night

import java.util.Scanner;
import java.util.Arrays;

public class test {

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

        String [] alpha = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","1","2","3","4","5","6","7","8","9","0"," "};
        String [] dottie = {".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----.", "-----", "|"};

        System.out.println("Enter English to convert to English or Morse to convert to Morse:");

        String ans = input.nextLine();

        if(ans.equals("English"))
        {
            System.out.println( "Please enter the text you would like to convert to Morse Code: ");
            String english = input.nextLine();

            char [] translates = (english.toLowerCase()).toCharArray();
            System.out.println(toMorse(translates, dottie));


        }
        else if(ans.equals("Morse"))
        {
            System.out.println( "Please enter the text you would like to convert to English (separate words with '|'):");
            String code = input.nextLine();

            String[] translates = code.split("[|]", 0);
            System.out.println(toEnglish(translates, dottie, alpha));

        }
        else
            System.out.println("Invalid input, please try again.");
    }

    public static String toMorse(char [] translates, String [] dottie)
    {
        String morse = "";
        for (int j = 0; j < translates.length; j++)
        {
            char a = translates[j]; //.valueOf(j);
            if(Character.isLetter(a))
            {
                morse += dottie[a - 'a'];
            }
        }
        return morse;
    }

    // the current solution won't need alpha; but the other one (commented out), need it
    // for the sake of Something, I have kept the signature with 3 args.
    // uncomment the s+=alpha[k] line, comment the s+=Character... line and you should
    // have the solution using the alpha array to convert back. See explanation in the answer.
    public static String toEnglish(String [] translates, String  [] dottie, String[] alpha)
    {
        String s = "";
        for (int n = 0; n < translates.length; n++)
        {
            String a = translates[n];
            int k = Arrays.asList(dottie).indexOf(a);
            if (k >= 0) {
                //s += alpha[k];
                s += Character.toChars(k + 'a')[0];
            }
        }
        return s;
    }
}