private void Awake()
{
List <int> list = new List <int>()
{
8, 3, -2, 39, 1290, 199, -29, 55, 1, 0
};
Pcg randomizer = new Pcg();
list.Shuffle(randomizer);
StringBuilder builder = new StringBuilder();
builder.Append("Output:");
foreach (int item in list)
{
builder.Append('\n').Append(item.ToString());
}
Debug.Log(builder.ToString());
/* Should always be in this order after the shuffle *
* -29, 3, -2, 199, 55, 8, 0, 1, 39, 1290 */
Assert.AreEqual(-29, list[0]);
Assert.AreEqual(3, list[1]);
Assert.AreEqual(-2, list[2]);
Assert.AreEqual(199, list[3]);
Assert.AreEqual(55, list[4]);
Assert.AreEqual(8, list[5]);
Assert.AreEqual(0, list[6]);
Assert.AreEqual(1, list[7]);
Assert.AreEqual(39, list[8]);
Assert.AreEqual(1290, list[9]);
}
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 T Take <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.");
}
T item = Choose(list, randomizer);
list.Remove(item);
return(item);
}
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;
}
}