动手动脑(二)

1,编写一个方法,使用算法生成指定数目(如1000个)的随机整数

package pers.liqin.suiji.lq;
import java.util.Scanner;
public class SuiJi 
{
  public long a=3421L;
  public long c=1234L;
  public long m=1267L;
  public long x=1;
  public long zhengshu() 
  {
   x=(x*a+c)%m;
   return x;
  }
  public static void main(String[] args )
  {
     System.out.println("请输入生成的随机整数的个数:");
     Scanner s=new Scanner(System.in);
     int n=s.nextInt();
     SuiJi m=new SuiJi();
     long h;
     for(int i=0;i<n;i++)
     {
         h=m.zhengshu();
         System.out.println("x:"+h);
     }
   }
}

截图:

2,请看以下代码,你发现了有什么特殊之处吗?

public class MethodOverload {

    public static void main(String[] args) {
        System.out.println("The square of integer 7 is " + square(7));
        System.out.println("
The square of double 7.5 is " + square(7.5));
    }

    public static int square(int x) {
        return x * x;
    }

    public static double square(double y) {
        return y * y;
    }
}

运行结果:

运用了System.out.println()的重载

3,查看一下JDK中System.out.println()方法,你发现了什么?

原文地址:https://www.cnblogs.com/lq13035130506/p/9787272.html