From 0e1e6a0d9cf49185a064ea85c4a54ea1da156d90 Mon Sep 17 00:00:00 2001
From: James Walker <walkah@walkah.net>
Date: Mon, 22 Oct 2018 11:49:29 -0400
Subject: [PATCH] ruby - collatz-conjecture

---
 ruby/collatz-conjecture/collatz_conjecture.rb | 22 +++++++------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/ruby/collatz-conjecture/collatz_conjecture.rb b/ruby/collatz-conjecture/collatz_conjecture.rb
index 939762f..d891b13 100644
--- a/ruby/collatz-conjecture/collatz_conjecture.rb
+++ b/ruby/collatz-conjecture/collatz_conjecture.rb
@@ -1,17 +1,11 @@
+# CollatzConjecture class
 class CollatzConjecture
-  def self.steps(n, count = 0)
-    if n < 1
-      raise ArgumentError
-    elsif n == 1
-      count
-    else
-      count += 1
-      if n % 2 == 0
-        number = n / 2
-      else
-        number = (3 * n) + 1
-      end
-      steps(number, count)
-    end
+  def self.steps(num, count = 0)
+    raise ArgumentError if num < 1
+    return count if num == 1
+
+    count += 1
+    number = num.even? ? num / 2 : (3 * num) + 1
+    steps(number, count)
   end
 end