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Leetcode hot topic Hot 100, to be updated
2022-06-21 14:28:00 【Advanced mathematics volume II half price】
1. I didn't look at the binary tree
Binary tree - Simple -6
Simple recursive method ok
Be careful ,BFS in , One is continue
104. The maximum depth of a binary tree
Deque<TreeNode> deque = new LinkedList<>();
deque.add(root);
int size = deque.size(); // Note that this is not length
again
543. The diameter of a binary tree
again
again, Well understood. , Do it again
2. Binary tree - secondary ,9 Avenue
96. Different binary search trees
102. Sequence traversal of binary tree
105. Construction of binary trees from traversal sequences of preorder and middle order
114. The binary tree is expanded into a list
236. The nearest common ancestor of a binary tree
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https://leetcode-cn.com/problems/binary-tree-inorder-traversal/