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
3390 Longest Team Pass Streak Hard
Database
3391 Design a 3D Binary Matrix with Efficient Layer Tracking Medium
ArrayHash TableDesign
3392 Count Subarrays of Length Three With a Condition Easy
Array
3393 Count Paths With the Given XOR Value Medium
ArrayDynamic ProgrammingBit Manipulation
3394 Check if Grid can be Cut into Sections Medium
ArraySorting
3395 Subsequences with a Unique Middle Mode I Hard
ArrayHash TableMath
3396 Minimum Number of Operations to Make Elements in Array Distinct Easy
ArrayHash Table
3397 Maximum Number of Distinct Elements After Operations Medium
ArrayGreedySorting
3398 Smallest Substring With Identical Characters I Hard
ArrayBinary SearchEnumeration
3399 Smallest Substring With Identical Characters II Hard
StringBinary Search
3400 Maximum Number of Matching Indices After Right Shifts Medium
ArrayTwo PointersSimulation
3401 Find Circular Gift Exchange Chains Hard
Database
3402 Minimum Operations to Make Columns Strictly Increasing Easy
ArrayGreedyMatrix
3403 Find the Lexicographically Largest String From the Box I Medium
Two PointersStringEnumeration
3404 Count Special Subsequences Medium
ArrayHash TableMath
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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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