  Summary: We present a new method to incrementally construct the FM-index for
both short and long sequence reads, up to the size of a genome. It is the first
algorithm that can build the index while implicitly sorting the sequences in
the reverse (complement) lexicographical order without a separate sorting step.
The implementation is among the fastest for indexing short reads and the only
one that practically works for reads of averaged kilobases in length.
  Availability and implementation: https://github.com/lh3/ropebwt2
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