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 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 and Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

generateTrees

public List<TreeNode> generateTrees(int n)