Solving the HackerRank Challenge: Java StdIn and StdOut II

Solving the HackerRank Challenge: Reading and Printing Integers

Welcome back to my HackerRank adventure! In this blog post, I'll be sharing my experience of tackling a simple yet fundamental challenge on HackerRank that involves reading integers from stdin and printing them to stdout. This challenge is a great way to practice input and output handling in Java. Let's dive right into it!

The Challenge: Reading and Printing Integers

The challenge is straightforward: we are given several lines of input, each containing a single integer, and our task is to read these integers and print each of them on a new line. The goal is to become comfortable with reading input from stdin (standard input) and writing output to stdout (standard output) in Java.

Understanding the Problem

Before we start writing code, let's take a moment to understand the problem:

• Input: Three lines of input - an integer, a double, and a string.
• Output: Print the string, double, and integer on separate lines with specific labels.

My Approach

To tackle this challenge, I used the Scanner class in Java. Here's a summary of the approach I followed:

1. Importing the Scanner Class: I started by importing the Scanner class from the java.util package.
2. Creating Scanner Object: Next, I created a Scanner object named scan and specified System.in as the input stream.
3. Reading Values: I used the nextInt() method to read the integer, nextDouble() for the double, and nextLine() for the string.
4. Printing Values: Finally, I printed each value on a new line using System.out.println() with appropriate labels.

The Java Code

Testing and Conclusion

After writing the code, I tested it with the provided sample input to ensure it correctly read and printed the values according to the specified format. The code worked as expected, and I successfully completed this HackerRank challenge.

This challenge serves as valuable practice in input and output handling in Java. It's a fundamental skill for any Java programmer, and I encourage you to give it a try if you're new to these concepts.

Stay tuned for more HackerRank challenges and coding adventures. If you have any questions or insights to share, please feel free to leave a comment below. Happy coding!