2022-03-15 22:38:41 +01:00

57 lines
1.4 KiB
C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.Linq;
namespace TomatenMusic.Util
{
static class CollectionUtil
{
public static void Shuffle<T>(this IList<T> list)
{
RNGCryptoServiceProvider provider = new RNGCryptoServiceProvider();
int n = list.Count;
while (n > 1)
{
byte[] box = new byte[1];
do provider.GetBytes(box);
while (!(box[0] < n * (Byte.MaxValue / n)));
int k = (box[0] % n);
n--;
T value = list[k];
list[k] = list[n];
list[n] = value;
}
}
/* public static void Remove<T>(this IList<T> list, T item)
{
List<T> newList = new List<T>();
bool done = false;
foreach (var i in list)
{
if (i.Equals(item) && !done)
{
done = true;
continue;
}
newList.Add(i);
}
list = newList;
}*/
public static class Arrays
{
public static IList<T> AsList<T>(params T[] source)
{
return source;
}
}
}
}