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
2130 Maximum Twin Sum of a Linked List Medium
Linked ListTwo PointersStack
2131 Longest Palindrome by Concatenating Two Letter Words Medium
ArrayHash TableString
2132 Stamping the Grid Hard
ArrayGreedyMatrix
2133 Check if Every Row and Column Contains All Numbers Easy
ArrayHash TableMatrix
2134 Minimum Swaps to Group All 1's Together II Medium
ArraySliding Window
2135 Count Words Obtained After Adding a Letter Medium
ArrayHash TableString
2136 Earliest Possible Day of Full Bloom Hard
ArrayGreedySorting
2137 Pour Water Between Buckets to Make Water Levels Equal Medium
ArrayBinary Search
2138 Divide a String Into Groups of Size k Easy
StringSimulation
2139 Minimum Moves to Reach Target Score Medium
MathGreedy
2140 Solving Questions With Brainpower Medium
ArrayDynamic Programming
2141 Maximum Running Time of N Computers Hard
ArrayBinary SearchGreedy
2142 The Number of Passengers in Each Bus I Medium
Database
2143 Choose Numbers From Two Arrays in Range Hard
ArrayDynamic Programming
2144 Minimum Cost of Buying Candies With Discount Easy
ArrayGreedySorting
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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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