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在Amazon和Meta的面试中Union Find并查集时候考到的，除了卡马网的三道题建议增加一些leetcode上的板子题作为训练。
以下是我做了很多之后整理出来比较好的题
```
261 - Graph Valid Tree
This problem asks you to determine if a given undirected graph is a valid …
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Trying to pass `-posix-runtime -search=bfs -max-depth=10` as options results in:
```
Error running /home/klee/klee_build/bin/klee -posix-runtime -search=bfs -max-depth=10 /tmp/code/code.o:
klee: …
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## **`Breadth-First Search (BFS)`** -
**No existing data will change since it is a addition of new algorithm/technique** -
### Type of Issue -
Please add/delete options that are not relevant…
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Write an implementation of breadth first search algorithm on an integer array with proper explanation through comments.
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### Is there an existing issue for this?
- [X] I have searched the existing issues
### Feature Description
I want to add graph algorithms like BFS, DFS, Prim's, Kruskal's, Dijkstra's, etc. to this …
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- [x] [3. Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/)
- [x] [128. Longest Consecutive Sequence](https://leetcode.com…
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### LeetCode Username
FoxtrotOnce
### Problem Number, Title, and Link
https://leetcode.com/problems/cut-off-trees-for-golf-event/description/
### Bug Category
Problem constraints
### Bug Descrip…
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> Breadth First Search is one of the most simple graph algorithms. It traverses the graph by first checking the current node and then expanding it by adding its successors to the next level. The proce…
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### BFS(Breadth First Search; 너비우선탐색)
- 루트 노드부터 시작해서 깊이 별로 가로방향을 먼저 탐색해나가는 방법.
- 위의 그림에서는 루트노드인 A(깊이 0) -> 그리고 그 자식노드인 B, C(깊이 1) -> 그리고 B와 C의 자식 노드들인 D, E, F(깊이 2) -> 마지막으로 G(깊이 3) 순서, 즉 ABCD…