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Golang
1. Two Sum
2. Add Two Numbers
3. Longest Substring Without Repeating Characters
5. Longest Palindromic Substring
6. Zigzag Conversion
14. Longest Common Prefix
16. 3Sum Closest
19. Remove Nth Node From End of List
21. Merge Two Sorted Lists
23. Merge k Sorted Lists
24. Swap Nodes in Pairs
26. Remove Duplicates from Sorted Array
27. Remove Element
28. Find the Index of the First Occurrence in a String
32. Longest Valid Parentheses
33. Search in Rotated Sorted Array
34. Find First and Last Position of Element in Sorted Array
35. Search Insert Position
40. Combination Sum II
45. Jump Game II
46. Permutations ⭐
47. Permutations II ⭐
49. Group Anagrams
53. Maximum Subarray
55. Jump Game
56. Merge Intervals
54. Spiral Matrix
57. Insert Interval
58. Length of Last Word
59. Spiral Matrix II ⭐
63. Unique Paths II
64. Minimum Path Sum
69. Sqrt(x)
70. Climbing Stairs
72. Edit Distance
74. Search a 2D Matrix
75. Sort Colors
78. Subsets
79. Word Search
80. Remove Duplicates from Sorted Array II
81. Search in Rotated Sorted Array II ⭐
82. Remove Duplicates from Sorted List II
88. Merge Sorted Array
90. Subsets II ⭐
92. Reverse Linked List II
94. Binary Tree Inorder Traversal
96. Unique Binary Search Trees
98. Validate Binary Search Tree ⭐
102. Binary Tree Level Order Traversal
103. Binary Tree Zigzag Level Order Traversal
104. Maximum Depth of Binary Tree
105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal
108. Convert Sorted Array to Binary Search Tree
109. Convert Sorted List to Binary Search Tree ⭐
110. Balanced Binary Tree ⭐
111. Minimum Depth of Binary Tree
112. Path Sum
113. Path Sum II
116. Populating Next Right Pointers in Each Node
119. Pascal's Triangle II
120. Triangle
121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II
124. Binary Tree Maximum Path Sum
125. Valid Palindrome
127. Word Ladder ⭐
128. Longest Consecutive Sequence
129. Sum Root to Leaf Numbers
131. Palindrome Partitioning ⭐
134. Gas Station
142. Linked List Cycle II
144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal ⭐
143. Reorder List
144. Binary Tree Preorder Traversal ⭐
147. Insertion Sort List
148. Sort List
150. Evaluate Reverse Polish Notation
151. Reverse Words in a String
152. Maximum Product Subarray
153. Find Minimum in Rotated Sorted Array
155. Min Stack
160. Intersection of Two Linked Lists
167. Two Sum II - Input Array Is Sorted
173. Binary Search Tree Iterator
175. Combine Two Tables
182. Duplicate Emails
183. Customers Who Never Order
187. Repeated DNA Sequences
190. Reverse Bits
196. Delete Duplicate Emails
198. House Robber
199. Binary Tree Right Side View
200. Number of Islands
202. Happy Number
205. Isomorphic Strings
206. Reverse Linked List
208. Implement Trie (Prefix Tree)
209. Minimum Size Subarray Sum
210. Course Schedule II
211. Design Add and Search Words Data Structure
213. House Robber II
219. Contains Duplicate II
221. Maximal Square
225. Implement Stack using Queues
226. Invert Binary Tree
230. Kth Smallest Element in a BST
234. Palindrome Linked List
235. Lowest Common Ancestor of a Binary Search Tree
237. Delete Node in a Linked List
257. Binary Tree Paths
258. Add Digits
260. Single Number III
263. Ugly Number
264. Ugly Number II
278. First Bad Version
279. Perfect Squares
290. Word Pattern
229. Majority Element II
299. Bulls and Cows
303. Range Sum Query - Immutable
316. Remove Duplicate Letters
318. Maximum Product of Word Lengths
322. Coin Change
328. Odd Even Linked List
331. Verify Preorder Serialization of a Binary Tree
334. Increasing Triplet Subsequence
342. Power of Four
343. Integer Break
345. Reverse Vowels of a String
349. Intersection of Two Arrays
350. Intersection of Two Arrays II
367. Valid Perfect Square
374. Guess Number Higher or Lower
376. Wiggle Subsequence
377. Combination Sum IV
380. Insert Delete GetRandom O(1)
382. Linked List Random Node
383. Ransom Note
384. Shuffle an Array
387. First Unique Character in a String
389. Find the Difference
392. Is Subsequence
394. Decode String ⭐
398. Random Pick Index
404. Sum of Left Leaves ⭐
406. Queue Reconstruction by Height
409. Longest Palindrome
412. Fizz Buzz
413. Arithmetic Slices ⭐
414. Third Maximum Number
415. Add Strings
417. Pacific Atlantic Water Flow
419. Battleships in a Board
424. Longest Repeating Character Replacement
427. Construct Quad Tree
429. N-ary Tree Level Order Traversal
430. Flatten a Multilevel Doubly Linked List
433. Minimum Genetic Mutation
438. Find All Anagrams in a String
441. Arranging Coins
442. Find All Duplicates in an Array
445. Add Two Numbers II
448. Find All Numbers Disappeared in an Array
450. Delete Node in a BST
451. Sort Characters By Frequency
452. Minimum Number of Arrows to Burst Balloons
453. Minimum Moves to Equal Array Elements
459. Repeated Substring Pattern
463. Island Perimeter
485. Max Consecutive Ones
491. Non-decreasing Subsequences ⭐
492. Construct the Rectangle
496. Next Greater Element I
503. Next Greater Element II
508. Most Frequent Subtree Sum
513. Find Bottom Left Tree Value
515. Find Largest Value in Each Tree Row
516. Longest Palindromic Subsequence
518. Coin Change II ⭐
520. Detect Capital
523. Continuous Subarray Sum ⭐
532. K-diff Pairs in an Array
535. Encode and Decode TinyURL
538. Convert BST to Greater Tree
539. Minimum Time Difference
540. Single Element in a Sorted Array ⭐
543. Diameter of Binary Tree
547. Number of Provinces
551. Student Attendance Record I
554. Brick Wall
559. Maximum Depth of N-ary Tree
560. Subarray Sum Equals K
561. Array Partition
566. Reshape the Matrix
572. Subtree of Another Tree ⭐
583. Delete Operation for Two Strings
589. N-ary Tree Preorder Traversal
590. N-ary Tree Postorder Traversal
594. Longest Harmonious Subsequence
599. Minimum Index Sum of Two Lists
606. Construct String from Binary Tree
623. Add One Row to Tree
633. Sum of Square Numbers
637. Average of Levels in Binary Tree
643. Maximum Average Subarray I
645. Set Mismatch
646. Maximum Length of Pair Chain
647. Palindromic Substrings
648. Replace Words
649. Dota2 Senate
650. 2 Keys Keyboard
652. Find Duplicate Subtrees
653. Two Sum IV - Input is a BST
654. Maximum Binary Tree
657. Robot Return to Origin
658. Find K Closest Elements
662. Maximum Width of Binary Tree
669. Trim a Binary Search Tree
677. Map Sum Pairs
678. Valid Parenthesis String
684. Redundant Connection
692. Top K Frequent Words
693. Binary Number with Alternating Bits
695. Max Area of Island
701. Insert into a Binary Search Tree
704. Binary Search
714. Best Time to Buy and Sell Stock with Transaction Fee ⭐
724. Find Pivot Index
725. Split Linked List in Parts
733. Flood Fill
739. Daily Temperatures
740. Delete and Earn
743. Network Delay Time
744. Find Smallest Letter Greater Than Target
746. Min Cost Climbing Stairs
766. Toeplitz Matrix
769. Max Chunks To Make Sorted
771. Jewels and Stones
783. Minimum Distance Between BST Nodes
785. Is Graph Bipartite? ⭐
790. Domino and Tromino Tiling ⭐
791. Custom Sort String
792. Number of Matching Subsequences
797. All Paths From Source to Target ⭐
811. Subdomain Visit Count
814. Binary Tree Pruning
821. Shortest Distance to a Character
830. Positions of Large Groups
832. Flipping an Image
835. Image Overlap
836. Rectangle Overlap
841. Keys and Rooms
845. Longest Mountain in Array
844. Backspace String Compare
852. Peak Index in a Mountain Array
865. Smallest Subtree with all the Deepest Nodes ⭐
869. Reordered Power of 2
⭐ 886. Possible Bipartition
872. Leaf-Similar Trees
873. Length of Longest Fibonacci Subsequence
875. Koko Eating Bananas
876. Middle of the Linked List
881. Boats to Save People
884. Uncommon Words from Two Sentences
888. Fair Candy Swap
889. Construct Binary Tree from Preorder and Postorder Traversal
896. Monotonic Array
897. Increasing Order Search Tree
899. Orderly Queue
901. Online Stock Span
904. Fruit Into Baskets
905. Sort Array By Parity
908. Smallest Range I
918. Maximum Sum Circular Subarray
921. Minimum Add to Make Parentheses Valid
926. Flip String to Monotone Increasing ⭐
931. Minimum Falling Path Sum
938. Range Sum of BST
944. Delete Columns to Make Sorted
946. Validate Stack Sequences
951. Flip Equivalent Binary Trees
953. Verifying an Alien Dictionary
958. Check Completeness of a Binary Tree ⭐
976. Largest Perimeter Triangle
977. Squares of a Sorted Array
978. Longest Turbulent Subarray
979. Distribute Coins in Binary Tree ⭐
988. Smallest String Starting From Leaf
989. Add to Array-Form of Integer
990. Satisfiability of Equality Equations ⭐
993. Cousins in Binary Tree
997. Find the Town Judge
998. Maximum Binary Tree II
1004. Max Consecutive Ones III
1008. Construct Binary Search Tree from Preorder Traversal
1014. Best Sightseeing Pair
1022. Sum of Root To Leaf Binary Numbers
1026. Maximum Difference Between Node and Ancestor
1038. Binary Search Tree to Greater Sum Tree
1047. Remove All Adjacent Duplicates In String
1051. Height Checker
1061. Lexicographically Smallest Equivalent String
1071. Greatest Common Divisor of Strings
1078. Occurrences After Bigram
1079. Letter Tile Possibilities ⭐
1089. Duplicate Zeros
1110. Delete Nodes And Return ⭐ Forest
1122. Relative Sort Array
1129. Shortest Path with Alternating Colors ⭐
1137. N-th Tribonacci Number
1143. Longest Common Subsequence
1161. Maximum Level Sum of a Binary Tree
1162. As Far from Land as Possible ⭐
1207. Unique Number of Occurrences
1218. Longest Arithmetic Subsequence of Given Difference
1219. Path with Maximum Gold
1254. Number of Closed Islands ⭐
1261. Find Elements in a Contaminated Binary Tree
1267. Count Servers that Communicate
1268. Search Suggestions System
1286. Iterator for Combination
1295. Find Numbers with Even Number of Digits
1299. Replace Elements with Greatest Element on Right Side
1302. Deepest Leaves Sum
1304. Find N Unique Integers Sum up to Zero
1305. All Elements in Two Binary Search Trees
1306. Jump Game III
1315. Sum of Nodes with Even-Valued Grandparent
1319. Number of Operations to Make Network Connected ⭐
1323. Maximum 69 Number
1325. Delete Leaves With a Given Value
1328. Break a Palindrome
1331. Rank Transform of an Array
1335. Minimum Difficulty of a Job Schedule
1337. The K Weakest Rows in a Matrix
1339. Maximum Product of Splitted Binary Tree ⭐
1345. Jump Game IV
1346. Check If N and Its Double Exist
1347. Minimum Number of Steps to Make Two Strings Anagram
1351. Count Negative Numbers in a Sorted Matrix
1358. Number of Substrings Containing All Three Characters
1372. Longest ZigZag Path in a Binary Tree ⭐
1376. Time Needed to Inform All Employees
1382. Balance a Binary Search Tree
1385. Find the Distance Value Between Two Arrays
1394. Find Lucky Integer in an Array
1395. Count Number of Teams
1402. Reducing Dishes
1408. String Matching in an Array
1417. Reformat The String
1443. Minimum Time to Collect All Apples in a Tree
1448. Count Good Nodes in Binary Tree
1450. Number of Students Doing Homework at a Given Time
1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
1456. Maximum Number of Vowels in a Substring of Given Length
1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
1466. Reorder Routes to Make All Paths Lead to the City Zero
1470. Shuffle the Array
1472. Design Browser History
1480. Running Sum of 1d Array
1491. Average Salary Excluding the Minimum and Maximum Salary
1493. Longest Subarray of 1's After Deleting One Element ⭐
1496. Path Crossing
1497. Check If Array Pairs Are Divisible by k
1498. Number of Subsequences That Satisfy the Given Sum Condition
1502. Can Make Arithmetic Progression From Sequence
1507. Reformat Date
1509. Minimum Difference Between Largest and Smallest Value in Three Moves
1512. Number of Good Pairs
1518. Water Bottles
1519. Number of Nodes in the Sub-Tree With the Same Label ⭐
1523. Count Odd Numbers in an Interval Range
1539. Kth Missing Positive Number
1557. Minimum Number of Vertices to Reach All Nodes
1608. Special Array With X Elements Greater Than or Equal X
1941. Check if All Characters Have Equal Number of Occurrences
1544. Make The String Great
1550. Three Consecutive Odds
1556. Thousand Separator
1567. Maximum Length of Subarray With Positive Product ⭐
1572. Matrix Diagonal Sum
1576. Replace All ?'s to Avoid Consecutive Repeating Characters
1578. Minimum Time to Make Rope Colorful
1588. Sum of All Odd Length Subarrays
1636. Sort Array by Increasing Frequency
1657. Determine if Two Strings Are Close
1662. Check If Two String Arrays are Equivalent
1669. Merge In Between Linked Lists
1704. Determine if String Halves Are Alike
1706. Where Will the Ball Fall
1710. Maximum Units on a Truck
1716. Calculate Money in Leetcode Bank
1720. Decode XORed Array
1732. Find the Highest Altitude
1734. Decode XORed Permutation
1748. Sum of Unique Elements
1764. Form Array by Concatenating Subarrays of Another Array
1765. Map of Highest Peak
1768. Merge Strings Alternately
1773. Count Items Matching a Rule
1781. Sum of Beauty of All Substrings
1791. Find Center of Star Graph
1822. Sign of the Product of an Array
1832. Check if the Sentence Is Pangram
1833. Maximum Ice Cream Bars
1863. Sum of All Subset XOR Totals
1905. Count Sub Islands
1913. Maximum Product Difference Between Two Pairs
1945. Sum of Digits of String After Convert
1952. Three Divisors
1962. Remove Stones to Minimize the Total
1974. Minimum Time to Type Word Using Special Typewriter
1979. Find Greatest Common Divisor of Array
1980. Find Unique Binary String
1992. Find All Groups of Farmland
2024. Maximize the Confusion of an Exam
2044. Count Number of Maximum Bitwise-OR Subsets
2090. K Radius Subarray Averages
2091. Removing Minimum and Maximum From Array
2095. Delete the Middle Node of a Linked List
2116. Check if a Parentheses String Can Be Valid
2129. Capitalize the Title
2130. Maximum Twin Sum of a Linked List
2131. Longest Palindrome by Concatenating Two Letter Words
2133. Check if Every Row and Column Contains All Numbers
2144. Minimum Cost of Buying Candies With Discount
2180. Count Integers With Even Digit Sum
2181. Merge Nodes in Between Zeros
2185. Counting Words With a Given Prefix
2186. Minimum Number of Steps to Make Two Strings Anagram II
2191. Sort the Jumbled Numbers
2196. Create Binary Tree From Descriptions
2215. Find the Difference of Two Arrays
2225. Find Players With Zero or One Losses
2235. Add Two Integers
2236. Root Equals Sum of Children
2239. Find Closest Number to Zero
2244. Minimum Rounds to Complete All Tasks
2248. Intersection of Multiple Arrays
2255. Count Prefixes of a Given String
2256. Minimum Average Difference
2257. Count Unguarded Cells in the Grid
2259. Remove Digit From Number to Maximize Result
2260. Minimum Consecutive Cards to Pick Up
2264. Largest 3-Same-Digit Number in String
2265. Count Nodes Equal to Average of Subtree ⭐
2269. Find the K-Beauty of a Number
2273. Find Resultant Array After Removing Anagrams
2278. Percentage of Letter in String
2279. Maximum Bags With Full Capacity of Rocks
2283. Check if Number Has Equal Digit Count and Digit Value
2287. Rearrange Characters to Make Target String
2293. Min Max Game
2305. Fair Distribution of Cookies ⭐
2316. Count Unreachable Pairs of Nodes in an Undirected Graph
2328. Number of Increasing Paths in a Grid
2331. Evaluate Boolean Binary Tree
2336. Smallest Number in Infinite Set
2348. Number of Zero-Filled Subarrays
2351. First Letter to Appear Twice
2352. Equal Row and Column Pairs
2359. Find Closest Node to Given Two Nodes
2364. Count Number of Bad Pairs
2375. Construct Smallest Number From DI String
2389. Longest Subsequence With Limited Sum
2390. Removing Stars From a String
2391. Minimum Amount of Time to Collect Garbage
2396. Strictly Palindromic Number
2404. Most Frequent Even Element
2405. Optimal Partition of String
2410. Maximum Matching of Players With Trainers
2413. Smallest Even Multiple
2418. Sort the People
2419. Longest Subarray With Maximum Bitwise AND
2428. Maximum Sum of an Hourglass
2441. Largest Positive Integer That Exists With Its Negative
2442. Count Number of Distinct Integers After Reverse Operations
2452. Words Within Two Edits of Dictionary
2460. Apply Operations to an Array
2461. Maximum Sum of Distinct Subarrays With Length K
2465. Number of Distinct Averages
2477. Minimum Fuel Cost to Report to the Capital ⭐
2481. Minimum Cuts to Divide a Circle
2486. Append Characters to String to Make Subsequence
2487. Remove Nodes From Linked List
2491. Divide Players Into Teams of Equal Skill
2492. Minimum Score of a Path Between Two Cities
2496. Maximum Value of a String in an Array
2500. Delete Greatest Value in Each Row
2574. Left and Right Sum Differences
2602. Minimum Operations to Make All Array Elements Equal
2658. Maximum Number of Fish in a Grid
509. Fibonacci Number
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Next - Golang
1. Two Sum
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