待补充
给定一个按照升序排列的整数数组 nums，和一个目标值 target。找出给定目标值在数组中的开始位置和结束位置。
你的算法时间复杂度必须是 O(log n) 级别。
如果数组中不存在目标值，返回 [-1, -1]。
The sinking of the RMS Titanic is one of the most infamous shipwrecks in history. On April 15, 1912, during her maiden voyage, the Titanic sank after colliding with an iceberg, killing 1502 out of 2224 passengers and crew. This sensational tragedy shocked the international community and led to better safety regulations for ships.
One of the reasons that the shipwreck led to such loss of life was that there were not enough lifeboats for the passengers and crew. Although there was some element of luck involved in surviving the sinking, some groups of people were more likely to survive than others, such as women, children, and the upper-class.
记录在实际操作过程中遇到遇到的一些有意思的使用法.
本篇是笔者在学习 “Introduction to data mining”(《数据挖掘导论》)的英文最新版所记录的一些学习笔记。
2020.10.10 更新
很可惜的是，在多次迁移的过程中，本章的图片都丢失了。
食之无味，弃之可惜。所以暂且先保留在这里，以后再补全吧。
分为迭代器、文件读写、函数式编程三个部分，其中，前二者来源于 cookbook，其中加入了一些个人的理解和补正。函数式编程作为个人的扩充添加进来，主要参考了一些文章和书籍，因为很杂，就不一一列出。