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堆糖笔试

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问题一:用至少两种方法实现方法字符串的逆序。比如输入abcdefg,返回 gfedcba

思路一:

  • 输入字符串,将字符串转换为char数组,利用for循环将char数组内的内容逆序.将char数组转换为字符串.
  • 代码:test1/src/test1/com/main/huihui/StringRollbackTool.java
  • 测试:test1/src/test1/com/main/huihui/StringRollbackTest.java

思路二:

  • 利用StringBuilder提供的reverse方法将字符串反转
  • 代码:test1/src/test1/com/main/huihui/StringRollbackTest.java

问题二:写一个 Web 应用,输入关键词(比如编程),将豆瓣搜索出来的书籍 http://book.douban.com/tag/%E7%BC%96%E7%A8%8B 列出来,并且将亚马逊 Kindle 版本购买价格查询出来

思路:

  • 0.创建书籍的model,属性name,price,建立一个关于书籍model的LinkList
  • 1.前端输入关键字,后台获取关键字,生成要访问的页面的URL
  • 2.用Jsoup爬取URL网页内容,提取书籍名称和书籍的链接地址,然后根据提取出的链接在次爬取提取的链接,取出电子书的价格
  • 3.将提取的书名和价格封装到书籍model对象,add到LinkList
  • 4.将LinkList发送到页面,提取数据,展示数据.

代码:

  • 书籍model:/test2/src/com/main/huihui/tool/UrlBookModel.java
  • 抓取页面信息:/test2/src/com/main/huihui/tool/JsoupTool.java
  • servlet:/test2/src/com/main/huihui/servlet/ServiceServlet.java
  • filter:/test2/src/com/main/huihui/filter/EncodeFilter.java

问题三:读取网页 http://taoduanfang.baijia.baidu.com/article/40410 的正文, 算出其中出现次数最多的词汇, “的”, “我们”, “你们”之类的常见词不算, 取 top10 即可

思路:

  • 0.根据提供的具体网页,用Jsoup抓取页面信息.
  • 1.利用je-analysis进行中文分词
  • 2.将分离出的词汇存储到TreeMap中,词汇为key,出现的次数为value.
  • 3.将TreeMap转换为ArrayList,根据value的值进行从大到小的排序.
  • 4.读取前十个出现次数最多的词汇

代码:

  • 抓取页面正文:test3/src/com/main/huihui/tool/Tool.java
  • 分析正文:test3/src/com/main/huihui/analyzer/ArticleAnalyzer.java
  • 测试:test3/src/com/main/huihui/test/WordAnylizeTest.java

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