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
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
349. Intersection of Two Arrays	Solve	Easy	Adobe+7	Array Binary Search+3
350. Intersection of Two Arrays II	Solve	Easy	Adobe+4	Array Binary Search+3
353. Design Snake Game	Solve	Medium	Amazon+6	Array Design+3
354. Russian Doll Envelopes	Solve	Hard	Google+1	Array Binary Search+2
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
363. Max Sum of Rectangle No Larger Than K	Solve	Hard	Dunzo	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
373. Find K Pairs with Smallest Sums	Solve	Medium	Amazon+4	Array Heap (Priority Queue)
376. Wiggle Subsequence	Solve	Medium	Bloomberg	Array Dynamic Programming+1
377. Combination Sum IV	Solve	Medium	Adobe+9	Array Dynamic Programming
378. Kth Smallest Element in a Sorted Matrix	Solve	Medium	Adobe+7	Array Binary Search+3
379. Design Phone Directory	Solve	Medium	Amazon+1	Array Design+3
380. Insert Delete GetRandom O(1)	Solve	Medium	Affirm+8	Array Design+3
381. Insert Delete GetRandom O(1) - Duplicates allowed	Solve	Hard	Affirm+2	Array Design+3
384. Shuffle an Array	Solve	Medium	Apple+4	Array Design+2
391. Perfect Rectangle	Solve	Hard	Apple+1	Array Line Sweep
393. UTF-8 Validation	Solve	Medium	Facebook+1	Array Bit Manipulation
396. Rotate Function	Solve	Medium	Amazon+2	Array Dynamic Programming+1
399. Evaluate Division	Solve	Medium	Adobe+8	Array Breadth-First Search+5
403. Frog Jump	Solve	Hard	Adobe+21	Array Dynamic Programming
406. Queue Reconstruction by Height	Solve	Medium	Facebook	Array Binary Indexed Tree+2
407. Trapping Rain Water II	Solve	Hard	Google	Array Breadth-First Search+2
410. Split Array Largest Sum	Solve	Hard	Amazon+5	Array Binary Search+3
411. Minimum Unique Word Abbreviation	Solve	Hard	Google	Array Backtracking+2
413. Arithmetic Slices	Solve	Medium	Amazon+1	Array Dynamic Programming+1
414. Third Maximum Number	Solve	Easy	Amazon+2	Array Sorting
416. Partition Equal Subset Sum	Solve	Medium	Amazon+5	Array Dynamic Programming
417. Pacific Atlantic Water Flow	Solve	Medium	Amazon+3	Array Breadth-First Search+2
418. Sentence Screen Fitting	Solve	Medium	Google	Array Dynamic Programming+1
419. Battleships in a Board	Solve	Medium	Amazon+6	Array Depth-First Search+1
421. Maximum XOR of Two Numbers in an Array	Solve	Medium	Adobe+1	Array Bit Manipulation+2
422. Valid Word Square	Solve	Easy	Bloomberg+1	Array Matrix
425. Word Squares	Solve	Hard	Google	Array Backtracking+2
427. Construct Quad Tree	Solve	Medium	Uber	Array Divide and Conquer+2
435. Non-overlapping Intervals	Solve	Medium	Amazon+7	Array Dynamic Programming+2
436. Find Right Interval	Solve	Medium	Amazon+1	Array Binary Search+1
442. Find All Duplicates in an Array	Solve	Medium	Adobe+4	Array Hash Table
444. Sequence Reconstruction	Solve	Medium	Google	Array Graph+1
446. Arithmetic Slices II - Subsequence	Solve	Hard	Adobe+3	Array Dynamic Programming
447. Number of Boomerangs	Solve	Medium	Google	Array Hash Table+1
448. Find All Numbers Disappeared in an Array	Solve	Easy	Amazon+3	Array Hash Table
452. Minimum Number of Arrows to Burst Balloons	Solve	Medium	Facebook+2	Array Greedy+1
453. Minimum Moves to Equal Array Elements	Solve	Medium	Goldman Sachs+3	Array Math
454. 4Sum II	Solve	Medium	Adobe+3	Array Hash Table