73:     #initialize a value to count where we are in the array in order to
74:     #delete the lines we do not need
75:     my $i = 0;
76:     my $item;
77:     my $item2;
78:     foreach $item (@data_file){
79:             foreach $item2 (@lines){
80:                     if ($item =~ /$item2/){
81:                             splice(@data_file,$i,1);
82:                     }
83:             }
84:             $i++
85:     }


##</code><code>##

    #initialize a value to count where we are in the array in order to
    #delete the lines we do not need
    foreach my $index ( reverse 0 .. $#data_file ) {
        foreach my $item ( @lines ) {
            if ( $data_file[ $index ] =~ /\Q$item/ ) {
                splice @data_file, $index, 1;
            }
        }
    }