Package g0001_0100.s0095_unique_binary_search_trees_ii

Class Solution

java.lang.Object
g0001_0100.s0095_unique_binary_search_trees_ii.Solution
public class Solution extends java.lang.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 Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.util.List<TreeNode>
    generateTrees(int n)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • generateTrees

      public java.util.List<TreeNode> generateTrees(int n)