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#!/usr/bin/env raku
#
# Task 2 from
# https://perlweeklychallenge.org/blog/perl-weekly-challenge-080/
use Test;
is candies([1, 2, 2]), 5;
is candies([1, 4, 3, 2]), 7;
# candies [1, 2, 2];
# candies [1, 4, 2, 1, 5];
# candies [1, 2, 2, 1, 3];
# candies [1, 4, 2, 1, 5, 2, 3, 1, 1, 3, 2];
sub candies(@n) {
my @candies = 1 xx @n.elems;
my $s;
repeat {
$s = @candies.sum;
@candies[0]++ if @n[0] > @n[1] && @candies[0] <= @candies[1];
for 1 ..^ @n.end -> $i {
@candies[$i]++ if @n[$i] > @n[$i - 1] && @candies[$i] <= @candies[$i - 1];
@candies[$i]++ if @n[$i] > @n[$i + 1] && @candies[$i] <= @candies[$i + 1];
}
@candies[*-1]++ if (@n[*-1] > @n[*-2] && @candies[*-1] <= @candies[*-2]) || (@n[*-1] == @n[*-2] && @candies[*-1] < @candies[*-2]);
say @candies;
} until $s == @candies.sum;
return $s;
}
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