My solution goes along the same lines, more or less:
my %dateformat = (
'99(.)99(.)99' => '"DD${1}MM${2}RR"',
'99(.)99(.)9999' => '"DD${1}MM${2}YYYY"',
'9999(.)99(.)99' => '"YYYY${1}MM${2}DD"',
);
DATE: while (<DATA>) { ## updated: it was 'foreach'
chomp;
foreach my $k (keys %dateformat) {
next unless /^$k$/;
my $trans = $_;
$trans =~ s/^$k$/$dateformat{$k}/ee;
print "translated <$_> to <$trans>\n";
next DATE;
}
warn "$_ unmatched\n";
}
__DATA__
99/99/9999
99/99/99
99-99-9999
9999999
9999@99#99
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