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
1290 Convert Binary Number in a Linked List to Integer Easy
Linked ListMath
1291 Sequential Digits Medium
Enumeration
1292 Maximum Side Length of a Square with Sum Less than or Equal to Threshold Medium
ArrayBinary SearchMatrix
1293 Shortest Path in a Grid with Obstacles Elimination Hard
ArrayBreadth-First SearchMatrix
1294 Weather Type in Each Country Easy
Database
1295 Find Numbers with Even Number of Digits Easy
ArrayMath
1296 Divide Array in Sets of K Consecutive Numbers Medium
ArrayHash TableGreedy
1297 Maximum Number of Occurrences of a Substring Medium
Hash TableStringSliding Window
1298 Maximum Candies You Can Get from Boxes Hard
ArrayBreadth-First SearchGraph
1298 Number of Paths with Max Score Hard
ArrayDynamic ProgrammingMatrix
1299 Deepest Leaves Sum Medium
TreeDepth-First SearchBreadth-First Search
1299 Replace Elements with Greatest Element on Right Side Easy
Array
1300 Sum of Mutated Array Closest to Target Medium
ArrayBinary SearchSorting
1303 Find the Team Size Easy
Database
1304 Find N Unique Integers Sum up to Zero Easy
ArrayMath
Showing 1291-1305 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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