Write a function that takes an array of numbers and returns the sum of the numbers. The numbers can be negative or non-integer. If the array does not contain any numbers then you should return 0.
Examples
Input: [1, 5.2, 4, 0, -1]
Output: 9.2
Input: []
Output: 0
Input: [-2.398]
Output: -2.398
function sum (numbers) {
return numbers.reduce((sum, cur) => sum + cur, 0)
};