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<article class="content wrap" id="_content" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility">
<h1 id="Lucene_Net_Analysis_Cn_Smart_Utility" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility" class="text-break">Class Utility
</h1>
<div class="markdown level0 summary"><p><a class="xref" href="Lucene.Net.Analysis.Cn.Smart.SmartChineseAnalyzer.html">SmartChineseAnalyzer</a> utility constants and methods
<p>
<div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div></div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">Utility</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<span class="xref">System.Object.Equals(System.Object)</span>
</div>
<div>
<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.GetHashCode()</span>
</div>
<div>
<span class="xref">System.Object.GetType()</span>
</div>
<div>
<span class="xref">System.Object.MemberwiseClone()</span>
</div>
<div>
<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.html">Lucene.Net.Analysis.Cn.Smart</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.Analysis.SmartCn.dll</h6>
<h5 id="Lucene_Net_Analysis_Cn_Smart_Utility_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static class Utility</code></pre>
</div>
<h3 id="fields">Fields
</h3>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_COMMON_DELIMITER" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.COMMON_DELIMITER">COMMON_DELIMITER</h4>
<div class="markdown level1 summary"><p>Delimiters will be filtered to this character by <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.Hhmm.SegTokenFilter.html">SegTokenFilter</a></p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly char[] COMMON_DELIMITER</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_END_CHAR_ARRAY" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.END_CHAR_ARRAY">END_CHAR_ARRAY</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly char[] END_CHAR_ARRAY</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_MAX_FREQUENCE" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.MAX_FREQUENCE">MAX_FREQUENCE</h4>
<div class="markdown level1 summary"><p>Maximum bigram frequency (used in the smoothing function).</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly int MAX_FREQUENCE</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_NUMBER_CHAR_ARRAY" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.NUMBER_CHAR_ARRAY">NUMBER_CHAR_ARRAY</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly char[] NUMBER_CHAR_ARRAY</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_SPACES" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.SPACES">SPACES</h4>
<div class="markdown level1 summary"><p>Space-like characters that need to be skipped: such as space, tab, newline, carriage return.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly string SPACES</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_START_CHAR_ARRAY" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.START_CHAR_ARRAY">START_CHAR_ARRAY</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly char[] START_CHAR_ARRAY</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_STRING_CHAR_ARRAY" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.STRING_CHAR_ARRAY">STRING_CHAR_ARRAY</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static readonly char[] STRING_CHAR_ARRAY</code></pre>
</div>
<h5 class="fieldValue">Field Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="methods">Methods
</h3>
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<a id="Lucene_Net_Analysis_Cn_Smart_Utility_CompareArray_" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.CompareArray*"></a>
<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_CompareArray_System_Char___System_Int32_System_Char___System_Int32_" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.CompareArray(System.Char[],System.Int32,System.Char[],System.Int32)">CompareArray(Char[], Int32, Char[], Int32)</h4>
<div class="markdown level1 summary"><p>Compare two arrays starting at the specified offsets.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static int CompareArray(char[] larray, int lstartIndex, char[] rarray, int rstartIndex)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">larray</span></td>
<td><p>left array</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">lstartIndex</span></td>
<td><p>start offset into <code data-dev-comment-type="paramref" class="paramref">larray</code></p>
</td>
</tr>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">rarray</span></td>
<td><p>right array</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">rstartIndex</span></td>
<td><p>start offset into <code data-dev-comment-type="paramref" class="paramref">rarray</code></p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><p>0 if the arrays are equal,1 if <code data-dev-comment-type="paramref" class="paramref">larray</code> &gt;
<code data-dev-comment-type="paramref" class="paramref">rarray</code>, -1 if <code data-dev-comment-type="paramref" class="paramref">larray</code> &lt; <code data-dev-comment-type="paramref" class="paramref">rarray</code></p>
</td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_CompareArrayByPrefix_System_Char___System_Int32_System_Char___System_Int32_" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.CompareArrayByPrefix(System.Char[],System.Int32,System.Char[],System.Int32)">CompareArrayByPrefix(Char[], Int32, Char[], Int32)</h4>
<div class="markdown level1 summary"><p>Compare two arrays, starting at the specified offsets, but treating <code data-dev-comment-type="paramref" class="paramref">shortArray</code> as a prefix to <code data-dev-comment-type="paramref" class="paramref">longArray</code>.
As long as <code data-dev-comment-type="paramref" class="paramref">shortArray</code> is a prefix of <code data-dev-comment-type="paramref" class="paramref">longArray</code>, return 0.
Otherwise, behave as <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.Utility.html#Lucene_Net_Analysis_Cn_Smart_Utility_CompareArray_System_Char___System_Int32_System_Char___System_Int32_">CompareArray(Char[], Int32, Char[], Int32)</a>.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static int CompareArrayByPrefix(char[] shortArray, int shortIndex, char[] longArray, int longIndex)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">shortArray</span></td>
<td><p>prefix array</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">shortIndex</span></td>
<td><p>offset into <code data-dev-comment-type="paramref" class="paramref">shortArray</code></p>
</td>
</tr>
<tr>
<td><span class="xref">System.Char</span>[]</td>
<td><span class="parametername">longArray</span></td>
<td><p>long array (word)</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">longIndex</span></td>
<td><p>offset into <code data-dev-comment-type="paramref" class="paramref">longArray</code></p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><p>0 if <code data-dev-comment-type="paramref" class="paramref">shortArray</code> is a prefix of <code data-dev-comment-type="paramref" class="paramref">longArray</code>,
otherwise act as <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.Utility.html#Lucene_Net_Analysis_Cn_Smart_Utility_CompareArray_System_Char___System_Int32_System_Char___System_Int32_">CompareArray(Char[], Int32, Char[], Int32)</a>.</p>
</td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Analysis_Cn_Smart_Utility_GetCharType_" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.GetCharType*"></a>
<h4 id="Lucene_Net_Analysis_Cn_Smart_Utility_GetCharType_System_Char_" data-uid="Lucene.Net.Analysis.Cn.Smart.Utility.GetCharType(System.Char)">GetCharType(Char)</h4>
<div class="markdown level1 summary"><p>Return the internal <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.CharType.html">CharType</a> constant of a given character. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static CharType GetCharType(char ch)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Char</span></td>
<td><span class="parametername">ch</span></td>
<td><p>input character</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Analysis.Cn.Smart.CharType.html">CharType</a></td>
<td><p>Constant from <a class="xref" href="Lucene.Net.Analysis.Cn.Smart.CharType.html">CharType</a> describing the character type.</p>
</td>
</tr>
</tbody>
</table>
<h5 id="Lucene_Net_Analysis_Cn_Smart_Utility_GetCharType_System_Char__seealso">See Also</h5>
<div class="seealso">
<div><a class="xref" href="Lucene.Net.Analysis.Cn.Smart.CharType.html">CharType</a></div>
</div>
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