public static void SelectionSort <T>(T[] collection, Comparer <T> comparer = null) where T : IComparable
{
AssertionUtils.AssertCollection(collection);
comparer = comparer ?? Comparer <T> .Default;
for (int i = 0; i < collection.Length - 1; i++)
{
int minInd = i;
for (int j = i + 1; j < collection.Length; j++)
{
if (comparer.Compare(collection[i], collection[j]) > 0)
{
minInd = j;
}
}
if (minInd != i)
{
T temp = collection[i];
collection[i] = collection[minInd];
collection[minInd] = temp;
}
}
AssertionUtils.IsSorted(collection);
}
public static void QuickSort <T>(T[] collection, Comparer <T> comparer = null) where T : IComparable
{
AssertionUtils.AssertCollection(collection);
comparer = comparer ?? Comparer <T> .Default;
QuickSort_Recursive(collection, 0, collection.Length - 1, comparer);
AssertionUtils.IsSorted(collection);
}
public static void InsertionSort <T>(T[] collection, Comparer <T> comparer = null) where T : IComparable
{
AssertionUtils.AssertCollection(collection);
comparer = comparer ?? Comparer <T> .Default;
for (int i = 0; i < collection.Length - 1; i++)
{
int index = i + 1;
while (index > 0)
{
if (comparer.Compare(collection[index - 1], collection[index]) > 0)
{
T temp = collection[index - 1];
collection[index - 1] = collection[index];
collection[index] = temp;
}
--index;
}
}
AssertionUtils.IsSorted(collection);
}