docs/ARRAY.md in lite-ruby-1.0.19 vs docs/ARRAY.md in lite-ruby-1.0.20

@@ -238,9 +238,18 @@
 
 ```ruby
 [:a,:b,:a,:c].positions(:a) #=> [1, 3]
 ```
 
+`rand_sample`
+------
+Returns a sample of random n values by size or given.
+
+```ruby
+[1, 2, 3].rand_sample    #=> [3, 2]
+[1, 2, 3].rand_sample(1) #=> [2]
+```
+
 `reject_values`
 ------
 Delete multiple values from a `dup` copy of the original array.
 
 ```ruby