A: (x_train, x_test), (y_train, y_test)
B: [x_train, x_test], [y_train, y_test]
C: [x_train, y_train], [x_test, y_test]
D: (x_train, y_train), (x_test, y_test)
举一反三
- 以下是"public static void test(int x, int y)"的方法重载( ) A: public static void Test(int x) B: public static int test(int x, int y) C: public static void test(int y, int x) D: public static void test(int x, int y)
- (6-6)请阅读程序,写出程序运行结果。 class Test{ static int x=10; int y=99; { y=y+10; } static { x=x+5; } { y=y+10; } static { x=x+5; } public Test() {//构造方法 x=x+5; } { System.out.println(x*y); } } public class Demo11 { public static void main(String[] args) { Test t1=new Test(); Test t2=new Test(); } }
- 已有如下程序: public class Test{ public Test(int x,int y,int z){.....} } 下面哪些方法是合法的构造方法重载:( ) A: Test(){} B: int Test(){} C: Test(int x,int y,byte z){} D: void Test(int x,int y,int z){}
- 下列代码的运行结果是______ <script> var x = 1; function test() { var x = 2; y = 3; document.write(x); } test(); document.write(x); document.write(y); </script>
- 以下程序的输出结果是:( )fo = open("text.txt",'w+')x,y ='this is a test','hello'fo.write('{}+{}\n'.format(x,y))print(fo.read())fo.close() A: this is a test hello B: this is a test C: this is a test,hello. D: this is a test+hello
内容
- 0
如下代码定义了一个类Test: class Test { private int y; Test (int x) { y:x; } }现在为Test 类生成一个对象,正确的语句是( )。 A: Test t = new Test( ); B: Test t=new Test(10, 20); C: Test t; D: Test t=new Test(10);
- 1
(06-03)在Java中,以下程序编译运行后的输出结果为( )。 public class Test { int x, y; Test(int x, int y) { this.x = x; this.y = y; } public static void main(String[] args) { Test pt1, pt2; pt1 = new Test(3, 3); pt2 = new Test(4, 4); System.out.print(pt1.x + pt2.x); } }
- 2
下面程序代码的输出结果是( )。x= 10y=x="test"y A: 10 B: test C: .F. D: 运行出错
- 3
using System; class Test { public static void Main() { int x = 5; int y = x++; Console.WriteLine(y); y=++x; Console.WriteLine(y); } }
- 4
有如下程序:#includeusing namespace std;Class Testpublic:Test()Test(const Test&t)cout<<1;);Test fun(Test &u)Test t=u;retum t;int main()Test X,y;x=fun(y);retum 0;运行这个程序的输出结果是()。 A: 无输出 B: 1 C: 11 D: 111