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。 |8{iIvi/
插入排序: =V]i?31[
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package org.rut.util.algorithm.support; Prx s2 i 8
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import org.rut.util.algorithm.SortUtil; C\@YH]
/** XXmu|h
* @author treeroot uN0fWj]
* @since 2006-2-2 VgoKi
* @version 1.0 "hY^[@7 W
*/ [m[~A|S
public class InsertSort implements SortUtil.Sort{ Dx*oSP.qX
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/* (non-Javadoc) 'c(Y")QP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~cj:AIF
*/ '^3pF2lIw
public void sort(int[] data) { @_ZWP
int temp; Jd6Q 9~z#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nh/ArugP5P
} .T wF]v
} vbh#[,lh
} {:OVBX
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} z( [ $,e\
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冒泡排序: EoWzHa
VZ@@j[F(
package org.rut.util.algorithm.support; NVZNQ{
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import org.rut.util.algorithm.SortUtil; 1+c(G?Ava
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/** }mZ*f y0t
* @author treeroot >(KUYX?p
* @since 2006-2-2 1RHH<c%2n
* @version 1.0 t1g%o5?;
*/ @|A&\a-"J
public class BubbleSort implements SortUtil.Sort{ m?G+#k;K
uxiX"0)g>
/* (non-Javadoc) o;I86dI6C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iGNKf|8{
*/ xmd$Jol^
public void sort(int[] data) { {\Y,UANZ
int temp; B#n}y
for(int i=0;i for(int j=data.length-1;j>i;j--){ #wuE30d
if(data[j] SortUtil.swap(data,j,j-1); g~u!,Zc
} ]r5Xp#q2
} 1K',Vw_
} :u93yH6~8
} 0LuY"(LR
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} V t;&2v
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选择排序: \9Zfu4WR
7O :Gi*MA
package org.rut.util.algorithm.support; A1T;9`E
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import org.rut.util.algorithm.SortUtil; .sMi"gg
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/** 4HmRsOl
* @author treeroot 1&E&8In]$r
* @since 2006-2-2 W7>_nK+g?
* @version 1.0 %'5 wwl
*/ ~,1X>N"
public class SelectionSort implements SortUtil.Sort { D)6|| z}
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/* (I
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* (non-Javadoc) 1&nrZG9
* T5G+^XDA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m':m`,c!
*/ -8e tH&
public void sort(int[] data) { ueo3i1
int temp; "+Rm4_
for (int i = 0; i < data.length; i++) { WG4|Jf Y
int lowIndex = i; &_gmQ;%t:
for (int j = data.length - 1; j > i; j--) { 40/[uW"
if (data[j] < data[lowIndex]) { 2b1:Tt9
lowIndex = j; !\v3bOi&
} ,aL"Wy(
} c~;.m<yrf
SortUtil.swap(data,i,lowIndex); \LXNdE2B
} H[U*'
2TJ
} @Q5^Q'!
q\Z1-sl~s
} |9M
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Shell排序: vUA`V\
i?9Lf
package org.rut.util.algorithm.support; Pw1H)<X
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import org.rut.util.algorithm.SortUtil; =2'^:4Z
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/** AlV2tffY^
* @author treeroot VQ`O;n6/`
* @since 2006-2-2
A(5?
ci
* @version 1.0 qpCi61lTDJ
*/ JOk`emle
public class ShellSort implements SortUtil.Sort{ "5bk82."
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/* (non-Javadoc) {'[1I_3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S_=u v)%a
*/ '(*D3ysU
public void sort(int[] data) { a[De
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); 4 -W?u51"
} vkLG<Y
} UzXbaQQ2g
insertSort(data,0,1); >dY"B$A>
} PX'%)5:q;i
#UIg<:
/** HN%ZN}
* @param data 7#QH4$@1P
* @param j un=)k;oh
* @param i ZO^+KE"
*/ )vzT\dQ|
private void insertSort(int[] data, int start, int inc) { (re D
int temp; u:|5jF
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z/=v@@tj
} !h\3cs`QU
} h Bw~l?G
} kPe9G
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} hJ :+*46
m? hX=
快速排序:
!JA63
5+J/Qm8{bb
package org.rut.util.algorithm.support; A`Nb"N$H13
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import org.rut.util.algorithm.SortUtil; up?8Pq*
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/** wVTo7o%U
* @author treeroot va.wdk g
* @since 2006-2-2 ?a}~yz#B(
* @version 1.0 :OM>z4mQ
*/ \I=:,cz*,
public class QuickSort implements SortUtil.Sort{ +tF,E^
.^,vK7
/* (non-Javadoc) z?^p(UH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M
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*/ >v{m^|QqB
public void sort(int[] data) { /k,p]/e
quickSort(data,0,data.length-1); tz{]H9
} )
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private void quickSort(int[] data,int i,int j){ -rfO"D>
int pivotIndex=(i+j)/2; V !$m{)Y
file://swap s_N!6$tS
SortUtil.swap(data,pivotIndex,j); 0=iJT4IEJ
W~4|Z=f
int k=partition(data,i-1,j,data[j]); sQvEUqy9
SortUtil.swap(data,k,j); KqQrxi?f-
if((k-i)>1) quickSort(data,i,k-1); X}Lp!.i9o
if((j-k)>1) quickSort(data,k+1,j); RzkJS9)m
n3w2&
}
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/** =}[V69a
* @param data ]_h"2|
* @param i h4CB1K
* @param j aw`mB,5U
* @return ]!QeJ'BLM
*/ O-k(5Zb
private int partition(int[] data, int l, int r,int pivot) { Q1rwTg\
do{ ]pt @
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S@_GjCpn
SortUtil.swap(data,l,r); ?@#<>7V
} nC w1H kW
while(l SortUtil.swap(data,l,r); %K%z<R8
return l; c-,/qn/
} P~&X$H%e
T-MLW=Vu
} Yr!3mU-Uvt
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改进后的快速排序: 4%pvw;r
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package org.rut.util.algorithm.support; b4Z#]o
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import org.rut.util.algorithm.SortUtil; Qk6FK]buV
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/** ,SBL~JJ
* @author treeroot &lD4-_2J
* @since 2006-2-2 4 ClW*l
* @version 1.0 '=r.rW5
*/ k$zDofdfp
public class ImprovedQuickSort implements SortUtil.Sort { C$_H)I
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private static int MAX_STACK_SIZE=4096; sXFD]cF
private static int THRESHOLD=10; k~H-:@
/* (non-Javadoc) /{lls2ycW%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h)w<{/p(
*/ _Nd\Cm
public void sort(int[] data) { 79Iz,_
int[] stack=new int[MAX_STACK_SIZE]; Eb*DP_
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h1
int top=-1; 8=$@azG
int pivot; CyE.q^Wm
int pivotIndex,l,r; =(o$1v/k
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stack[++top]=0; umi#Se3&
stack[++top]=data.length-1; J[9jNCq|
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while(top>0){ Qtk'^Fc
int j=stack[top--]; L%"&_v#a^
int i=stack[top--]; q+N}AKawB
&B)
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pivotIndex=(i+j)/2; 6Cibc.vt
pivot=data[pivotIndex]; 1{A4_/R
E\QSU88^
SortUtil.swap(data,pivotIndex,j); !nu#r$K(
' _N >
file://partition '?QZ7A
l=i-1; i'a M#4V
r=j; @sVBG']p
do{ 1$c*/Tc:E
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4X^0:.bT&
SortUtil.swap(data,l,r); I%%$O'S
} RvVnVcn^#
while(l SortUtil.swap(data,l,r); @wpm;]
SortUtil.swap(data,l,j); (bXCc
i22R3&C
if((l-i)>THRESHOLD){ Dhq7qz
stack[++top]=i; 0-=QQOART\
stack[++top]=l-1; X[VQ 1
} __zsrIUJ
if((j-l)>THRESHOLD){ )sW1a
stack[++top]=l+1; <Wl!
Qog'
stack[++top]=j; k(s3~S2h
} xa K:@/
iJ~pX\FKO
} GU=h2LSi]
file://new InsertSort().sort(data); 1aSuRa
insertSort(data); oI^iL\\2h
} $BG9<:p
/** pt<84CP
* @param data g|W~0A@D
*/ 1 }:k w
private void insertSort(int[] data) { hj-M
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int temp; E;%{hAD{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0O[q6!&]
} }O_6wi
} ,"DkMK4%
} ZV&=B%J bs
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} 6MZfoR
vq x;FAqZ
归并排序: 'I;pS)sb
olh|.9Kdj}
package org.rut.util.algorithm.support; xe}"0'g
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import org.rut.util.algorithm.SortUtil; M[N|HsI8?
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/** B~z&
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* @author treeroot eE1w<] Eg
* @since 2006-2-2 yfYAA*S!z
* @version 1.0 BHa!jw_~o
*/ r0_3 `;H
public class MergeSort implements SortUtil.Sort{ +-5CM0*&
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/* (non-Javadoc)
~B/|#o2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )5bhyzSZI
*/ TMGZHOAt
public void sort(int[] data) { Dj?95Z,r
int[] temp=new int[data.length]; T"3WB o
mergeSort(data,temp,0,data.length-1); ;5oY)1
} +>{{91mN
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private void mergeSort(int[] data,int[] temp,int l,int r){ B>gC75
int mid=(l+r)/2; @aI`ru+a
if(l==r) return ; \\BblzGMR
mergeSort(data,temp,l,mid); aMT&}3
mergeSort(data,temp,mid+1,r); 9Lv`3J^~
for(int i=l;i<=r;i++){ }&ZO
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temp=data; $YFn$.70\
} GT`:3L
int i1=l; /SSl$
int i2=mid+1; Hz28L$
for(int cur=l;cur<=r;cur++){ UtY<R
if(i1==mid+1) Ktg6 *L/
data[cur]=temp[i2++]; XVE(p3-
else if(i2>r) z9E*Mh(NE
data[cur]=temp[i1++]; E}yl@8g:#
else if(temp[i1] data[cur]=temp[i1++]; 5q@o,d
else ix,5-j
data[cur]=temp[i2++]; :QB Wy
} ig3uY#
} 1NA>W
e>X&[\T
} y1FS?hSD0
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改进后的归并排序: 4,UvTw*2z
Bz]j&`
package org.rut.util.algorithm.support; JoIffI?{(D
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import org.rut.util.algorithm.SortUtil; cl)%qIXj}H
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/** L~CwL
* @author treeroot |Kh#\d
* @since 2006-2-2 e*=N \$
* @version 1.0 ps^Z)x`GV
*/ sYgpK92
public class ImprovedMergeSort implements SortUtil.Sort { PudwcP{
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private static final int THRESHOLD = 10; 6E85mfFS
' !ZFK}
/* HS>Z6|uLY
* (non-Javadoc) 2wpLP^9Vr<
* vaS/WEY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) szGp<xv_p
*/ e\tcP
public void sort(int[] data) { mi6<;N2w|
int[] temp=new int[data.length]; cea%M3
mergeSort(data,temp,0,data.length-1); 8?J\
} yIOoVi\m
rt^<=|Z
private void mergeSort(int[] data, int[] temp, int l, int r) { c5nl!0XX
int i, j, k; >a5CW~Z]
int mid = (l + r) / 2; _/ ]4:("
if (l == r) 4F^(3RKZ|
return; +'x|VPY.PG
if ((mid - l) >= THRESHOLD) ZQZ>{K
mergeSort(data, temp, l, mid); xOp8[6Ga'
else rs`H':a/
insertSort(data, l, mid - l + 1); q!t_qX7u
if ((r - mid) > THRESHOLD) XSkx<"U*
mergeSort(data, temp, mid + 1, r); t,)`Zu$
else ,=.&
insertSort(data, mid + 1, r - mid); R*VJe+5w
m?`U;R[
for (i = l; i <= mid; i++) { ?L|m:A`
temp = data; $i7iv
} gk1I1)p
for (j = 1; j <= r - mid; j++) { YP5V~-O/
temp[r - j + 1] = data[j + mid]; .r[kNh@
b%
} 8fY1~\G:\
int a = temp[l]; [f!sBJ!
int b = temp[r]; \,+act"v
for (i = l, j = r, k = l; k <= r; k++) { Dh*Uv,
if (a < b) { tl !o;`W
data[k] = temp[i++]; ^/h,C^/;
a = temp; 8F9sKRq|rO
} else { c!d>6:\
data[k] = temp[j--]; ]_G!(`Udh
b = temp[j]; TGl It<&
} rd vq(\A
} lb{<}1YR0o
} M[g9D
cNZuwS~,
/** y 4j0nF
* @param data mQ*:?\@
* @param l /r^J8B*
* @param i A(S =
*/ 7Y"CeU-S
private void insertSort(int[] data, int start, int len) { dj3}Tjt
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _3i.o$GO
} xlg 6cO
} k z"F4?,
} B{hP#bYK
} ?ey!wcv~
*G"L]Nq#
堆排序: +]
s"* 'V$
hN=YC\l
package org.rut.util.algorithm.support; 0pYO-@E
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import org.rut.util.algorithm.SortUtil; .'.#bH9K
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/** _ +q.R
* @author treeroot
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* @since 2006-2-2 (U#4j 6Q
* @version 1.0 A%qlB[!:
*/ Dl_y[9
public class HeapSort implements SortUtil.Sort{ )u ) ]#z
jq#uBU%
/* (non-Javadoc) i"V2=jTeBv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @F%H 1
*/ X458%)G!(K
public void sort(int[] data) { w
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MaxHeap h=new MaxHeap(); G$kspN*"A
h.init(data); 2Z!%Q}Do
for(int i=0;i h.remove(); ,1J+3ugp&
System.arraycopy(h.queue,1,data,0,data.length); vN'Y);$
} ?0QoYA@.$
Z#0hh%E"|y
private static class MaxHeap{ ^LO=&Cq
;j|T#-.
void init(int[] data){ O{:_-eI&d
this.queue=new int[data.length+1]; #z$FxZT<b
for(int i=0;i queue[++size]=data; k<x
%
fixUp(size); x =7hOI5u
} >*r H Nf
} [}-CXB
oNH&VHjU
private int size=0; !#s1'x{o
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private int[] queue; RKB--$ibj
K89 AZxH
public int get() { i]oSVXx4WC
return queue[1]; DG1C_hu
i
} & c a-
ozv:$>v@"
public void remove() { vF,\{sgW
SortUtil.swap(queue,1,size--); g|L" |Q
fixDown(1); J}a 8N.S
} 46^LPC"x
file://fixdown DWT4D)C,U
private void fixDown(int k) { OJ0Dw*K<
int j; KFd !wZ@e
while ((j = k << 1) <= size) { 7[aSP5e>T
if (j < size %26amp;%26amp; queue[j] j++; k=L(C^VP
if (queue[k]>queue[j]) file://不用交换 :y#KR\T1
break; 'oNY4.[
SortUtil.swap(queue,j,k); rBG8.E36J
k = j; "uK`!{
} N]qX^RSb
} E{_$C!.
private void fixUp(int k) { &aD]_+b
while (k > 1) { svki=GD_(.
int j = k >> 1; 9nIBs{`/Ac
if (queue[j]>queue[k]) Q(Uj5 aX
break; Q?]307g7
SortUtil.swap(queue,j,k); :{2exu
k = j; bj)dYjf
} m E<n=g=
} m<]b]FQ
^}nz^+R
} 96M?tTa
^3`CP4DT
} m#y?k1GY
7/^`y')
SortUtil: %*d(1?\o
z=q
package org.rut.util.algorithm; ODE9@]a
@#sBom+K`
import org.rut.util.algorithm.support.BubbleSort; Sg$14B
import org.rut.util.algorithm.support.HeapSort; ?Uz7($}
import org.rut.util.algorithm.support.ImprovedMergeSort; pC9Ed9uRK
import org.rut.util.algorithm.support.ImprovedQuickSort; %) A-zzj
import org.rut.util.algorithm.support.InsertSort; '&_<!Nv3
import org.rut.util.algorithm.support.MergeSort; \g|u|Y.2[
import org.rut.util.algorithm.support.QuickSort; MN|8(f5Gs
import org.rut.util.algorithm.support.SelectionSort; 8GC(?#Kb
import org.rut.util.algorithm.support.ShellSort; ("HT0a
f#9DU}2m
/** %DJxUuh
* @author treeroot TMsEHd
* @since 2006-2-2 $O|J8; "v
* @version 1.0 ~4p@m>>
*/ \A-w,]9^V
public class SortUtil { Mq7d*Bgb
public final static int INSERT = 1; "+^d.13+]
public final static int BUBBLE = 2; C`|'+
public final static int SELECTION = 3; Gx75EQ2
public final static int SHELL = 4; ;dq AmBG{8
public final static int QUICK = 5; )KvQaC
public final static int IMPROVED_QUICK = 6; "D V.%7*^
public final static int MERGE = 7; r{~K8!=oU]
public final static int IMPROVED_MERGE = 8; ^s'ozCk 0
public final static int HEAP = 9; XWo=?(iA
%dXf C!
public static void sort(int[] data) { wg? :jK
sort(data, IMPROVED_QUICK); .F=15A
} WZ"g:Khw
private static String[] name={ aOYRenqu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IyE9G:fY
}; $;<h<#_n;
; *G[3kk
private static Sort[] impl=new Sort[]{ m4:b?[
new InsertSort(), F8 4LMk?U
new BubbleSort(), :z=/z!5:j
new SelectionSort(), c9e
}P
new ShellSort(), d OY+| P\
new QuickSort(), h[d|y_)f
new ImprovedQuickSort(), IQK__)
new MergeSort(), D_E^%Ea&`
new ImprovedMergeSort(), 64s9Dy@%F
new HeapSort() NJ-cP m
}; uQ9/ 7"S
}-{l(8-
public static String toString(int algorithm){ =dbLA ,z9
return name[algorithm-1]; 9\W~5J<7
} 45`Gv
5gq3 >qo
public static void sort(int[] data, int algorithm) { {rr
ED
impl[algorithm-1].sort(data); 7M:0%n$
} \$J!B&i
VHsNz WI
public static interface Sort { %^RlE@l9
public void sort(int[] data); r ]1|I6:&)
} (bo{vX
hB:R8Y^?H
public static void swap(int[] data, int i, int j) { Fs:l"5~>1
int temp = data; f f"Clp
data = data[j]; zqAK|jbL
data[j] = temp; ;2RCgX!'%
} Nzc1)t=
} n?@o:c5,r