Sum all elements in a list

To sum all elements in a list, we can simply iterate through the list and add each element to a running total. This will take O(n) time, where n is the length of the list.


Given a list of integers, find the sum of all the elements in the list.
Example input: [1, 2, 3, 4]
Example output: 10


This solution is in JavaScript. Our A.I. can create solutions in multiple languages.
by kayakane
// Solution:

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

// This solution is optimal because it is O(n) time complexity.
// It is O(n) because the for loop iterates through the array once.
// The for loop is the only loop in the function, so it is the only
// loop that affects the time complexity.

A.I. Evaluation of the Solution

This solution is correct and demonstrates a level of completeness. The approach is straightforward and easy to follow.

Evaluated at: 2022-12-06 10:15:25