LeetCode

LeetCode Algorithms

(Notes: ":lock:" means you need to subscribe to premium membership from Leetcode)

#	Title	Solution	Difficulty
001	Two Sum	C#	Easy
002	Add Two Numbers	C#	Medium
003	Longest Substring Without Repeating Characters	C#	Medium
004	Median of Two Sorted Arrays	C#	Hard
005	Longest Palindromic Substring	C#	Medium
006	ZigZag Conversion	C#	Easy
007	Reverse Integer	C#	Easy
008	String to Integer (atoi)	C#	Easy
009	Palindrome Number	C#	Easy
010	Regular Expression Matching	C#	Hard
011	Container With Most Water	C#	Medium
012	Integer to Roman	C#	Medium
013	Roman to Integer	C#	Easy
014	Longest Common Prefix	C#	Easy
015	3Sum	C#	Medium
016	3Sum Closest	C#	Medium
017	Letter Combinations of a Phone Number	C#	Medium
018	4Sum	C#	Medium
019	Remove Nth Node From End of List	C#	Easy
020	Valid Parentheses	C#	Easy
021	Merge Two Sorted Lists	C#	Easy
022	Generate Parentheses	C#	Medium
023	Merge k Sorted Lists	C#	Hard
024	Swap Nodes in Pairs	C#	Easy
025	Reverse Nodes in k-Group	C#	Hard
026	Remove Duplicates from Sorted Array	C#	Easy
027	Remove Element	C#	Easy
028	Implement strStr	C#	Easy
029	Divide Two Integers	C#	Medium
030	Substring with Concatenation of All Words	C#	Hard
031	Next Permutation	C#	Medium
032	Longest Valid Parentheses	C#	Hard
033	Search in Rotated Sorted Array	C#	Hard
034	Search for a Range	C#	Medium
035	Search Insert Position	C#	Medium
036	Valid Sudoku	C#	Easy
037	Sudoku Solver	C#	Hard
038	Count and Say	C#	Easy
039	Combination Sum	C#	Medium
040	Combination Sum II	C#	Medium
041	First Missing Positive	C#	Hard
042	Trapping Rain Water	C#	Hard
043	Multiply Strings	C#	Medium
044	Wildcard Matching	C#	Hard
045	Jump Game II	C#	Hard
046	Permutations	C#	Medium
047	Permutations II	C#	Medium
048	Rotate Image	C#	Medium
049	Group Anagrams	C#	Medium
050	Powx, n	C#	Medium
051	NQueens	C#	Hard
052	NQueens II	C#	Hard
053	Maximum Subarray	C#	Medium
054	Spiral Matrix	C#	Medium
055	Jump Game	C#	Medium
056	Merge Intervals	C#	Hard
057	Insert Interval	C#	Hard
058	Length of Last Word	C#	Easy
059	Spiral Matrix II	C#	Medium
060	Permutation Sequence	C#	Medium
061	Rotate List	C#	Medium
062	Unique Paths	C#	Medium
063	Unique Paths II	C#	Medium
064	Minimum Path Sum	C#	Medium
065	Valid Number	C#	Hard
066	Plus One	C#	Easy
067	Add Binary	C#	Easy
068	Text Justification	C#	Hard
069	Sqrtx	C#	Medium
070	Climbing Stairs	C#	Easy
071	Simplify Path	C#	Medium
072	Edit Distance	C#	Hard
073	Set Matrix Zeroes	C#	Medium
074	Search a 2D Matrix	C#	Medium
075	Sort Colors	C#	Medium
076	Minimum Window Substring	C#	Hard
077	Combinations	C#	Medium
078	Subsets	C#	Medium
079	Word Search	C#	Medium
080	Remove Duplicates from Sorted Array II	C#	Medium
081	Search in Rotated Sorted Array II	C#	Medium
082	Remove Duplicates from Sorted List II	C#	Medium
083	Remove Duplicates from Sorted List	C#	Easy
084	Largest Rectangle in Histogram	C#	Hard
085	Maximal Rectangle	C#	Hard
086	Partition List	C#	Medium
087	Scramble String	C#	Hard
088	Merge Sorted Array	C#	Easy
089	Gray Code	C#	Medium
090	Subsets II	C#	Medium
091	Decode Ways	C#	Medium
092	Reverse Linked List II	C#	Medium
093	Restore IP Addresses	C#	Medium
094	Binary Tree Inorder Traversal	C#	Medium
095	Unique Binary Search Trees II	C#	Medium
096	Unique Binary Search Trees	C#	Medium
097	Interleaving String	C#	Hard
098	Validate Binary Search Tree	C#	Medium
099	Recover Binary Search Tree	C#	Hard
100	Same Tree	C#	Easy
101	Symmetric Tree	C#	Easy
102	Binary Tree Level Order Traversal	C#	Medium
103	Binary Tree Zigzag Level Order Traversal	C#	Medium
104	Maximum Depth of Binary Tree	C#	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	C#	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	C#	Medium
107	Binary Tree Level Order Traversal II	C#	Easy