陣列反轉
===

private List<String> arr = {
 "A", "B", "C", "D"
};

Collections.reverse(arr);
System.out.println(arr);

## Ref.
[java.util.Collections.reverse()方法實例](http://tw.gitbook.net/java/util/collections_reverse.html)

###### tags: `語法相關`