using System;
using System.Linq;

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

BenchmarkRunner.Run<ForEachVsFor>();

[RPlotExporter, RankColumn, MemoryDiagnoser]
public class ForEachVsFor
{
    private int[] array;

    [Params(10, 100, 1000)]
    public int N;

    [GlobalSetup]
    public void Setup()
    {
        array = Enumerable.Repeat(0, N)
        .Select(i => Random.Shared.Next(1, 10))
        .ToArray();
    }

    [Benchmark(Baseline = true)]
    public int For()
    {
        var total = 0;
        for (var i = 0; i < array.Length; i++)
        {
            total += array[i];
        }

        return total;
    }

    [Benchmark]
    public int Foreach()
    {
        var total = 0;
        foreach (var i in array)
        {
            total += i;
        }

        return total;
    }
}