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# Header | Header | 基本排版 | |
- Unordered List |
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1. Ordered List |
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- [ ] Todo List |
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> Blockquote | Blockquote |
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**Bold font** | Bold font | ||
*Italics font* | Italics font | ||
~~Strikethrough~~ | |||
19^th^ | 19th | ||
H~2~O | H2O | ||
++Inserted text++ | Inserted text | ||
==Marked text== | Marked text | ||
[link text](https:// "title") | Link | ||
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`Code` | Code |
在筆記中貼入程式碼 | |
```javascript var i = 0; ``` |
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:smile: | ![]() |
Emoji list | |
{%youtube youtube_id %} | Externals | ||
$L^aT_eX$ | LaTeX | ||
:::info This is a alert area. ::: |
This is a alert area. |
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Eulerian Cycle
歐拉迴路
每個頂點都是偶數邊(自己走到自己不算),且每個點都要能走到每個點,因此任兩個點的邊數都是2(來回),開一個cnt紀錄當前節點走到哪一個其他節點了,把每一個節點都走過一遍後,此迴路就是歐拉迴路,注意是遞迴完的時候才紀錄,也就是backtracking