數據結構

二叉樹：
https://blog.csdn.net/qq_40772692/article/details/79343914![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20190109163323317.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1FXRE1jaGVuZ3pp,size_16,color_FFFFFF,t_70)


https://blog.csdn.net/soundwave_/article/details/53120766