class Solution:
# @return a string
def convertToTitle(self, num):
s = ""
while num > 0:
r = (num - 1) % 26 + 1
s = chr(ord('A') + r - 1) + s
num = (num - r) / 26
return s
class Solution:
# @return a string
def convertToTitle(self, num):
s = ""
while num > 0:
r = (num - 1) % 26 + 1
s = chr(ord('A') + r - 1) + s
num = (num - r) / 26
return s