leetcode-js

#	Title	Solution	Difficulty	Tag
1	Two Sum	🔑	Easy	Hash Table
344	Reverse String	🔑	Easy
258	Add Digits	🔑	E	Math
104	Maximum Depth of Binary Tree	🔑	E	DFS
226	Invert Binary Tree	🔑	E	Tree
283	Move Zeroes	🔑	E
349	Intersection of Two Arrays	🔑	E	Binary Search / Hash Table
100	Same Tree	🔑	Easy	DFS
242	Valid Anagram	🔑	E	Hash Table
169	Majority Element	🔑	E	Divide and Conquer
217	Contains Duplicate	🔑	E	Hash Table
350	Intersection of Two Arrays II	🔑	E	Hash Table / Binary Search
168	Excel Sheet Column Title	🔑	E	Math
206	Reverse Linked List	🔑	E
387	First Unique Character in a String	🔑	E	Hash Table / String
412	Fizz Buzz	🔑	E
326	Power of Three	🔑	E	Math
136	Single Number	🔑	E	Hash Table
83	Remove Duplicates from Sorted List	🔑	E	Linked List
121	Best Time to Buy and Sell Stock	🔑	E	DP
70	Climbing Stairs	🔑	E	DP
263	Ugly Number	🔑🔑	E	Math
389	Find the Difference	🔑	E	Hash Table
257	Binary Tree Paths	🔑
111	Minimum Depth of Binary Tree	🔑	E	Divide and Conquer / Binary Tree
53	Maximum Subarray	🔑	M	Divide and Conquer / DP
110	Balanced Binary Tree	🔑	E	DFS
2	Add Two Numbers	🔑	M	Linked List
404	Sum of Left Leaves	🔑	E	Recursion
88	Merge Sorted Array	🔑	E	Array
167	Two Sum II - Input array is sorted	🔑	E	Array
49	Group Anagrams	🔑	E	Hash Table
229	Majority Element II	🔑	E	Array
438	Find All Anagrams in a String	🔑	E	Hash Table
125	Valid Palindrome	🔑	E	String
237	Delete Node in a Linked List	🔑	E	Linked List
21	Merge Two Sorted Lists	🔑	E	Linked List
345	Reverse Vowels of a string	🔑	E	String
27	Remove Element	🔑	E	Array
205	Isomorphic Strings	🔑	E	Hash Table
38	Count and Say	🔑	E	String
290	Word Pattern	🔑	E	Hash Table
219	Contains Duplicate I	🔑	E	Hash Table
299	Bulls and Cows	🔑	E	Hash Table
414	Third Maximum Number	🔑	E	Array
189	Rotate Array	🔑	E	Array
118	Pascal's Triangle	🔑	E	Array
165	Compare Version Numbers	🔑	E	Array
383	Ransom Note	🔑	E	String
58	Length of Last Word	🔑	E	String
20	Valid Parentheses	🔑	E	String
14	Longest Common Prefix	🔑	E	String
6	ZigZag Conversion	🔑	E	String
202	Happy Number	🔑	E	Hash Table
441	Arranging Coins	🔑	E	Hash Table
225	Implement Stack using Queues	🔑	E	Stack
198	House Robber	🔑	E	DP
303	Range Sum Query - Immutable	🔑	E	DP
448	Find ALL Numbers Disappeared in an Array	🔑	E	DP
26	Remove Duplicates from Sorted Array	🔑	E	DP
235	Lowest Common Ancestor of a Binary Search Tree	🔑	E	Tree
278	First Bad Version	🔑	E	Binary Search
392	Is Subsequence	🔑	E	Binary Search
230	Kth Smallest Element in a BST	🔑	E	Binary Search
9	Palindrome Number	🔑	E
131	Palindrome Partitioning	🔑	E	Backtracking
28	Implement strStr()	🔑	E	Two Pointers
515	Find Largest Value in Each Tree Row	🔑	M	DFS
119	Pascal's Triangle II	🔑	E	Array
204	Count Primes	🔑	E	Hash Table
396	Rotate Function	🔑	E	Math
203	Remove Linked List Elements	🔑	E	Linked List
19	Remove Nth Node From End of List	🔑	E	Linked List
844	Backspace String Compare	🔑	E	Two Pointers
784	Letter Case Permutation	🔑	E	Backtracking
234	Palindrome Linked List	🔑	E	Linked List
112	Path Sum	🔑	E	DFS
36	Valid Sudoku	🔑	E	Hash Table
141	Linked List Cycle	🔑	E	Linked List
102	Binary Tree Level Order Traversal	🔑	E	BFS
24	Swap Nodes in Pairs	🔑	M	Linked List
101	Symmetric Tree	🔑	E	BFS
459	Repeated Substring Pattern	🔑	E	String
455	Assign Cookies	🔑	E	Greedy
832	Flipping an Image	🔑	E	Array
566	Reshape the Matrix	🔑	E	Array
643	Maximum Average Subarray I	🔑	E	Array
674	Longest Continuous Increasing Subsequence	🔑	E	Array
766	Toeplitz Matrix	🔑	E	Array
867	Transpose Matrix	🔑	E	Array
804	Unique Morse Code Words	🔑	E	String
657	Judge Route Circle	🔑	E	String
696	Count Binary Substrings	🔑	E	String
841	Keys and Rooms	🔑	M	DFS
513	Find Bottom Left Tree Value	🔑	M	DFS
515	Find Largest Value in Each Tree Row	🔑	M	DFS
337	House Robber III	🔑	M	DFS
739	Daily Temperatures	🔑	M	Hash Table
508	Most Frequent Subtree Sum	🔑	M	Hash Table
554	Brick Wall	🔑	M	Hash Table
648	Replace Words	🔑	M	Hash Table
692	Top K Frequent Words	🔑	M	Hash Table
200	Number of Islands	🔑	M	Hash Table
694	Number of distinct Islands	🔑	M	Hash Table
347	Top K Frequent Elements	🔑	M	Hash TableGroup Shifted String
249	Group Shifted String	🔑	M	Hash TableGroup Shifted String
876	Middle of the Linked List	🔑	E	Linked List
238	Product of Array Except Self	🔑	M	Array
260	Single Number III	🔑	M	Array
724	Find Pivot Index	🔑	M	Array

Nov 30

M406. Queue Reconstruction by Height    Solutions     Greedy

M268. Missing Number    Solutions     Array | Bit

Dec 1

M46. Permutations    Solutions     Backtracking | Recursion

M78. Subsets    Solutions     Backtracking | Recursion

Dec 4

M137. Single Number II    Solutions     Bit manipulation

Dec 25

266. Palindrome Permutation    Solutions     Hash Table

463. Island Perimeter    Solutions     DFS

339. Nested List Weight Sum    Solutions     Recursion

243. Shortest Word Distance    Solutions     Array

M244. Shortest Word Distance II    Solutions     Array

M245. Shortest Word Distance III    Solutions     Array

Jan 4

293. Flip Game    Solutions     Hash Table

M294. Flip Game II    Solutions    

M17. Letter Combinations of a Phone Number    Solutions    

Jan 5

80. Remove Duplicates from Sorted Array II    Solutions     Two pointers

11. Container With Most Water    Solutions     Two pointers

Jan 8

151. Reverse Words in a String    Solutions     String

3. Longest Substring Without Repeating Characters    Solutions     HashMap | Two Pointers

Jan 10

?408. Valid Word Abbreviation   

Solutions     ++      String

5. Longest Palindromic Substring   

Solutions     ++++      String

Jan 11

346. Moving Average from Data Stream   

Solutions     ++      Desgin

160. Intersection of Two Linked Lists   

Solutions     ++      Linked List

152. Maximum Product Subarray   

Solutions     M +++      Array

Jan 12

171. Excel Sheet Column Number   

Solutions     ++      Math

Jan 14

371. Sum of Two Integers   

Solutions     ++      Bit

Jan 18

67. Add Binary   

Solutions     ++      Math String

186. Reverse Words in a String II   

Solutions     +++      String

Jan 24

66. Plus One   

Solutions     +++      Array

M79. Word Search   

Solutions     +++      Array

Jan 25

54. Spiral Matrix   

Solutions     +++++      Array

434. Number of Segments in a String   

Solutions     +++      String

35. Search Insert Position   

Solutions     +++      Array Binary Search

215. Kth Largest Element in an Array   

Solutions          Array Binary Search

215. Kth Largest Element in an Array   

Solutions     +++      Array Binary Search

Feb 17

506. Relative Ranks    ++      Hashmap

508. Most Frequent Subtree Sum    solutions    M     Hashmap

687. Longest Univalue Path    solutions    M     Hashmap

647. Palindromic Substrings    solutions    M     String

594. Longest Harmonious Subsequence    solutions    E     HashMap

771. Jewels and Stones    solutions    E     HashMap

451. Sort Characters By Frequency    solutions    M     HashMap

435. Non-overlapping Intervals    solutions    M     Greedy

560. Subarray Sum Equals K    solutions    M     hashTable

557. Reverse Words in a String III    solutions    M     hashTable

442. Find All Duplicates in an Array    solutions    M     array

695. Max Area of Island    solutions    E     DFS

581. Shortest Unsorted Continuous Subarray    solutions    E     Array