Master DSA Topics - February, 2026

Practice problems across 75+ categories

All Coding Problems

Practice coding problems across all companies and topics 3600 problems | 879 Easy | 1856 Medium | 842 Hard

# Problem Difficulty Topics
3570 Best Time to Buy and Sell Stock V Medium
ArrayDynamic Programming
3570 Find Books with No Available Copies Easy
Database
3571 Find the Shortest Superstring II Easy
String
3572 Maximize Y‑Sum by Picking a Triplet of Distinct X‑Values Medium
ArrayHash TableGreedy
3572 Maximum Good Subtree Score Hard
ArrayDynamic ProgrammingBit Manipulation
3574 Maximize Subarray GCD Score Hard
ArrayMathEnumeration
3576 Transform Array to All Equal Elements Medium
ArrayGreedy
3577 Count the Number of Computer Unlocking Permutations Medium
ArrayMathBrainteaser
3578 Count Partitions With Max-Min Difference at Most K Medium
ArrayDynamic ProgrammingQueue
3579 Minimum Steps to Convert String with Operations Hard
StringDynamic ProgrammingGreedy
3580 Find Consistently Improving Employees Medium
Database
3581 Count Odd Letters from Number Easy
Hash TableStringSimulation
3582 Find Weighted Median Node in Tree Hard
ArrayBinary SearchDynamic Programming
3582 Generate Tag for Video Caption Easy
StringSimulation
3583 Count Special Triplets Medium
ArrayHash TableCounting
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public class MyFirstJavaProgram { Edit & Run

   /* This is my first java program.
    * This will print 'Hello, World!' as the output
    */

   public static void main(String []args) {
      System.out.println("Hello, World!"); // prints
   }
}

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