rmuir commented on a change in pull request #357:
URL: https://github.com/apache/lucene/pull/357#discussion_r723259603
##########
File path: lucene/core/src/java/org/apache/lucene/util/ArrayUtil.java
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@@ -694,4 +694,81 @@ public static int compareUnsigned4(byte[] a, int aOffset,
byte[] b, int bOffset)
return Integer.compareUnsigned(
(int) BitUtil.VH_BE_INT.get(a, aOffset), (int)
BitUtil.VH_BE_INT.get(b, bOffset));
}
+
+ /**
+ * Return a comparator that computes the common prefix length across the
next {@code numBytes} of
+ * the provided arrays.
+ */
+ public static ByteArrayComparator getPrefixLengthComparator(int numBytes) {
Review comment:
Thanks! If we later need them for something outside of this package
(e.g. a points query), then we can look at putting them in a more generic place.
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