96. Unique Binary Search Trees
Problem Statement
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:
Example 2:
Constraints:
1 <= n <= 19
Intuition
Links
https://leetcode.com/problems/unique-binary-search-trees/description/
Video Links
Approach 1:
C++
Approach 2:
C++
Approach 3:
C++
Approach 4:
C++
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