Dashboard Questions Topics Companies Sheets

Apple Interview Questions

390 coding problems asked in Apple interviews. Prepare for your technical interview with real questions.

390

Problems

125

Easy

194

Medium

Hard

Difficulty

All390 Easy125 Medium194 Hard71

Title	Solve	Difficulty	Companies	Topics
396. Rotate Function	Solve	Medium	Amazon+2	Array Dynamic Programming+1
400. Nth Digit	Solve	Medium	Apple	Binary Search Math
416. Partition Equal Subset Sum	Solve	Medium	Amazon+5	Array Dynamic Programming
419. Battleships in a Board	Solve	Medium	Amazon+6	Array Depth-First Search+1
433. Minimum Genetic Mutation	Solve	Medium	Amazon+4	Breadth-First Search Hash Table+1
438. Find All Anagrams in a String	Solve	Medium	Adobe+9	Hash Table Sliding Window+1
442. Find All Duplicates in an Array	Solve	Medium	Adobe+4	Array Hash Table
443. String Compression	Solve	Medium	Amazon+8	String Two Pointers
445. Add Two Numbers II	Solve	Medium	Accenture+49	Linked List Math+1
451. Sort Characters By Frequency	Solve	Medium	Amazon+4	Bucket Sort Counting+4
467. Unique Substrings in Wraparound String	Solve	Medium	Apple+1	Dynamic Programming String
474. Ones and Zeroes	Solve	Medium	Apple	Array Dynamic Programming+1
503. Next Greater Element II	Solve	Medium	Adobe+9	Array Monotonic Stack+1
508. Most Frequent Subtree Sum	Solve	Medium	Apple	Binary Tree Depth-First Search+2
515. Find Largest Value in Each Tree Row	Solve	Medium	Amazon+5	Binary Tree Breadth-First Search+2
516. Longest Palindromic Subsequence	Solve	Medium	Amazon+5	Dynamic Programming String
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
525. Contiguous Array	Solve	Medium	Amazon+3	Array Hash Table+1
528. Random Pick with Weight	Solve	Medium	Amazon+7	Array Binary Search+3
532. K-diff Pairs in an Array	Solve	Medium	Adobe+7	Array Binary Search+3
540. Single Element in a Sorted Array	Solve	Medium	Amazon+5	Array Binary Search
542. 01 Matrix	Solve	Medium	Adobe+16	Array Breadth-First Search+2
556. Next Greater Element III	Solve	Medium	Adobe+10	Math String+1
560. Subarray Sum Equals K	Solve	Medium	Adobe+15	Array Hash Table+1
565. Array Nesting	Solve	Medium	Adobe+1	Array Depth-First Search
567. Permutation in String	Solve	Medium	Amazon+7	Hash Table Sliding Window+2
570. Managers with at Least 5 Direct Reports	Solve	Medium	Adobe+7	Database
609. Find Duplicate File in System	Solve	Medium	Apple+1	Array Hash Table+1
622. Design Circular Queue	Solve	Medium	Airbnb+5	Array Design+2
638. Shopping Offers	Solve	Medium	Amazon+3	Array Backtracking+4
690. Employee Importance	Solve	Medium	Apple+1	Array Breadth-First Search+3
692. Top K Frequent Words	Solve	Medium	Amazon+8	Bucket Sort Counting+5
695. Max Area of Island	Solve	Medium	Amazon+8	Array Breadth-First Search+3
714. Best Time to Buy and Sell Stock with Transaction Fee	Solve	Medium	Adobe+4	Array Dynamic Programming+1
721. Accounts Merge	Solve	Medium	Amazon+6	Array Breadth-First Search+5
722. Remove Comments	Solve	Medium	Apple+7	Array String
725. Split Linked List in Parts	Solve	Medium	Amazon+3	Linked List
787. Cheapest Flights Within K Stops	Solve	Medium	Airbnb+15	Breadth-First Search Depth-First Search+4
797. All Paths From Source to Target	Solve	Medium	Adobe+7	Backtracking Breadth-First Search+2
814. Binary Tree Pruning	Solve	Medium	Apple+1	Binary Tree Depth-First Search+1
823. Binary Trees With Factors	Solve	Medium	Amazon+2	Array Dynamic Programming+2
852. Peak Index in a Mountain Array	Solve	Medium	Accolite+22	Array Binary Search
853. Car Fleet	Solve	Medium	Amazon+5	Array Monotonic Stack+2
863. All Nodes Distance K in Binary Tree	Solve	Medium	Amazon+18	Binary Tree Breadth-First Search+3
869. Reordered Power of 2	Solve	Medium	Adobe+4	Counting Enumeration+3
881. Boats to Save People	Solve	Medium	Amazon+6	Array Greedy+2
890. Find and Replace Pattern	Solve	Medium	Apple	Array Hash Table+1
894. All Possible Full Binary Trees	Solve	Medium	Adobe+6	Binary Tree Dynamic Programming+3