Sum Numbers

A classic array operation is computing a total. Implement a small helper that sums all numbers in an array and returns a single number. You may use a loop or reduce.

This reinforces reading values from number[] and returning a number without changing the input.

Your Task

• Complete sum(nums: number[]): number.
• Handle the empty array by returning 0.

Examples

• sum([2, 3, 5]) → 10
• sum([]) → 0