java.lang.Object
g0001_0100.s0095_unique_binary_search_trees_ii.Solution

public class Solution extends Object
95 - Unique Binary Search Trees II.

Medium

Given an integer n, return all the structurally unique **BST’**s (binary search trees), which has exactly n nodes of unique values from 1 to n. Return the answer in any order.

Example 1:

Input: n = 3

Output: [[1,null,2,null,3],[1,null,3,2],[2,1,3],[3,1,null,null,2],[3,2,null,1]]

Example 2:

Input: n = 1

Output: 1

Constraints:

  • 1 <= n <= 8
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • generateTrees

      public List<TreeNode> generateTrees(int n)