Java机试题目

public class Random(){
for(int i=1;i<10000;i ){
int Num=(int) (Math.random()*20 0.5);
int a=0;//统计0的个数
int b=0;//统计1的个数
......
if(Num==0){a }
if(Num==1){b }
......
}
int [] Numarray={a,b,....}//用数组把刚才生成的东西存起来
//下面我们用冒泡排序把他们由多到少排序
for(int i=1;ifor(int j=1;jif(Numarray[j-1]int t=Numarray[j-1];
Numarray[j-1]=Numarray[j];
Numarray[j]=t;
}
}
}
for(int i=0;iSystem.out.print(a[i] "");
}
================完成=====================

JAVA上机测试题

第一题 ：
import java.util.ArrayList;
import java.util.List;

class Vehicle {
public void run(){
System.out.println("这是交通工具run方法");
}
}
class Motor extends Vehicle{
public void run(){
System.out.println("这是Motorrun方法");
}
}
class Ship extends Vehicle{
public void run(){
System.out.println("这是Shiprun方法");
}
}
class Aeroplane extends Vehicle{
public void run(){
System.out.println("这是Aeroplanerun方法");
}
}
class Car extends Motor{
public void run(){
System.out.println("这是Carrun方法");
}
}
class Bus extends Motor{
public void run(){
System.out.println("这是Busrun方法");
}
}
public class Test{
public static void main(String[] args) {

List list=new ArrayList();
Vehicle v1=new Vehicle();
Vehicle v2=new Motor();
Vehicle v3=new Ship();
Vehicle v4=new Aeroplane();
Vehicle v5=new Car();
Vehicle v6=new Bus();
list.add(v1);
list.add(v2);
list.add(v3);
list.add(v4);
list.add(v5);
list.add(v6);
for (Vehicle vehicle : list) {
vehicle.run();
}
}
}