Sum [3, 6, 9, 12, 15].
Ready — edit the code above and click Run.
using System;
class Program
{
static void Main()
{
int[] arr = { 3, 6, 9, 12, 15 };
int sum = 0; foreach (var x in arr) sum += x;
Console.WriteLine(sum);
}
}
Try solving on your own first, then reveal the official answer.
O(n) scan.