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
3194 Minimum Average of Smallest and Largest Elements Easy
ArrayTwo PointersSorting
3195 Find the Minimum Area to Cover All Ones I Medium
ArrayMatrix
3196 Maximize Total Cost of Alternating Subarrays Medium
ArrayDynamic Programming
3198 Find Cities in Each State Easy
Database
3199 Count Triplets with Even XOR Set Bits I Easy
ArrayBit Manipulation
3200 Maximum Height of a Triangle Easy
ArrayEnumeration
3201 Find the Maximum Length of Valid Subsequence I Medium
ArrayDynamic Programming
3202 Find the Maximum Length of Valid Subsequence II Medium
ArrayDynamic Programming
3203 Find Minimum Diameter After Merging Two Trees Hard
TreeDepth-First SearchBreadth-First Search
3204 Bitwise User Permissions Analysis Medium
Database
3205 Maximum Array Hopping Score I Medium
ArrayDynamic ProgrammingStack
3206 Alternating Groups I Easy
ArraySliding Window
3207 Maximum Points After Enemy Battles Medium
ArrayGreedy
3208 Alternating Groups II Medium
ArraySliding Window
3209 Number of Subarrays With AND Value of K Hard
ArrayBinary SearchBit Manipulation
Showing 3196-3210 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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