async public Task <SlowString> Last(SlowString other)
{
if (Debug)
{
Console.WriteLine("Poczatek Last");
}
SlowString result = await Task.Run <SlowString>(() =>
{
Thread.Sleep(Delay);
int comparison = Value.CompareTo(other.Value);
if (comparison < 0)
{
return(other);
}
return(this);
});
if (Debug)
{
Console.WriteLine("Koniec Last");
}
return(result);
}
async public static Task <SlowString> Last(this SlowString[] array, bool debug = false)
{
if (array.Length == 0)
{
return(null);
}
SlowString result = array[0];
for (int i = 1; i < array.Length; i++)
{
result = await result.Last(array[i]);
}
return(result);
}
async public Task <bool> Equal(SlowString other)
{
if (Debug)
{
Console.WriteLine("Początek Equal");
}
bool result = await Task.Run <bool>(() =>
{
Thread.Sleep(Delay);
return(other.Value.Equals(Value));
});
if (Debug)
{
Console.WriteLine("Koniec Equal");
}
return(result);
}
async public Task <bool> GreaterThan(SlowString other)
{
if (Debug)
{
Console.WriteLine("Poczatek GreaterThan");
}
bool result = await Task.Run <bool>(() =>
{
Thread.Sleep(Delay);
return(Value.CompareTo(other.Value) > 0);
});
if (Debug)
{
Console.WriteLine("Koniec GreaterThan");
}
return(result);
}
async public Task <SlowString> Concatenate(SlowString other)
{
if (Debug)
{
Console.WriteLine("Poczatek Concatenate");
}
SlowString result = await Task.Run <SlowString>(() =>
{
Thread.Sleep(Delay);
return(new SlowString(Value + other.Value, Debug, Delay));
});
if (Debug)
{
Console.WriteLine("Koniec Concatenate");
}
return(result);
}
async public static Task <SlowString> Concatenate(this SlowString[] array)
{
if (array.Length == 0)
{
return(null);
}
SlowString[] elementsLeft = array;
while (elementsLeft.Length > 1)
{
int newSize = (int)Math.Ceiling((decimal)elementsLeft.Length / 2);
Task <SlowString>[] tasks = new Task <SlowString> [newSize];
for (int i = 0; i < newSize; i++)
{
if (2 * i + 1 >= elementsLeft.Length)
{
tasks[i] = Task.Run <SlowString>(() => elementsLeft[2 * i - 2]);
}
else
{
tasks[i] = elementsLeft[2 * i].Concatenate(elementsLeft[2 * i + 1]);
}
}
Task.WaitAll(tasks);
SlowString[] newElements = new SlowString[newSize];
for (int i = 0; i < tasks.Length; i++)
{
newElements[i] = tasks[i].Result;
}
elementsLeft = newElements;
}
return(elementsLeft[0]);
}
private async static Task RunTestsAsync()
{
Console.WriteLine("=== ETAP 1 ===");
var a = new SlowString("ab", true);
var b = new SlowString("c", true);
var result1 = a.Equal(b);
var result2 = b.Last(b);
var result3 = b.GreaterThan(a);
result1.Wait();
result2.Wait();
result3.Wait();
Console.WriteLine();
Console.WriteLine("Results: {0}, {1}, {2}", result1.Result, result2.Result, result3.Result);
Console.WriteLine();
var result4 = await a.Equal(a);
var result5 = await a.Last(b);
var result6 = await a.GreaterThan(a);
Console.WriteLine();
Console.WriteLine("Results: {0}, {1}, {2}", result4, result5, result6);
Console.WriteLine();
Console.WriteLine("=== ETAP 2 ===");
var array1 = new SlowString[]
{
new SlowString("a", true), new SlowString("b", true), new SlowString("abc", true), new SlowString("bc", true)
};
var last1 = await array1.Last(true);
var array2 = new SlowString[60];
for (int i = 0; i < 60; ++i)
{
array2[i] = new SlowString(i.ToString(), false, 1);
}
var last2 = await array2.Last();
Console.WriteLine();
Console.WriteLine("Results: {0}, {1}", last1, last2);
Console.WriteLine();
Console.WriteLine("=== ETAP 3 ===");
var max1 = array1.Concatenate();
var max2 = array2.Concatenate();
max1.Wait();
max2.Wait();
Console.WriteLine();
Console.WriteLine("Results: {0}, {1}", max1.Result, max2.Result);
Console.WriteLine();
}