LeetCode in JavaScript

This is the solutions collection of my LeetCode submissions, most of them are programmed in JavaScript. All JavaScript codes are wrote in ECMAScript 6 standard, each solution file will contain a problem description in the beginning, and followed by some necessary explanation, some problems will provide more than one solution, please refer to the comments after the main solution for one specific problem.

ATTENTION: If you also use JavaScript as your coding language, you should pay attention to some JavaScript INTERNAL issues, such as bitwise operators, so as to let you not drop into some trouble which may be caused by JavaScript itself.

Progress: 171/2520 Solutions

ID	Title	Solution	Difficulty
1	Two Sum	JavaScript· TypeScript	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
11	Container With Most Water	JavaScript	Medium
13	Roman to Integer	JavaScript	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	TypeScript	Medium
19	Remove Nth Node From End of List	JavaScript	Medium
20	valid-parentheses	TypeScript	Easy
22	Generate Parentheses	JavaScript	Medium
24	swap-nodes-in-pairs	TypeScript	Medium
26	Remove Duplicates from Sorted Array	JavaScript	Easy
27	Remove Element	JavaScript	Easy
28	Implement strStr()	JavaScript	Easy
29	Divide Two Integers	JavaScript	Medium
31	next-permutation	TypeScript	Medium
33	Search in Rotated Sorted Array	JavaScript	Medium
34	Search for a Range	JavaScript	Medium
35	Search Insert Position	JavaScript	Easy
38	count-and-say	TypeScript	Medium
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
45	Jump Game II	JavaScript	Hard
46	Permutations	JavaScript	Medium
47	permutations-ii	TypeScript	Medium
48	Rotate Image	JavaScript	Medium
49	Group Anagrams	JavaScript	Medium
50	powx-n	TypeScript	Medium
53	Maximum Subarray	JavaScript · TypeScript	Easy
54	Spiral Matrix	JavaScript	Medium
55	Jump Game *	JavaScript	Medium
56	Merge Intervals	JavaScript	Medium
57	Insert Interval	JavaScript	Hard
62	Unique Paths	JavaScript	Medium
63	Unique Paths ii	JavaScript	Medium
64	minimum-path-sum	TypeScript	Medium
66	Plus One	JavaScript	Easy
69	Sqrt(x)	JavaScript	Easy
70	climbing-stairs	TypeScript	Easy
71	Simplify Path	JavaScript	Medium
73	Set Matrix Zeroes	JavaScript	Medium
75	Sort Colors	JavaScript	Medium
77	combinations	TypeScript	Medium
80	Remove Duplicates from Sorted Array II	JavaScript	Medium
81	Search in Rotated Sorted Array II	JavaScript	Medium
88	Merge Sorted Array	JavaScript	Medium
91	Decode Ways	JavaScript	Medium
93	Restore IP Addresses	JavaScript	Medium
94	Binary Tree Inorder Traversal	TypeScript	Easy
95	unique-binary-search-trees-ii	TypeScript	Medium
96	unique-binary-search-trees	TypeScript	Medium
97	interleaving-string	TypeScript	Medium
98	Validate Binary Search Tree	JavaScript	Medium
99	recover-binary-search-tree	TypeScript	Medium
100	Same Tree	JavaScript	Easy
101	Symmetric Tree	JavaScript	Easy
102	Binary Tree Level Order Traversal	JavaScript	Medium
103	binary-tree-zigzag-level-order-traversal	TypeScript	Medium
104	Maximum Depth of Binary Tree	JavaScript	Easy
107	Binary Tree Level Order Traversal II	JavaScript	Easy
108	Convert Sorted Array to Binary Search Tree	JavaScript	Easy
110	balanced-binary-tree	TypeScript	Easy
111	Minimum Depth of Binary Tree	JavaScript · TypeScript	Easy
114	flatten-binary-tree-to-linked-list	TypeScript	Medium
116	populating-next-right-pointers-in-each-node	TypeScript	Medium
120	Triangle	JavaScript	Medium
121	Best Time to Buy and Sell Stock	JavaScript · TypeScript	Easy
122	Best Time to Buy and Sell Stock II	JavaScript	Easy
123	Best Time to Buy and Sell Stock III *	JavaScript	Hard
127	Word Ladder	JavaScript	Medium
128	Longest Consecutive Sequence	JavaScript	Medium
129	sum-root-to-leaf-numbers	TypeScript	Medium
130	Surrounded Regions	JavaScript	Medium
131	palindrome-partitioning	TypeScript	Medium
133	Clone Graph	JavaScript	Medium
134	Gas Station	JavaScript · TypeScript	Medium
135	Candy	JavaScript	Hard
136	Single Number	JavaScript	Easy
137	Single Number II	JavaScript	Medium
139	word-break	TypeScript	Medium
143	reorder-list	TypeScript	Medium
147	insertion-sort-list	TypeScript	Medium
148	sort-list	TypeScript	Medium
151	Reverse Words in a String	JavaScript	Medium
152	Maximum Product Subarray	JavaScript	Medium
153	Find Minimum in Rotated Sorted Array	JavaScript	Medium
154	Find Minimum in Rotated Sorted Array II	JavaScript	Medium
162	Find Peak Element	JavaScript	Medium
164	Maximum Gap	JavaScript	Hard
165	Compare Version Numbers	JavaScript	Medium
166	fraction-to-recurring-decimal	TypeScript	Medium
169	Majority Element	JavaScript	Easy
175	Combine Two Tables	SQL	Easy
176	Second Highest Salary	SQL	Easy
177	Nth Highest Salary	SQL	Medium
179	largest-number	TypeScript	Medium
181	Employees Earning More Than Their Managers	SQL	Easy
182	Duplicate Emails	SQL	Easy
183	Customers Who Never Order	SQL	Easy
184	Department Highest Salary	SQL	Medium
188	Best Time to Buy and Sell Stock IV	JavaScript	Hard
189	Rotate Array	JavaScript	Easy
190	Reverse Bits	JavaScript	Easy
196	Delete Duplicate Emails	SQL	Easy
197	Rising Temperature	SQL	Easy
198	house-robber	TypeScript	Medium
203	remove-linked-list-elements	TypeScript	Easy
206	Reverse Linked List	JavaScript	Easy
207	Course Schedule	JavaScript	Medium
209	Minimum Size Subarray Sum	JavaScript	Medium
210	Course Schedule II	JavaScript	Medium
213	house-robber-ii	TypeScript	Medium
215	Kth Largest Element in an Array	JavaScript	Medium
217	Contains Duplicate	JavaScript · TypeScript	Easy
219	Contains Duplicate II	JavaScript	Easy
220	Contains Duplicate III	JavaScript · TypeScript	Medium
228	Summary Ranges	JavaScript	Medium
230	kth-smallest-element-in-a-bst	TypeScript	Medium
238	Product of Array Except Self	JavaScript	Medium
239	Sliding Window Maximum	JavaScript	Hard
240	Search a 2D Matrix II	JavaScript · TypeScript	Medium
274	H-Index	JavaScript	Medium
275	H-Index II	JavaScript	Medium
278	First Bad Version	JavaScript	Easy
283	Move Zeroes	JavaScript	Easy
287	Find the Duplicate Number	JavaScript	Medium
289	Game of Life	JavaScript	Medium
295	Find Median from Data Stream	JavaScript	Hard
299	Bulls and Cows	JavaScript	Medium
300	Longest Increasing Subsequence	JavaScript	Medium
307	Range Sum Query - Mutable	JavaScript	Medium
309	Best Time to Buy and Sell Stock with Cooldown	JavaScript	Medium
310	Minimum Height Trees	JavaScript	Medium
315	Count of Smaller Numbers After Self *	JavaScript	Hard
316	remove-duplicate-letters	TypeScript	Medium
322	Coin Change	JavaScript	Medium
327	Count of Range Sum	JavaScript	Hard
334	Increasing Triplet Subsequence	JavaScript · TypeScript	Medium
340	Longest Substring with At Most K Distinct Characters	JavaScript	Hard
342	Power of Four	JavaScript	Easy
344	Reverse String	JavaScript	Easy
349	Intersection of Two Arrays	JavaScript	Easy
350	Intersection of Two Arrays ii	JavaScript	Easy
371	Sum of Two Integers	JavaScript	Easy
374	Guess Number Higher or Lower	JavaScript	Easy
376	Wiggle Subsequence	JavaScript · TypeScript	Medium
384	Shuffle an Array	JavaScript	Medium
395	Longest Substring with At Least K Repeating Characters	JavaScript	Medium
404	Sum of Left Leaves	JavaScript	Easy
406	queue-reconstruction-by-height	TypeScript	Medium
413	Arithmetic Slices	JavaScript	Medium
416	Partition Equal Subset Sum	JavaScript	Medium
424	Longest Repeating Character Replacement	JavaScript	Medium
434	Number of Segments in a String	JavaScript	Easy
486	Predict the Winner	JavaScript	Medium
494	Target Sum	JavaScript	Medium
516	Longest Palindromic Subsequence	JavaScript	Medium
523	Continuous Subarray Sum	JavaScript	Medium
539	Minimum Time Difference	JavaScript	Medium
687	Longest Univalue Path	JavaScript	Easy
779	K-th Symbol in Grammar	JavaScript	Medium
NO	NAME	TypeScript	Easy