LeetCode

My Solutions for LeetCode problems

This repo will contain my solutions for each of the LeetCode problems I attempt, with each attempt with stats as well. Each question will have it's own branch, with the question and some examples

Problems Done:

• Two Sum [easy] ✔️
• Remove Element [easy] ✔️
• Implement Trie [medium] ✔️
• Palindrome Number [easy] ✔️
• Find All Duplicates In An Array [medium] ✔️
• Concatenation of Array [easy] ✔️
• Build Array from Permutation [easy] ✔️
• Diameter of Binary Tree [easy] ✔️
• Valid Number [hard] ✔️
• Guess Number Higher or Lower [easy] ✔️
• Merge Two Sorted Lists [easy] ✔️
• Reverse Integer [medium] ✔️
• Construct Binary Search Tree from Preorder Traversal [medium] ✔️
• Defanging an IP Address [easy] ✔️
• Final Value of Variable After Performing Operations [easy] ✔️
• Running Sum of 1d Array [easy] ✔️
• Perfect-Squares [medium] ¹
• Best Time to Buy and Sell Stock with Cooldown [medium] ²
• Richest Customer Wealth [easy] ✔️
• Cousins in Binary Tree [easy] ³
• Next Greater Element I [easy] ⁴
• Reverse Words in a String [medium] ✔️
• Insert Delete GetRandom O(1) [medium] ✔️
• Sort Characters By Frequency [medium] ✔️
• Find Minimum in Rotated Sorted Array II [hard] ✔️
• Min Stack [easy] ✔️
• Invert Binary Tree [easy] ✔️
• Sort Colors [medium]
• 3Sum [medium] ⁵
• Rotting Oranges [medium] ⁶
• Surrounded Regions [medium] ⁷
• Unique Paths III [hard] ⁸
• Sum Root to Leaf Numbers [medium]
• Sum of Left Leaves [easy]
• Arranging Coins [easy]
• Multiply Strings [medium]
• Unique Binary Search Trees [medium]
• Number of Valid Words for Each Puzzle [hard] ⁹
• Best Time to Buy and Sell Stock II [medium]
• Minimum Value to Get Positive Step by Step Sum [easy]
• Remove Linked List Elements [easy]
• Largest Divisible Subset [medium] ¹⁰
• Kth Smallest Number in Multiplication Table [hard]
• Unique Paths [medium] ✔️
• Find All Numbers Disappeared in an Array [easy] ✔️
• Combine Two Tables [easy] ✔️
• Hamming Distance [easy] ✔️
• Single Element in a Sorted Array [medium] ✔️
• Delete Node in a BST [medium] ✔️
• Largest Component Size by Common Factor [hard] ¹¹ ✔️
• Interval List Intersections [medium] ✔️
• Maximum Subarray [easy] ¹² ✔️
• Search Insert Position [easy] ✔️
• Contains Duplicate [easy] ✔️
• Accounts Merge [medium] ¹³ ✔️
• Maximal Rectangle [hard] ¹⁴ ✔️
• House Robber [medium] ✔️
• Odd Even Linked List [medium] ✔️
• Maximum Product Subarray [medium] ✔️
• Stream of Characters [hard] ¹⁵ ✔️
• House Robber III [medium] ¹⁶ ✔️
• Minimum Cost to Move Chips to The Same Position [easy] ✔️
• Convert Binary Number in a Linked List to Integer [easy] ✔️
• Binary Tree Tilt [easy] ✔️
• Jump Game III [medium] ¹⁷ ✔️
• Domino and Tromino Tiling [medium] ✔️
• Nth Magical Number [hard] ¹⁸ ✔️
• Partition Equal Subset Sum [medium] ¹⁹ ✔️
• Consecutive Characters [easy] ✔️
• Range Sum of BST [easy] ✔️
• Insertion Sort List [medium] ✔️
• Minimum Height Trees [medium] ✔️
• Maximal Square [medium] ✔️
• Minimum Absolute Difference [easy] ✔️
• Reorder List [medium] ²⁰ ✔️
• Power of Two [easy] ✔️
• Merge Intervals [medium] ✔️
• K Closest Points to Origin [medium] ✔️
• Number Complement [easy] ✔️
• Middle of the Linked List [easy] ✔️
• Populating Next Right Pointers in Each Node [medium] ²¹ ✔️
• Smallest Integer Divisible by K [medium] ✔️
• Pairs of Songs With Total Durations Divisible by 60 [medium] ²² ✔️
• Complement of Base 10 Integer [easy] ✔️
• Palindrome Partitioning [medium] ✔️
• Linked List Random Node [medium] ✔️
• Cherry Pickup II [hard] ✔️
• Robot Bounded In Circle [medium] ²³ ✔️
• Add Binary [easy] ✔️
• Insert into a Binary Search Tree [medium] ✔️
• Minimum Number of Arrows to Burst Balloons [medium] ²⁴ ✔️
• String to Integer (atoi) [medium] ✔️
• Maximize Distance to Closest Person [medium] ✔️
• Word Pattern [easy] ✔️
• Linked List Cycle II [medium] ✔️
• Can Place Flowers [easy] ✔️
• Koko Eating Bananas [medium] ✔️
• Gas Station [medium] ²⁵ ✔️
• Stone Game IV [hard] ✔️
• Valid Mountain Array [easy] ✔️
• All Elements in Two Binary Search Trees [medium] ✔️
• Maximum XOR of Two Numbers in an Array [medium] ²⁶ ✔️
• Rotate Array [medium] ²⁷ ✔️
• Best Time to Buy and Sell Stock [easy] ²⁸ ✔️
• Contiguous Array [Medium] ²⁹ ✔️
• Maximum Number of Words Found in Sentences [easy] ✔️
• Subsets [medium] ✔️
• Single Number [easy] ✔️
• Find the Duplicate Number [medium] ✔️
• Combination Sum III [medium] ✔️ ³⁰
• Count Sorted Vowel Strings[medium] ✔️
• Permutations II [medium] ✔️
• Roman to Integer [easy] ✔️
• Transpose Matrix [easy] ✔️
• Intersection of Two Linked Lists [easy] ³¹ ✔️
• Two Sum II - Input Array Is Sorted [medium] ✔️
• Triangle [medium] ✔️
• Prefix and Suffix Search [hard] ✔️
• Furthest Building You Can Reach [medium] ✔️
• Kth Largest Element in an Array [medium] ✔️
• Longest Common Prefix [easy] ✔️
• Maximum Units on a Truck [easy] ✔️
• Wiggle Subsequence [medium] ✔️
• Power of Four [easy] ✔️
• Power of Three [easy] ✔️
• Palindrome Linked List [easy] ✔️
• Binary Tree Inorder Traversal [easy] ✔️

Footnotes

1. Used solution from Peter de Rivaz (Attempt 1) [current] ↩

2. Used solution from user WookieWarlord (Attempt 1) [current] ↩

3. Used solution from user DBabichev (Attempt 1) [current] ↩

4. Used solution from user yukkk (Attempt 1) [current] ↩

5. Current Attempt Fails (Time Limit Exceeded) ↩

6. Used solution from user gautamsw5 (Attempt 1) [current] ↩

7. Used solution from user jianpingbadao (Attempt 1) [current] ↩

8. Used solution from user zayne-siew (Attempt 1) [current] ↩

9. Used solution from user DBabichev (Attempt 2) [current] ↩

10. Used solution from user mshanker (Attempt 1) [current] ↩

11. Used solution from user swastik1712 (Attempt 1) [current] ↩

12. Used solution from user __LeetCode (Attempt 1) [current] ↩

13. Used solution from user yangshun (Attempt 1) [current] ↩

14. Used solution from user DBabichev (Attempt 1) [current] ↩

15. Used solution from user archit91 (Attempt 1) [current] ↩

16. Used solution from user n124345679976 (Attempt 1) [current] ↩

17. Used solution from user ashu25 (Attempt 1) [current] ↩

18. Used solution from user artod (Attempt 1) [current] ↩

19. Used solution from user ZhexiongLiu (Attempt 1) [current] ↩

20. Used solution from user m-d-f (Attempt 1) [current] ↩

21. Used solution from user zhanweiting (Attempt 1) [current] ↩

22. Used solution from user warmr0bot (Attempt 1) [current] ↩

23. Used solution from user mjgallag (Attempt 1) [current] ↩

24. Used solution from user abstractart (Attempt 1) [current] ↩

25. Used solution from user artod (Attempt 1) [current] ↩

26. Used solution from user shivkj001 (Attempt 1) [current] ↩

27. Used solution from user linfq (Attempt 1) [current] ↩

28. Used solution from user gilbertomanunza (Attempt 1) [current] ↩

29. Used solution from user mageshyt (Attempt 1) [current] ↩

30. Used solution from user S_Nishanth (Attempt 1) [current] ↩

31. Used solution from user constantine786 (Attempt 1) [current] ↩