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 java.lang.Object
96 - Unique Binary Search Trees.

Medium

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

Example 1:

Input: n = 3

Output: 5

Example 2:

Input: n = 1

Output: 1

Constraints:

  • 1 <= n <= 19

  • 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)