dungba88 commented on code in PR #12710:
URL: https://github.com/apache/lucene/pull/12710#discussion_r1368616130
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lucene/core/src/java/org/apache/lucene/util/fst/IntSequenceOutputs.java:
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@@ -43,28 +44,29 @@ public IntsRef common(IntsRef output1, IntsRef output2) {
assert output1 != null;
assert output2 != null;
- int pos1 = output1.offset;
- int pos2 = output2.offset;
- int stopAt1 = pos1 + Math.min(output1.length, output2.length);
- while (pos1 < stopAt1) {
- if (output1.ints[pos1] != output2.ints[pos2]) {
- break;
- }
- pos1++;
- pos2++;
- }
+ int mismatchPos =
+ Arrays.mismatch(
+ output1.ints,
+ output1.offset,
+ output1.offset + output1.length,
+ output2.ints,
+ output2.offset,
+ output2.offset + output2.length);
- if (pos1 == output1.offset) {
+ if (mismatchPos == 0) {
// no common prefix
return NO_OUTPUT;
- } else if (pos1 == output1.offset + output1.length) {
+ } else if (mismatchPos == -1) {
Review Comment:
Either way would look good to me.
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