二叉树建立还有后序计算表达式

[{"title":"（ 16 个子文件 149KB ） 二叉树建立还有后序计算表达式","children":[{"title":"二叉树","children":[{"title":"main.cpp <span style='color:#111;'> 575B </span>","children":null,"spread":false},{"title":"二叉树.dsp <span style='color:#111;'> 4.24KB </span>","children":null,"spread":false},{"title":"二叉树.dsw <span style='color:#111;'> 537B </span>","children":null,"spread":false},{"title":"二叉树.ncb <span style='color:#111;'> 49.00KB </span>","children":null,"spread":false},{"title":"二叉树.opt <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"二叉树.exe <span style='color:#111;'> 520.10KB </span>","children":null,"spread":false},{"title":"Btree.h <span style='color:#111;'> 3.09KB </span>","children":null,"spread":false},{"title":"二叉树.plg <span style='color:#111;'> 1.29KB </span>","children":null,"spread":false}],"spread":true},{"title":"calculate","children":[{"title":"main.cpp <span style='color:#111;'> 2.25KB </span>","children":null,"spread":false},{"title":"calculate.ncb <span style='color:#111;'> 33.00KB </span>","children":null,"spread":false},{"title":"calculate.exe <span style='color:#111;'> 216.11KB </span>","children":null,"spread":false},{"title":"calculate.plg <span style='color:#111;'> 1.31KB </span>","children":null,"spread":false},{"title":"calculate.dsp <span style='color:#111;'> 4.27KB </span>","children":null,"spread":false},{"title":"calculate.opt <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"calculate.dsw <span style='color:#111;'> 543B </span>","children":null,"spread":false},{"title":"Btree.h <span style='color:#111;'> 5.17KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]