59 lines
4.4 KiB
Markdown
59 lines
4.4 KiB
Markdown
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---
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title: ちょっとミスしてた
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author: kazu634
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date: 2007-12-06
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url: /2007/12/06/_714/
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wordtwit_post_info:
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- 'O:8:"stdClass":13:{s:6:"manual";b:0;s:11:"tweet_times";i:1;s:5:"delay";i:0;s:7:"enabled";i:1;s:10:"separation";s:2:"60";s:7:"version";s:3:"3.7";s:14:"tweet_template";b:0;s:6:"status";i:2;s:6:"result";a:0:{}s:13:"tweet_counter";i:2;s:13:"tweet_log_ids";a:1:{i:0;i:3411;}s:9:"hash_tags";a:0:{}s:8:"accounts";a:1:{i:0;s:7:"kazu634";}}'
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categories:
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- Perl
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---
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<div class="section">
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<p>
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最後の13桁目はチェックデジットだから、無視しなきゃいけなかった。だからこんな感じ:
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</p>
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<pre class="syntax-highlight">
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<span class="synStatement">use strict</span>;
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<span class="synStatement">use warnings</span>;
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<span class="synComment"># 変数の宣言</span>
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<span class="synStatement">my</span> <span class="synIdentifier">$temp_isbn</span>;
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<span class="synStatement">my</span> <span class="synIdentifier">$_odd</span>;
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<span class="synStatement">my</span> <span class="synIdentifier">$_even</span>;
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<span class="synComment"># 適当なisbn10を代入して、978をつける</span>
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<span class="synIdentifier">$temp_isbn</span> = <span class="synConstant">'978'</span> . <span class="synConstant">'4582744176'</span>;
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<span class="synStatement">print</span> <span class="synConstant">"isbn: "</span> . <span class="synIdentifier">$temp_isbn</span> . <span class="synConstant">"</span><span class="synSpecial">\n</span><span class="synConstant">"</span>;
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<span class="synComment"># 一桁ずつばらして配列@fooに代入</span>
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<span class="synStatement">my</span> <span class="synIdentifier">@foo</span> = <span class="synStatement">split</span>(<span class="synStatement">//</span>, <span class="synIdentifier">$temp_isbn</span>);
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<span class="synComment"># 奇数の処理</span>
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<span class="synComment"># @fooには13桁のisbnが入っている。配列は0-12まで。</span>
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<span class="synComment"># @foo[12]はチェックデジットなので、しかとする。</span>
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<span class="synStatement">print</span> <span class="synConstant">'Odd Number: '</span>;
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<span class="synStatement">for</span> (<span class="synStatement">my</span> <span class="synIdentifier">$i</span> = <span class="synConstant"></span>; <span class="synIdentifier">$i</span> <= <span class="synConstant">11</span>; <span class="synIdentifier">$i</span> = <span class="synIdentifier">$i</span> + <span class="synConstant">2</span>){
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<span class="synIdentifier">$_odd</span> += <span class="synIdentifier">$foo</span>[<span class="synIdentifier">$i</span>];
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<span class="synStatement">print</span> <span class="synIdentifier">$foo</span>[<span class="synIdentifier">$i</span>] . <span class="synConstant">" "</span>;
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}
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<span class="synStatement">print</span> <span class="synConstant">"</span><span class="synSpecial">\n</span><span class="synConstant">"</span>;
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<span class="synComment"># 偶数の処理。以下同文。</span>
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<span class="synStatement">print</span> <span class="synConstant">'Even Number: '</span>;
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<span class="synStatement">for</span> (<span class="synStatement">my</span> <span class="synIdentifier">$i</span> = <span class="synConstant">1</span>; <span class="synIdentifier">$i</span> <= <span class="synConstant">11</span>; <span class="synIdentifier">$i</span> = <span class="synIdentifier">$i</span> + <span class="synConstant">2</span>){
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<span class="synIdentifier">$_even</span> += <span class="synIdentifier">$foo</span>[<span class="synIdentifier">$i</span>];
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<span class="synStatement">print</span> <span class="synIdentifier">$foo</span>[<span class="synIdentifier">$i</span>] . <span class="synConstant">" "</span>;
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}
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<span class="synStatement">print</span> <span class="synConstant">"</span><span class="synSpecial">\n</span><span class="synConstant">"</span>;
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</pre>
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<ul>
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<li>
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元記事 <ul>
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<li>
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<a href="http://d.hatena.ne.jp/sirocco634/20071203#1196608244" onclick="__gaTracker('send', 'event', 'outbound-article', 'http://d.hatena.ne.jp/sirocco634/20071203#1196608244', '2007-12-03 – 武蔵の日記');" target="_blank">2007-12-03 – 武蔵の日記</a>
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</li>
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<li>
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<a href="http://d.hatena.ne.jp/sirocco634/20071202#1196605129" onclick="__gaTracker('send', 'event', 'outbound-article', 'http://d.hatena.ne.jp/sirocco634/20071202#1196605129', '2007-12-02 – 武蔵の日記');" target="_blank">2007-12-02 – 武蔵の日記</a>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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