(7-13)请阅读程序,写出程序运行结果。 // 运行结果题 public class Demo4 { public static int print(Object obj ) { int [] arr ; int sum =1; if ( obj instanceof int []) { arr =( int []) obj ; for ( int x : arr ) { sum = arr . length + sum ; } } return sum ; } public static void main(String[] args ) { int [] arr = {1,2,3,4,5}; String [] list = { " 孙悟空 " , " 猪八戒 " , " 唐僧 " }; System. out .println( print ( arr )+ print ( list )); } }