Bloomberg Interview Questions (1172)

Practice real interview problems from Bloomberg

Title	Solution	Practice	Difficulty	Companies	Topics
216. Combination Sum III	Solution	Solve	Medium	Amazon+3	Array Backtracking
217. Contains Duplicate	Solution	Solve	Easy	Accenture+22	Array Hash Table+1
218. The Skyline Problem	Solution	Solve	Hard	Amazon+13	Array Binary Indexed Tree+5
219. Contains Duplicate II	Solution	Solve	Easy	Accenture+13	Array Hash Table+1
220. Contains Duplicate III	Solution	Solve	Hard	Airbnb+8	Array Bucket Sort+3
221. Maximal Square	Solution	Solve	Medium	Airbnb+29	Array Dynamic Programming+1
222. Count Complete Tree Nodes	Solution	Solve	Easy	Adobe+6	Binary Search Binary Tree+2
223. Rectangle Area	Solution	Solve	Medium	Amazon+5	Geometry Math
224. Basic Calculator	Solution	Solve	Hard	Adobe+23	Math Recursion+2
225. Implement Stack using Queues	Solution	Solve	Easy	Amazon+8	Design Queue+1
226. Invert Binary Tree	Solution	Solve	Easy	Amazon+10	Binary Tree Breadth-First Search+2
227. Basic Calculator II	Solution	Solve	Medium	Adobe+33	Math Stack+1
228. Summary Ranges	Solution	Solve	Easy	Amazon+9	Array
229. Majority Element II	Solution	Solve	Medium	Adobe+10	Array Counting+2
230. Kth Smallest Element in a BST	Solution	Solve	Medium	Amazon+10	Binary Search Tree Binary Tree+2
231. Power of Two	Solution	Solve	Easy	Amazon+11	Bit Manipulation Math+1
232. Implement Queue using Stacks	Solution	Solve	Easy	Amazon+10	Design Queue+1
233. Number of Digit One	Solution	Solve	Hard	Amazon+5	Dynamic Programming Math+1
234. Palindrome Linked List	Solution	Solve	Easy	Adobe+17	Linked List Recursion+2
235. Lowest Common Ancestor of a Binary Search Tree	Solution	Solve	Medium	Amazon+9	Binary Search Tree Binary Tree+2
236. Lowest Common Ancestor of a Binary Tree	Solution	Solve	Medium	Adobe+22	Binary Tree Depth-First Search+1
237. Delete Node in a Linked List	Solution	Solve	Medium	Adobe+8	Linked List
238. Product of Array Except Self	Solution	Solve	Medium	Accenture+43	Array Prefix Sum
239. Sliding Window Maximum	Solution	Solve	Hard	Adobe+47	Array Heap (Priority Queue)+3
240. Search a 2D Matrix II	Solution	Solve	Medium	Amazon+16	Array Binary Search+2
241. Different Ways to Add Parentheses	Solution	Solve	Medium	Amazon+6	Dynamic Programming Math+3
242. Valid Anagram	Solution	Solve	Easy	Accenture+40	Hash Table Sorting+1
250. Count Univalue Subtrees	Solution	Solve	Medium	6Sense+4	Binary Tree Depth-First Search+1
252. Meeting Rooms	Solution	Solve	Easy	Amazon+9	Array Sorting
253. Meeting Rooms II	Solution	Solve	Medium	Adobe+42	Array Greedy+4
257. Binary Tree Paths	Solution	Solve	Easy	Amazon+7	Backtracking Binary Tree+3
258. Add Digits	Solution	Solve	Easy	Adobe+10	Math Number Theory+1
260. Single Number III	Solution	Solve	Medium	Amazon+7	Array Bit Manipulation
262. Trips and Users	Solution	Solve	Hard	Amazon+5	Database
263. Ugly Number	Solution	Solve	Easy	Amazon+6	Math
264. Ugly Number II	Solution	Solve	Medium	Amazon+6	Dynamic Programming Hash Table+2
266. Palindrome Permutation	Solution	Solve	Easy	Apple+7	Bit Manipulation Hash Table+1
268. Missing Number	Solution	Solve	Easy	Adobe+20	Array Binary Search+4
270. Closest Binary Search Tree Value	Solution	Solve	Easy	Amazon+8	Binary Search Binary Search Tree+3
273. Integer to English Words	Solution	Solve	Hard	Amazon+24	Math Recursion+1
274. H-Index	Solution	Solve	Medium	Adobe+10	Array Counting Sort+1
278. First Bad Version	Solution	Solve	Easy	Adobe+6	Binary Search Interactive
279. Perfect Squares	Solution	Solve	Medium	Accenture+11	Breadth-First Search Dynamic Programming+1
282. Expression Add Operators	Solution	Solve	Hard	Amazon+6	Backtracking Math+1
283. Move Zeroes	Solution	Solve	Easy	Accenture+48	Array Two Pointers
286. Walls and Gates	Solution	Solve	Medium	Amazon+11	Array Breadth-First Search+1
287. Find the Duplicate Number	Solution	Solve	Medium	Accenture+22	Array Binary Search+2
289. Game of Life	Solution	Solve	Medium	Acorns+15	Array Matrix+1
290. Word Pattern	Solution	Solve	Easy	Amazon+9	Hash Table String
292. Nim Game	Solution	Solve	Easy	Adobe+5	Brainteaser Game Theory+1