Link to all 172 questions (excluding premium)
https://leetcode.com/list/52657ph7

List of all questions including premium questions.

1. Letter Combinations of a Phone Number
2. Valid Parentheses
3. Generate Parentheses
4. Next Permutation
5. Pow(x, n)
6. Spiral Matrix
7. Merge Intervals
8. Clone Graph
9. Word Break
10. Min Stack
11. Find Peak Element
12. Missing Ranges
13. Fraction to Recurring Decimal
14. Binary Search Tree Iterator
15. Number of Islands
16. Implement Trie (Prefix Tree)
17. Summary Ranges
18. Kth Smallest Element in a BST
19. Power of Two
20. Search a 2D Matrix II
21. Strobogrammatic Number
22. Strobogrammatic Number II
23. Group Shifted Strings
24. Flatten 2D Vector
25. Meeting Rooms II
26. Binary Tree Paths
27. 3Sum Smaller
28. Graph Valid Tree
29. Palindrome Permutation
30. Closest Binary Search Tree Value
31. Encode and Decode Strings
32. H-Index
33. Paint Fence
34. Perfect Squares
35. Wiggle Sort
36. Zigzag Iterator
37. Peeking Iterator
38. Walls and Gates
39. Unique Word Abbreviation
40. Game of Life
41. Flip Game
42. Flip Game II
43. Binary Tree Longest Consecutive Sequence
44. Best Time to Buy and Sell Stock with Cooldown
45. Minimum Height Trees
46. Super Ugly Number
47. Binary Tree Vertical Order Traversal
48. Maximum Product of Word Lengths
49. Generalized Abbreviation
50. Number of Connected Components in an Undirected Graph
51. Wiggle Sort II
52. Power of Three
53. Verify Preorder Serialization of a Binary Tree
54. Reconstruct Itinerary
55. Flatten Nested List Iterator
56. Reverse Vowels of a String
57. Moving Average from Data Stream
58. Design Tic-Tac-Toe
59. Android Unlock Patterns
60. Design Snake Game
61. Line Reflection
62. Count Numbers with Unique Digits
63. Logger Rate Limiter
64. Sort Transformed Array
65. Bomb Enemy
66. Design Hit Counter
67. Max Sum of Rectangle No Larger Than K
68. Largest Divisible Subset
69. Plus One Linked List
70. Range Addition
71. Find K Pairs with Smallest Sums
72. Guess Number Higher or Lower
73. Guess Number Higher or Lower II
74. Combination Sum IV
75. Kth Smallest Element in a Sorted Matrix
76. Design Phone Directory
77. Insert Delete GetRandom O(1)
78. Linked List Random Node
79. Longest Absolute File Path
80. Find the Difference
81. UTF-8 Validation
82. Decode String
83. Integer Replacement
84. Evaluate Division
85. Nth Digit
86. Binary Watch
87. Remove K Digits
88. Queue Reconstruction by Height
89. Valid Word Abbreviation
90. Longest Palindrome
91. Add Strings
92. Pacific Atlantic Water Flow
93. Sentence Screen Fitting
94. Maximum XOR of Two Numbers in an Array
95. Valid Word Square
96. Sequence Reconstruction
97. Number of Boomerangs
98. Find All Numbers Disappeared in an Array
99. Sort Characters By Frequency
100. Repeated Substring Pattern
101. Island Perimeter
102. Convex Polygon
103. Encode String with Shortest Length
104. Ones and Zeroes
105. Heaters
106. Magical String
107. License Key Formatting
108. Max Consecutive Ones
109. Predict the Winner
110. Max Consecutive Ones II
111. The Maze
112. Diagonal Traverse
113. Find Mode in Binary Search Tree
114. Next Greater Element II
115. The Maze II
116. Relative Ranks
117. Longest Uncommon Subsequence I
118. Longest Uncommon Subsequence II
119. Longest Word in Dictionary through Deleting
120. Beautiful Arrangement
121. Lonely Pixel I
122. Lonely Pixel II
123. Encode and Decode TinyURL
124. Reverse String II
125. 01 Matrix
126. Diameter of Binary Tree
127. Output Contest Matches
128. Boundary of Binary Tree
129. Binary Tree Longest Consecutive Sequence II
130. Student Attendance Record I
131. Longest Line of Consecutive One in Matrix
132. Delete Operation for Two Strings
133. Add Bold Tag in String
134. Shopping Offers
135. Maximum Average Subarray I
136. Find Duplicate Subtrees
137. Find K Closest Elements
138. Split Array into Consecutive Subsequences
139. Non-decreasing Array
140. Beautiful Arrangement II
141. Repeated String Match
142. My Calendar II
143. Sentence Similarity II
144. Daily Temperatures
145. First Unique Character in a String
146. Shortest Completing Word
147. Largest Number At Least Twice of Others
148. Bold Words in String
149. Find Anagram Mappings
150. Rotated Digits
151. Escape The Ghosts
152. Domino and Tromino Tiling
153. Number of Matching Subsequences
154. Find Eventual Safe States
155. Soup Servings
156. Expressive Words
157. Largest Triangle Area
158. Largest Sum of Averages
159. Ambiguous Coordinates
160. Positions of Large Groups
161. Flipping an Image
162. Find And Replace in String
163. New 21 Game
164. Push Dominoes
165. Magic Squares In Grid
166. Keys and Rooms
167. Backspace String Compare
168. Maximize Distance to Closest Person
169. Peak Index in a Mountain Array
170. Exam Room
171. Median of Two Sorted Arrays
172. Regular Expression Matching
173. Merge k Sorted Lists
174. Trapping Rain Water
175. Wildcard Matching
176. Insert Interval
177. Longest Consecutive Sequence
178. Longest Substring with At Most Two Distinct Characters
179. LRU Cache
180. Word Break II
181. Word Search II
182. Shortest Palindrome
183. The Skyline Problem
184. Basic Calculator
185. Sliding Window Maximum
186. Alien Dictionary
187. Closest Binary Search Tree Value II
188. Expression Add Operators
189. Find Median from Data Stream
190. Serialize and Deserialize Binary Tree
191. Smallest Rectangle Enclosing Black Pixels
192. Number of Islands II
193. Range Sum Query 2D - Mutable
194. Count of Smaller Numbers After Self
195. Number of Atoms
196. My Calendar III
197. Cracking the Safe
198. Couples Holding Hands
199. Max Chunks To Make Sorted II
200. Minimize Max Distance to Gas Station
201. Swim in Rising Water
202. Transform to Chessboard
203. Reaching Points
204. Bricks Falling When Hit
205. Bus Routes
206. Race Car
207. Sum of Distances in Tree
208. Similar String Groups
209. Guess the Word
210. K-Similar Strings
211. Shortest Path Visiting All Nodes
212. Minimum Window Subsequence
213. Remove Duplicate Letters
214. Shortest Distance from All Buildings
215. Burst Balloons
216. Create Maximum Number
217. Count of Range Sum
218. Longest Increasing Path in a Matrix
219. Patching Array
220. Palindrome Pairs
221. Longest Substring with At Most K Distinct Characters
222. Word Squares
223. Russian Doll Envelopes
224. Rearrange String k Distance Apart
225. Perfect Rectangle
226. Trapping Rain Water II
227. Minimum Unique Word Abbreviation
228. LFU Cache
229. Optimal Account Balancing
230. Sliding Window Median
231. Smallest Good Base
232. Reverse Pairs
233. Freedom Trail
234. Word Abbreviation
235. Student Attendance Record II
236. Maximum Vacation Days
237. Median Employee Salary
238. Erect the Fence
239. Maximum Average Subarray II
240. Coin Path
241. Kth Smallest Number in Multiplication Table
242. 24 Game
243. K Empty Slots
244. Redundant Connection II
245. Maximum Sum of 3 Non-Overlapping Subarrays