diff --git a/src/helper.rs b/src/helper.rs
new file mode 100644
index 0000000..485f6fa
--- /dev/null
+++ b/src/helper.rs
@@ -0,0 +1,5 @@
+use std::cmp::{max, min};
+
+pub fn ordered<T: Ord + Copy>(x: T, y: T) -> (T, T) {
+    (min(x, y), max(x, y))
+}
diff --git a/src/main.rs b/src/main.rs
index 0db14ac..e569d9e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 mod card;
+mod helper;
 mod modes;
 
 fn main() {