public void DemoTest()
{
IUnionFind uf = new QuickFind(10);
uf.Union(4, 3);
int[] ids = uf.GetIds();
Assert.AreEqual(3, ids[3]);
Assert.AreEqual(3, ids[4]);
uf.Union(3, 8);
ids = uf.GetIds();
Assert.AreEqual(8, ids[3]);
Assert.AreEqual(8, ids[4]);
uf.Union(6, 5);
ids = uf.GetIds();
Assert.AreEqual(5, ids[5]);
Assert.AreEqual(5, ids[6]);
uf.Union(9, 4);
ids = uf.GetIds();
Assert.AreEqual(8, ids[4]);
Assert.AreEqual(8, ids[9]);
uf.Union(2, 1);
ids = uf.GetIds();
Assert.AreEqual(1, ids[1]);
Assert.AreEqual(1, ids[2]);
Assert.IsTrue(uf.Connected(8, 9));
Assert.IsFalse(uf.Connected(5, 0));
uf.Union(5, 0);
ids = uf.GetIds();
Assert.AreEqual(0, ids[0]);
Assert.AreEqual(0, ids[5]);
Assert.AreEqual(0, ids[6]);
uf.Union(7, 2);
ids = uf.GetIds();
Assert.AreEqual(1, ids[1]);
Assert.AreEqual(1, ids[2]);
Assert.AreEqual(1, ids[7]);
uf.Union(6, 1);
ids = uf.GetIds();
Assert.AreEqual(1, ids[0]);
Assert.AreEqual(1, ids[1]);
Assert.AreEqual(1, ids[2]);
Assert.AreEqual(8, ids[3]);
Assert.AreEqual(8, ids[4]);
Assert.AreEqual(1, ids[5]);
Assert.AreEqual(1, ids[6]);
Assert.AreEqual(1, ids[7]);
Assert.AreEqual(8, ids[8]);
Assert.AreEqual(8, ids[9]);
}
public void InitWorks()
{
IUnionFind uf = new QuickFind(10);
int[] ids = uf.GetIds();
for (int i = 0; i < 10; i++)
{
Assert.AreEqual(i, ids[i]);
}
}