[LeetCode] Unique Binary Search Trees II
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example,Given n = 3, your program should return ...
原文：[leetcode]Unique Binary Search Trees II @ Python
原題地址：https: oj.leetcode.com problems unique binary search trees ii 題意：接上一題，這題要求返回的是所有符合條件的二叉查找樹，而上一題要求的是符合條件的二叉查找樹的棵數，我們上一題提過，求個數一般思路是動態規划，而枚舉的話，我們就考慮dfs了。dfs start, end 函數返回以start，start ，...，end為根的二叉 ...
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