在数据通信协议中，可选的信息或字段通常使用type-length-value（a.k.a TLV）元素来进行编码。

• Type - 类型

用来标示字段类型的值，通常是一个 …

From Ace of Programming Interview, Cpt1 - Hiring Programmers: The Inside Story

Establish a Rapport

For an interviewee, one the the most efficient way to build a rapport is to try to see things in from the interviewer's perspective.

• understand the motivation of the interviewer
• establishing a common ground
• adapting your …

Ian McAllister, GM at Amazon. I lead the AmazonSmile program.

First, let’s break “getting things done” into two components: “excellent functional skills” and “drive”. Someone with great functional skills but poor drive will not get (enough) things done. Someone with great drive but poor functional skills will not get …

Hey man, I don't know that stuff

Stevey's talking aboooooout

If my boss thinks it's important

I'm gonna get fiiiiiiiiiired

Oooh yeah baaaby baaaay-beeeeee....

非技术部分

热身

好好读一本讲数据结构和算法的书

熟悉一些 …

题目

在一个平面上，有n+m条蛇，其中n条蛇沿水平方向（y轴方向）移动，m条蛇沿竖直方向（x轴方向）移动。

现给出这些蛇头和尾所在的坐标点，求出这n+m条蛇在此时共有多少个交点。在同一个方向移动的 …

最大导出子图（maximal induced graph）

你现在在组织一个学术会议。现在你有一份人员名单。假定名单中的每一个人都同意到达，并且有充 …

热身题 - 24Game

原题请戳我

题意

给你一个包含整数1...n的集合S。接下来进行n-1次操作，每次操作从集合S中选取两个数，在加、减、乘三种运算中选取一种，将结 …

问题

对于一个字符串S，求S的循环的同构字符串S’中字典序最小的一个。

我们举例说明，字符串"abcd"的循环同构字符串有：["abcd", "bcda", "cdab", "dabc"]。

题目的目标是 …

写在前面

问题是非常流行的，也确实流行了一阵的system-design问题。在知乎上再次被人提起。然后我非常欣赏陈硕的回答。所以要写一篇 …

Introduction

There are a lot of interview problem based on the 1D-array, which is the one of the easiest "data structure".

But the problem about that simple data structure might not be that simple. Here is the summary of the problem about 1D-array.

Of course, most of them come from …