17 lines
244 B
Perl
17 lines
244 B
Perl
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use 5.38.0;
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package Part1;
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use List::AllUtils qw/ sum /;
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sub extract_number ($line) {
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my @n = $line =~ /(\d)/g;
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return join "", $n[0], $n[-1];
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}
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sub solution_1 ($input) {
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sum map { extract_number($_) } split "\n", $input;
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}
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1;
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