sumOfArray.js

// 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

// Assumptions
// You can assume that you are only given numbers.
// You cannot assume the size of the array.
// You can assume that you do get an array and if the array is empty, return 0.

//SOLUTION

function sum(numbers) {
    let sum = 0;  
    for (let i = 0; i < numbers.length; i++) {  
        sum += numbers[i];  
    }  
    return sum;  
}

// Start with sum = 0.
// Loop through the array using for.
// Add each number to sum.
// Return the final result.