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。 uGn BlR$}
插入排序: @HTs.4
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package org.rut.util.algorithm.support; xi=0kO
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import org.rut.util.algorithm.SortUtil; )Y&B63]B
/** k%8kt4\wn6
* @author treeroot ]yQqx*
* @since 2006-2-2 +U<.MVOo.
* @version 1.0 S?zP;
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*/ !acuOBv,
public class InsertSort implements SortUtil.Sort{ @NiLKcL#
1cx%+-
/* (non-Javadoc) $WE=u 9m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wz@[rMf
*/ #V)l>
public void sort(int[] data) { A6+qS
[
int temp; C8do8$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <pXOE-G5
} N?8nlrDQ
} ?9 W2ax-4
} _dECAk
&b
lYS "
} ,<C~DSAyZ
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冒泡排序: bMsThoePT
@+_pj.D
package org.rut.util.algorithm.support; ks69Z|D
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import org.rut.util.algorithm.SortUtil; =*.S<Ko)
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/** xIV#}z0
* @author treeroot *=]UWM~]
* @since 2006-2-2
_,v>P2)
* @version 1.0 +;)Xu}
*/ }A[5\V^D*
public class BubbleSort implements SortUtil.Sort{ I~E&::,
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/* (non-Javadoc) bSQj=|h1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +;*4.}
*/ &h.?~Ri
public void sort(int[] data) { dj4a)p|YN
int temp; ]dV$H
for(int i=0;i for(int j=data.length-1;j>i;j--){ /Z~$`!J
if(data[j] SortUtil.swap(data,j,j-1); 2f{a||
}
f+.sm
} YG5mzP<T
} &~2IFp
} D3%2O`9
d`=LZio
} _ElG&hyp
0m"Ni:KEf
选择排序: QHc([%oV
mPk'a
package org.rut.util.algorithm.support; ]|+M0:2?
,3y9yJQa*#
import org.rut.util.algorithm.SortUtil; 7-!n-
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/** .B:ZyTI
* @author treeroot J:yv82
* @since 2006-2-2 =:gKh
* @version 1.0 QxYm3x5
*/ P}v
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public class SelectionSort implements SortUtil.Sort { #'_#t/u
fp' '+R[
/* ,|:.0g[n
* (non-Javadoc) TTz=*t+D
* .\R9tt}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A@}5'LzL
*/ djdTh
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public void sort(int[] data) { Qr$'Q7
int temp; u}@N
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for (int i = 0; i < data.length; i++) { &B{zS K$N
int lowIndex = i; D$hQ-K
for (int j = data.length - 1; j > i; j--) { 7g\v (P
if (data[j] < data[lowIndex]) { nR{<xD^
lowIndex = j; 4z0gyCAC A
} 4&mY-N7A
} ys9:";X;}
SortUtil.swap(data,i,lowIndex); ,hn#DJ)
} q`*.F#/4c
} GW,EyOE+~
/mkT7,]
} Q,KNZxT,q
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Shell排序: |Ea%nghl
QLY;@-jF$
package org.rut.util.algorithm.support; Kb%Y%j
FRQ.ix2
import org.rut.util.algorithm.SortUtil; J@5iD
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/** KU|W85ye
* @author treeroot /~NX<Ye&
* @since 2006-2-2 qp})4XT v
* @version 1.0 1>Sfv|ZP,
*/ %1i:*~g
public class ShellSort implements SortUtil.Sort{ :uCwWv
syl7i>P
/* (non-Javadoc) pJHdY)Cz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FyEKqYl
*/ cEL:5*cAU}
public void sort(int[] data) { $Tbsre\MJ
for(int i=data.length/2;i>2;i/=2){ ._rPM>B?
for(int j=0;j insertSort(data,j,i); BE0l2[i?
} ljbAfd
} .YF1H<gwa
insertSort(data,0,1); BH'*I
yv
} Oi\ s
vEI{AmogRx
/** |^1g*fy?
* @param data 1m5l((d
* @param j Rw'}>?k]
* @param i >5t!
Xt
*/ cAN!5?D\
private void insertSort(int[] data, int start, int inc) { K<^p~'f4P
int temp; %np(z&@wi
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BWxfY^,'&6
} uzHMQp
} ]$ d ;P
} kTH""h{
S${%T$>
} R3G\Gchd
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快速排序: (9`dLw5
AO8 #l
YP?
package org.rut.util.algorithm.support; %\,9S`0
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import org.rut.util.algorithm.SortUtil; "`cN k26JZ
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/** f6K.F
* @author treeroot Pb;c:HeI/
* @since 2006-2-2 0ZwXuq
* @version 1.0 bwhH2 ^ !
*/ jZ-s6r2=
public class QuickSort implements SortUtil.Sort{ $365VTh"
>v, si].
/* (non-Javadoc) UH6 7<_mK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b4dviYI
*/ M 5w/TN
public void sort(int[] data) { +@^);b6
quickSort(data,0,data.length-1); pD({"A.x9z
} _b%)
private void quickSort(int[] data,int i,int j){ L$3 lsu!4n
int pivotIndex=(i+j)/2; kd !?N
file://swap (eU 4{X7
SortUtil.swap(data,pivotIndex,j); %H\J@{f
5C1EdQ4S0
int k=partition(data,i-1,j,data[j]); b9X*2pnWJ
SortUtil.swap(data,k,j); -->0e{y
if((k-i)>1) quickSort(data,i,k-1); v]{UH{6
if((j-k)>1) quickSort(data,k+1,j); CR'%=N04^
Rs5 lL-I
} l90"1I A
/** MAkr9AKb,
* @param data K [DpH&
* @param i 2lsUCQI;
* @param j WqF,\y%W*
* @return t}_ #N'`
*/ Q
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private int partition(int[] data, int l, int r,int pivot) { <9ucpV
do{ LE<J<~2Z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \fTQNF
SortUtil.swap(data,l,r); ISNL='%
} %\<b{x# G
while(l SortUtil.swap(data,l,r); :CE4<
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return l; 1V1I[CxlX
} I<940PZ
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} )
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改进后的快速排序: iWD|F-
Zw9;g+9
package org.rut.util.algorithm.support; \PE;R.v_:
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import org.rut.util.algorithm.SortUtil; eo9/
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/** X-HE9PT.
* @author treeroot p?Azn>qBa
* @since 2006-2-2 4=tR_s
* @version 1.0 ]Orx%8QS!
*/ {o24A:M
public class ImprovedQuickSort implements SortUtil.Sort { &Pr\n&9A
C")genMH
private static int MAX_STACK_SIZE=4096; ]j*2PSJG
private static int THRESHOLD=10; tNTSy=
/* (non-Javadoc) |[>@Kk4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zl5'%b$&
*/ !e|\1v'0
public void sort(int[] data) { pIlEoG=[_
int[] stack=new int[MAX_STACK_SIZE]; p'
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&|>~7(
int top=-1; 1/Ts .\K3
int pivot; _HUbE /
int pivotIndex,l,r; f,HUr% @
#Lhv=0op
stack[++top]=0; Z0Z6aZeb
stack[++top]=data.length-1; }sXTZX
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while(top>0){ Ym6d'd<9(
int j=stack[top--]; @oA z
int i=stack[top--]; lME>U_E
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pivotIndex=(i+j)/2; KG'i#(u[
pivot=data[pivotIndex]; k]@]a
W" 5nS =d%
SortUtil.swap(data,pivotIndex,j); ,L/ x\_28
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file://partition 7{|QkTg C
l=i-1; WUYI1Ij;
r=j; <sH}X$/
do{ rpT.n-H>%A
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K!-OUm5A
SortUtil.swap(data,l,r); USBQEt
} ]Ox5F@
while(l SortUtil.swap(data,l,r); &~,4$&_
SortUtil.swap(data,l,j); $m 4-^=
0*$w(*
if((l-i)>THRESHOLD){ U[C4!k:0
stack[++top]=i; eM5?fE&!&
stack[++top]=l-1; 9@
tp#
} x|6]+?l@6
if((j-l)>THRESHOLD){ <g[z jV9p
stack[++top]=l+1; ?5C'9 V
stack[++top]=j; 5'lPXKn+L
} Aedf (L7\
JVE\{ e)
} `%C -7D'?
file://new InsertSort().sort(data); "j^i6RS
insertSort(data); [?!I*=*b
} fO*jCl
/** $83B10OQ&L
* @param data !J`lA
*/ D|;O9iks#
private void insertSort(int[] data) { 2{OR#v~
int temp; ~^mUu`@r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7;'33Bm*
} V>{< pS
} / ;]5X
} ,lyW'<~gA
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} Ni,nQ;9
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归并排序: M;(,0d k
f-b],YE
package org.rut.util.algorithm.support; kx"10Vw
K@D\5s|1|
import org.rut.util.algorithm.SortUtil; +a1x;
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/** M([#Py9h
* @author treeroot MY&Jdmga
* @since 2006-2-2 Uzu6>yT
* @version 1.0 "LMj,qZ1!
*/ D &@]
public class MergeSort implements SortUtil.Sort{ %,$ n^{v
[|}IS@
/* (non-Javadoc) Rj8%% G-pt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Em#Ela
*/ K2
public void sort(int[] data) { mgs(n5V5
int[] temp=new int[data.length]; vvoxK 0
mergeSort(data,temp,0,data.length-1); -yYdj1y;
} N##`
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i_
private void mergeSort(int[] data,int[] temp,int l,int r){ ?6#won
int mid=(l+r)/2; KyvZ?R
if(l==r) return ; U|(+-R8Z
mergeSort(data,temp,l,mid); PNU(;&2<
mergeSort(data,temp,mid+1,r); y8Va>ul"U
for(int i=l;i<=r;i++){ x0*{oP
temp=data; G#M)5'Q]U
} yU? jmJ
int i1=l; 6*OL.~WE
int i2=mid+1; 39pG-otJ
for(int cur=l;cur<=r;cur++){ VJh8`PVX
if(i1==mid+1) Z:;}
data[cur]=temp[i2++]; (~T*yH ~
else if(i2>r) e|~MJu+1
data[cur]=temp[i1++]; k4TWfl^}9
else if(temp[i1] data[cur]=temp[i1++]; !xM5
A[f
else aQkOQy
data[cur]=temp[i2++]; }[*'
} sE1cvAw9l
} gT+/nSrLV
wBPo{
} 2|1fb-AR
[3%mNNk
改进后的归并排序: 5~Y`ikwxL
+^)v"@,VP
package org.rut.util.algorithm.support; jvT'N@
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import org.rut.util.algorithm.SortUtil; D}-.<
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/** Rx%S<i;9
* @author treeroot ?b7\m":'
* @since 2006-2-2 *bkb-nKw
* @version 1.0 8v:{BHX
*/ R>Ra~b
public class ImprovedMergeSort implements SortUtil.Sort { gk ]QR.
Jh[0xb
private static final int THRESHOLD = 10; HpwMm^
|WS)KR !
/* YJi%vQ*]
* (non-Javadoc) \& JZ
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* R>'
%}|v/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tc2.ciU
*/ Zg;$vIhn
public void sort(int[] data) { _z5/&tm_H
int[] temp=new int[data.length]; Io6/Fv>!
mergeSort(data,temp,0,data.length-1); GW2\YU^{
} \l+v,ELX=
%Bq~b$
private void mergeSort(int[] data, int[] temp, int l, int r) { Ebg8qDE
int i, j, k; :1v,QEb\
int mid = (l + r) / 2; 0D-`>_
if (l == r) F_-Lu]*
return; OLw]BJXYaE
if ((mid - l) >= THRESHOLD) ul{x|R
mergeSort(data, temp, l, mid); 8\"<t/_
W
else ez4!5&TzRm
insertSort(data, l, mid - l + 1); R!nf^*~
if ((r - mid) > THRESHOLD) RNIXQns-=S
mergeSort(data, temp, mid + 1, r); bMH~vR
else QV4|f[Ki%
insertSort(data, mid + 1, r - mid); >A#5` $i
=u~nLL
for (i = l; i <= mid; i++) { \0$+*ejz
temp = data; nD
wh
} MqmQ52HR
for (j = 1; j <= r - mid; j++) { 4WT[(
temp[r - j + 1] = data[j + mid]; OV>&`puL
} |OQ]F
int a = temp[l]; 4;`z6\u9-
int b = temp[r]; PK\Z Rl
for (i = l, j = r, k = l; k <= r; k++) { :X>Wd+lY:_
if (a < b) { -jH|L{Iyq}
data[k] = temp[i++]; ;hj lRQ\
a = temp; U}92%W?
} else { r@G*Fx8Z
data[k] = temp[j--]; 1?@HOu
b = temp[j]; 1U\ap{z@
}
(s8b?Ol/
} )~2\4t4|g
} S^O9}<2g
O'4G'H)
/** W"\~O"a
* @param data +C~h(
* @param l 9a`LrB
* @param i M7#!Y=
*/ 7QO/; zL
private void insertSort(int[] data, int start, int len) { ;i@S}LwL
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
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} {f06Ki
} -wU]L5uP
} xGs}hVlZiC
} 7# AIX],
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堆排序: j~v`q5X
*)m:u :
package org.rut.util.algorithm.support; }*fBHzNN
c^}G=Z1@
import org.rut.util.algorithm.SortUtil; O|Uz)Y94
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/** N{J
1C6
* @author treeroot }:8}i;#M
* @since 2006-2-2 gt{kjrTv&
* @version 1.0 ^s~)"2 g
*/ 2A_1 E\
public class HeapSort implements SortUtil.Sort{ 9f~qD&~
T//xxH]w-
/* (non-Javadoc) Po ?MTA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o30C\
*/ P2n8H Fi
public void sort(int[] data) { wFMH\a
MaxHeap h=new MaxHeap(); `gSMb
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h.init(data); f:PlMv!{
for(int i=0;i h.remove(); TV{GHB!p"
System.arraycopy(h.queue,1,data,0,data.length); sL@\,]Y
} L('1NN2
/x49!8
private static class MaxHeap{ _V$'nz#>e
.?{no}u.
void init(int[] data){ -,")GA+[7
this.queue=new int[data.length+1]; *s4|'KS2o
for(int i=0;i queue[++size]=data; x^K4&'</
fixUp(size); cUq]PC$|
} Ic(qA{SM
} c~hH
7/v
L"ho|v9:
private int size=0; akvi^]x
pX%:XpC!h
private int[] queue; }r,M(Zr
DvH-M3
public int get() { # `=Zc7gf
return queue[1]; dgP eH8_
} R&cTMd
5Od%Jhtt
public void remove() { &ZD@-"@
SortUtil.swap(queue,1,size--); SXw r$)4_
fixDown(1); t/[lA=0 )2
} kgo#JY-4
file://fixdown 7 z
private void fixDown(int k) { O?OAXPK2
int j; /MtmO$.
while ((j = k << 1) <= size) { \=0;EI-j
if (j < size %26amp;%26amp; queue[j] j++; btg= # u
if (queue[k]>queue[j]) file://不用交换 ANPG3^w
break; L^e*_q2d:>
SortUtil.swap(queue,j,k); KeyKLkg>
k = j; `x=kb;
} <@`K^g;W
} xFUD9TM
private void fixUp(int k) { d '2JMdbc
while (k > 1) { nxN("$'cq
int j = k >> 1; 7h9oY<W
if (queue[j]>queue[k]) 1%M^MT%&
break; <;i&-,
SortUtil.swap(queue,j,k); RCqL~7C+ k
k = j; /,7#%D
} lJa-O
} [
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} h1>.w
pr
XXwIp-'
} %|@?)[;
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SortUtil: e7G>'K
N
cHCcc
package org.rut.util.algorithm; Ct/6<
3sBWtz
import org.rut.util.algorithm.support.BubbleSort; w;VUP@Wm
import org.rut.util.algorithm.support.HeapSort; dFeGibI{
import org.rut.util.algorithm.support.ImprovedMergeSort; a[^dK-
import org.rut.util.algorithm.support.ImprovedQuickSort; Ahd{f!
import org.rut.util.algorithm.support.InsertSort; Kc9)Lzu+
import org.rut.util.algorithm.support.MergeSort;
K~L"A]+
import org.rut.util.algorithm.support.QuickSort; gKU*@`6G
import org.rut.util.algorithm.support.SelectionSort; dkEnc
import org.rut.util.algorithm.support.ShellSort; 7.5\LTM>9e
uJ*|SSN~
/** r'}#usB(
* @author treeroot bVRxGn @l
* @since 2006-2-2 _}Gs9sHr0K
* @version 1.0 `).;W
*/ $AFiPH9
public class SortUtil { Z?",+|4
public final static int INSERT = 1; Q6Zh%\+h(
public final static int BUBBLE = 2; p|Fhh\,*`X
public final static int SELECTION = 3; D/{ Spw@
public final static int SHELL = 4; .>zkS*oX4z
public final static int QUICK = 5; of<>M4/g4y
public final static int IMPROVED_QUICK = 6; Dc>)j s|"
public final static int MERGE = 7; ;rta#pRn
public final static int IMPROVED_MERGE = 8; \t&6$"n(B6
public final static int HEAP = 9; Y@%6*uTLa
^_Z Qf
public static void sort(int[] data) { Z42v@?R.!W
sort(data, IMPROVED_QUICK); J2#=`|t"
} kqAQrg]n
private static String[] name={ TAYt:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e$(i!G)
}; M/sqOhg
ELNA-ZKp
private static Sort[] impl=new Sort[]{ cfe[6N
new InsertSort(), zck |jhJ6
new BubbleSort(), 0\}j[-`pF
new SelectionSort(), <