功能全面的二叉查找树与红黑树的性能比较算法，可以输出树的外形，并且支持用户自定义调整。-Full-featured binary search trees and red-black tree performance comparison algorithm can output the tree shape, and supports user-defined adjustments.

对于城市中几座建筑外形，给出这些建筑的二维轮廓-For several architectural features in the city, these buildings are given a two-dimensional contour