LeetCode 08xx
LeetCode problems 800–899
LeetCode 08xx
| # | Problem | Difficulty | Time | Notes |
|---|---|---|---|---|
| 800 | Similar RGB Color | 🟢 Easy | 39s | The problem is asking us to find the shorthand RGB color that is mo… |
| 801 | Minimum Swaps To Make Sequences Increasing | 🔴 Hard | 47s | The problem gives us two arrays, nums1 and nums2, both of the same … |
| 802 | Find Eventual Safe States | 🟡 Medium | 1m 10s | This problem gives us a directed graph represented as an adjacency … |
| 803 | Bricks Falling When Hit | 🔴 Hard | 1m 24s | This problem asks us to simulate a sequence of brick removals in a … |
| 804 | Unique Morse Code Words | 🟢 Easy | 58s | The problem asks us to determine how many unique Morse code transfo… |
| 805 | Split Array With Same Average | 🔴 Hard | 2m 8s | The problem asks whether we can divide the given array nums into tw… |
| 806 | Number of Lines To Write String | 🟢 Easy | 43s | This problem is asking us to determine how to write a string s on m… |
| 807 | Max Increase to Keep City Skyline | 🟡 Medium | 1m 16s | This problem gives us an n x n grid where each cell represents the … |
| 808 | Soup Servings | 🟡 Medium | 1m 16s | The problem gives us two soups, A and B, each starting with exactly… |
| 809 | Expressive Words | 🟡 Medium | 1m 27s | The problem asks us to determine how many words in the words array … |
| 810 | Chalkboard XOR Game | 🔴 Hard | 53s | This problem describes a two player game played on an array of inte… |
| 811 | Subdomain Visit Count | 🟡 Medium | 1m 5s | In this problem, we are given a list of strings where each string r… |
| 812 | Largest Triangle Area | 🟢 Easy | 51s | The problem gives us a list of unique points on a 2D X-Y plane. Eac… |
| 813 | Largest Sum of Averages | 🟡 Medium | 1m 21s | The problem gives us an integer array nums and an integer k. We are… |
| 814 | Binary Tree Pruning | 🟡 Medium | 1m 29s | This problem asks us to modify a binary tree by removing every subt… |
| 815 | Bus Routes | 🔴 Hard | 29s | This problem asks us to determine the minimum number of buses requi… |
| 816 | Ambiguous Coordinates | 🟡 Medium | 1m 10s | The problem gives us a compressed string representation of a 2D coo… |
| 817 | Linked List Components | 🟡 Medium | 52s | The problem gives us a singly linked list where every node contains… |
| 818 | Race Car | 🔴 Hard | 1m 9s | This problem asks us to control a car moving on an infinite one dim… |
| 819 | Most Common Word | 🟢 Easy | 1m 20s | The problem asks us to process a paragraph of text and determine wh… |
| 820 | Short Encoding of Words | 🟡 Medium | 52s | The problem asks us to find the length of the shortest reference st… |
| 821 | Shortest Distance to a Character | 🟢 Easy | 1m 20s | The problem gives us a string s and a target character c. For every… |
| 822 | Card Flipping Game | 🟡 Medium | 1m 1s | In this problem, we are given a collection of cards where each card… |
| 823 | Binary Trees With Factors | 🟡 Medium | 42s | The problem asks us to determine the number of distinct binary tree… |
| 824 | Goat Latin | 🟢 Easy | 1m 4s | This problem asks us to transform a given sentence into a fictional… |
| 825 | Friends Of Appropriate Ages | 🟡 Medium | 1m 10s | The problem gives us an array ages, where each value represents the… |
| 826 | Most Profit Assigning Work | 🟡 Medium | 55s | This problem asks us to maximize the total profit earned by assigni… |
| 827 | Making A Large Island | 🔴 Hard | 1m 29s | This problem asks us to find the largest possible island size in a … |
| 828 | Count Unique Characters of All Substrings of a Given String | 🔴 Hard | 1m 10s | The problem asks us to compute the total number of unique character… |
| 829 | Consecutive Numbers Sum | 🔴 Hard | 42s | The problem asks us to determine in how many distinct ways an integ… |
| 830 | Positions of Large Groups | 🟢 Easy | 56s | The problem asks us to identify all large groups in a given string … |
| 831 | Masking Personal Information | 🟡 Medium | 38s | The problem requires creating a masked version of a personal inform… |
| 832 | Flipping an Image | 🟢 Easy | 43s | The problem requires transforming an n x n binary matrix in two ste… |
| 833 | Find And Replace in String | 🟡 Medium | 1m 5s | The problem gives us a string s and three parallel arrays: - indice… |
| 834 | Sum of Distances in Tree | 🔴 Hard | 1m 18s | The problem gives us an undirected tree with n nodes labeled from 0… |
| 835 | Image Overlap | 🟡 Medium | 37s | This problem asks us to determine the maximum overlap between two b… |
| 836 | Rectangle Overlap | 🟢 Easy | 53s | The problem gives us two axis-aligned rectangles, meaning their sid… |
| 837 | New 21 Game | 🟡 Medium | 1m 15s | In this problem, Alice repeatedly draws random numbers until her sc… |
| 838 | Push Dominoes | 🟡 Medium | 1m | This problem models a chain reaction of falling dominoes. We are gi… |
| 839 | Similar String Groups | 🔴 Hard | 41s | The problem asks us to determine the number of similarity groups wi… |
| 840 | Magic Squares In Grid | 🟡 Medium | 42s | The problem asks us to count the number of 3 x 3 magic squares insi… |
| 841 | Keys and Rooms | 🟡 Medium | 50s | This problem can be interpreted as a graph traversal challenge. Eac… |
| 842 | Split Array into Fibonacci Sequence | 🟡 Medium | 1m 41s | The problem gives us a string consisting only of digits, and asks u… |
| 843 | Guess the Word | 🔴 Hard | 1m 16s | This is an interactive problem where we must identify a hidden six-… |
| 844 | Backspace String Compare | 🟢 Easy | 1m 12s | This problem asks us to determine whether two strings become identi… |
| 845 | Longest Mountain in Array | 🟡 Medium | 58s | The problem asks us to find the length of the longest contiguous su… |
| 846 | Hand of Straights | 🟡 Medium | 40s | The problem asks us to determine whether a given collection of card… |
| 847 | Shortest Path Visiting All Nodes | 🔴 Hard | 1m 25s | The problem gives us an undirected and connected graph with n nodes… |
| 848 | Shifting Letters | 🟡 Medium | 59s | This problem asks us to repeatedly apply character shifts to a stri… |
| 849 | Maximize Distance to Closest Person | 🟡 Medium | 1m 18s | In this problem, we are given a binary array called seats. Each pos… |
| 850 | Rectangle Area II | 🔴 Hard | 39s | This problem asks us to compute the total area covered by a set of … |
| 851 | Loud and Rich | 🟡 Medium | 1m 15s | This problem describes a group of people where some people are know… |
| 852 | Peak Index in a Mountain Array | 🟡 Medium | 1m 9s | This problem gives us a special type of array called a mountain arr… |
| 853 | Car Fleet | 🟡 Medium | 1m 16s | The problem describes a set of cars driving toward the same destina… |
| 854 | K-Similar Strings | 🔴 Hard | 1m 18s | The problem asks us to determine the minimum number of swaps needed… |
| 855 | Exam Room | 🟡 Medium | 50s | This problem requires designing a simulation for an exam room seati… |
| 856 | Score of Parentheses | 🟡 Medium | 44s | The problem is asking us to compute a score for a string of balance… |
| 857 | Minimum Cost to Hire K Workers | 🔴 Hard | 1m 30s | In this problem, we are given two arrays, quality and wage, where e… |
| 858 | Mirror Reflection | 🟡 Medium | 1m 8s | This problem describes a square room with perfectly reflective wall… |
| 859 | Buddy Strings | 🟢 Easy | 1m 11s | The problem asks whether it is possible to make two strings equal b… |
| 860 | Lemonade Change | 🟢 Easy | 39s | This problem simulates a lemonade stand where each lemonade costs 5… |
| 861 | Score After Flipping Matrix | 🟡 Medium | 38s | The problem provides an m x n binary matrix, grid, where each eleme… |
| 862 | Shortest Subarray with Sum at Least K | 🔴 Hard | 1m 12s | The problem asks us to find the length of the shortest contiguous s… |
| 863 | All Nodes Distance K in Binary Tree | 🟡 Medium | 1m 22s | This problem gives us the root of a binary tree, a specific target … |
| 864 | Shortest Path to Get All Keys | 🔴 Hard | 34s | This problem asks us to find the shortest path to collect all keys … |
| 865 | Smallest Subtree with all the Deepest Nodes | 🟡 Medium | 1m 15s | The problem gives us the root of a binary tree and asks us to find … |
| 866 | Prime Palindrome | 🟡 Medium | 1m 4s | This problem asks us to find the smallest number greater than or eq… |
| 867 | Transpose Matrix | 🟢 Easy | 1m 7s | This problem asks us to compute the transpose of a given two dimens… |
| 868 | Binary Gap | 🟢 Easy | 58s | The problem asks us to examine the binary representation of a posit… |
| 869 | Reordered Power of 2 | 🟡 Medium | 1m 11s | The problem gives us a positive integer n and asks whether its digi… |
| 870 | Advantage Shuffle | 🟡 Medium | 34s | The problem asks us to maximize the advantage of one array over ano… |
| 871 | Minimum Number of Refueling Stops | 🔴 Hard | 1m 7s | The problem describes a car traveling from position 0 to a destinat… |
| 872 | Leaf-Similar Trees | 🟢 Easy | 1m 4s | This problem asks us to compare two binary trees based only on thei… |
| 873 | Length of Longest Fibonacci Subsequence | 🟡 Medium | 1m 12s | The problem asks us to find the length of the longest subsequence i… |
| 874 | Walking Robot Simulation | 🟡 Medium | 1m 18s | The problem describes a robot moving on an infinite two dimensional… |
| 875 | Koko Eating Bananas | 🟡 Medium | 41s | The problem asks us to determine the minimum eating speed k for Kok… |
| 876 | Middle of the Linked List | 🟢 Easy | 55s | The problem gives us the head of a singly linked list and asks us t… |
| 877 | Stone Game | 🟡 Medium | 1m 10s | The problem describes a two-player game played on an array of stone… |
| 878 | Nth Magical Number | 🔴 Hard | 1m 13s | The problem asks us to find the nth positive integer that is divisi… |
| 879 | Profitable Schemes | 🔴 Hard | 1m 16s | This problem asks us to count how many subsets of crimes satisfy tw… |
| 880 | Decoded String at Index | 🟡 Medium | 1m 12s | The problem gives us an encoded string s that represents a potentia… |
| 881 | Boats to Save People | 🟡 Medium | 1m 10s | This problem asks us to determine the minimum number of boats requi… |
| 882 | Reachable Nodes In Subdivided Graph | 🔴 Hard | 2m 1s | The problem gives us an undirected graph with n original nodes. Eac… |
| 883 | Projection Area of 3D Shapes | 🟢 Easy | 1m 14s | The problem gives us an n x n matrix called grid. Each cell grid[i]… |
| 884 | Uncommon Words from Two Sentences | 🟢 Easy | 56s | This problem asks us to find all words that are considered "uncommo… |
| 885 | Spiral Matrix III | 🟡 Medium | 34s | The problem is asking us to generate the coordinates of cells in a … |
| 886 | Possible Bipartition | 🟡 Medium | 1m 18s | This problem asks whether it is possible to divide n people into ex… |
| 887 | Super Egg Drop | 🔴 Hard | 1m 9s | The problem asks us to determine the minimum number of moves requir… |
| 888 | Fair Candy Swap | 🟢 Easy | 1m 9s | The problem gives us two arrays, aliceSizes and bobSizes, represent… |
| 889 | Construct Binary Tree from Preorder and Postorder Traversal | 🟡 Medium | 1m 3s | The problem gives us two traversal orders of the same binary tree: … |
| 890 | Find and Replace Pattern | 🟡 Medium | 1m 8s | The problem gives us a list of words and a target pattern string. W… |
| 891 | Sum of Subsequence Widths | 🔴 Hard | 41s | The problem asks us to calculate the sum of widths for all non-empt… |
| 892 | Surface Area of 3D Shapes | 🟢 Easy | 1m 14s | The problem gives us an n x n matrix called grid, where each cell c… |
| 893 | Groups of Special-Equivalent Strings | 🟡 Medium | 1m 21s | The problem asks us to group strings based on a special equivalence… |
| 894 | All Possible Full Binary Trees | 🟡 Medium | 1m 11s | The problem asks us to generate every possible full binary tree tha… |
| 895 | Maximum Frequency Stack | 🔴 Hard | 42s | The problem is asking us to design a custom stack-like data structu… |
| 896 | Monotonic Array | 🟢 Easy | 38s | This problem asks us to determine whether a given array of integers… |
| 897 | Increasing Order Search Tree | 🟢 Easy | 1m 1s | This problem gives us the root of a Binary Search Tree, abbreviated… |
| 898 | Bitwise ORs of Subarrays | 🟡 Medium | 1m 12s | The problem asks us to compute every possible bitwise OR value that… |
| 899 | Orderly Queue | 🔴 Hard | 57s | This problem gives us a string s and an integer k. We are allowed t… |