diff options
Diffstat (limited to 'datastructures/unionFind2.cpp')
| -rw-r--r-- | datastructures/unionFind2.cpp | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/datastructures/unionFind2.cpp b/datastructures/unionFind2.cpp deleted file mode 100644 index d1b9162..0000000 --- a/datastructures/unionFind2.cpp +++ /dev/null @@ -1,26 +0,0 @@ -// unions[i] >= 0 => unions[i] = parent -// unions[i] < 0 => unions[i] = -size -vector<int> unions; - -init(int n) { - unions.assign(n, -1); -} - -int findSet(int i) { - if (unions[i] < 0) return i; - return unions[i] = findSet(unions[i]); -} - -void linkSets(int a, int b) { // Union by size. - if (unions[b] > unions[a]) swap(a, b); - unions[b] += unions[a]; - unions[a] = b; -} - -void unionSets(int a, int b) { - if (findSet(a) != findSet(b)) linkSets(findSet(a),findSet(b)); -} - -void getSize(int i) { - return -unions[findSet(i)]; -} |
