- Prepare
- Tutorials
- 30 Days of Code
- Day 22: Binary Search Trees

# Day 22: Binary Search Trees

# Day 22: Binary Search Trees

- Prepare
- Tutorials
- 30 Days of Code
- Day 22: Binary Search Trees

**Objective**

Today, we're working with Binary Search Trees (BSTs). Check out the Tutorial tab for learning materials and an instructional video!

**Task**

The height of a binary search tree is the number of edges between the tree's root and its furthest leaf. You are given a pointer, , pointing to the root of a binary search tree. Complete the *getHeight* function provided in your editor so that it returns the height of the binary search tree.

**Input Format**

The locked stub code in your editor reads the following inputs and assembles them into a binary search tree:

The first line contains an integer, , denoting the number of nodes in the tree.

Each of the subsequent lines contains an integer, , denoting the value of an element that must be added to the BST.

**Output Format**

The locked stub code in your editor will print the integer returned by your *getHeight* function denoting the height of the BST.

**Sample Input**

```
7
3
5
2
1
4
6
7
```

**Sample Output**

```
3
```

**Explanation**

The input forms the following BST:

The longest root-to-leaf path is shown below:

There are nodes in this path that are connected by edges, meaning our BST's . Thus, we print as our answer.