no message

Author: Chris Wu

README.md

@@ -1,7 +1,10 @@
 # Leetcode Python Solution
 1. This is my Python Solution on leetcode `@christopherwu0529`.
 
-2. I really take time tried to make the best solution or explaination, because I wanted to help others like me. If you like my answer, a star on GitHub means a lot to me. <https://github.com/wuduhren/leetcode-python>.
+2. I really take time tried to make the best solution or explaination. 
+Because I wanted to help others like me. 
+If you like my answer, a star on GitHub means a lot to me. 
+https://github.com/wuduhren/leetcode-python>
 
 3. The question is at `https://leetcode.com/problems/the-file-name/`.
 

add-digits.py

@@ -1,11 +1,18 @@
 #https://leetcode.com/problems/add-digits/
 class Solution(object):
     def addDigits(self, num):
-        if num==0: return 0
-        
-        while len(str(num))>1:
-            counter = 0
-            for i in str(num):
-                counter+=int(i)
-            num = counter
-        return num
+        if num<10: return num
+        total = 0
+        while num>9:
+            total = 0
+            for d in str(num):
+                total+=int(d)
+            num = total
+        return num
+
+"""
+I really take time tried to make the best solution or explaination. 
+Because I wanted to help others like me. 
+If you like my answer, a star on GitHub means a lot to me. 
+https://github.com/wuduhren/leetcode-python
+"""