动手动脑-随机数和重载

随机生成自己想要个数的数字

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package shangke.disanzhou;   import java.util.Random; import java.util.Scanner;   public class dongshoudongnao {       public static void main(String[] args) {         long   a,b,n;         Scanner shuru=new Scanner(System.in);         n=shuru.nextInt();         Random R = new Random();          a=R.nextInt();          b= Integer.MAX_VALUE;         for(int i=0;i<n;i++)         {             a=(a*16807)%b;             System.out.println(a);         }     } }

　　

可根据自己需要选择数量打印随机数

package shangke.disanzhou;

//MethodOverload.java
//Using overloaded methods

public class MethodOverload {

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

这个函数是对函数重载的一种利用方法，函数参数类型不同，参数个数不同，或者参数类型顺序不同都可以进行函数的重载