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
给定一个正整数,返回它作为出现在Excel表中的正确列向标题。相当于26进制。
代码如下:
1 class Solution { 2 public: 3 string convertToTitle(int n) { 4 string ss; 5 while(n > 0) 6 { 7 ss = (char)(--n % 26 + 'A') + ss; 8 n /= 26; 9 } 10 return ss; 11 } 12 };