🔴 Hard | 3m 16s | This problem asks us to count how many arrays of length n can be fo… |
| 3406 | Find the Lexicographically Largest String From the Box II | 🔴 Hard | 2m 10s | We are given a string word of length n and an integer numFriends. I… |
| 3407 | Substring Matching Pattern | 🟢 Easy | 2m 39s | The problem gives us two strings: - s, the source string. - p, a pa… |
| 3408 | Design Task Manager | 🟡 Medium | 2m 21s | This problem asks us to design a data structure that maintains a co… |
| 3409 | Longest Subsequence With Decreasing Adjacent Difference | 🟡 Medium | 2m 41s | We are given an array nums, and we want to choose a subsequence fro… |
| 3410 | Maximize Subarray Sum After Removing All Occurrences of One Element | 🔴 Hard | 1m 33s | We are given an integer array nums. We may perform at most one oper… |
| 3411 | Maximum Subarray With Equal Products | 🟢 Easy | 2m 4s | We are given an array nums consisting of positive integers. For any… |
| 3412 | Find Mirror Score of a String | 🟡 Medium | 1m 21s | We are given a lowercase English string s. Every letter has a uniqu… |
| 3413 | Maximum Coins From K Consecutive Bags | 🟡 Medium | 2m 15s | We are given several non-overlapping segments on a number line. Eac… |
| 3414 | Maximum Score of Non-overlapping Intervals | 🔴 Hard | 1m 6s | This problem combines weighted interval scheduling with an addition… |
| 3415 | Find Products with Three Consecutive Digits | 🟢 Easy | 1m | This is a SQL database problem involving pattern matching on string… |
| 3416 | Subsequences with a Unique Middle Mode II | 🔴 Hard | 1m 33s | We are given an array nums, and we must count how many subsequences… |
| 3417 | Zigzag Grid Traversal With Skip | 🟢 Easy | 1m 23s | This problem asks us to traverse a two-dimensional grid in a zigzag… |
| 3418 | Maximum Amount of Money Robot Can Earn | 🟡 Medium | 1m 15s | We are given an m x n grid where each cell contains either a positi… |
| 3419 | Minimize the Maximum Edge Weight of Graph | 🟡 Medium | 49s | The problem is asking us to manipulate a directed weighted graph in… |
| 3420 | Count Non-Decreasing Subarrays After K Operations | 🔴 Hard | 1m 24s | You are given an array nums and a budget of at most k increment ope… |
| 3421 | Find Students Who Improved | 🟡 Medium | 3m 35s | This This ensures that performance in one subject never affects ano… |
| 3422 | Minimum Operations to Make Subarray Elements Equal | 🟡 Medium | 2m 11s | We are given an array nums and an integer k. In a single operation,… |
| 3423 | Maximum Difference Between Adjacent Elements in a Circular Array | 🟢 Easy | 1m 30s | This problem gives us an integer array nums and asks us to find the… |
| 3424 | Minimum Cost to Make Arrays Identical | 🟡 Medium | 49s | The problem asks us to transform one integer array arr into another… |
| 3425 | Longest Special Path | 🔴 Hard | 51s | This problem provides an undirected tree rooted at node 0 with n no… |
| 3427 | Sum of Variable Length Subarrays | 🟢 Easy | 40s | The problem provides an integer array nums of length n. For each in… |
| 3428 | Maximum and Minimum Sums of at Most Size K Subsequences | 🟡 Medium | 1m 11s | We are given an array nums and an integer k. For every subsequence … |
| 3429 | Paint House IV | 🟡 Medium | 46s | This problem is asking us to paint n houses arranged in a line with… |
| 3430 | Maximum and Minimum Sums of at Most Size K Subarrays | 🔴 Hard | 4m 29s | We are remains efficient even at the maximum constraint limit. |
| 3431 | Minimum Unlocked Indices to Sort Nums | 🟡 Medium | 3m 37s | We are given two arrays of equal both required ranges are empty and… |
| 3432 | Count Partitions with Even Sum Difference | 🟢 Easy | 2m 43s | The problem gives us an integer array nums and asks us to count how… |
| 3433 | Count Mentions Per User | 🟡 Medium | 1m 28s | This problem asks us to simulate a sequence of user activity events… |
| 3435 | Frequencies of Shortest Supersequences | 🔴 Hard | 46s | The problem asks us to find all shortest common supersequences (SCS… |
| 3436 | Find Valid Emails | 🟢 Easy | 42s | The problem requires us to identify valid email addresses from a Us… |
| 3437 | Permutations III | 🟡 Medium | 1m 13s | We are given a single integer n, and we need to generate all permut… |
| 3438 | Find Valid Pair of Adjacent Digits in String | 🟢 Easy | 3m 23s | The problem gives us a string s containing only digits from '1' to … |
| 3439 | Reschedule Meetings for Maximum Free Time I | 🟡 Medium | 55s | We are given an event that runs from time 0 to eventTime. Inside th… |
| 3440 | Reschedule Meetings for Maximum Free Time II | 🟡 Medium | 1m 41s | We are given an event that lasts from time 0 to eventTime. Inside t… |
| 3441 | Minimum Cost Good Caption | 🔴 Hard | 1m 23s | We are given a lowercase string caption. We may repeatedly change a… |
| 3442 | Maximum Difference Between Even and Odd Frequency I | 🟢 Easy | 56s | This problem requires analyzing the frequency of characters in a gi… |
| 3444 | Minimum Increments for Target Multiples in an Array | 🔴 Hard | 1m 36s | We are given two arrays: - nums, the array whose elements we are al… |
| 3445 | Maximum Difference Between Even and Odd Frequency II | 🔴 Hard | 1m 54s | We are given a string s consisting only of digits '0' through '4', … |
| 3446 | Sort Matrix by Diagonals | 🟡 Medium | 54s | We are given an n x n square matrix grid. Every cell belongs to exa… |
| 3447 | Assign Elements to Groups with Constraints | 🟡 Medium | 50s | The problem requires assigning elements from one array, elements, t… |
| 3448 | Count Substrings Divisible By Last Digit | 🔴 Hard | 1m 26s | We are given a string s consisting only of decimal digits. Every su… |
| 3449 | Maximize the Minimum Game Score | 🔴 Hard | 1m 26s | You are given an array points, where points[i] is the amount added … |
| 3450 | Maximum Students on a Single Bench | 🟢 Easy | 46s | The problem provides a list of student-seat assignments, where each… |
| 3451 | Find Invalid IP Addresses | 🔴 Hard | 1m 5s | This is a SQL database problem where we must identify all invalid I… |
| 3452 | Sum of Good Numbers | 🟢 Easy | 1m 15s | This problem gives us an integer array nums and an integer k. For e… |
| 3453 | Separate Squares I | 🟡 Medium | 2m 1s | We are given a collection of axis-aligned squares. Each square is r… |
| 3454 | Separate Squares II | 🔴 Hard | 1m 53s | This problem asks us to find the smallest horizontal line y = H tha… |
| 3455 | Shortest Matching Substring | 🔴 Hard | 1m 4s | This problem asks us to find the length of the shortest substring i… |
| 3456 | Find Special Substring of Length K | 🟢 Easy | 1m 14s | The problem gives us a string s and an integer k. We need to determ… |
| 3457 | Eat Pizzas! | 🟡 Medium | 42s | The problem presents an array pizzas of size n where each element r… |
| 3458 | Select K Disjoint Special Substrings | 🟡 Medium | 46s | The problem asks us to determine whether we can select k disjoint s… |
| 3459 | Length of Longest V-Shaped Diagonal Segment | 🔴 Hard | 2m 2s | We are given an n x m matrix whose entries are only 0, 1, or 2. A v… |
| 3460 | Longest Common Prefix After at Most One Removal | 🟡 Medium | 1m 25s | We are given two lowercase strings, s and t. We may remove at most … |
| 3461 | Check If Digits Are Equal in String After Operations I | 🟢 Easy | 52s | This problem asks us to repeatedly transform a string of digits by … |
| 3462 | Maximum Sum With at Most K Elements | 🟡 Medium | 49s | We are given a matrix grid, where each row contains a collection of… |
| 3463 | Check If Digits Are Equal in String After Operations II | 🔴 Hard | 44s | The problem asks us to repeatedly transform a string of digits unti… |
| 3464 | Maximize the Distance Between Points on a Square | 🔴 Hard | 1m 56s | We are given a square of side length side. Every point in the input… |
| 3465 | Find Products with Valid Serial Numbers | 🟢 Easy | 40s | The problem asks us to query a database table called products to id… |
| 3466 | Maximum Coin Collection | 🟡 Medium | 2m 9s | We are given two arrays, lane1 and lane2, of equal length. Each ind… |
| 3467 | Transform Array by Parity | 🟢 Easy | 1m 11s | The problem gives us an integer array nums and asks us to transform… |
| 3468 | Find the Number of Copy Arrays | 🟡 Medium | 1m 7s | We are given an array original and a range constraint for every pos… |
| 3469 | Find Minimum Cost to Remove Array Elements | 🟡 Medium | 42s | The problem is asking for the minimum total cost required to remove… |
| 3470 | Permutations IV | 🔴 Hard | 1m 54s | We are given two integers, n and k. We must consider all permutatio… |
| 3471 | Find the Largest Almost Missing Integer | 🟢 Easy | 1m 16s | The problem gives us an integer array nums and an integer k. We con… |
| 3472 | Longest Palindromic Subsequence After at Most K Operations | 🟡 Medium | 32s | Here’s a complete, detailed technical solution guide for LeetCode 3… |
| 3474 | Lexicographically Smallest Generated String | 🔴 Hard | 1m 27s | We are given two strings: - str1 of length n, containing only 'T' a… |
| 3475 | DNA Pattern Recognition | 🟡 Medium | 1m 19s | This problem provides a database table named Samples that contains … |
| 3476 | Maximize Profit from Task Assignment | 🟡 Medium | 49s | This problem asks us to assign tasks to workers in order to maximiz… |
| 3477 | Fruits Into Baskets II | 🟢 Easy | 46s | This problem asks us to simulate the placement of fruits into baske… |
| 3478 | Choose K Elements With Maximum Sum | 🟡 Medium | 43s | This problem asks us to compute a "maximum sum" for each index in a… |
| 3479 | Fruits Into Baskets III | 🟡 Medium | 1m 34s | This problem gives us two arrays of equal length: - fruits[i] repre… |
| 3480 | Maximize Subarrays After Removing One Conflicting Pair | 🔴 Hard | 52s | Here’s a detailed technical solution guide following your requested… |
| 3481 | Apply Substitutions | 🟡 Medium | 1m 35s | This problem gives us a collection of replacement rules and a text … |
| 3482 | Analyze Organization Hierarchy | 🔴 Hard | 2m 2s | This problem is a hierarchical organization analysis task over an e… |
| 3484 | Design Spreadsheet | 🟡 Medium | 1m 19s | This problem asks us to design a very small spreadsheet system that… |
| 3486 | Longest Special Path II | 🔴 Hard | 1m 49s | We are given a rooted tree with n nodes. The tree is rooted at node… |
| 3488 | Closest Equal Element Queries | 🟡 Medium | 50s | The problem asks us to process a series of queries on a circular ar… |
| 3489 | Zero Array Transformation IV | 🟡 Medium | 43s | The problem asks us to determine the minimum number of sequential q… |
| 3490 | Count Beautiful Numbers | 🔴 Hard | 38s | This problem asks us to count the number of positive integers betwe… |
| 3491 | Phone Number Prefix | 🟢 Easy | 27s | The problem is asking us to determine whether any phone number in a… |
| 3492 | Maximum Containers on a Ship | 🟢 Easy | 56s | This problem describes a cargo ship with an n × n deck. Since each … |
| 3493 | Properties Graph | 🟡 Medium | 51s | The problem asks us to model a 2D array of integers, called propert… |
| 3494 | Find the Minimum Amount of Time to Brew Potions | 🟡 Medium | 45s | The problem asks us to simulate a sequential brewing process for po… |
| 3495 | Minimum Operations to Make Array Elements Zero | 🔴 Hard | 1m 20s | The problem presents a sequence of queries, each defining a contigu… |
| 3496 | Maximize Score After Pair Deletions | 🟡 Medium | 1m 32s | We are given an integer array nums. While the array contains more t… |
| 3497 | Analyze Subscription Conversion | 🟡 Medium | 57s | This is a SQL aggregation problem where we need to analyze user sub… |
| 3498 | Reverse Degree of a String | 🟢 Easy | 1m 2s | The problem asks us to compute a special value called the reverse d… |
| 3499 | Maximize Active Section with Trade I | 🟡 Medium | 45s | The problem gives a binary string s representing sections of a syst… |