From dd8e2afae6b808237c0a9b405aa5d544131ad87f Mon Sep 17 00:00:00 2001
From: gerroo <gerensuner@gmail.com>
Date: Sun, 28 Oct 2018 13:23:19 -0800
Subject: [PATCH] Added 3n+1

---
 Maths/3n+1.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 Maths/3n+1.py

diff --git a/Maths/3n+1.py b/Maths/3n+1.py
new file mode 100644
index 00000000..e1b82d39
--- /dev/null
+++ b/Maths/3n+1.py
@@ -0,0 +1,14 @@
+def n31(a):# a = initial number
+    c = 0
+    l = [a]
+    while a != 1:
+        if a % 2 == 0:#if even divide it by 2
+            a = a // 2
+        elif a % 2 == 1:#if odd 3n+1
+            a = 3*a +1
+        c += 1#counter
+        l += [a]
+        print(a)#optional print
+    print("It took {0} steps.".format(c))#optional finish
+    return l , c
+print(n31(43))