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快速排序: *XluVochrb
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package org.rut.util.algorithm.support; A=BT2j'l)
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import org.rut.util.algorithm.SortUtil; d5lD!
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/** ~{{@m]P
* @author treeroot C9nCSbGMY{
* @since 2006-2-2 y:R+; 91
* @version 1.0 =nG>aAG
*/ W-4R;!42
public class QuickSort implements SortUtil.Sort{ 94u~:'t>V
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/* (non-Javadoc) kntULI$`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %[k"A
*/ j.SE'a_
public void sort(int[] data) { ~.J{yrJ&
quickSort(data,0,data.length-1); aoU5pftC
} LTnbBh*mc
private void quickSort(int[] data,int i,int j){ G5!!^p~
int pivotIndex=(i+j)/2; E[>A# l53
//swap cf*SWKs
SortUtil.swap(data,pivotIndex,j); hU5_ dV
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int k=partition(data,i-1,j,data[j]); nF=[m; ~
SortUtil.swap(data,k,j); a]0hB:
if((k-i)>1) quickSort(data,i,k-1); {R5_=MG
if((j-k)>1) quickSort(data,k+1,j); lLNI5C
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} saVX2j6Y
/** O\}w&BE:h
* @param data v=x)]<E"_
* @param i XiAflO
* @param j lO8GnkLE
* @return H8qWY"<Vd
*/ 71,GrUV:
private int partition(int[] data, int l, int r,int pivot) { 'LG
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do{ ;!#IRR
while(data[++l] while((r!=0)&&data[--r]>pivot); Z#s-(wf
SortUtil.swap(data,l,r); sm qUFo
} X6n8Bi9Ik
while(l SortUtil.swap(data,l,r); L#`X;:
return l; ,o [FUi(#@
} D1Q]Z63,
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} :<,tGYg/!
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