算法分析经典的数塔问题，从顶部出发，在每一结点可以选择向左走或是向右走，一起走到底层，要求找出一条路径，使路径上的值最大。 -Algorithm analyzes a number of classic tower problem, starting from the top, at each node can choose to go left or right, go, walk out together to the ground floor, asked to find a pat