Sandbox::https://github.com/prashanthigupta/leetcode-algorithms/blob/master/src/ExcelSheetColumnTitle.java

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public class ExcelSheetColumnTitle {

public static void main(String[] args) {

System.out.println(convertToTitle(17576));

}

public static String convertToTitle(int number) {

return toBase26(number).toString();

}

private static StringBuilder toBase26(int number) {

StringBuilder result = new StringBuilder();

while (number != 0) {

result.append((char) (f(number % 26) + 'A' - 1));

number = (number - f(number % 26)) / 26;

}

return result.reverse();

}

private static int f(int number) {

return number == 0 ? 26 : number;

}