learn kro favicon img

Day 0: Hello, World | HackerRank Solution

Hello coders, today we are going to solve Day 0: Hello, World HackerRank Solution which is a part of 30 Days of Code Series in C++Java and Python.


In this challenge, we review some basic concepts that will get you started with this series. You will need to use the same (or similar) syntax to read input and write output in challenges throughout HackerRank. Check out the Tutorial tab for learning materials and an instructional video!


To complete this challenge, you must save a line of input from stdin to a variable, print Hello, World. on a single line, and finally print the value of your variable on a second line.

You’ve got this!

Note: The instructions are Java-based, but we support submissions in many popular languages. You can switch languages using the drop-down menu above your editor, and the inputString variable may be written differently depending on the best-practice conventions of your submission language.

Input Format

A single line of text denoting inputString (the variable whose contents must be printed).

Output Format

Print Hello, World. on the first line, and the contents of inputString on the second line.

Sample Input

Sample Output


On the first line, we print the string literal Hello, World.. On the second line, we print the contents of the inputString variable which, for this sample case, happens to be Welcome to 30 Days of Code!If you do not print the variable’s contents to stdout, you will not pass the hidden test case.

Solution – Day 0: Hello, World Solution





# Read a full line of input from stdin and save it to our dynamically typed variable, input_string.


Disclaimer: The above Problem (Day 0: Hello, World) is generated by Hacker Rank but the Solution is Provided by Learnkro. This tutorial is only for Educational and Learning Purpose.

Leave a Comment

Your email address will not be published. Required fields are marked *