From fd3add587c806cc511eaa36265597108b15c8765 Mon Sep 17 00:00:00 2001
From: Jessica Kwok <jessicatckwok@gmail.com>
Date: Thu, 18 Mar 2021 13:15:19 -0700
Subject: [PATCH] Add solution without recursion

---
 data_structures/arrays/add_digits.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/data_structures/arrays/add_digits.rb b/data_structures/arrays/add_digits.rb
index e18d768..731236d 100644
--- a/data_structures/arrays/add_digits.rb
+++ b/data_structures/arrays/add_digits.rb
@@ -33,6 +33,27 @@ def add_digits(num)
   add_digits(sum)
 end
 
+# puts(add_digits(38))
+# # => 2
+
+# puts(add_digits(284))
+# # => 5
+
+#
+# Approach 2: Without recursion
+#
+def add_digits(num)
+  until num.to_s.length < 2
+    digits_to_sum = num.to_s.split('')
+    num = 0
+
+    digits_to_sum.each do |number|
+      num += number.to_i
+    end
+  end
+  num
+end
+
 puts(add_digits(38))
 # => 2