我的红黑树的c++实现。主要特点是可以用dot工具把红黑树画出来，生成jpg文件。可以用生成的jpg文件清楚的看到红黑树插入删除的过程。-My red and black tree c++ Achieve. The main characteristics of dot tool can be used to red and black tree drawn to generate jpg files. Can be used to generate the jpg file to see cl