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  1. or download this
     

@numbers = ('25', '12', '32','56','45','21','65');
@needed = ('25','32','45','65');
  2. or download this
    e.g.    get 25 12 32   and   45 21 65
  3. or download this
    
 for (my $i=0; $i<@numbers; $i++)      {
...
}