import java.util.Scanner;
import scravaTurtleGraphics.*;
// This global variable holds the array
// representing the argument/operand stack of the RPN calculator
// All the methods read/write this variable


double[] arguments = {}; // initialize to avoid NullPointerException!

	void push(double v){
		double [] pushArray = copyArray(arguments, arguments.length+1);
	 	pushArray[pushArray.length-1] = v;
	 	arguments = pushArray;
	}// legger v på toppen av stacken

	double peek(double d){
	if(arguments.length == 0){
		return d;
	}
		return arguments[arguments.length-1];
	}// returnerer øverste verdi eller, -1 om stacken er tom

	double pop(double v){
		if(arguments.length == 0){
			return v;
		}
		double temp;
		temp = arguments[arguments.length-1];
		arguments = copyArray(arguments, arguments.length-1);
		return temp;
	}// fjerner verdien på toppen av stacken og returnerer den

double[] copyArray(double[] original, int newSize) {
	double[] newArray = new double[newSize];
	// copy the old elements into the same positions

	System.arraycopy(original, 0, newArray, 0, Math.min(original.length, newArray.length));
	// return new array
	return newArray;
}

// prints the arguments stack to Standard.out, with the provided
// prefix, separator and suffix
void print(String prefix, String separator, String suffix) {
	System.out.print(prefix);
	for (int i = 0; i < arguments.length; i++) {
		// make sure the separator is not printed before the first value
		if (i > 0) {
			System.out.print(separator);
		}
		System.out.print(arguments[i]);
	}
	System.out.print(suffix);
}



 void performOperation(char op){
 	if(op == '+'){
	 	double summer = pop(0)+ pop(0);
	 	push(summer);
 	}// summer to siste verdiene
 	if(op == '-'){
	 	double subtraher = pop(0)- pop(0);
	 	push(subtraher);
 	}// subtraherer siste verdi fra nest siste verdi
 	if(op == '/'){
	 	double divider = pop(1.0)/ pop(1.0);
	 	push(divider);
 	}//dividerer de to siste verdiene
 	if(op == '*'){
	 	double multipliser = pop(1.0)* pop(1.0);
	 	push(multipliser);
 	}//multipliserer de to siste verdiene
 	if(op == ','){
 	push(peek(0));
 	}//dupliserer siste verdi
 	if(op == '.'){
 		pop(0);
 	} //fjerner øverste verdi
 	if(op == '~'){
 		double swap = pop(0);
		double swap2 = pop(0);
		push(swap);
		push(swap2);
	}
	if(op == 'f'){
	 	STG.move(pop(0));
 	}
 	if(op == 't'){
	 	STG.turn(pop(0));
 	}
 	if(op == 'u'){
	 	STG.up();
 	}
 	if(op == 'd'){
	 	STG.down();
 	}
 	if(op == 'h'){
 		STG.home(true);
 	}
 	if(op == 'c'){
 		STG.setColor(pop(0), pop(0), pop(0), pop(0));
 	}
 	if(op == 'w'){
 		STG.setWidth((int)pop(0));
 	}

 }

Scanner sc = new Scanner(System.in);
System.out.println("Skriv inn noe:");
while(sc.hasNextLine()){
	String input = sc.nextLine();
	if(input.length() == 0){
		break;
	}splitAndHandleInput(input);
}

void handleInput(String input){

 	if(Character.isDigit(input.charAt(0))){
 		push(Double.valueOf(input));
 	}else{
 		performOperation(input.charAt(0));
 	}
}



 void splitAndHandleInput(String inn){
 	String[] inputA = inn.split(" ");
 	for(int i = 0; i<inputA.length; i++){
 		handleInput(inputA[i]);
 	}
}

print("(",",",")");