04-数组使用
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普通的for循环
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For-Each 循环
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数组作方法入参
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1 package xiaoka.array;
2
3 public class ArrayDemo04 {
4 public static void main(String[] args) {
5 int[] arrays ={1,2,3,4,5};
6
7 //jdk 1.5 没有下标
8 // for (int array : arrays) {
9 // System.out.println(array);
10 // }
11
12 //printArray(arrays);
13
14 int[] reverse = reverse(arrays);
15 printArray(reverse);
16
17 }
18
19 //反转数组
20 public static int[] reverse(int[] arrays){
21 int[] result = new int[arrays.length];
22
23 //反转的操作
24 for (int i = 0,j = result.length-1; i < arrays.length; i++,j--) {
25 result[j] = arrays[i];
26 }
27 return result;
28 }
29
30
31
32 //打印数组元素
33 public static void printArray(int[] arrays){
34 for (int i = 0; i < arrays.length; i++) {
35 System.out.println(arrays[i]+ " ");
36 }
37 }
38 }
39
40
