Dashboard Questions Topics Companies Sheets

Data Structures & Algorithms

Practice 3,374+ coding problems from top companies. Master DSA concepts and ace your interviews.

3,374

Problems

840

Easy

1762

Medium

772

Hard

Difficulty

All3374 Easy840 Medium1762 Hard772

Title	Solve	Difficulty	Companies	Topics
701. Insert into a Binary Search Tree	Solve	Medium	Amazon+2	Binary Search Tree Binary Tree+1
702. Search in a Sorted Array of Unknown Size	Solve	Medium	Google+1	Array Binary Search+1
703. Kth Largest Element in a Stream	Solve	Easy	Adobe+4	Binary Search Tree Binary Tree+4
704. Binary Search	Solve	Easy	Adobe+8	Array Binary Search
705. Design HashSet	Solve	Easy	Amazon+6	Array Design+3
706. Design HashMap	Solve	Easy	Adobe+26	Array Design+3
707. Design Linked List	Solve	Medium	Amazon+4	Design Linked List
708. Insert into a Sorted Circular Linked List	Solve	Medium	Facebook+2	Linked List
709. To Lower Case	Solve	Easy	Amazon	String
710. Random Pick with Blacklist	Solve	Hard	Amazon+2	Array Binary Search+4
711. Number of Distinct Islands II	Solve	Hard	Amazon+1	Breadth-First Search Depth-First Search+3
712. Minimum ASCII Delete Sum for Two Strings	Solve	Medium	Activision+2	Dynamic Programming String
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
715. Range Module	Solve	Hard	Amazon+6	Design Ordered Set+1
716. Max Stack	Solve	Hard	Amazon+6	Design Doubly-Linked List+3
717. 1-bit and 2-bit Characters	Solve	Easy	Apple	Array
718. Maximum Length of Repeated Subarray	Solve	Medium	Indeed+2	Array Binary Search+4
719. Find K-th Smallest Pair Distance	Solve	Hard	Facebook	Array Binary Search+2
720. Longest Word in Dictionary	Solve	Medium	Google	Array Hash Table+3
721. Accounts Merge	Solve	Medium	Amazon+6	Array Breadth-First Search+5
722. Remove Comments	Solve	Medium	Apple+7	Array String
723. Candy Crush	Solve	Medium	Bloomberg+3	Array Matrix+2
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
727. Minimum Window Subsequence	Solve	Hard	Google	Dynamic Programming Sliding Window+1
728. Self Dividing Numbers	Solve	Easy	Adobe+3	Math
729. My Calendar I	Solve	Medium	Amazon+2	Array Binary Search+3
730. Count Different Palindromic Subsequences	Solve	Hard	Apple+3	Dynamic Programming String
731. My Calendar II	Solve	Medium	Google+1	Array Binary Search+4
732. My Calendar III	Solve	Hard	Amazon+1	Binary Search Design+3
733. Flood Fill	Solve	Easy	Adobe+8	Array Breadth-First Search+2
734. Sentence Similarity	Solve	Easy	Facebook+1	Array Hash Table+1
735. Asteroid Collision	Solve	Medium	Amazon+15	Array Simulation+1
736. Parse Lisp Expression	Solve	Hard	Affirm	Hash Table Recursion+2
737. Sentence Similarity II	Solve	Medium	Amazon	Array Breadth-First Search+4
738. Monotone Increasing Digits	Solve	Medium	Amazon+2	Greedy Math
739. Daily Temperatures	Solve	Medium	Amazon+7	Array Monotonic Stack+1
740. Delete and Earn	Solve	Medium	Amazon+2	Array Dynamic Programming+1
741. Cherry Pickup	Solve	Hard	Akuna Capital+7	Array Dynamic Programming+1
742. Closest Leaf in a Binary Tree	Solve	Medium	Facebook	Binary Tree Breadth-First Search+2
743. Network Delay Time	Solve	Medium	Amazon+1	Breadth-First Search Depth-First Search+3
744. Find Smallest Letter Greater Than Target	Solve	Easy	Amazon+2	Array Binary Search
745. Prefix and Suffix Search	Solve	Hard	Facebook+2	Array Design+3
746. Min Cost Climbing Stairs	Solve	Easy	Adobe+9	Array Dynamic Programming
747. Largest Number At Least Twice of Others	Solve	Easy	Google	Array Sorting
748. Shortest Completing Word	Solve	Easy	Google	Array Hash Table+1
749. Contain Virus	Solve	Hard	Accolite+2	Array Breadth-First Search+3
750. Number Of Corner Rectangles	Solve	Medium	Facebook	Array Dynamic Programming+2