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BitMatrix (Colt 1.2.0 - API Specification)
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cern.colt.bitvector</FONT>
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Class BitMatrix</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../cern/colt/PersistentObject.html" title="class in cern.colt">cern.colt.PersistentObject</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>cern.colt.bitvector.BitMatrix</B>
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<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Cloneable.html" title="class or interface in java.lang">Cloneable</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD>
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<DT>public class <B>BitMatrix</B><DT>extends <A HREF="../../../cern/colt/PersistentObject.html" title="class in cern.colt">PersistentObject</A></DL>
<P>
Fixed sized (non resizable) n*m bit matrix.
A bit matrix has a number of columns and rows, which are assigned upon instance construction - The matrix's size is then <tt>columns()*rows()</tt>.
Bits are accessed via <tt>(column,row)</tt> coordinates.
<p>
Individual bits can be examined, set, or cleared.
Rectangular parts (boxes) can quickly be extracted, copied and replaced.
Quick iteration over boxes is provided by optimized internal iterators (<tt>forEach()</tt> methods).
One <code>BitMatrix</code> may be used to modify the contents of another
<code>BitMatrix</code> through logical AND, OR, XOR and other similar operations.
<p>
Legal coordinates range from <tt>[0,0]</tt> to <tt>[columns()-1,rows()-1]</tt>.
Any attempt to access a bit at a coordinate <tt>column<0 || column>=columns() || row<0 || row>=rows()</tt> will throw an <tt>IndexOutOfBoundsException</tt>.
Operations involving two bit matrices (like AND, OR, XOR, etc.) will throw an <tt>IllegalArgumentException</tt> if both bit matrices do not have the same number of columns and rows.
<p>
If you need extremely quick access to individual bits: Although getting and setting individual bits with methods <tt>get(...)</tt> and <tt>put(...)</tt> is quick, it is even quicker (<b>but not safe</b>) to use <tt>getQuick(...)</tt> and <tt>putQuick(...)</tt>.
<p>
<b>Note</b> that this implementation is not synchronized.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>1.0, 09/24/99</DD>
<DT><B>See Also:</B><DD><A HREF="../../../cern/colt/bitvector/BitVector.html" title="class in cern.colt.bitvector"><CODE>BitVector</CODE></A>,
<A HREF="../../../cern/colt/bitvector/QuickBitVector.html" title="class in cern.colt.bitvector"><CODE>QuickBitVector</CODE></A>,
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/BitSet.html" title="class or interface in java.util"><CODE>BitSet</CODE></A>,
<A HREF="../../../serialized-form.html#cern.colt.bitvector.BitMatrix">Serialized Form</A></DL>
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<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#BitMatrix(int, int)">BitMatrix</A></B>(int columns,
int rows)</CODE>
<BR>
Constructs a bit matrix with a given number of columns and rows.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#and(cern.colt.bitvector.BitMatrix)">and</A></B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</CODE>
<BR>
Performs a logical <b>AND</b> of the receiver with another bit matrix.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#andNot(cern.colt.bitvector.BitMatrix)">andNot</A></B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</CODE>
<BR>
Clears all of the bits in receiver whose corresponding
bit is set in the other bit matrix.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#cardinality()">cardinality</A></B>()</CODE>
<BR>
Returns the number of bits currently in the <tt>true</tt> state.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#clear()">clear</A></B>()</CODE>
<BR>
Clears all bits of the receiver.</TD>
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<CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#clone()">clone</A></B>()</CODE>
<BR>
Cloning this <code>BitMatrix</code> produces a new <code>BitMatrix</code>
that is equal to it.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#columns()">columns</A></B>()</CODE>
<BR>
Returns the number of columns of the receiver.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#copy()">copy</A></B>()</CODE>
<BR>
Returns a shallow clone of the receiver; calls <code>clone()</code> and casts the result.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#equals(java.lang.Object)">equals</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</CODE>
<BR>
Compares this object against the specified object.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#forEachCoordinateInState(boolean, cern.colt.function.IntIntProcedure)">forEachCoordinateInState</A></B>(boolean state,
<A HREF="../../../cern/colt/function/IntIntProcedure.html" title="interface in cern.colt.function">IntIntProcedure</A> procedure)</CODE>
<BR>
Applies a procedure to each coordinate that holds a bit in the given state.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#get(int, int)">get</A></B>(int column,
int row)</CODE>
<BR>
Returns from the receiver the value of the bit at the specified coordinate.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#getQuick(int, int)">getQuick</A></B>(int column,
int row)</CODE>
<BR>
Returns from the receiver the value of the bit at the specified coordinate; <b>WARNING:</b> Does not check preconditions.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#hashCode()">hashCode</A></B>()</CODE>
<BR>
Returns a hash code value for the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#not()">not</A></B>()</CODE>
<BR>
Performs a logical <b>NOT</b> on the bits of the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#or(cern.colt.bitvector.BitMatrix)">or</A></B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</CODE>
<BR>
Performs a logical <b>OR</b> of the receiver with another bit matrix.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#part(int, int, int, int)">part</A></B>(int column,
int row,
int width,
int height)</CODE>
<BR>
Constructs and returns a new matrix with <tt>width</tt> columns and <tt>height</tt> rows which is a copy of the contents of the given box.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#put(int, int, boolean)">put</A></B>(int column,
int row,
boolean value)</CODE>
<BR>
Sets the bit at the specified coordinate to the state specified by <tt>value</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#putQuick(int, int, boolean)">putQuick</A></B>(int column,
int row,
boolean value)</CODE>
<BR>
Sets the bit at the specified coordinate to the state specified by <tt>value</tt>; <b>WARNING:</b> Does not check preconditions.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#replaceBoxWith(int, int, int, int, cern.colt.bitvector.BitMatrix, int, int)">replaceBoxWith</A></B>(int column,
int row,
int width,
int height,
<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> source,
int sourceColumn,
int sourceRow)</CODE>
<BR>
Replaces a box of the receiver with the contents of another matrix's box.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#replaceBoxWith(int, int, int, int, boolean)">replaceBoxWith</A></B>(int column,
int row,
int width,
int height,
boolean value)</CODE>
<BR>
Sets the bits in the given box to the state specified by <tt>value</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#rows()">rows</A></B>()</CODE>
<BR>
Returns the number of rows of the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#size()">size</A></B>()</CODE>
<BR>
Returns the size of the receiver which is <tt>columns()*rows()</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/bitvector/BitVector.html" title="class in cern.colt.bitvector">BitVector</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#toBitVector()">toBitVector</A></B>()</CODE>
<BR>
Converts the receiver to a bitvector.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#toString()">toString</A></B>()</CODE>
<BR>
Returns a (very crude) string representation of the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/bitvector/BitMatrix.html#xor(cern.colt.bitvector.BitMatrix)">xor</A></B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</CODE>
<BR>
Performs a logical <b>XOR</b> of the receiver with another bit matrix.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="BitMatrix(int, int)"><!-- --></A><H3>
BitMatrix</H3>
<PRE>
public <B>BitMatrix</B>(int columns,
int rows)</PRE>
<DL>
<DD>Constructs a bit matrix with a given number of columns and rows. All bits are initially <tt>false</tt>.
<P>
<DT><B>Parameters:</B><DD><CODE>columns</CODE> - the number of columns the matrix shall have.<DD><CODE>rows</CODE> - the number of rows the matrix shall have.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>columns < 0 || rows < 0</tt>.</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="and(cern.colt.bitvector.BitMatrix)"><!-- --></A><H3>
and</H3>
<PRE>
public void <B>and</B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</PRE>
<DL>
<DD>Performs a logical <b>AND</b> of the receiver with another bit matrix.
The receiver is modified so that a bit in it has the
value <code>true</code> if and only if it already had the
value <code>true</code> and the corresponding bit in the other bit matrix
argument has the value <code>true</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - a bit matrix.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>columns() != other.columns() || rows() != other.rows()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="andNot(cern.colt.bitvector.BitMatrix)"><!-- --></A><H3>
andNot</H3>
<PRE>
public void <B>andNot</B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</PRE>
<DL>
<DD>Clears all of the bits in receiver whose corresponding
bit is set in the other bit matrix.
In other words, determines the difference (A\B) between two bit matrices.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - a bit matrix with which to mask the receiver.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>columns() != other.columns() || rows() != other.rows()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="cardinality()"><!-- --></A><H3>
cardinality</H3>
<PRE>
public int <B>cardinality</B>()</PRE>
<DL>
<DD>Returns the number of bits currently in the <tt>true</tt> state.
Optimized for speed. Particularly quick if the receiver is either sparse or dense.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="clear()"><!-- --></A><H3>
clear</H3>
<PRE>
public void <B>clear</B>()</PRE>
<DL>
<DD>Clears all bits of the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>clone</B>()</PRE>
<DL>
<DD>Cloning this <code>BitMatrix</code> produces a new <code>BitMatrix</code>
that is equal to it.
The clone of the bit matrix is another bit matrix that has exactly the
same bits set to <code>true</code> as this bit matrix and the same
number of columns and rows.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../cern/colt/PersistentObject.html#clone()">clone</A></CODE> in class <CODE><A HREF="../../../cern/colt/PersistentObject.html" title="class in cern.colt">PersistentObject</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a clone of this bit matrix.</DL>
</DD>
</DL>
<HR>
<A NAME="columns()"><!-- --></A><H3>
columns</H3>
<PRE>
public int <B>columns</B>()</PRE>
<DL>
<DD>Returns the number of columns of the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="copy()"><!-- --></A><H3>
copy</H3>
<PRE>
public <A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> <B>copy</B>()</PRE>
<DL>
<DD>Returns a shallow clone of the receiver; calls <code>clone()</code> and casts the result.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a shallow clone of the receiver.</DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</PRE>
<DL>
<DD>Compares this object against the specified object.
The result is <code>true</code> if and only if the argument is
not <code>null</code> and is a <code>BitMatrix</code> object
that has the same number of columns and rows as the receiver and
that has exactly the same bits set to <code>true</code> as the receiver.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - the object to compare with.
<DT><B>Returns:</B><DD><code>true</code> if the objects are the same;
<code>false</code> otherwise.</DL>
</DD>
</DL>
<HR>
<A NAME="forEachCoordinateInState(boolean, cern.colt.function.IntIntProcedure)"><!-- --></A><H3>
forEachCoordinateInState</H3>
<PRE>
public boolean <B>forEachCoordinateInState</B>(boolean state,
<A HREF="../../../cern/colt/function/IntIntProcedure.html" title="interface in cern.colt.function">IntIntProcedure</A> procedure)</PRE>
<DL>
<DD>Applies a procedure to each coordinate that holds a bit in the given state.
Iterates rowwise downwards from [columns()-1,rows()-1] to [0,0].
Useful, for example, if you want to copy bits into an image or somewhere else.
Optimized for speed. Particularly quick if one of the following conditions holds
<ul>
<li><tt>state==true</tt> and the receiver is sparse (<tt>cardinality()</tt> is small compared to <tt>size()</tt>).
<li><tt>state==false</tt> and the receiver is dense (<tt>cardinality()</tt> is large compared to <tt>size()</tt>).
</ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>state</CODE> - element to search for.<DD><CODE>procedure</CODE> - a procedure object taking as first argument the current column and as second argument the current row. Stops iteration if the procedure returns <tt>false</tt>, otherwise continues.
<DT><B>Returns:</B><DD><tt>false</tt> if the procedure stopped before all elements where iterated over, <tt>true</tt> otherwise.</DL>
</DD>
</DL>
<HR>
<A NAME="get(int, int)"><!-- --></A><H3>
get</H3>
<PRE>
public boolean <B>get</B>(int column,
int row)</PRE>
<DL>
<DD>Returns from the receiver the value of the bit at the specified coordinate.
The value is <tt>true</tt> if this bit is currently set; otherwise, returns <tt>false</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.
<DT><B>Returns:</B><DD>the value of the bit at the specified coordinate.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>column<0 || column>=columns() || row<0 || row>=rows()</tt></DL>
</DD>
</DL>
<HR>
<A NAME="getQuick(int, int)"><!-- --></A><H3>
getQuick</H3>
<PRE>
public boolean <B>getQuick</B>(int column,
int row)</PRE>
<DL>
<DD>Returns from the receiver the value of the bit at the specified coordinate; <b>WARNING:</b> Does not check preconditions.
The value is <tt>true</tt> if this bit is currently set; otherwise, returns <tt>false</tt>.
<p>Provided with invalid parameters this method may return invalid values without throwing any exception.
<b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
Precondition (unchecked): <tt>column>=0 && column<columns() && row>=0 && row<rows()</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.
<DT><B>Returns:</B><DD>the value of the bit at the specified coordinate.</DL>
</DD>
</DL>
<HR>
<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Returns a hash code value for the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="not()"><!-- --></A><H3>
not</H3>
<PRE>
public void <B>not</B>()</PRE>
<DL>
<DD>Performs a logical <b>NOT</b> on the bits of the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="or(cern.colt.bitvector.BitMatrix)"><!-- --></A><H3>
or</H3>
<PRE>
public void <B>or</B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</PRE>
<DL>
<DD>Performs a logical <b>OR</b> of the receiver with another bit matrix.
The receiver is modified so that a bit in it has the
value <code>true</code> if and only if it either already had the
value <code>true</code> or the corresponding bit in the other bit matrix
argument has the value <code>true</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - a bit matrix.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>columns() != other.columns() || rows() != other.rows()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="part(int, int, int, int)"><!-- --></A><H3>
part</H3>
<PRE>
public <A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> <B>part</B>(int column,
int row,
int width,
int height)</PRE>
<DL>
<DD>Constructs and returns a new matrix with <tt>width</tt> columns and <tt>height</tt> rows which is a copy of the contents of the given box.
The box ranges from <tt>[column,row]</tt> to <tt>[column+width-1,row+height-1]</tt>, all inclusive.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.<DD><CODE>width</CODE> - the width of the box.<DD><CODE>height</CODE> - the height of the box.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>column<0 || column+width>columns() || row<0 || row+height>rows()</tt></DL>
</DD>
</DL>
<HR>
<A NAME="put(int, int, boolean)"><!-- --></A><H3>
put</H3>
<PRE>
public void <B>put</B>(int column,
int row,
boolean value)</PRE>
<DL>
<DD>Sets the bit at the specified coordinate to the state specified by <tt>value</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.<DD><CODE>value</CODE> - the value of the bit to be copied into the specified coordinate.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>column<0 || column>=columns() || row<0 || row>=rows()</tt></DL>
</DD>
</DL>
<HR>
<A NAME="putQuick(int, int, boolean)"><!-- --></A><H3>
putQuick</H3>
<PRE>
public void <B>putQuick</B>(int column,
int row,
boolean value)</PRE>
<DL>
<DD>Sets the bit at the specified coordinate to the state specified by <tt>value</tt>; <b>WARNING:</b> Does not check preconditions.
<p>Provided with invalid parameters this method may return invalid values without throwing any exception.
<b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
Precondition (unchecked): <tt>column>=0 && column<columns() && row>=0 && row<rows()</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.<DD><CODE>value</CODE> - the value of the bit to be copied into the specified coordinate.</DL>
</DD>
</DL>
<HR>
<A NAME="replaceBoxWith(int, int, int, int, cern.colt.bitvector.BitMatrix, int, int)"><!-- --></A><H3>
replaceBoxWith</H3>
<PRE>
public void <B>replaceBoxWith</B>(int column,
int row,
int width,
int height,
<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> source,
int sourceColumn,
int sourceRow)</PRE>
<DL>
<DD>Replaces a box of the receiver with the contents of another matrix's box.
The source box ranges from <tt>[sourceColumn,sourceRow]</tt> to <tt>[sourceColumn+width-1,sourceRow+height-1]</tt>, all inclusive.
The destination box ranges from <tt>[column,row]</tt> to <tt>[column+width-1,row+height-1]</tt>, all inclusive.
Does nothing if <tt>width <= 0 || height <= 0</tt>.
If <tt>source==this</tt> and the source and destination box intersect in an ambiguous way, then replaces as if using an intermediate auxiliary copy of the receiver.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.<DD><CODE>width</CODE> - the width of the box.<DD><CODE>height</CODE> - the height of the box.<DD><CODE>source</CODE> - the source matrix to copy from(may be identical to the receiver).<DD><CODE>sourceColumn</CODE> - the index of the source column-coordinate.<DD><CODE>sourceRow</CODE> - the index of the source row-coordinate.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>column<0 || column+width>columns() || row<0 || row+height>rows()</tt>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>sourceColumn<0 || sourceColumn+width>source.columns() || sourceRow<0 || sourceRow+height>source.rows()</tt></DL>
</DD>
</DL>
<HR>
<A NAME="replaceBoxWith(int, int, int, int, boolean)"><!-- --></A><H3>
replaceBoxWith</H3>
<PRE>
public void <B>replaceBoxWith</B>(int column,
int row,
int width,
int height,
boolean value)</PRE>
<DL>
<DD>Sets the bits in the given box to the state specified by <tt>value</tt>.
The box ranges from <tt>[column,row]</tt> to <tt>[column+width-1,row+height-1]</tt>, all inclusive.
(Does nothing if <tt>width <= 0 || height <= 0</tt>).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>column</CODE> - the index of the column-coordinate.<DD><CODE>row</CODE> - the index of the row-coordinate.<DD><CODE>width</CODE> - the width of the box.<DD><CODE>height</CODE> - the height of the box.<DD><CODE>value</CODE> - the value of the bit to be copied into the bits of the specified box.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>column<0 || column+width>columns() || row<0 || row+height>rows()</tt></DL>
</DD>
</DL>
<HR>
<A NAME="rows()"><!-- --></A><H3>
rows</H3>
<PRE>
public int <B>rows</B>()</PRE>
<DL>
<DD>Returns the number of rows of the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public int <B>size</B>()</PRE>
<DL>
<DD>Returns the size of the receiver which is <tt>columns()*rows()</tt>.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="toBitVector()"><!-- --></A><H3>
toBitVector</H3>
<PRE>
public <A HREF="../../../cern/colt/bitvector/BitVector.html" title="class in cern.colt.bitvector">BitVector</A> <B>toBitVector</B>()</PRE>
<DL>
<DD>Converts the receiver to a bitvector.
In many cases this method only makes sense on one-dimensional matrices.
<b>WARNING:</b> The returned bitvector and the receiver share the <b>same</b> backing bits.
Modifying either of them will affect the other.
If this behaviour is not what you want, you should first use <tt>copy()</tt> to make sure both objects use separate internal storage.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD>Returns a (very crude) string representation of the receiver.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="xor(cern.colt.bitvector.BitMatrix)"><!-- --></A><H3>
xor</H3>
<PRE>
public void <B>xor</B>(<A HREF="../../../cern/colt/bitvector/BitMatrix.html" title="class in cern.colt.bitvector">BitMatrix</A> other)</PRE>
<DL>
<DD>Performs a logical <b>XOR</b> of the receiver with another bit matrix.
The receiver is modified so that a bit in it has the
value <code>true</code> if and only if one of the following statements holds:
<ul>
<li>The bit initially has the value <code>true</code>, and the
corresponding bit in the argument has the value <code>false</code>.
<li>The bit initially has the value <code>false</code>, and the
corresponding bit in the argument has the value <code>true</code>.
</ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - a bit matrix.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>columns() != other.columns() || rows() != other.rows()</tt>.</DL>
</DD>
</DL>
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