simple-array-sum.js

/*
Given an array of integers, find the sum of its elements.

For example, if the array ar = [1, 2, 3], 1 + 2 + 3 = 6, so return 6.

Function Description
Complete the simpleArraySum function in the editor below. It must return the sum of the array elements as an integer.

simpleArraySum has the following parameter(s):
- ar: an array of integers

Input Format
- The first line contains an integer, n, denoting the size of the array.
- The second line contains n space-separated integers representing the array's elements.

Constraints
- 0 < n, ar[i] <= 1000

Output Format
Print the sum of the array's elements as a single integer.
*/

function simpleArraySum(ar) {
    return ar.reduce(function(sum, i) {
        return sum += i;
    });
}