打我一个OOP!
面向对象编程的两个重要组成部分是继承和组合。它们一起允许创建简单而强大的类层次结构来解决问题。您的任务是解析有关类层次结构的一系列语句,并回答有关层次结构的问题。
输入项
从文件或标准输入中读取关于类层次结构的一系列语句和问题,以最适合您的语言的情况为准。如果使用file选项,文件名将作为第一个参数传递给代码(函数参数或命令行参数,无论您选择哪个)。格式如下:
<statement> : <name> is a <name>. | <name> has a <name>.
<question> : Is <name> a <name>? | Does <name> have a <name>?
<name> : a-z | A-Z | sequence of alphanumerics or underscores, starting with a letter
输入将始终是语句,然后是问题。所有班级名称A-Z
均以大写英文字母()开头,所有成员名称均以小写英文字母(a-z
)开头。所有名称均区分大小写- ABC123
与的类不同Abc123
。
不会有任何周期性继承-如果B
继承自A
,A
不会继承B
或任何B
的子代。
只有类名将成为层次结构的一部分-诸如foo is a bar.
或document has a name.
不会发生这样的语句。
输出量
一系列真值或假值,作为对查询的答案,写入标准输出或作为函数的返回值。如果您没有足够的信息来回答问题(例如,涉及您在语句中未曾看到的姓名的问题),请使用假值进行回答。
测试用例
情况1:
输入:
B is a A.
C is a B.
A has a foo.
Does B have a foo?
Is C a A?
Is D a A?
输出:
True
True
False
情况2:
输入:
Cop is a Person.
Criminal is a Person.
Sheriff is a Cop.
Crooked_Cop is a Cop.
Crooked_Cop is a Criminal.
BankRobber is a Criminal.
Cop has a badge.
Criminal has a criminal_record.
Person has a name.
Is Crooked_Cop a Person?
Does Criminal have a name?
Is Crooked_Cop a BankRobber?
Does Person have a potato?
Is Cop a Cop?
输出:
True
True
False
False
True
规则
- 您可以使用功能或程序来回答
- 禁止出现标准漏洞
- 这是代码高尔夫球,因此最短的正确答案(以字节为单位)将获胜
- 获奖答案将在一周内选定
祝您好运,OOP与您同在!
排行榜
这篇文章底部的堆栈摘录从答案a)生成排行榜,答案是每种语言的最短解决方案列表,b)则是总体排行榜。
为确保您的答案显示出来,请使用以下Markdown模板以标题开头。
## Language Name, N bytes
N
您提交的文件大小在哪里。如果您提高了分数,则可以通过打败旧分数来保持标题。例如:
## Ruby, <s>104</s> <s>101</s> 96 bytes
如果要在标头中包含多个数字(例如,因为您的分数是两个文件的总和,或者您想单独列出解释器标志罚分),请确保实际分数是标头中的最后一个数字:
## Perl, 43 + 2 (-p flag) = 45 bytes
您还可以将语言名称设置为链接,然后该链接将显示在代码段中:
## [><>](http://esolangs.org/wiki/Fish), 121 bytes
<style>body { text-align: left !important} #answer-list { padding: 10px; width: 290px; float: left; } #language-list { padding: 10px; width: 290px; float: left; } table thead { font-weight: bold; } table td { padding: 5px; }</style><script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <link rel="stylesheet" type="text/css" href="//cdn.sstatic.net/codegolf/all.css?v=83c949450c8b"> <div id="language-list"> <h2>Shortest Solution by Language</h2> <table class="language-list"> <thead> <tr><td>Language</td><td>User</td><td>Score</td></tr> </thead> <tbody id="languages"> </tbody> </table> </div> <div id="answer-list"> <h2>Leaderboard</h2> <table class="answer-list"> <thead> <tr><td></td><td>Author</td><td>Language</td><td>Size</td></tr> </thead> <tbody id="answers"> </tbody> </table> </div> <table style="display: none"> <tbody id="answer-template"> <tr><td>{{PLACE}}</td><td>{{NAME}}</td><td>{{LANGUAGE}}</td><td>{{SIZE}}</td><td><a href="{{LINK}}">Link</a></td></tr> </tbody> </table> <table style="display: none"> <tbody id="language-template"> <tr><td>{{LANGUAGE}}</td><td>{{NAME}}</td><td>{{SIZE}}</td><td><a href="{{LINK}}">Link</a></td></tr> </tbody> </table><script>var QUESTION_ID = 61097; var ANSWER_FILTER = "!t)IWYnsLAZle2tQ3KqrVveCRJfxcRLe"; var COMMENT_FILTER = "!)Q2B_A2kjfAiU78X(md6BoYk"; var OVERRIDE_USER = 45941; var answers = [], answers_hash, answer_ids, answer_page = 1, more_answers = true, comment_page; function answersUrl(index) { return "https://api.stackexchange.com/2.2/questions/" + QUESTION_ID + "/answers?page=" + index + "&pagesize=100&order=desc&sort=creation&site=codegolf&filter=" + ANSWER_FILTER; } function commentUrl(index, answers) { return "https://api.stackexchange.com/2.2/answers/" + answers.join(';') + "/comments?page=" + index + "&pagesize=100&order=desc&sort=creation&site=codegolf&filter=" + COMMENT_FILTER; } function getAnswers() { jQuery.ajax({ url: answersUrl(answer_page++), method: "get", dataType: "jsonp", crossDomain: true, success: function (data) { answers.push.apply(answers, data.items); answers_hash = []; answer_ids = []; data.items.forEach(function(a) { a.comments = []; var id = +a.share_link.match(/\d+/); answer_ids.push(id); answers_hash[id] = a; }); if (!data.has_more) more_answers = false; comment_page = 1; getComments(); } }); } function getComments() { jQuery.ajax({ url: commentUrl(comment_page++, answer_ids), method: "get", dataType: "jsonp", crossDomain: true, success: function (data) { data.items.forEach(function(c) { if (c.owner.user_id === OVERRIDE_USER) answers_hash[c.post_id].comments.push(c); }); if (data.has_more) getComments(); else if (more_answers) getAnswers(); else process(); } }); } getAnswers(); var SCORE_REG = /<h\d>\s*([^\n,<]*(?:<(?:[^\n>]*>[^\n<]*<\/[^\n>]*>)[^\n,<]*)*),.*?(\d+)(?=[^\n\d<>]*(?:<(?:s>[^\n<>]*<\/s>|[^\n<>]+>)[^\n\d<>]*)*<\/h\d>)/; var OVERRIDE_REG = /^Override\s*header:\s*/i; function getAuthorName(a) { return a.owner.display_name; } function process() { var valid = []; answers.forEach(function(a) { var body = a.body; a.comments.forEach(function(c) { if(OVERRIDE_REG.test(c.body)) body = '<h1>' + c.body.replace(OVERRIDE_REG, '') + '</h1>'; }); var match = body.match(SCORE_REG); if (match) valid.push({ user: getAuthorName(a), size: +match[2], language: match[1], link: a.share_link, }); else console.log(body); }); valid.sort(function (a, b) { var aB = a.size, bB = b.size; return aB - bB }); var languages = {}; var place = 1; var lastSize = null; var lastPlace = 1; valid.forEach(function (a) { if (a.size != lastSize) lastPlace = place; lastSize = a.size; ++place; var answer = jQuery("#answer-template").html(); answer = answer.replace("{{PLACE}}", lastPlace + ".") .replace("{{NAME}}", a.user) .replace("{{LANGUAGE}}", a.language) .replace("{{SIZE}}", a.size) .replace("{{LINK}}", a.link); answer = jQuery(answer); jQuery("#answers").append(answer); var lang = a.language; lang = jQuery('<a>'+lang+'</a>').text(); languages[lang] = languages[lang] || {lang: a.language, lang_raw: lang.toLowerCase(), user: a.user, size: a.size, link: a.link}; }); var langs = []; for (var lang in languages) if (languages.hasOwnProperty(lang)) langs.push(languages[lang]); langs.sort(function (a, b) { if (a.lang_raw > b.lang_raw) return 1; if (a.lang_raw < b.lang_raw) return -1; return 0; }); for (var i = 0; i < langs.length; ++i) { var language = jQuery("#language-template").html(); var lang = langs[i]; language = language.replace("{{LANGUAGE}}", lang.lang) .replace("{{NAME}}", lang.user) .replace("{{SIZE}}", lang.size) .replace("{{LINK}}", lang.link); language = jQuery(language); jQuery("#languages").append(language); } }</script>
Does Criminal have a name?
等于True
?所有对象都有名称吗?