FS.java

 
package acm;
 
import java.util.ArrayList;
import java.util.Scanner;
 
/**
 *
 * @author dusenka
 */
public class FS {
    public FS(){
    }
 
    public String toLetter(String letter){
        if(letter.equalsIgnoreCase(".-")){
            return "A";
        }
        else if(letter.equalsIgnoreCase("-...")){
            return "B";
        }
        else if(letter.equalsIgnoreCase("-.-.")){
            return "C";
        }
        else if(letter.equalsIgnoreCase("-..")){
            return "D";
        }
        else if(letter.equalsIgnoreCase(".")){
            return "E";
        }
        else if(letter.equalsIgnoreCase("..-.")){
            return "F";
        }
        else if(letter.equalsIgnoreCase("--.")){
            return "G";
        }
        else if(letter.equalsIgnoreCase("....")){
            return "H";
        }
        else if(letter.equalsIgnoreCase("..")){
            return "I";
        }
        else if(letter.equalsIgnoreCase(".---")){
            return "J";
        }
        else if(letter.equalsIgnoreCase("-.-")){
            return "K";
        }
        else if(letter.equalsIgnoreCase(".-..")){
            return "L";
        }
        else if(letter.equalsIgnoreCase("--")){
            return "M";
        }
        else if(letter.equalsIgnoreCase("-.")){
            return "N";
        }
        else if(letter.equalsIgnoreCase("---")){
            return "O";
        }
        else if(letter.equalsIgnoreCase(".--.")){
            return "P";
        }
        else if(letter.equalsIgnoreCase("--.-")){
            return "Q";
        }
        else if(letter.equalsIgnoreCase(".-.")){
            return "R";
        }
        else if(letter.equalsIgnoreCase("...")){
            return "S";
        }
        else if(letter.equalsIgnoreCase("-")){
            return "T";
        }
        else if(letter.equalsIgnoreCase("..-")){
            return "U";
        }
        else if(letter.equalsIgnoreCase("...-")){
            return "V";
        }
        else if(letter.equalsIgnoreCase(".--")){
            return "W";
        }
        else if(letter.equalsIgnoreCase("-..-")){
            return "X";
        }
        else if(letter.equalsIgnoreCase("-.--")){
            return "Y";
        }
        else if(letter.equalsIgnoreCase("--..")){
            return "Z";
        }
        else if(letter.equalsIgnoreCase("..--")){
            return "_";
        }
        else if(letter.equalsIgnoreCase(".-.-")){
            return ",";
        }
        else if(letter.equalsIgnoreCase("---.")){
            return ".";
        }
        else if(letter.equalsIgnoreCase("----")){
            return "?";
        }
        return "";
    }
    public String toMorse(String letter){
        if(letter.equalsIgnoreCase("A")){
            return ".-";
        }
        else if(letter.equalsIgnoreCase("B")){
            return "-...";
        }
        else if(letter.equalsIgnoreCase("C")){
            return "-.-.";
        }
        else if(letter.equalsIgnoreCase("D")){
            return "-..";
        }
        else if(letter.equalsIgnoreCase("E")){
            return ".";
        }
        else if(letter.equalsIgnoreCase("F")){
            return "..-.";
        }
        else if(letter.equalsIgnoreCase("G")){
            return "--.";
        }
        else if(letter.equalsIgnoreCase("H")){
            return "....";
        }
        else if(letter.equalsIgnoreCase("I")){
            return "..";
        }
        else if(letter.equalsIgnoreCase("J")){
            return ".---";
        }
        else if(letter.equalsIgnoreCase("K")){
            return "-.-";
        }
        else if(letter.equalsIgnoreCase("L")){
            return ".-..";
        }
        else if(letter.equalsIgnoreCase("M")){
            return "--";
        }
        else if(letter.equalsIgnoreCase("N")){
            return "-.";
        }
        else if(letter.equalsIgnoreCase("O")){
            return "---";
        }
        else if(letter.equalsIgnoreCase("P")){
            return ".--.";
        }
        else if(letter.equalsIgnoreCase("Q")){
            return "--.-";
        }
        else if(letter.equalsIgnoreCase("R")){
            return ".-.";
        }
        else if(letter.equalsIgnoreCase("S")){
            return "...";
        }
        else if(letter.equalsIgnoreCase("T")){
            return "-";
        }
        else if(letter.equalsIgnoreCase("U")){
            return "..-";
        }
        else if(letter.equalsIgnoreCase("V")){
            return "...-";
        }
        else if(letter.equalsIgnoreCase("W")){
            return ".--";
        }
        else if(letter.equalsIgnoreCase("X")){
            return "-..-";
        }
        else if(letter.equalsIgnoreCase("Y")){
            return "-.--";
        }
        else if(letter.equalsIgnoreCase("Z")){
            return "--..";
        }
        else if(letter.equalsIgnoreCase("_")){
            return "..--";
        }
        else if(letter.equalsIgnoreCase(",")){
            return ".-.-";
        }
        else if(letter.equalsIgnoreCase(".")){
            return "---.";
        }
        else if(letter.equalsIgnoreCase("?")){
            return "----";
        }
        return "";
    }
    public static void main(String args[]){
        ArrayList <String> al = new ArrayList<String>();
 
        Scanner sc = new Scanner(System.in);
        boolean run = true;
        FS f = new FS();
 
        String vstup;
//        String temp[];
        int [] arr;
        //--------
       // while(run=true){
 
//        vstup = sc.nextLine();
        String actLetter;
        String line="";
        while (sc.hasNextLine()){
            vstup = sc.nextLine();
            line="";
            actLetter = "";
            arr = new int[vstup.length()];
            for (int i=0;i<vstup.length();i++){
                actLetter = f.toMorse(vstup.charAt(i)+"");
                line += actLetter;            
                arr[i]=actLetter.length();
    //            al.add(s);
//                System.out.println(arr[i]+"="+actLetter);            
            }
//            System.out.println(vstup.substring(0, 5));
            String newWord ="";
            int actIndex=0;
            for(int j=(vstup.length()-1);j>=0;j--){
 
                actLetter = line.substring(actIndex,(actIndex+ arr[j]));
                newWord += f.toLetter(actLetter);
//                System.out.println(actLetter);
                actIndex = actIndex + arr[j];
            }
 
            System.out.println(newWord);
        }
 
    }
}