用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 GlXA-p<
插入排序: !N@S^JD6
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package org.rut.util.algorithm.support; e|2vb
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import org.rut.util.algorithm.SortUtil; !D.= 'V
/** i}v}K'`
* @author treeroot $.suu^>^w
* @since 2006-2-2 )nf=eU4|
* @version 1.0 [
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*/ aYv'H
public class InsertSort implements SortUtil.Sort{ UE}8Rkt
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/* (non-Javadoc) bIvJs9L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uzzWZ9Tv
*/ yv6Zo0s<J
public void sort(int[] data) { mq|A8>g
int temp; BK`Q)[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0~PXa(!^K
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冒泡排序: glOqft&>`
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package org.rut.util.algorithm.support; [[/ }1%
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import org.rut.util.algorithm.SortUtil; (`q6G d
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/** $ uz1
* @author treeroot +l[Z2mW
* @since 2006-2-2 ShEaL&'J
* @version 1.0 _G-b L;
*/ <Y}"D Yt
public class BubbleSort implements SortUtil.Sort{ Ti9:'I
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/* (non-Javadoc) Allt]P>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MHpL$g=5_
*/ EyKkjEXx_
public void sort(int[] data) { *<|~=*Ddf
int temp; ^cKv JSY
for(int i=0;i for(int j=data.length-1;j>i;j--){ pAUfG^v
if(data[j] SortUtil.swap(data,j,j-1); +[X.-,yW
} ,N))=/
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} $~w@0Yl
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选择排序: (d5vH)+A
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package org.rut.util.algorithm.support; @Le ^- v4
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import org.rut.util.algorithm.SortUtil; : e0R7sj
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/** *1ID`o
* @author treeroot Ul7pxzj
* @since 2006-2-2 @>
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* @version 1.0 pZ@W6}
*/ /`j K
public class SelectionSort implements SortUtil.Sort { eK=m0 2
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/* YN5OuKMUd'
* (non-Javadoc) R5'Z4.~
* f/IRO33
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =@ L5
*/ 'EH
public void sort(int[] data) { Gg3?2h"d
int temp; ~'Qpf 8)
for (int i = 0; i < data.length; i++) { ^%4(
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int lowIndex = i; mNBpb}
for (int j = data.length - 1; j > i; j--) { x jP" 'yU
if (data[j] < data[lowIndex]) { +lDGr/
lowIndex = j; F-reb5pt.=
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} SCI-jf3WN
SortUtil.swap(data,i,lowIndex); 56O<CgJF<
} )z4kP09
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Shell排序: !w;A=
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package org.rut.util.algorithm.support; q=E}#[EgY
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import org.rut.util.algorithm.SortUtil; u{E^<fW]
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/** f-f\}G&G
* @author treeroot }HA2ce\
* @since 2006-2-2 43orR !.Z
* @version 1.0 aP6%OI
*/ G7kFo6Cb
public class ShellSort implements SortUtil.Sort{ %;B(_ht<-w
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/* (non-Javadoc) i>kNz(*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :;hBq4h
*/ 8HH.P`Vk#
public void sort(int[] data) { ]B[/sqf
for(int i=data.length/2;i>2;i/=2){ Q'Jpsmwu
for(int j=0;j insertSort(data,j,i); %f3Nml
} tWX+\ |
} 2AdHj&XE
insertSort(data,0,1); )l!&i?h%
} IpaJ<~ p
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/** dC;d>j,
* @param data >`,#%MH#
* @param j ReGO9}
* @param i K~hlwjrt
*/ EJ
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private void insertSort(int[] data, int start, int inc) { 1r-,VX7
int temp; k}Clq;G
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vsr~[d=
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} )V+Dqh,-g
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快速排序: <&m
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package org.rut.util.algorithm.support; /*R' xBr
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import org.rut.util.algorithm.SortUtil; s)7`r6w
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/** /RULPd
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* @author treeroot d7-F&!sQ
* @since 2006-2-2 aid)q&AcQ
* @version 1.0 G}hkr
*/ !E>3N:
public class QuickSort implements SortUtil.Sort{ "F.J>QBd
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/* (non-Javadoc) HIp {< M3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rx"VscB6z
*/ fS$Yl~-m?
public void sort(int[] data) {
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quickSort(data,0,data.length-1); U -^S<H
} P@T $6%~
private void quickSort(int[] data,int i,int j){ /7HIL?r
int pivotIndex=(i+j)/2; fO}1(%}d
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SortUtil.swap(data,pivotIndex,j); +iDz+3v(
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int k=partition(data,i-1,j,data[j]); `9"jHw`D
SortUtil.swap(data,k,j); M+&eh*:z:
if((k-i)>1) quickSort(data,i,k-1); Mud\Q["
if((j-k)>1) quickSort(data,k+1,j); WaO;hy~us
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} 1~ZHC[ `
/** By"ul:.D
* @param data H(ftOd.y
* @param i %KVRiX
* @param j 5>k~yaju/
* @return <HX-qNA?
*/ P6Z,ci17
private int partition(int[] data, int l, int r,int pivot) { HBkQ`T
do{ E6IL,Iq9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WAXrA$:3J
SortUtil.swap(data,l,r); 21J82M
} g=' 2~c
while(l SortUtil.swap(data,l,r); Y?SJQhN6W
return l; oTa+E'q
} NZ? =pfK\s
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} r3lr`s`
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改进后的快速排序: Cr\/<zy1-e
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package org.rut.util.algorithm.support; ]$k
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import org.rut.util.algorithm.SortUtil;
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/** L1w4WFWO
* @author treeroot o\YdL2:X
* @since 2006-2-2 *} 4;1OVT
* @version 1.0 8i
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*/ *xN jhR]7v
public class ImprovedQuickSort implements SortUtil.Sort { HDG"a&$
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private static int MAX_STACK_SIZE=4096; SxQDqoA~
private static int THRESHOLD=10; ;@\JscNJ|
/* (non-Javadoc) +[nYu)puP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ll^O+>1dO
*/ O*"wQ50Ou
public void sort(int[] data) { o~N-x*
int[] stack=new int[MAX_STACK_SIZE]; `-e}:9~q
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int top=-1; 6E%k{ r
int pivot; .:Xe* Q
int pivotIndex,l,r; N@
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stack[++top]=0; k5<