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<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/hint.css/2.4.1/hint.min.css"><p>这个问题很多人问过我，excel自带的函数组合也能够做到，但实际上效果一般都不理想，而且再次使用也很麻烦，所以自己写了个自定义函数。<br><a id="more"></a><br>这个自定义函数，是将所有符合条件的文本放在同一个单元格里，按给定的分隔符分隔。</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line"><span class="function">Public Function <span class="title">Contxts</span><span class="params">(delimiter As String, ParamArray args()</span> As Variant)</span></span><br><span class="line"><span class="function"> Dim tmptext As Variant, i As Variant, Cellv As Variant</span></span><br><span class="line"><span class="function"> Dim Cell As Range</span></span><br><span class="line"><span class="function"> tmptext </span>= <span class="string">""</span></span><br><span class="line"> For i = <span class="number">0</span> <span class="function">To <span class="title">UBound</span><span class="params">(args)</span></span></span><br><span class="line"><span class="function"> If Not <span class="title">IsMissing</span><span class="params">(args(i)</span>) Then</span></span><br><span class="line"><span class="function"> Select Case <span class="title">TypeName</span><span class="params">(args(i)</span>)</span></span><br><span class="line"><span class="function"> Case "Range"</span></span><br><span class="line"><span class="function"> For Each Cell In <span class="title">args</span><span class="params">(i)</span></span></span><br><span class="line"><span class="function"> If Cell <> "" Then</span></span><br><span class="line"><span class="function"> tmptext </span>= tmptext & Cell & delimiter</span><br><span class="line"> End If</span><br><span class="line"> Next Cell</span><br><span class="line"> Case <span class="string">"Variant()"</span></span><br><span class="line"> <span class="function">For Each Cellv In <span class="title">args</span><span class="params">(i)</span></span></span><br><span class="line"><span class="function"> If Cellv <> "" Then</span></span><br><span class="line"><span class="function"> tmptext </span>= tmptext & Cellv & delimiter</span><br><span class="line"> End If</span><br><span class="line"> Next Cellv</span><br><span class="line"> Case Else</span><br><span class="line"> <span class="function">If <span class="title">args</span><span class="params">(i)</span> <> "" Then</span></span><br><span class="line"><span class="function"> tmptext </span>= tmptext & args(i) & delimiter</span><br><span class="line"> End If</span><br><span class="line"> End Select</span><br><span class="line"> End If</span><br><span class="line"> Next i</span><br><span class="line"> Contxts = Left(tmptext, Len(tmptext) - <span class="number">1</span>)</span><br><span class="line">End Function</span><br></pre></td></tr></table></figure>
<p>函数实际上就是利用if得到数组，并把所有的数组用分隔符重新组合，下图就是使用函数的一个例子。</p>
<p><img src="/images/excel-example.png" alt="example"></p>
<p>这样的结果里没有排除重复值，所以我又写了一个函数，以应对这种情况。<br><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="function">Public Function <span class="title">Duplicates</span><span class="params">(s As String, delimiter As String)</span></span></span><br><span class="line"><span class="function"> Dim <span class="title">qt</span><span class="params">()</span> As String, str As String</span></span><br><span class="line"><span class="function"> Dim n As Long</span></span><br><span class="line"><span class="function"> qt </span>= Split(s, delimiter)</span><br><span class="line"> str = qt(<span class="number">0</span>) & <span class="string">","</span></span><br><span class="line"> For n = <span class="number">1</span> <span class="function">To <span class="title">UBound</span><span class="params">(qt)</span></span></span><br><span class="line"><span class="function"> If <span class="title">InStr</span><span class="params">(<span class="number">1</span>, str, qt(n)</span>) </span>= <span class="number">0</span> Then</span><br><span class="line"> str = str & qt(n) & <span class="string">","</span></span><br><span class="line"> End If</span><br><span class="line"> Next n</span><br><span class="line"> Duplicates = Left(str, Len(str) - <span class="number">1</span>)</span><br><span class="line">End Function</span><br></pre></td></tr></table></figure></p>
<p>这个函数对任何一个有固定分隔符的字符串，都能进行去重，并重新组合。</p>
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