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
751. IP to CIDR	Solve	Medium	Airbnb+1	Bit Manipulation String
752. Open the Lock	Solve	Medium	Amazon+4	Array Breadth-First Search+2
753. Cracking the Safe	Solve	Hard	Google+1	Depth-First Search Eulerian Circuit+1
754. Reach a Number	Solve	Medium	Amazon	Binary Search Math
755. Pour Water	Solve	Medium	Airbnb	Array Simulation
756. Pyramid Transition Matrix	Solve	Medium	Airbnb+2	Bit Manipulation Breadth-First Search+1
757. Set Intersection Size At Least Two	Solve	Hard	Drawbridge+1	Array Greedy+1
758. Bold Words in String	Solve	Medium	Google	Array Hash Table+3
759. Employee Free Time	Solve	Hard	Airbnb+7	Array Heap (Priority Queue)+1
760. Find Anagram Mappings	Solve	Easy	Google	Array Hash Table
761. Special Binary String	Solve	Hard	Coursera+1	Recursion String
762. Prime Number of Set Bits in Binary Representation	Solve	Easy	Amazon	Bit Manipulation Math
763. Partition Labels	Solve	Medium	Amazon+1	Greedy Hash Table+2
764. Largest Plus Sign	Solve	Medium	Uber	Array Dynamic Programming
765. Couples Holding Hands	Solve	Hard	Bloomberg	Breadth-First Search Depth-First Search+3
766. Toeplitz Matrix	Solve	Easy	Bloomberg+1	Array Matrix
767. Reorganize String	Solve	Medium	Adobe+17	Counting Greedy+4
768. Max Chunks To Make Sorted II	Solve	Hard	Adobe+6	Array Greedy+3
769. Max Chunks To Make Sorted	Solve	Medium	Amazon+1	Array Greedy+3
770. Basic Calculator IV	Solve	Hard	Adobe+1	Hash Table Math+3
771. Jewels and Stones	Solve	Easy	Adobe+2	Hash Table String
772. Basic Calculator III	Solve	Hard	Amazon+12	Math Recursion+2
773. Sliding Puzzle	Solve	Hard	Airbnb+3	Array Backtracking+4
774. Minimize Max Distance to Gas Station	Solve	Hard	Google	Array Binary Search
775. Global and Local Inversions	Solve	Medium	Google	Array Math
776. Split BST	Solve	Medium	Google	Binary Search Tree Binary Tree+2
777. Swap Adjacent in LR String	Solve	Medium	Adobe+2	String Two Pointers
778. Swim in Rising Water	Solve	Hard	Amazon+6	Array Binary Search+5
779. K-th Symbol in Grammar	Solve	Medium	Adobe+3	Bit Manipulation Math+1
780. Reaching Points	Solve	Hard	Bloomberg+11	Math
781. Rabbits in Forest	Solve	Medium	Adobe+2	Array Greedy+2
782. Transform to Chessboard	Solve	Hard	Citadel+1	Array Bit Manipulation+2
783. Minimum Distance Between BST Nodes	Solve	Easy	Bloomberg+3	Binary Search Tree Binary Tree+3
784. Letter Case Permutation	Solve	Medium	Microsoft	Backtracking Bit Manipulation+1
785. Is Graph Bipartite?	Solve	Medium	Bunzo+10	Breadth-First Search Depth-First Search+2
786. K-th Smallest Prime Fraction	Solve	Medium	Pony.ai	Array Binary Search+3
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
789. Escape The Ghosts	Solve	Medium	Google	Array Math
790. Domino and Tromino Tiling	Solve	Medium	Adobe+2	Dynamic Programming
791. Custom Sort String	Solve	Medium	Facebook+1	Hash Table Sorting+1
792. Number of Matching Subsequences	Solve	Medium	Google+1	Array Binary Search+5
793. Preimage Size of Factorial Zeroes Function	Solve	Hard	Adobe	Binary Search Math
794. Valid Tic-Tac-Toe State	Solve	Medium	Google+1	Array Matrix
795. Number of Subarrays with Bounded Maximum	Solve	Medium	Adobe+2	Array Two Pointers
796. Rotate String	Solve	Easy	Apple+4	String String Matching
797. All Paths From Source to Target	Solve	Medium	Adobe+7	Backtracking Breadth-First Search+2
798. Smallest Rotation with Highest Score	Solve	Hard	Apple	Array Prefix Sum
799. Champagne Tower	Solve	Medium	Adobe+6	Dynamic Programming
800. Similar RGB Color	Solve	Easy	Google	Enumeration Math+1