JAVA 8

public static String isBalanced(String s) { String response = "YES"; String[] values = s.split(""); String listExpected = ""; String passValues = "({[";

for(int i = 0; i < values.length; i ++){
    String value = values[i];

    if(!passValues.contains(value)){
        String[] list = listExpected.split("");
        if(list[0].equals(value)){
            listExpected = listExpected.replaceFirst("\\"+value, "");
        } else {
            response = "NO";
            break;
        }
    }

    if(value.equals("(")){
        listExpected = ")" + listExpected;
    }

    if(value.equals("{")){
        listExpected = "}" + listExpected;
    }

    if(value.equals("[")){
        listExpected = "]" + listExpected;
    }
}

return response;
}