168. Excel Sheet Column Title - jiejackyzhang/leetcode-note GitHub Wiki

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

实际上是一个26进制数的转换问题。

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