height and level of binary tree code example

Example 1: height of a binary tree

int height(Node* root)
{
    // Base case: empty tree has height 0
    if (root == nullptr)
        return 0;
 
    // recur for left and right subtree and consider maximum depth
    return 1 + max(height(root->left), height(root->right));
}

Example 2: height of binary tree

# define a Class Tree, to intiate the binary tree
class TreeNode:
    def __init__(self, val):
        self.val = val
        self.left = None
        self.right = None
 
def height(root):
 
    # Check if the binary tree is empty
    if root is None:
        # If TRUE return 0
        return 0 
    # Recursively call height of each node
    leftAns = height(root.left)
    rightAns = height(root.right)
 
    # Return max(leftHeight, rightHeight) at each iteration
    return max(leftAns, rightAns) + 1
 
# Test the algorithm
root = TreeNode(1)
root.left = TreeNode(2)
root.right = TreeNode(3)
root.left.left = TreeNode(4)
 
print("Height of the binary tree is: " + str(height(root)))