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e3b47be @jtpalmer Problem 8, Perl 5.
authored
1 #!/usr/bin/env perl
2 use strict;
3 use warnings;
4 use 5.010;
5 use List::Util qw(reduce max);
6
41e8251 @jtpalmer Perltidy.
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7 my $n = join( '', map { my $x = $_; chomp $x; $x } <DATA> );
e3b47be @jtpalmer Problem 8, Perl 5.
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8
9 my $max = 0;
41e8251 @jtpalmer Perltidy.
authored
10 for my $x ( 0 .. length($n) - 5 ) {
11 my @digits = split( //, substr( $n, $x, 5 ) );
e3b47be @jtpalmer Problem 8, Perl 5.
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12 my $product = reduce { $a * $b } @digits;
41e8251 @jtpalmer Perltidy.
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13 $max = max( $max, $product );
e3b47be @jtpalmer Problem 8, Perl 5.
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14 }
15 say $max;
16
17 __DATA__
18 73167176531330624919225119674426574742355349194934
19 96983520312774506326239578318016984801869478851843
20 85861560789112949495459501737958331952853208805511
21 12540698747158523863050715693290963295227443043557
22 66896648950445244523161731856403098711121722383113
23 62229893423380308135336276614282806444486645238749
24 30358907296290491560440772390713810515859307960866
25 70172427121883998797908792274921901699720888093776
26 65727333001053367881220235421809751254540594752243
27 52584907711670556013604839586446706324415722155397
28 53697817977846174064955149290862569321978468622482
29 83972241375657056057490261407972968652414535100474
30 82166370484403199890008895243450658541227588666881
31 16427171479924442928230863465674813919123162824586
32 17866458359124566529476545682848912883142607690042
33 24219022671055626321111109370544217506941658960408
34 07198403850962455444362981230987879927244284909188
35 84580156166097919133875499200524063689912560717606
36 05886116467109405077541002256983155200055935729725
37 71636269561882670428252483600823257530420752963450
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