Question

java声明并创建float型数组，double型数组，使用键盘输入的方式给各

java声明并创建float型数组，double型数组，使用键盘输入的方式给各个元素赋值，输出数组元素。再用键盘输入两个数据，分别对数组进行全部填充和全部填充，输出填充后的结果

Answer 1

import java.util.Scanner;


public class Array {
    
    public static void main(String[] args) {
        
        float[] f=new float[5];
        double [] d=new double[5];
        
        System.out.println("给float数组赋值");
        Scanner sc=new Scanner(System.in);
        f[0]= new Float(sc.nextFloat());
        f[1]= new Float(sc.nextFloat());
        f[2]= new Float(sc.nextFloat());
        f[3]= new Float(sc.nextFloat());
        f[4]= new Float(sc.nextFloat());
        
        System.out.println("遍历float数组");
        
        for(float ff:f){
            System.out.print(ff+"+++++");
        }
        
        System.out.println();
        System.out.println("--------------------------------------------------------------------");
        System.out.println("给double数组赋值");
        Scanner sc1=new Scanner(System.in);
        d[0]=new Double(sc1.nextDouble());
        d[1]=new Double(sc1.nextDouble());
        d[2]=new Double(sc1.nextDouble());
        d[3]=new Double(sc1.nextDouble());
        d[4]=new Double(sc1.nextDouble());
        
        System.out.println("遍历double数组");
        
        for(double dd:d){
            System.out.print(dd+"+++++");
        }
        System.out.println();
        System.out.println("--------------------------------------------------------------------");
        System.out.println("填充float数组");
        Scanner sc2=new Scanner(System.in);
        f[0]= new Float(sc2.nextFloat());
        for(int i=1;i<f.length;i++){
            f[i]=f[0];
        }
        System.out.println("遍历float数组");
        for(float ff:f){
            System.out.print(ff+"+++++");
        }
        System.out.println();
        System.out.println("--------------------------------------------------------------------");
        System.out.println("填充double数组");
        Scanner sc3=new Scanner(System.in);
        d[0]=new Double(sc3.nextDouble());
        for(int i=1;i<d.length;i++){
            d[i]=d[0];
        }
        System.out.println("遍历doublet数组");
        for(double dd:d){
            System.out.print(dd+"+++++");
        }
    }

}