/*
* eXist Open Source Native XML Database
* Copyright (C) 2009 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.util;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import org.exist.dom.NodeProxy;
/**
This class implements a version
of the insertion sort algorithm.
The implementation is inspired on
the work of Michael Maniscalco in
C++
http://www.michael-maniscalco.com/sorting.htm
@author José María Fernández (jmfg@users.sourceforge.net)
*/
public final class InsertionSort {
public final static void sortByNodeId(NodeProxy[] a, int lo0, int hi0)
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if (a[lo0].getNodeId().compareTo(a[lo0 + 1].getNodeId()) > 0) {
SwapVals.swap(a,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
NodeProxy temp=a[i+1];
if (temp.getNodeId().compareTo(a[i].getNodeId()) < 0) {
int j;
for(j=i;j>=lo0 && temp.getNodeId().compareTo(a[j].getNodeId()) < 0;j--) {
a[j+1]=a[j];
}
a[j+1]=temp;
}
}
}
public final static <C extends Comparable<? super C>> void sort(C[] a, int lo0, int hi0)
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if(a[lo0].compareTo(a[lo0+1]) > 0) {
SwapVals.swap(a,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
C temp = a[i+1];
if(temp.compareTo(a[i]) < 0) {
int j;
for(j=i;j>=lo0 && temp.compareTo(a[j]) < 0;j--) {
a[j+1]=a[j];
}
a[j+1]=temp;
}
}
}
public final static <C extends Comparable<? super C>> void sort(C[] a, int lo0, int hi0, int b[])
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if(a[lo0].compareTo(a[lo0+1]) > 0) {
SwapVals.swap(a,lo0,lo0+1);
if(b!=null) SwapVals.swap(b,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
C tempa = a[i+1];
if(tempa.compareTo(a[i]) < 0) {
int j;
// Avoiding warnings
int tempb=0;
if(b!=null) tempb=b[i+1];
for(j=i;j>=lo0 && tempa.compareTo(a[j]) < 0;j--) {
a[j+1]=a[j];
if(b!=null) b[j+1]=b[j];
}
a[j+1]=tempa;
if(b!=null) b[j+1]=tempb;
}
}
}
public final static <C> void sort(C[] a, Comparator<C> comp, int lo0, int hi0)
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if(comp.compare(a[lo0],a[lo0+1]) > 0) {
SwapVals.swap(a,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
C temp = a[i+1];
if(comp.compare(temp,a[i]) < 0) {
int j;
for(j=i;j>=lo0 && comp.compare(temp,a[j]) < 0;j--) {
a[j+1]=a[j];
}
a[j+1]=temp;
}
}
}
public final static <C extends Comparable<? super C>> void sort(List<C> a, int lo0, int hi0)
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if((a.get(lo0)).compareTo(a.get(lo0+1)) > 0) {
SwapVals.swap(a,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
C temp = a.get(i+1);
if(temp.compareTo(a.get(i)) < 0) {
int j;
for(j=i;j>=lo0 && temp.compareTo(a.get(j)) < 0;j--) {
a.set(j+1,a.get(j));
}
a.set(j+1,temp);
}
}
}
public final static void sort(long a[], int lo0, int hi0, Object b[])
//------------------------------------------------------------
{
// First case, no element or only one!
if(lo0>=hi0) return;
// Second case, at least two elements
if(a[lo0] > a[lo0+1]) {
SwapVals.swap(a,lo0,lo0+1);
if(b!=null) SwapVals.swap(b,lo0,lo0+1);
}
// 2b, just two elements
if(lo0+1 == hi0) return;
// Last case, the general one
for (int i = lo0 + 1; i < hi0; i++) {
long tempa=a[i+1];
if(tempa<a[i]) {
int j;
Object tempb=null;
if(b!=null) tempb=b[i+1];
for(j=i;j>=lo0 && tempa<a[j];j--) {
a[j+1]=a[j];
if(b!=null) b[j+1]=b[j];
}
a[j+1]=tempa;
if(b!=null) b[j+1]=tempb;
}
}
}
public static void main(String[] args) throws Exception {
List<String> l = new ArrayList<String>();
if(args.length==0) {
String[] a=new String[] {
"Rudi",
"Herbert",
"Anton",
"Berta",
"Olga",
"Willi",
"Heinz"
};
for (int i = 0; i < a.length; i++)
l.add(a[i]);
} else {
System.err.println("Ordering file "+args[0]+"\n");
try {
java.io.BufferedReader is=new java.io.BufferedReader(new java.io.FileReader(args[0]));
String rr;
while((rr=is.readLine())!=null) {
l.add(rr);
}
is.close();
} catch(Exception e) {
}
}
long a;
long b;
a=System.currentTimeMillis();
sort(l, 0, l.size() - 1);
b=System.currentTimeMillis();
System.err.println("Ellapsed time: "+(b-a)+" size: "+l.size());
for (int i = 0; i < l.size(); i++)
System.out.println(l.get(i));
}
}