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 <div class="subTitle">org.apache.calcite.util</div>
 <h2 title="类 BitSets" class="title">类 BitSets</h2>
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 <li><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">java.lang.Object</a></li>
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 <pre>public final class <span class="typeNameLabel">BitSets</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></pre>
 <div class="block">Utility functions for <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a>.</div>
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 <!-- ========== METHOD SUMMARY =========== -->
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 <h3>方法概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释">
 <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd">&nbsp;</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>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#closure-java.util.SortedMap-">closure</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&gt;&nbsp;equivalence)</code>
 <div class="block">Computes the closure of a map from integers to bits.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#contains-java.util.BitSet-java.util.BitSet-">contains</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set1)</code>
 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#contains-java.util.BitSet-org.apache.calcite.util.ImmutableBitSet-">contains</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
         <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set1)</code>
 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#of-org.apache.calcite.util.ImmutableIntList-">of</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a>&nbsp;bits)</code>
 <div class="block">Creates a BitSet with given bits set.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#of-int...-">of</a></span>(int...&nbsp;bits)</code>
 <div class="block">Creates a bitset with given bits set.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#of-java.lang.Integer:A-">of</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>[]&nbsp;bits)</code>
 <div class="block">Creates a BitSet with given bits set.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#of-java.lang.Iterable-">of</a></span>(<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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;bits)</code>
 <div class="block">Creates a BitSet with given bits set.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#populate-java.util.BitSet-org.apache.calcite.util.ImmutableIntList-">populate</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
         <a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a>&nbsp;list)</code>
 <div class="block">Populates a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a> from an
   <a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类"><code>ImmutableIntList</code></a>.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#populate-java.util.BitSet-java.lang.Iterable-">populate</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
         <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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;list)</code>
 <div class="block">Populates a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a> from an iterable, such as a list of integer.</div>
 </td>
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 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#previousClearBit-java.util.BitSet-int-">previousClearBit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
                 int&nbsp;fromIndex)</code>
 <div class="block">Returns the previous clear bit.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#range-int-">range</a></span>(int&nbsp;toIndex)</code>
 <div class="block">Creates a BitSet with bits between 0 and <code>toIndex</code> set.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#range-int-int-">range</a></span>(int&nbsp;fromIndex,
      int&nbsp;toIndex)</code>
 <div class="block">Creates a bitset with bits from <code>fromIndex</code> (inclusive) to
  specified <code>toIndex</code> (exclusive) set to <code>true</code>.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#setAll-java.util.BitSet-java.lang.Iterable-">setAll</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
       <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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;list)</code>
 <div class="block">Sets all bits in a given BitSet corresponding to integers from a list.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>static int[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#toArray-java.util.BitSet-">toArray</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</code>
 <div class="block">Converts a BitSet to an array.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>static <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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#toIter-java.util.BitSet-">toIter</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</code>
 <div class="block">Returns an iterable over the bits in a bitmap that are set to '1'.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>static <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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#toIter-org.apache.calcite.util.ImmutableBitSet-">toIter</a></span>(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;bitSet)</code>&nbsp;</td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#toList-java.util.BitSet-">toList</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</code>
 <div class="block">Converts a bitset to a list.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/BitSets.html#union-java.util.BitSet-java.util.BitSet...-">union</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
      <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>...&nbsp;sets)</code>
 <div class="block">Returns a BitSet that is the union of the given BitSets.</div>
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 <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>, <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>, <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#hashCode--" title="java.lang中的类或接口">hashCode</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#toString--" title="java.lang中的类或接口">toString</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>
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 <h3>方法详细资料</h3>
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 <h4>contains</h4>
 <pre>public static&nbsp;boolean&nbsp;contains(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
                                <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set1)</pre>
 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first. In other words, whether x is a super-set of y.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>set0</code> - Containing bitmap</dd>
 <dd><code>set1</code> - Bitmap to be checked</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Whether all bits in set1 are set in set0</dd>
 </dl>
 </li>
 </ul>
 <a name="contains-java.util.BitSet-org.apache.calcite.util.ImmutableBitSet-">
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 <h4>contains</h4>
 <pre>public static&nbsp;boolean&nbsp;contains(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
                                <a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;set1)</pre>
 <div class="block">Returns true if all bits set in the second parameter are also set in the
  first. In other words, whether x is a super-set of y.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>set0</code> - Containing bitmap</dd>
 <dd><code>set1</code> - Bitmap to be checked</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Whether all bits in set1 are set in set0</dd>
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 <pre>public static&nbsp;<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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;&nbsp;toIter(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</pre>
 <div class="block">Returns an iterable over the bits in a bitmap that are set to '1'.

  <p>This allows you to iterate over a bit set using a 'foreach' construct.
  For instance:

  <blockquote><code>
  BitSet bitSet;<br>
  for (int i : Util.toIter(bitSet)) {<br>
  &nbsp;&nbsp;print(i);<br>
  }</code></blockquote></div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bitSet</code> - Bit set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Iterable</dd>
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 <pre>public static&nbsp;<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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;&nbsp;toIter(<a href="../../../../org/apache/calcite/util/ImmutableBitSet.html" title="org.apache.calcite.util中的类">ImmutableBitSet</a>&nbsp;bitSet)</pre>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>&gt;&nbsp;toList(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</pre>
 <div class="block">Converts a bitset to a list.

  <p>The list is mutable, and future changes to the list do not affect the
  contents of the bit set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bitSet</code> - Bit set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>List of set bits</dd>
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 <pre>public static&nbsp;int[]&nbsp;toArray(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet)</pre>
 <div class="block">Converts a BitSet to an array.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bitSet</code> - Bit set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Array of set bits</dd>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;of(int...&nbsp;bits)</pre>
 <div class="block">Creates a bitset with given bits set.

  <p>For example, <code>of(0, 3)</code> returns a bit set with bits {0, 3}
  set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bits</code> - Array of bits to set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;of(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>[]&nbsp;bits)</pre>
 <div class="block">Creates a BitSet with given bits set.

  <p>For example, <code>of(new Integer[] {0, 3})</code> returns a bit set
  with bits {0, 3} set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bits</code> - Array of bits to set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;of(<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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;bits)</pre>
 <div class="block">Creates a BitSet with given bits set.

  <p>For example, <code>of(Arrays.asList(0, 3)) </code> returns a bit set
  with bits {0, 3} set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bits</code> - Collection of bits to set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
 </dl>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;of(<a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a>&nbsp;bits)</pre>
 <div class="block">Creates a BitSet with given bits set.

  <p>For example, <code>of(ImmutableIntList.of(0, 3))</code> returns a bit set
  with bits {0, 3} set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>bits</code> - Collection of bits to set</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;range(int&nbsp;fromIndex,
                            int&nbsp;toIndex)</pre>
 <div class="block">Creates a bitset with bits from <code>fromIndex</code> (inclusive) to
  specified <code>toIndex</code> (exclusive) set to <code>true</code>.

  <p>For example, <code>range(0, 3)</code> returns a bit set with bits
  {0, 1, 2} set.</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>fromIndex</code> - Index of the first bit to be set.</dd>
 <dd><code>toIndex</code> - Index after the last bit to be set.</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>Bit set</dd>
 </dl>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;range(int&nbsp;toIndex)</pre>
 <div class="block">Creates a BitSet with bits between 0 and <code>toIndex</code> set.</div>
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 <pre>public static&nbsp;void&nbsp;setAll(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
                           <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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;list)</pre>
 <div class="block">Sets all bits in a given BitSet corresponding to integers from a list.</div>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;union(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;set0,
                            <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>...&nbsp;sets)</pre>
 <div class="block">Returns a BitSet that is the union of the given BitSets. Does not modify
  any of the inputs.</div>
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 <pre>public static&nbsp;int&nbsp;previousClearBit(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
                                    int&nbsp;fromIndex)</pre>
 <div class="block">Returns the previous clear bit.

  <p>Has same behavior as <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true#previousClearBit-int-" title="java.util中的类或接口"><code>BitSet.previousClearBit(int)</code></a>, but that method
  does not exist before 1.7.</div>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&gt;&nbsp;closure(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/SortedMap.html?is-external=true" title="java.util中的类或接口">SortedMap</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&gt;&nbsp;equivalence)</pre>
 <div class="block">Computes the closure of a map from integers to bits.

  <p>The input must have an entry for each position.

  <p>Does not modify the input map or its bit sets.</div>
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 <pre>public static&nbsp;void&nbsp;populate(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
                             <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>&lt;? extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="java.lang中的类或接口">Number</a>&gt;&nbsp;list)</pre>
 <div class="block">Populates a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a> from an iterable, such as a list of integer.</div>
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 <pre>public static&nbsp;void&nbsp;populate(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口">BitSet</a>&nbsp;bitSet,
                             <a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类">ImmutableIntList</a>&nbsp;list)</pre>
 <div class="block">Populates a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="java.util中的类或接口"><code>BitSet</code></a> from an
   <a href="../../../../org/apache/calcite/util/ImmutableIntList.html" title="org.apache.calcite.util中的类"><code>ImmutableIntList</code></a>.</div>
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