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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit cb5bb5e222
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Task/Caesar-cipher/Perl/caesar-cipher.pl Normal file
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sub caesar {
my ($message, $key, $decode) = @_;
$key = 26 - $key if $decode;
$message =~ s/([A-Z])/chr(((ord(uc $1) - 65 + $key) % 26) + 65)/geir;
}
my $msg = 'THE FIVE BOXING WIZARDS JUMP QUICKLY';
my $enc = caesar($msg, 10);
my $dec = caesar($enc, 10, 'decode');
print "msg: $msg\nenc: $enc\ndec: $dec\n";