.NET-随机数Random（.NET 8）

一、线程安全的Random

Random random = Random.Shared;

二、从数组中随机获取几个值

int[] ints = new int[] { 1, 2, 3, 4, 5 };
Random random = Random.Shared;
var results =  random.GetItems(ints, 2);
foreach(var item in results)
{
    Console.WriteLine(item);
}

三、乱序某个集合

int[] ints = new int[] { 1, 2, 3, 4, 5 };
Random random = Random.Shared;
random.Shuffle(ints);
foreach(var item in ints)
{
    Console.WriteLine(item);
}