Sum of integers in an array

Problem

Given an array of integers, write a function that returns the sum of the integers.
Example input: [1, 2, 3, 4]
Example output: 10

Solution

This solution is in JavaScript. Our A.I. can create solutions in multiple languages.

kayakane

// Solution:

function sum(arr) {
  return arr.reduce((acc, curr) => acc + curr, 0);
}

// Explanation:
// The reduce method is the most optimal solution because it iterates through the array once and returns the sum of the integers.
// The reduce method is also more readable than a for loop.