SumArrays.js

/**
 * Description:
 *
 * 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.
 *
 * What We're Testing
 *
 * We're testing basic loops and math operations. This is
 * for beginners who are just learning loops and math operations.
 * Advanced users may find this extremely easy and can
 * easily write this in one line.
 *
 * Kata URL: https://www.codewars.com/kata/53dc54212259ed3d4f00071c
 *
 * @param {*} numbers
 * @returns
 */

function sum(numbers) {
  let result = 0;

  if (numbers.length === 0) {
    return result;
  }

  numbers.forEach((element) => {
    result += element;
  });

  return result;
}