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[JAVA]用Java实现的各种排序

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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。 ;ko6igx)+  
插入排序: n|XheG7:  
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package org.rut.util.algorithm.support; 0\X<vrW  
i1-%#YYF(  
import org.rut.util.algorithm.SortUtil; /]MelW  
/** )|^8`f  
* @author treeroot 0K26\1  
* @since 2006-2-2 di0@E<@1:  
* @version 1.0 G9yK/g&q  
*/ KAI2[ gs  
public class InsertSort implements SortUtil.Sort{ j%^4 1y  
Y?3tf0t/  
/* (non-Javadoc) WvSm!W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pt,L  
*/ ;l ZKgi8`  
public void sort(int[] data) { Fb =uN   
int temp; N&?V=X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1gbFl/i6T  
} *X2PT(e[  
} %A=/(%T>  
} # #2'QNN  
ck5cO-1>6  
} &ah%^Z4um  
oW 6Hufu+o  
冒泡排序: w K#*|  
yb ?Pyq.D  
package org.rut.util.algorithm.support; ?4Rd4sIM$u  
V|$PO Qa3  
import org.rut.util.algorithm.SortUtil; qqf*g=f  
wCruj`$  
/** !$oa6*<1  
* @author treeroot %xOxMK@  
* @since 2006-2-2 #?jsC)  
* @version 1.0 / Xb4'Qj  
*/ ^MF 2Q+  
public class BubbleSort implements SortUtil.Sort{ L\:m)g,F.  
Ez5t)l-  
/* (non-Javadoc) >(S)aug$1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tm^joK[{|J  
*/ ZL\^J8PRK  
public void sort(int[] data) { o,dp{+({  
int temp; 9&AO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,)#rD9ZnC  
if(data[j] SortUtil.swap(data,j,j-1); M K)}zjw  
} ~ILv*v@m  
} &{a!)I>  
} 6AG]7d<  
} NimgU Fa  
(EY@{'.&  
} MyllL@kP  
Hy&Z0W'l  
选择排序: @:GqOTN  
]Z8u0YtM)  
package org.rut.util.algorithm.support; 4^l9d  
3zD#V3 =  
import org.rut.util.algorithm.SortUtil; ^Z?m)qxvB  
C|TQf8  
/** 76 )"uqv1x  
* @author treeroot pka^7OWyN  
* @since 2006-2-2 ~1wt=Ln>  
* @version 1.0 4A6Y \ZXI  
*/ sA| SOAn  
public class SelectionSort implements SortUtil.Sort { o&Xp%}TI  
~44u_^a  
/* az0=jou<Zl  
* (non-Javadoc) &zX  W  
* H/x0'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S3Gr}N  
*/ eTvjo(Lvx  
public void sort(int[] data) { ZZI} Ot{  
int temp; 'kt6%d2  
for (int i = 0; i < data.length; i++) { @Xl(A]w%!  
int lowIndex = i; M?" 4 {  
for (int j = data.length - 1; j > i; j--) { ofQs /  
if (data[j] < data[lowIndex]) { O0L]xr  
lowIndex = j; *m+FMyr  
} 9U6$-]J  
} Yz_}*  
SortUtil.swap(data,i,lowIndex); KYm8|]'g  
} s0f+AS|}  
} y 2> 93m  
Y^!qeY  
} SefhOh^,V  
@M4c/k}  
Shell排序: y1%OH#:duD  
|kPgXq6  
package org.rut.util.algorithm.support; JR.)CzC  
-(:T&rfTp  
import org.rut.util.algorithm.SortUtil; v.Bwg 7R3  
C?gqX0[ q  
/** HJ 7A/XW  
* @author treeroot rCDt9o>  
* @since 2006-2-2 18rV Acj  
* @version 1.0 Y:TfD{Xgc  
*/ sT2`y$ '  
public class ShellSort implements SortUtil.Sort{ B+Qf? 1f  
Et N,  
/* (non-Javadoc) :5%98V>02  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #C&';HB;y  
*/ s_NY#MPz[  
public void sort(int[] data) { Q ^2dZXk~  
for(int i=data.length/2;i>2;i/=2){ O|8@cO  
for(int j=0;j insertSort(data,j,i); Rh^@1{yr  
} 7wh4~  
} |> STb\  
insertSort(data,0,1); 94#,dA,M  
} M^:JhX{  
B.5+!z&7  
/** e3SnC:OWf  
* @param data Wn@oG@}~  
* @param j 5WHz_'c  
* @param i >2{Y5__+e  
*/ q@bye4Ry%W  
private void insertSort(int[] data, int start, int inc) { $\J5l$tU  
int temp; %akW43cE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GuR^L@+ -.  
} PzSL E>Q  
} {TNORbZz  
} _`? cBu`  
 (yP1}?  
} _dd! nU\A|  
.>R`#@+I  
快速排序: 8)9-*Bzj   
TS6xF?  
package org.rut.util.algorithm.support; .4%z$(+6  
3(V0,L'1  
import org.rut.util.algorithm.SortUtil; qo3+=*"V  
_{k*JT2  
/** <jV,VKL#  
* @author treeroot QNx]8r  
* @since 2006-2-2 ]Wkgpfd56  
* @version 1.0 RQ8d1US  
*/ yR>P  
public class QuickSort implements SortUtil.Sort{ j_so s%-  
g]vB\5uA:  
/* (non-Javadoc)  N~$>| gn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y`j$7!j  
*/ L'{W|Xb+  
public void sort(int[] data) { Qpmq@iL  
quickSort(data,0,data.length-1); 0o>C, `  
} .S 54:vs  
private void quickSort(int[] data,int i,int j){ ]?VVwft  
int pivotIndex=(i+j)/2; m* _X PY  
file://swap rk1,LsZVS  
SortUtil.swap(data,pivotIndex,j); #E!^oZm<Z  
%oa@2qJ^  
int k=partition(data,i-1,j,data[j]); WBWW7HK  
SortUtil.swap(data,k,j); ]?=87w  
if((k-i)>1) quickSort(data,i,k-1); " 7^nRJy  
if((j-k)>1) quickSort(data,k+1,j); p\ =T#lb  
*xNc^ &.  
} -8qCCV&1i  
/** 1}\p:`  
* @param data <Tgy$Hm  
* @param i ulsU~WW7r  
* @param j 9{;L7`<  
* @return #8et91qw  
*/ L/:l>Ko>7  
private int partition(int[] data, int l, int r,int pivot) { DW7E ]o  
do{ doL-G?8B  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Zu|NF uFI  
SortUtil.swap(data,l,r); J;_4 3eS  
} L&kCI`Tb  
while(l SortUtil.swap(data,l,r); HN5661;8  
return l; ;"Gy5  
} pCIS8 2L  
@)h>vg  
} Yg.[R] UC  
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改进后的快速排序: 0}<blU  
Yt#; +*d5  
package org.rut.util.algorithm.support; aDRcVA$*  
x[{\Aw>$.  
import org.rut.util.algorithm.SortUtil; : b`N(]  
O`y3H lc  
/** GLO3v. n;  
* @author treeroot _:9}RT?  
* @since 2006-2-2 P  y v>  
* @version 1.0 v>`Fo[c  
*/ 0`S{>G  
public class ImprovedQuickSort implements SortUtil.Sort { *MmH{!=  
=OO4C  
private static int MAX_STACK_SIZE=4096; }lp37,  
private static int THRESHOLD=10; ^~V2xCu!  
/* (non-Javadoc) Ds(Z.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KuJ9bn{u!C  
*/ Cik1~5iF  
public void sort(int[] data) { As46:<!2  
int[] stack=new int[MAX_STACK_SIZE]; }BC%(ZH6  
*w@ 1@6?j  
int top=-1; Cqnuf5e>L  
int pivot; yq ;[1O_9C  
int pivotIndex,l,r; 1=J& ^O{W  
e7GYz7  
stack[++top]=0; #[jS&rr(  
stack[++top]=data.length-1; rB".!b  
~o_JZ:  
while(top>0){ L-`V^{R]  
int j=stack[top--]; 4ekwmw(ox  
int i=stack[top--]; gNW+Dq|X%  
q~9-A+n  
pivotIndex=(i+j)/2; kV1L.Xg  
pivot=data[pivotIndex]; [voZ=+/  
~Fh+y+g?  
SortUtil.swap(data,pivotIndex,j); b_TI_  
F62 uDyY  
file://partition `]W9Fj<1j  
l=i-1; :-jbIpj'  
r=j; qj~=qV0p  
do{ Q8`V0E\~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7vZO;FGtG  
SortUtil.swap(data,l,r); \Vx^u}3O  
} y\_+,G0  
while(l SortUtil.swap(data,l,r); #@DJf  
SortUtil.swap(data,l,j); TQck$&  
!nl-}P,  
if((l-i)>THRESHOLD){ 9 3)fC  
stack[++top]=i; ~!Sd|e:4  
stack[++top]=l-1; 2*75*EQCH  
} ) Z3KO  
if((j-l)>THRESHOLD){ EmT_T 3v  
stack[++top]=l+1; Rr [_t FM  
stack[++top]=j; YtvDayR>  
} 01o<eZ,  
yP3I^>AZ3  
} e;XRH<LhAU  
file://new InsertSort().sort(data); m OUO)[6y  
insertSort(data); H Y5R  
} }o:LwxNO  
/** `W1uU=c  
* @param data 0M;g&&mF  
*/ >s/_B//[  
private void insertSort(int[] data) { wuXQa wo  
int temp; H8w[{'Mei  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S~:uOm2t\  
} Ew0)MZ.#  
} uEb:uENk'(  
} V7U*09 0*5  
yJ!26  
} &UH0Tw4   
'sI ne>  
归并排序: 8WV5'cX  
w98M #GqV  
package org.rut.util.algorithm.support; VX8rM!3  
1_{e*=/y  
import org.rut.util.algorithm.SortUtil; H4`>B>\  
\Ebh6SRp\  
/** b|AjB:G  
* @author treeroot 'sZGLgT;m  
* @since 2006-2-2 -KC@M  
* @version 1.0 By6O@ .\V  
*/ .iR<5.  
public class MergeSort implements SortUtil.Sort{ j>8ubA  
*e [*  
/* (non-Javadoc) (km $qX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZ!kVrmg&  
*/ {,5 .svO  
public void sort(int[] data) { Y}BP ]#1  
int[] temp=new int[data.length]; +PE-j| D  
mergeSort(data,temp,0,data.length-1); BC!) g+8  
} C _he=SV  
VB905%  
private void mergeSort(int[] data,int[] temp,int l,int r){ F#|y,<}<  
int mid=(l+r)/2; J=Kv-@I>E  
if(l==r) return ; Mw,]Pt6~i  
mergeSort(data,temp,l,mid); %pjY^tM/  
mergeSort(data,temp,mid+1,r); @ ,oc%m  
for(int i=l;i<=r;i++){ fLs>|Rh  
temp=data; ]*zG*.C  
} IN3-ZNx  
int i1=l; 1p~ORQ  
int i2=mid+1; nmn/4>  
for(int cur=l;cur<=r;cur++){  GpTZp#~;  
if(i1==mid+1) .$p eq  
data[cur]=temp[i2++]; @$kO7k0{g  
else if(i2>r) \2+ngq)  
data[cur]=temp[i1++]; CRCy)AS,t  
else if(temp[i1] data[cur]=temp[i1++]; uq[5 om"  
else .Bkfe{^  
data[cur]=temp[i2++]; wg[ +NWJ  
} L *\[;.mk  
} 9j^rFG!n  
CC^]Y.9  
} 9LPXhxNwB  
g~-IT&O  
改进后的归并排序: }ACg#;>/+  
X,+a 6F  
package org.rut.util.algorithm.support; qQ]fM$!  
~m<K5K6 V  
import org.rut.util.algorithm.SortUtil; (t3gNin  
H.iCYD_=  
/** > A@yF?  
* @author treeroot f {2UL ?y  
* @since 2006-2-2 +a,#BSt  
* @version 1.0 #QsJr_=  
*/ Hc8^w6S1@  
public class ImprovedMergeSort implements SortUtil.Sort { u= dj3q  
&bJBsd@Os  
private static final int THRESHOLD = 10; 5q@s6_"{  
eb}XooX  
/* PdVY tK%  
* (non-Javadoc) M*n94L=Sg&  
* ;\}d QsX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6@lZVM)E  
*/ VTR4uT-  
public void sort(int[] data) { z l`m1k-X  
int[] temp=new int[data.length]; ,#BD/dF  
mergeSort(data,temp,0,data.length-1); sK W~+ ]  
} T]Q4=xsv  
*6<4ECa7C  
private void mergeSort(int[] data, int[] temp, int l, int r) { ).GM 0-y  
int i, j, k; whe%o  
int mid = (l + r) / 2; eK(k;$4\^Y  
if (l == r) c]1AM)xo  
return; l #C<bDw  
if ((mid - l) >= THRESHOLD) 1F>8#+B/W  
mergeSort(data, temp, l, mid); wKdWE`|y  
else 6K7lQ!#}Q  
insertSort(data, l, mid - l + 1); h3E}Sa(MQ:  
if ((r - mid) > THRESHOLD) lGK7XAx,  
mergeSort(data, temp, mid + 1, r);  7Oe$Ou  
else z7BFkZ6+  
insertSort(data, mid + 1, r - mid); SN")u  
^& *;]S`  
for (i = l; i <= mid; i++) { \c{sG\ >  
temp = data; oH4zW5  
} /+B6oE>8  
for (j = 1; j <= r - mid; j++) { MV3K'<Y  
temp[r - j + 1] = data[j + mid]; kz}Bc F  
} )$1j"mV  
int a = temp[l]; s+_8U}R  
int b = temp[r]; J*K=tA  
for (i = l, j = r, k = l; k <= r; k++) { -]}#Z:&  
if (a < b) { lmUCrs37  
data[k] = temp[i++]; 5`&@3 m9/  
a = temp; f'"PQr^9  
} else { /T  {R\  
data[k] = temp[j--]; ~C>;0a;<:  
b = temp[j]; W\0u[IV.x  
} ' xaPahx;  
} %j@/Tx/  
} *qL'WrB1  
M`Wk@t6>  
/** P()n=&XO6  
* @param data yYe>a^r4R  
* @param l ^^ SMr l  
* @param i dg*xo9Xi`  
*/ x]hG2on!  
private void insertSort(int[] data, int start, int len) { qmPu D/ c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )gU:Up24|"  
} +-TEB  
} 3NZK$d=4  
} %*<Wf4P"  
} CU c,  
"WmsBdO  
堆排序: '-~J.8-</  
w AdaP9h  
package org.rut.util.algorithm.support; Z= -fL  
p|qLr9\A  
import org.rut.util.algorithm.SortUtil; UWqiA`,  
]X7_ji(l,  
/** .i?{h/9y  
* @author treeroot N&G(`]  
* @since 2006-2-2 k[pk R{e  
* @version 1.0 *'-C/  
*/ ;#Qv )kS*  
public class HeapSort implements SortUtil.Sort{ bhg6p$411  
6Rif&W.xy  
/* (non-Javadoc) 4/\Ynb.L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l| \ -d  
*/ txMC^-J2l  
public void sort(int[] data) { 9' H\-  
MaxHeap h=new MaxHeap(); o ,_F;ZhE  
h.init(data); WFFd3TN%<  
for(int i=0;i h.remove(); pcOKC0b.  
System.arraycopy(h.queue,1,data,0,data.length); ZF#lh]  
} e{4e<hd  
d6m&nj  
private static class MaxHeap{ 1W0[|Hf2v*  
;*nzb!u\\  
void init(int[] data){ #@V<{/;49  
this.queue=new int[data.length+1]; .2rpQa/h  
for(int i=0;i queue[++size]=data; ;sUvY*Bcm  
fixUp(size); yO\bVu5V  
} #jxPh!%9  
} J.g6<n  
x6\VIP"9L  
private int size=0; is%ef  
n^55G>"0|  
private int[] queue; 'tQp&p j  
e<A>??h^  
public int get() { N48X[Q*  
return queue[1]; k $ SMQ6  
} v3n T@r a'  
KL(s Vj^e  
public void remove() { >x~Qa@s;  
SortUtil.swap(queue,1,size--); 0&kmP '  
fixDown(1); /{[tU-}qJ  
} hCX/k<}I  
file://fixdown ?mVSc/  
private void fixDown(int k) { u]9 #d^%V  
int j; o?= &kx  
while ((j = k << 1) <= size) { Jfv'M<I  
if (j < size %26amp;%26amp; queue[j] j++; qM Qu!%o  
if (queue[k]>queue[j]) file://不用交换 "~Kph0-  
break; >wYmx4W>  
SortUtil.swap(queue,j,k); UT 7'-  
k = j; S5L0[SZ$!  
} #+h#b%8  
} s nNd7v.U6  
private void fixUp(int k) { 3:sx%Ci/2  
while (k > 1) { @b5$WKPX  
int j = k >> 1; Y@Ry oJ  
if (queue[j]>queue[k]) t!FC)iY  
break; ;3Z?MQe"NQ  
SortUtil.swap(queue,j,k); ^x( s !4d]  
k = j; I&^hG\D  
}  l]   
} X*Q<REDB  
u Vv %k5  
} G_k_qP^:  
z -]ND  
} hVZS6gU,x  
7a/ BS(kq<  
SortUtil: &u<%%b|  
d?/g5[  
package org.rut.util.algorithm; pma=*  
R$eEW"]  
import org.rut.util.algorithm.support.BubbleSort; 7coVl$_Zl  
import org.rut.util.algorithm.support.HeapSort; zqXDD; w3  
import org.rut.util.algorithm.support.ImprovedMergeSort; r#}o +3*  
import org.rut.util.algorithm.support.ImprovedQuickSort;  = ~*Vfx  
import org.rut.util.algorithm.support.InsertSort; u<Ch]m+  
import org.rut.util.algorithm.support.MergeSort; _3g!_  
import org.rut.util.algorithm.support.QuickSort; "-IF_Hid  
import org.rut.util.algorithm.support.SelectionSort; .%0a  
import org.rut.util.algorithm.support.ShellSort; olHmRJ  
NQOf\.#g  
/** (\ |Go-2G  
* @author treeroot rof9Rxxe-  
* @since 2006-2-2  ME5M;bz(  
* @version 1.0 PyQ\O*  
*/ G ,`]2'(@  
public class SortUtil { c[vFh0s"m  
public final static int INSERT = 1; ?l|&JgJ$  
public final static int BUBBLE = 2; v(uNqX.BC  
public final static int SELECTION = 3; @y eAM7  
public final static int SHELL = 4; \^'-=8<*>  
public final static int QUICK = 5; t`eIkq|NxI  
public final static int IMPROVED_QUICK = 6; T$DFTr\\  
public final static int MERGE = 7; :;]O;RXt  
public final static int IMPROVED_MERGE = 8; r'*#i>PkQD  
public final static int HEAP = 9; L?Ih;  
V72?E%d0  
public static void sort(int[] data) { #2*R0_b  
sort(data, IMPROVED_QUICK); /p}pdXS  
} Y$ KR\ m  
private static String[] name={ =|c7#GaiF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (@* %moo  
}; [KW)z#`*  
e?GzvM'2  
private static Sort[] impl=new Sort[]{ ^>fr+3a"P  
new InsertSort(), 3@0!]z^W  
new BubbleSort(), *^Z -4  
new SelectionSort(), GJF ,w{J  
new ShellSort(), y"_rDj`  
new QuickSort(), O^3XhTW^\~  
new ImprovedQuickSort(), aOUTKyR ~  
new MergeSort(), *iSE)[W  
new ImprovedMergeSort(), $>wN:uN(  
new HeapSort() + :b"0pu-H  
}; '+GYw$  
#~r+Z[(,p  
public static String toString(int algorithm){ F}B2nL&  
return name[algorithm-1]; {X nBj}C  
} <#./q LSR  
3CSwcD  
public static void sort(int[] data, int algorithm) { A(+V{1 L'  
impl[algorithm-1].sort(data); Hm~.u.)\.  
} iQiXwEAi[  
;hd%w mE  
public static interface Sort { +.u HY`A  
public void sort(int[] data);  \5HVX/  
} (;N#Gqb6l  
=ATQ2\T$m  
public static void swap(int[] data, int i, int j) { \M Av's4b@  
int temp = data; {Q^ -  
data = data[j]; 83)m#  
data[j] = temp; $?OQtz@  
} #zb67mg~  
} M2qor.d  
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