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package org.rut.util.algorithm.support; 8c' 5P
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import org.rut.util.algorithm.SortUtil; an,JV0
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/** ~'t+X
* @author treeroot c'uDK>
* @since 2006-2-2 0*50uK=5
* @version 1.0 yPT\9"/
*/ mJa8;X!r6
public class QuickSort implements SortUtil.Sort{ *ez7Q
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/* (non-Javadoc) x4[
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eDL0Vw
*/ g#r,u5<*?
public void sort(int[] data) { ~vstuRRST
quickSort(data,0,data.length-1);
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} VCc57Bo
private void quickSort(int[] data,int i,int j){ iuHs.k<z
int pivotIndex=(i+j)/2; V
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//swap d;E
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SortUtil.swap(data,pivotIndex,j); YfJQ]tt1
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int k=partition(data,i-1,j,data[j]); "= >8UR
SortUtil.swap(data,k,j); _2rxDd1#.
if((k-i)>1) quickSort(data,i,k-1); ;0;5+ J7
if((j-k)>1) quickSort(data,k+1,j); #r;uM+
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} $*vj7V_
/** R*>EbOuI
* @param data Yy4l -} "
* @param i 0w ;#4X:m
* @param j w02t9vz
* @return _0!<iN L
*/ [J+]1hCZ|
private int partition(int[] data, int l, int r,int pivot) { "Tc[1{eI
do{ #b+>O+vx8
while(data[++l] while((r!=0)&&data[--r]>pivot); &d i=alvv1
SortUtil.swap(data,l,r); g0Jy:`M
} z:p9&mi