diff --git a/binarygap.rb b/binarygap.rb
new file mode 100644
index 0000000..640b718
--- /dev/null
+++ b/binarygap.rb
@@ -0,0 +1,11 @@
+def solution(n)
+  collection_of_zero = []
+  collection_of_zero = n.to_s(2)[0, n.to_s(2).rindex('1')].split("1")
+  x= 0
+  a = 0
+  while x < collection_of_zero.length
+    a = a > collection_of_zero[x].length ? a : collection_of_zero[x].length
+    x += 1
+  end
+  a
+end