public class Main {

	//global variables
	static int yoVol,heyVol;
	
	static final int targetVolume = 15;
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		yoVol = 0;
		heyVol = 0;
		
		welcome();
		
		game();
	}


	public static void welcome() {
		System.out.println("Welcome to Dr Hey and Dr Yo!");
	
	    for(int i = 0; i<5; i++)
	        System.out.print("Hey Yo!!\t");
	}
	
	public static void game() {
		
	    while(heyVol < targetVolume && yoVol < targetVolume) {
	
	    	scream();
	
	    }
	
	    //end of screaming, determine the winner
	    determineWinner();
	}
	
	public static void scream() {
		String word;
		
		//Dr Hey screams a word
		word = getScreamWord();
		updateVolume("Dr Hey", word);

		//Dr Yo screams a word
		word = getScreamWord();
		updateVolume("Dr Yo", word);
	}
	
	//it figures out whose volume to update
	public static void updateVolume(String player, String screamWord) {
		
	    System.out.println("\n"+player+" screamed "+screamWord+"!");
	    
	    if(player.equals("Dr Yo") && screamWord.equals("Yo!")) {
	        yoVol = yoVol+1; //update Dr Yo's volume
	    }
	    
	    if(player.equals("Dr Hey") && screamWord.equals("Hey!")) {
	        heyVol = heyVol+1; //update Dr Hey's volume
	
	    }
	}

	//this function returns either "Hey!" or "Yo!"
	public static String getScreamWord() {
		int rand = (int)(Math.random()*2);
		
		if(rand%2==0) {
	
	        return "Hey!";
	
		}else{
	
	        return "Yo!";
		}
	}



	

	public static void determineWinner() {
	
	    if(heyVol>yoVol){
	
	        System.out.println("Dr Hey is the winner. Volume: "+heyVol);
	
	    }else if(yoVol>heyVol) {
	
	    	System.out.println("Dr Yo is the winner. Volume: "+yoVol);
	
	    }else{
	
	    	System.out.println("It's a tie! Dr Hey Volume: "+heyVol+"; Dr Yo Volume: "+yoVol);
	
	    }
	}


	
	
	
}