package com.company;

public class NumberToWords {
    public static void numberToWords(int number){
        if(number < 0){
            System.out.println("Invalid Value");
        }

        int container = reverse(number);
        int digitCountNumber = getDigitCount(number);
        int remainder = 0;

        while(digitCountNumber > 0) {
            remainder = container % 10;
            container /= 10;
            digitCountNumber--;
            switch (remainder) {
                case 0:
                    System.out.println("Zero");
                    break;
                case 1:
                    System.out.println("One");
                    break;
                case 2:
                    System.out.println("Two");
                    break;
                case 3:
                    System.out.println("Three");
                    break;
                case 4:
                    System.out.println("Four");
                    break;
                case 5:
                    System.out.println("Five");
                    break;
                case 6:
                    System.out.println("Six");
                    break;
                case 7:
                    System.out.println("Seven");
                    break;
                case 8:
                    System.out.println("Eight");
                    break;
                case 9:
                    System.out.println("Nine");
                    break;
            }
        }
    }

    public static int reverse(int number){
        int reversedNumber = 0;
        int remainder = 0;

        while(number != 0){
            remainder = number % 10;
            reversedNumber = reversedNumber * 10 + remainder;
            number /= 10;
        }
        return reversedNumber;
    }

    public static int getDigitCount(int number){
        if(number < 0){
            return -1;
        }
        if(number == 0){
            return 1;
        }

        int counter = 0;
        while(number != 0){
            counter++;
            number /= 10;
        }
        return counter;
    }
}