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
751 Delete Columns to Make Sorted Easy
ArrayString
752 Delete Columns to Make Sorted II Medium
ArrayStringGreedy
753 Delete Columns to Make Sorted III Hard
ArrayStringDynamic Programming
754 Delete Duplicate Emails Easy
Database
755 Delete Duplicate Folders in System Hard
ArrayHash TableString
756 Delete Greatest Value in Each Row Easy
ArraySortingHeap (Priority Queue)
757 Delete Leaves With a Given Value Medium
TreeDepth-First SearchBinary Tree
758 Delete N Nodes After M Nodes of a Linked List Easy
Linked List
759 Delete Node in a BST Medium
TreeBinary Search TreeBinary Tree
760 Delete Node in a Linked List Medium
Linked List
761 Delete Nodes And Return Forest Medium
ArrayHash TableTree
762 Delete Nodes From Linked List Present in Array Medium
ArrayHash TableLinked List
763 Delete Operation for Two Strings Medium
StringDynamic Programming
764 Delete the Middle Node of a Linked List Medium
Linked ListTwo Pointers
765 Delete Tree Nodes Medium
ArrayTreeDepth-First Search
Showing 751-765 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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