using System;

using System.Collections.Generic;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        const int tierA = 300, tierB = 600;

        const double comA=1.3,comB=1.6,comC=1.9;

        List<Employee> empName = getlist();

        double[] profits = new double[empName.Count];

        Stopwatch stopWatch = new Stopwatch();

        stopWatch.Start();

        for(int i = 0;i<empName.Count;i++){

            if(empName[i].Sales<=tierA) // tierA

            {

                profits[i]=empName[i].Sales * comA;

            }

            else if (empName[i].Sales>tierA && empName[i].Sales<=tierB) // tierB

            {

                profits[i]=empName[i].Sales * comB;

            }

            else //tierC

            {

                profits[i]=empName[i].Sales * comC;

            }

            Console.WriteLine(profits[i]);

        }

        stopWatch.Stop();

        TimeSpan ts = stopWatch.Elapsed;

        string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",

            ts.Hours, ts.Minutes, ts.Seconds,

            ts.Milliseconds / 10);

        Console.WriteLine("RunTime " + elapsedTime);

}

​

 protected static List<Employee> getlist()

    {

        var employee = new List<Employee>();

        var random = new Random();

        int arraySize = 250000;

        //Generate Name

        string[] consonants = { "b", "c", "d", "f", "g", "h", "j", "k", "l", "m", "l", "n", "p", "q", "r", "s", "sh", "zh", "t", "v", "w", "x" };

        string[] vowels = { "a", "e", "i", "o", "u", "ae", "y" };

        string[] product = { "life", "non-life"};

        string Name = "";

        Name += consonants[random.Next(consonants.Length)].ToUpper();

        Name += vowels[random.Next(vowels.Length)];

        for( int i = 0; i < arraySize; ++i ) {

            employee.Add( new Employee {

                Name = consonants[random.Next(consonants.Length)]+vowels[random.Next(vowels.Length)] + consonants[random.Next(consonants.Length)]+vowels[random.Next(vowels.Length)],

                Sales=random.Next( 1000 ),

                Product=product[random.Next(product.Length)]

            });

        }

        return employee;    

    }

    public class Employee{

        public string Name { get; set; }

        public string Product { get; set; }

        public double Sales { get; set; }

        public double Commission { get; set; }

    }

}

​

​

​

​

​