Given a String, check to see if the parenthesis contained in the String are balanced. Balanced parenthesis means for every open (parenthesis there is a corresponding closing) parenthesis and vice versa. Return the String "balanced" if they are balanced. And "unbalanced" if they are not balanced.

public String solution(String s) { //  your code goes here  return null; }

Example1: Given = "))"

Solution= "Unbalanced"

Example2: Given = ""

Solution= "Unbalanced"

Example3: Given = "()"

Solution= "balanced"