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UnionFind in Swift
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class UnionFind { | |
var id:Int[]; | |
var count:Int; | |
init(N:Int) { | |
count = N; | |
id = []; | |
for(var i = 0; i < N; i++) { | |
id.append(i); | |
} | |
} | |
func find(p:Int) -> Int { | |
return id[p]; | |
} | |
func connected(p:Int, q:Int) -> Bool { | |
return find(p) == find(q); | |
} | |
func union(p:Int, q:Int) { | |
var pId = find(p); | |
var qId = find(q); | |
if(pId != qId) { | |
return; | |
} | |
for i in 0..id.count { | |
if(id[i] == pId) { | |
id[i] = qId; | |
} | |
count--; | |
} | |
} | |
} | |
var uf = UnionFind(N: 100); | |
uf.connected(10, q:11); | |
uf.union(10, q: 11); | |
uf.connected(10, q: 11); | |
uf.union(11, q: 53); | |
uf.connected(10, q: 53); | |
uf.union(10, q: 54); | |
uf.connected(53, q: 54); | |
uf.connected(11, q: 54); |
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