if(FileName.getExt(f).equals("bed") && !f.getName().equals(out.getName()) ){
System.out.println(f);
GenomicRegionsBuilder gb= new BedReader(f).getGenomicRegionsBuilder();
mer.mergeNoSort(gb);
}
mer.sort();
}
GenomicRegionsBuilder gbout= mer.getMergedGenomicRegionsBuilder();
new BedExporter(gbout).writeToFile(out);