Leet Code OJ 168. Excel Sheet Column Title [Difficulty: Easy]

题目：
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

翻译：
给定一个正数，返回它类似Excle中对应的列标题。

分析：
关联问题：“Excel Sheet Column Number”
实际为10进制转26进制，但是需要注意的地方是如果取模为0的时候，需要向前借位，否则结果就不正确了。

代码：

public class Solution {public String convertToTitle(int n) {String result="";while(true){int num=n%26;if(num==0){num=26;n-=26;}char c=(char)(num-1+'A');result=c+result;if(n<26){break;}n/=26;}return result;}
}

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