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
3001. Minimum Moves to Capture The Queen	Solve	Medium	-	Array Enumeration
3002. Maximum Size of a Set After Removals	Solve	Medium	-	Array Greedy+1
3003. Maximize the Number of Partitions After Operations	Solve	Hard	-	Bit Manipulation Bitmask+2
3004. Maximum Subtree of the Same Color	Solve	Medium	-	Array Depth-First Search+2
3005. Count Elements With Maximum Frequency	Solve	Easy	-	Array Counting+1
3006. Find Beautiful Indices in the Given Array I	Solve	Medium	-	Binary Search Hash Function+4
3007. Maximum Number That Sum of the Prices Is Less Than or Equal to K	Solve	Medium	-	Binary Search Bit Manipulation+1
3008. Find Beautiful Indices in the Given Array II	Solve	Hard	-	Binary Search Hash Function+4
3009. Maximum Number of Intersections on the Chart	Solve	Hard	-	Array Binary Indexed Tree+2
3010. Divide an Array Into Subarrays With Minimum Cost I	Solve	Easy	-	Array Enumeration+1
3011. Find if Array Can Be Sorted	Solve	Medium	-	Array Bit Manipulation+1
3012. Minimize Length of Array Using Operations	Solve	Medium	-	Array Greedy+2
3013. Divide an Array Into Subarrays With Minimum Cost II	Solve	Hard	-	Array Hash Table+2
3014. Minimum Number of Pushes to Type Word I	Solve	Easy	-	Greedy Math+1
3015. Count the Number of Houses at a Certain Distance I	Solve	Medium	-	Breadth-First Search Graph+1
3016. Minimum Number of Pushes to Type Word II	Solve	Medium	-	Counting Greedy+3
3017. Count the Number of Houses at a Certain Distance II	Solve	Hard	-	Graph Prefix Sum
3018. Maximum Number of Removal Queries That Can Be Processed I	Solve	Hard	-	Array Dynamic Programming
3019. Number of Changing Keys	Solve	Easy	-	String
3020. Find the Maximum Number of Elements in Subset	Solve	Medium	-	Array Enumeration+1
3021. Alice and Bob Playing Flower Game	Solve	Medium	-	Math
3022. Minimize OR of Remaining Elements Using Operations	Solve	Hard	-	Array Bit Manipulation+1
3023. Find Pattern in Infinite Stream I	Solve	Medium	-	Array Hash Function+3
3024. Type of Triangle	Solve	Easy	-	Array Math+1
3025. Find the Number of Ways to Place People I	Solve	Medium	-	Array Enumeration+3
3026. Maximum Good Subarray Sum	Solve	Medium	-	Array Hash Table+1
3027. Find the Number of Ways to Place People II	Solve	Hard	-	Array Enumeration+3
3028. Ant on the Boundary	Solve	Easy	-	Array Prefix Sum+1
3029. Minimum Time to Revert Word to Initial State I	Solve	Medium	-	Hash Function Rolling Hash+2
3030. Find the Grid of Region Average	Solve	Medium	-	Array Matrix
3031. Minimum Time to Revert Word to Initial State II	Solve	Hard	-	Hash Function Rolling Hash+2
3032. Count Numbers With Unique Digits II	Solve	Easy	-	Dynamic Programming Hash Table+1
3033. Modify the Matrix	Solve	Easy	-	Array Matrix
3034. Number of Subarrays That Match a Pattern I	Solve	Medium	-	Array Hash Function+2
3035. Maximum Palindromes After Operations	Solve	Medium	-	Array Counting+4
3036. Number of Subarrays That Match a Pattern II	Solve	Hard	-	Array Hash Function+2
3037. Find Pattern in Infinite Stream II	Solve	Hard	-	Array Hash Function+3
3038. Maximum Number of Operations With the Same Score I	Solve	Easy	-	Array Simulation
3039. Apply Operations to Make String Empty	Solve	Medium	-	Array Counting+2
3040. Maximum Number of Operations With the Same Score II	Solve	Medium	-	Array Dynamic Programming+1
3041. Maximize Consecutive Elements in an Array After Modification	Solve	Hard	-	Array Dynamic Programming+1
3042. Count Prefix and Suffix Pairs I	Solve	Easy	-	Array Hash Function+4
3043. Find the Length of the Longest Common Prefix	Solve	Medium	-	Array Hash Table+2
3044. Most Frequent Prime	Solve	Medium	-	Array Counting+5
3045. Count Prefix and Suffix Pairs II	Solve	Hard	-	Array Hash Function+4
3046. Split the Array	Solve	Easy	-	Array Counting+1
3047. Find the Largest Area of Square Inside Two Rectangles	Solve	Medium	-	Array Geometry+1
3048. Earliest Second to Mark Indices I	Solve	Medium	-	Array Binary Search
3049. Earliest Second to Mark Indices II	Solve	Hard	-	Array Binary Search+2
3050. Pizza Toppings Cost Analysis	Solve	Medium	-	Database