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java计算后序表达式简介题目要求如下：用二叉树读取前缀表达式，打印该算式的后缀表达式，并求解代码实现TreeNode类：package com.zbl;
/**
* @Author {zbl}
* @Date: 2019/12/09/ 12:15
* @Description
*/
public class TreeNode<T> {
public T dat...