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快速排序: nud,ag
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; W"? |O Q'
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/** j*t>CB4
* @author treeroot .\= GfF'
* @since 2006-2-2 {:xINQ=}D
* @version 1.0 ^)<>5.%1''
*/ H_sLviYLu
public class QuickSort implements SortUtil.Sort{ E]WammX c
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/* (non-Javadoc) +8Yt91
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !SEHDRp
*/ `~vqu69MF9
public void sort(int[] data) { X&nkc/erx
quickSort(data,0,data.length-1); ~z#Faed=a
} hV#+joT8i
private void quickSort(int[] data,int i,int j){ X[_w#Hwp-
int pivotIndex=(i+j)/2; I1^0RB{~
//swap 3GUO
SortUtil.swap(data,pivotIndex,j); htk5\^(X
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int k=partition(data,i-1,j,data[j]); <use+C2
SortUtil.swap(data,k,j); ~j}di^<{
if((k-i)>1) quickSort(data,i,k-1); cG1-.,r
if((j-k)>1) quickSort(data,k+1,j); _?#}@?
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} B;9X{"
/** L$6{{Tw"2
* @param data 8`XpcK-0
* @param i Os'
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* @param j "^VKs_U8o
* @return "gjy+eosY
*/ /*!K4)$-*2
private int partition(int[] data, int l, int r,int pivot) { :"7V,UP
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do{ XSC._)ztEE
while(data[++l] while((r!=0)&&data[--r]>pivot); Zm,<