📄 subject_65174.htm
字号:
<blockquote><p>
回复者:ochinchina 回复日期:2003-12-19 11:12:32
<br>内容://--------------------<BR>// Number.java<BR>//<BR>public class Number<BR>{<BR> private int m_width = 0;<BR> private int m_length = 0;<BR> <BR> public Number( int l, int w )<BR> {<BR> m_length = l;<BR> m_width = w;<BR> }<BR> <BR> public static int widthSum( Number n1, Number n2 )<BR> {<BR> return n1.m_width + n2.m_width;<BR> }<BR> <BR> public static int absLengthDiff( Number n1, Number n2 )<BR> {<BR> return Math.abs( n1.m_length - n2.m_length );<BR> }<BR> <BR> <BR>}<BR><BR>//-----------------------------------<BR>//<BR>// ResultItem.java<BR>//<BR><BR>public class ResultItem<BR>{<BR> private int m_pos1 = 0;<BR> private int m_pos2 = 0;<BR> <BR> public ResultItem( int pos1, int pos2 )<BR> {<BR> m_pos1 = pos1;<BR> m_pos2 = pos2;<BR> }<BR> <BR> public int pos1()<BR> {<BR> return m_pos1;<BR> }<BR> <BR> public int pos2()<BR> {<BR> return m_pos2;<BR> }<BR> <BR> public String toString()<BR> {<BR> return "(" + m_pos1 + "," + m_pos2 + ")";<BR> }<BR> <BR>}<BR><BR>//-------------------------------------------------------<BR>//<BR>// Resolver.java<BR>//<BR><BR>import java.util.ArrayList;<BR>import java.util.Arrays;<BR><BR>public class Resolver<BR>{<BR> private ArrayList m_numbers = new ArrayList();<BR> private ArrayList m_result = new ArrayList();<BR> private ArrayList m_possibleList = new ArrayList();<BR> <BR> private static final int MIN_WIDTH = 17;<BR> private static final int MAX_WIDTH = 24;<BR> <BR> private int m_min = Integer.MAX_VALUE;<BR> <BR> Resolver()<BR> {<BR> }<BR> <BR> void addNumber( Number n )<BR> {<BR> m_numbers.add( n );<BR> }<BR> <BR> int numbers()<BR> {<BR> return m_numbers.size();<BR> }<BR> <BR> Number getNumber( int index )<BR> {<BR> return (Number) m_numbers.get( index );<BR> }<BR> <BR> void resolve()<BR> {<BR> for( int i = 0, n = m_numbers.size(); i < n; i++ ) {<BR> for( int j = i + 1; j < n; j++ ) {<BR> if( validWidthSum( i, j ) ) {<BR> m_possibleList.add( new ResultItem( i, j ) );<BR> }<BR> }<BR> }<BR> <BR> realResolve( m_possibleList, new ArrayList(), 0 );<BR> }<BR> <BR> void realResolve( ArrayList l, ArrayList result, int sum )<BR> {<BR> if( l.size() <= 0 ) {<BR> if( sum < m_min && result.size() * 2 + 1 >= numbers() ) {<BR> m_result = (ArrayList) result.clone();<BR> m_min = sum;<BR> }<BR> return;<BR> }<BR> <BR> for( int i = 0, n = l.size(); i < n; i++ ) {<BR> <BR> ResultItem item = (ResultItem) l.get( i );<BR> <BR> result.add( item );<BR> <BR> ArrayList tmp = (ArrayList)l.clone();<BR> <BR> removeItemsContainPos( tmp, item.pos1() );<BR> removeItemsContainPos( tmp, item.pos2() );<BR> <BR> realResolve( tmp, result, sum + absLengthDiff( item ) );<BR> <BR> result.remove( item );<BR> }<BR> <BR> }<BR> <BR> void removeItemsContainPos( ArrayList l, int pos )<BR> {<BR> for( int i = l.size() - 1; i >= 0; i-- ) {<BR> ResultItem item = (ResultItem) l.get(i);<BR> <BR> if( item.pos1() == pos || item.pos2() == pos )<BR> l.remove( i );<BR> }<BR> }<BR> <BR> void printItems( ArrayList l )<BR> {<BR> for( int i = 0, n = l.size(); i < n; i++ ) {<BR> System.out.print( l.get(i) );<BR> System.out.print( " " );<BR> }<BR> System.out.println();<BR> }<BR> <BR> <BR> <BR> boolean validWidthSum( int num_pos1, int num_pos2 )<BR> {<BR> int w = Number.widthSum( getNumber( num_pos1), getNumber( num_pos2) );<BR> <BR> return w >= MIN_WIDTH && w <= MAX_WIDTH;<BR> }<BR> <BR> <BR> void printResult()<BR> {<BR> System.out.println("result: "+m_min );<BR> printItems( m_result);<BR> }<BR> <BR> private void addResultItem( ResultItem item )<BR> {<BR> m_result.add( item );<BR> }<BR> <BR> private int resultItems()<BR> {<BR> return m_result.size();<BR> }<BR> <BR> private ResultItem getResultItem( int index )<BR> {<BR> return (ResultItem) m_result.get( index );<BR> }<BR> <BR> private ResultItem removeResultItem( int index )<BR> {<BR> return (ResultItem) m_result.remove( index );<BR> }<BR><BR> private int resultAbsLengthDiffSum()<BR> {<BR> int sum = 0;<BR> <BR> for( int i = 0, n = m_result.size(); i < n; i++ ) {<BR> sum += absLengthDiff( (ResultItem) m_result.get( i ) );<BR> }<BR> <BR> return sum;<BR> }<BR> <BR> private int absLengthDiff( ResultItem item )<BR> {<BR> return Number.absLengthDiff( getNumber( item.pos1() ), getNumber( item.pos2() ) );<BR> }<BR> <BR> private int absLengthDiff( int number_pos1, int number_pos2 )<BR> {<BR> return Number.absLengthDiff( getNumber( number_pos1 ), getNumber( number_pos2 ) );<BR> }<BR> <BR> <BR> public static void main( String[] args )<BR> {<BR> Resolver resolver = new Resolver();<BR> <BR> resolver.addNumber( new Number( 10, 9 ) );<BR> resolver.addNumber( new Number( 15, 11 ) );<BR> resolver.addNumber( new Number( 12, 7 ) );<BR> resolver.addNumber( new Number( 11, 13 ) );<BR> resolver.addNumber( new Number( 10, 15 ) );<BR> <BR> resolver.resolve();<BR> resolver.printResult();<BR> <BR> }<BR> <BR>}<BR><BR>//-----------------------------------------------------------<BR><BR>save the above files in one directory. Compile them:<BR><BR>javac *.java<BR><BR>run it with following command:<BR><BR>java Resolver<BR><BR>it will print the result:<BR><BR>result: 1<BR>(0,4), (2,3 )<BR><BR>it means:<BR><BR>n1+n5,n3+n4, n2<BR><BR>and <BR><BR>|n1.l - n5.l | + | n3.l + n4.l | = 1
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>
<hr size=1>
<blockquote><p>
回复者:ochinchina 回复日期:2003-12-19 11:13:48
<br>内容://--------------------<BR>// Number.java<BR>//<BR>public class Number<BR>{<BR> private int m_width = 0;<BR> private int m_length = 0;<BR> <BR> public Number( int l, int w )<BR> {<BR> m_length = l;<BR> m_width = w;<BR> }<BR> <BR> public static int widthSum( Number n1, Number n2 )<BR> {<BR> return n1.m_width + n2.m_width;<BR> }<BR> <BR> public static int absLengthDiff( Number n1, Number n2 )<BR> {<BR> return Math.abs( n1.m_length - n2.m_length );<BR> }<BR> <BR> <BR>}<BR><BR>//-----------------------------------<BR>//<BR>// ResultItem.java<BR>//<BR><BR>public class ResultItem<BR>{<BR> private int m_pos1 = 0;<BR> private int m_pos2 = 0;<BR> <BR> public ResultItem( int pos1, int pos2 )<BR> {<BR> m_pos1 = pos1;<BR> m_pos2 = pos2;<BR> }<BR> <BR> public int pos1()<BR> {<BR> return m_pos1;<BR> }<BR> <BR> public int pos2()<BR> {<BR> return m_pos2;<BR> }<BR> <BR> public String toString()<BR> {<BR> return "(" + m_pos1 + "," + m_pos2 + ")";<BR> }<BR> <BR>}<BR><BR>//-------------------------------------------------------<BR>//<BR>// Resolver.java<BR>//<BR><BR>import java.util.ArrayList;<BR>import java.util.Arrays;<BR><BR>public class Resolver<BR>{<BR> private ArrayList m_numbers = new ArrayList();<BR> private ArrayList m_result = new ArrayList();<BR> private ArrayList m_possibleList = new ArrayList();<BR> <BR> private static final int MIN_WIDTH = 17;<BR> private static final int MAX_WIDTH = 24;<BR> <BR> private int m_min = Integer.MAX_VALUE;<BR> <BR> Resolver()<BR> {<BR> }<BR> <BR> void addNumber( Number n )<BR> {<BR> m_numbers.add( n );<BR> }<BR> <BR> int numbers()<BR> {<BR> return m_numbers.size();<BR> }<BR> <BR> Number getNumber( int index )<BR> {<BR> return (Number) m_numbers.get( index );<BR> }<BR> <BR> void resolve()<BR> {<BR> for( int i = 0, n = m_numbers.size(); i < n; i++ ) {<BR> for( int j = i + 1; j < n; j++ ) {<BR> if( validWidthSum( i, j ) ) {<BR> m_possibleList.add( new ResultItem( i, j ) );<BR> }<BR> }<BR> }<BR> <BR> realResolve( m_possibleList, new ArrayList(), 0 );<BR> }<BR> <BR> void realResolve( ArrayList l, ArrayList result, int sum )<BR> {<BR> if( l.size() <= 0 ) {<BR> if( sum < m_min && result.size() * 2 + 1 >= numbers() ) {<BR> m_result = (ArrayList) result.clone();<BR> m_min = sum;<BR> }<BR> return;<BR> }<BR> <BR> for( int i = 0, n = l.size(); i < n; i++ ) {<BR> <BR> ResultItem item = (ResultItem) l.get( i );<BR> <BR> result.add( item );<BR> <BR> ArrayList tmp = (ArrayList)l.clone();<BR> <BR> removeItemsContainPos( tmp, item.pos1() );<BR> removeItemsContainPos( tmp, item.pos2() );<BR> <BR> realResolve( tmp, result, sum + absLengthDiff( item ) );<BR> <BR> result.remove( item );<BR> }<BR> <BR> }<BR> <BR> void removeItemsContainPos( ArrayList l, int pos )<BR> {<BR> for( int i = l.size() - 1; i >= 0; i-- ) {<BR> ResultItem item = (ResultItem) l.get(i);<BR> <BR> if( item.pos1() == pos || item.pos2() == pos )<BR> l.remove( i );<BR> }<BR> }<BR> <BR> void printItems( ArrayList l )<BR> {<BR> for( int i = 0, n = l.size(); i < n; i++ ) {<BR> System.out.print( l.get(i) );<BR> System.out.print( " " );<BR> }<BR> System.out.println();<BR> }<BR> <BR> <BR> <BR> boolean validWidthSum( int num_pos1, int num_pos2 )<BR> {<BR> int w = Number.widthSum( getNumber( num_pos1), getNumber( num_pos2) );<BR> <BR> return w >= MIN_WIDTH && w <= MAX_WIDTH;<BR> }<BR> <BR> <BR> void printResult()<BR> {<BR> System.out.println("result: "+m_min );<BR> printItems( m_result);<BR> }<BR> <BR> private void addResultItem( ResultItem item )<BR> {<BR> m_result.add( item );<BR> }<BR> <BR> private int resultItems()<BR> {<BR> return m_result.size();<BR> }<BR> <BR> private ResultItem getResultItem( int index )<BR> {<BR> return (ResultItem) m_result.get( index );<BR> }<BR> <BR> private ResultItem removeResultItem( int index )<BR> {<BR> return (ResultItem) m_result.remove( index );<BR> }<BR><BR> private int resultAbsLengthDiffSum()<BR> {<BR> int sum = 0;<BR> <BR> for( int i = 0, n = m_result.size(); i < n; i++ ) {<BR> sum += absLengthDiff( (ResultItem) m_result.get( i ) );<BR> }<BR> <BR> return sum;<BR> }<BR> <BR> private int absLengthDiff( ResultItem item )<BR> {<BR> return Number.absLengthDiff( getNumber( item.pos1() ), getNumber( item.pos2() ) );<BR> }<BR> <BR> private int absLengthDiff( int number_pos1, int number_pos2 )<BR> {<BR> return Number.absLengthDiff( getNumber( number_pos1 ), getNumber( number_pos2 ) );<BR> }<BR> <BR> <BR> public static void main( String[] args )<BR> {<BR> Resolver resolver = new Resolver();<BR> <BR> resolver.addNumber( new Number( 10, 9 ) );<BR> resolver.addNumber( new Number( 15, 11 ) );<BR> resolver.addNumber( new Number( 12, 7 ) );<BR> resolver.addNumber( new Number( 11, 13 ) );<BR> resolver.addNumber( new Number( 10, 15 ) );<BR> <BR> resolver.resolve();<BR> resolver.printResult();<BR> <BR> }<BR> <BR>}<BR><BR>//-----------------------------------------------------------<BR><BR>save the above files in one directory. Compile them:<BR><BR>javac *.java<BR><BR>run it with following command:<BR><BR>java Resolver<BR><BR>it will print the result:<BR><BR>result: 1<BR>(0,4), (2,3 )<BR><BR>it means:<BR><BR>n1+n5,n3+n4, n2<BR><BR>and <BR><BR>|n1.l - n5.l | + | n3.l - n4.l | = 1
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>
<hr size=1>
<blockquote><p>
回复者:菜鸟11 回复日期:2003-12-25 10:56:19
<br>内容:搞定了.非常非常感谢!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<br>
<a href="javascript:history.go(-1)">返回上页</a><br><a href=http://www.copathway.com/cndevforum/>访问论坛</a></p></blockquote>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -