public static T Choose <T>(this T[] array, Pcg randomizer)
{
if (randomizer == null)
{
throw new ArgumentNullException(nameof(randomizer));
}
if (array.Length == 0)
{
throw new InvalidOperationException("Given Array has a length of zero, so no element can be returned.");
}
return(array[Convert.ToInt32(randomizer.Range32(Convert.ToUInt32(array.Length)))]);
}
public static T Choose <T>(this IList <T> list, Pcg randomizer)
{
if (randomizer == null)
{
throw new ArgumentNullException(nameof(randomizer));
}
if (list.Count == 0)
{
throw new InvalidOperationException("Given IList contains no elements, so no element can be returned.");
}
return(list[Convert.ToInt32(randomizer.Range32(Convert.ToUInt32(list.Count)))]);
}
public static void Shuffle <T>(this T[] array, Pcg randomizer)
{
if (randomizer == null)
{
throw new ArgumentNullException(nameof(randomizer));
}
int n = array.Length;
while (n > 0)
{
int rand = Convert.ToInt32(randomizer.Range32(Convert.ToUInt32(n--)));
T item = array[rand];
array[rand] = array[n];
array[n] = item;
}
}
public static void Shuffle <T>(this IList <T> list, Pcg randomizer)
{
if (randomizer == null)
{
throw new ArgumentNullException(nameof(randomizer));
}
int n = list.Count;
while (n > 0)
{
int rand = Convert.ToInt32(randomizer.Range32(Convert.ToUInt32(n--)));
T item = list[rand];
list[rand] = list[n];
list[n] = item;
}
}