added random extension for Arrays

Runtime/Extensions/ArrayExtensions.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using UnityFlow.DocumentationHelper.Library.Documentation;
 
 namespace OmegaLeo.Toolbox.Runtime.Extensions
@@ -16,5 +18,48 @@ public static T Next<T>(this T[] array, ref int currentIndex)
         {
             return array[currentIndex++ % array.Length];
         }
+
+        /// <summary>
+        /// Method to obtain a random element from inside a list
+        /// </summary>
+        /// <param name="array"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public static T Random<T>(this T[] array)
+        {
+            if (array.Length == 0) return default;
+
+            // Updated based on Robin King's tip about random items https://twitter.com/quoxel/status/1729137730607841755/photo/1
+            int seed = (int)DateTime.Now.Ticks;
+
+            var r = UnityEngine.Random.Range(0, array.Length);
+
+            var returnValue = array[r];
+
+            return returnValue ?? array.FirstOrDefault();
+
+        }
+
+        /// <summary>
+        /// Method to obtain <paramref name="count"/> elements from inside a list
+        /// </summary>
+        /// <param name="array"></param>
+        /// <param name="count"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        /// <exception cref="ArgumentOutOfRangeException"></exception>
+        public static T[] Random<T>(this T[] array, int count = 1)
+        {
+            if (count <= 0) throw new ArgumentOutOfRangeException(nameof(count));
+
+            List<T> values = new List<T>();
+
+            for (int i = 0; i < count; i++)
+            {
+                values.Add(array.Where(x => !values.Contains(x)).ToList().Random());
+            }
+
+            return values.ToArray();
+        }
     }
 }