Easy
Quiz
#168 Excel Sheet Column Title
APPROACH
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:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
...
Example 2:
Input: columnNumber = 1
Output: "A"
Example 3:
Input: columnNumber = 28
Output: "AB"
Example 4:
Input: columnNumber = 701
Output: "ZY"
1 of 4
What is the optimal approach for this problem?