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
1575 Count All Possible Routes Hard
ArrayDynamic ProgrammingMemoization
1576 Replace All ?'s to Avoid Consecutive Repeating Characters Easy
String
1577 Number of Ways Where Square of Number Is Equal to Product of Two Numbers Medium
ArrayHash TableMath
1578 Minimum Time to Make Rope Colorful Medium
ArrayStringDynamic Programming
1579 Remove Max Number of Edges to Keep Graph Fully Traversable Hard
Union FindGraph
1580 Put Boxes Into the Warehouse II Medium
ArrayGreedySorting
1581 Customer Who Visited but Did Not Make Any Transactions Easy
Database
1581 Min Cost to Connect All Points Medium
ArrayUnion FindGraph
1582 Special Positions in a Binary Matrix Easy
ArrayMatrix
1583 Count Unhappy Friends Medium
ArraySimulation
1585 Check If String Is Transformable With Substring Sort Operations Hard
StringGreedySorting
1586 Binary Search Tree Iterator II Medium
StackTreeDesign
1587 Bank Account Summary II Easy
Database
1588 Sum of All Odd Length Subarrays Easy
ArrayMathPrefix Sum
1589 Maximum Sum Obtained of Any Permutation Medium
ArrayGreedySorting
Showing 1576-1590 of 3602
1 ... 104 105 106 107 108 ... 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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