Class 7 - Trees

[filipecancio]

https://leetcode.com/problems/binary-tree-inorder-traversal
https://leetcode.com/problems/binary-tree-preorder-traversal/
https://leetcode.com/problems/binary-tree-postorder-traversal
https://www.geeksforgeeks.org/problems/inorder-successor-in-bst/1
https://leetcode.com/problems/delete-node-in-a-bst/description/
https://leetcode.com/problems/balance-a-binary-search-tree/description/
https://leetcode.com/problems/balance-a-binary-search-tree/description/

Trie

https://leetcode.com/problems/design-add-and-search-words-data-structure