for( int i=0; i<fs.length; i++ ){
File f= fs[i];
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();
new BedExporter(mer.getMergedGenomicRegionsBuilder()).writeToFile(out);
}