LeetCode C++ Solutions List

1. Two Sum
7. Reverse Integer
9. Palindrome Number
12. Integer to Roman
13. Roman to Integer
14. Longest Common Prefix
20. Valid Parentheses
21. Merge Two Sorted Lists
26. Remove Duplicates from Sorted Array
27. Remove Element
28. Implement strStr()

35. Search Insert Position
38. Count and Say
46. Permutations
53. Maximum Subarray
58. Length of Last Word
66. Plus One
69. Sqrt(x)

67. Add Binary
70. Climbing Stairs
83. Remove Duplicates from Sorted List
88. Merge Sorted Array
94. Binary Tree Inorder Traversal

100. Same Tree



101. Symmetric Tree

107. Binary Tree Level Order Traversal II
108. Convert Sorted Array to Binary Search Tree
110. Balanced Binary Tree
111. Minimum Depth of Binary Tree
112. Path Sum
118. Pascal's Triangle
119. Pascal's Triangle II
121. Best Time to Buy and Sell Stock

122. Best Time to Buy and Sell Stock II
125. Valid Palindrome
141. Linked List Cycle
144. Binary Tree Preorder Traversal
155. Min Stack
160. Intersection of Two Linked Lists

167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title
169. Majority Element

171. Excel Sheet Column Number
172. Factorial Trailing Zeroes

175. Combine Two Tables
176. Second Highest Salary
181. Employees Earning More Than Their Managers

182. Duplicate Emails
183. Customers Who Never Order
189. Rotate Array
190. Reverse Bits
193. Valid Phone Numbers

198. House Robber

191. Number of 1 Bits
195. Tenth Line
196. Delete Duplicate Emails
197. Rising Temperature
202. Happy Number
203. Remove Linked List Elements
205. Isomorphic Strings
206. Reverse Linked List
216. Combination Sum III

217. Contains Duplicate
219. Contains Duplicate II
225. Implement Stack using Queues
230. Kth Smallest Element in a BST
231. Power of Two
232. Implement Queue using Stacks
234. Palindrome Linked List
235. Lowest Common Ancestor of a Binary Search Tree
238. Product of Array Except Self
241. Different Ways to Add Parentheses
242. Valid Anagram

257. Binary Tree Paths

258. Add Digits
260. Single Number III
263. Ugly Number

268. Missing Number
278. First Bad Version
283. Move Zeroes
290. Word Pattern

303. Range Sum Query - Immutable 326. Power of Three
318. Maximum Product of Word Lengths
338. Counting Bits
342. Power of Four
343. Integer Break

345. Reverse Vowels of a String
347. Top K Frequent Elements
349. Intersection of Two Arrays
350. Intersection of Two Arrays II
357. Count Numbers with Unique Digits
367. Valid Perfect Square

371. Sum of Two Integers
374. Guess Number Higher or Lower
378. Kth Smallest Element in a Sorted Matrix
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

401. Binary Watch
404. Sum of Left Leaves
405. Convert a Number to Hexadecimal
406. Queue Reconstruction by Height
409. Longest Palindrome
413. Arithmetic Slices

414. Third Maximum Number415. Add Strings
419. Battleships in a Board
421. Maximum XOR of Two Numbers in an Array
423. Reconstruct Original Digits from English
434. Number of Segments in a String
437. Path Sum III
438. Find All Anagrams in a String
441. Arranging Coins
442. Find All Duplicates in an Array
443. String Compression
445. Add Two Numbers II
447. Number of Boomerangs

448. Find All Numbers Disappeared in an Array
451. Sort Characters By Frequency
454. 4Sum II
455. Assign Cookies
458. Poor Pigs
459. Repeated Substring Pattern
462. Minimum Moves to Equal Array Elements II
477. Total Hamming Distance
479. Largest Palindrome Product
481. Magical String
486. Predict the Winner
495. Teemo Attacking
498. Diagonal Traverse

501. Find Mode in Binary Search Tree
503. Next Greater Element II
504. Base 7
506. Relative Ranks
507. Perfect Number
508. Most Frequent Subtree Sum
513. Find Bottom Left Tree Value
515. Find Largest Value in Each Tree Row
526. Beautiful Arrangement
529. Minesweeper

530. Minimum Absolute Difference in BST
532. K-diff Pairs in an Array
535. Encode and Decode TinyURL
537. Complex Number Multiplication
538. Convert BST to Greater Tree
539. Minimum Time Difference
540. Single Element in a Sorted Array
541. Reverse String II
543. Diameter of Binary Tree
547. Friend Circles

551. Student Attendance Record I
553. Optimal Division
554. Brick Wall
563. Binary Tree Tilt
572. Subtree of Another Tree
575. Distribute Candies
581. Shortest Unsorted Continuous Subarray
592. Fraction Addition and Subtraction
594. Longest Harmonious Subsequence
596. Classes More Than 5 Students
599. Minimum Index Sum of Two Lists

605. Can Place Flowers

606. Construct String from Binary Tree
609. Find Duplicate File in System
623. Add One Row to Tree
626. Exchange Seats
643. Maximum Average Subarray I
653. Two Sum IV - Input is a BST
628. Maximum Product of Three Numbers
638. Shopping Offers
645. Set Mismatch
646. Maximum Length of Pair Chain
647. Palindromic Substrings
648. Replace Words
650. 2 Keys Keyboard
654. Maximum Binary Tree
655. Print Binary Tree

657. Judge Route Circle
661. Image Smoother
665. Non-decreasing Array
667. Beautiful Arrangement II
676. Implement Magic Dictionary
677. Map Sum Pairs
678. Valid Parenthesis String
679. 24 Game
680. Valid Palindrome II
686. Repeated String Match

687. Longest Univalue Path

688. Knight Probability in Chessboard

689. Maximum Sum of 3 Non-Overlapping Subarrays

693. Binary Number with Alternating Bits
694. Number of Distinct Islands
695. Max Area of Island
696. Count Binary Substrings
697. Degree of an Array
698. Partition to K Equal Sum Subsets

712. Minimum ASCII Delete Sum for Two Strings
713. Subarray Product Less Than K
714. Best Time to Buy and Sell Stock with Transaction Fee
715. Range Module
717. 1-bit and 2-bit Characters
718. Maximum Length of Repeated Subarray
719. Find K-th Smallest Pair Distance
720. Longest Word in Dictionary
721. Accounts Merge
724. Find Pivot Index
725. Split Linked List in Parts727. Minimum Window Subsequence