Does your code compile? O.o

Anyways, I think you might be overcomplicating things. This seems to do what you want:

my @stu = (
    '103_dsu 1 35 nbu103',
    '104_dsu 1 35 nbu104',
    '204_tape 1 1 ACS1',
    '101_dsu 1 35 nbu101',
);

my @dp = (
    'nbu103 Disk 6 -1',
     'nbu104 Disk 6 -1',
    'nbu101 Disk 6 -1',
);

foreach my $stu (@stu) {
    my (undef, undef, undef, $possible) = split ' ', $stu;
    my ($matched_dp) = grep {
        my ($dp) = split ' ', $_;
        $dp eq $possible
    } @dp;

    $stu = $matched_dp if $matched_dp;
}

use Data::Dumper;
print Dumper(@stu);

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In reply to Re: Search and Replace Elements from 1 array to another. by Riales
in thread Search and Replace Elements from 1 array to another. by skp

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