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快速排序: B7imV@<
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package org.rut.util.algorithm.support; =hl }.p
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import org.rut.util.algorithm.SortUtil; NO :a;
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/** GgKEP,O
* @author treeroot 8_N]e'WUh
* @since 2006-2-2 ;| 1$Q!4
* @version 1.0 <tioJG{OT
*/
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public class QuickSort implements SortUtil.Sort{ Sfdu`MQR
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/* (non-Javadoc) ,i@X'<;y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +@r*}
*/ f5 `g
public void sort(int[] data) { kwsp9 0)
quickSort(data,0,data.length-1); 4bgqg0z>
} J`2"KzR0w"
private void quickSort(int[] data,int i,int j){ )m. 4i =X
int pivotIndex=(i+j)/2; 7B?c{
//swap Pi|o` d
SortUtil.swap(data,pivotIndex,j); =9T$Gr
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int k=partition(data,i-1,j,data[j]); 8U_{|]M
SortUtil.swap(data,k,j); W6Y@U$P#G
if((k-i)>1) quickSort(data,i,k-1); D+>1]ij
if((j-k)>1) quickSort(data,k+1,j); 0iJue&
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} o6p98Dpg
/** ^b
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* @param data 4f<$4d^md
* @param i H*r>Y
* @param j <