Interactive Coding Practice Problems - Page 2 | TutorialsPoint

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Master DSA Topics - January, 2026

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Interactive Coding Problems

Practice problems frequently asked at Interactive • 23 problems | 4 Easy | 14 Medium | 5 Hard

#	Problem	Difficulty	Topics
16	Number of Ships in a Rectangle	Hard	ArrayDivide and ConquerInteractive
17	Number of Unique Categories	Medium	Union FindInteractiveCounting
18	Read N Characters Given Read4	Easy	ArraySimulationInteractive
19	Read N Characters Given read4 II - Call Multiple Times	Hard	ArraySimulationInteractive
20	Robot Room Cleaner	Hard	BacktrackingInteractive
21	Search in a Sorted Array of Unknown Size	Medium	ArrayBinary SearchInteractive
22	Shortest Path in a Hidden Grid	Medium	ArrayDepth-First SearchBreadth-First Search
23	Web Crawler	Medium	StringDepth-First SearchBreadth-First Search

Showing 16-23 of 23

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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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