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StandardUnionFind (Compiler)
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com.google.javascript.jscomp.graph</FONT>
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Class StandardUnionFind&lt;E&gt;</H2>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>com.google.javascript.jscomp.graph.StandardUnionFind&lt;E&gt;</B>
</PRE>
<DL>
<DT><DT><B>Type Parameters:</B><DD><CODE>E</CODE> - element type</DL>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;E&gt;, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>StandardUnionFind&lt;E&gt;</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="http://java.sun.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A>, <A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;E&gt;</DL>
</PRE>
<P>
A Union-Find implementation.
<p>This class implements Union-Find algorithm with rank and path
compression.
<p>See <a
href="http://www.algorithmist.com/index.php?title=Union_Find&oldid=7575">
algorithmist</a> for more detail.
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../serialized-form.html#com.google.javascript.jscomp.graph.StandardUnionFind">Serialized Form</A></DL>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#StandardUnionFind()">StandardUnionFind</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates an empty UnionFind structure.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#StandardUnionFind(com.google.javascript.jscomp.graph.UnionFind)">StandardUnionFind</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;&nbsp;other)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates an UnionFind structure being a copy of other structure.</TD>
</TR>
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<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#add(E)">add</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;e)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds the given element to a new set if it is not already in a set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#allEquivalenceClasses()">allEquivalenceClasses</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an immutable collection containing all equivalence classes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#areEquivalent(E, E)">areEquivalent</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;a,
<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;b)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns true if <code>a</code> and <code>b</code> belong to the same equivalence
class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#elements()">elements</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an unmodifiable set of all elements added to the UnionFind.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#find(E)">find</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;e)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the representative of the equivalence class of <code>e</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#findAll(E)">findAll</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;value)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the elements in the same equivalence class as <code>value</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html#union(E, E)">union</A></B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;a,
<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;b)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unions the equivalence classes of <code>a</code> and <code>b</code> and returns the
representative of the resulting equivalence class.</TD>
</TR>
</TABLE>
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<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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&nbsp;
<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<A NAME="StandardUnionFind()"><!-- --></A><H3>
StandardUnionFind</H3>
<PRE>
public <B>StandardUnionFind</B>()</PRE>
<DL>
<DD>Creates an empty UnionFind structure.
<P>
</DL>
<HR>
<A NAME="StandardUnionFind(com.google.javascript.jscomp.graph.UnionFind)"><!-- --></A><H3>
StandardUnionFind</H3>
<PRE>
public <B>StandardUnionFind</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;&nbsp;other)</PRE>
<DL>
<DD>Creates an UnionFind structure being a copy of other structure.
The created structure is optimal in a sense that the paths to
the root from any element will have a length of at most 1.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - structure to be copied</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="add(java.lang.Object)"><!-- --></A><A NAME="add(E)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;e)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#add(E)">UnionFind</A></CODE></B></DD>
<DD>Adds the given element to a new set if it is not already in a set.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#add(E)">add</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="union(java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="union(E, E)"><!-- --></A><H3>
union</H3>
<PRE>
public <A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A> <B>union</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;a,
<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;b)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#union(E, E)">UnionFind</A></CODE></B></DD>
<DD>Unions the equivalence classes of <code>a</code> and <code>b</code> and returns the
representative of the resulting equivalence class. The elements will be
added if they are not already present.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#union(E, E)">union</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="find(java.lang.Object)"><!-- --></A><A NAME="find(E)"><!-- --></A><H3>
find</H3>
<PRE>
public <A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A> <B>find</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;e)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#find(E)">UnionFind</A></CODE></B></DD>
<DD>Returns the representative of the equivalence class of <code>e</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#find(E)">find</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="areEquivalent(java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="areEquivalent(E, E)"><!-- --></A><H3>
areEquivalent</H3>
<PRE>
public boolean <B>areEquivalent</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;a,
<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;b)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#areEquivalent(E, E)">UnionFind</A></CODE></B></DD>
<DD>Returns true if <code>a</code> and <code>b</code> belong to the same equivalence
class.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#areEquivalent(E, E)">areEquivalent</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="elements()"><!-- --></A><H3>
elements</H3>
<PRE>
public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt; <B>elements</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#elements()">UnionFind</A></CODE></B></DD>
<DD>Returns an unmodifiable set of all elements added to the UnionFind.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#elements()">elements</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="allEquivalenceClasses()"><!-- --></A><H3>
allEquivalenceClasses</H3>
<PRE>
public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;&gt; <B>allEquivalenceClasses</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#allEquivalenceClasses()">UnionFind</A></CODE></B></DD>
<DD>Returns an immutable collection containing all equivalence classes. The
returned collection represents a snapshot of the current state and will not
reflect changes made to the data structure.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#allEquivalenceClasses()">allEquivalenceClasses</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="findAll(java.lang.Object)"><!-- --></A><A NAME="findAll(E)"><!-- --></A><H3>
findAll</H3>
<PRE>
public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt; <B>findAll</B>(<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&nbsp;value)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#findAll(E)">UnionFind</A></CODE></B></DD>
<DD>Returns the elements in the same equivalence class as <code>value</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html#findAll(E)">findAll</A></CODE> in interface <CODE><A HREF="../../../../../com/google/javascript/jscomp/graph/UnionFind.html" title="interface in com.google.javascript.jscomp.graph">UnionFind</A>&lt;<A HREF="../../../../../com/google/javascript/jscomp/graph/StandardUnionFind.html" title="type parameter in StandardUnionFind">E</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an unmodifiable view. As equivalence classes are merged, this set
will reflect those changes.</DL>
</DD>
</DL>
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