積累各種好的連結

1、unordered_set

https://blog.csdn.net/dream_you_to_life/article/details/46785741

2、關于斐波那契數列三種解法及時間複雜度分析

https://blog.csdn.net/beautyofmath/article/details/48184331

學到：a、可以利用循環來避免遞歸的“重複計算”問題。b、矩陣快速幂

3、位運算總結

https://blog.csdn.net/sinat_35121480/article/details/53510793

4、快速幂取模

https://blog.csdn.net/ltyqljhwcm/article/details/53043646

對于計算高次幂的問題，可以考慮該知識點。

5、判斷一個單連結清單是否有環

http://mp.weixin.qq.com/s/oglfqWmsoFn9orOs1-Fp7A

6、并查集

http://blog.sina.com.cn/s/blog_150a48b7b0102wg9m.html

7、連結清單

https://blog.csdn.net/kevin_zhai/article/details/50494020

https://blog.csdn.net/zhoufen12345/article/details/76390278

8、singleton

https://blog.csdn.net/haoel/article/details/4028232

9.mutable

https://www.zhihu.com/question/64969053/answer/226142449

https://blog.csdn.net/iverson_1/article/details/5701813

10.轉型

https://blog.csdn.net/Xscarlet/article/details/1559999

11.函數聲明和初始化

https://blog.csdn.net/qq_29344757/article/details/76093216

12.const和constexpr

http://www.jb51.net/article/77352.htm

13 ios::sync_with_stdio(false)詳解      cin.tie(NULL)--加速

http://www.bkjia.com/ASPjc/951313.html