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## [95. Unique Binary Search Trees II](https://leetcode.com/problems/unique-binary-search-trees-ii/)
给定一个整数 `n`,生成所有由 `1 ... n` 为节点所组成的 __二叉搜索树__ 。
#### Example
```text
Input: 3
Output:
[
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![image](https://user-images.githubusercontent.com/32625059/66122822-48b37b80-e613-11e9-96dd-fc2898dc0233.png)
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* [문제링크](https://leetcode.com/problems/merge-two-binary-trees/)
* 나의 풀이
- Traverse와 관련된 문제인 듯
- 우선 Preorder / Recursive 방식으로 품 -> O(n)
- Iterative하게 풀어볼 것
- [참고링크](https://www.geeksforg…
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Contribution Guidelines for this question-
-Languages available: C++, Java, Python
-Well Commented Code
-In the starting, add a brief explanation of the algorithm
-if possible, add time and spac…
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# Contribution Guidelines for this question-
- Languages available: C++, Java, Python
- Well Commented Code
- In the starting, add a brief explanation of the algorithm
- if possible, add time an…
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### Do the checklist before filing the issue:
- [x] Do you have Node.js and all the relevant dev-dependencies installed?
- [ ] Is this a **bug fix**?
- [x] Is this an **enhancement**?
- [x] Is t…
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One task frequently appears in the binary tree: search neighbors of non-existent key. The following code implements such algorithm for the BinarySearchTree:
(file extend_binary_tree.js)
``` javascri…
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## Link of the question
https://leetcode.com/problems/unique-binary-search-trees-ii/
## Coding platform
- [ ] Hackerrank
- [ ] HackerEarth
- [ ] Codechef
- [ ] Codeforces
- [x] Leetcode
- …
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Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.
For example,
Given n = 3, your program should return all 5 unique BST's shown below.
```
1 3…