1、unordered_set
https://blog.csdn.net/dream_you_to_life/article/details/46785741
2、关于斐波那契数列三种解法及时间复杂度分析
https://blog.csdn.net/beautyofmath/article/details/48184331
学到:a、可以利用循环来避免递归的“重复计算”问题。b、矩阵快速幂
3、位运算总结
https://blog.csdn.net/sinat_35121480/article/details/53510793
4、快速幂取模
https://blog.csdn.net/ltyqljhwcm/article/details/53043646
对于计算高次幂的问题,可以考虑该知识点。
5、判断一个单链表是否有环
http://mp.weixin.qq.com/s/oglfqWmsoFn9orOs1-Fp7A6、并查集
http://blog.sina.com.cn/s/blog_150a48b7b0102wg9m.html7、链表
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.转型
https://blog.csdn.net/Xscarlet/article/details/1559999
11.函数声明和初始化
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)详解 cin.tie(NULL)--加速
http://www.bkjia.com/ASPjc/951313.html