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package org.rut.util.algorithm.support; :R{Xd{?
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import org.rut.util.algorithm.SortUtil; `n
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/** c>:}~.~T
* @author treeroot 1,T8@8#
* @since 2006-2-2 L0qo/6|C
* @version 1.0 }?$d~]t)
*/ y+_GL=J
public class QuickSort implements SortUtil.Sort{ tcSn`+Bu_`
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/* (non-Javadoc) y'*^ '
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b4Zkj2L
*/ [53rSr
public void sort(int[] data) { 4M*UVdJ;
quickSort(data,0,data.length-1); b|u4h9
} @E{c P%fv
private void quickSort(int[] data,int i,int j){ vK!,vKa.
int pivotIndex=(i+j)/2; H\W60|z9
//swap ^j[>.D
SortUtil.swap(data,pivotIndex,j); .<gAa"
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int k=partition(data,i-1,j,data[j]); ':R)i.TS
SortUtil.swap(data,k,j); <oS2a/Nd
if((k-i)>1) quickSort(data,i,k-1); #b4`Wcrj
if((j-k)>1) quickSort(data,k+1,j); .wtb7U;7
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} ;}#tm9S;
/** ]t\fw'
* @param data WO/;o0{d\9
* @param i |#^u%#'[2
* @param j "KcSOjvJ
* @return \vT0\1:|i
*/ 8RVNRV@g%
private int partition(int[] data, int l, int r,int pivot) { 2shr&Mfp[
do{ [a53H$`\5
while(data[++l] while((r!=0)&&data[--r]>pivot); r4@!QR<h
SortUtil.swap(data,l,r); f7)}A/$4+
} o )GNV
while(l SortUtil.swap(data,l,r); Q6Vy}
return l; T#DJQ"$
} ELk$lm&