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
509. Fibonacci Number	Solve	Easy	Adobe+8	Dynamic Programming Math+2
511. Game Play Analysis I	Solve	Easy	Adobe+4	Database
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
543. Diameter of Binary Tree	Solve	Easy	Amazon+5	Binary Tree Depth-First Search+1
556. Next Greater Element III	Solve	Medium	Adobe+10	Math String+1
557. Reverse Words in a String III	Solve	Easy	Accolite+27	String Two Pointers
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
584. Find Customer Referee	Solve	Easy	Adobe+5	Database
586. Customer Placing the Largest Number of Orders	Solve	Easy	Adobe+4	Database
595. Big Countries	Solve	Easy	Adobe+6	Database
599. Minimum Index Sum of Two Lists	Solve	Easy	Apple+2	Array Hash Table+1
609. Find Duplicate File in System	Solve	Medium	Apple+1	Array Hash Table+1
610. Triangle Judgement	Solve	Easy	Amazon+1	Database
619. Biggest Single Number	Solve	Easy	Apple	Database
622. Design Circular Queue	Solve	Medium	Airbnb+5	Array Design+2
627. Swap Salary	Solve	Easy	Apple+1	Database
632. Smallest Range Covering Elements from K Lists	Solve	Hard	Adobe+8	Array Greedy+4
638. Shopping Offers	Solve	Medium	Amazon+3	Array Backtracking+4
675. Cut Off Trees for Golf Event	Solve	Hard	Amazon+1	Array Breadth-First Search+2
680. Valid Palindrome II	Solve	Easy	Amazon+6	Greedy String+1
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
704. Binary Search	Solve	Easy	Adobe+8	Array Binary Search
706. Design HashMap	Solve	Easy	Adobe+26	Array Design+3
714. Best Time to Buy and Sell Stock with Transaction Fee	Solve	Medium	Adobe+4	Array Dynamic Programming+1
717. 1-bit and 2-bit Characters	Solve	Easy	Apple	Array
721. Accounts Merge	Solve	Medium	Amazon+6	Array Breadth-First Search+5
722. Remove Comments	Solve	Medium	Apple+7	Array String
724. Find Pivot Index	Solve	Easy	Adobe+8	Array Prefix Sum
725. Split Linked List in Parts	Solve	Medium	Amazon+3	Linked List
726. Number of Atoms	Solve	Hard	Amazon+5	Hash Table Sorting+2
730. Count Different Palindromic Subsequences	Solve	Hard	Apple+3	Dynamic Programming String
733. Flood Fill	Solve	Easy	Adobe+8	Array Breadth-First Search+2
746. Min Cost Climbing Stairs	Solve	Easy	Adobe+9	Array Dynamic Programming
759. Employee Free Time	Solve	Hard	Airbnb+7	Array Heap (Priority Queue)+1
768. Max Chunks To Make Sorted II	Solve	Hard	Adobe+6	Array Greedy+3
772. Basic Calculator III	Solve	Hard	Amazon+12	Math Recursion+2