public async Task <T[]> SortParallel <T>(T[] input) where T : IComparable
{
if (input.Length <= 1)
{
return(input);
}
int middle = input.Length / 2;
T[] inputA = SortingUtils.Take(input, 0, middle);
T[] inputB = SortingUtils.Take(input, middle, input.Length);
Task tA = Task.Run(() => Sort(inputA));
Task tB = Task.Run(() => Sort(inputB));
await Task.WhenAll(tA, tB);
int iA = 0, iB = 0;
for (int i = 0; i < input.Length; i++)
{
if (iA == inputA.Length)
{
input[i] = inputB[iB];
iB++;
}
else if (iB == inputB.Length)
{
input[i] = inputA[iA];
iA++;
}
else if (inputA[iA].CompareTo(inputB[iB]) < 0)
{
input[i] = inputA[iA];
iA++;
}
else
{
input[i] = inputB[iB];
iB++;
}
}
return(input);
}
public T[] Sort <T>(T[] input) where T : IComparable
{
if (input.Length <= 1)
{
return(input);
}
int middle = input.Length / 2;
T[] inputA = SortingUtils.Take(input, 0, middle);
T[] inputB = SortingUtils.Take(input, middle, input.Length);
Sort(inputA);
Sort(inputB);
int iA = 0, iB = 0;
for (int i = 0; i < input.Length; i++)
{
if (iA == inputA.Length)
{
input[i] = inputB[iB];
iB++;
}
else if (iB == inputB.Length)
{
input[i] = inputA[iA];
iA++;
}
else if (inputA[iA].CompareTo(inputB[iB]) < 0)
{
input[i] = inputA[iA];
iA++;
}
else
{
input[i] = inputB[iB];
iB++;
}
}
return(input);
}
