Awesome Leetcode Solutions List in C#

A curated list of awesome solutions to problems from LeetCode.com Special thanks to GeekForGeeks.com for all the helpful videos and notes to solve these problems.

Word of caution

This is just my attempt to solve the various problems from LeetCode.com and it is far from perfect and would need optimizing to reduce the complexities, but it's a start. All code is in C# only. For now.

Leetcode Problems

#	Title	Test Cases Passed	Difficulty	Media
1	Two Sum	ALL
2	Add Two Numbers	ALL
3	Longest Substring Without Repeating Characters	ALL
4	Median of Two Sorted Arrays	ALL
5	Longest Palindromic Substring	49/92
6	ZigZag Conversion	ALL
7	Reverse Integer	ALL
8	String to Integer(atoi)	ALL
9	Palindrome Number	ALL
10	Regular Expression Matching	(362/445)
11	Container With Most Water	ALL
12	Integer to Roman	ALL
13	Roman to Integer	ALL
14	Longest Common Prefix	NA
15	3Sum	226/313
16	3Sum Closest	NA
17	Letter Combinations of a Phone Number	ALL
18	4Sum	NA
19	Remove Nth Node From End of List	194/208
20	Valid Parentheses	ALL
21	Merge Two Sorted Lists	ALL
22	Generate Parentheses	NA
23	Merge k Sorted Lists	ALL
24	Swap Nodes in Pairs	ALL
25	Reverse Nodes in k-Group	ALL
26	Remove Duplicates from Sorted Array	ALL
27	Remove Element	ALL
28	Implement strStr	NA
29	Divide Two Integers	ALL
30	Substring with Concatenation of All Words	23/169
31	Next Permutation	NA
32	Longest Valid Parentheses	ALL
33	Search in Rotated Sorted Array	ALL
34	Search for a Range	ALL
35	Search Insert Position	NA
36	Valid Sudoku	ALL
37	Sudoku Solver	NA
38	Count and Say	NA
39	Combination Sum	NA
40	Combination Sum II	NA
41	First Missing Positive	NA
42	Trapping Rain Water	NA
43	Multiply Strings	ALL
44	Wildcard Matching	NA
45	Jump Game II	ALL
46	Permutations	NA
47	Permutations II	NA
48	Rotate Image	NA
49	Group Anagrams	NA
50	Pow(x, n)	ALL
51	N-Queens	5/9
52	N-Queens II	NA
53	Maximum Subarray	NA
54	Spiral Matrix	ALL
55	Jump Game	ALL
56	Merge Intervals	NA
57	Insert Interval	NA
58	Length of Last Word	NA
59	Spiral Matrix II	NA
60	Permutation Sequence	NA
61	Rotate List	NA
62	Unique Paths	ALL
63	Unique Paths II	NA
64	Minimum Path Sum	NA
65	Valid Number	NA
66	Plus One	NA
67	Add Binary	NA
68	Text Justification	NA
69	Sqrt(x)	NA
70	Climbing Stairs	ALL
71	Simplify Path	NA
72	Edit Distance	548/1520
74	Search a 2D Matrix	ALL
88	Merge Sorted Array	ALL
94	Binary Tree Inorder Traversal	ALL
127	Word Ladder	17/39
207	Course Schedule	35/42
226	Inverted Binary Tree	ALL
412	Fizz Buzz	ALL
564	Find the Closest Palindrome	ALL
617	Merge Two Binary Trees	ALL
1000	BestPathAcrossMatrix	ALL
1001	RecurringCharacter	ALL
1002	PositiveNegitiveSegregation	ALL
1003	Remove Duplicates Linkedlist	ALL
1004	Trie Data Structure	ALL
1005	Adding Binary Numbers	ALL

↥ back to top

Data Structures

↥ back to top

Algorithms

↥ back to top