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
3434 Maximum Frequency After Subarray Operation Medium
ArrayHash TableDynamic Programming
3436 Find Valid Emails Easy
Database
3436 Reschedule Meetings for Maximum Free Time I Medium
ArrayGreedySliding Window
3437 Permutations III Medium
ArrayBacktracking
3437 Reschedule Meetings for Maximum Free Time II Medium
ArrayGreedyEnumeration
3438 Find Valid Pair of Adjacent Digits in String Easy
Hash TableStringCounting
3438 Minimum Cost Good Caption Hard
StringDynamic Programming
3440 Maximum Manhattan Distance After K Changes Medium
Hash TableMathString
3442 Maximum Difference Between Even and Odd Frequency I Easy
Hash TableStringCounting
3444 Minimum Increments for Target Multiples in an Array Hard
ArrayMathDynamic Programming
3445 Maximum Difference Between Even and Odd Frequency II Hard
StringSliding WindowEnumeration
3446 Sort Matrix by Diagonals Medium
ArraySortingMatrix
3447 Assign Elements to Groups with Constraints Medium
ArrayHash Table
3448 Count Substrings Divisible By Last Digit Hard
StringDynamic Programming
3449 Maximize the Minimum Game Score Hard
ArrayBinary SearchGreedy
Showing 3436-3450 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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