Dashboard Questions Topics Companies Sheets

Facebook Interview Questions

524 coding problems asked in Facebook interviews. Prepare for your technical interview with real questions.

524

Problems

139

Easy

302

Medium

Hard

Difficulty

All524 Easy139 Medium302 Hard83

Title	Solve	Difficulty	Companies	Topics
515. Find Largest Value in Each Tree Row	Solve	Medium	Amazon+5	Binary Tree Breadth-First Search+2
518. Coin Change II	Solve	Medium	Accenture+68	Array Dynamic Programming
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
529. Minesweeper	Solve	Medium	Amazon+6	Array Breadth-First Search+2
536. Construct Binary Tree from String	Solve	Medium	Facebook	Binary Tree Depth-First Search+3
538. Convert BST to Greater Tree	Solve	Medium	Amazon+2	Binary Search Tree Binary Tree+2
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
545. Boundary of Binary Tree	Solve	Medium	Amazon+3	Binary Tree Depth-First Search+1
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
578. Get Highest Answer Rate Question	Solve	Medium	Facebook	Database
602. Friend Requests II: Who Has the Most Friends	Solve	Medium	Amazon+1	Database
606. Construct String from Binary Tree	Solve	Medium	Adobe+3	Binary Tree Depth-First Search+2
616. Add Bold Tag in String	Solve	Medium	Facebook	Array Hash Table+3
621. Task Scheduler	Solve	Medium	Amazon+4	Array Counting+4
622. Design Circular Queue	Solve	Medium	Airbnb+5	Array Design+2
623. Add One Row to Tree	Solve	Medium	Amazon+2	Binary Tree Breadth-First Search+2
636. Exclusive Time of Functions	Solve	Medium	DoorDash+4	Array Stack
638. Shopping Offers	Solve	Medium	Amazon+3	Array Backtracking+4
647. Palindromic Substrings	Solve	Medium	Expedia+2	Dynamic Programming String+1
648. Replace Words	Solve	Medium	Facebook	Array Hash Table+2
658. Find K Closest Elements	Solve	Medium	Amazon+6	Array Binary Search+4
662. Maximum Width of Binary Tree	Solve	Medium	Amazon+4	Binary Tree Breadth-First Search+2
666. Path Sum IV	Solve	Medium	Alibaba+1	Array Binary Tree+3
669. Trim a Binary Search Tree	Solve	Medium	Amazon+3	Binary Search Tree Binary Tree+2
670. Maximum Swap	Solve	Medium	Amazon+3	Greedy Math
676. Implement Magic Dictionary	Solve	Medium	Facebook+1	Depth-First Search Design+3
678. Valid Parenthesis String	Solve	Medium	Amazon+4	Dynamic Programming Greedy+2
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
708. Insert into a Sorted Circular Linked List	Solve	Medium	Facebook+2	Linked List
713. Subarray Product Less Than K	Solve	Medium	Amazon+2	Array Binary Search+2
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
723. Candy Crush	Solve	Medium	Bloomberg+3	Array Matrix+2
735. Asteroid Collision	Solve	Medium	Amazon+15	Array Simulation+1
739. Daily Temperatures	Solve	Medium	Amazon+7	Array Monotonic Stack+1
742. Closest Leaf in a Binary Tree	Solve	Medium	Facebook	Binary Tree Breadth-First Search+2
750. Number Of Corner Rectangles	Solve	Medium	Facebook	Array Dynamic Programming+2
767. Reorganize String	Solve	Medium	Adobe+17	Counting Greedy+4
779. K-th Symbol in Grammar	Solve	Medium	Adobe+3	Bit Manipulation Math+1
785. Is Graph Bipartite?	Solve	Medium	Bunzo+10	Breadth-First Search Depth-First Search+2
787. Cheapest Flights Within K Stops	Solve	Medium	Airbnb+15	Breadth-First Search Depth-First Search+4
788. Rotated Digits	Solve	Medium	Facebook+1	Dynamic Programming Math
791. Custom Sort String	Solve	Medium	Facebook+1	Hash Table Sorting+1
797. All Paths From Source to Target	Solve	Medium	Adobe+7	Backtracking Breadth-First Search+2
809. Expressive Words	Solve	Medium	Cisco+2	Array String+1