1

Src/Core/Extensions/IEnumerable.cs

@@ -2,6 +2,8 @@
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
+using Unity.Mathematics;
+using Random = System.Random;
 
 namespace BITKit
 {
@@ -198,6 +200,22 @@ namespace BITKit
         {
             return self[typeof(TKey)];
         }
+
+        public static TValue[] TakeRandom<TValue>(this TValue[] self, int count)
+        {
+            //自动实现
+            var random = new Random();
+            var newList = self.ToList();
+            count = math.min(count, newList.Count);
+            var result = new TValue[count];
+            for (var i = 0; i < count; i++)
+            {
+                var value = newList[random.Next(0, newList.Count)];
+                newList.Remove(value);
+                result[i] = value;
+            }
+            return result;
+        }
         public static TValue Get<TKey, TValue>(this IDictionary<TKey, TValue> self, TKey key) where TValue : new()
         {
             lock (self)