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
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
384. Shuffle an Array	Solve	Medium	Apple+4	Array Design+2
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
406. Queue Reconstruction by Height	Solve	Medium	Facebook	Array Binary Indexed Tree+2
413. Arithmetic Slices	Solve	Medium	Amazon+1	Array Dynamic Programming+1
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
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
447. Number of Boomerangs	Solve	Medium	Google	Array Hash Table+1
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
456. 132 Pattern	Solve	Medium	Amazon+1	Array Binary Search+3
457. Circular Array Loop	Solve	Medium	Goldman Sachs	Array Hash Table+1
462. Minimum Moves to Equal Array Elements II	Solve	Medium	Microsoft	Array Math+1
469. Convex Polygon	Solve	Medium	Google	Array Geometry+1
473. Matchsticks to Square	Solve	Medium	Microsoft	Array Backtracking+3
474. Ones and Zeroes	Solve	Medium	Apple	Array Dynamic Programming+1
475. Heaters	Solve	Medium	Amazon+1	Array Binary Search+2
477. Total Hamming Distance	Solve	Medium	Adobe+1	Array Bit Manipulation+1
484. Find Permutation	Solve	Medium	Goldman Sachs+1	Array Greedy+2
486. Predict the Winner	Solve	Medium	Amazon+4	Array Dynamic Programming+3
487. Max Consecutive Ones II	Solve	Medium	Microsoft+1	Array Dynamic Programming+1
490. The Maze	Solve	Medium	Amazon+6	Array Breadth-First Search+2
491. Non-decreasing Subsequences	Solve	Medium	Amazon+1	Array Backtracking+2
494. Target Sum	Solve	Medium	Adobe+4	Array Backtracking+1
497. Random Point in Non-overlapping Rectangles	Solve	Medium	Google	Array Binary Search+5
498. Diagonal Traverse	Solve	Medium	Facebook+2	Array Matrix+1
503. Next Greater Element II	Solve	Medium	Adobe+9	Array Monotonic Stack+1
505. The Maze II	Solve	Medium	Bytedance+2	Array Breadth-First Search+5
518. Coin Change II	Solve	Medium	Accenture+68	Array Dynamic Programming
522. Longest Uncommon Subsequence II	Solve	Medium	Apple	Array Hash Table+3
523. Continuous Subarray Sum	Solve	Medium	Amazon+6	Array Hash Table+2
524. Longest Word in Dictionary through Deleting	Solve	Medium	Google	Array Sorting+2
525. Contiguous Array	Solve	Medium	Amazon+3	Array Hash Table+1
526. Beautiful Arrangement	Solve	Medium	Cisco	Array Backtracking+3