Master DSA Topics - January, 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
2851 Random Point in Non-overlapping Rectangles Medium
ArrayMathBinary Search
2852 Range Addition Medium
ArrayPrefix Sum
2853 Range Addition II Easy
ArrayMath
2854 Range Frequency Queries Medium
ArrayHash TableBinary Search
2855 Range Module Hard
DesignSegment TreeOrdered Set
2856 Range Product Queries of Powers Medium
ArrayBit ManipulationPrefix Sum
2857 Range Sum of BST Easy
TreeDepth-First SearchBinary Search Tree
2858 Range Sum of Sorted Subarray Sums Medium
ArrayTwo PointersBinary Search
2859 Range Sum Query 2D - Immutable Medium
ArrayDesignMatrix
2860 Range Sum Query 2D - Mutable Medium
ArrayDesignBinary Indexed Tree
2861 Range Sum Query - Immutable Easy
ArrayDesignPrefix Sum
2862 Range Sum Query - Mutable Easy
ArrayDivide and ConquerDesign
2863 Range XOR Queries with Subarray Reversals Hard
ArrayTreeBinary Tree
2864 Rank Scores Medium
Database
2865 Rank Teams by Votes Medium
ArrayHash TableString
Showing 2851-2865 of 3600
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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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