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| <h2 title="类 Permutation" class="title">类 Permutation</h2> |
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| <ul class="inheritance"> |
| <li>org.apache.calcite.util.Permutation</li> |
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| <dt>所有已实现的接口:</dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a><<a href="../../../../org/apache/calcite/util/mapping/IntPair.html" title="org.apache.calcite.util.mapping中的类">IntPair</a>>, <a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a>, <a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.CoreMapping</a>, <a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a>, <a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a>, <a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></dd> |
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| <pre>public class <span class="typeNameLabel">Permutation</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a> |
| implements <a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a>, <a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></pre> |
| <div class="block">Represents a mapping which reorders elements in an array.</div> |
| </li> |
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| <h3>构造器概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="构造器概要表, 列表构造器和解释"> |
| <caption><span>构造器</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">构造器和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#Permutation-int-">Permutation</a></span>(int size)</code> |
| <div class="block">Creates a permutation of a given size.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#Permutation-int:A-">Permutation</a></span>(int[] targets)</code> |
| <div class="block">Creates a permutation from an array.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <h3>方法概要</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">方法和说明</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#clear--">clear</a></span>()</code> |
| <div class="block">Removes all elements in the mapping.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#clone--">clone</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a> obj)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/mapping/MappingType.html" title="org.apache.calcite.util.mapping中的枚举">MappingType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getMappingType--">getMappingType</a></span>()</code> |
| <div class="block">Returns the mapping type.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getSource-int-">getSource</a></span>(int target)</code> |
| <div class="block">Returns the position which maps to <code>target</code>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getSourceCount--">getSourceCount</a></span>()</code> |
| <div class="block">Returns the number of sources.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getSourceOpt-int-">getSourceOpt</a></span>(int target)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getTarget-int-">getTarget</a></span>(int source)</code> |
| <div class="block">Returns the position that <code>source</code> is mapped to.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getTargetCount--">getTargetCount</a></span>()</code> |
| <div class="block">Returns the number of targets.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#getTargetOpt-int-">getTargetOpt</a></span>(int source)</code> |
| <div class="block">Returns the target that a source maps to, or -1 if it is not mapped.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#hashCode--">hashCode</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#identity--">identity</a></span>()</code> |
| <div class="block">Initializes this permutation to the identity permutation.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#insertSource-int-">insertSource</a></span>(int x)</code> |
| <div class="block">Inserts into the sources.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#insertTarget-int-">insertTarget</a></span>(int x)</code> |
| <div class="block">Inserts into the targets.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#inverse--">inverse</a></span>()</code> |
| <div class="block">Returns the inverse permutation.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#isIdentity--">isIdentity</a></span>()</code> |
| <div class="block">Returns whether this is the identity permutation.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="java.util中的类或接口">Iterator</a><<a href="../../../../org/apache/calcite/util/mapping/IntPair.html" title="org.apache.calcite.util.mapping中的类">IntPair</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#iterator--">iterator</a></span>()</code> |
| <div class="block">Returns an iterator over the elements in this mapping.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#product-org.apache.calcite.util.Permutation-">product</a></span>(<a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a> permutation)</code> |
| <div class="block">Returns the product of this Permutation with a given Permutation.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#set-int-int-">set</a></span>(int source, |
| int target)</code> |
| <div class="block">Maps source position to target position.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#set-int-int-boolean-">set</a></span>(int source, |
| int target, |
| boolean allowResize)</code> |
| <div class="block">Maps source position to target position, automatically resizing if source |
| or target is out of bounds.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#setAll-org.apache.calcite.util.mapping.Mapping-">setAll</a></span>(<a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a> mapping)</code> </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#size--">size</a></span>()</code> |
| <div class="block">Returns the number of elements in this permutation.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/Permutation.html#toString--">toString</a></span>()</code> |
| <div class="block">Returns a string representation of this permutation.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
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| <h3>从类继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li> |
| </ul> |
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| <h3>从接口继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="java.lang中的类或接口">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="java.lang中的类或接口">spliterator</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>构造器详细资料</h3> |
| <a name="Permutation-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>Permutation</h4> |
| <pre>public Permutation(int size)</pre> |
| <div class="block">Creates a permutation of a given size. |
| |
| <p>It is initialized to the identity permutation, such as "[0, 1, 2, 3]".</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>size</code> - Number of elements in the permutation</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="Permutation-int:A-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>Permutation</h4> |
| <pre>public Permutation(int[] targets)</pre> |
| <div class="block">Creates a permutation from an array.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>targets</code> - Array of targets</dd> |
| <dt><span class="throwsLabel">抛出:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="java.lang中的类或接口">IllegalArgumentException</a></code> - if elements of array are not unique</dd> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">ArrayIndexOutOfBoundsException</a></code> - if elements of array are not |
| between 0 through targets.length - 1 |
| inclusive</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <h3>方法详细资料</h3> |
| <a name="clone--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>clone</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a> clone()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a></code> 在类中 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="identity--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>identity</h4> |
| <pre>public void identity()</pre> |
| <div class="block">Initializes this permutation to the identity permutation.</div> |
| </li> |
| </ul> |
| <a name="size--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>size</h4> |
| <pre>public final int size()</pre> |
| <div class="block">Returns the number of elements in this permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#size--">size</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html#size--">size</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.CoreMapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="clear--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>clear</h4> |
| <pre>public void clear()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#clear--">Mapping</a></code></span></div> |
| <div class="block">Removes all elements in the mapping.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#clear--">clear</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toString--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>toString</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> toString()</pre> |
| <div class="block">Returns a string representation of this permutation. |
| |
| <p>For example, the mapping |
| |
| <table> |
| <caption>Example mapping</caption> |
| <tr> |
| <th>source</th> |
| <th>target</th> |
| </tr> |
| <tr> |
| <td>0</td> |
| <td>2</td> |
| </tr> |
| <tr> |
| <td>1</td> |
| <td>0</td> |
| </tr> |
| <tr> |
| <td>2</td> |
| <td>1</td> |
| </tr> |
| <tr> |
| <td>3</td> |
| <td>3</td> |
| </tr> |
| </table> |
| |
| <p>is represented by the string "[2, 0, 1, 3]".</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a></code> 在类中 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></code></dd> |
| </dl> |
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| </ul> |
| <a name="set-int-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>set</h4> |
| <pre>public void set(int source, |
| int target)</pre> |
| <div class="block">Maps source position to target position. |
| |
| <p>To preserve the 1:1 nature of the permutation, the previous target of |
| source becomes the new target of the previous source. |
| |
| <p>For example, given the permutation |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 1. Position 2 currently has target |
| 0, and the source of position 1 is position 3. We preserve the permutation |
| property by mapping the previous source 3 to the previous target 0. The new |
| permutation is |
| |
| <blockquote><pre>[3, 2, 1, 0].</pre></blockquote> |
| |
| <p>Another example. Again starting from |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 3. We map the previous source 0 to |
| the previous target 0, which gives |
| |
| <blockquote><pre>[0, 2, 3, 1].</pre></blockquote></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#set-int-int-">set</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>source</code> - Source position</dd> |
| <dd><code>target</code> - Target position</dd> |
| <dt><span class="throwsLabel">抛出:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">ArrayIndexOutOfBoundsException</a></code> - if source or target is negative or |
| greater than or equal to the size of |
| the permuation</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="set-int-int-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>set</h4> |
| <pre>public void set(int source, |
| int target, |
| boolean allowResize)</pre> |
| <div class="block">Maps source position to target position, automatically resizing if source |
| or target is out of bounds. |
| |
| <p>To preserve the 1:1 nature of the permutation, the previous target of |
| source becomes the new target of the previous source. |
| |
| <p>For example, given the permutation |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 1. Position 2 currently has target |
| 0, and the source of position 1 is position 3. We preserve the permutation |
| property by mapping the previous source 3 to the previous target 0. The new |
| permutation is |
| |
| <blockquote><pre>[3, 2, 1, 0].</pre></blockquote> |
| |
| <p>Another example. Again starting from |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 3. We map the previous source 0 to |
| the previous target 0, which gives |
| |
| <blockquote><pre>[0, 2, 3, 1].</pre></blockquote></div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>source</code> - Source position</dd> |
| <dd><code>target</code> - Target position</dd> |
| <dd><code>allowResize</code> - Whether to resize the permutation if the source or |
| target is greater than the current capacity</dd> |
| <dt><span class="throwsLabel">抛出:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="java.lang中的类或接口">ArrayIndexOutOfBoundsException</a></code> - if source or target is negative, |
| or greater than or equal to the size |
| of the permutation, and |
| <code>allowResize</code> is false</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="insertTarget-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>insertTarget</h4> |
| <pre>public void insertTarget(int x)</pre> |
| <div class="block">Inserts into the targets. |
| |
| <p>For example, consider the permutation</p> |
| |
| <table border="1"> |
| <caption>Example permutation</caption> |
| <tr> |
| <td>source</td> |
| <td>0</td> |
| <td>1</td> |
| <td>2</td> |
| <td>3</td> |
| <td>4</td> |
| </tr> |
| <tr> |
| <td>target</td> |
| <td>3</td> |
| <td>0</td> |
| <td>4</td> |
| <td>2</td> |
| <td>1</td> |
| </tr> |
| </table> |
| |
| <p>After applying <code>insertTarget(2)</code> every target 2 or higher is |
| shifted up one.</p> |
| |
| <table border="1"> |
| <caption>Mapping after applying insertTarget(2)</caption> |
| <tr> |
| <td>source</td> |
| <td>0</td> |
| <td>1</td> |
| <td>2</td> |
| <td>3</td> |
| <td>4</td> |
| <td>5</td> |
| </tr> |
| <tr> |
| <td>target</td> |
| <td>4</td> |
| <td>0</td> |
| <td>5</td> |
| <td>3</td> |
| <td>1</td> |
| <td>2</td> |
| </tr> |
| </table> |
| |
| <p>Note that the array has been extended to accommodate the new target, and |
| the previously unmapped source 5 is mapped to the unused target slot 2.</p></div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>x</code> - Ordinal of position to add to target</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="insertSource-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>insertSource</h4> |
| <pre>public void insertSource(int x)</pre> |
| <div class="block">Inserts into the sources. |
| |
| <p>Behavior is analogous to <a href="../../../../org/apache/calcite/util/Permutation.html#insertTarget-int-"><code>insertTarget(int)</code></a>.</p></div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>x</code> - Ordinal of position to add to source</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="inverse--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>inverse</h4> |
| <pre>public <a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a> inverse()</pre> |
| <div class="block">Returns the inverse permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#inverse--">inverse</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#inverse--">inverse</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isIdentity--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isIdentity</h4> |
| <pre>public boolean isIdentity()</pre> |
| <div class="block">Returns whether this is the identity permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#isIdentity--">isIdentity</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#isIdentity--">isIdentity</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
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| <a name="getTarget-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTarget</h4> |
| <pre>public int getTarget(int source)</pre> |
| <div class="block">Returns the position that <code>source</code> is mapped to.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html#getTarget-int-">getTarget</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#getTarget-int-">getTarget</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>source</code> - source</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>target</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getSource-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSource</h4> |
| <pre>public int getSource(int target)</pre> |
| <div class="block">Returns the position which maps to <code>target</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getSource-int-">getSource</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| </dl> |
| </li> |
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| <a name="hashCode--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hashCode</h4> |
| <pre>public int hashCode()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a></code> 在类中 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></code></dd> |
| </dl> |
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| <a name="equals-java.lang.Object-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>equals</h4> |
| <pre>public boolean equals(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a> obj)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a></code> 在类中 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></code></dd> |
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| </li> |
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| <a name="iterator--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>iterator</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="java.util中的类或接口">Iterator</a><<a href="../../../../org/apache/calcite/util/mapping/IntPair.html" title="org.apache.calcite.util.mapping中的类">IntPair</a>> iterator()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#iterator--">Mapping</a></code></span></div> |
| <div class="block">Returns an iterator over the elements in this mapping. |
| |
| <p>This method is optional; implementations may throw |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="java.lang中的类或接口"><code>UnsupportedOperationException</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="java.lang中的类或接口">iterator</a></code> 在接口中 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a><<a href="../../../../org/apache/calcite/util/mapping/IntPair.html" title="org.apache.calcite.util.mapping中的类">IntPair</a>></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#iterator--">iterator</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getSourceCount--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSourceCount</h4> |
| <pre>public int getSourceCount()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#getSourceCount--">Mapping</a></code></span></div> |
| <div class="block">Returns the number of sources. Valid sources will be in the range 0 .. |
| sourceCount.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#getSourceCount--">getSourceCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html#getSourceCount--">getSourceCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getSourceCount--">getSourceCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#getSourceCount--">getSourceCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
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| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTargetCount</h4> |
| <pre>public int getTargetCount()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#getTargetCount--">Mapping</a></code></span></div> |
| <div class="block">Returns the number of targets. Valid targets will be in the range 0 .. |
| targetCount.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#getTargetCount--">getTargetCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getTargetCount--">getTargetCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#getTargetCount--">getTargetCount</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| </dl> |
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| <a name="getMappingType--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getMappingType</h4> |
| <pre>public <a href="../../../../org/apache/calcite/util/mapping/MappingType.html" title="org.apache.calcite.util.mapping中的枚举">MappingType</a> getMappingType()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html#getMappingType--">Mappings.CoreMapping</a></code></span></div> |
| <div class="block">Returns the mapping type.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html#getMappingType--">getMappingType</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html#getMappingType--">getMappingType</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.CoreMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html#getMappingType--">getMappingType</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getMappingType--">getMappingType</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Mapping type</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTargetOpt-int-"> |
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| </a> |
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| <h4>getTargetOpt</h4> |
| <pre>public int getTargetOpt(int source)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html#getTargetOpt-int-">Mappings.FunctionMapping</a></code></span></div> |
| <div class="block">Returns the target that a source maps to, or -1 if it is not mapped.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html#getTargetOpt-int-">getTargetOpt</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getTargetOpt-int-">getTargetOpt</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#getTargetOpt-int-">getTargetOpt</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getSourceOpt-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getSourceOpt</h4> |
| <pre>public int getSourceOpt(int target)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html#getSourceOpt-int-">getSourceOpt</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html#getSourceOpt-int-">getSourceOpt</a></code> 在接口中 <code><a href="../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setAll-org.apache.calcite.util.mapping.Mapping-"> |
| <!-- --> |
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| <h4>setAll</h4> |
| <pre>public void setAll(<a href="../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a> mapping)</pre> |
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| <h4>product</h4> |
| <pre>public <a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a> product(<a href="../../../../org/apache/calcite/util/Permutation.html" title="org.apache.calcite.util中的类">Permutation</a> permutation)</pre> |
| <div class="block">Returns the product of this Permutation with a given Permutation. Does |
| not modify this Permutation or <code>permutation</code>. |
| |
| <p>For example, perm.product(perm.inverse()) yields the identity.</div> |
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