Java实现的采用分治算法的城市轮廓线线程序，《算法引论》73页的相应实现源码 -Java implementation of the city skyline divide and conquer algorithm line program, the corresponding implementation source code of algorithm Introduction 73

城市轮廓线算法。采用分治发算法，输入入为第一*子个数，而后（左，高，右）。 -City skyline algorithm. Hair algorithms using divide and conquer, enter into the first line of the house number, then (left, right).