Unity Shuffle list
"https://stackoverflow.com/a/63348412"
public static class ListUtils {
public static void Shuffle<T>(this IList<T> list, Random rnd)
{
for (var i = list.Count-1; i > 0; i--)
{
var randomIndex = rnd.Next(i + 1); //maxValue (i + 1) is EXCLUSIVE
list.Swap(i, randomIndex);
}
}
public static void Swap<T>(this IList<T> list, int indexA, int indexB)
{
var temp = list[indexA];
list[indexA] = list[indexB];
list[indexB] = temp;
}
}
//Usage
List<int> list = new List<int> { 1, 2, 3, 4};
list.Shuffle();