of possible binary trees which are balanced. This number can be huge, so, return output modulus 10^9 + 7. Write a simple recursive solution. Input Format : The first and only line of input contains an integer, that denotes the value of h. Here, h is the height of the tree. Output Format : The first and only line of output contains the count of balanced binary trees modulus 10^9 + 7. Constraints :

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Code: Number of Balanced BTs
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Given an integer h, find the possible number of balanced binary trees of height h. You just need to return the count of possible binary trees which are balanced.
This number can be huge, so, return output modulus 10^9 + 7.
Write a simple recursive solution.
Input Format :
The first and only line of input contains an integer, that denotes the value of h. Here, h is the height of the tree.
Output Format :
The first and only line of output contains the count of balanced binary trees modulus 10^9 + 7.
Constraints :
1 <= h <= 24
Time Limit: 1 sec
Sample Input 1:
3
Sample Output 1:
15
Sample Input 2:
4
Sample Output 2:
315
Solution:===========================================================================
public class Solution {.

 

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