using System;

using System.Collections.Generic;

using System.Data;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        string oss;

            string memorys;

            string input;

            string inputss;

            string tatinput;

            string jobinput;

            string times;

            double tats;

            double os;

            double memory;

            double job;

            double allocation;

            double aac;

            int time;

            int jo;

            int tat;

            string alode;

            string partition;

            string answer;

            string pause;

            string[] outputArray = { "M3: ML- ACT7 Fixed Partition - First Fit", "Panlaqui, Ezzexckquiel Lledor M.", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " };

            do

            {

                Console.Clear();

                Console.WriteLine("M3: ML- ACT7 Fixed Partition - First Fit");

                Console.WriteLine("Panlaqui, Ezzexckquiel Lledor M.");

                Console.WriteLine("Enter the size of OS:");

                oss = Console.ReadLine();

                Console.WriteLine("Enter the size of Memory:");

                memorys = Console.ReadLine();

                Console.WriteLine("Enter the amount of jobs:");

                jobinput = Console.ReadLine();

                if (Double.TryParse(oss, out os) == true && Double.TryParse(memorys, out memory) == true && Int32.TryParse(jobinput, out jo) == true)

                {

                    if (os <= -1 || memory <= -1 || jo <= -1)

                    {

                        Console.WriteLine("Error of input");

                        Console.Write("\n\nPress enter to continue... ");

                        pause = Console.ReadLine();

                        Console.Clear();

                        foreach (string j in outputArray)

                        {

                            if (j != " ")

                            {

                                Console.WriteLine(j.ToString());

                            }

​

                            if (j == "Panlaqui, Ezzexckquiel Lledor M.")

                            {

                                Console.WriteLine();

                            }

                        }

                    }

​

                    else if (os >= 0 && memory >= 0 && jo >= 0)

                    {

                        List<double> aloc = new List<double>();

                        List<int> tatss = new List<int>();

                        double[] memos = new double[2];

                        allocation = memory - os;

                        aac = memory - os;

                        for (int r = 0; r < jo; r++)

                        {

                            Console.WriteLine("Memory size " + aac + "M ");

                            Console.WriteLine("OS size " + os + "M ");

                            Console.WriteLine("Enter job number " + (r + 1) + ": ");

                            inputss = Console.ReadLine();

                            if (Double.TryParse(inputss, out job) == true)

                            {

                                if ((job >= 0) && (job <= aac))

                                {

                                    aloc.Add(job);

                                    aac -= job;

                                }

                            }

                            else

                            {

                                Console.WriteLine("Wrong input for job, Please try again");

                                Console.Write("\n\nPress enter to continue... ");

                                pause = Console.ReadLine();

                                r--;

                                Console.Clear();

                                outputArray[r + 3] = " ";

                                foreach (string j in outputArray)

                                {

                                    if (j != " ")

                                    {

                                        Console.WriteLine(j.ToString());

                                    }

​

                                    if (j == "Panlaqui, Ezzexckquiel Lledor M.")

                                    {

                                        Console.WriteLine();

                                    }

                                }

                            }

​

                        }

                        for (int i = 0; i < jo; i++)

                        {

                            Console.WriteLine();

                            Console.WriteLine("Memory size " + allocation + "M ");

                            Console.WriteLine("OS size " + os + "M ");

                            Console.WriteLine("Enter TAT for job " + (i + 1) + ":");

                            input = Console.ReadLine();

                            if (Int32.TryParse(input, out time) == true)

                            {

                                if (time >= 0)

                                {

                                    tatss.Add(time);

                                }

                                else

                                {

                                    Console.WriteLine("Wrong input for Turn Around Time for the jobs, Please try again.");

                                    Console.WriteLine("Press enter to continue... ");

                                    pause = Console.ReadLine();

                                    i--;

                                    Console.Clear();

                                    outputArray[i + 3] = " ";

                                    foreach (string j in outputArray)

                                    {

                                        if (j != " ")

                                        {

                                            Console.WriteLine(j.ToString());

                                        }

​

                                        if (j == "Panlaqui, Ezzexckquiel Lledor M.")

                                        {

                                            Console.WriteLine();

                                        }

                                    }

                                }

                            }

                        }

                        memos[0] = aac;

                        memos[1] = os;

                        Console.Write("\n");

                        Console.WriteLine("Memory size: " + memos[0]);

                        Console.WriteLine("OS size: " + memos[1]);

                        Console.WriteLine("Job List:");

                        foreach (int e in aloc)

                        {

                            Console.WriteLine("Job" + (e + 1) + " " + aloc[e] + "K  ");

                        }

                        Console.Write("\n\nPress enter to continue... ");

                        pause = Console.ReadLine();

                        Console.WriteLine();

                        Console.WriteLine();

                        Console.WriteLine("Turn Around Time (TAT):");

                        foreach (int e in tatss)

                        {

                            Console.WriteLine("TAT " + (e + 1) + " " + tatss[e] + " ");

                        }

                        Console.Write("\n\nPress enter to continue... ");

                        pause = Console.ReadLine();

                        Console.WriteLine();

                        Console.WriteLine();

                        int set = 1;

                        int allocjobs = aloc.Count;

                        List<int> remove = new List<int>();

                        List<string> fails = new List<string>();

                        while (remove.Max() !=0)

                        {

                            Console.Clear();

                            Console.WriteLine("M3: ML- ACT7 Fixed Partition - First Fit");

                            Console.WriteLine("Panlaqui, Ezzexckquiel Lledor M.");

                            Console.WriteLine("Memory size: " + memos[0]);

                            Console.WriteLine("OS size: " + memos[1]);

                            Console.WriteLine("Number of Jobs: " + jo);

                            int ctr = 0;

                            Console.WriteLine("\nJob Lists:");

                            Console.WriteLine("\nJob\t\tSize\t\tTAT");

                            foreach (float j in aloc)

                            {

                                Console.Write("Job " + (ctr + 1));

                                Console.Write("\t\t" + j + "M");

                                Console.Write("\t\t" + tatss[ctr]);

                                Console.WriteLine("");

                                ctr++;

                            }

                            Console.WriteLine("\n");

                            ctr = 1;

                            Console.WriteLine("Set " + set);

                            Console.WriteLine("Memory\t\tParition Size\tAllocation");

                            Console.WriteLine("OS Partition" + "\t" + memos[1] + "M\t\tOS");

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

                            {

                                if ((allocation >= aloc[i]))

                                {

                                    if (remove[i] != 0)

                                    {

                                        Console.WriteLine("Partition " + ctr + "\t" + aloc[i] + "M\t\tJob " + (i + 1) + "\t\t\tTAT Left " + remove[i]);

                                        remove[i] -= 1;

                                        allocation -= aloc[i];

                                        ctr++;

                                    }

                                    else

                                    {

                                        continue;

                                    }

                                }

                                else

                                {

                                    if (aloc[i] > memory - os)

                                    {

                                        fails.Add("Job" + (i + 1) + "(" + aloc[i] + "M) TAT: " + tatss[i]);

                                        remove[i] = 0;

                                        allocjobs--;

                                    }

​

                                    continue;

                                }

                            }

                            if (allocation != 0)

                            {

                                Console.WriteLine("Partition " + ctr + "\t" + allocation + "M\t\tFree Memory Space");

                            }

                            allocation = memory - os;

                            set++;

                            Console.Write("\n\nPress enter to continue... ");

                            pause = Console.ReadLine();

                        }

                        Console.Clear();

                        Console.WriteLine("M3: ML- ACT7 Fixed Partition - First Fit");

                        Console.WriteLine("Panlaqui, Ezzexckquiel Lledor M.");

                        Console.WriteLine("Conclusion");

                        if (allocjobs == aloc.Count)

                        {

                            Console.WriteLine("All " + aloc.Count + " jobs are allocated succesfully.");

                            Console.WriteLine("There are " + set + " sets of allocation.");

                        }

                        else

                        {

                            List<string> outputFail = fails.Distinct().ToList();

                            Console.WriteLine("Memory Size: " + memory + "k");

                            Console.WriteLine("\nNot all jobs were succesfully allocated.");

                            Console.WriteLine("The following list of job/s that failed to allocate are displayed below:");

                            foreach (string i in outputFail)

                            {

                                Console.Write(i);

                                Console.Write("\n");

                            }

                        }

                    }

                }

                else

                {

                    Console.WriteLine("Invalid input of memory and os size");

                    Console.Clear();

                    foreach (string j in outputArray)

                    {

                        if (j != " ")

                        {

                            Console.WriteLine(j.ToString());

                        }

​

                        if (j == "Panlaqui, Ezzexckquiel Lledor M.")

                        {

                            Console.WriteLine();

                        }

                    }

                }

                Console.WriteLine("Do you like to continue the program? [Yes/No]");

                answer = Console.ReadLine();

            } while (answer == "Y" || answer == "y" || answer =="Yes" || answer == "yes");

            Console.WriteLine("Thank you for using the program.");

    }

}