Write a function to find the depth of a binary tree.

Answer Posted / sai

int maxDepth(TreeNode *tree)
{
if (tree == NULL)
return 0;
else {
// compute the depth of each subtree
int lDepth = maxDepth(tree->left);
int rDepth = maxDepth(tree->right);

// use the larger one
if(lDepth > rDepth)
return (lDepth + 1);
else
return (rDepth + 1);
}
}

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