Update excel-sheet-column-title.py

kamyu104 · web-flow · commit d7a34e310e24 · 2016-07-19T23:04:48.000+08:00
diff --git a/Python/excel-sheet-column-title.py b/Python/excel-sheet-column-title.py
@@ -1,6 +1,6 @@
 # Time:  O(logn)
 # Space: O(1)
-#
+
 # Given a positive integer, return its corresponding column title as appear in an Excel sheet.
 # 
 # For example:
@@ -12,19 +12,22 @@
 #     26 -> Z
 #     27 -> AA
 #     28 -> AB 
-#
 
-class Solution:
-    # @return a string
-    def convertToTitle(self, num):
+class Solution(object):
+    def convertToTitle(self, n):
+        """
+        :type n: int
+        :rtype: str
+        """
         result, dvd = "", num
         
         while dvd:
             result += chr((dvd - 1) % 26 + ord('A'))
             dvd = (dvd - 1) / 26
         
         return result[::-1]
-        
+
+
 if __name__ == "__main__":
     for i in xrange(1, 29):
-        print Solution().convertToTitle(i)
+        print Solution().convertToTitle(i)
