import java.util.Scanner;

public class PigLatin {

	public static void main(String[] args) {
		String phrase;
		
		Scanner input = new Scanner(System.in);
		
		System.out.print("Enter a phrase: ");
		phrase = input.nextLine();

		System.out.println();
		System.out.println(phrase);
		System.out.println("in pig latin is");
		convertToPigLatin(phrase);
	}
	
	//-------------------------------------------------------
	// Convert an entire phrase to pig latin and print it out. 
	// Precondition: This method assumes phrase ends with '.'.  
	public static void convertToPigLatin(String phrase) {
		Scanner inPhrase = new Scanner(phrase);

		while (inPhrase.hasNext()) {
			String word = inPhrase.next();
			if (word.charAt(word.length()-1) == '.') {
				System.out.print(pigLatinWord(word.substring(0,word.length()-1)) + ".");
			} else {
				System.out.print(pigLatinWord(word) + " ");
			}
		}
	}
	
	//--------------------------------------------------------
	// Convert one word to pig latin.
	// Precondition: s is not an empty string
	// Postcondition: returns a new string that is the pig latin
	// form of s
	public static String pigLatinWord(String s) {
		String pigWord;
	    if (isVowel(s.charAt(0))) {
			pigWord = s + "-way";
	    } else if (s.startsWith("th") || s.startsWith("Th")) {		// or (s.toUpperCase().startsWith("TH"))
	    	pigWord = s.substring(2) + "-" + s.substring(0,2) + "ay";
	    } else {
	    	pigWord = s.substring(1,s.length()) + "-" + s.charAt(0) + "ay";
	    }
	    return pigWord;
	}

	//---------------------------------------------
	// Determines whether c is a vowel character
	// Precondition: c contains a letter
	// Postcondition: returns true when c is a vowel
	public static boolean isVowel(char c) {
		String vowels = "aeiouAEIOU";
		return (vowels.indexOf(c) >= 0); 	// when index of c is not -1, c is a vowel
	}
}