Excel Sheet Column Title(C++)

168.Excel Sheet Column Title

Problem description:

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

Difficulty:Easy
class Solution {

public:

string convertToTitle(int n) {

std::string titleStr = "";

int result = n;

int remain = 0;

char tmpc;

while(result != 0)

{

remain = result%26;

result = result/26;

if (remain == 0 && result != 0)

{

result--;

tmpc = 'Z';

}

else

{

tmpc = (remain +64) + '\0';

}

titleStr = tmpc + titleStr;

}

return titleStr;

}

};