LeetCode

Repository of solutions to LeetCode problems in Go.

#	Title	Solution	Time	Space	Difficulty	Tag	Notes	Needs Solution
0001	Two Sum	golang			Easy
0002	Add Two Numbers	golang			Medium
0003	Longest Substring Without Repeating Characters	golang			Medium
0004	Median of Two Sorted Arrays	golang			Hard			*
0005	Longest Palindromic Substring	golang			Medium
0006	Zigzag Conversion	golang			Medium			*
0007	Reverse Integer	golang			Medium			*
0008	String to Integer (atoi)	golang			Medium
0009	Palindrome Number	golang			Easy			*
0010	Regular Expression Matching	golang			Hard			*
0011	Container With Most Water	golang			Medium
0012	Integer to Roman	golang			Medium
0013	Roman to Integer	golang			Easy
0014	Longest Common Prefix	golang			Easy			*
0015	3 Sum	golang			Medium
0016	3 Sum Closest	golang	O(n^2)	O(n)	Medium
0017	Letter Combinations of a Phone Number	golang	O(n * 4^n)	O(n)	Medium			*
0018	4Sum	golang	O(n^3)	O(n)	Medium
0019	Remove Nth Node From End of List	golang			Medium			*
0020	Valid Parentheses	golang			Easy			*
0021	Merge Two Sorted Lists	golang			Easy			*
0022	Generate Parentheses	golang			Medium			*
0023	Merge k Sorted Lists	golang			Hard			*
0024	Swap Nodes in Pairs	golang			Medium			*
0025	Reverse Nodes in k-Group	golang			Hard			*
0026	Remove Duplicates from Sorted Array	golang			Easy			*
0027	Remove Element	golang			Easy			*
0028	Find the Index of the First Occurrence in a String	golang			Easy			*
0029	Divide Two Integers	golang			Medium
0030	Substring with Concatenation of All Words	golang			Hard			*
0031	Next Permutation	golang			Medium			*
0032	Longest Valid Parentheses	golang			Hard			*
0033	Search in Rotated Sorted Array	golang			Medium			*
0034	Find First and Last Position of Element in Sorted Array	golang			Medium			*
0035	Search Insert Position	golang			Easy			*
0036	Valid Sudoku	golang			Medium			*
0037	Sudoku Solver	golang			Hard			*
0038	Count and Say	golang			Easy			*
0039	Combination Sum	golang			Medium			*
0040	Combination Sum II	golang			Medium			*
0041	First Missing Positive	golang			Hard			*
0042	Trapping Rain Water	golang	O(n)	O(1)	Hard
0043	Multiply Strings	golang			Medium			*
0044	Wildcard Matching	golang			Hard			*
0045	Jump Game II	golang			Medium
0046	Permutations	golang			Medium			*
0047	Permutations II	golang			Medium			*
0048	Rotate Image	golang			Medium			*
0049	Group Anagrams	golang			Medium
0050	Pow(x, n)	golang			Medium			*
0051	N-Queens	golang			Hard			*
0052	N-Queens II	golang			Hard			*
0053	Maxiumum Subarray	golang			Easy
0054	Spiral Matrix	golang			Medium			*
0055	Jump Game	golang			Medium			*
0056	Merge Intervals	golang			Medium			*
0057	Insert Interval	golang			Hard			*
0058	Length of Last Word	golang			Easy			*
0059	Spiral Matrix II	golang			Medium			*
0060	Permutation Sequence	golang			Medium			*
0061	Rotate List	golang			Medium			*
0062	Unique Paths	golang			Medium			*
0063	Unique Paths II	golang			Medium			*
0064	Minimum Path Sum	golang			Medium			*
0065	Valid Number	golang			Hard			*
0066	Plus One	golang			Easy			*
0067	Add Binary	golang			Easy			*
0068	Text Justification	golang			Hard			*
0069	Sqrt(x)	golang			Easy			*
0070	Climbing Stairs	golang			Easy			*
0071	Simplify Path	golang			Medium
0072	Edit Distance	golang			Hard			*
0073	Set Matrix Zeroes	golang			Medium			*
0074	Search a 2D Matrix	golang			Medium			*
0075	Sort Colors	golang			Medium			*
0076	Minimum Window Substring	golang			Hard			*
0077	Combinations	golang			Medium			*
0078	Subsets	golang			Medium			*
0079	Word Search	golang			Medium			*
0080	Remove Duplicates from Sorted Array II	golang			Medium			*
0081	Search in Rotated Sorted Array II	golang			Medium			*
0082	Remove Duplicates from Sorted List II	golang			Medium			*
0083	Remove Duplicates from Sorted List	golang			Easy			*
0084	Largest Rectangle in Histogram	golang			Hard			*
0085	Maximal Rectangle	golang			Hard			*
0086	Partition List	golang	O(n)	O(1)	Medium
0087	Scramble String	golang			Hard			*
0089	Gray Code	golang			Medium			*
0090	Subsets II	golang			Medium			*
0091	Decode Ways	golang			Medium			*
0092	Reverse Linked List II	golang			Medium			*
0093	Restore IP Addresses	golang			Medium			*
0094	Binary Tree Inorder Traversal	golang			Medium			*
0095	Unique Binary Search Trees II	golang			Medium			*
0096	Unique Binary Search Trees	golang			Medium			*
0097	Interleaving String	golang		Medium			*
0098	Validate Binary Search Tree	golang			Medium			*
0099	Recover Binary Search Tree	golang			Hard			*
0100	Same Tree	golang			Easy			*
0101	Symmetric Tree	golang			Easy			*
0102	Binary Tree Level Order Traversal	golang			Medium			*
0103	Binary Tree Zigzag Level Order Traversal	golang			Medium			*
0104	Maximum Depth of Binary Tree	golang			Easy			*
0105	Construct Binary Tree from Preorder and Inorder Traversal	golang			Medium			*
0106	Construct Binary Tree from Inorder and Postorder Traversal	golang			Medium			*
0107	Binary Tree Level Order Traversal II	golang			Easy			*
0108	Convert Sorted Array to Binary Search Tree	golang			Easy			*
0109	Convert Sorted List to Binary Search Tree	golang			Medium			*
0110	Balanced Binary Tree	golang			Easy			*
0111	Minimum Depth of Binary Tree	golang			Easy			*
0112	Path Sum	golang			Easy			*
0113	Path Sum II	golang			Medium			*
0114	Flatten Binary Tree to Linked List	golang			Medium			*
0115	Distinct Subsequences	golang			Hard			*
0116	Populating Next Right Pointers in Each Node	golang			Medium			*
0117	Populating Next Right Pointers in Each Node II	golang			Medium			*
0118	Pascal's Triangle	golang			Easy			*
0119	Pascal's Triangle II	golang			Easy			*
0120	Triangle	golang			Medium			*
0121	Best Time to Buy and Sell Stock	golang			Easy			*
0122	Best Time to Buy and Sell Stock II	golang			Easy			*
0123	Best Time to Buy and Sell Stock III	golang			Hard			*
0124	Binary Tree Maximum Path Sum	golang			Hard			*
0125	Valid Palindrome	golang			Easy			*
0126	Word Ladder II	golang			Hard			*
0127	Word Ladder	golang			Medium			*
0128	Longest Consecutive Sequence	golang			Hard			*
0129	Sum Root to Leaf Numbers	golang			Medium			*
0130	Surrounded Regions	golang			Medium			*
0131	Palindrome Partitioning	golang			Medium			*
0132	Palindrome Partitioning II	golang			Hard			*
0133	Clone Graph	golang			Medium			*
0134	Gas Station	golang			Medium			*
0135	Candy	golang			Hard			*
0136	Single Number	golang	O(n)	O(1)	Easy
0137	Single Number II	golang	O(n)	O(1)	Medium
0138	Copy List with Random Pointer	golang			Medium
0139	Word Break	golang			Medium			*
0140	Word Break II	golang			Hard			*
0141	Linked List Cycle	golang	O(n)	O(1)	Easy
0142	Linked List Cycle II	golang	O(n)	O(1)	Medium
0143	Reorder List	golang	O(n)	O(1)	Medium
0144	Binary Tree Preorder Traverbsal	golang	O(n)	O(1)	Medium
0146	LRU Cache	golang			Medium			*
0147	Insertion Sort List	golang			Medium			*
0160	Intersection of Two Linked Lists	golang			Easy			*
0191	Number of 1 Bits	golang			Easy			*
0199	Binary Tree Right Side View	golang			Medium	Binary Tree
0234	Palindrome Linked List	golang			Easy			*
0240	Search a 2D Matrix II	golang			Medium
0242	Valid Anagram	golang			Easy		Strings, bytes, runes, and characters in Go
0268	Missing Number	golang			Easy			*
0284	Peeking Iterator	golang			Medium		Iterators in Go
0322	Coin Change	golang			Medium			*
0329	Longest Increasing Path in a Matrix	golang			Hard			*
0341	Flatten Nested List Iterator	golang			Medium			*
0349	Intersection of Two Arrays	golang	O(n + m)	O(n + m)	Easy
0354	Russian Doll Envelopes	golang			Hard			*
0376	Wiggle Subsequence	golang			Medium			*
0377	Combination Sum IV	golang			Medium			*
0413	Arithmetic Slices	golang			Medium	Dynamic Programming
0417	Pacific Atlantic Water Flow	golang			Medium			*
0423	Reconstruct Original Digits from English	golang			Medium			*
0474	Ones and Zeroes	golang			Medium			*
0478	Generate Random Point in a Cirlcle	golang			Medium			*
0509	Fibonacci Number	golang			Easy			*
0524	Longest Word in Dictionary through Deleting	golang			Medium
0535	Encode and Decode TinyURL	golang			Medium			*
0538	Convert BST to Greater Tree	golang			Medium	Binary Tree
0554	Brick Wall	golang			Medium			*
0575	Distribute Candies	golang			Easy
0581	Shortest Unsorted Continuous Subarray	golang			Medium
0594	Longest Harmonious Subsequence	golang			Easy	Hash Table	Hash Tables	*
0622	Design Circular Queue	golang			Medium			*
0623	Add One Row to Tree	golang			Medium			*
0637	Average of Levels in Binary Tree	golang			Easy			*
0645	Set Mismatch	golang			Easy			*
0647	Palindromic Substrings	golang			Medium			*
0665	Non-decreasing Array	golang			Medium			*
0667	Beautiful Arrangement II	golang			Medium			*
0669	Trim a Binary Search Tree	golang	O(n)	O(1)	Medium	Binary Tree	Binary Search Trees
0695	Max Area of Island	golang			Medium			*
0706	Design Hashmap	golang			Easy			*
0714	Best Time to Buy and Sell Stock with Transaction Fee	golang			Medium			*
0775	Global and Local Inversions	golang			Medium			*
0784	Letter Case Permutation	golang			Medium	Bitwise Operation	Bit Hacking with Go
0785	Is Graph Bipartite?	golang			Medium
0820	Short Encoding of Words	golang			Medium			*
0821	Shortest Distance to a Character	golang			Easy
0823	Binary Tree With Factors	golang			Medium			*
0841	Keys and Rooms	golang			Medium			*
0856	Score of Parentheses	golang	O(n)		Medium
0869	Reordered Power of 2	golang			Medium			*
0870	Advantage Shuffle	golang			Medium			*
0895	Maximum Frequency Stack	golang			Hard			*
0916	Word Subsets	golang			Medium			*
0923	3Sum With Multiplicity	golang			Medium			*
0936	Stamping The Sequence	golang			Hard			*
0946	Validate Stack Sequences	golang			Medium
0953	Verifying an Alien Dictionary	golang			Easy			*
0966	Vowel Spellchecker	golang			Medium			*
0991	Broken Calculator	golang			Medium
1091	Shortest Path in Binary Matrix	golang			Medium
1151	Minimum Swaps to Group All 1's Together	golang			Medium			*
1209	Remove All Adjacent Duplicates in String II	golang			Medium			*
1249	Minimum Remove to Make Valid Parentheses	golang			Medium
1302	Deepest Leaves Sum	golang			Medium
1337	The K Weakest Rows in a Matrix	golang			Easy
1342	Number of Steps to Reduce a Number to Zero	golang			Easy
1396	Design Underground System	(./golang/design-underground-system/design-underground-system.go)			Medium			*
1461	Check If a String Contains All Binary Codes of Size K	golang			Medium			*
1551	Minimum Operations to Make Array Equal	golang			Medium			*
1704	Determine if String Halves Are Alike	golang			Easy			*
1721	Swapping Nodes in a Linked List	golang			Medium			*