HackerRank Solution of 10 Days Of Javascript:-Day 1: Arithmetic Operators

Problem:-

Objective

In this challenge, we practice using arithmetic operators. Check out the attached tutorial for resources.

Task

Complete the following functions in the editor below:

1. getArea(length, width): Calculate and return the area of a rectangle having sides  and .
2. getPerimeter(length, width): Calculate and return the perimeter of a rectangle having sides  and .

The values returned by these functions are printed to stdout by locked stub code in the editor.

Input Format

Constraints

•  and  are scaled to at most three decimal places.

Output Format

Sample Input 0

3
4.5

Sample Output 0

13.5
15

Explanation 0

The area of the rectangle is . 
The perimeter of the rectangle is .

Solution:-

'use strict';

process.stdin.resume();

process.stdin.setEncoding('utf-8');

let inputString = '';

let currentLine = 0;

process.stdin.on('data', inputStdin => {

inputString += inputStdin;

});

process.stdin.on('end', _ => {

inputString = inputString.trim().split('\n').map(string => {

return string.trim();

});

main();

});

function readLine() {

return inputString[currentLine++];

}

/**

* Calculate the area of a rectangle.

*

* length: The length of the rectangle.

* width: The width of the rectangle.

*

*   Return a number denoting the rectangle's area.

**/

function getArea(length, width) {

let area;

area = length * width;

return area;

}

/**

* Calculate the perimeter of a rectangle.

*   

*   length: The length of the rectangle.

* width: The width of the rectangle.

*

*   Return a number denoting the perimeter of a rectangle.

**/

function getPerimeter(length, width) {

let perimeter;

perimeter = 2 * (length + width);

return perimeter;

}

function main() {

const length = +(readLine());

const width = +(readLine());

console.log(getArea(length, width));

console.log(getPerimeter(length, width));

}