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
2145 Count the Hidden Sequences Medium
ArrayPrefix Sum
2146 K Highest Ranked Items Within a Price Range Medium
ArrayBreadth-First SearchSorting
2147 Number of Ways to Divide a Long Corridor Hard
MathStringDynamic Programming
2148 Count Elements With Strictly Smaller and Greater Elements Easy
ArraySortingCounting
2149 Rearrange Array Elements by Sign Medium
ArrayTwo PointersSimulation
2150 Find All Lonely Numbers in the Array Medium
ArrayHash TableCounting
2151 Maximum Good People Based on Statements Hard
ArrayBacktrackingBit Manipulation
2152 Minimum Number of Lines to Cover Points Medium
ArrayHash TableMath
2153 The Number of Passengers in Each Bus II Hard
Database
2154 Keep Multiplying Found Values by Two Easy
ArrayHash TableSorting
2155 All Divisions With the Highest Score of a Binary Array Medium
Array
2156 Find Substring With Given Hash Value Hard
StringSliding WindowRolling Hash
2157 Groups of Strings Hard
StringBit ManipulationUnion Find
2158 Amount of New Area Painted Each Day Hard
ArraySegment TreeOrdered Set
2159 Order Two Columns Independently Medium
Database
Showing 2146-2160 of 3602
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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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