203 Remove Linked List Elements

Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head.

示例1：

输入：head = [1,2,6,3,4,5,6], val = 6

输出：[1,2,3,4,5]

示例2：

输入：head = [], val = 1

输出：[]

示例3：

输入：head = [7,7,7,7], val = 7

输出：[]

链表理论基础

链表是一种通过指针串联在一起的线性结构，每一个节点由两部分组成，一个是数据域一个是指针域（存放指向下一个节点的指针），最后一个节点的指针域指向null（空指针的意思）。

数组06–总结

数组的理论基础

总线协议之 – UART

UART简介

UART: Universal Asynchronous Receiver Transmitter（通用异步收发器），

通用的串行、异步通信总线，它有两条数据线，实现全双工发送和接收。

考研英语100句–Day20

Sentence 96

Just as bosses and boards have finally sorted out their worst accounting and compliance troubles, and improved their feeble corporation governance, a new problem threatens to earn them — especially in America — the sort of nasty headlines that inevitably lead to heads rolling in the executive suite: data insecurity.

就在老板和董事会终于处理好其最严重的财务和规章问题，改善了公司薄弱的管理之后，又一个新问题正威胁着他们——尤其是在美国——这个问题就是数据不安全性，这会让他们出现在令人不快的新闻头条中，将不可避免地使高层们受到严惩。

考研英语100句–Day19

Sentence 91

But in her new book Join the Club, Tina Rosenberg contends that peer pressure can also be a positive force through what she calls the social cure, in which organizations and officials use the power of group dynamics to help individuals improve their lives and possibly the world.

但是，蒂娜·罗森堡在她的新书《加入俱乐部》中主张，同辈压力也可以通过她所说的“社会治疗”转化成一种积极的力量。在社会治疗的过程中，各机构及官员可以利用群体动力来帮助个人改善生活，甚至可能改善整个世界。

考研英语100句–Day18

Sentence 86

In his article “How Intelligent Is Intelligence Testing?”, Sternberg notes that traditional tests best assess analytical and verbal skills but fail to measure creativity and practical knowledge, components also critical to problem solving and life success.

在斯腾伯格的文章《智力测试有多明智？》中，他指出传统的测试能最大程度地评估分析能力和语言表达能力，但不能衡量创造力和实践知识，这些部分对于解决问题和获得人生成功也极其重要。

考研英语100句–Day17

Sentence 81

The Internet — and pressure from funding agencies, who are questioning why commercial publishers are making money from government-funded research by restricting access to it — is making access to scientific results a reality.

提供资金的机构施加压力，质疑为什么商业出版商可以通过限制人们查看政府资助的研究结果而从中牟利，来自这方面的压力和互联网正在使阅读科研结果成为现实。

考研英语100句–Day16

Sentence 76

Today, widespread social pressure to immediately go to college in conjunction with increasingly high expectations in a fast-moving world often causes students to completely overlook the possibility of taking a gap year.

如今，高中毕业后即刻升入大学这一普遍的社会压力，加之快速发展的世界对学生寄予越来越高的期望，这常常导致学生完全忽略了选择间隔年这一可能。

考研英语100句–Day15

Sentence 71

Infants are wired to look at parents’ faces to try to understand their world, and if those faces are blank and unresponsive — as they often are when absorbed in a device — it can be extremely disconcerting for the children.

婴幼儿天生会观察父母的表情，试图理解他们的世界，如果父母的脸上毫无表情和反应——沉浸于电子设备时经常如此——这会让孩子们极其不安。