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
2280 Minimum Lines to Represent a Line Chart Medium
ArrayMathGeometry
2281 Sum of Total Strength of Wizards Hard
ArrayStackMonotonic Stack
2282 Number of People That Can Be Seen in a Grid Medium
ArrayStackMatrix
2283 Booking Concert Tickets in Groups Hard
Binary SearchDesignBinary Indexed Tree
2283 Check if Number Has Equal Digit Count and Digit Value Easy
Hash TableStringCounting
2284 Sender With Largest Word Count Medium
ArrayHash TableString
2285 Maximum Total Importance of Roads Medium
GreedyGraphSorting
2287 Rearrange Characters to Make Target String Easy
Hash TableStringCounting
2288 Apply Discount to Prices Medium
String
2289 Steps to Make Array Non-decreasing Medium
ArrayLinked ListStack
2290 Minimum Obstacle Removal to Reach Corner Hard
ArrayBreadth-First SearchGraph
2291 Maximum Profit From Trading Stocks Medium
ArrayDynamic Programming
2292 Products With Three or More Orders in Two Consecutive Years Medium
Database
2293 Min Max Game Easy
ArraySimulation
2294 Jump Game VIII Medium
ArrayDynamic ProgrammingStack
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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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