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Code Snippets
  • Introduction
  • Ami's
    • Topics
      • Arrays
      • Bits & Operators
      • Graph
      • Heap
      • Linked List
      • Maths
      • Matrix
      • Queue
      • Recursion
        • Water and Jug Problem
      • Regular Expression
      • Searching
      • Sorting
      • Stack
      • String
      • Trees
  • leetcode
    • Problems
      • 1-100
        • 1. Two Sum
        • 2. Add Two Numbers
        • 3. Longest Substring Without Repeating Characters
        • 4. Median of Two Sorted Arrays
        • 5. Longest Palindromic Substring
        • 6. ZigZag Conversion
        • 7. Reverse Integer
        • 8. String to Integer (atoi)
        • 9. Palindrome Number
        • 10. Regular Expression Matching
        • 12. Integer to Roman
        • 13. Roman to Integer
        • 15. 3Sum
        • 17. Letter Combinations of a Phone Number
        • 22. Generate Parentheses
        • 29. Divide Two Integers
        • 31. Next Permutation
        • 34. Find First and Last Position of Element in Sorted Array
        • 36. Valid Sudoku
        • 37. Sudoku Solver
        • 38. Count and Say
        • 43. Multiply Strings
        • 44. Wildcard Matching
        • 45. Jump Game II
        • 48. Rotate Image
        • 49. Group Anagrams
        • 51. N-Queens
        • 52. N-Queens II
        • 63. Unique Paths II
        • 65. Valid Number
        • 67. Add Binary
        • 68. Text Justification
        • 69. Sqrt(x)
        • 70. Climbing Stairs
        • 71. Simplify Path
        • 72. Edit Distance
        • 73. Set Matrix Zeroes
        • 74. Search a 2D Matrix
        • 75. Sort Colors
        • 76. Minimum Window Substring
        • 77. Combinations
        • 78. Subsets
        • 79. Word Search
        • 80. Remove Duplicates from Sorted Array II
        • 81. Search in Rotated Sorted Array II
        • 82. Remove Duplicates from Sorted List II
        • 83. Remove Duplicates from Sorted List
        • 84. Largest Rectangle in Histogram
        • 85. Maximal Rectangle
        • 86. Partition List
        • 87. Scramble String
        • 88. Merge Sorted Array
        • 89. Gray Code
        • 90. Subsets II
        • 91. Decode Ways
        • 92. Reverse Linked List II
        • 93. Restore IP Addresses
        • 94. Binary Tree Inorder Traversal
        • 95. Unique Binary Search Trees II
        • 96. Unique Binary Search Trees
        • 97. Interleaving String
        • 98. Validate Binary Search Tree
        • 99. Recover Binary Search Tree
        • 100. Same Tree
      • 101-200
        • 101. Symmetric Tree
        • 102. Binary Tree Level Order Traversal
        • 103. Binary Tree Zigzag Level Order Traversal
        • 104. Maximum Depth of Binary Tree
        • 105. Construct Binary Tree from Preorder and Inorder Traversal
        • 106. Construct Binary Tree from Inorder and Postorder Traversal
        • 107. Binary Tree Level Order Traversal II
        • 108. Convert Sorted Array to Binary Search Tree
        • 109. Convert Sorted List to Binary Search Tree
        • 110. Balanced Binary Tree
        • 111. Minimum Depth of Binary Tree
        • 112. Path Sum
        • 113. Path Sum II
        • 114. Flatten Binary Tree to Linked List
        • 115. Distinct Subsequences
        • 116. Populating Next Right Pointers in Each Node
        • 117. Populating Next Right Pointers in Each Node II
        • 118. Pascal's Triangle
        • 119. Pascal's Triangle II
        • 120. Triangle
        • 121. Best Time to Buy and Sell Stock
        • 122. Best Time to Buy and Sell Stock II
        • 123. Best Time to Buy and Sell Stock III
        • 124. Binary Tree Maximum Path Sum
        • 125. Valid Palindrome
        • 126. Word Ladder II
        • 127. Word Ladder
        • 128. Longest Consecutive Sequence
        • 129. Sum Root to Leaf Numbers
        • 130. Surrounded Regions
        • 131. Palindrome Partitioning
        • 132. Palindrome Partitioning II
        • 133. Clone Graph
        • 134. Gas Station
        • 135. Candy
        • 136. Single Number
        • 137. Single Number II
        • 138. Copy List with Random Pointer
        • 139. Word Break
        • 140. Word Break II
        • 141. Linked List Cycle
        • 142. Linked List Cycle II
        • 143. Reorder List
        • 144. Binary Tree Preorder Traversal
        • 145. Binary Tree Postorder Traversal
        • 146. LRU Cache
        • 147. Insertion Sort List
        • 148. Sort List
        • 149. Max Points on a Line
        • 150. Evaluate Reverse Polish Notation
        • 151. Reverse Words in a String
        • 152. Maximum Product Subarray
        • 153. Find Minimum in Rotated Sorted Array
        • 154. Find Minimum in Rotated Sorted Array II
        • 155. Min Stack
        • 156. Binary Tree Upside Down
        • 157. Read N Characters Given Read4
        • 158. Read N Characters Given Read4 II - Call multiple times
        • 159. Longest Substring with At Most Two Distinct Characters
        • 160. Intersection of Two Linked Lists
        • 161. One Edit Distance
        • 162. Find Peak Element
        • 163. Missing Ranges
        • 164. Maximum Gap
        • 165. Compare Version Numbers
        • 166. Fraction to Recurring Decimal
        • 167. Two Sum II - Input array is sorted
        • 168. Excel Sheet Column Title
        • 169. Majority Element
        • 170. Two Sum III - Data structure design
        • 171. Excel Sheet Column Number
        • 172. Factorial Trailing Zeroes
        • 173. Binary Search Tree Iterator
        • 175. Combine Two Tables
        • 176. Second Highest Salary
        • 177. Nth Highest Salary
        • 178. Rank Scores
        • 179. Largest Number
        • 180. Consecutive Numbers
        • 181. Employees Earning More Than Their Managers
        • 182. Duplicate Emails
        • 183. Customers Who Never Order
        • 184. Department Highest Salary
        • 185. Department Top Three Salaries
        • 186. Reverse Words in a String II
        • 187. Repeated DNA Sequences
        • 188. Best Time to Buy and Sell Stock IV
        • 189. Rotate Array
        • 190. Reverse Bits
        • 191. Number of 1 Bits
        • 192. Word Frequency
        • 193. Valid Phone Numbers
        • 194. Transpose File
        • 195. Tenth Line
        • 196. Delete Duplicate Emails
        • 197. Rising Temperature
        • 198. House Robber
        • 199. Binary Tree Right Side View
        • 200. Number of Islands
      • 201-300
        • 201. Bitwise AND of Numbers Range
        • 202. Happy Number
        • 203. Remove Linked List Elements
        • 204. Count Primes
        • 205. Isomorphic Strings
        • 206. Reverse Linked List
        • 207. Course Schedule
        • 208. Implement Trie (Prefix Tree)
        • 209. Minimum Size Subarray Sum
        • 210. Course Schedule II
        • 211. Design Add and Search Words Data Structure
        • 212. Word Search II
        • 213. House Robber II
        • 214. Shortest Palindrome
        • 215. Kth Largest Element in an Array
        • 216. Combination Sum III
        • 217. Contains Duplicate
        • 219. Contains Duplicate II
        • 220. Contains Duplicate III
        • 221. Maximal Square
        • 222. Count Complete Tree Nodes
        • 223. Rectangle Area
        • 224. Basic Calculator
        • 226. Invert Binary Tree
        • 234. Palindrome Linked List
        • 235. Lowest Common Ancestor of a Binary Search Tree
        • 236. Lowest Common Ancestor of a Binary Tree
        • 238. Product of Array Except Self
        • 240. Search a 2D Matrix II
        • 246. Strobogrammatic Number
        • 252. Meeting Rooms
        • 253. Meeting Rooms II
        • 257. Binary Tree Paths
        • 268. Missing Number
        • 273. Integer to English Words
        • 279. Perfect Squares
        • 285. Inorder Successor in BST
        • 289. Game of Life
        • 295. Find Median from Data Stream
        • 300. Longest Increasing Subsequence
      • 301-400
        • 304. Range Sum Query 2D - Immutable
        • 316. Remove Duplicate Letters
        • 318. Maximum Product of Word Lengths
        • 322. Coin Change
        • 323. Number of Connected Components in an Undirected Graph
        • 326. Power of Three
        • 329. Longest Increasing Path in a Matrix
        • 341. Flatten Nested List Iterator
        • 365. Water and Jug Problem
        • 376. Wiggle Subsequence
        • 377. Combination Sum IV
        • 384. Shuffle an Array
        • 387. First Unique Character in a String
      • 401-500
        • 402. Remove K Digits
        • 413. Arithmetic Slices
        • 417. Pacific Atlantic Water Flow
        • 423. Reconstruct Original Digits from English
        • 449. Serialize and Deserialize BST
        • 450. Delete Node in a BST
        • 452. Minimum Number of Arrows to Burst Balloons
        • 456. 132 Pattern
        • 462. Minimum Moves to Equal Array Elements II
        • 473. Matchsticks to Square
        • 478. Generate Random Point in a Circle
        • 482. License Key Formatting
        • 496. Next Greater Element I
      • 501-600
        • 503. Next Greater Element II
        • 509. Fibonacci Number
        • 524. Longest Word in Dictionary through Deleting
        • 535. Encode and Decode TinyURL
        • 536. Construct Binary Tree from String
        • 543. Diameter of Binary Tree
        • 545. Boundary of Binary Tree
        • 554. Brick Wall
        • 567. Permutation in String
        • 572. Subtree of Another Tree
        • 575. Distribute Candies
        • 581. Shortest Unsorted Continuous Subarray
        • 582. Kill Process
        • 583. Delete Operation for Two Strings
        • 589. N-ary Tree Preorder Traversal
      • 601-700
        • 609. Find Duplicate File in System
        • 611. Valid Triangle Number
        • 617. Merge Two Binary Trees
        • 621. Task Scheduler
        • 622. Design Circular Queue
        • 623. Add One Row to Tree
        • 630. Course Schedule III
        • 637. Average of Levels in Binary Tree
        • 645. Set Mismatch
        • 655. Print Binary Tree
        • 658. Find K Closest Elements
        • 665. Non-decreasing Array
        • 667. Beautiful Arrangement II
        • 695. Max Area of Island
      • 701-800
        • 702. Search in a Sorted Array of Unknown Size
        • 706. Design HashMap
        • 714. Best Time to Buy and Sell Stock with Transaction Fee
        • 718. Maximum Length of Repeated Subarray
        • 723. Candy Crush
        • 729. My Calendar I
        • 733. Flood Fill
        • 735. Asteroid Collision
        • 746. Min Cost Climbing Stairs
        • 759. Employee Free Time
        • 775. Global and Local Inversions
        • 784. Letter Case Permutation
        • 745. Prefix and Suffix Search
        • 791. Custom Sort String
      • 801-900
        • 814. Binary Tree Pruning
        • 816. Ambiguous Coordinates
        • 820. Short Encoding of Words
        • 821. Shortest Distance to a Character
        • 823. Binary Trees With Factors
        • 841. Keys and Rooms
        • 856. Score of Parentheses
        • 859. Buddy Strings
        • 869. Reordered Power of 2
        • 870. Advantage Shuffle
        • 871. Minimum Number of Refueling Stops
        • 887. Super Egg Drop
      • 901-1000
        • 901. Online Stock Span
        • 904. Fruit Into Baskets
        • 915. Partition Array into Disjoint Intervals
        • 916. Word Subsets
        • 923. 3Sum With Multiplicity
        • 929. Unique Email Addresses
        • 946. Validate Stack Sequences
        • 948. Bag of Tokens
        • 953. Verifying an Alien Dictionary
        • 968. Binary Tree Cameras
        • 970. Powerful Integers
        • 975. Odd Even Jump
        • 986. Interval List Intersections
        • 991. Broken Calculator
        • 994. Rotting Oranges
      • 1001-1100
        • 1007. Minimum Domino Rotations For Equal Row
        • 1026. Maximum Difference Between Node and Ancestor
        • 1048. Longest String Chain
      • 1101-1200
        • 1143. Longest Common Subsequence
        • 1151. Minimum Swaps to Group All 1's Together
        • 1165. Single-Row Keyboard
        • 1167. Minimum Cost to Connect Sticks
        • 1182. Shortest Distance to Target Color
        • 1198. Find Smallest Common Element in All Rows
      • 1201-1300
        • 1209. Remove All Adjacent Duplicates in String II
        • 1228. Missing Number In Arithmetic Progression
        • 1229. Meeting Scheduler
        • 1235. Maximum Profit in Job Scheduling
        • 1239. Maximum Length of a Concatenated String with Unique Characters
        • 1249. Minimum Remove to Make Valid Parentheses
        • 1275. Find Winner on a Tic Tac Toe Game
        • 1290. Convert Binary Number in a Linked List to Integer
      • 1301-1400
        • 1302. Deepest Leaves Sum
        • 1332. Remove Palindromic Subsequences
        • 1337. The K Weakest Rows in a Matrix
        • 1354. Construct Target Array With Multiple Sums
        • 1396. Design Underground System
      • 1401-1500
        • 1423. Maximum Points You Can Obtain from Cards
        • 1428. Leftmost Column with at Least a One
        • 1461. Check If a String Contains All Binary Codes of Size K
        • 1464. Maximum Product of Two Elements in an Array
        • 1480. Running Sum of 1d Array
        • 1492. The kth Factor of n
      • 1501-1600
        • 1551. Minimum Operations to Make Array Equal
        • 1564. Put Boxes Into the Warehouse I
      • 1601-1700
        • 1642. Furthest Building You Can Reach
        • 1644. Lowest Common Ancestor of a Binary Tree II
        • 1650. Lowest Common Ancestor of a Binary Tree III
        • 1676. Lowest Common Ancestor of a Binary Tree IV
        • 1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
      • 1701-1800
        • 1704. Determine if String Halves Are Alike
        • 1721. Swapping Nodes in a Linked List
      • 1801-1900
        • 1848. Minimum Distance to the Target Element
        • 1870. Minimum Speed to Arrive on Time
      • 1901-2000
      • 2001-2100
        • 2006. Count Number of Pairs With Absolute Difference K
      • 2101-2200
  • Other
    • Template
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  1. leetcode
  2. Problems

101-200

LEETCODE

Previous100. Same TreeNext101. Symmetric Tree

Last updated 4 years ago

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101. Symmetric Tree
102. Binary Tree Level Order Traversal
103. Binary Tree Zigzag Level Order Traversal
104. Maximum Depth of Binary Tree
105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal
107. Binary Tree Level Order Traversal II
108. Convert Sorted Array to Binary Search Tree
109. Convert Sorted List to Binary Search Tree
110. Balanced Binary Tree
111. Minimum Depth of Binary Tree
112. Path Sum
113. Path Sum II
114. Flatten Binary Tree to Linked List
115. Distinct Subsequences
116. Populating Next Right Pointers in Each Node
117. Populating Next Right Pointers in Each Node II
118. Pascal's Triangle
119. Pascal's Triangle II
120. Triangle
121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II
123. Best Time to Buy and Sell Stock III
124. Binary Tree Maximum Path Sum
125. Valid Palindrome
126. Word Ladder II
127. Word Ladder
128. Longest Consecutive Sequence
129. Sum Root to Leaf Numbers
130. Surrounded Regions
131. Palindrome Partitioning
132. Palindrome Partitioning II
133. Clone Graph
134. Gas Station
135. Candy
136. Single Number
137. Single Number II
138. Copy List with Random Pointer
139. Word Break
140. Word Break II
141. Linked List Cycle
142. Linked List Cycle II
143. Reorder List
144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal
146. LRU Cache
147. Insertion Sort List
148. Sort List
149. Max Points on a Line
150. Evaluate Reverse Polish Notation
151. Reverse Words in a String
152. Maximum Product Subarray
153. Find Minimum in Rotated Sorted Array
154. Find Minimum in Rotated Sorted Array II
155. Min Stack
156. Binary Tree Upside Down
157. Read N Characters Given Read4
158. Read N Characters Given Read4 II - Call multiple times
159. Longest Substring with At Most Two Distinct Characters
160. Intersection of Two Linked Lists
161. One Edit Distance
162. Find Peak Element
163. Missing Ranges
164. Maximum Gap
165. Compare Version Numbers
166. Fraction to Recurring Decimal
167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title
169. Majority Element
170. Two Sum III - Data structure design
171. Excel Sheet Column Number
172. Factorial Trailing Zeroes
173. Binary Search Tree Iterator
175. Combine Two Tables
176. Second Highest Salary
177. Nth Highest Salary
178. Rank Scores
179. Largest Number
180. Consecutive Numbers
181. Employees Earning More Than Their Managers
182. Duplicate Emails
183. Customers Who Never Order
184. Department Highest Salary
185. Department Top Three Salaries
186. Reverse Words in a String II
187. Repeated DNA Sequences
188. Best Time to Buy and Sell Stock IV
189. Rotate Array
190. Reverse Bits
191. Number of 1 Bits
192. Word Frequency
193. Valid Phone Numbers
194. Transpose File
195. Tenth Line
196. Delete Duplicate Emails
197. Rising Temperature
198. House Robber
199. Binary Tree Right Side View
200. Number of Islands