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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。 T[;; 9z  
插入排序: }zFf0.82  
]~-*hOcQ4  
package org.rut.util.algorithm.support; x\hWyY6J[  
5@P%iBA4(3  
import org.rut.util.algorithm.SortUtil; d2rL 8jW  
/** )K~w'TUr  
* @author treeroot gmh5 %2M  
* @since 2006-2-2 <B6[i*&  
* @version 1.0 6M ^IwE  
*/ (1CJw:  
public class InsertSort implements SortUtil.Sort{ t5.`! 3EO  
55.;+B5L *  
/* (non-Javadoc) L#D9@V'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Go0}'*%  
*/ .xO _E1Ku;  
public void sort(int[] data) { 3bC+Mco  
int temp; 1Cm~X$S.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bpCNho$  
} R A:jzht  
} Z@3l%p6V  
} OL3UgepF  
Lf. 1>s  
} x(8n 9Q>  
-hWC_X:9jP  
冒泡排序: ?GdsOg^  
e}A&V+  
package org.rut.util.algorithm.support; fb .J$fX  
#,L~w  
import org.rut.util.algorithm.SortUtil; +$47v$p  
|; $Bb866/  
/** DkgUvn/S  
* @author treeroot 9Bz0MUbrLl  
* @since 2006-2-2 62[8xn=(%  
* @version 1.0 y4@gGC=  
*/ |uI?ySF  
public class BubbleSort implements SortUtil.Sort{ k=[pm5ZvT~  
fW?sYC'  
/* (non-Javadoc) -DP*q3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XphE loL  
*/ p3c"ZPO~z  
public void sort(int[] data) { qI%&ay"/  
int temp; >"v9iT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3JO]f5  
if(data[j] SortUtil.swap(data,j,j-1); h >-'-Hx+  
} ^~$\ g]  
} E{4 e<%Y,  
} _X4!xbP  
} 7(bQ}mHl\  
F;8*H1  
} h7]EB!D\A  
5.vG^T0w  
选择排序: |a-fE]{7  
Fv8f+)k)Z~  
package org.rut.util.algorithm.support; DkDoA;m  
p@~ic#X  
import org.rut.util.algorithm.SortUtil; nirDMw[  
u.,Q4u|!  
/** 0 Y>M=|  
* @author treeroot *27*>W1  
* @since 2006-2-2 o(!@7Lqq  
* @version 1.0 k()$:-V  
*/ zF`3 gl.  
public class SelectionSort implements SortUtil.Sort { u5B:^.:p  
7b[wu~'( n  
/* jZteooJG|  
* (non-Javadoc) }!p`1]gem  
* [;A[.&6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &c>?~-!W  
*/ = &tmP  
public void sort(int[] data) { >6<q8{*  
int temp; d\]Yk]r  
for (int i = 0; i < data.length; i++) { T/pqSmVpM  
int lowIndex = i; ^7^N}x@  
for (int j = data.length - 1; j > i; j--) { W3H+.E  
if (data[j] < data[lowIndex]) { t `kui.  
lowIndex = j; KC`q#&dt  
} G2Vv i[c  
} eJ0?=u!x  
SortUtil.swap(data,i,lowIndex); ^uBxgWIC  
} i,I B!x  
} b2,!g }I  
up>c$jJ  
} Hc^W%t~  
-=`#fDvBn  
Shell排序: n/~A`%E@  
) ZfdQ3  
package org.rut.util.algorithm.support; .8(OT./  
4_A0rveP  
import org.rut.util.algorithm.SortUtil; U;N:j8  
#Tw@wfaq)  
/** T*g:# ^4  
* @author treeroot `d7n?|pD  
* @since 2006-2-2 ",6M)3{|c  
* @version 1.0 -m *Sq  
*/ >P6BW  
public class ShellSort implements SortUtil.Sort{ oVFnl A  
}}v9 `F  
/* (non-Javadoc) ,R%q}IH#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F8-?dpf'  
*/ .p0Clr!  
public void sort(int[] data) { *(C(tPhC  
for(int i=data.length/2;i>2;i/=2){ ~t9tnLc$  
for(int j=0;j insertSort(data,j,i); (e(:P~Ry  
} fU=B4V4@  
} >B]'fUt5a  
insertSort(data,0,1); .X# `k  
} 3k#~yaoI  
 (x/k.&  
/** k0Ol*L!p  
* @param data zR2B- &]H  
* @param j ,eTU/Q>{,&  
* @param i (L^]Lk x)  
*/ :oJ=iB'Zc  
private void insertSort(int[] data, int start, int inc) { Z#rB}  
int temp; th;{V%:LW  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *S2ypzwRZ,  
} ;L']e"G  
} 0u\GO;  
} 'Lu__NfN  
.l.a(_R  
} d_IAs  
&mb{.=  
快速排序: Y "/]|'p  
~ 4kc/a  
package org.rut.util.algorithm.support; #B4%|v;`E?  
T}8Y6N<\m  
import org.rut.util.algorithm.SortUtil; <J^MCqp!v  
O)[1x4U  
/** vM5k_D  
* @author treeroot 6I%5Q4Ll  
* @since 2006-2-2 e)(wss+d7P  
* @version 1.0 O#F4WWF  
*/ |UX(+; n  
public class QuickSort implements SortUtil.Sort{ @)fd}tV  
E{|W(z,  
/* (non-Javadoc) ,^C--tgZJg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k |eBJ%  
*/ 2AMo:Jqv  
public void sort(int[] data) { u:=7l  
quickSort(data,0,data.length-1); q^Y-}=w  
} 'Iw NTM  
private void quickSort(int[] data,int i,int j){ u fw]=h)  
int pivotIndex=(i+j)/2; 9Gnc9_]I;W  
file://swap #`)(e JF  
SortUtil.swap(data,pivotIndex,j); >Wv;R2|  
A<??T[  
int k=partition(data,i-1,j,data[j]); ~^1{B\I  
SortUtil.swap(data,k,j); CLUW!F  
if((k-i)>1) quickSort(data,i,k-1); c-(UhN3WG  
if((j-k)>1) quickSort(data,k+1,j); ]7RD"}  
d8c=L8~jt  
} R^Y <RI  
/** B!?%O  
* @param data 8|\8O@  
* @param i ]?!mS[X  
* @param j K1M%!JKh)x  
* @return TA4!$7b$  
*/ 2Eu`u!jhx  
private int partition(int[] data, int l, int r,int pivot) { uC(V  
do{ %-1O.Q|f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y2~nBb  
SortUtil.swap(data,l,r); gcl5jB5)>  
} @X#F3;  
while(l SortUtil.swap(data,l,r); }f6HYU  
return l; oYH^_V  
} T7hcnF$  
v@ lM3_rbO  
} ZzJ?L4J5v  
pSdI/Vj'=  
改进后的快速排序: H _zo1AW  
ddJe=PUb  
package org.rut.util.algorithm.support; /7Cc#P6  
K3#@SY j  
import org.rut.util.algorithm.SortUtil; 8|l\E VV6  
L?mrba y  
/** JehrDC2N  
* @author treeroot 7`DBS^O]dG  
* @since 2006-2-2 $#9;)8J  
* @version 1.0 .uMn0PE   
*/ e?8FN. q  
public class ImprovedQuickSort implements SortUtil.Sort { $Avjnm  
z`f($t[  
private static int MAX_STACK_SIZE=4096; l)1r+@) \  
private static int THRESHOLD=10; /rnu<Q#iH  
/* (non-Javadoc) f'EuY17w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0dE@c./R i  
*/ YUtC.TR1  
public void sort(int[] data) { CVL3VT1j0  
int[] stack=new int[MAX_STACK_SIZE]; 4NheWM6  
svcK?^ HTe  
int top=-1; 5YeM%%-S  
int pivot; 'h|DO/X~L  
int pivotIndex,l,r; "Q@ronP(~  
+M\`#i\g>  
stack[++top]=0; 7QiIiWqIWC  
stack[++top]=data.length-1; [+n*~  
MOQ*]fV:  
while(top>0){ e D?tLj  
int j=stack[top--]; oAODp!_c  
int i=stack[top--]; OEA&~4&{7  
'vbsvT  
pivotIndex=(i+j)/2; }ppN k:B  
pivot=data[pivotIndex]; <Tzrj1"Q3  
D9^h; 8  
SortUtil.swap(data,pivotIndex,j); n|Q@UPb/=  
`yrB->|vG  
file://partition p6>Svcc  
l=i-1; 6t[+pL\b  
r=j; 7)`nD<j 5  
do{  mHdA2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Lo{ E:5q  
SortUtil.swap(data,l,r); G|!Tj X7s  
} |"ls\ 7  
while(l SortUtil.swap(data,l,r); CkOz  
SortUtil.swap(data,l,j); 6-N?mSQU  
!Xf5e*1IS  
if((l-i)>THRESHOLD){ a*lh)l<KV  
stack[++top]=i; .o(fe\KHf  
stack[++top]=l-1; Gp?a(-K5  
} ?+@n3]`0  
if((j-l)>THRESHOLD){ |W,& Hl7  
stack[++top]=l+1; 4;e5H_}Oo  
stack[++top]=j; sJL&:!}V>  
} 4tRYw0f47  
`i3NG1 v0  
} +~m46eI  
file://new InsertSort().sort(data); I8hz(2jI  
insertSort(data); I0D(F i  
} 4KhV|#-;k  
/** _mqL8ho  
* @param data 'f!8DGix  
*/ V#2+"(7h  
private void insertSort(int[] data) { e24WW^S  
int temp; 9UdM`v)(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }aa'\8  
} k9sh @ENy  
} > kG GR  
} T"{>t  
ugdQAg  
} ;#g"(  
+ [iQLM?zo  
归并排序: 2e+UM$  
pnl{&<$C%C  
package org.rut.util.algorithm.support; 9vuyv*-}e  
[_R~%Yh+'E  
import org.rut.util.algorithm.SortUtil; OcR$zlgs[v  
%<\vGqsM  
/** 9'fQHwsJ  
* @author treeroot q}i]'7  
* @since 2006-2-2 !a{^=#qq&I  
* @version 1.0 nHM~  
*/ ? ^0:3$La  
public class MergeSort implements SortUtil.Sort{ k|e7a2Wwt  
]~Rho_mq#  
/* (non-Javadoc) R{C(K(5/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S] }nm  
*/ hi_NOx  
public void sort(int[] data) { _F6OM5F"N  
int[] temp=new int[data.length]; 9g9HlB&Ze  
mergeSort(data,temp,0,data.length-1); u0JB\)(-/h  
} A=$04<nP8!  
A!od9W6  
private void mergeSort(int[] data,int[] temp,int l,int r){ TJ10s%,V  
int mid=(l+r)/2; Gt\lFQ  
if(l==r) return ; { }:#G  
mergeSort(data,temp,l,mid); 5#HW2"7  
mergeSort(data,temp,mid+1,r); 7BE>RE=)  
for(int i=l;i<=r;i++){ {j{u6i  
temp=data; 8v:T.o;<  
} bg!/%[ {M  
int i1=l; ~ 8PZ5;g  
int i2=mid+1; 2] z 8: a  
for(int cur=l;cur<=r;cur++){ M92dZ1+6  
if(i1==mid+1) GoJ.&aH $  
data[cur]=temp[i2++]; 6LvW?z(J  
else if(i2>r) QJZK|*  
data[cur]=temp[i1++]; qLO4#CKCL6  
else if(temp[i1] data[cur]=temp[i1++]; +jAGGv^)  
else fW{(lPx  
data[cur]=temp[i2++]; {0L1X6eg  
}  `xKp%9  
} T.])diuvj-  
6Pz4\uE=  
} 'K$[^V  
R"-mKT}  
改进后的归并排序: ^PDJ0k/u1  
|J1$= s  
package org.rut.util.algorithm.support; vHgi <@u  
5[8xV%>;  
import org.rut.util.algorithm.SortUtil; Lz |? ek7Q  
NG=@ -eu  
/** zN[hkmh  
* @author treeroot +! ]zA4x  
* @since 2006-2-2 ny]?I  
* @version 1.0 } +TORR?  
*/ )cX*I gO  
public class ImprovedMergeSort implements SortUtil.Sort { ~IY%  
Z&G+bdA>,  
private static final int THRESHOLD = 10; P9/q|>F  
>1.X*gi?-  
/* K='z G*$l  
* (non-Javadoc) Z]A{ d[  
* U#0Q)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zUt' QH7E.  
*/ sG(~^hJ_  
public void sort(int[] data) { H[NSqu.s  
int[] temp=new int[data.length]; a1g,@0s  
mergeSort(data,temp,0,data.length-1); 5 )A1\  
} jrCfWa}z  
V)3KS-  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5^}\4.eXo  
int i, j, k; -zCH**y%1  
int mid = (l + r) / 2; !`M,XSp(  
if (l == r) -{KQr1{5UM  
return; B*eC3ok3z  
if ((mid - l) >= THRESHOLD) kS%Ydy#:'  
mergeSort(data, temp, l, mid); Oz w.siD  
else l94b^W}1)W  
insertSort(data, l, mid - l + 1); mbKZJ{|4s  
if ((r - mid) > THRESHOLD) kq?Ms|h  
mergeSort(data, temp, mid + 1, r); 0B[="rTS7#  
else v|Pv 03%?7  
insertSort(data, mid + 1, r - mid); bYcV$KJk  
V"[g.%%Y  
for (i = l; i <= mid; i++) {  Z< 1  
temp = data; }V'} E\\  
} $1SPy|y  
for (j = 1; j <= r - mid; j++) { *-#&K\  
temp[r - j + 1] = data[j + mid]; %7QV&[4!  
} 'Y?"{HZ  
int a = temp[l]; ~b(i&DVK  
int b = temp[r]; 3(``#7  
for (i = l, j = r, k = l; k <= r; k++) { QpF;:YX^3  
if (a < b) { .14~J6  
data[k] = temp[i++]; ajve~8/&  
a = temp; M#ZcY  
} else { T*I{WW  
data[k] = temp[j--]; .L+6 $8m  
b = temp[j];  nI[os  
} tCw<Ip  
} y3vdUauOn  
} dR K?~1  
bes<qy  
/** Zj_b>O-V  
* @param data # '=a=8-$  
* @param l jY  &k  
* @param i uY0lR:|  
*/ T!uM+6|Y  
private void insertSort(int[] data, int start, int len) { ]yV!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )"qa kT  
} c& < Fr[AK  
} dLH(D: `  
} Upx G@b  
} O],T,Z?z  
LhN|1f:9:  
堆排序: XYQ/^SI!:  
wDw[RW3  
package org.rut.util.algorithm.support; N[?N5~jG  
OwuE~K7b{  
import org.rut.util.algorithm.SortUtil; aasoW\UG  
5b5x!do  
/** |Yx~;q:  
* @author treeroot +u.1 ;qF  
* @since 2006-2-2 {GvJZ!,RCg  
* @version 1.0 SfA\}@3  
*/ \ S_Ou   
public class HeapSort implements SortUtil.Sort{ G3t xj  
_ "E$v&_  
/* (non-Javadoc) {M3qLf~z#C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K~uXO  
*/ !H#bJTXB  
public void sort(int[] data) { O3;u G.:1  
MaxHeap h=new MaxHeap(); lVd^ ^T*fh  
h.init(data); 84$nT>c  
for(int i=0;i h.remove(); ?xA:@:l/  
System.arraycopy(h.queue,1,data,0,data.length); XFg 9P}"  
} :X"?kK0V  
E~,F  
private static class MaxHeap{ Q[Z8ok  
}I2wjO  
void init(int[] data){ &)2i[X  
this.queue=new int[data.length+1]; 0mpX)S  
for(int i=0;i queue[++size]=data; #akpXdXs  
fixUp(size); -N6f1>}pE  
} ; a/X<  
} }q`ts=dlGt  
+00b)TF  
private int size=0; UMv.{iEj  
Uq[>_"}  
private int[] queue; uyO/55;HO  
f0A{W/0n  
public int get() { 'SO %)B  
return queue[1]; :8I9\eet3  
} SII;n2[Ze  
,NOsFO-`<  
public void remove() { I?]ohG K  
SortUtil.swap(queue,1,size--); Ac96 [  
fixDown(1); ^pxX]G]  
} v5/~-uRL%  
file://fixdown )}g(b=  
private void fixDown(int k) { yZ @"\Z!  
int j; Ut*`:]la  
while ((j = k << 1) <= size) { =FlDb 5t{  
if (j < size %26amp;%26amp; queue[j] j++; VdPtPq1  
if (queue[k]>queue[j]) file://不用交换 dFRsm0T  
break; rr+|Zt Y  
SortUtil.swap(queue,j,k); VQ"hUX8  
k = j; \}+_Fo/  
} %!]@J[*1  
} @V(*65b2  
private void fixUp(int k) { 6 rh5h:  
while (k > 1) { @u.58H& }R  
int j = k >> 1; !4]T XH0f  
if (queue[j]>queue[k]) cT<1V!L4  
break; \@WDV  
SortUtil.swap(queue,j,k); |pm7_[  
k = j; Bs13^^hu  
} g=39C>  
} 4 <9=5q]  
*,3SGcYdJj  
} ,qA(\[  
< nXL  
} u0 P|0\  
a<@1 -j<  
SortUtil: .Fs7z7?Y  
2n3W=dF  
package org.rut.util.algorithm; }]e-{C}  
? Fi=P#  
import org.rut.util.algorithm.support.BubbleSort; ]|!OP  
import org.rut.util.algorithm.support.HeapSort; b+,' ;bW  
import org.rut.util.algorithm.support.ImprovedMergeSort; Mxe}B'  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5G::wuxk  
import org.rut.util.algorithm.support.InsertSort; S-P/+K6  
import org.rut.util.algorithm.support.MergeSort; ,">]`|?  
import org.rut.util.algorithm.support.QuickSort; 7_%"BVb"  
import org.rut.util.algorithm.support.SelectionSort; {`J)j6;  
import org.rut.util.algorithm.support.ShellSort; Hv!U| L  
/rM I"khB  
/** t'?.8}?)I&  
* @author treeroot PjZvQ\Z  
* @since 2006-2-2 ?<V?wsp  
* @version 1.0 io _1Y]N  
*/ -!q :p&c  
public class SortUtil { x8wD0D  
public final static int INSERT = 1; 8u"!dq  
public final static int BUBBLE = 2; Vc_'hz]Z  
public final static int SELECTION = 3; T~--92[  
public final static int SHELL = 4; R(('/JC  
public final static int QUICK = 5; Qi^Z11  
public final static int IMPROVED_QUICK = 6; <L`KzaA  
public final static int MERGE = 7; 4\y/'`xm)6  
public final static int IMPROVED_MERGE = 8; 2w59^"<,  
public final static int HEAP = 9; |s'Po^Sy  
&atuK*W>  
public static void sort(int[] data) { _  <WJ7  
sort(data, IMPROVED_QUICK); 2#P* ,  
} 3wOZ4<B  
private static String[] name={ ?6yjy<D)$e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z,Medw6[  
}; @Gk ILFN  
3_txg>P"  
private static Sort[] impl=new Sort[]{ 4~y(`\0?4  
new InsertSort(), tro7Di2Q  
new BubbleSort(), |*:'TKzNS  
new SelectionSort(), mX_a^_[G  
new ShellSort(), ^.KwcXr  
new QuickSort(), yGWxpzmRS  
new ImprovedQuickSort(), IT(lF  
new MergeSort(), m4aB*6<lq  
new ImprovedMergeSort(), ZZ k=E4aae  
new HeapSort() >{N9kW Y  
}; Kh,V.+7k  
J]v%q,"  
public static String toString(int algorithm){ O]lSWEe  
return name[algorithm-1]; e91aK  
} %JXE5l+pJ  
7{e% u#  
public static void sort(int[] data, int algorithm) { !>v2i"  
impl[algorithm-1].sort(data); {wO3<9  
} L0* nm.1X  
~R_ztD+C(  
public static interface Sort { lV`Q{bd+  
public void sort(int[] data); H(bs$C4F  
} F5?m6`g?  
EKA#|^Q:NX  
public static void swap(int[] data, int i, int j) { cVubb}ou  
int temp = data; Rec6c&5_  
data = data[j]; }v Z+A  
data[j] = temp; ' qWALu  
} m5L-67[sB  
} +g` 'J$  
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