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berezovskyi/gist:2c4d2a07fa2f35e5e04c

Created September 4, 2014 12:59
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convert a uuid to biginteger
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gistfile1.java
private BigInteger getBigIntegerFromUuid(UUID randomUUID) {
ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
bb.putLong(randomUUID.getMostSignificantBits());
bb.putLong(randomUUID.getLeastSignificantBits());
return new BigInteger(bb.array());
}
@drmalex07
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Another approach using unsigned longs can be found here:
https://gist.github.com/drmalex07/9008c611ffde6cb2ef3a2db8668bc251

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