Complete reverse$()$ method that returns a new character array containing all contents in the input argument reversed.

Ex: If the input array is:

$[\text{'}$a$\text{'},\text{'}$b$\text{'},\text{'}$c$\text{'}]$

then the returned array will be:

$[\text{'}$c$\text{'},\text{'}$b$\text{'},\text{'}$a$\text{'}]$