Question

我有一些代码可以随机化一个提取的结果列表，但是我更喜欢不将随机变量作为提取结果的一部分，任何想法？这是我的代码：

var rnd = new Random();

var numList = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var extracted = (from n1 in numList
                 from n2 in numList
                 from n3 in numList
                 from n4 in numList
                     where n1 + n2 + n3 + n4 > 20
                 select new { n1, n2, n3, n4, Rnd = rnd.NextDouble() })
                 .OrderBy(z => z.Rnd).ToList();

Answer 1

如果您需要随机化输出，只需按随机值排序，而不将它们包含在所选数据中：

var rnd = new Random();
var numList = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8, 9 };

var extracted =  from n1 in numList
                 from n2 in numList
                 from n3 in numList
                 from n4 in numList
                 where n1 + n2 + n3 + n4 > 20
                 orderby rnd.NextDouble()
                 select new { n1, n2, n3, n4 }; // you can use ToList()

随机化但排除随机变量

1 个答案: