数组的使用

 

 

package com.lin.array;

public class ArrayDemo4 {
    public static void main(String[] args) {
        int[] arrays={1,2,3,4,5};

        //jdk1.5,没有下标
//        for (int array : arrays) {
//            System.out.println(array);
//        }
//        printArray(arrays);
        int[] reverse = reverse(arrays);
        printArray(reverse);
    }
    //打印数组
    public static void printArray(int[] arrays){
        for (int i = 0; i < arrays.length; i++) {
            System.out.print(arrays[i]+" ");
        }
    }
    //反转数组
    public static int[] reverse(int[] arrays){
        int[] result=new int[arrays.length];
        //反转操作
        for (int i = 0,j=arrays.length-1; i < arrays.length ; i++,j--) {
            result[j]=arrays[i];
        }
        return result;
    }
}