gistfile1.txt

using System;
using System.Diagnostics;
using System.Linq;

namespace Sample22
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = 100_000_000;
            var data = Generate(N);

            var sw = Stopwatch.StartNew();
            var res1 = TestFor(data);
            System.Console.WriteLine($"min: {res1} elapsed: {sw.Elapsed}");
            sw = Stopwatch.StartNew();
            var res2 = TestLinq(data);
            System.Console.WriteLine($"min: {res2} elapsed: {sw.Elapsed}");
        }

        private static int TestFor(int[] data)
        {
            int min = Int32.MaxValue;
            for (int i = 0; i < data.Length; i++)
            {
              if (data[i]>0 && data[i]<min) min = data[i];
            }
            return min;
        }
        private static int TestLinq(int[] data)
        {
            return data.Where(x =>x>0).Min();
        }
        private static int[] Generate(int N)
        {
            var data = new int[N];

            var randNum = new Random();
            for (int i = 0; i < data.Length; i++)
            {
                data[i] = randNum.Next(1, 1000000) - 50000;
            }
            return data;
        }


    }
}