Givenn,howmanystructurallyuniqueBST's(binarysearchtrees)thatstorevalues1...n? Example: 分析: 参考答案解法https://leetcode.com/problems/unique-binary-search-trees/solution/ G(n)是n个数字的BST个数,注意数字 【LeetCode】95. Unique Binary Search Trees II(C++) ...
Since we already know the position of the second maximum element, we only need one query, i.e.object.query(smax_all, mid), to reduce the search space by half. Anytime the result of the query is equal to thesmax_all, then the max element must be located in the su...