已知检索树的后序序列是12,21,19,67,45,23,那么,它的先序序列是选项: A:23,19,21,67,45; B:21,12,19,23,45,67; C:23,45,12,67,19,21; D:23,19,12,21,45,67 后序 已知 序列 发布时间:2024-05-09 23:37:33