package com.company;

import java.util.Scanner;

public class Main {
    static String NotEq = "Digit capacity is not equal, try again";
    static String ValidErr = "Validation: Entered value is no integer";

    static int EnterValue(String msg) {
        Scanner in = new Scanner(System.in);
        try {
            System.out.println(msg);
            return in.nextInt();
        } catch (Exception ex) {
            in.nextLine();
            System.out.println(ValidErr);
            return EnterValue(msg);
        }
    }

    static boolean CheckValue(int Max, int Min, int Num) {
        if (Max < Num || Num < Min) {
            System.out.println("Ur value is not belongs [" + Min + " ; " + Max + "]");
            return false;
        }
        return true;
    }

    static void PrintArray(String msg, int[] array) {
        System.out.println(msg);
        for (int i = array.length - 1; i >= 0; i--) {
            if (i != array.length - 1) {
                System.out.print(", ");
            }
            System.out.print(array[i]);
        }
    }

    static int EnterCheckValue(int Max, int Min, int Num, String msg) {
        Scanner in = new Scanner(System.in);
        do {
            Num = EnterValue(msg);
        }
        while (!CheckValue(Max, Min, Num));
        return Num;
    }

    static int CheckCapacity(int Num) {
        int i = 1;
        do {
            Num /= 10;
            i++;
        } while (Num / 10 != 0);
        return i;
    }

    static boolean BitComparison(int Num1, int Num2) {
        if (CheckCapacity(Num1) != CheckCapacity(Num2)) {
            System.out.println(NotEq);
            return false;
        }
        return true;
    }

    static int[] ArraySplit(int[] Arr, int Num) {
        for (int i = 0; i < Arr.length; i++) {
            Arr[i] = Num % 10;
            Num = Num / 10;
        }
        return Arr;
    }

    public static void main(String[] args) {
        final int MaxValue = 9999999;
        final int MinValue = 100;
        int FirstNum = 0;
        int SecondNum = 0;
        do {
            FirstNum = EnterCheckValue(MaxValue, MinValue, FirstNum, "Enter first num");
            SecondNum = EnterCheckValue(MaxValue, MinValue, SecondNum, "Enter second num");
        } while (!BitComparison(FirstNum, SecondNum));
        int[] ArrOf1 = new int[CheckCapacity(FirstNum)];
        int[] ArrOf2 = new int[CheckCapacity(SecondNum)];
        ArrOf1 = ArraySplit(ArrOf1, FirstNum);
        ArrOf2 = ArraySplit(ArrOf2, SecondNum);
        for (int i = 0; i < ArrOf1.length; i++) {
            ArrOf1[i] -= ArrOf2[i];
        }
        PrintArray("Final array", ArrOf1);
    }
}