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
826 Most Profit Assigning Work Medium
ArrayTwo PointersBinary Search
827 Making A Large Island Hard
ArrayDepth-First SearchBreadth-First Search
828 Count Unique Characters of All Substrings of a Given String Hard
Hash TableStringDynamic Programming
829 Consecutive Numbers Sum Hard
MathEnumeration
829 Flipping an Image Easy
ArrayTwo PointersBit Manipulation
830 Positions of Large Groups Easy
String
831 Masking Personal Information Medium
String
833 Find And Replace in String Medium
ArrayHash TableString
834 Sum of Distances in Tree Hard
Dynamic ProgrammingTreeDepth-First Search
835 Image Overlap Medium
ArrayMatrix
835 Push Dominoes Medium
Two PointersStringDynamic Programming
836 Rectangle Overlap Easy
MathGeometry
837 Magic Squares In Grid Medium
ArrayHash TableMath
837 New 21 Game Medium
MathDynamic ProgrammingSliding Window
839 Similar String Groups Hard
ArrayHash TableString
Showing 826-840 of 3602
1 ... 54 55 56 57 58 ... 241

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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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