Data update

Task/Sorting-algorithms-Stooge-sort/Crystal/sorting-algorithms-stooge-sort.cr

@@ -0,0 +1,20 @@
+module Indexable::Mutable
+  def stooge_sort!
+    stooge_sort_impl 0, size-1
+    self
+  end
+
+  private def stooge_sort_impl (i, j)
+    swap(i, j) if self[i] > self[j]
+    if j - i + 1 > 2
+      t = (j - i + 1) // 3
+      stooge_sort_impl i,   j-t
+      stooge_sort_impl i+t, j
+      stooge_sort_impl i,   j-t
+    end
+  end
+end
+
+arr = Array(Int32).new(15) { (-50..100).sample }
+puts "before: #{arr}"
+puts "after:  #{arr.stooge_sort!}"