Given an integer columnNumber, return its corresponding column title as it appears in an Excel sheet.
For example:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
...
Example 1:
Input: columnNumber = 1
Output: "A"
Example 2:
Input: columnNumber = 28
Output: "AB"
Example 3:
Input: columnNumber = 701
Output: "ZY"
Solution
class Solution:
def convertToTitle(self, columnNumber: int) -> str:
out = ''
while columnNumber > 0:
columnNumber -= 1
out = chr(columnNumber % 26 + 65) + out
columnNumber //= 26
return out