svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.ui / src / main / java / org / gvsig / gui / beans / swing / treeTable / MergeSort.java @ 40561
History | View | Annotate | Download (3.86 KB)
1 |
/**
|
---|---|
2 |
* gvSIG. Desktop Geographic Information System.
|
3 |
*
|
4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 3
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
* For any additional information, do not hesitate to contact us
|
22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
23 |
*/
|
24 |
package org.gvsig.gui.beans.swing.treeTable; |
25 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
26 |
*
|
27 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
28 |
*
|
29 |
* This program is free software; you can redistribute it and/or
|
30 |
* modify it under the terms of the GNU General Public License
|
31 |
* as published by the Free Software Foundation; either version 2
|
32 |
* of the License, or (at your option) any later version.
|
33 |
*
|
34 |
* This program is distributed in the hope that it will be useful,
|
35 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
36 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
37 |
* GNU General Public License for more details.
|
38 |
*
|
39 |
* You should have received a copy of the GNU General Public License
|
40 |
* along with this program; if not, write to the Free Software
|
41 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
42 |
*
|
43 |
* For more information, contact:
|
44 |
*
|
45 |
* Generalitat Valenciana
|
46 |
* Conselleria d'Infraestructures i Transport
|
47 |
* Av. Blasco Ib??ez, 50
|
48 |
* 46010 VALENCIA
|
49 |
* SPAIN
|
50 |
*
|
51 |
* +34 963862235
|
52 |
* gvsig@gva.es
|
53 |
* www.gvsig.gva.es
|
54 |
*
|
55 |
* or
|
56 |
*
|
57 |
* IVER T.I. S.A
|
58 |
* Salamanca 50
|
59 |
* 46005 Valencia
|
60 |
* Spain
|
61 |
*
|
62 |
* +34 963163400
|
63 |
* dac@iver.es
|
64 |
*/
|
65 |
/* CVS MESSAGES:
|
66 |
*
|
67 |
* $Id: MergeSort.java 13136 2007-08-20 08:38:34Z evercher $
|
68 |
* $Log$
|
69 |
* Revision 1.1 2007-08-20 08:34:46 evercher
|
70 |
* He fusionado LibUI con LibUIComponents
|
71 |
*
|
72 |
* Revision 1.1 2006/10/23 08:18:39 jorpiell
|
73 |
* A?adida la clase treetable
|
74 |
*
|
75 |
*
|
76 |
*/
|
77 |
/**
|
78 |
* @author Jorge Piera Llodr? (piera_jor@gva.es)
|
79 |
*/
|
80 |
public abstract class MergeSort extends Object { |
81 |
protected Object toSort[]; |
82 |
protected Object swapSpace[]; |
83 |
|
84 |
public void sort(Object array[]) { |
85 |
if(array != null && array.length > 1) |
86 |
{ |
87 |
int maxLength;
|
88 |
|
89 |
maxLength = array.length; |
90 |
swapSpace = new Object[maxLength]; |
91 |
toSort = array; |
92 |
this.mergeSort(0, maxLength - 1); |
93 |
swapSpace = null;
|
94 |
toSort = null;
|
95 |
} |
96 |
} |
97 |
|
98 |
public abstract int compareElementsAt(int beginLoc, int endLoc); |
99 |
|
100 |
protected void mergeSort(int begin, int end) { |
101 |
if(begin != end)
|
102 |
{ |
103 |
int mid;
|
104 |
|
105 |
mid = (begin + end) / 2;
|
106 |
this.mergeSort(begin, mid);
|
107 |
this.mergeSort(mid + 1, end); |
108 |
this.merge(begin, mid, end);
|
109 |
} |
110 |
} |
111 |
|
112 |
protected void merge(int begin, int middle, int end) { |
113 |
int firstHalf, secondHalf, count;
|
114 |
|
115 |
firstHalf = count = begin; |
116 |
secondHalf = middle + 1;
|
117 |
while((firstHalf <= middle) && (secondHalf <= end))
|
118 |
{ |
119 |
if(this.compareElementsAt(secondHalf, firstHalf) < 0) |
120 |
swapSpace[count++] = toSort[secondHalf++]; |
121 |
else
|
122 |
swapSpace[count++] = toSort[firstHalf++]; |
123 |
} |
124 |
if(firstHalf <= middle)
|
125 |
{ |
126 |
while(firstHalf <= middle)
|
127 |
swapSpace[count++] = toSort[firstHalf++]; |
128 |
} |
129 |
else
|
130 |
{ |
131 |
while(secondHalf <= end)
|
132 |
swapSpace[count++] = toSort[secondHalf++]; |
133 |
} |
134 |
for(count = begin;count <= end;count++)
|
135 |
toSort[count] = swapSpace[count]; |
136 |
} |
137 |
} |
138 |
|