Tokenize a string

Separate the string "Hello,How,Are,You,Today" by commas into an array so that each index of the array stores a different word. Display the words to the 'user', in the simplest manner possible, separated by a period. To simplify, you may display a trailing period.

Tokenize a string
You are encouraged to solve this task according to the task description, using any language you may know.

Perl

Interpreter: Perl any 5.X

# in split, between the // goes a regex
my @words = split(/,/, "Hello,How,Are,You,Today");
print join('.', @words); # does not include a trailing period

Alternate

my @words = split(/,/, "Hello,How,Are,You,Today");
print $_.'.' for (@words); # includes a trailing period

Or my personal favorite, the one liner

print join('.', split(/,/, "Hello,How,Are,You,Today"));

Ruby

    string = "Hello,How,Are,You,Today".split(',')
    string.each do |w|
         print "#{w}."
    end