Dashboard Questions Topics Companies Sheets

Uber Interview Questions

261 coding problems asked in Uber interviews. Prepare for your technical interview with real questions.

261

Problems

Easy

133

Medium

Hard

Difficulty

All261 Easy56 Medium133 Hard72

Title	Solve	Difficulty	Companies	Topics
143. Reorder List	Solve	Medium	Adobe+6	Linked List Recursion+2
146. LRU Cache	Solve	Medium	Accolite+56	Design Doubly-Linked List+2
153. Find Minimum in Rotated Sorted Array	Solve	Medium	Adobe+6	Array Binary Search
162. Find Peak Element	Solve	Medium	Amazon+8	Array Binary Search
169. Majority Element	Solve	Easy	Adobe+8	Array Counting+3
174. Dungeon Game	Solve	Hard	Amazon+1	Array Dynamic Programming+1
178. Rank Scores	Solve	Medium	Adobe+4	Database
180. Consecutive Numbers	Solve	Medium	Adobe+4	Database
181. Employees Earning More Than Their Managers	Solve	Easy	Amazon+7	Database
182. Duplicate Emails	Solve	Easy	Adobe+2	Database
185. Department Top Three Salaries	Solve	Hard	Amazon+4	Database
196. Delete Duplicate Emails	Solve	Easy	Amazon+3	Database
197. Rising Temperature	Solve	Easy	Adobe+5	Database
199. Binary Tree Right Side View	Solve	Medium	Amazon+8	Binary Tree Breadth-First Search+2
200. Number of Islands	Solve	Medium	Adobe+40	Array Breadth-First Search+3
202. Happy Number	Solve	Easy	Adobe+5	Hash Table Math+1
207. Course Schedule	Solve	Medium	Amazon+8	Breadth-First Search Depth-First Search+2
210. Course Schedule II	Solve	Medium	Amazon+14	Breadth-First Search Depth-First Search+2
212. Word Search II	Solve	Hard	Amazon+9	Array Backtracking+3
215. Kth Largest Element in an Array	Solve	Medium	ABCO+44	Array Divide and Conquer+3
217. Contains Duplicate	Solve	Easy	Adobe+8	Array Hash Table+1
218. The Skyline Problem	Solve	Hard	Cruise Automation+3	Array Binary Indexed Tree+5
219. Contains Duplicate II	Solve	Easy	Adobe+6	Array Hash Table+1
224. Basic Calculator	Solve	Hard	Adobe+8	Math Recursion+2
226. Invert Binary Tree	Solve	Easy	Amazon+5	Binary Tree Breadth-First Search+2
227. Basic Calculator II	Solve	Medium	Amazon+9	Math Stack+1
230. Kth Smallest Element in a BST	Solve	Medium	Amazon+4	Binary Search Tree Binary Tree+2
238. Product of Array Except Self	Solve	Medium	Adobe+8	Array Prefix Sum
239. Sliding Window Maximum	Solve	Hard	Accion Labs India+66	Array Heap (Priority Queue)+3
246. Strobogrammatic Number	Solve	Easy	Facebook+1	Hash Table String+1
247. Strobogrammatic Number II	Solve	Medium	Facebook+2	Array Recursion+1
253. Meeting Rooms II	Solve	Medium	Amazon+8	Array Greedy+4
262. Trips and Users	Solve	Hard	Adobe+3	Database
269. Alien Dictionary	Solve	Hard	Airbnb+8	Array Breadth-First Search+4
283. Move Zeroes	Solve	Easy	Adobe+11	Array Two Pointers
287. Find the Duplicate Number	Solve	Medium	Adobe+30	Array Binary Search+2
290. Word Pattern	Solve	Easy	Adobe+3	Hash Table String
291. Word Pattern II	Solve	Medium	Bolt+2	Backtracking Hash Table+1
295. Find Median from Data Stream	Solve	Hard	Adobe+33	Data Stream Design+3
297. Serialize and Deserialize Binary Tree	Solve	Hard	Amazon+8	Binary Tree Breadth-First Search+4
300. Longest Increasing Subsequence	Solve	Medium	Accenture+78	Array Binary Search+1
305. Number of Islands II	Solve	Hard	Google+1	Array Hash Table+1
312. Burst Balloons	Solve	Hard	Amazon+5	Array Dynamic Programming
329. Longest Increasing Path in a Matrix	Solve	Hard	Amazon+14	Array Breadth-First Search+6
332. Reconstruct Itinerary	Solve	Hard	Amazon+9	Depth-First Search Eulerian Circuit+1
341. Flatten Nested List Iterator	Solve	Medium	Airbnb+10	Depth-First Search Design+4
343. Integer Break	Solve	Medium	Adobe+12	Dynamic Programming Math
347. Top K Frequent Elements	Solve	Medium	Adobe+9	Array Bucket Sort+6
361. Bomb Enemy	Solve	Medium	Uber	Array Dynamic Programming+1
362. Design Hit Counter	Solve	Medium	Affirm+7	Array Binary Search+3