0100–0199

Problems in this range: 100

• 100. Same Tree
• 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
• 174. Dungeon Game
• 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