Algorithm
Hacker rank Problem Name: 10 Days of JavaScript -
Hacker rank Problem Link: https://www.hackerrank.com/challenges/js10-arrows/problem?isFullScreen=true
Day 5: Arrow Functions
Objective
In this challenge, we practice using arrow functions. Check the attached tutorial for more details.
Task
Complete the function in the editor. It has one parameter: an array, nums. It must iterate through the array performing one of the following actions on each element:
- If the element is even, multiply the element by 2.
- If the element is odd, multiply the element by 3.
The function must then return the modified array.
Input Format
The first line contains an integer, n, denoting the size of nums.
The second line contains n space-separated integers describing the respective elements of nums.
Constraints
- 1 <= n <= 10
- 1 <= nums[i] <= 100, where nums[i] is the ith element of nums.
Output Format
Return the modified array where every even element is doubled and every odd element is tripled.
Sample Input 0
1 |
5 |
Sample Output 0
1
|
3 4 9 8 15
|
Explanation 0
Given nums = [1,2,3,4,5], we modify each element so that all even elements are multiplied by 2 and all odd elements are multipled by 3. In other words, [1,2,3,4,5] => [13,22,33,42,5*3] -> [3,4,9,8,15]. We then return the modified array as our answer.
Code Examples
#1 Code Example with Javascript Programming
Code -
Javascript Programming
'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++];
}
function modifyArray(nums) {
const func = nums.map(function(num)
{
if (num%2==0)
{
return 2* num;
}
else
{
return 3*num;
}
});
return func;
}
Input
Output