Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank, 10 Days Of JavaScript. At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.
In this post, you will find the solution for Day 1: Functions in JavaScript-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To JavaScript
JavaScript is a lightweight, cross-platform, and interpreted scripting language. It is well-known for the development of web pages, many non-browser environments also use it. JavaScript can be used for Client-side developments as well as Server-side developments. JavaScript contains a standard library of objects, like Array, Date, and Math, and a core set of language elements like operators, control structures, and statements.
Advantages of JavaScript
The merits of using JavaScript are −
- Less server interaction − You can validate user input before sending the page off to the server. This saves server traffic, which means less load on your server.
- Immediate feedback to the visitors − They don’t have to wait for a page reload to see if they have forgotten to enter something.
- Increased interactivity − You can create interfaces that react when the user hovers over them with a mouse or activates them via the keyboard.
- Richer interfaces − You can use JavaScript to include such items as drag-and-drop components and sliders to give a Rich Interface to your site visitors.
Link for the Problem – Day 1: Functions – Hacker Rank Solution
Day 1: Functions– Hacker Rank Solution
Problem:
Objective
Today, we’re discussing JavaScript functions. Check out the attached tutorial for more details.
Task
Implement a function named factorial that has one parameter: an integer, . It must return the value of (i.e., factorial).
Input Format
Locked stub code in the editor reads a single integer, , from stdin and passes it to a function named factorial.
Constraints
Output Format
The function must return the value of .
Sample Input 0
4
Sample Output 0
24
Explanation 0
Day 1: Functions – Hacker Rank Solution
function factorial(n) {
return n ? n * factorial(n - 1) : 1;
}
