数组使用

1.普通的For循环

2.For-Each循环

3.数组作方法人参

4.数组作返回值

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);
    }
//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=result.length-1; i < arrays.length;i++,j--) {
            result[j] = arrays[i];
        }

        return result;
    }
//打印数组元素
    public static void printArray(int[] arrays){
        for (int i = 0; i < arrays.length; i++) {
            System.out.print(arrays[i]+" ");

        }