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
3075 Maximize Happiness of Selected Children Medium
ArrayGreedySorting
3076 Shortest Uncommon Substring in an Array Medium
ArrayHash TableString
3077 Mark Elements on Array by Performing Queries Medium
ArrayHash TableSorting
3077 Maximum Strength of K Disjoint Subarrays Hard
ArrayDynamic ProgrammingPrefix Sum
3078 Match Alphanumerical Pattern in Matrix I Medium
ArrayHash TableString
3079 Find the Sum of Encrypted Integers Easy
ArrayMath
3081 Replace Question Marks in String to Minimize Its Value Medium
Hash TableStringGreedy
3082 Find the Sum of the Power of All Subsequences Hard
ArrayDynamic Programming
3083 Existence of a Substring in a String and Its Reverse Easy
Hash TableString
3083 Minimum Moves to Pick K Ones Hard
ArrayGreedySliding Window
3084 Count Substrings Starting and Ending with Given Character Medium
MathStringCounting
3085 Minimum Deletions to Make String K-Special Medium
Hash TableStringGreedy
3087 Find Trending Hashtags Medium
Database
3088 Make String Anti-palindrome Hard
StringGreedySorting
3089 Find Bursty Behavior Medium
Database
Showing 3076-3090 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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