05-Messages-FORMULA

package _03_RevisionMoreExcercises;

import java.util.Scanner;

public class _05_Messeges1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());

        for (int i = 1; i <= n; i++) {
            String input = scanner.nextLine();
            int numbersDigits = input.length();
            if (input.equals("0")) {
                System.out.print(" ");
            } else {
                int number = Integer.parseInt(input);
                int digit = number % 10;
                int offset = 0;
                if (digit == 8 || digit == 9) {
                    offset = (digit - 2) * 3 + 1;
                } else {
                    offset = (digit - 2) * 3;
                }
                int index = offset + numbersDigits - 1;
                System.out.print((char) (index + 97));
            }
        }
    }
}