ExcelSheetColumnTitle*

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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"










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class Solution {
public:
	string convertToTitle(int n) {
		string result = "";
		while (n > 0) {
			char temp = (char)((n - 1) % 26 + 'A');
			result =  temp+result;
			n = (n - 1) / 26;
		}
		char *b = (char*)result.c_str();
		cout << b << endl;
		return result;
	}
};