public static ICollection <T> Unsort <T>(
this ICollection <T> collection,
URandom random = null)
{
if (collection == null)
{
return((ICollection <T>)null);
}
int[] numArray = new int[collection.Count];
for (int index = 0; index < numArray.Length; ++index)
{
numArray[index] = index;
}
for (int max = numArray.Length - 1; max > 0; --max)
{
int index = random == null?UnityEngine.Random.Range(0, max) : random.Range(0, max - 1, (string)null);
numArray[index] = numArray[index] + numArray[max];
numArray[max] = numArray[index] - numArray[max];
numArray[index] = numArray[index] - numArray[max];
}
List <T> objList = new List <T>();
for (int index = 0; index < numArray.Length; ++index)
{
objList.Add(collection.ElementAt <T>(numArray[index]));
}
return((ICollection <T>)objList);
}
public static Dictionary <N, M> Unsort <N, M>(
this IDictionary <N, M> dictionary,
URandom random = null)
{
if (dictionary == null)
{
return((Dictionary <N, M>)null);
}
int[] numArray = new int[dictionary.Count];
for (int index = 0; index < numArray.Length; ++index)
{
numArray[index] = index;
}
for (int max = numArray.Length - 1; max > 0; --max)
{
int index = random == null?UnityEngine.Random.Range(0, max) : random.Range(0, max - 1, (string)null);
numArray[index] = numArray[index] + numArray[max];
numArray[max] = numArray[index] - numArray[max];
numArray[index] = numArray[index] - numArray[max];
}
Dictionary <N, M> dictionary1 = new Dictionary <N, M>();
for (int index = 0; index < numArray.Length; ++index)
{
dictionary1.Add(dictionary.Keys.ElementAt <N>(numArray[index]), dictionary.Values.ElementAt <M>(numArray[index]));
}
return(dictionary1);
}
public static T GetRandom <T>(this IEnumerable <T> collection, URandom random, string key = null)
{
if (collection == null)
{
return(default(T));
}
T[] array = collection.ToArray <T>();
if (array.Length == 0)
{
return(default(T));
}
return(array[random.Range(0, array.Length - 1, key)]);
}