Taken from Perl Cookbook 4.7:
#!/apps/bin/perl -w
use strict;
# Taken from Perl Cookbook 4.7 Finding Elements in One Array but
# not another
my %seen = (); # look up table
my @goodWords; # words you want
my @badWords=("jerk","store","king");
my @myArray=("jerry","wash","king","kong","store","when","jerk");
@seen{@badWords} = (); # build lookup table
my $item;
foreach $item (@myArray) {
push (@goodWords, $item) unless exists $seen{$item};
}
# print the contents of goodWords
foreach (@goodWords) {
print "$_\t";
}
print "\n";