# Binary Search Tree method question(s) C++!

**Question description**

These are not very difficult questions and i've already done most of the work I just want to know if my answers are correct or if you can fix them if they are not so please do not ask for more money..

I'm just trying to get a good grade here! Please help!

If anyone would be willing to help for free that would be greatly appreciated on my student budget! Hah :)

but if not it's okay I will still pay!

So first I had to write a method for the BinarySearchTree class named **sum** that takes no parameters. The method should return the total of
all the values in the tree and think recursively.

My answer:

int sum(node) if (node == NULL) { return 0; } else return node-->value + sum (node-->left) + sum (node-->right);

My next task was to

*w*rite a method for the BinarySearchTree class named

**height**that takes no parameters. The method should return the height of the tree and think recursively.

int BinarySearchTree::height (tree_node* count) { int l = 0; int r = 0; if (count == NULL) { return 0; } { l = height(count-->left); r = height(count-->right); if (l > r ||l == r) { return ( l +l ); } else { return ( r + l ); } }

And my last question was to write a method for the BinarySearchTree class named

**penultimate**that takes no parameters. The function should return the value of the second-largest item in the tree.

node* max = maximum(root); if(max --> left){ if (max-->parent-->date > max-->left-->date) cout << max-->parent-->data; else cout << max-->left-->data; } else cout << max-->parent-->data;

ANY SUGGESTIONS WOULD BE GREATLY APPRECIATED :)

THANKS!

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