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#!/usr/bin/perl
# Perl Weekly Challenge - 090
# - https://perlweeklychallenge.org/blog/perl-weekly-challenge-090/
#
# Task 1 - DNA Sequence
#
# Author: Niels 'PerlBoy' van Dijke
use strict;
use warnings;
# Unbuffered STDOUT
$|++;
my %dnaMapping = (qw(T A A T G C C G));
@ARGV = (qw(GTAAACCCCTTTTCATTTAGACAGATCGACTCCTTATCCATTCTCAGAGATGTGTTGCTGGTCGCCG))
unless (@ARGV);
my ($D) = @ARGV;
die "Not a valid DNA sequence"
if ($D =~ m#[^ATCG]#);
printf "Input: %s\n", $D;
$D =~ s#(.)#$dnaMapping{$1}#g;
printf "Output: %s\n", $D;
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