[データ構造とアルゴリズム解析(Mark Allen Weiss)]非交差@Python

class DisjSet:
    def __init__(self, NumSets):
        self.S = [0 for i in range(NumSets+1)]

    def SetUnion(self, S, Root1, Root2):
        S[Root2] = Root1

    def Find(self, X, S):
        if S[X] <= 0:
            return X
        else:
            return self.Find(S[X], S)

DisjSet = DisjSet(8)
DisjSet.SetUnion(DisjSet.S, 5, 6)
DisjSet.SetUnion(DisjSet.S, 7, 8)
DisjSet.SetUnion(DisjSet.S, 5, 7)
print DisjSet.Find(8, DisjSet.S)
print DisjSet.Find(7, DisjSet.S)
print DisjSet.Find(4, DisjSet.S)
print DisjSet.S