blocks|key|1523982|text|my+@l+=+(
'10+NE+HARRISBURG',
'4+E+HASWELL',
'2+SE+OAKLEY',
'6+SE+REDBIRD',
'PROVO',
'6+W+EADS',
'21+N+HARRISON',
);

foreach(@l)+{|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1523983|据胡布斯说，我更改了正则表达式|unstyled|1523984|++++my($beg,+$rest)+=+($_+=~+/%5E(\d*\s(?:[NS]%7C[NS]?[EW])*)?(.*)$/);
++++print+"beg=$beg+\trest=$rest\n";++++
}|1523985|输出：|1523986|beg=10+NE+++rest=HARRISBURG
beg=4+E+++++rest=HASWELL
beg=2+SE++++rest=OAKLEY
beg=6+SE++++rest=REDBIRD
beg=++++rest=PROVO
beg=6+W+++++rest=EADS
beg=21+N++++rest=HARRISON|1523987|对于shinjuo，如果你只想运行一个字符串，你可以这样做：|1523988|++my($beg,+$rest)+=+($l[3]+=~+/%5E(\d*\s(?:[NS]%7C[NS]?[EW])*)?(.*)$/);
++print+"beg=$beg+\trest=$rest\n";|1523989|为了避免出现未初始化值的警告，您必须测试是否定义了$beg：|1523990|print+defined$beg?"beg=$beg\t":"",+"rest=$rest\n";|1523991|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|X|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$B|C]]|$1|M|3|N|5|F|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$B|C]]|$1|Q|3|R|5|F|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$B|C]]|$1|U|3|-4|5|F|7|15|8|@]|9|@]|A|$]]]|V|$]]

<pre><code>my @l = (
'10 NE HARRISBURG',
'4 E HASWELL',
'2 SE OAKLEY',
'6 SE REDBIRD',
'PROVO',
'6 W EADS',
'21 N HARRISON',
);

foreach(@l) {
</code></pre>

<h3>according to hoobs i changed the regex</h3>

<pre><code>    my($beg, $rest) = ($_ =~ /^(\d*\s(?:[NS]|[NS]?[EW])*)?(.*)$/);
    print "beg=$beg \trest=$rest\n";    
}
</code></pre>

<p>output:</p>

<pre><code>beg=10 NE   rest=HARRISBURG
beg=4 E     rest=HASWELL
beg=2 SE    rest=OAKLEY
beg=6 SE    rest=REDBIRD
beg=    rest=PROVO
beg=6 W     rest=EADS
beg=21 N    rest=HARRISON
</code></pre>

<p>for shinjuo, if you want to run only one string you can do :</p>

<pre><code>  my($beg, $rest) = ($l[3] =~ /^(\d*\s(?:[NS]|[NS]?[EW])*)?(.*)$/);
  print "beg=$beg \trest=$rest\n";
</code></pre>

<p>and to avoid warning on uninitialized value you have to test if $beg is defined:</p>

<pre><code>print defined$beg?"beg=$beg\t":"", "rest=$rest\n";
</code></pre>


blocks|key|1523939|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1523940|for+my+$s+(@strings)+{
++++my+@fields+=+split+/\s%2B/,+$s,+3;
++++my+$city+=+$fields[-1];
}|code-block|syntax|javascript|1523941|您可以通过测试数组大小来确定字段数：|1523942|my+$n+=+@fields;|1523943|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>Try this: </p>

<pre><code>for my $s (@strings) {
    my @fields = split /\s+/, $s, 3;
    my $city = $fields[-1];
}
</code></pre>

<p>You can test the array size to determine the number of fields:</p>

<pre><code>my $n = @fields;
</code></pre>


blocks|key|3933488|text|看起来您总是想要split()结果中的最后一个元素。或者您可以使用m/(\S%2B)$/。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3933489|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

<p>Looks like you always want the very last element in the result of split(). Or you can go with m/(\S+)$/.</p>


blocks|key|3933560|text|我们不能假设总是有一个城市名称，并且它出现在一行的最后吗？如果是这种情况，则将该行拆分，并保留最后一部分。下面是一个单行命令行解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3933561|perl+-lne+'split+;+print+$_[-1]'+input.txt|code-block|syntax|javascript|3933562|输出：|3933563|HARRISBURG
HASWELL
OAKLEY
REDBIRD
PROVO
EADS
HARRISON|3933564|更新1|offset|length|style|BOLD|3933565|如果您已经编写了像SAN+FRANCISCO这样的城市名称(在下面的注释中发现了这种情况)，则此解决方案将不起作用。|3933566|你的输入数据来自哪里？如果是您自己生成的，则应添加分隔符。如果有人为您生成了它，请他们使用分隔符重新生成它。解析它将成为孩子们的游戏。|3933567|#+replace+";"+for+your+delimiter
perl+-lne+'split+";"+;+print+$_[-1]'+input.txt|3933568|entityMap^0|0|0|0|0|0|3|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@$M|13|N|14|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

<p>Can't we assume there is always a city name and that it appears last on a line? If that's the case, split the line and keep the last portion of it. Here's a one liner command line solution:</p>

<pre><code>perl -lne 'split ; print $_[-1]' input.txt
</code></pre>

<p>Output:</p>

<pre><code>HARRISBURG
HASWELL
OAKLEY
REDBIRD
PROVO
EADS
HARRISON
</code></pre>

<p><strong>Update 1</strong></p>

<p>This solution won't work if you have composed city names like SAN FRANCISCO (case spotted in a comment below). </p>

<p>Where is your input data coming from? If you have generated it yourself, you should add delimiters. If someone generated it for you, ask them to regenerate it with delimiters. Parsing it will then become child's play.</p>

<pre><code># replace ";" for your delimiter
perl -lne 'split ";" ; print $_[-1]' input.txt
</code></pre>


blocks|key|1527401|text|正则表达式解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1527402|​|1527403|解决方案1:保留所有内容(vol7ron的电子邮件解决方案)|1527404|1527405|#!/usr/bin/perl+-w++++

use+strict;+
use+Data::Dumper;+++

+++sub+main{++++
++++++my+@strings+=+(++++
++++++++++++++++++++++'10+NE+HARRISBURG'++++
++++++++++++++++++++,+'4+E+HASWELL'++++
++++++++++++++++++++,+'2+SE+OAKLEY'++++
++++++++++++++++++++,+'6+SE+REDBIRD'++++
++++++++++++++++++++,+'PROVO'++++
++++++++++++++++++++,+'6+W+EADS'++++
++++++++++++++++++++,+'21+N+HARRISON'++++
++++++++++++++++++++,+'32+SAN+FRANCISCO'+
++++++++++++++++++++,+''+++
++++++++++++++++++++,+'15+NEW+YORK'++++
++++++++++++++++++++,+'15+NNW+NEW+YORK'++++
++++++++++++++++++++,+'15+NW+NEW+YORK'+++++
++++++++++++++++++++,+'NW+NEW+YORK'++++
++++++++++++++++++++);+++++++

++++++my+%25hash;
++++++my+$count=0;
++++++for+(@strings){++++
+++++++++if+(/\d*\s*[NS]{0,2}[EW]{0,1}\s%2B/){
++++++++++++#+if+there+was+a+speed+/+direction
++++++++++++$hash{$count}{wind}+=+$&;
++++++++++++$hash{$count}{city}+=+$';
+++++++++}+else+{
++++++++++++#+if+there+was+only+a+city
++++++++++++$hash{$count}{city}+=+$_;
+++++++++}
+++++++++$count%2B%2B;
++++++}++++
++++++
++++++print+Dumper(\%25hash);++
+++}++++
+++++++
+++main();++|code-block|syntax|javascript|1527406|1527407|解决方案2:去掉你不需要的东西|1527408|1527409|#!/usr/bin/perl+-w++++

use+strict;++++

+++sub+main{++++
++++++my+@strings+=+(++++
++++++++++++++++++++++'10+NE+HARRISBURG'++++
++++++++++++++++++++,+'4+E+HASWELL'++++
++++++++++++++++++++,+'2+SE+OAKLEY'++++
++++++++++++++++++++,+'6+SE+REDBIRD'++++
++++++++++++++++++++,+'PROVO'++++
++++++++++++++++++++,+'6+W+EADS'++++
++++++++++++++++++++,+'21+N+HARRISON'++++
++++++++++++++++++++,+'32+SAN+FRANCISCO'++++
++++++++++++++++++++,+'15+NEW+YORK'++++
++++++++++++++++++++,+'15+NNW+NEW+YORK'++++
++++++++++++++++++++,+'15+NW+NEW+YORK'+++++
++++++++++++++++++++,+'NW+NEW+YORK'+++++
++++++++++++++++++++);++++

++++++for+my+$elem+(@strings){++++
+++++++++$elem+=~+s/\d*\s*[NS]{0,2}[EW]{0,1}\s%2B(\w*)/$1/;++++
++++++}++++

++++++$"="\n";++++
++++++print+"@strings\n";++++++++
+++}++++
+++++++
+++main();++++|1527410|1527411|更新：|1527412|按照vol7ron的建议和例子进行修改，使用重复运算符工作。这将去除前导数字和方向，如果缺少数字或方向(或两者)，则不会中断。|offset|length|1527413|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/183181/vol7ron^0|0|0|0|0|0|0|0|0|0|0|0|2|7|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|18|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|1A|8|@]|9|@]|A|$J|K]]|$1|L|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1C|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|P|3|Q|5|I|7|1E|8|@]|9|@]|A|$J|K]]|$1|R|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1G|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1H|8|@]|9|@$W|1I|X|1J|1|1K]]|A|$]]|$1|Y|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

<h1>Regex Solution</h1>
<br />
<h2>Solution 1: Keep everything (vol7ron's emailed solution)</h2>
<hr />
<pre><code>#!/usr/bin/perl -w    

use strict; 
use Data::Dumper;   

   sub main{    
      my @strings = (    
                      '10 NE HARRISBURG'    
                    , '4 E HASWELL'    
                    , '2 SE OAKLEY'    
                    , '6 SE REDBIRD'    
                    , 'PROVO'    
                    , '6 W EADS'    
                    , '21 N HARRISON'    
                    , '32 SAN FRANCISCO' 
                    , ''   
                    , '15 NEW YORK'    
                    , '15 NNW NEW YORK'    
                    , '15 NW NEW YORK'     
                    , 'NW NEW YORK'    
                    );       

      my %hash;
      my $count=0;
      for (@strings){    
         if (/\d*\s*[NS]{0,2}[EW]{0,1}\s+/){
            # if there was a speed / direction
            $hash{$count}{wind} = $&amp;;
            $hash{$count}{city} = $';
         } else {
            # if there was only a city
            $hash{$count}{city} = $_;
         }
         $count++;
      }    
      
      print Dumper(\%hash);  
   }    
       
   main();  
</code></pre>
<br />
<h2>Solution 2: Strip off what you don't need</h2>
<hr />
<pre><code>#!/usr/bin/perl -w    

use strict;    

   sub main{    
      my @strings = (    
                      '10 NE HARRISBURG'    
                    , '4 E HASWELL'    
                    , '2 SE OAKLEY'    
                    , '6 SE REDBIRD'    
                    , 'PROVO'    
                    , '6 W EADS'    
                    , '21 N HARRISON'    
                    , '32 SAN FRANCISCO'    
                    , '15 NEW YORK'    
                    , '15 NNW NEW YORK'    
                    , '15 NW NEW YORK'     
                    , 'NW NEW YORK'     
                    );    

      for my $elem (@strings){    
         $elem =~ s/\d*\s*[NS]{0,2}[EW]{0,1}\s+(\w*)/$1/;    
      }    

      $&quot;=&quot;\n&quot;;    
      print &quot;@strings\n&quot;;        
   }    
       
   main();    
</code></pre>
<hr />
<h3>Update:</h3>
<p>Making the changes with <a href="https://stackoverflow.com/users/183181/vol7ron">vol7ron</a>'s suggestion and example, using the repetition operator worked.  This will strip off leading digits and the direction and won't break if the digits or direction (or both) are missing.</p>


<p>I have a bunch of strings in perl that all look like this:</p>

<pre><code>10 NE HARRISBURG
4 E HASWELL
2 SE OAKLEY
6 SE REDBIRD
PROVO
6 W EADS
21 N HARRISON
</code></pre>

<p>What I am needing to do is remove the numbers and the letters from before the city names. The problem I am having is that it varies a lot from city to city. The data is almost never the same. Is it possible to remove this data and keep it in a separate string?</p>


Splitting a changing string with perl

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

教程

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云智能顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

EdgeOne AI 安全实战专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云AI代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

功能1上新10个字符

功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符。

功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符

功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

功能4上新

文章&问答评论现已支持表情

全新交互，全新视觉，新增快捷键、悬浮工具栏、高亮块等功能并同时优化现有功能，全面提升创作效率和体验

社区富文本编辑器全新改版！诚邀体验～ 

精选全网热门MCP server，让你的AI更好用 🚀

💥开发者 MCP广场重磅上线！

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

聚焦“写作效率、视觉美观与运行性能”三方面进行全面升级，为您提供更高效、稳定的创作环境

社区富文本&Markdown编辑器全新改版上线，欢迎大家体验!

诚挚邀请您参与本次调研，分享您的真实使用感受与建议。您的反馈至关重要，感谢您的支持与参与！

社区新版编辑器体验调研

我在perl中有一堆字符串，看起来都是这样的：10 NE HARRISBURG4 E HASWELL2 SE OAKLEY6 SE REDBIRDPROVO6 W EADS21 N HARRISON我需要做的是删除城市名称前的数字和字母。我遇到的问题是，它在不同的城市有很大的不同。数据几乎从来都不一样。是否可以删除此数据并将其保留在单独的字符串中？

问使用perl拆分更改的字符串
EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用perl拆分更改的字符串EN

回答 5

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用perl拆分更改的字符串
EN