LeetCode 12xx
LeetCode problems 1200–1299
LeetCode 12xx
| # | Problem | Difficulty | Time | Notes |
|---|---|---|---|---|
| 1200 | Minimum Absolute Difference | 🟢 Easy | 51s | The problem asks us to find all pairs of numbers in an array that h… |
| 1201 | Ugly Number III | 🟡 Medium | 1m 23s | The problem defines an "ugly number" as any positive integer that i… |
| 1202 | Smallest String With Swaps | 🟡 Medium | 1m 27s | The problem gives us a string s and a list of index pairs called pa… |
| 1203 | Sort Items by Groups Respecting Dependencies | 🔴 Hard | 1m 44s | This problem asks us to sort n items while satisfying two different… |
| 1204 | Last Person to Fit in the Bus | 🟡 Medium | 1m 6s | This problem gives us a database table named Queue that represents … |
| 1205 | Monthly Transactions II | 🟡 Medium | 1m 2s | This problem asks us to generate a monthly financial summary for ea… |
| 1206 | Design Skiplist | 🔴 Hard | 43s | This problem asks us to implement a Skiplist from scratch, a probab… |
| 1207 | Unique Number of Occurrences | 🟢 Easy | 1m 1s | The problem gives us an integer array arr and asks whether every di… |
| 1208 | Get Equal Substrings Within Budget | 🟡 Medium | 2m 30s | The problem asks us to determine the longest contiguous substring o… |
| 1209 | Remove All Adjacent Duplicates in String II | 🟡 Medium | 1m 3s | The problem asks us to repeatedly remove groups of exactly k adjace… |
| 1210 | Minimum Moves to Reach Target with Rotations | 🔴 Hard | 1m 39s | This problem models a shortest path search on a grid, but the movin… |
| 1211 | Queries Quality and Percentage | 🟢 Easy | 1m 23s | The problem gives us a database table named Queries. Each row repre… |
| 1212 | Team Scores in Football Tournament | 🟡 Medium | 37s | This problem asks us to compute the total points for each football … |
| 1213 | Intersection of Three Sorted Arrays | 🟢 Easy | 1m 5s | The problem gives us three integer arrays, arr1, arr2, and arr3. Ea… |
| 1214 | Two Sum BSTs | 🟡 Medium | 1m 16s | The problem gives us two binary search trees, root1 and root2, alon… |
| 1215 | Stepping Numbers | 🟡 Medium | 46s | The problem is asking us to find all integers within a given range … |
| 1216 | Valid Palindrome III | 🔴 Hard | 39s | The problem asks us to determine whether a given string s can becom… |
| 1217 | Minimum Cost to Move Chips to The Same Position | 🟢 Easy | 1m 1s | The problem asks us to move n chips located at various positions al… |
| 1218 | Longest Arithmetic Subsequence of Given Difference | 🟡 Medium | 49s | The problem asks for the length of the longest arithmetic subsequen… |
| 1219 | Path with Maximum Gold | 🟡 Medium | 1m 21s | The problem gives us a two dimensional grid representing a gold min… |
| 1220 | Count Vowels Permutation | 🔴 Hard | 1m 14s | The problem asks us to count how many valid strings of length n can… |
| 1221 | Split a String in Balanced Strings | 🟢 Easy | 59s | This problem gives us a string s that contains only the characters … |
| 1222 | Queens That Can Attack the King | 🟡 Medium | 1m 14s | In this problem, we are given the positions of several black queens… |
| 1223 | Dice Roll Simulation | 🔴 Hard | 47s | The problem asks us to calculate the total number of valid sequence… |
| 1224 | Maximum Equal Frequency | 🔴 Hard | 1m 22s | The problem gives an array nums consisting of positive integers. We… |
| 1225 | Report Contiguous Dates | 🔴 Hard | 42s | The problem asks us to analyze a system that runs one task per day … |
| 1226 | The Dining Philosophers | 🟡 Medium | 1m 24s | This problem asks us to implement a concurrent synchronization mech… |
| 1227 | Airplane Seat Assignment Probability | 🟡 Medium | 39s | This problem involves a scenario with n passengers and n seats on a… |
| 1228 | Missing Number In Arithmetic Progression | 🟢 Easy | 48s | The problem asks us to find a missing value from an array that orig… |
| 1229 | Meeting Scheduler | 🟡 Medium | 1m 2s | This problem asks us to find the earliest overlapping time slot of … |
| 1230 | Toss Strange Coins | 🟡 Medium | 58s | This problem is asking us to calculate the probability that, when t… |
| 1231 | Divide Chocolate | 🔴 Hard | 45s | The problem asks us to divide a chocolate bar into k + 1 consecutiv… |
| 1232 | Check If It Is a Straight Line | 🟢 Easy | 39s | The problem asks us to determine whether a given set of points in a… |
| 1233 | Remove Sub-Folders from the Filesystem | 🟡 Medium | 46s | This problem asks us to process a list of folder paths and remove a… |
| 1234 | Replace the Substring for Balanced String | 🟡 Medium | 45s | The problem asks us to balance a string composed of exactly four ty… |
| 1235 | Maximum Profit in Job Scheduling | 🔴 Hard | 1m 20s | The problem gives us three arrays of equal length: - startTime[i] r… |
| 1236 | Web Crawler | 🟡 Medium | 1m 14s | The problem asks us to implement a simplified web crawler. We are g… |
| 1237 | Find Positive Integer Solution for a Given Equation | 🟡 Medium | 1m 14s | This problem gives us access to a hidden function f(x, y) through a… |
| 1238 | Circular Permutation in Binary Representation | 🟡 Medium | 1m 6s | This problem asks us to construct a special ordering of all integer… |
| 1239 | Maximum Length of a Concatenated String with Unique Characters | 🟡 Medium | 1m 35s | This problem asks us to select a subsequence of strings from the in… |
| 1240 | Tiling a Rectangle with the Fewest Squares | 🔴 Hard | 40s | The problem is asking us to completely cover a rectangle of size n … |
| 1241 | Number of Comments per Post | 🟢 Easy | 1m 10s | This problem asks us to analyze a database table named Submissions … |
| 1242 | Web Crawler Multithreaded | 🟡 Medium | 49s | The problem asks us to implement a multi-threaded web crawler that … |
| 1243 | Array Transformation | 🟢 Easy | 40s | The problem requires simulating the transformation of an array over… |
| 1244 | Design A Leaderboard | 🟡 Medium | 1m 12s | This problem asks us to design a leaderboard system that supports t… |
| 1245 | Tree Diameter | 🟡 Medium | 42s | The problem asks us to find the diameter of a tree, which is define… |
| 1246 | Palindrome Removal | 🔴 Hard | 56s | The problem requires us to remove all elements from an integer arra… |
| 1247 | Minimum Swaps to Make Strings Equal | 🟡 Medium | 48s | This problem asks us to determine the minimum number of swaps neede… |
| 1248 | Count Number of Nice Subarrays | 🟡 Medium | 1m 13s | The problem asks us to count how many contiguous subarrays contain … |
| 1249 | Minimum Remove to Make Valid Parentheses | 🟡 Medium | 54s | The problem is asking us to process a string containing lowercase l… |
| 1250 | Check If It Is a Good Array | 🔴 Hard | 1m 12s | This problem asks whether it is possible to create the number 1 usi… |
| 1251 | Average Selling Price | 🟢 Easy | 1m 19s | This problem asks us to compute the average selling price for every… |
| 1252 | Cells with Odd Values in a Matrix | 🟢 Easy | 1m 16s | The problem gives us an m x n matrix where every cell initially con… |
| 1253 | Reconstruct a 2-Row Binary Matrix | 🟡 Medium | 50s | The problem asks us to reconstruct a binary matrix with exactly two… |
| 1254 | Number of Closed Islands | 🟡 Medium | 58s | This problem provides a 2D grid representing a map of land and wate… |
| 1255 | Maximum Score Words Formed by Letters | 🔴 Hard | 1m 21s | This problem asks us to select a subset of words that can be constr… |
| 1256 | Encode Number | 🟡 Medium | 47s | Sure, let's build a full, detailed technical solution guide for Lee… |
| 1257 | Smallest Common Region | 🟡 Medium | 1m 16s | This problem describes a hierarchical relationship between geograph… |
| 1258 | Synonymous Sentences | 🟡 Medium | 56s | This problem asks us to generate all possible synonymous variations… |
| 1259 | Handshakes That Don't Cross | 🔴 Hard | 1m 10s | In this problem, we are given an even number of people standing aro… |
| 1260 | Shift 2D Grid | 🟢 Easy | 1m 13s | This problem asks us to simulate repeated shift operations on a 2D … |
| 1261 | Find Elements in a Contaminated Binary Tree | 🟡 Medium | 1m 9s | The problem gives us a binary tree where every node value has been … |
| 1262 | Greatest Sum Divisible by Three | 🟡 Medium | 53s | The problem asks us to find the maximum sum of elements from an int… |
| 1263 | Minimum Moves to Move a Box to Their Target Location | 🔴 Hard | 1m 9s | The problem is a variant of the classic "Sokoban" puzzle. You are g… |
| 1264 | Page Recommendations | 🟡 Medium | 1m 12s | This problem models a small social network with two database tables… |
| 1265 | Print Immutable Linked List in Reverse | 🟡 Medium | 1m 17s | This problem gives us a special type of linked list called an immut… |
| 1266 | Minimum Time Visiting All Points | 🟢 Easy | 1m 7s | The problem gives a sequence of points on a 2D coordinate plane. Ea… |
| 1267 | Count Servers that Communicate | 🟡 Medium | 1m 14s | The problem gives us a two dimensional grid representing a server c… |
| 1268 | Search Suggestions System | 🟡 Medium | 1m 14s | This problem asks us to build a product suggestion system similar t… |
| 1269 | Number of Ways to Stay in the Same Place After Some Steps | 🔴 Hard | 1m 19s | This problem asks us to count how many different ways a pointer can… |
| 1270 | All People Report to the Given Manager | 🟡 Medium | 46s | The problem asks us to identify all employees in a company who dire… |
| 1271 | Hexspeak | 🟢 Easy | 53s | The problem asks us to convert a decimal number given as a string i… |
| 1272 | Remove Interval | 🟡 Medium | 54s | The problem asks us to remove a given interval toBeRemoved from a l… |
| 1273 | Delete Tree Nodes | 🟡 Medium | 1m 3s | The problem provides a tree rooted at node 0, represented in two pa… |
| 1274 | Number of Ships in a Rectangle | 🔴 Hard | 44s | The problem presents an interactive scenario where ships are placed… |
| 1275 | Find Winner on a Tic Tac Toe Game | 🟢 Easy | 57s | This problem asks us to simulate a game of Tic-Tac-Toe on a 3 x 3 g… |
| 1276 | Number of Burgers with No Waste of Ingredients | 🟡 Medium | 1m 25s | Here is a complete, detailed technical solution guide for LeetCode … |
| 1277 | Count Square Submatrices with All Ones | 🟡 Medium | 1m 29s | The problem gives us a binary matrix of size m x n, where every cel… |
| 1278 | Palindrome Partitioning III | 🔴 Hard | 1m 27s | The problem gives us a string s and an integer k. We are allowed to… |
| 1279 | Traffic Light Controlled Intersection | 🟢 Easy | 1m 22s | This problem asks us to design a thread-safe traffic light system f… |
| 1280 | Students and Examinations | 🟢 Easy | 1m 28s | This problem asks us to generate a complete report showing how many… |
| 1281 | Subtract the Product and Sum of Digits of an Integer | 🟢 Easy | 51s | The problem asks us to compute a simple mathematical transformation… |
| 1282 | Group the People Given the Group Size They Belong To | 🟡 Medium | 1m 24s | The problem gives us an array called groupSizes, where each index r… |
| 1283 | Find the Smallest Divisor Given a Threshold | 🟡 Medium | 48s | The problem asks us to find the smallest positive integer divisor f… |
| 1284 | Minimum Number of Flips to Convert Binary Matrix to Zero Matrix | 🔴 Hard | 59s | The problem asks us to transform a given binary matrix mat into a z… |
| 1285 | Find the Start and End Number of Continuous Ranges | 🟡 Medium | 56s | Here’s a full technical solution guide for LeetCode 1285 following … |
| 1286 | Iterator for Combination | 🟡 Medium | 51s | The problem asks us to design a class CombinationIterator that gene… |
| 1287 | Element Appearing More Than 25% In Sorted Array | 🟢 Easy | 1m 8s | The problem gives us a sorted integer array in non-decreasing order… |
| 1288 | Remove Covered Intervals | 🟡 Medium | 1m 9s | The problem gives us a list of intervals, where each interval is re… |
| 1289 | Minimum Falling Path Sum II | 🔴 Hard | 46s | The problem asks us to compute the minimum sum of a falling path wi… |
| 1290 | Convert Binary Number in a Linked List to Integer | 🟢 Easy | 1m 7s | The problem gives us the head of a singly linked list where every n… |
| 1291 | Sequential Digits | 🟡 Medium | 46s | The problem asks us to find all integers within a given range [low,… |
| 1292 | Maximum Side Length of a Square with Sum Less than or Equal to Threshold | 🟡 Medium | 35s | That is a very large, multi-section request covering a full detaile… |
| 1293 | Shortest Path in a Grid with Obstacles Elimination | 🔴 Hard | 1m 42s | This problem asks us to find the minimum number of steps required t… |
| 1294 | Weather Type in Each Country | 🟢 Easy | 53s | This problem asks us to determine the weather type for each country… |
| 1295 | Find Numbers with Even Number of Digits | 🟢 Easy | 55s | The problem asks us to determine how many numbers in a given array … |
| 1296 | Divide Array in Sets of K Consecutive Numbers | 🟡 Medium | 1m 31s | The problem gives us an integer array nums and an integer k. We nee… |
| 1297 | Maximum Number of Occurrences of a Substring | 🟡 Medium | 2m 25s | Please provide the missing problem number or title you want the gui… |
| 1298 | Maximum Candies You Can Get from Boxes | 🔴 Hard | 48s | The problem asks us to determine the maximum number of candies we c… |
| 1299 | Replace Elements with Greatest Element on Right Side | 🟢 Easy | 1m 13s | The problem gives us an integer array arr and asks us to replace ev… |