My Leetcode Problems' Solutions Sync via LeetHub

Backtracking

#	Problem
22	Generate Parentheses
39	Combination Sum
40	Combination Sum ii
46	Permutations
47	Permutations ii
60	Permutation Sequence
77	Combinations
78	Subsets
79	Word Search
90	Subsets ii
131	Palindrome Partitioning
797	All Paths From Source to Target

BFS

#	Problem
200	Number of Islands
296	Best Meeting Point
305	Number of islands II
490	The Maze
542	01 Matrix
694	Number of Distinct Islands
994	Rotting Oranges
1091	Shortest Path in Binary Matrix

Binary Search

#	Problem
33	Search in Rotated Sorted Array
35	Search Insert Position
69	Sqrtx
74	Search a 2d Mtrix
153	Find Minimum in Rotated Sorted Array
162	Find Peak Element
367	Valid Perfect Square
441	Arranging Coins
704	Binary Search
719	Find k th Smallest Pair Distance
852	Peak Index in a Mountain Array
875	Koko Eating Bananas
981	Time Based Key Value Store
2300	Successful Pairs of Spells and Potions

Bit Manipulation

#	Problem
136	Single Number
190	Reverse Bits
191	Number of 1 Bits
201	Bitwise and of Numbers Range
268	Missing Number
338	Counting Bits
371	Sum of Two Integers

Cycle | FastSlow (Two Pointers in Linked List)

#	Problem
19	Remove-Nth-Node-From-End-of-List
61	Rotate List
86	Partition List
141	Linked List Cycle
142	Linked List Cycle II
143	Reorder List
160	Intersection of Two Linked Lists
876	Middle of the Linked List

DFS

#	Problem
79	Word Search
112	Path Sum
117	Populating Next Right Pointers in Each Node II
130	Surrounded Regions
200	Number of Islands
207	Course Schedule
230	Kth Smallest Element in a BST
236	Lowest Common Ancestor of a Binary Tree
250	Count Univalue Subtrees
297	Serialize and Deserialize Binary Tree
298	Binary Tree Longest Consecutive Sequence
437	Path Sum III
547	Number of Provinces
572	Subtree of Another Tree
590	N-ary Tree Postorder Traversal

DP

#	Problem
5	Longest Palindromic Substring
44	Wildcard Matching
62	Unique Paths
63	Unique Paths II
64	Minimum Path Sum
70	Climbing Stairs
72	Edit Distance
85	Maximal Rectangle
91	Decode Ways
139	Word Break
152	Maximum Product Subarray
198	House Robber
213	House Robber II
279	perfect Squares
300	Longest Increasing Subsequence
322	Coin Change
343	Integer Break
413	Arithmetic Slices
416	Partition Equal Subset Sum
518	Coin Change 2
583	Delete Operation for Two Strings
647	Palindromic Substrings
673	Number of Longest Increasing Subsequence
1143	Longest Common Subsequence
2327	Number of People Aware of a Secret

Greedy

#	Problem
45	Jump Game II
53	Maximum Subarray
55	Jump Game
122	Best Time to Buy and Sell Stock II
134	Gas Station
435	Non Overlapping Intervals
452	Minimum Number of Arrows to Burst Balloons
846	Hand of Straights
2405	Optimal Partition of String
2332	The Latest Time to Catch a Bus
2429	Minimize XOR

Heap

#	Problem
23	Merge k Sorted Lists
215	kth Largest Element in an Array
295	Find Median From Data Stream
347	Top k Frequent Elements
621	Task Scheduler
703	kth Largest Element in a Stream
973	k Closest Points to Origin
1046	Last Stone Weight
2406	Divide Intervals into Minimum Number of Groups

Linked List

#	Problem
21	Merge Two Sorted Lists
23	Merge k Sorted Lists
24	Swap Nodes in Pairs
25	Reverse Nodes in k Group
143	Reorder List
206	Reverse Linked List

OOD

#	Problem
146	LRU Cache
155	Min Stack
384	Shuffle an Array
398	Random Pick Index
604	Design Compressed String Iterator

Prefix

#	Problem
1588	Sum of All Odd Length Subarrays

Regular Expression

#	Problem
8	String to Integer atoi
10	Regular Expression Matching
722	Remove Comments

Recursion

#	Problem
50	powx n
100	Same Tree
102	Binary Tree Level Order Traversal
104	Maximum Depth of Binary Tree
110	Balanced Binary Tree
221	Maximal Square
226	Invert Binary Tree
235	Lowest Common Ancestor of a Binary Search Tree
543	Diameter of Binary Tree
559	Maximum Depth of n-ary Tree
572	Subtree of Another Tree
700	Search in a Binary Search Tree
780	Reaching Points
1444	Number of Ways of Cutting a Pizza
1448	Count Good Nodes in Binary Tree

SQL

#	Problem
175	Combine Two Tables
182	Duplicate Emails
197	Rising Temperature

Stack

#	Problem
20	Valid Parentheses
71	Simplify Path
150	Evaluate Reverse Polish Notation
155	Min Stack
224	Basic Calculator
232	Implement Queue Using Stacks
739	Daily Temperatures
844	Backspace String Compare
2289	Steps to Make Array Non-decreasing
2487	Remove Nodes From Linked List
2645	Minimum Additions to Make Valid String

String

#	Problem
8	String to Integer atoi
38	Count and Say
187	Repeated DNA Sequences
242	Valid Anagram
243	Shortest Word Distance
249	Group Shifted Strings
271	Encode and Decode Strings
293	Flip Game
344	Reverse String
1427	Perform String Shifts
2337	Move Pieces to Obtain a String

Sliding Window

#	Problem
3	Longest Substring Without Repeating Characters
209	Minimum Size Subarray Sum
219	Contains Duplicate II
239	Sliding Window Maximum
424	Longest Repeating Character Replacement
438	Find All Anagrams in a String
567	Permutation in String
713	Subarray Product Less Than K
1151	Minimum Swaps to Group all 1s Together

Trie

#	Problem
208	Implement Trie (Prefix Tree)
211	Design Add and Search Words Data Structure
212	Word Search II

Two Pointers

#	Problem
11	Container With Most Water
15	3sum
16	3sum Closest
31	Next Permutation
41	First Missing Positive
42	Trapping Rain Water
82	Remove Duplicates From Sorted List II
125	Valid Palindrome
167	Two Sum II Input Array is Sorted
344	Reverse String
345	Reverse Vowels of a String
844	Backspace String Compare
986	Interval List Intersections

Other

#	Problem
1	Two Sum
2	Add Two Numbers
6	Zigzag Conversion
12	Integer to Roman
13	Roman to Integer
14	Longest Common Prefix
17	Letter Combinations of a Phone Number
18	4sum
19	Remove nth Node from End of List
21	Merge Two Sorted Lists
36	Valid Sudoku
37	Sudoku Solver
48	Rotate Image
56	Merge Intervals
58	Length of Last Word
59	Spiral Matrix II
66	Plus One
68	Text Justification
73	Set Matrix Zeroes
86	Partition List
88	Merge Sorted Array
125	Valid Palindrome
128	Longest Consecutive Sequence
137	Single Number ii
163	Missing Ranges
172	Factorial Trailing Zeroes
217	Contains Duplicate
202	Happy Number
229	Majority Element II
237	Delete Node in a Linked List
238	Product of Array Except Self
252	Meeting Rooms
266	Palindrome Permutation
268	Missing Number
289	Game of Life
199	Bulls and Cows
409	Longest Palindrome
424	Longest Repeating Character Replacement
448	Find All Numbers Disappeared in an Array
454	4Sum II
500	Keyboard Row
551	Student Attendance Record I
567	Permutation in String
1010	Pairs of Songs with Total Durations Divisible by 60
2221	Find Triangular Sum of an Array
2310	Sum of Numbers With Units Digit K
2341	Maximum Number of Pairs in Array
2342	Max Sum of a Pair With Equal Sum of Digits
2404	Most Frequent Even Element
2419	Longest Subarray with Maximum Bitwise AND
2438	Range Product Queries of Powers
2455	Average Value of Even Numbers That Are Divisible by Three