Not the most efficient method, but anyway,
assuming that both your files contain one word per line,
the mistake is here:
WORD:
foreach $word (@data)
{
STOP:
foreach $stop (@stopwords)
{
next WORD if $word eq $stop; # <---
}
push(@lessWords, $word);
}
Whenever a stopword matches, you should
exite the outer loop.
Consider using a hash instead.
my %stops = map {$_,undef} @stopwords;
for my $word (@data)
{
next if exists $stops{$word};
push(@lessWords, $word);
}
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