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
2220 Minimum Bit Flips to Convert Number Easy
Bit Manipulation
2221 Find Triangular Sum of an Array Medium
ArrayMathSimulation
2222 Number of Ways to Select Buildings Medium
StringDynamic ProgrammingPrefix Sum
2223 Sum of Scores of Built Strings Hard
StringBinary SearchRolling Hash
2224 Minimum Number of Operations to Convert Time Easy
StringGreedy
2225 Find Players With Zero or One Losses Medium
ArrayHash TableSorting
2226 Maximum Candies Allocated to K Children Medium
ArrayBinary Search
2227 Encrypt and Decrypt Strings Hard
ArrayHash TableString
2228 Users With Two Purchases Within Seven Days Medium
Database
2229 Check if an Array Is Consecutive Easy
ArrayHash TableSorting
2230 The Users That Are Eligible for Discount Easy
Database
2231 Largest Number After Digit Swaps by Parity Easy
SortingHeap (Priority Queue)
2231 Maximum Total Beauty of the Gardens Hard
ArrayTwo PointersBinary Search
2232 Minimize Result by Adding Parentheses to Expression Medium
StringEnumeration
2233 Maximum Product After K Increments Medium
ArrayGreedyHeap (Priority Queue)
Showing 2221-2235 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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