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make find iterative

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This commit is contained in:
birds3345 2024-07-17 13:46:00 -04:00
parent 9f07cd5e71
commit aef6dd715b
1 changed files with 8 additions and 3 deletions
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11
EqSat/src/UnionFind.cpp
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@ -30,13 +30,18 @@ Id UnionFind::find(Id id)
{
LUAU_ASSERT(size_t(id) < parents.size());
Id set = const_cast<const UnionFind*>(this)->find(id);
// An e-class id 𝑎 is canonical iff find(𝑎) = 𝑎.
if (id != parents[size_t(id)])
while (id != parents[size_t(id)])
{
// Note: we don't update the ranks here since a rank
// represents the upper bound on the maximum depth of a tree
parents[size_t(id)] = find(parents[size_t(id)]);
parents[size_t(id)] = set;
id = parents[size_t(id)];
}
return parents[size_t(id)];
return set;
}
void UnionFind::merge(Id a, Id b)