leetcode.js

A repository of my leetcode solutions.

What are here

• Solve leetcode problems.

Problems

#	Title	Solution	Difficulty
1	Two Sum	JavaScript	Easy
2	Add Two Numbers	JavaScript	Medium
3	Longest Substring Without Repeating Characters	JavaScript	Medium
4	Median of Two Sorted Arrays	JavaScript	Hard
5	Longest Palindromic Substring	JavaScript	Medium
6	ZigZag Conversion	JavaScript	Medium
7	Reverse Integer	JavaScript	Easy
8	String to Integer (atoi)	JavaScript	Medium
9	Palindrome Number	JavaScript	Easy
10	Regular Expression Matching	JavaScript	Hard
11	Container With Most Water	JavaScript	Medium
12	Integer to Roman		Medium
13	Roman to Integer		Easy
14	Longest Common Prefix	JavaScript	Easy
15	3Sum	JavaScript	Medium
16	3Sum Closest	JavaScript	Medium
17	Letter Combinations of a Phone Number	JavaScript	Medium
18	4Sum	JavaScript	Medium
19	Remove Nth Node From End of List	JavaScript	Medium
20	Valid Parentheses	JavaScript	Easy
21	Merge Two Sorted Lists	JavaScript	Easy
22	Generate Parentheses	JavaScript	Medium
23	Merge k Sorted Lists	JavaScript	Hard
24	Swap Nodes in Pairs		Medium
25	Reverse Nodes in k-Group	JavaScript	Hard
26	Remove Duplicates from Sorted Array		Easy
27	Remove Element		Easy
28	Implement strStr()		Easy
29	Divide Two Integers	JavaScript	Medium
30	Substring with Concatenation of All Words		Hard
31	Next Permutation	JavaScript	Medium
32	Longest Valid Parentheses	JavaScript	Hard
33	Search in Rotated Sorted Array	JavaScript	Medium
34	Find First and Last Position of Element in Sorted Array	JavaScript	Medium
35	Search Insert Position	JavaScript	Easy
36	Valid Sudoku	JavaScript	Medium
37	Sudoku Solver	JavaScript	Hard
38	Count and Say	JavaScript	Easy
39	Combination Sum	JavaScript	Medium
40	Combination Sum II	JavaScript	Medium
41	First Missing Positive	JavaScript	Hard
42	Trapping Rain Water	JavaScript	Hard
43	Multiply Strings	JavaScript	Medium
44	Wildcard Matching	JavaScript	Hard
45	Jump Game II	JavaScript	Hard
46	Permutations	JavaScript	Medium
47	Permutations II	JavaScript	Medium
48	Rotate Image	JavaScript	Medium
49	Group Anagrams	JavaScript	Medium
50	Pow(x, n)	JavaScript	Medium
51	N-Queens	JavaScript	Hard
52	N-Queens II	JavaScript	Hard
53	Maximum Subarray	JavaScript	Easy
54	Spiral Matrix	JavaScript	Medium
55	Jump Game	JavaScript	Medium
56	Merge Intervals	JavaScript	Medium
57	Insert Interval	JavaScript	Hard
58	Length of Last Word	JavaScript	Easy
59	Spiral Matrix II	JavaScript	Medium
60	Permutation Sequence	JavaScript	Medium
61	Rotate List		Medium
62	Unique Paths		Medium
63	Unique Paths II		Medium
64	Minimum Path Sum	JavaScript	Medium
65	Valid Number	JavaScript	Hard
66	Plus One		Easy
67	Add Binary		Easy
68	Text Justification		Hard
69	Sqrt(x)		Easy
70	Climbing Stairs		Easy
71	Simplify Path		Medium
72	Edit Distance	JavaScript	Hard
73	Set Matrix Zeroes		Medium
74	Search a 2D Matrix		Medium
75	Sort Colors		Medium
76	Minimum Window Substring		Hard
77	Combinations	JavaScript	Medium
78	Subsets		Medium
79	Word Search		Medium
80	Remove Duplicates from Sorted Array II		Medium
81	Search in Rotated Sorted Array II	JavaScript	Medium
82	Remove Duplicates from Sorted List II		Medium
83	Remove Duplicates from Sorted List		Easy
84	Largest Rectangle in Histogram	JavaScript	Hard
85	Maximal Rectangle	JavaScript	Hard
86	Partition List		Medium
87	Scramble String	JavaScript	Hard
88	Merge Sorted Array		Easy
89	Gray Code		Medium
90	Subsets II	JavaScript	Medium
91	Decode Ways	JavaScript	Medium
92	Reverse Linked List II		Medium
93	Restore IP Addresses		Medium
94	Binary Tree Inorder Traversal	JavaScript	Medium
95	Unique Binary Search Trees II		Medium
96	Unique Binary Search Trees		Medium
97	Interleaving String	JavaScript	Hard
98	Validate Binary Search Tree	JavaScript	Medium
99	Recover Binary Search Tree	JavaScript	Hard
100	Same Tree		Easy
101	Symmetric Tree	JavaScript	Easy
102	Binary Tree Level Order Traversal	JavaScript	Medium
103	Binary Tree Zigzag Level Order Traversal	JavaScript	Medium
104	Maximum Depth of Binary Tree	JavaScript	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	JavaScript	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	JavaScript	Medium
107	Binary Tree Level Order Traversal II	JavaScript	Easy
108	Convert Sorted Array to Binary Search Tree	JavaScript	Easy
109	Convert Sorted List to Binary Search Tree	JavaScript	Medium
110	Balanced Binary Tree	JavaScript	Easy
111	Minimum Depth of Binary Tree	JavaScript	Easy
112	Path Sum		Easy
113	Path Sum II	JavaScript	Medium
114	Flatten Binary Tree to Linked List	JavaScript	Medium
115	Distinct Subsequences		Hard
116	Populating Next Right Pointers in Each Node		Medium
117	Populating Next Right Pointers in Each Node II		Medium
118	Pascal's Triangle		Easy
119	Pascal's Triangle II		Easy
120	Triangle		Medium
121	Best Time to Buy and Sell Stock		Easy
122	Best Time to Buy and Sell Stock II		Easy
123	Best Time to Buy and Sell Stock III		Hard
124	Binary Tree Maximum Path Sum	JavaScript	Hard
125	Valid Palindrome		Easy
126	Word Ladder II		Hard
127	Word Ladder		Medium
128	Longest Consecutive Sequence	JavaScript	Hard
129	Sum Root to Leaf Numbers		Medium
130	Surrounded Regions		Medium
131	Palindrome Partitioning		Medium
132	Palindrome Partitioning II		Hard
133	Clone Graph		Medium
134	Gas Station	JavaScript	Medium
135	Candy		Hard
136	Single Number		Easy
137	Single Number II		Medium
138	Copy List with Random Pointer		Medium
139	Word Break		Medium
140	Word Break II		Hard
141	Linked List Cycle		Easy
142	Linked List Cycle II		Medium
143	Reorder List		Medium
144	Binary Tree Preorder Traversal	JavaScript	Medium
145	Binary Tree Postorder Traversal	JavaScript	Hard
146	LRU Cache	JavaScript	Hard
147	Insertion Sort List		Medium
148	Sort List		Medium
149	Max Points on a Line		Hard
150	Evaluate Reverse Polish Notation		Medium
151	Reverse Words in a String	JavaScript	Medium
152	Maximum Product Subarray		Medium
153	Find Minimum in Rotated Sorted Array		Medium
154	Find Minimum in Rotated Sorted Array II		Hard
155	Min Stack		Easy
156	Binary Tree Upside Down		Medium
157	Read N Characters Given Read4		Easy
158	Read N Characters Given Read4 II - Call multiple times		Hard
159	Longest Substring with At Most Two Distinct Characters		Hard
160	Intersection of Two Linked Lists		Easy
161	One Edit Distance		Medium
162	Find Peak Element		Medium
163	Missing Ranges		Medium
164	Maximum Gap		Hard
165	Compare Version Numbers		Medium
166	Fraction to Recurring Decimal		Medium
167	Two Sum II - Input array is sorted		Easy
168	Excel Sheet Column Title		Easy
169	Majority Element		Easy
170	Two Sum III - Data structure design		Easy
171	Excel Sheet Column Number		Easy
172	Factorial Trailing Zeroes		Easy
173	Binary Search Tree Iterator		Medium
174	Dungeon Game		Hard
175	Combine Two Tables		Easy
176	Second Highest Salary		Easy
177	Nth Highest Salary		Medium
178	Rank Scores		Medium
179	Largest Number		Medium
180	Consecutive Numbers		Medium
181	Employees Earning More Than Their Managers		Easy
182	Duplicate Emails		Easy
183	Customers Who Never Order		Easy
184	Department Highest Salary		Medium
185	Department Top Three Salaries		Hard
186	Reverse Words in a String II		Medium
187	Repeated DNA Sequences		Medium
188	Best Time to Buy and Sell Stock IV		Hard
189	Rotate Array		Easy
190	Reverse Bits		Easy
191	Number of 1 Bits		Easy
192	Word Frequency		Medium
193	Valid Phone Numbers		Easy
194	Transpose File		Medium
195	Tenth Line		Easy
196	Delete Duplicate Emails		Easy
197	Rising Temperature		Easy
198	House Robber		Easy
199	Binary Tree Right Side View		Medium
200	Number of Islands		Medium