lab3.1

package com.company;

import java.io.*;
import java.util.Arrays;
import java.util.Scanner;
import java.util.HashSet;

public class Main {
    static boolean Choic() {
        Scanner scanner = new Scanner(System.in);
        boolean IsCorrect = true;
        String Choice;
        boolean Console = true;
        while(IsCorrect) {
            System.out.println("If you want to enter data from the console, enter Y or y, and if from the file, enter N or n");
            Choice = scanner.nextLine();
            if ((Choice.equals("Y")) || (Choice.equals("y")) || (Choice.equals("N")) || (Choice.equals("n"))) {
                IsCorrect = false;
                if ((Choice.equals("Y")) || (Choice.equals("y"))) {
                    Console = true;
                }
                else {
                    Console = false;
                }
            }
            else {
                IsCorrect = true;
                System.out.println("This is mistake");
            }
        }
        return Console;
    }

    static StringBuffer EnterText() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the text. All special characters and numbers such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, /, -, _, =, +, @, #, $, %, ^, &, *, (, ) will be deleted.");
        StringBuffer Text = new StringBuffer(scanner.nextLine());
        return Text;
    }

    static StringBuffer EnterFileText() throws IOException {
        BufferedReader input = new BufferedReader(new FileReader("D:\\input.txt"));
        StringBuffer Text = new StringBuffer(input.readLine());
        return Text;
    }

    static StringBuffer EditText(boolean Choise) throws IOException {
        String[] StringArray = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "]", "}", "[", "{", "/", "-", "_", "=", "+", "@", "#", "$", "%", "^", "&", "*", "(", ")"};
        String[] StringArrays = {"!", ";", ":", ",", ".", "?"};
        HashSet<String> InvalidValues = new HashSet<String>(Arrays.asList(StringArray));
        HashSet<String> Values = new HashSet<String>(Arrays.asList(StringArrays));
        StringBuffer Text = new StringBuffer();
        if (Choise) {
            Text = EnterText();
        }
        else {
            Text = EnterFileText();
        }
        int Length = 0;
        int I = 1;
        Length = Text.length();
        while (I < Length) {
            if (InvalidValues.contains(Text.charAt(I))) {
                Text.delete(I,1);
                I--;
                Length--;
            }
            if ((Text.charAt(I) == ' ') && (Text.charAt(I + 1) == ' ')){
                Text.delete(I,1);
                I--;
                Length--;
            }
            if ((Values.contains(Text.charAt(I))) && (Values.contains(Text.charAt(I + 1)))) {
                Text.delete(I,1);
                I--;
                Length--;
            }
            I++;
        }
        return Text;
    }

    static void Encryption(boolean Choice) throws IOException {
        String[] StringArrays = {"!", ";", ":", ",", ".", "?"};
        HashSet<String> Values = new HashSet<String>(Arrays.asList(StringArrays));
        StringBuffer Text = new StringBuffer();
        Text = EditText(Choice);
        int Length = 0;
        int I = 1;
        Length = Text.length();
        String Temp;
        int Parity = 0;
        int Count = 0;
        while (I < Length) {
            Count++;
            if (Text.charAt(I) == ' ') {
                Parity++;
                if (Parity % 2 == 0) {
                    Temp = Text.substring(I - (Count - 1), I + 1);
                    Temp = Temp.toUpperCase();
                    Text.delete(I - (Count - 1), I + 1);
                    Text.insert(I - (Count - 1), Temp);
                    Count = 0;
                }
                else {
                    Text.insert(I - Count, "(");
                    Text.insert(I + 1, ")");
                    Length = Length + 2;
                    I = I + 2;
                    Count = 0;
                }
                if (Values.contains(Text.charAt(I + 1))) {
                    I++;
                }
            }
            if ((Values.contains(Text.charAt(I))) && (I < Length) && (Text.charAt(I - 1) != ' ')) {
                Parity++;
                if (Parity % 2 == 0) {
                    Temp = Text.substring(I - (Count - 1), I + 1);
                    Temp = Temp.toUpperCase();
                    Text.delete(I - (Count - 1), I + 1);
                    Text.insert(I - (Count - 1), Temp);
                    Count = 0;
                }
                else {
                    Text.insert(I - Count, "(");
                    Text.insert(I + 1, ")");
                    Length = Length + 2;
                    I = I + 2;
                    Count = 0;
                }
                if (Values.contains(Text.charAt(I + 1))) {
                    I++;
                }
            }
            if ((I == Length - 1) && (Values.contains(Text.charAt(I)))) {
                Parity++;
                if (Parity % 2 == 0) {
                    Temp = Text.substring(I - (Count - 1), I + 1);
                    Temp = Temp.toUpperCase();
                    Text.delete(I - (Count - 1), I + 1);
                    Text.insert(I - (Count - 1), Temp);
                    Count = 0;
                }
                else {
                    Length = Length + 2;
                    Text.insert(I - (Count - 1), "(");
                    Text.insert(I + 1, ")");
                    I = I + 2;
                    Count = 0;
                }
            }
            else {
                if (I == Length - 1) {
                    Parity++;
                    if (Parity % 2 == 0) {
                        Temp = Text.substring(I - (Count - 1), I + 1);
                        Temp = Temp.toUpperCase();
                        Text.delete(I - (Count - 1), I + 1);
                        Text.insert(I - (Count - 1), Temp);
                        Count = 0;
                    }
                    else {
                        Length = Length + 2;
                        Text.insert(I - (Count - 1) , "(");
                        Text.insert(I + 2, ")");
                        I = I + 2;
                        Count = 0;
                    }
                }
            }
            I++;
        }
        if (Choice) {
            System.out.println(Text);
        } else {
            System.out.println(Text);
            File file = new File("D:\\output.txt");
            PrintWriter prwr = new PrintWriter(file);
            prwr.print(Text);
            prwr.close();
        }
    }

    static void body() throws IOException {
        boolean Choice = Choic();
        Encryption(Choice);
    }
    public static void main(String[] args) throws IOException {
       System.out.println("This program in the text in every even word replaces all lowercase alphabetic characters with uppercase, and each odd word is enclosed in parentheses");
       body();
    }
}