ArrowFunctionsHR.js

/*
Task

Complete the function in the editor. It has one parameter: an array, . It must iterate through the array performing one of the following actions on each element:

If the element is even, multiply the element by .
If the element is odd, multiply the element by .
The function must then return the modified array.

Input Format

The first line contains an integer, , denoting the size of .
The second line contains  space-separated integers describing the respective elements of .

Constraints

, where  is the  element of .
Output Format

Return the modified array where every even element is doubled and every odd element is tripled.

Sample Input 0

5
1 2 3 4 5
Sample Output 0

3 4 9 8 15
Explanation 0

Given , we modify each element so that all even elements are multiplied by  and all odd elements are multipled by . In other words, . We then return the modified array as our answer.


*/
// 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++];
}

/*
 * Modify and return the array so that all even elements are doubled and all odd elements are tripled.
 * 
 * Parameter(s):
 * nums: An array of numbers.
 */
function modifyArray(nums) {
    var new_arr = nums.map(s => (s%2 == 0)? s*2 :s*3);
    return new_arr
}