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
3495 Minimum Operations to Make Array Elements Zero Hard
ArrayMathBit Manipulation
3496 Maximize Score After Pair Deletions Medium
ArrayGreedy
3497 Analyze Subscription Conversion Medium
Database
3498 Reverse Degree of a String Easy
StringSimulation
3499 Maximize Active Section with Trade I Medium
StringEnumeration
3500 Minimum Cost to Divide Array Into Subarrays Hard
ArrayDynamic ProgrammingPrefix Sum
3501 Maximize Active Section with Trade II Hard
ArrayStringBinary Search
3502 Minimum Cost to Reach Every Position Easy
Array
3502 Minimum Operations to Make Elements Within K Subarrays Equal Hard
ArrayHash TableMath
3503 Longest Palindrome After Substring Concatenation I Medium
Two PointersStringDynamic Programming
3504 Longest Palindrome After Substring Concatenation II Hard
Two PointersStringDynamic Programming
3506 Find Time Required to Eliminate Bacterial Strains Hard
ArrayMathGreedy
3507 Minimum Pair Removal to Sort Array I Easy
ArrayHash TableLinked List
3508 Implement Router Medium
ArrayHash TableBinary Search
3509 Maximum Product of Subsequences With an Alternating Sum Equal to K Hard
ArrayHash TableDynamic Programming
Showing 3496-3510 of 3602
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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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