Unique Binary Search Trees : Catalan Numbers

Count no of BST's that can be formed using N nodes numbered from 1,2,3,....n. Example: Input: 3 Output: 5 Explanation: Given n = 3, there are a total of 5 unique BST's: 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 … Continue reading Unique Binary Search Trees : Catalan Numbers