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package org.rut.util.algorithm.support; l<LP&
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import org.rut.util.algorithm.SortUtil; r|fL&dtr
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/** RSyUaA
* @author treeroot y@: h4u"3
* @since 2006-2-2 mCsMqDH
* @version 1.0 }mYx_=+VX
*/ )D5"ap]fX
public class QuickSort implements SortUtil.Sort{ $m{:C;UH
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/* (non-Javadoc) BB!THj69a6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fg5kX
*/ 0$)>D==
public void sort(int[] data) { BxWPC#5
quickSort(data,0,data.length-1); HU8900k+
} n,V[eW#m'L
private void quickSort(int[] data,int i,int j){ c"n\cNP<
int pivotIndex=(i+j)/2; M4oy
//swap r?lf($D*
SortUtil.swap(data,pivotIndex,j); r4XK{KHn
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int k=partition(data,i-1,j,data[j]); gx8ouOh
SortUtil.swap(data,k,j); k"T}2 7
if((k-i)>1) quickSort(data,i,k-1); $m%fwB
if((j-k)>1) quickSort(data,k+1,j); j_!F*yul
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} NMa} {*sQ
/** :Ij{s
* @param data ,]ma+(|
* @param i tqvN0vY5
* @param j D9CaFu
* @return 6ryak!|[
*/ u~M
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private int partition(int[] data, int l, int r,int pivot) { Pw7]r<Q
do{ u<6<iD3y
while(data[++l] while((r!=0)&&data[--r]>pivot); J!v3i*j\
SortUtil.swap(data,l,r); iwZPpl";
} F3v!AvA|
while(l SortUtil.swap(data,l,r); x=hiQ>BIO0
return l; Qcq`libK
}
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