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
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
778. Swim in Rising Water	Solve	Hard	Amazon+6	Array Binary Search+5
780. Reaching Points	Solve	Hard	Bloomberg+11	Math
782. Transform to Chessboard	Solve	Hard	Citadel+1	Array Bit Manipulation+2
793. Preimage Size of Factorial Zeroes Function	Solve	Hard	Adobe	Binary Search Math
798. Smallest Rotation with Highest Score	Solve	Hard	Apple	Array Prefix Sum
801. Minimum Swaps To Make Sequences Increasing	Solve	Hard	Amazon+1	Array Dynamic Programming
803. Bricks Falling When Hit	Solve	Hard	Google+1	Array Matrix+1
805. Split Array With Same Average	Solve	Hard	Microsoft	Array Bit Manipulation+3
810. Chalkboard XOR Game	Solve	Hard	Garena	Array Bit Manipulation+3
815. Bus Routes	Solve	Hard	Amazon+7	Array Breadth-First Search+1
818. Race Car	Solve	Hard	Amazon+1	Dynamic Programming
827. Making A Large Island	Solve	Hard	Adobe+10	Array Breadth-First Search+3
828. Count Unique Characters of All Substrings of a Given String	Solve	Hard	Amazon+3	Dynamic Programming Hash Table+1
829. Consecutive Numbers Sum	Solve	Hard	Bloomberg	Enumeration Math
834. Sum of Distances in Tree	Solve	Hard	Google+2	Depth-First Search Dynamic Programming+2
839. Similar String Groups	Solve	Hard	Apple+1	Array Breadth-First Search+4
843. Guess the Word	Solve	Hard	Bloomberg+2	Array Game Theory+3
847. Shortest Path Visiting All Nodes	Solve	Hard	Amazon+7	Bit Manipulation Bitmask+3
850. Rectangle Area II	Solve	Hard	-	Array Line Sweep+2
854. K-Similar Strings	Solve	Hard	Bytedance+2	Breadth-First Search String
857. Minimum Cost to Hire K Workers	Solve	Hard	Amazon+2	Array Greedy+2
862. Shortest Subarray with Sum at Least K	Solve	Hard	Adobe+3	Array Binary Search+5
864. Shortest Path to Get All Keys	Solve	Hard	Airbnb+5	Array Bit Manipulation+2
871. Minimum Number of Refueling Stops	Solve	Hard	Amazon+9	Array Dynamic Programming+2
878. Nth Magical Number	Solve	Hard	Google	Binary Search Math
879. Profitable Schemes	Solve	Hard	Amazon+1	Array Dynamic Programming
882. Reachable Nodes In Subdivided Graph	Solve	Hard	-	Graph Heap (Priority Queue)+1
887. Super Egg Drop	Solve	Hard	Amazon+3	Binary Search Dynamic Programming+1
891. Sum of Subsequence Widths	Solve	Hard	Publicis Sapient	Array Math+1
895. Maximum Frequency Stack	Solve	Hard	Adobe+7	Design Hash Table+2
899. Orderly Queue	Solve	Hard	Amazon	Math Sorting+1
902. Numbers At Most N Given Digit Set	Solve	Hard	Amazon+1	Array Binary Search+3
903. Valid Permutations for DI Sequence	Solve	Hard	Amazon+1	Dynamic Programming Prefix Sum+1
906. Super Palindromes	Solve	Hard	Google	Enumeration Math
913. Cat and Mouse	Solve	Hard	Google	Dynamic Programming Game Theory+4
920. Number of Music Playlists	Solve	Hard	Amazon+3	Combinatorics Dynamic Programming+1
924. Minimize Malware Spread	Solve	Hard	Adobe+3	Array Breadth-First Search+4
927. Three Equal Parts	Solve	Hard	Hotstar	Array Math
928. Minimize Malware Spread II	Solve	Hard	Dropbox+1	Array Breadth-First Search+4
936. Stamping The Sequence	Solve	Hard	-	Greedy Queue+2
940. Distinct Subsequences II	Solve	Hard	Google	Dynamic Programming String
943. Find the Shortest Superstring	Solve	Hard	-	Array Bit Manipulation+3
952. Largest Component Size by Common Factor	Solve	Hard	Google	Array Hash Table+3
956. Tallest Billboard	Solve	Hard	-	Array Dynamic Programming
960. Delete Columns to Make Sorted III	Solve	Hard	Google	Array Dynamic Programming+1
964. Least Operators to Express Number	Solve	Hard	Snapchat	Dynamic Programming Math+1
968. Binary Tree Cameras	Solve	Hard	Amazon+7	Binary Tree Depth-First Search+2