Dashboard Questions Topics Companies Sheets

Amazon Interview Questions

1,113 coding problems asked in Amazon interviews. Prepare for your technical interview with real questions.

1,113

Problems

267

Easy

645

Medium

201

Hard

Difficulty

All1113 Easy267 Medium645 Hard201

Title	Solve	Difficulty	Companies	Topics
325. Maximum Size Subarray Sum Equals k	Solve	Medium	Amazon+1	Array Hash Table+1
326. Power of Three	Solve	Easy	Amazon	Math Recursion
327. Count of Range Sum	Solve	Hard	Adobe+2	Array Binary Indexed Tree+5
328. Odd Even Linked List	Solve	Medium	Adobe+4	Linked List
329. Longest Increasing Path in a Matrix	Solve	Hard	Amazon+14	Array Breadth-First Search+6
330. Patching Array	Solve	Hard	Amazon	Array Greedy
332. Reconstruct Itinerary	Solve	Hard	Amazon+9	Depth-First Search Eulerian Circuit+1
335. Self Crossing	Solve	Hard	Amazon+1	Array Geometry+1
337. House Robber III	Solve	Medium	Adobe+2	Binary Tree Depth-First Search+2
338. Counting Bits	Solve	Easy	Adobe+33	Bit Manipulation Dynamic Programming
339. Nested List Weight Sum	Solve	Medium	Amazon+2	Breadth-First Search Depth-First Search
340. Longest Substring with At Most K Distinct Characters	Solve	Medium	Amazon+1	Hash Table Sliding Window+1
341. Flatten Nested List Iterator	Solve	Medium	Airbnb+10	Depth-First Search Design+4
342. Power of Four	Solve	Easy	Adobe+4	Bit Manipulation Math+1
343. Integer Break	Solve	Medium	Adobe+12	Dynamic Programming Math
344. Reverse String	Solve	Easy	Adobe+6	String Two Pointers
346. Moving Average from Data Stream	Solve	Easy	Amazon+3	Array Data Stream+2
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
355. Design Twitter	Solve	Medium	Amazon+2	Design Hash Table+2
359. Logger Rate Limiter	Solve	Easy	Amazon+5	Data Stream Design+1
362. Design Hit Counter	Solve	Medium	Affirm+7	Array Binary Search+3
366. Find Leaves of Binary Tree	Solve	Medium	Amazon+4	Binary Tree Depth-First Search+1
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)
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
382. Linked List Random Node	Solve	Medium	Amazon+2	Linked List Math+2
386. Lexicographical Numbers	Solve	Medium	Amazon+6	Depth-First Search Trie
387. First Unique Character in a String	Solve	Easy	Amazon+8	Counting Hash Table+2
388. Longest Absolute File Path	Solve	Medium	Amazon+1	Depth-First Search Stack+1
389. Find the Difference	Solve	Easy	Adobe+4	Bit Manipulation Hash Table+2
392. Is Subsequence	Solve	Easy	Accolite+15	Dynamic Programming String+1
394. Decode String	Solve	Medium	Adobe+16	Recursion Stack+1
395. Longest Substring with At Least K Repeating Characters	Solve	Medium	Amazon+1	Divide and Conquer Hash Table+2
396. Rotate Function	Solve	Medium	Amazon+2	Array Dynamic Programming+1
398. Random Pick Index	Solve	Medium	Amazon+2	Hash Table Math+2
399. Evaluate Division	Solve	Medium	Adobe+8	Array Breadth-First Search+5
402. Remove K Digits	Solve	Medium	Adobe+6	Greedy Monotonic Stack+2
403. Frog Jump	Solve	Hard	Adobe+21	Array Dynamic Programming
404. Sum of Left Leaves	Solve	Easy	Adobe+6	Binary Tree Breadth-First Search+2
405. Convert a Number to Hexadecimal	Solve	Easy	Amazon+1	Bit Manipulation Math
409. Longest Palindrome	Solve	Easy	Amazon	Greedy Hash Table+1
410. Split Array Largest Sum	Solve	Hard	Amazon+5	Array Binary Search+3
413. Arithmetic Slices	Solve	Medium	Amazon+1	Array Dynamic Programming+1