Easy csharp

Array sum (5 elements) #61

Problem

Sum [1, 2, 3, 4, 5].

Hints

foreach sum

Your practice code

Ready — edit the code above and click Run.

Solution

using System;

class Program
{
    static void Main()
    {
        int[] arr = { 1, 2, 3, 4, 5 };
        int sum = 0; foreach (var x in arr) sum += x;
        Console.WriteLine(sum);
    }
}

Try solving on your own first, then reveal the official answer.

Explanation

O(n) scan.

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