Package g0001_0100.s0096_unique_binary_search_trees

Class Solution

java.lang.Object

g0001_0100.s0096_unique_binary_search_trees.Solution

public class Solution
extends Object

96 - Unique Binary Search Trees.<p>Medium</p> <p>Given an integer <code>n</code>, return <em>the number of structurally unique **BST&rsquo;**s (binary search trees) which has exactly</em> <code>n</code> <em>nodes of unique values from</em> <code>1</code> <em>to</em> <code>n</code>.</p> <p><strong>Example 1:</strong></p> <p><img src="https://assets.leetcode.com/uploads/2021/01/18/uniquebstn3.jpg" alt="" /></p> <p><strong>Input:</strong> n = 3</p> <p><strong>Output:</strong> 5</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> n = 1</p> <p><strong>Output:</strong> 1</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= n <= 19</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	numTrees(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

numTrees

public int numTrees(int n)