java动态数组反向输出

Question

    int[] a = new int[7];
    int i,temp;
    Scanner sc =  new Scanner(System.in);
    System.out.println("请输入七个数");
    for(i=0;i<a.length;i++)
    {
        a[i]=sc.nextInt();
        System.out.println("交换前:");
        for(i=0;i<a.length;i++)
            System.out.println(a[i]+"\t");
        System.out.println();
        for(i=0;i<a.length;i++)
        {
            temp=a[i];
            a[i]=a[a.length-i-1];
            a[a.length-i-1]=temp;
        }
        System.out.println("交换后:");
        for(int x:a)
            System.out.println(x+"\t");
        System.out.println();
    }

Answer 1

参考一下

import java.util.Scanner;

public class ReverseNumbersExample {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int[] numbers = new int[7];

        System.out.println("Please enter 7 numbers:");

        // Read 7 numbers from the console
        for (int i = 0; i < 7; i++) {
            numbers[i] = scanner.nextInt();
        }

        // Print the numbers in reverse order
        System.out.println("Numbers in reverse order:");
        for (int i = 6; i >= 0; i--) {
            System.out.println(numbers[i]);
        }
    }
}