public void extractOperators(String input){
		String operatorRegex = "[+//*^-]";
//		String numInput = ("3 + 2 / 4.0 * 1 ^ 17.34");
		//[+//*^-]\
		//extracts all operators in math equation
		//extractOperators("3 + 2 / 4.0 * 1 ^ 17.34") = ["+", "/", "*", "^"]
		p = Pattern.compile(operatorRegex);
		m = p.matcher(input);
		
		ArrayList<String> al = new ArrayList<String>();

		while(m.find()){
			al.add(m.group());
		}
		System.out.println("Returned Operators");
		System.out.println(al.toString());
	}