Y$5uoq%p3A
$Jo4n>/
快速排序: ph$vP;}
&/n*>%2
package org.rut.util.algorithm.support; 1Ror1%Q"?
3yrb7Rn3
import org.rut.util.algorithm.SortUtil; neQ~h4U"
[DZ|Ltv
/** s1]m^,
* @author treeroot G}Ko*:fWS
* @since 2006-2-2 f_2(`T#
* @version 1.0 K3iQ/j~a q
*/ bC/Ql
public class QuickSort implements SortUtil.Sort{ Ew JNpecX
TM5 Y(Q*
/* (non-Javadoc) \ZA@r|=$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L54]l^ls>
*/ 61w
({F
public void sort(int[] data) { ob;O,&e0>
quickSort(data,0,data.length-1); n?778Wo}
} _G&gF.|
private void quickSort(int[] data,int i,int j){ jU-aa+
int pivotIndex=(i+j)/2; %Gl1Qi+Po_
//swap edo+ o{^
SortUtil.swap(data,pivotIndex,j); nMK$&h,{
k1.%ZZMM
int k=partition(data,i-1,j,data[j]); c'>_JlG~
SortUtil.swap(data,k,j); f`)*bx
if((k-i)>1) quickSort(data,i,k-1); #W&o]FAA3y
if((j-k)>1) quickSort(data,k+1,j);
O7CW#F
JOz4O
} ?rjB9AC_;t
/** JW!.+
Q
* @param data @,j,GE%
* @param i +n<W#O%
* @param j "x vizvR
* @return U:z5`z!
*/ ]q~bi<E9W
private int partition(int[] data, int l, int r,int pivot) { n@L@pgo%~
do{ (:I]v_qEYS
while(data[++l] while((r!=0)&&data[--r]>pivot); snWe&