AFOier @ 2017-01-16 21:14:56
rt
by AFOier @ 2017-01-16 21:18:26
还有根结点是不是编号永远为0
by Junlier_test @ 2018-07-17 12:01:46
树可以以任意节点为根
by Junlier_test @ 2018-07-17 12:02:02
@huangxuanao