Dashboard Questions Topics Companies Sheets

Array

Topic

1,779 coding problems covering Array concepts. Master this topic and improve your problem-solving skills.

1,779

Problems

370

Easy

963

Medium

446

Hard

Difficulty

All1779 Easy370 Medium963 Hard446

Title	Solve	Difficulty	Companies	Topics
204. Count Primes	Solve	Medium	Adobe+6	Array Enumeration+2
209. Minimum Size Subarray Sum	Solve	Medium	Amazon+7	Array Binary Search+2
213. House Robber II	Solve	Medium	Amazon+1	Array Dynamic Programming
215. Kth Largest Element in an Array	Solve	Medium	ABCO+44	Array Divide and Conquer+3
216. Combination Sum III	Solve	Medium	Google	Array Backtracking
221. Maximal Square	Solve	Medium	Amazon+7	Array Dynamic Programming+1
229. Majority Element II	Solve	Medium	Accolite+21	Array Counting+2
238. Product of Array Except Self	Solve	Medium	Adobe+8	Array Prefix Sum
240. Search a 2D Matrix II	Solve	Medium	Amazon+5	Array Binary Search+2
244. Shortest Word Distance II	Solve	Medium	LinkedIn	Array Design+3
245. Shortest Word Distance III	Solve	Medium	Amazon+1	Array String
247. Strobogrammatic Number II	Solve	Medium	Facebook+2	Array Recursion+1
249. Group Shifted Strings	Solve	Medium	Facebook+1	Array Hash Table+1
251. Flatten 2D Vector	Solve	Medium	Airbnb	Array Design+2
253. Meeting Rooms II	Solve	Medium	Amazon+8	Array Greedy+4
255. Verify Preorder Sequence in Binary Search Tree	Solve	Medium	Oracle+2	Array Binary Search Tree+5
256. Paint House	Solve	Medium	Amazon+2	Array Dynamic Programming
259. 3Sum Smaller	Solve	Medium	Apple+2	Array Binary Search+2
260. Single Number III	Solve	Medium	Google	Array Bit Manipulation
271. Encode and Decode Strings	Solve	Medium	Facebook+1	Array Design+1
274. H-Index	Solve	Medium	Alation+4	Array Counting Sort+1
275. H-Index II	Solve	Medium	Goldman Sachs	Array Binary Search
280. Wiggle Sort	Solve	Medium	Amazon+2	Array Greedy+1
281. Zigzag Iterator	Solve	Medium	Amazon+3	Array Design+2
284. Peeking Iterator	Solve	Medium	Amazon+3	Array Design+1
286. Walls and Gates	Solve	Medium	Amazon+6	Array Breadth-First Search+1
287. Find the Duplicate Number	Solve	Medium	Adobe+30	Array Binary Search+2
288. Unique Word Abbreviation	Solve	Medium	Facebook+1	Array Design+2
289. Game of Life	Solve	Medium	Adobe+8	Array Matrix+1
300. Longest Increasing Subsequence	Solve	Medium	Accenture+78	Array Binary Search+1
304. Range Sum Query 2D - Immutable	Solve	Medium	Amazon+4	Array Design+2
307. Range Sum Query - Mutable	Solve	Medium	Amazon+1	Array Binary Indexed Tree+2
308. Range Sum Query 2D - Mutable	Solve	Medium	Google	Array Binary Indexed Tree+3
309. Best Time to Buy and Sell Stock with Cooldown	Solve	Medium	Adobe+5	Array Dynamic Programming
311. Sparse Matrix Multiplication	Solve	Medium	Amazon+3	Array Hash Table+1
313. Super Ugly Number	Solve	Medium	Apple+2	Array Dynamic Programming+1
318. Maximum Product of Word Lengths	Solve	Medium	Bloomberg	Array Bit Manipulation+1
322. Coin Change	Solve	Medium	Amazon+7	Array Breadth-First Search+1
324. Wiggle Sort II	Solve	Medium	Adobe	Array Divide and Conquer+3
325. Maximum Size Subarray Sum Equals k	Solve	Medium	Amazon+1	Array Hash Table+1
334. Increasing Triplet Subsequence	Solve	Medium	Facebook+1	Array Greedy
347. Top K Frequent Elements	Solve	Medium	Adobe+9	Array Bucket Sort+6
348. Design Tic-Tac-Toe	Solve	Medium	Adobe+4	Array Design+3
353. Design Snake Game	Solve	Medium	Amazon+6	Array Design+3
356. Line Reflection	Solve	Medium	Yandex	Array Hash Table+1
360. Sort Transformed Array	Solve	Medium	LinkedIn	Array Math+2
361. Bomb Enemy	Solve	Medium	Uber	Array Dynamic Programming+1
362. Design Hit Counter	Solve	Medium	Affirm+7	Array Binary Search+3
368. Largest Divisible Subset	Solve	Medium	Google	Array Dynamic Programming+2
370. Range Addition	Solve	Medium	Amazon+1	Array Prefix Sum