public static void FibonacciMerge(DiskFunctionality df, RunInfo ri, string tape1, string tape2, string tape3, bool show, bool showDiv)
{
int phases = 0;
int input1Runs = ri.GetRuns(tape1), input2Runs = ri.GetRuns(tape2);
string input1 = tape1, input2 = tape2, output = tape3;
Console.WriteLine("Phase " + phases + " finished. Tape content:");
if (show)
{
df.OpenReadStream(input1);
df.OpenReadStream(input2);
Console.WriteLine("\n" + input1 + " content:");
df.ShowFileContent(input1, showDiv);
Console.WriteLine("\n" + input2 + " content:");
df.ShowFileContent(input2, showDiv);
df.CloseStream(input1);
df.CloseStream(input2);
}
df.OpenReadStream(input1);
df.OpenReadStream(input2);
df.OpenSaveStream(output);
while (true)
{
if (input1Runs > input2Runs)
{
for (int i = 0; i < input2Runs; i++)
{
MergeRuns(df, input1, input2, output);
}
input1Runs -= input2Runs;
df.FlushRecordBuffer(output);
df.CloseStream(output);
df.CloseStream(input2);
phases++;
Console.WriteLine("Phase " + phases + " finished. Tape content:");
if (show)
{
df.OpenReadStream(output);
Console.WriteLine("\n" + input1 + " content:");
df.ShowFileContent(input1, showDiv);
Console.WriteLine("\n" + output + " content:");
df.ShowFileContent(output, showDiv);
df.CloseStream(output);
}
swap(ref input2, ref output);
df.OpenSaveStream(output);
df.OpenReadStream(input2);
}
else if (input1Runs < input2Runs)
{
for (int i = 0; i < input1Runs; i++)
{
MergeRuns(df, input1, input2, output);
}
input2Runs -= input1Runs;
df.FlushRecordBuffer(output);
df.CloseStream(output);
df.CloseStream(input1);
phases++;
Console.WriteLine("Phase " + phases + " finished. Tape content:");
if (show)
{
df.OpenReadStream(output);
Console.WriteLine("\n" + input2 + " content:");
df.ShowFileContent(input2, showDiv);
Console.WriteLine("\n" + output + " content:");
df.ShowFileContent(output, showDiv);
df.CloseStream(output);
}
swap(ref input1, ref output);
df.OpenSaveStream(output);
df.OpenReadStream(input1);
}
else if (input1Runs == 1 && input2Runs == 1)
{
MergeRuns(df, input1, input2, output);
df.CloseStream(input1);
df.CloseStream(input2);
df.FlushRecordBuffer(output);
df.CloseStream(output);
phases++;
Console.WriteLine("\n" + "File after sorting:");
df.OpenReadStream(output);
df.ShowFileContent(output, true);
df.CloseStream(output);
Console.WriteLine("Number of phases: " + phases);
return;
}
}
}
static void Main(string[] args)
{
int DISK_PAGE_SIZE = 4096;//MULTITUDE OF 4
string mainFileName = "MainFile.txt";
string tape1Name = "tape1.txt";
string tape2Name = "tape2.txt";
string tape3Name = "tape3.txt";
int amount;
int max;
bool showSum;
int option;
bool show;
RunInfo ri;
DiskFunctionality df = new DiskFunctionality(DISK_PAGE_SIZE, mainFileName, tape1Name, tape2Name, tape3Name);
Generator generator = new Generator(df);
Console.WriteLine("1 - Generate automatically");
Console.WriteLine("2 - Generate from keyboard");
Console.WriteLine("3 - Generate from file");
option = Int32.Parse(Console.ReadLine());
if (option == 1)
{
Console.WriteLine("Set amount of numbers");
amount = Int32.Parse(Console.ReadLine());
if (amount < 1)
{
Console.WriteLine("Amount of numbers must be grater than 0");
return;
}
Console.WriteLine("Set maximum value of a number");
max = Int32.Parse(Console.ReadLine());
if (max < 1)
{
Console.WriteLine("Maximum number must be grater than 0");
return;
}
generator.Generate(amount, max);
}
else if (option == 2)
{
amount = generator.GenerateFromKeyboard();
if (amount < 1)
{
Console.WriteLine("Amount of numbers must be grater than 0");
return;
}
}
else if (option == 3)
{
amount = generator.GenerateFromFile();
if (amount < 1)
{
Console.WriteLine("Amount of numbers must be grater than 0");
return;
}
}
Console.WriteLine("Show file after every phase of sorting? y/n");
string phaseAsnwear = Console.ReadLine();
if (phaseAsnwear == "y")
{
show = true;
}
else
{
show = false;
}
Console.WriteLine("Show sum of divisors next to each number? y/n");
string showSumAnswear = Console.ReadLine();
if (showSumAnswear == "y")
{
showSum = true;
}
else
{
showSum = false;
}
Console.WriteLine("File before sorting:");
df.OpenReadStream(mainFileName);
df.ShowFileContent(mainFileName, showSum);
df.CloseStream(mainFileName);
df.OpenReadStream(mainFileName);
Console.WriteLine("Number of runs in file: " + df.GetNumberOfRuns(mainFileName));
df.CloseStream(mainFileName);
ri = DivideBetweenTapes(df, mainFileName, tape1Name, tape2Name);
FibonacciMerge(df, ri, tape1Name, tape2Name, tape3Name, show, showSum);
int r = df.GetNumberOfReadOperations();
int w = df.GetNumberOfWriteOperations();
int sum = r + w;
Console.WriteLine("Number of disk operations: " + sum);
}
public static RunInfo DivideBetweenTapes(DiskFunctionality df, string main, string tape1, string tape2)
{
int record = -1, previousRecord;
int whichTape = 1, tape1Runs = 0, tape2Runs = 0, whichFibonacci = 0;
int fibbNumber = GetFibonacciNumber(whichFibonacci);
df.OpenReadStream(main);
df.OpenSaveStream(tape1);
df.OpenSaveStream(tape2);
while (true)
{
previousRecord = record;
record = df.ReadRecord(main);
if (record == -1)
{
break;
}
if (whichTape == 1)
{
if (Compare(previousRecord, record))
{
df.SaveRecord(record, tape1);
}
else
{
tape1Runs++;
if (tape1Runs == fibbNumber)
{
df.SaveRecord(record, tape2);
whichTape = 2;
whichFibonacci++;
fibbNumber = GetFibonacciNumber(whichFibonacci);
}
else
{
df.SaveRecord(record, tape1);
}
}
}
else
{
if (Compare(previousRecord, record))
{
df.SaveRecord(record, tape2);
}
else
{
tape2Runs++;
if (tape2Runs == fibbNumber)
{
df.SaveRecord(record, tape1);
whichTape = 1;
whichFibonacci++;
fibbNumber = GetFibonacciNumber(whichFibonacci);
}
else
{
df.SaveRecord(record, tape2);
}
}
}
}
if (whichTape == 1)// dummy runs
{
tape1Runs = GetFibonacciNumber(whichFibonacci);
}
else
{
tape2Runs = GetFibonacciNumber(whichFibonacci);
}
df.FlushRecordBuffer(tape1);
df.FlushRecordBuffer(tape2);
df.CloseStream(main);
df.CloseStream(tape1);
df.CloseStream(tape2);
Console.WriteLine("Divide finished. Sorting...");
return(new RunInfo(tape1Runs, tape2Runs));
}