树结构整理大家可以抽象为父母跟孩子都走散了,现在为所有人登记找到自己的家人.
1.用父节点id,查找父节点是否已经存在。已经存在直接建立关联关系,不存在进入孤儿院,孤儿院记录其父节点id。 2.用自己身份编码,从孤儿院查找是否有孩子在等自己。
以hashmap整理树结构数据
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