perl function reverse

The reverse function in Perl takes a list or a string as input and returns the elements in the reverse order.

Here's an example of using reverse on a list of strings:

my @fruits = ('apple', 'banana', 'cherry', 'date');
my @reversed_fruits = reverse @fruits;
print "@reversed_fruits\n"; # prints 'date cherry banana apple'

In this example, the reverse function is applied to an array @fruits, which contains four strings. The function returns a new array with the elements in the reverse order, which is stored in @reversed_fruits. The print statement then outputs the reversed array.

Here's an example of using reverse on a string:

my $string = "Hello, world!";
my $reversed_string = reverse $string;
print "$reversed_string\n"; # prints '!dlrow ,olleH'

In this example, the reverse function is applied to a string $string, which contains the text "Hello, world!". The function returns a new string with the characters in the reverse order, which is stored in $reversed_string. The print statement then outputs the reversed string.