The class com.liferay.portal.kernel.util.ArrayUtil offers a wide range of array utility functions.
But in difference to the most of them, the reverse function is only available for String not for Object.
Example for an usecase:
When generating something like a breadcrumb in a theme, I would like to use:
(The getAncestestors() method returns the parents with the root as last object, but a breadcrumb usually prints the root as first object)
I know that I could use #breadcrumbs(), but that is not configurable enough (e.g. it doesn't support the google syntax).