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。 *ml&}9
插入排序: }Ip"j]h
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package org.rut.util.algorithm.support; >AcpJ|V
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import org.rut.util.algorithm.SortUtil; QInow2/u
/** ]s
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* @author treeroot $)OUOv
* @since 2006-2-2 h'8w<n+%)
* @version 1.0 7Gb(&'n
*/ s(yV E
public class InsertSort implements SortUtil.Sort{ N7lWeF
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/* (non-Javadoc) Pw4j?pv2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u*R9x3&/5
*/ RZykwD(
public void sort(int[] data) { g=?KpI-pn0
int temp; {V&
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,Mwyk1:xix
} M,Y lhL
} .F'fBT`$
} (n{sp
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} QC:/xP
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冒泡排序: Nkfu k
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package org.rut.util.algorithm.support; /f!_dJ^
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import org.rut.util.algorithm.SortUtil; )2Gp3oD?
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/** zdA:K25"
* @author treeroot M4a-+T"
* @since 2006-2-2 ,j~R ^j
* @version 1.0
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*/ rQNT
public class BubbleSort implements SortUtil.Sort{ m,nV,}@J
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/* (non-Javadoc) e=t?mDh#E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \mZ\1wzn'{
*/ uNLB3Rdy}
public void sort(int[] data) { [c?']<f4
int temp; [P*3ld,,G%
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZIAiVq2)
if(data[j] SortUtil.swap(data,j,j-1); g0.D36
} YBgHX [q
} QjfQoT F
} F<q3{}1zR
} S EY
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} 0|X!Uw-Q%_
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选择排序: ?MhRdY
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package org.rut.util.algorithm.support; t#|E.G:=
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import org.rut.util.algorithm.SortUtil; qx5X2@-;:
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/** _C?<re3*
* @author treeroot |7Z,z0 ?V
* @since 2006-2-2 >vg!<%]W]
* @version 1.0 9/w'4bd
*/ YgaJ*%\
public class SelectionSort implements SortUtil.Sort { Co8b0-Z
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/* 9frx 60
* (non-Javadoc) r
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* -"5x? \.{m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o}5:vi]
*/ Yfy6o6*:
public void sort(int[] data) { 8xmw-s)
int temp; #&">x7?5
for (int i = 0; i < data.length; i++) { $P]%Px!x
int lowIndex = i; HSx~Fs^J
for (int j = data.length - 1; j > i; j--) { =S@$"_&
if (data[j] < data[lowIndex]) { Sm#;fx+
lowIndex = j; vII&v+C
} CGg:e:4
} |6B:tw/.
SortUtil.swap(data,i,lowIndex); 32:,g4!~6
} W0$G7s
} :EyH'v
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} vnz.81OR
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Shell排序: #RJy
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package org.rut.util.algorithm.support; X.s?=6}g
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import org.rut.util.algorithm.SortUtil; ~U8#Iq1
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/** nvD"_.K rJ
* @author treeroot 1L'[DKb'
* @since 2006-2-2 ?w#
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* @version 1.0 I(Nsm3L
*/ lGPC)Hu{`
public class ShellSort implements SortUtil.Sort{ S^)r,cC
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/* (non-Javadoc) GMU<$x8o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *cp|lW!ag
*/ #2DH_P
public void sort(int[] data) { L5yxaF{]
for(int i=data.length/2;i>2;i/=2){ N(&FATZUW
for(int j=0;j insertSort(data,j,i); N l_!%k:
} qx{.`AaZW
} &7Ixf?e!K
insertSort(data,0,1); `#fOY$#XB
} 2x e_Q70II
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/** OJ UM Y<5
* @param data =
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* @param j q22cp&gmX
* @param i =(v!pEF
*/ [&nwB!kt
private void insertSort(int[] data, int start, int inc) { DHt 8 f
int temp; ejo4mQ]a
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *"fg@B5
} @+1E|4L1vf
} .ET;wK
} JIb<>X,
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} xOT'4v&.
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快速排序: CI{]o&Tf
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package org.rut.util.algorithm.support; 0*3 <}
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import org.rut.util.algorithm.SortUtil; A ws#>l<
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/** k|A!5A2
* @author treeroot ]Vb#(2<2
* @since 2006-2-2 =V5.c+
* @version 1.0 V2 VsJ
*/ h!K
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public class QuickSort implements SortUtil.Sort{ I J4"X#Q/
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/* (non-Javadoc) 2 )j\Lg_M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1.,mNY^UN
*/ d`~#uN {
public void sort(int[] data) { 1xguG7
quickSort(data,0,data.length-1); !-.-!hBN
} v9inBBC q
private void quickSort(int[] data,int i,int j){ _D,8`na>K
int pivotIndex=(i+j)/2; tB_ V%qH
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SortUtil.swap(data,pivotIndex,j); W$'pUhq\H
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int k=partition(data,i-1,j,data[j]); yN>"r2
SortUtil.swap(data,k,j); MT6kJDyLu
if((k-i)>1) quickSort(data,i,k-1); ,o9)ohw
if((j-k)>1) quickSort(data,k+1,j); !5B9:p~-
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} Z;>~<#!4
/** J`RNik*>
* @param data IN%>46e`
* @param i }2NH>qvY
* @param j =fsaJ@q,R
* @return vhL&az
*/ ^F" *;8$
private int partition(int[] data, int l, int r,int pivot) { G0Wd"AV+
do{ zl:
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \Flq8S /t^
SortUtil.swap(data,l,r); c<DYk f
} Ra{B8)Q
while(l SortUtil.swap(data,l,r); COHJJONR
return l; dlT\VWMha(
} c hd${
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} 6\TstY3
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改进后的快速排序: [CUJ A
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package org.rut.util.algorithm.support; y:42H tS
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import org.rut.util.algorithm.SortUtil; xJ"Zg]d{
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/** 6~!YEuA
* @author treeroot 4X\*kF%
* @since 2006-2-2 ]Ea7b
* @version 1.0 JxLH]1b
*/ XS!ZTb>[
public class ImprovedQuickSort implements SortUtil.Sort { RChY+3,L)
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private static int MAX_STACK_SIZE=4096; 3FXMM&w
private static int THRESHOLD=10; gx6&'${=#
/* (non-Javadoc) 8uT6Q C f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .|aSGvE
*/ aDOH3Ri0K!
public void sort(int[] data) { 1|nB\xgu
int[] stack=new int[MAX_STACK_SIZE]; E{fnh50^Q.
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int top=-1; )/U1; O
int pivot; IL\mFjZ'
int pivotIndex,l,r; i&HV8&KygN
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stack[++top]=0; Dw#&x/G
stack[++top]=data.length-1; e{}o:r
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while(top>0){ DA
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int j=stack[top--]; }2r08,m
int i=stack[top--]; :5*<QJuI#A
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pivotIndex=(i+j)/2; vJCL
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pivot=data[pivotIndex]; s Y6'y'a95
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SortUtil.swap(data,pivotIndex,j); )m'_>-`^:
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file://partition UF%5/SiVX
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r=j; }O>Zu[8a
do{ ;VuB8cnL`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); os.x|R]_
SortUtil.swap(data,l,r); v8@dvT<
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while(l SortUtil.swap(data,l,r); Yq
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SortUtil.swap(data,l,j); d5=xOEv;
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if((l-i)>THRESHOLD){ -Q@d
stack[++top]=i; :$tW9*\KY
stack[++top]=l-1; "n
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if((j-l)>THRESHOLD){ q
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stack[++top]=l+1; \l2 s^7G_
stack[++top]=j; y2U:( H:l!
} ?qbp
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} RnrM
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file://new InsertSort().sort(data); 1v4kN
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insertSort(data); wtUG2 (
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/** 1P[Lz!C
* @param data 3aqmK.`H
*/ LC7LO
private void insertSort(int[] data) { &wuV}S7
int temp; !kcg#+s91
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .'a |St
} mr1}e
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} uqUo4z 5T
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} ,$]q2aL
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归并排序: =c,gK8C
X]fw9tZ
package org.rut.util.algorithm.support; V~_nyjrJM
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import org.rut.util.algorithm.SortUtil; m?j!0>
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/** }$)<k
* @author treeroot *Vl
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* @since 2006-2-2 jvV8`BQ{
* @version 1.0 z~H Gc"~
*/ e%U*~{m+
public class MergeSort implements SortUtil.Sort{ .vv*bx
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/* (non-Javadoc) fh_
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kOCxIJ!Xp=
*/ /pU6trIM
public void sort(int[] data) { m%[t&^b}T
int[] temp=new int[data.length]; FJLJ;]`7+
mergeSort(data,temp,0,data.length-1); kpH;D=;
} MuobMD}jqe
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private void mergeSort(int[] data,int[] temp,int l,int r){ p*0Ve21i,
int mid=(l+r)/2; IR
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if(l==r) return ; E(tBN]W.
mergeSort(data,temp,l,mid); +29\'w,
mergeSort(data,temp,mid+1,r); {h"\JI!
for(int i=l;i<=r;i++){
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temp=data; B@]7eVo
} `I8^QcP
int i1=l; swlWe}1
int i2=mid+1; ,}tdfkZFYl
for(int cur=l;cur<=r;cur++){ IDh`0/i]
if(i1==mid+1) Zir`IQ$
data[cur]=temp[i2++]; SR&
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else if(i2>r) skz]@{38
data[cur]=temp[i1++]; F}]_/cY7B
else if(temp[i1] data[cur]=temp[i1++]; Q:O>k CDV
else /6?plt&CA
data[cur]=temp[i2++]; y!gM)9vq
} j7 =3\SO
} ~
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改进后的归并排序: 9|?Lz
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package org.rut.util.algorithm.support; pRvs;klf
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import org.rut.util.algorithm.SortUtil; ~n^G<iXLp
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/** ;_/q>DR>,3
* @author treeroot Sx)Il~ x
* @since 2006-2-2 {z /^X<T
* @version 1.0 9.zQ<