Excel Sheet Column Title

Problem Link - https://leetcode.com/problems/excel-sheet-column-title/

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Solution

    class Solution {
    public:
        string convertToTitle(int n) {
            string ans = "";
            while(n) {
                char ch = ('A' + (n - 1) % 26);
                ans = ch + ans;
                n = (n - 1) / 26;
            }
            return ans;
        }
    };