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|
#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say postderef signatures state };
use Carp;
use List::Compare;
my @examples = (
{ s => "Perl", t => "Preel" },
{ s => "Weekly", t => "Weeakly" },
{ s => "Box", t => "Boxy" },
);
for my $example (@examples) {
my $output = odd_character($example);
my $s = $example->{s};
my $t = $example->{t};
say <<~"END";
Input: \$s = "$s" \$t = "$t"
Output: $output
END
}
sub odd_character ($input) {
my @s = sort split //, $input->{s};
my @t = sort split //, $input->{t};
say join ', ', @s;
say join ', ', @t;
return 7;
my @output;
while ( @s && @t ) {
if ( $s[0] eq $t[0] ) {
shift @s;
shift @t;
}
else {
if ( scalar @s > scalar @t ) {
push @output, shift @s;
}
elsif ( scalar @s < scalar @t ) {
push @output, shift @t;
}
else { croak 'Impossible Scenario' }
}
}
push @output, @s if @s;
push @output, @t if @t;
return shift @output;
}
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