LeetCode Solutions in Java

Welcome to my LeetCode Solutions repository! This project contains my solutions to various LeetCode problems implemented in Java.

How to Navigate

Each problem has its own Java package named after the problem's number in the format S0000.
Inside each package is all of the needed code, as well as a Problem.md file containing the problem description.
Feel free to explore and learn from the implementations.

Contributing

Contributions are welcome! If you have a more efficient solution or want to add solutions to new problems, feel free to create a pull request.

Solutions

Number	Title	Runtime	Memory	Problem description
1	Two Sum	2 ms	44.5 MB	Problem
2	Add Two Numbers	2 ms	45 MB	Problem
3	Longest Substring Without Repeating Characters	6 ms	44.4 MB	Problem
4	Median of Two Sorted Arrays	1 ms	45.7 MB	Problem
9	Palindrome Number	7 ms	44.4 MB	Problem
13	Roman to Integer	11 ms	45.2 MB	Problem
14	Longest Common Prefix	3 ms	41.6 MB	Problem
20	Valid Parentheses	1 ms	41.3 MB	Problem
21	Merge Two Sorted Lists	8 ms	43.1 MB	Problem
26	Remove Duplicates from Sorted Array	1 ms	44.7 MB	Problem
27	Remove Element	0 ms	41.8 MB	Problem
28	Find the Index of the First Occurrence in a String	0 ms	42 MB	Problem
35	Search Insert Position	0 ms	43.2 MB	Problem
58	Length of Last Word	0 ms	41.7 MB	Problem
66	Plus One	0 ms	41.4 MB	Problem
67	Add Binary	1 ms	42.4 MB	Problem
69	Sqrt(x)	1 ms	40.9 MB	Problem
70	Climbing Stairs	1 ms	39.8 MB	Problem
75	Sort Colors	1 ms	41.5 MB	Problem
83	Remove Duplicates from Sorted List	0 ms	43.5 MB	Problem
88	Merge Sorted Array	0 ms	41.8 MB	Problem
94	Binary Tree Inorder Traversal	0 ms	41.3 MB	Problem
121	Best Time to Buy and Sell Stock	1 ms	61.6 MB	Problem
125	Valid Palindrome <- Could improve	15 ms	44.8 MB	Problem
136	Single Number	1 ms	45.77 MB	Problem
206	Reverse Linked List	1 ms	42.4 MB	Problem
344	Reverse String	0 ms	48.4 MB	Problem
350	Intersection of Two Arrays II	6 ms	44.8 MB	Problem
409	Longest Palindrome	6 ms	42.4 MB	Problem
506	Relative Ranks <- Needs work!	27 ms	45.4 MB	Problem
633	Sum of Square Numbers	5 ms	40.8 MB	Problem
648	Replace Words	686 ms	53 MB	Problem
786	K-th Smallest Prime Fraction <- Needs work!	672 ms	106.5 MB	Problem
826	Most Profit Assigning Work	11 ms	46 MB	Problem
846	Hand of Straights	59 ms	45.5 MB	Problem
945	Minimum Increment to Make Array Unique	38 ms	60 MB	Problem
1002	Find Common Characters	12 ms	44.8 MB	Problem
1122	Relative Sort Array	3 ms	42.4 MB	Problem
1296	Divide Array in Sets of K Consecutive Numbers	133 ms	56.8 MB	Problem
1509	Minimum Difference Between Largest and Smallest Value in Three Moves	15 ms	57.39 MB	Problem
1550	Three Consecutive Odds	0 ms	41.98 MB	Problem
1791	Find Center of Star Graph	0 ms	66.5 MB	Problem
2037	Minimum Number of Moves to Seat Everyone	2 ms	44.3 MB	Problem
2441	Largest Positive Integer That Exists With Its Negative	5 ms	44.5 MB	Problem
2486	Append Characters to String to Make Subsequence	3 ms	45.3 MB	Problem
2487	Remove Nodes From Linked List	8 ms	63.5 MB	Problem
2678	Number of Senior Citizens	0 ms	42.34MB	Problem
2816	Double a Number Represented as a Linked List	6 ms	45.6 MB	Problem
3075	Maximize Happiness of Selected Children <- Needs work!	34 ms	61.1 MB	Problem