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【题解】Running for Gold

j (e.g., r_{2,4}=3 means that athlete 2 was third in marathon 4 )....Federico considers athlete x superior to athlete y if athlete x ranked better than athlete y in at least...Find any athlete who is likely to get the gold medal (that is, an athlete who is superior to all other...athletes), or determine that there is no such athlete....If there is more than such one athlete, print any of them.

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聊聊同步辅助类CountDownLatch

start(); for (int athleteNo = 0; athleteNo < 5; athleteNo++) { new Thread(new Athlete...implements Runnable { Timer timer; String athleteName; public Athlete(Timer timer, String...start running athlete1 start running athlete2 start running athlete3 start running athlete4 start running...athlete0 has arrived There are 4 athletes did not reach the end athlete3 has arrived There are 3 athletes...did not reach the end athlete2 has arrived athlete1 has arrived There are 2 athletes did not reach the

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.Net中观察者模式（Observer）：C#事件

（发布） Gunshot(); } } 然后定义Athlete： /// /// 运动员 /// public class Athlete...athlete1 = new Athlete("Athlete1"); Athlete athlete2 = new Athlete("Athlete2"); //初始化裁判 Referee referee...= new Referee("Referee"); //运动员聆听枪声（订阅） referee.Gunshot = athlete1.Run; referee.Gunshot += athlete2....但是却解决了之前我们越到的问题： 1.赋值问题 referee.Gunshot = athlete1.Run; //编译错误修改为： referee.Gunshot += athlete1.Run;...athlete1 = new Athlete("Athlete1"); Athlete athlete2 = new Athlete("Athlete2"); //初始化裁判 Referee

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【C++】继承深度解析：继承方式和菱形虚拟继承的详解

以上述对象模型为例，在 Teacher 和 Athlete 继承 Person 时采用虚拟继承，即可避免 Student 同时拥有两份 Person 子对象。...\ / Student 如果Student同时继承Teacher和Athlete，他就会有两份Person成员（一次从Teacher一次从Athlete），这样会造成数据冗余...调用Student的Person的成员函数或者访问成员变量的时候，编译器就不知道选择Teacher中的还是Athlete中的那一份，就造成了二义性。...每个通过虚继承的中间类（Teacher、Athlete）内部不直接包含 Person 成员，而是包含一个指向共享 Person 的指针（实际上是偏移量）。...然后是非虚中间类（Teacher、Athlete）。最后是最派生类（Student）。这保证了虚基类只构造一次，防止重复初始化。

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基于bs4+requests爬取世界赛艇男运动员信息

athlete_list = soup.select('tr.resultsDetails li') for athlete in athlete_list[:5]: name = athlete.select...' + athlete.select('img')[0]['src'] print(name, position, img_url) 上面一段代码的运行结果如下图所示： ?...= soup.select('tr.resultsDetails li') item_list = [] for athlete in athlete_list: item = {}...item['name'] = athlete.select('h4 a')[0].text item['position'] = athlete.select('p.yPadding')[0]....text.strip() item['img_url'] = 'http://www.worldrowing.com' + athlete.select('img')[0]['src']

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第一次爬虫尝试

这是我之前学习爬虫时的一个课堂作业源代码如下： import json from urllib import request import time,random import csv all_athlete...utf-8") data_obj = json.loads(data) #json转python athleteLst = data_obj["data"]["ul"] for athlete...in athleteLst: d_url = "https://gw.m.163.com/olympic/2020/athlete/{}.json".format(athlete["athleteId...= d_data["data"]["athleteInfo"] node = {} node["name"] = athlete["athleteName"]...in all_athlete: writer.writerow(athlete) print("爬虫结束"）原理是从云端发送来的json数据使用python爬虫下来再进行字符串分割保留需要的内容

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基于bs4+requests爬取世界赛艇男运动员信息(进阶篇)

/2018-world-rowing-under-23-championships/u23-mens-eight/') soup = bs(response.text, 'html.parser') athlete_list...= soup.select('tr.resultsDetails li') item_list = [] for athlete in athlete_list: item = {}...item['name'] = athlete.select('h4 a')[0].text item['position'] = athlete.select('p.yPadding')[0]....text.strip() item['img_url'] = 'http://www.worldrowing.com' + athlete.select('img')[0]['src']...detail_url = 'http://www.worldrowing.com' + athlete.select('h4 a')[0]['href'] response = requests.get

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并发编程之CyclicBarrier

Athlete.java ：每个运动员都就位后才开始。...athleteList.add(new Athlete(cyclicBarrier,"鲍威尔")); athleteList.add(new Athlete(cyclicBarrier,..."盖伊")); athleteList.add(new Athlete(cyclicBarrier,"布雷克")); athleteList.add(new Athlete...(new Athlete(cyclicBarrier,"路人甲")); athleteList.add(new Athlete(cyclicBarrier,"路人乙"));...Executor executor = Executors.newFixedThreadPool(8); for (Athlete athlete : athleteList) {

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Django2.0 中文(urlshtml模版)

空字符串('' ) 零值(0 ) 特殊对象None 对象False（很明显） 9 ｛％％｝中不能使用（） 10 ｛％ empty ％｝循环中，如果值为空是显示其他内容 {% for athlete...in athlete_list %} {{ athlete.name }} {% empty %} There are no athletes....in athlete_list %} {{ athlete.name }} {% empty %} There are no athletes....in athlete_list %} {{ athlete.name }} {% empty %} There are no athletes....in athlete_list %} {{ athlete.name }} {% empty %} There are no athletes.

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Django内置模板标签

in athlete_list %} {{ athlete.name }} {% endfor %} 可以使用{% for obj in list reversed... {% for athlete in athlete_list %} {{ athlete.name }} {% empty %} Sorry,...athlete in athlete_list %} {{ athlete.name }} {% endfor %} {% else %} <...%} Number of athletes: {{ athlete_list|length }} {% elif athlete_in_locker_room_list %} Athletes...{% else %} No athletes. {% endif %} 上述例子中，如果athlete_list不为空，就会通过使用{{ athlete_list|length }}过滤器展示出

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Django安装及简单使用 1.2

{% if %} 标签接受 and ， or 或者 not 关键字来对多个变量做判断，或者对变量取反（ not )，例如： {% if athlete_list and coach_list %}...例如，给定一个运动员列表 athlete_list 变量，我们可以使用下面的代码来显示这个列表： {% for athlete in athlete_list %} {{ athlete.name...}} {% endfor %} # 给标签增加一个 reversed 使得该列表被反向迭代： {% for athlete in athlete_list reversed %}...... {% endfor %} 可以嵌套使用 {% for %} 标签： {% for athlete in athlete_list %} {{ athlete.name }} {% for sport in athlete.sports_played %} {{ sport }} {% endfor

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同步器

ExecutorService pool = Executors.newFixedThreadPool(3); public static void main(String[] args) { Athlete...subingtian = new Athlete("苏炳添", 1, barrier); Athlete boerte = new Athlete("博尔特", 2, barrier);...Athlete gaiyi = new Athlete("泰森盖伊", 3, barrier); pool.execute(subingtian); pool.execute(boerte...; } class Athlete implements Runnable { private String name; private Integer time; private...CyclicBarrier barrier; Athlete(String name, int time, CyclicBarrier barrier) { this.name

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【PAT乙级】射击比赛

AC代码： #include using namespace std; struct Athlete { string ID; int x,y;...double distance; }; bool Cmp(Athlete a1,Athlete a2) { return a1.distance > a2.distance; } int main...() { int n; cin >> n; vectorAthlete> v(n); for (int i = 0; i < n; i++) {

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高并发编程-CountDownLatch深入解析

).start(); for (int athleteNo = 0; athleteNo < 5; athleteNo++) { new Thread(new Athlete...implements Runnable { Timer timer; String athleteName; public Athlete(Timer timer,...start running athlete1 start running athlete2 start running athlete3 start running athlete4 start running...athlete0 has arrived There are 4 athletes did not reach the end athlete3 has arrived There are 3 athletes...did not reach the end athlete2 has arrived athlete1 has arrived There are 1 athletes did not reach the

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Django Template层之Template概述

button>登录或者注册 {% endif %} {% if athlete_list...%} Number of athletes: {{ athlete_list|length }} {% elif athlete_in_locker_room_list %} Athletes...{% else %} No athletes. {% endif %} {% for athlete in athlete_list %} {{ athlete.name

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【Python可视化】使用Pyecharts进行奥运会可视化分析～

', 'Nums'] athlete = athlete.sort_values(by="Year" , ascending=...', 'Nums'] athlete = athlete.sort_values(by="Year" , ascending=...[athlete.Season=='Summer'].iterrows()]) .add_yaxis("参赛人数", [row['Nums'] for _, row in athlete...[athlete.Season=='Winter'].iterrows()]) .add_yaxis("参赛人数", [row['Nums'] for _, row in athlete...', 'Nums'] athlete = athlete.sort_values(by="Year" , ascending=

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构建通用的 React 和 Node 应用

= athletes.filter((athlete) => athlete.id === id)[0]; if (!...{athlete.cover})` }; return ( athlete-full"> ..."> athlete.image}`}/> {athlete.name}, born in {athlete.birth} (Find out more on athlete.link...路径 athlete/:id 被映射为 AthletePage 。注意我们使用了命名参数 :id 。

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head first python选读(4):web 开发

(fe.include_header('web_app')) print(fe.start_form('http://www.baidu.com')) print(fe.para('Select a athlete...')) for athlete in athletes: print(fe.radio_button('select_athlete',athletes[athlete].name)) print...athletemodel athletes=athletemodel.get_from_store() #获取表单数据并放到一个字典中 form_data=cgi.FieldStorage() athlete_name...=form_data['name'].value # 渲染页面 print(fe.start_response()) print(fe.include_header(athlete_name)) print...(fe.u_list(athletes[athlete_name].top3())) print(fe.include_footer({'home':'/index.html','back':'gen_list.py

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CountDownLatch和CyclicBarrier解决运动员赛跑多线程问题

BrokenBarrierException, InterruptedException { for (int i=0;i<5;i++) { service.execute( new Athlete...//所有线程执行结束后 countDownLatch.await(); System.out.println("下一个环节"); } } class Athlete...CountDownLatch countDownLatch; private final CyclicBarrier cyclicBarrier; private final int id; Athlete

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hand first python 选读（4）

=a_name self.birth=a_birth self.scores=a_birth a = Athlete('Sarah Sweeney', '2002-6-17...好了，现在要给Athlete多加一个top3方法。...class Athlete: def __init__(self,a_name,a_birth=None,a_scores=[]): self.name=a_name...as data: line = data.readline() scores = line.split(',') return Athlete...+sec print(getFast('sarah.txt').name) 需求无节制加两个方法： add_time:给时间加多一个时间 add_times：追加一组时间 class Athlete

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点击加载更多

【题解】Running for Gold

聊聊同步辅助类CountDownLatch

.Net中观察者模式（Observer）：C#事件

【C++】继承深度解析：继承方式和菱形虚拟继承的详解

基于bs4+requests爬取世界赛艇男运动员信息

第一次爬虫尝试

基于bs4+requests爬取世界赛艇男运动员信息(进阶篇)

并发编程之CyclicBarrier

Django2.0 中文(urlshtml模版)

Django内置模板标签

Django安装及简单使用 1.2

同步器

【PAT乙级】射击比赛

高并发编程-CountDownLatch深入解析

Django Template层之Template概述

【Python可视化】使用Pyecharts进行奥运会可视化分析～

构建通用的 React 和 Node 应用

head first python选读(4):web 开发

CountDownLatch和CyclicBarrier解决运动员赛跑多线程问题

hand first python 选读（4）

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