GitHub - lemire/externalsortinginjava: External-Memory Sorting in Javaimport com.google.code.externalsorting.CsvExternalSort; import com.google.code.externalsorting.CsvSortOptions; // provide a comparator Comparator<CSVRecord> comparator = (op1, op2) -> op1.get(0).compareTo(op2.get(0)); //... inputfile: input file name //... outputfile: output file name //...provide sort options CsvSortOptions sortOptions = new CsvSortOptions .Builder(comparator, CsvExternalSort.DEF
