ØMQ是一个消息系统

ZeroMQ是一个消息系统，也被称为“消息中间件”。它被广泛的用于经济、游戏、嵌入式等领域。

什么是消息系统

打个比方，消息系统就像我们使用的 …

A. Fox And Snake

Implementation

(n, m) = map(int, raw_input().split())

res = []

for i in xrange(n):
    if i % 2 == 0:
        res.append('#' * m)
    elif (i / 2) % 2 == 0:
        res.append('.' * (m - 1) + '#')
    else:
        res.append('#' + '.' * (m - 1))

for line in res:
    print line

B. Fox And Two Dots

DFS …

A. Maximum in Table

Simulation.

n = int(raw_input())
g = [[1 for i in xrange(n)] for j in xrange(n)]

for i in xrange(1, n):
    for j in xrange(1, n):
        g[i][j] = g[i - 1][j] + g[i][j - 1]

print g[n - 1][n - 1]

B …

A. Pasha and Pixels

Brute force.

There are multiple ways to form a 2*2 square at one single step.

So at every step, we have to check the neighbours of pixel that is colored black.

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <vector>

using namespace std;

#define …

Description

Given a sequence of integer numbers, try to find the median of the sequence.

Extending

• Make sure your code can get the right answer in any conditions
• Make sure your code work effectively on some special kinds of sequence. For example, ordered sequence or a nearly ordered one, a …

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 …