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
2986 Reverse Bits Easy
Divide and ConquerBit Manipulation
2987 Reverse Degree of a String Easy
StringSimulation
2988 Reverse Integer Medium
Math
2989 Reverse Linked List Easy
Linked ListRecursion
2990 Reverse Linked List II Medium
Linked List
2991 Reverse Nodes in Even Length Groups Medium
Linked List
2992 Reverse Nodes in k-Group Hard
Linked ListRecursion
2993 Reverse Odd Levels of Binary Tree Medium
TreeDepth-First SearchBreadth-First Search
2994 Reverse Only Letters Easy
Two PointersString
2995 Reverse Pairs Hard
ArrayBinary SearchDivide and Conquer
2996 Reverse Prefix of Word Easy
Two PointersStringStack
2997 Reverse String Easy
Two PointersString
2998 Reverse String II Easy
Two PointersString
2999 Reverse Subarray To Maximize Array Value Hard
ArrayMathGreedy
3000 Reverse Substrings Between Each Pair of Parentheses Medium
StringStack
Showing 2986-3000 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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