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leetcode

LeetCode solutions. LeetCode solutions in English. LeetCode中文解答。

I uploaded some codes here

Video solutions 中文解答中文bilibili解答

Problem

Video Solution

LeetCode 1. Two Sum

LeetCode 2. Add Two Numbers

LeetCode 3. Longest Substring Without Repeating Characters

LeetCode 4. Median of Two Sorted Arrays

LeetCode 5. Longest Palindromic Substring

LeetCode 6. ZigZag Conversion

LeetCode 7. Reverse Integer

LeetCode 8. String to Integer (atoi)

LeetCode 9. Palindrome Number

LeetCode 10. Regular Expression Matching

LeetCode 11. Container With Most Water

LeetCode 12. Integer to Roman

LeetCode 13. Roman to Integer

LeetCode 14. Longest Common Prefix

LeetCode 15. 3Sum

LeetCode 16. 3Sum Closest

LeetCode 17. Letter Combinations of a Phone Number

LeetCode 18. 4Sum

LeetCode 19. Remove Nth Node From End of List

LeetCode 20. Valid Parentheses

LeetCode 21. Merge Two Sorted Lists

LeetCode 22. Generate Parentheses

LeetCode 23. Merge k Sorted Lists

LeetCode 24. Swap Nodes in Pairs

LeetCode 25. Reverse Nodes in k-Group

LeetCode 26. Remove Duplicates from Sorted Array

LeetCode 27. Remove Element

LeetCode 28. Implement strStr()

LeetCode 29. Divide Two Integers

LeetCode 30. Substring with Concatenation of All Words

LeetCode 31. Next Permutation

LeetCode 32. Longest Valid Parentheses

LeetCode 33. Search in Rotated Sorted Array

LeetCode 42. Trapping Rain Water

LeetCode 56. Merge Intervals

LeetCode 67. Add Binary

LeetCode 81. Search in Rotated Sorted Array II

LeetCode 125. Valid Palindrome

LeetCode 153. Find Minimum in Rotated Sorted Array

LeetCode 154. Find Minimum in Rotated Sorted Array II

LeetCode 157. Read N Characters Given Read4

LeetCode 158. Read N Characters Given Read4 II - Call multiple times

LeetCode 236. Lowest Common Ancestor of a Binary Tree

LeetCode 238. Product of Array Except Self

LeetCode 269. Alien Dictionary

Leetcode 295. Find Median from Data Stream

Leetcode 297. Serialize and Deserialize Binary Tree

LeetCode 300. Longest Increasing Subsequence

LeetCode 301. Remove Invalid Parentheses

LeetCode 336. Palindrome Pairs

LeetCode 407. Trapping Rain Water II

LeetCode 415. Add Strings

LeetCode 426. Convert Binary Search Tree to Sorted Doubly Linked List

LeetCode 489. Robot Room Cleaner

LeetCode 560. Subarray Sum Equals K

LeetCode 680. Valid Palindrome II

LeetCode 710. Random Pick with Blacklist

LeetCode 721. Accounts Merge

LeetCode 863. All Nodes Distance K in Binary Tree

LeetCode 918. Maximum Sum Circular Subarray

LeetCode 953. Verifying an Alien Dictionary

LeetCode 973. K Closest Points to Origin

LeetCode 1249. Minimum Remove to Make Valid Parentheses

LeetCode 1428. Leftmost Column with at Least a One

LeetCode 1570. Dot Product of Two Sparse Vectors

LeetCode 1644. Lowest Common Ancestor of a Binary Tree II

LeetCode 1650. Lowest Common Ancestor of a Binary Tree III

LeetCode 1676. Lowest Common Ancestor of a Binary Tree IV

LeetCode 1727. Largest Submatrix With Rearrangements

LeetCode 1751. Maximum Number of Events That Can Be Attended II

LeetCode 1754. Largest Merge Of Two Strings

LeetCode 1755. Closest Subsequence Sum

LeetCode 1760. Minimum Limit of Balls in a Bag

LeetCode 1761. Minimum Degree of a Connected Trio in a Graph

LeetCode 1764. Form Array by Concatenating Subarrays of Another Array

LeetCode 1765. Map of Highest Peak

LeetCode 1766. Tree of Coprimes

LeetCode 1770. Maximum Score from Performing Multiplication Operations

LeetCode 1771. Maximize Palindrome Length From Subsequences

LeetCode 1774. Closest Dessert Cost

LeetCode 1775. Equal Sum Arrays With Minimum Number of Operations

LeetCode 1776. Car Fleet II

LeetCode 1778. Shortest Path in a Hidden Grid

LeetCode 1779. Find Nearest Point That Has the Same X or Y Coordinate

English

中文Youtube

中文b站

LeetCode 1780. Check if Number is a Sum of Powers of Three

English

中文Youtube

中文b站

LeetCode 1781. Sum of Beauty of All Substrings

English

中文Youtube

中文b站

LeetCode 1782. Count Pairs Of Nodes

LeetCode 1784. Check if Binary String Has at Most One Segment of Ones

English

中文Youtube

中文b站

LeetCode 1785. Minimum Elements to Add to Form a Given Sum

English

中文Youtube

中文b站

LeetCode 1786. Number of Restricted Paths From First to Last Node

LeetCode 1787. Make the XOR of All Segments Equal to Zero

LeetCode 1788. Maximize the Beauty of the Garden

LeetCode 1790. Check if One String Swap Can Make Strings Equal

English

中文Youtube

中文b站

LeetCode 1791. Find Center of Star Graph

English

中文Youtube

中文b站

LeetCode 1792. Maximum Average Pass Ratio

LeetCode 1793. Maximum Score of a Good Subarray

LeetCode 1794. Count Pairs of Equal Substrings With Minimum Difference

LeetCode 1796. Second Largest Digit in a String

English

中文Youtube

中文b站

LeetCode 1797. Design Authentication Manager

English

中文Youtube

中文b站

LeetCode 1798. Maximum Number of Consecutive Values You Can Make

LeetCode 1799. Maximize Score After N Operations

LeetCode 1800. Maximum Ascending Subarray Sum

English

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中文b站

LeetCode 1801. Number of Orders in the Backlog

English

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LeetCode 1802. Maximum Value at a Given Index in a Bounded Array

LeetCode 1803. Count Pairs With XOR in a Range

LeetCode 1804. Implement Trie II (Prefix Tree)

LeetCode 1805. Number of Different Integers in a String

English

中文Youtube

中文b站

LeetCode 1807. Evaluate the Bracket Pairs of a String

English

中文Youtube

中文b站

LeetCode 1808. Maximize Number of Nice Divisors

LeetCode 1810. Minimum Path Cost in a Hidden Grid

LeetCode 1812. Determine Color of a Chessboard Square

English

中文Youtube

中文b站

LeetCode 1813. Sentence Similarity III

English

中文Youtube

中文b站

LeetCode 1814. Count Nice Pairs in an Array

English

中文Youtube

中文b站

LeetCode 1815. Maximum Number of Groups Getting Fresh Donuts

LeetCode 1816. Truncate Sentence

English

中文Youtube

中文b站

LeetCode 1817. Finding the Users Active Minutes

English

中文Youtube

中文b站

LeetCode 1818. Minimum Absolute Sum Difference

English

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中文b站

LeetCode 1819. Number of Different Subsequences GCDs

LeetCode 1820. Maximum Number of Accepted Invitations

LeetCode 1822. Sign of the Product of an Array

English

中文Youtube

中文b站

LeetCode 1824. Minimum Sideway Jumps

LeetCode 1825. Finding MK Average

LeetCode 1826. Faulty Sensor

English

中文Youtube

中文b站

LeetCode 1827. Minimum Operations to Make the Array Increasing

English

中文Youtube

中文b站

LeetCode 1828. Queries on Number of Points Inside a Circle

English

中文Youtube

中文b站

LeetCode 1829. Maximum XOR for Each Query

English

中文Youtube

中文b站

LeetCode 1830. Minimum Number of Operations to Make String Sorted

LeetCode 1832. Check if the Sentence Is Pangram

English

中文Youtube

中文b站

LeetCode 1833. Maximum Ice Cream Bars

English

中文Youtube

中文b站

LeetCode 1834. Single-Threaded CPU

English

中文Youtube

中文b站

LeetCode 1835. Find XOR Sum of All Pairs Bitwise AND

LeetCode 1836. Remove Duplicates From an Unsorted Linked List

English

中文Youtube

中文b站

LeetCode 1837. Sum of Digits in Base K

English

中文Youtube

中文b站

LeetCode 1839. Longest Substring Of All Vowels in Order

English

中文Youtube

中文b站

LeetCode 1840. Maximum Building Height

LeetCode 1847. Closest Room

LeetCode 1850. Minimum Adjacent Swaps to Reach the Kth Smallest Number

LeetCode 1851. Minimum Interval to Include Each Query

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