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。 L6=5]?B=
插入排序: M~saYJio
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package org.rut.util.algorithm.support; :G<~x8]k0
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import org.rut.util.algorithm.SortUtil; wD pL9 q
/** lz#@_F|.*
* @author treeroot Hg(nC*#/Q
* @since 2006-2-2 Io7=Mc4
* @version 1.0 `GooSX
*/ h&Q-QU
public class InsertSort implements SortUtil.Sort{ srU*1jD)
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/* (non-Javadoc) $4CsiZ6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gln
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*/ ^S(["6OJ(
public void sort(int[] data) { .X4UDZQg
int temp; y
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nhq,Y0YH
} eGrxS;NY
} Xr|e%]!**
} 6bpO#&T
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}
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冒泡排序: .uo:fxbd2
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package org.rut.util.algorithm.support; 5[+E?4,&
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import org.rut.util.algorithm.SortUtil; N2EX`@_2
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/** l\=He
* @author treeroot H#I%6k*\a
* @since 2006-2-2 `hl1R3nBM
* @version 1.0 Wl>$<D4mO[
*/ G8hDR^ra
public class BubbleSort implements SortUtil.Sort{ rEsGf+4
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/* (non-Javadoc) ='.G,aJ9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0yKPYA*j
*/ vo'{phtF)M
public void sort(int[] data) { ")GrQv a
int temp; 4d
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for(int i=0;i for(int j=data.length-1;j>i;j--){ upF^k%<y:
if(data[j] SortUtil.swap(data,j,j-1); Dj{t[z]$k
} A|0\ct
} b0Fr]oGp
} X;p4/ *U
} :P\RiaZAT
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} 7|7sA'1cM
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选择排序: @arMg2"o
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package org.rut.util.algorithm.support; ?pp|~A)b
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import org.rut.util.algorithm.SortUtil; q+Qrc]>-f
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/** cvv(OkC
* @author treeroot lJXihr
* @since 2006-2-2 R`emI7|
* @version 1.0 DWar3+u&0
*/ f5|Ew&1EP
public class SelectionSort implements SortUtil.Sort { 1ml{oqNj
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/* "+ 8Y{T
* (non-Javadoc) ?Kf?Z`9 *Y
* "0A !fRI~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L+$9 ,<'[
*/ T! fF1cpF\
public void sort(int[] data) { gJI(d6
int temp; !T8h+3I
for (int i = 0; i < data.length; i++) { 9^1.nE(R&
int lowIndex = i; j.y8H
for (int j = data.length - 1; j > i; j--) { E6y ?DXWH
if (data[j] < data[lowIndex]) { 73d7'Fw
lowIndex = j; i_qR&X
} R4g% $}
} srfM"Lb'
SortUtil.swap(data,i,lowIndex); 3eS
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} #1` lJ
} =L?(mNHT
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} hiA%Tq?
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Shell排序: H$n{|YO `
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package org.rut.util.algorithm.support; :%vD
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import org.rut.util.algorithm.SortUtil; /tGj`C&qtw
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/** :raYt5n1,y
* @author treeroot /MQI5Djg
* @since 2006-2-2 LZG~1tf
* @version 1.0 #}{1>g{sXt
*/ /5c;,.hm1R
public class ShellSort implements SortUtil.Sort{ A~UDtXN*4
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/* (non-Javadoc) jI9Kn41
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B^u qu
*/ Ss~dK-{e7
public void sort(int[] data) { ?sBbe@OC?
for(int i=data.length/2;i>2;i/=2){ #4<Rs|K
for(int j=0;j insertSort(data,j,i); *w;=o}`
} 89{@ 2TXR
} _~b$6Nf!83
insertSort(data,0,1); ,|
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} 'v*Y7zZ#K
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/** }TS4D={1
* @param data ?3
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* @param j tv1Z%Mx?Cp
* @param i =8F]cW'1`
*/ SXx2
private void insertSort(int[] data, int start, int inc) { 7VQk$im399
int temp; WhHnF*I
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z rV
} zT5@wm
} iB,Nqs3i*
} u.s-/ g
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} <U ?_-0
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快速排序: TZ,kmk#
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package org.rut.util.algorithm.support; 9"YOj_z
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import org.rut.util.algorithm.SortUtil; BiUOjQC#
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/** P`K?k<
* @author treeroot &91U(Go
* @since 2006-2-2 k*8
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* @version 1.0 HjO-6F#s
*/ u~9gR @e2{
public class QuickSort implements SortUtil.Sort{ S>oQm
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/* (non-Javadoc) 7EKQE>xj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? }2]G'7?
*/ ;*Cu >f7
public void sort(int[] data) { 0{PRv./`
quickSort(data,0,data.length-1); p/a)vN+*x'
} B>CG/]
private void quickSort(int[] data,int i,int j){ <d\Lvo[
int pivotIndex=(i+j)/2; 9)a:8/Y
file://swap /k(KA [bS
SortUtil.swap(data,pivotIndex,j); 8Jd\2T7 h
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int k=partition(data,i-1,j,data[j]); >e7w!v]
SortUtil.swap(data,k,j); ;nPjyu'g
if((k-i)>1) quickSort(data,i,k-1); =2z9Aq{
if((j-k)>1) quickSort(data,k+1,j); P%6-W5<
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} fr1/9E;
/** OI9V'W$
* @param data q+/c+u?=^
* @param i W7a aL
* @param j 1{sf Dw[s
* @return /OpVr15
*/ 4q`$nI Bi
private int partition(int[] data, int l, int r,int pivot) { (\ze
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do{ P-?ya!@"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y/ #{pyJ
SortUtil.swap(data,l,r); *jps}uk<
} Vn`-w
while(l SortUtil.swap(data,l,r); etEm#3
return l; =?}
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} :n:Gr?
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} |d* K'+
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改进后的快速排序: ]Y'oxh
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package org.rut.util.algorithm.support; Kzw)Q
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import org.rut.util.algorithm.SortUtil; F]hKi`@
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/** ==[a7|q
* @author treeroot $ePBw~yu
* @since 2006-2-2 I$o^F/RH
* @version 1.0 *;~*S4/P
*/ / ;U
public class ImprovedQuickSort implements SortUtil.Sort { B*+3A!{s
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private static int MAX_STACK_SIZE=4096; QeYO)sc`
private static int THRESHOLD=10; K0#kW \4`
/* (non-Javadoc) asDq(J`sQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Jb6CRn
*/ MX%D%}N
public void sort(int[] data) { b5hJaXJN
int[] stack=new int[MAX_STACK_SIZE]; Kp+Lk
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int top=-1; *[Ld\lRj
int pivot; +X4O.6Mn
int pivotIndex,l,r; OIK14D:
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stack[++top]=0; ps#+i
stack[++top]=data.length-1; &R54?u^A
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while(top>0){ D{&0r.2F
int j=stack[top--]; 8#OcrJzC
int i=stack[top--]; E$-u:Z<-
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pivotIndex=(i+j)/2; sE4=2p`x
pivot=data[pivotIndex]; HSk gS
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SortUtil.swap(data,pivotIndex,j); I*/?*p/I
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file://partition IR (6
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r=j; +?[,y
do{ 78v4cQ Y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LFsrqdzJ
SortUtil.swap(data,l,r); U!E
} SMr
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while(l SortUtil.swap(data,l,r); i2ap]
SortUtil.swap(data,l,j); 4WV'\R+m
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if((l-i)>THRESHOLD){ UXz0HRRS0
stack[++top]=i; B!|<<;Da6
stack[++top]=l-1; ~c>* 3*
} -jc8ku3*
if((j-l)>THRESHOLD){ (3YI> /#
stack[++top]=l+1; ^`Tns6u>
stack[++top]=j; olNgtSX
} T~%}(0=m
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} 3siWq9.
file://new InsertSort().sort(data); rO]7g
insertSort(data); ;-=Q6Ms8
} vc.:du
/** -2}-;|
* @param data '-sAi
*/ En:.U9?X
private void insertSort(int[] data) { bkQEfx.
int temp; sd;J(<Ofh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =H T:p:S
} Ys@M1o
} ecK{+Z'G
} bI)ItC_wf!
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} E|ce[|2
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归并排序:
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package org.rut.util.algorithm.support; xjHOrr
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import org.rut.util.algorithm.SortUtil; SST1vzm!
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/** k}-@N;zq
* @author treeroot p@H]F<
* @since 2006-2-2 c+PT"/3
* @version 1.0 >#}MDwKZD
*/ 6fvzTd},
public class MergeSort implements SortUtil.Sort{ t?NB#/#%x
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/* (non-Javadoc) o9dqHm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (?SK< 4!
*/ R u^v!l`!7
public void sort(int[] data) { t.sbfLu
int[] temp=new int[data.length]; =`f6@4H
mergeSort(data,temp,0,data.length-1); jk-hIl&
} tETT\y|'
#%CbZw@hJ9
private void mergeSort(int[] data,int[] temp,int l,int r){ Z:VqBqK
int mid=(l+r)/2; {@1C,8n;
if(l==r) return ; OR[6pr@
mergeSort(data,temp,l,mid); \Q+9sV
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mergeSort(data,temp,mid+1,r); 808E)
for(int i=l;i<=r;i++){ ,3_;JT"5
temp=data; R:zPU
} +NGjDa
int i1=l; Vv=/{31
int i2=mid+1; AV0m31b
for(int cur=l;cur<=r;cur++){ nQuiRTU<
if(i1==mid+1) cE}R7,y
data[cur]=temp[i2++]; D}|PBR
else if(i2>r) bWzv7#dd=
data[cur]=temp[i1++]; z=TaB^-)
else if(temp[i1] data[cur]=temp[i1++]; }mRus<Ax
else >
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data[cur]=temp[i2++]; yT Pi/=G
} (are2!Oq
} !w['@x.
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} zk8 o[4
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改进后的归并排序: ^6!C":f
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package org.rut.util.algorithm.support; NG-Wn+W@b
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import org.rut.util.algorithm.SortUtil; yjZ]_.
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/** _@CY_`a
* @author treeroot ;Ee!vqD2
* @since 2006-2-2 u.(
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* @version 1.0 Jy)E!{#x
*/ wD|,G!8E2
public class ImprovedMergeSort implements SortUtil.Sort { #L}YZ
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private static final int THRESHOLD = 10; ^R* _Q,o#
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/* 0z)
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* (non-Javadoc) O)n LV~X
* Js7(TFQE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " , c1z\
*/ >r%L=22+
public void sort(int[] data) { "KQ3EI/g
int[] temp=new int[data.length]; dR"H,$UH
mergeSort(data,temp,0,data.length-1); 5b
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} !@mV$nTA
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private void mergeSort(int[] data, int[] temp, int l, int r) { 8Xpf|?.
int i, j, k; K8NoY6
int mid = (l + r) / 2; u"IYAyzL
if (l == r) jf0D
return; OjxaA[$
if ((mid - l) >= THRESHOLD) 2XhtK
mergeSort(data, temp, l, mid); sg"J00
else 3-cCdn
insertSort(data, l, mid - l + 1); 7Q,9j.
if ((r - mid) > THRESHOLD) 8hWBTUN
mergeSort(data, temp, mid + 1, r); USz|Rh
else ;xFx%^M}br
insertSort(data, mid + 1, r - mid); n>]`8+a~%X
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for (i = l; i <= mid; i++) { `f.okqBAh
temp = data; Fu4LD-#
} ^lVZW8
for (j = 1; j <= r - mid; j++) { &$yC+cf
temp[r - j + 1] = data[j + mid]; n4Fh*d ixg
} 8A/;a{
int a = temp[l]; Wyu$J
int b = temp[r]; 4Q2=\-KFj
for (i = l, j = r, k = l; k <= r; k++) { }7iWm XlI
if (a < b) { PI{;3X}9$,
data[k] = temp[i++]; ;J|sH>i
a = temp; *,$cW,LN
} else { 9(?9yFbj5
data[k] = temp[j--]; Cz=HxU80J
b = temp[j]; E$5)]<p! <
} dQ6:c7hp>D
} |J:n'}
} 4;anoqiG\
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/** /DOV/>@5%
* @param data &u5OL?>
* @param l );T0n
* @param i C^ngdba\
*/ \l^L?69
private void insertSort(int[] data, int start, int len) { :^7P. lhK
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z3!j>X_w
} U ObI&*2
} `"CIy_m
} )eFXjnHN
} #clOpyT*
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堆排序: 0zrgK;9
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package org.rut.util.algorithm.support; MB]8iy8
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import org.rut.util.algorithm.SortUtil; ^(<Ecdz(
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/** &R