LeetCode 07xx
LeetCode problems 700–799
LeetCode 07xx
| # | Problem | Difficulty | Time | Notes |
|---|---|---|---|---|
| 700 | Search in a Binary Search Tree | 🟢 Easy | 1m 12s | This problem gives us the root node of a Binary Search Tree, common… |
| 701 | Insert into a Binary Search Tree | 🟡 Medium | 1m 18s | This problem asks us to insert a new value into an existing Binary … |
| 702 | Search in a Sorted Array of Unknown Size | 🟡 Medium | 1m 21s | This problem asks us to search for a target value inside a sorted a… |
| 703 | Kth Largest Element in a Stream | 🟢 Easy | 27s | The problem asks us to design a data structure that continuously tr… |
| 704 | Binary Search | 🟢 Easy | 39s | This problem gives us a sorted array of integers named nums and a t… |
| 705 | Design HashSet | 🟢 Easy | 1m 39s | The problem asks us to design our own HashSet implementation withou… |
| 706 | Design HashMap | 🟢 Easy | 38s | The problem requires us to implement a HashMap from scratch without… |
| 707 | Design Linked List | 🟡 Medium | 1m 14s | This problem asks us to implement our own linked list data structur… |
| 708 | Insert into a Sorted Circular Linked List | 🟡 Medium | 47s | Let's go step by step and create a complete technical solution guid… |
| 709 | To Lower Case | 🟢 Easy | 55s | The problem asks us to convert every uppercase English letter in a … |
| 710 | Random Pick with Blacklist | 🔴 Hard | 1m 18s | The problem asks us to design a data structure that can repeatedly … |
| 711 | Number of Distinct Islands II | 🔴 Hard | 1m 36s | In this problem, we are given a binary matrix where each cell conta… |
| 712 | Minimum ASCII Delete Sum for Two Strings | 🟡 Medium | 1m 28s | The problem gives us two strings, s1 and s2, and asks us to make th… |
| 713 | Subarray Product Less Than K | 🟡 Medium | 1m 28s | The problem asks us to count how many contiguous subarrays of a giv… |
| 714 | Best Time to Buy and Sell Stock with Transaction Fee | 🟡 Medium | 1m 11s | This problem asks us to maximize profit from stock trading over a s… |
| 715 | Range Module | 🔴 Hard | 1m 21s | This problem asks us to design a data structure that dynamically tr… |
| 716 | Max Stack | 🔴 Hard | 37s | The problem asks us to design a stack data structure, MaxStack, whi… |
| 717 | 1-bit and 2-bit Characters | 🟢 Easy | 1m 11s | In this problem, we are given a binary array called bits. The array… |
| 718 | Maximum Length of Repeated Subarray | 🟡 Medium | 1m 15s | The problem asks us to find the longest contiguous subarray that ap… |
| 719 | Find K-th Smallest Pair Distance | 🔴 Hard | 1m 6s | This problem asks us to find the k-th smallest distance among every… |
| 720 | Longest Word in Dictionary | 🟡 Medium | 1m 22s | This problem gives us an array of lowercase English words and asks … |
| 721 | Accounts Merge | 🟡 Medium | 1m 14s | This problem asks us to merge user accounts based on shared email a… |
| 722 | Remove Comments | 🟡 Medium | 43s | The problem asks us to remove comments from a C++ program represent… |
| 723 | Candy Crush | 🟡 Medium | 39s | This problem is essentially a simulation of the Candy Crush game, w… |
| 724 | Find Pivot Index | 🟢 Easy | 1m 4s | The problem asks us to find an index in the array such that the sum… |
| 725 | Split Linked List in Parts | 🟡 Medium | 1m | The problem gives us the head of a singly linked list and an intege… |
| 726 | Number of Atoms | 🔴 Hard | 39s | This problem asks us to parse a chemical formula represented as a s… |
| 727 | Minimum Window Subsequence | 🔴 Hard | 1m 31s | This problem asks us to find the smallest contiguous substring of s… |
| 728 | Self Dividing Numbers | 🟢 Easy | 1m 17s | The problem asks us to find all numbers within a given inclusive ra… |
| 729 | My Calendar I | 🟡 Medium | 1m 6s | The problem asks us to design a calendar system that supports booki… |
| 730 | Count Different Palindromic Subsequences | 🔴 Hard | 1m 23s | This problem asks us to count how many distinct non-empty palindrom… |
| 731 | My Calendar II | 🟡 Medium | 1m 14s | The problem asks us to design a calendar system that supports booki… |
| 732 | My Calendar III | 🔴 Hard | 1m 19s | This problem asks us to design a calendar system that supports addi… |
| 733 | Flood Fill | 🟢 Easy | 41s | The problem is asking us to simulate a flood fill operation on a 2D… |
| 734 | Sentence Similarity | 🟢 Easy | 1m 9s | The problem gives us two sentences, where each sentence is represen… |
| 735 | Asteroid Collision | 🟡 Medium | 1m 23s | The problem gives us a list of integers representing asteroids movi… |
| 736 | Parse Lisp Expression | 🔴 Hard | 1m 24s | The problem asks us to evaluate a Lisp-like expression represented … |
| 737 | Sentence Similarity II | 🟡 Medium | 1m 17s | This problem asks us to determine whether two sentences are conside… |
| 738 | Monotone Increasing Digits | 🟡 Medium | 1m 16s | The problem asks us to find the largest integer less than or equal … |
| 739 | Daily Temperatures | 🟡 Medium | 1m 18s | The problem gives an array called temperatures, where each element … |
| 740 | Delete and Earn | 🟡 Medium | 1m 10s | The problem gives us an integer array nums, and we want to maximize… |
| 741 | Cherry Pickup | 🔴 Hard | 1m 30s | This problem asks us to collect the maximum possible number of cher… |
| 742 | Closest Leaf in a Binary Tree | 🟡 Medium | 38s | The problem asks us to find the closest leaf node to a given target… |
| 743 | Network Delay Time | 🟡 Medium | 1m 7s | This problem models a directed weighted graph. Each node represents… |
| 744 | Find Smallest Letter Greater Than Target | 🟢 Easy | 1m 8s | The problem gives us a sorted array of lowercase English letters an… |
| 745 | Prefix and Suffix Search | 🔴 Hard | 1m 16s | The problem asks us to design a data structure that supports effici… |
| 746 | Min Cost Climbing Stairs | 🟢 Easy | 52s | This problem gives us an array named cost, where each element repre… |
| 747 | Largest Number At Least Twice of Others | 🟢 Easy | 1m 1s | The problem gives us an integer array nums in which the largest val… |
| 748 | Shortest Completing Word | 🟢 Easy | 1m 7s | The problem gives us a string called licensePlate and an array of c… |
| 749 | Contain Virus | 🔴 Hard | 1m 26s | This problem models the spread of a virus on a two-dimensional grid… |
| 750 | Number Of Corner Rectangles | 🟡 Medium | 57s | The problem asks us to count the number of corner rectangles in a b… |
| 751 | IP to CIDR | 🟡 Medium | 39s | This problem is asking us to take a starting IPv4 address and a num… |
| 752 | Open the Lock | 🟡 Medium | 30s | The problem presents a lock with four wheels, each wheel labeled fr… |
| 753 | Cracking the Safe | 🔴 Hard | 1m 11s | This problem asks us to generate the shortest possible string that … |
| 754 | Reach a Number | 🟡 Medium | 38s | The problem asks us to find the minimum number of moves required to… |
| 755 | Pour Water | 🟡 Medium | 1m 42s | This problem asks us to simulate how water droplets behave when pou… |
| 756 | Pyramid Transition Matrix | 🟡 Medium | 1m 31s | Here’s a full, detailed technical solution guide for LeetCode 756 -… |
| 757 | Set Intersection Size At Least Two | 🔴 Hard | 43s | The problem asks us to find the minimum size of a set of integers, … |
| 758 | Bold Words in String | 🟡 Medium | 1m 25s | The problem gives us two inputs: an array of strings called words, … |
| 759 | Employee Free Time | 🔴 Hard | 56s | The problem asks us to determine common free time intervals for a g… |
| 760 | Find Anagram Mappings | 🟢 Easy | 1m 24s | The problem asks us to build an index mapping from nums1 to nums2, … |
| 761 | Special Binary String | 🔴 Hard | 44s | The problem asks us to manipulate a special binary string to produc… |
| 762 | Prime Number of Set Bits in Binary Representation | 🟢 Easy | 47s | The problem requires counting the numbers within a given inclusive … |
| 763 | Partition Labels | 🟡 Medium | 43s | The problem is asking us to partition a string s into as many conti… |
| 764 | Largest Plus Sign | 🟡 Medium | 1m 12s | This problem asks us to find the largest axis-aligned plus sign mad… |
| 765 | Couples Holding Hands | 🔴 Hard | 1m 11s | This problem gives us a row of seats represented by the array row, … |
| 766 | Toeplitz Matrix | 🟢 Easy | 1m 4s | The problem asks us to determine whether a given matrix satisfies t… |
| 767 | Reorganize String | 🟡 Medium | 55s | The problem asks us to rearrange the characters of a given string s… |
| 768 | Max Chunks To Make Sorted II | 🔴 Hard | 1m 9s | The problem asks us to partition an array into the maximum possible… |
| 769 | Max Chunks To Make Sorted | 🟡 Medium | 41s | This problem is asking us to determine the maximum number of contig… |
| 770 | Basic Calculator IV | 🔴 Hard | 42s | The problem requires parsing and evaluating a mathematical expressi… |
| 771 | Jewels and Stones | 🟢 Easy | 1m 3s | In this problem, we are given two strings, jewels and stones. The s… |
| 772 | Basic Calculator III | 🔴 Hard | 1m 21s | This problem asks us to evaluate a mathematical expression represen… |
| 773 | Sliding Puzzle | 🔴 Hard | 45s | The Sliding Puzzle problem presents a 2 x 3 board containing five n… |
| 774 | Minimize Max Distance to Gas Station | 🔴 Hard | 1m 10s | The problem gives us a sorted array called stations, where each val… |
| 775 | Global and Local Inversions | 🟡 Medium | 40s | The problem presents an array nums of length n that is a permutatio… |
| 776 | Split BST | 🟡 Medium | 45s | The problem asks us to split a binary search tree (BST) into two se… |
| 777 | Swap Adjacent in LR String | 🟡 Medium | 1m 20s | The problem gives us two strings, start and result, both consisting… |
| 778 | Swim in Rising Water | 🔴 Hard | 1m 19s | In this problem, we are given an n x n grid where each cell contain… |
| 779 | K-th Symbol in Grammar | 🟡 Medium | 1m 2s | The problem defines a special binary grammar sequence that grows ro… |
| 780 | Reaching Points | 🔴 Hard | 40s | The problem asks whether it is possible to transform a starting poi… |
| 781 | Rabbits in Forest | 🟡 Medium | 56s | In this problem, every rabbit tells us how many other rabbits share… |
| 782 | Transform to Chessboard | 🔴 Hard | 1m 28s | This problem gives us an n x n binary matrix called board, where ev… |
| 783 | Minimum Distance Between BST Nodes | 🟢 Easy | 45s | The problem asks us to find the minimum difference between values o… |
| 784 | Letter Case Permutation | 🟡 Medium | 1m 6s | The problem asks us to generate every possible string that can be f… |
| 785 | Is Graph Bipartite? | 🟡 Medium | 39s | The problem asks whether a given undirected graph is bipartite. In … |
| 786 | K-th Smallest Prime Fraction | 🟡 Medium | 43s | The problem asks us to find the k-th smallest fraction that can be … |
| 787 | Cheapest Flights Within K Stops | 🟡 Medium | 56s | Here’s a complete, detailed technical solution guide for LeetCode 7… |
| 788 | Rotated Digits | 🟡 Medium | 1m 13s | The problem asks us to count the number of good integers within a g… |
| 789 | Escape The Ghosts | 🟡 Medium | 1m 40s | This problem takes place on an infinite two dimensional grid. You b… |
| 790 | Domino and Tromino Tiling | 🟡 Medium | 41s | The problem asks us to compute the number of ways to completely til… |
| 791 | Custom Sort String | 🟡 Medium | 1m 22s | The problem gives us two strings, order and s. The string order def… |
| 792 | Number of Matching Subsequences | 🟡 Medium | 57s | The problem asks us to count how many words in a given list are sub… |
| 793 | Preimage Size of Factorial Zeroes Function | 🔴 Hard | 53s | This problem asks us to determine how many non-negative integers x … |
| 794 | Valid Tic-Tac-Toe State | 🟡 Medium | 1m 6s | This problem asks us to determine whether a given Tic-Tac-Toe board… |
| 795 | Number of Subarrays with Bounded Maximum | 🟡 Medium | 1m | The problem asks us to count how many contiguous, non-empty subarra… |
| 796 | Rotate String | 🟢 Easy | 59s | The problem asks us to determine whether one string can be transfor… |
| 797 | All Paths From Source to Target | 🟡 Medium | 58s | The problem gives us a directed acyclic graph, usually abbreviated … |
| 798 | Smallest Rotation with Highest Score | 🔴 Hard | 33s | The problem asks us to determine the optimal rotation of an array n… |
| 799 | Champagne Tower | 🟡 Medium | 33s | The problem asks us to simulate a process of pouring champagne into… |