diff --git a/find_max.rb b/find_max.rb
new file mode 100644
index 0000000..2c93e3f
--- /dev/null
+++ b/find_max.rb
@@ -0,0 +1,19 @@
+
+# Find the maximum element between index 0 and max_index, exclusive
+
+def find_max(array, max_index)
+  max = nil
+  if max_index == 0
+    puts "Array is empty"
+  else
+    max = array[0]
+    index = 0
+    while index < max_index
+      if max < array[index]
+        max = array[index]
+      end
+      index += 1
+    end
+  end
+  return max
+end