Leetcode Excel Sheet Column Title problem solution

In this Leetcode Excel Sheet Column Title problem solution we have Given an integer columnNumber, return its corresponding column title as it appears in an Excel sheet.

Problem solution in Python.

import string
class Solution(object):
    def convertToTitle(self, n):
        alph = string.ascii_uppercase
        res = ""
        while n:
            n, r = (n-1)//26, (n-1)%26
            res += alph[r]
        return (res[::-1])

Problem solution in Java.

class Solution {
    public String convertToTitle(int n) {

        StringBuilder result = new StringBuilder();
        while(n>0){
            n--;
         
            char toAdd = (char)((n % 26) + 65);
            result.insert(0,toAdd);
            
            n = n/26;
            
        }
        return result.toString();
        
    }
}

Problem solution in C++.

string convertToTitle(int n) {
		string res = "";
		while(n>0)
		{
			int i =(n-1)%26; 
			res = (char)('A'+i) + res;
			n=(n-1)/26;
		}
		return res;
	}

Problem solution in C.

char *convertToTitle(int n) {
    char *s;
    int fac = 26, char_size = 0, num = n, i = 1;
    while(num > 0) {
        num = (num - 1) / 26;
        char_size++;
    }
    s=(char*)malloc(char_size*sizeof(char));
    while(n>0){
        n--;
        *(s+char_size-i) = (char)(n%fac +'A') + *s;
        n/=fac;
        i++;
    }
    return s;
}