README.md

168. Excel Sheet COlumn Title

Given a positive integer, return its corresponding column title as appear in an Excel sheet.

For example:

    1 -> A
    2 -> B
    3 -> C
    ...
    26 -> Z
    27 -> AA
    28 -> AB 
    ...

Example 1:

Input: 1
Output: "A"

Example 2:

Input: 28
Output: "AB"

Example 3:

Input: 701
Output: "ZY"

Solutions (Java)

class Solution {
public static String convertToTitle(int n) {
	StringBuilder stringBuilder = new StringBuilder();
	while (n != 0) {
		n--;
		stringBuilder.append((char) ('A' + n % 26));
		n /= 26;
	}
	return stringBuilder.reverse().toString();
    }
}