roster1变量为之前的全班花名册roster2变量为小明统计的全班花名册。你将被要求输出3行：第一行为roster1的长度；第二行为roster2的长度；第三行为两个花名册是否相同若相同输出相同；反之输出不相同若姓名顺序不同也算作不相同。java

String[] roster1 = {"张三","李四","王五","赵六"}; String[] roster2 = {"张三","李四","王五","赵六","小明"};

System.out.println(roster1.length); System.out.println(roster2.length);

if(Arrays.equals(roster1, roster2)){ System.out.println("相同"); }else{ System.out.println("不相同"); }