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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。 %drJ p6n%  
插入排序: {G]?{c)"  
wGPotPdE2  
package org.rut.util.algorithm.support; EMLx?JnP  
osl=[pm  
import org.rut.util.algorithm.SortUtil; mA& =q_gS  
/** W. ^Ei\w/t  
* @author treeroot Cz_AJ-WR  
* @since 2006-2-2 /Zc#j^_  
* @version 1.0 2s 7mI'  
*/ e1Ob!N-  
public class InsertSort implements SortUtil.Sort{ ITONpg[f  
!g8*r"[UJ  
/* (non-Javadoc) \M9 h&I\7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (vKI1^,  
*/  }mKwFVZ  
public void sort(int[] data) { Zvxp%dES  
int temp; :/B:FY=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {VR`;  
} &.zj5*J  
} MEEAQd<*  
} RcQ>eZHl  
G+U3wF],  
} ~;[&K%n  
R2l[Q){!  
冒泡排序: rJ DnuR  
[[w2p  
package org.rut.util.algorithm.support; )R~aA#<>  
(^LS']ybc  
import org.rut.util.algorithm.SortUtil; 0Q'v HZ"  
& 1[y"S  
/** ]u+MTW;  
* @author treeroot m4@MxQm  
* @since 2006-2-2 /}=a{J  
* @version 1.0 4d0#86l~J/  
*/ tRteyNA  
public class BubbleSort implements SortUtil.Sort{ NvQ%J+  
.)7:=  
/* (non-Javadoc) LP9)zi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -ui< E?v  
*/ .]P2}w)x?  
public void sort(int[] data) { oU8>Llt=$  
int temp; u_LY\'n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 34ha26\np  
if(data[j] SortUtil.swap(data,j,j-1); c` , 2h#  
} O+_N!/  
} ZHCr2^w6  
} /PXioiGcs  
} Ea4_Qmn  
If;R?j0;Q  
} g`[`P@  
7S<UFj   
选择排序: j$vK<SF  
Ra[>P _  
package org.rut.util.algorithm.support; dx@QWTNE  
/THnfy \  
import org.rut.util.algorithm.SortUtil; rgqQxe=  
Iq^if>  
/** Hd%! Nt\u  
* @author treeroot 78 d_io}w  
* @since 2006-2-2 NG" yPn  
* @version 1.0 J B^Q\;$  
*/ $w)~xE5;  
public class SelectionSort implements SortUtil.Sort { WS:5MI,OL  
W`rMtzL5  
/* *"cD.)]#2  
* (non-Javadoc) R-  
* =1Z;Ma<;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WhFS2Jl0  
*/ \3zp)J  
public void sort(int[] data) { rQJ"&CapT  
int temp; K"\MU  
for (int i = 0; i < data.length; i++) { Hm fXe  
int lowIndex = i; wzh ]97b  
for (int j = data.length - 1; j > i; j--) { >.<ooWw  
if (data[j] < data[lowIndex]) { YTQps&mD.  
lowIndex = j; J-V49X#  
} _6MdF<Xb/  
} B[F-gq-  
SortUtil.swap(data,i,lowIndex); KzphNHd  
} ``u:lL  
} DI1(`y  
__I/F6{ 9V  
} J[@um:  
3F+Jdr'  
Shell排序: BAV>o|-K  
0y~<%`~  
package org.rut.util.algorithm.support; ,O]l~)sr|  
,%W<O.  
import org.rut.util.algorithm.SortUtil; XV>&F{  
inAAgW#s}  
/** =P`~t<ajB  
* @author treeroot \:v$ZEDJ>  
* @since 2006-2-2 c*;7yh&%  
* @version 1.0 %}&(h/= e  
*/ S&(^<gwl  
public class ShellSort implements SortUtil.Sort{ k1='c7s  
Y]N,.pv=  
/* (non-Javadoc) 33K*qaRAD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +}@ 8p[`)  
*/ J!TBREK  
public void sort(int[] data) { !MVj=(  
for(int i=data.length/2;i>2;i/=2){ p!zJ;rh)  
for(int j=0;j insertSort(data,j,i); g%a|q~)  
} |0.Xl+7  
} r-IT(DzkD  
insertSort(data,0,1); A}5fCx.{  
} "e6|"w@8  
iiG f'@/  
/** fD4ICO@  
* @param data 0Fw6Dq<8-!  
* @param j `f9gC3Hk  
* @param i ! bU\zH  
*/ Xsuwa-G!5~  
private void insertSort(int[] data, int start, int inc) { z0bJ?~w,  
int temp; iqwkARG"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ai"-w"  
} mC[UXN/  
} -*a?<ES`  
} MCc$TttaVz  
u~1o(Zn =  
} oVOm_N  
Zy0aJN>  
快速排序: +4qU>  
ZA(T  
package org.rut.util.algorithm.support; L}sx<=8.m  
g{:<2xI5P  
import org.rut.util.algorithm.SortUtil; RJ4. kt  
'+Xlw  
/** l=}~v  
* @author treeroot PdeBDFWD  
* @since 2006-2-2 Dyg?F )6  
* @version 1.0 831JwS R  
*/ ~1kXUWq3  
public class QuickSort implements SortUtil.Sort{ k2 Q qZxm!  
Ysi  g T  
/* (non-Javadoc) hBU\'.x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o0It82?RN  
*/ mXzrEI  
public void sort(int[] data) { %Ym^{N  
quickSort(data,0,data.length-1); o<i,*y88  
} fc_2D|  
private void quickSort(int[] data,int i,int j){ z=7|{G  
int pivotIndex=(i+j)/2; fJAnKUF)  
file://swap H1EDMhn/  
SortUtil.swap(data,pivotIndex,j); "v-(g9(  
!j:`7PT\  
int k=partition(data,i-1,j,data[j]); GV.A+u  
SortUtil.swap(data,k,j); I97yt[,Yy  
if((k-i)>1) quickSort(data,i,k-1); s{bdl[7  
if((j-k)>1) quickSort(data,k+1,j); (C;I*cv  
HQP}w%8x  
}  vZj`|  
/** h"+ `13  
* @param data MV>$BW  
* @param i *QGm/ /b  
* @param j 1O/ g&u  
* @return t.Nb? /  
*/ {eS|j=  
private int partition(int[] data, int l, int r,int pivot) { %?Y[Bk3p  
do{ PU<PhuMd  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z{6kWA3Kk  
SortUtil.swap(data,l,r); % ps$qB'  
} WjSc/3Qy  
while(l SortUtil.swap(data,l,r); "Z=5gj  
return l; &opd2  
} n(seNp%_  
*l&S-=]  
} eYX5(`c[  
ufV!+$C)is  
改进后的快速排序: m!tx(XsXU  
Z3TS,a1I4  
package org.rut.util.algorithm.support; Ev"|FTI/  
\55VqGyxu9  
import org.rut.util.algorithm.SortUtil; Vr[czfROz'  
k^"bLf(4  
/** \!]hU%Un  
* @author treeroot kX`[Y@nUN  
* @since 2006-2-2 q@hzo>[  
* @version 1.0 K14^JAdY/  
*/ M=qb^~ l  
public class ImprovedQuickSort implements SortUtil.Sort { ao_4mSB  
jnB~sbyA  
private static int MAX_STACK_SIZE=4096; EZ;"'4;W  
private static int THRESHOLD=10; WI> P-D  
/* (non-Javadoc) `o]g~AKX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C'yppl%  
*/ nrm+z"7  
public void sort(int[] data) { q#w8wH"  
int[] stack=new int[MAX_STACK_SIZE]; 39wa|:I  
Vwk#qgnX  
int top=-1; L"jY+{oLIJ  
int pivot; B.r4$:+jb2  
int pivotIndex,l,r; Ian[LbCWB  
~Nf})U  
stack[++top]=0; 66x?A0P  
stack[++top]=data.length-1; $$APgj"|<  
HB+|WW t>  
while(top>0){ _A13[Mt3  
int j=stack[top--]; xL|;VyD  
int i=stack[top--]; DGW+>\G  
NA3 \  
pivotIndex=(i+j)/2; 05yZad*  
pivot=data[pivotIndex]; )SryDRT  
xv{O^Ie+S  
SortUtil.swap(data,pivotIndex,j); !-`Cp3gqHr  
*]hBGr#6  
file://partition goat<\a  
l=i-1; m7EcnQf  
r=j; E%oY7.~-  
do{ 6DG@?O  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p'7*6bj1  
SortUtil.swap(data,l,r); e:H26SW  
} bXUy9 -L  
while(l SortUtil.swap(data,l,r); p G1WXbqW  
SortUtil.swap(data,l,j); h$eEn l}  
d8-A*W[  
if((l-i)>THRESHOLD){ /~*_x=p:  
stack[++top]=i; jZ`;Cy\<B  
stack[++top]=l-1; v>z tB,,9  
} 76hOB@  
if((j-l)>THRESHOLD){ 3 rLTF\  
stack[++top]=l+1; `w I/0  
stack[++top]=j; !Z VU,b>  
} _iNq"8>2  
kmzH'wktt  
} z'T) =ycT  
file://new InsertSort().sort(data); A_Frk'{qhB  
insertSort(data); .920{G?l5  
} bR@p<;G|  
/** 0TpK#OlI|c  
* @param data qC F5~;7  
*/ ][}0#'/mV  
private void insertSort(int[] data) { {*{Ox[Nh{  
int temp; Eu"_MgD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'y8]_K*  
} L "sO+4w  
} .bBdQpF-  
} |rmg#;/D  
{(r6e  
} cw iX8e"3  
45hF`b>%,  
归并排序: =zQN[  
%p%%~ewmx  
package org.rut.util.algorithm.support; Ft}@ 1w5  
{s.=)0V  
import org.rut.util.algorithm.SortUtil;  H"A7Zo  
%|s+jeUDn|  
/** RKPO#qju\F  
* @author treeroot Ua!aaq&  
* @since 2006-2-2 6@DF  
* @version 1.0 /Q,mJ.CnSR  
*/ J:V?EE,\-  
public class MergeSort implements SortUtil.Sort{ Sa2>`":d  
6{ =\7AY  
/* (non-Javadoc) /SYw;<=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bygx]RC[  
*/ <&C]s b  
public void sort(int[] data) { p K0"%eA  
int[] temp=new int[data.length];  *6q5S4 r  
mergeSort(data,temp,0,data.length-1); E>l~-PaZY  
} 9B;{]c  
oJN#C%r7  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7uzk p&+:  
int mid=(l+r)/2; v:H$<~)E|  
if(l==r) return ; |i++0BU  
mergeSort(data,temp,l,mid); Ub6jxib  
mergeSort(data,temp,mid+1,r); a+n0|CvF  
for(int i=l;i<=r;i++){ T=ev[ mS  
temp=data; W6Y]N/v3>  
} JtER_(.  
int i1=l; |\pbir  
int i2=mid+1; /Rl6g9}  
for(int cur=l;cur<=r;cur++){ 3Z1CWzq(  
if(i1==mid+1) p5G?N(l  
data[cur]=temp[i2++]; S]+ :{9d  
else if(i2>r) K6R.@BMN  
data[cur]=temp[i1++]; TYW&!sm  
else if(temp[i1] data[cur]=temp[i1++]; wmTb97o  
else .9wk@C(Eh_  
data[cur]=temp[i2++]; F6z%VWU  
} ~@}Bi@*  
} eio 4k-  
B {>7-0  
} rW$[DdFA5{  
s0vDHkf8  
改进后的归并排序: \-g)T}g,I  
.mR8q+I6  
package org.rut.util.algorithm.support; <7~'; K  
q<M2,YrbAI  
import org.rut.util.algorithm.SortUtil; WPQ fhr#|  
a |X a3E  
/** ui?  
* @author treeroot 4t=G   
* @since 2006-2-2 PUUwv_  
* @version 1.0 B6={&7U2  
*/ uA< n  
public class ImprovedMergeSort implements SortUtil.Sort { ez| )ph7  
]9^sa-8  
private static final int THRESHOLD = 10; ~sh`r{0  
1jcouD5?H  
/* }~L.qG  
* (non-Javadoc) {tWf  
*  qi^7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~A\GT$  
*/ 9iQq.$A.  
public void sort(int[] data) { F%RRd/'  
int[] temp=new int[data.length]; |!4K!_y  
mergeSort(data,temp,0,data.length-1); o4Om}]Ti  
} c24dSNJg,  
\2h!aRWR  
private void mergeSort(int[] data, int[] temp, int l, int r) { F1yqxWHeo  
int i, j, k; a^I\ /&aw'  
int mid = (l + r) / 2; aht[4(XH5  
if (l == r) cz8T  
return; {N+$Q'  
if ((mid - l) >= THRESHOLD) GB=X5<;  
mergeSort(data, temp, l, mid); /V'A%2Cl=T  
else HMNLa*CL'  
insertSort(data, l, mid - l + 1); 2fL;-\!y(  
if ((r - mid) > THRESHOLD) H*PSR  
mergeSort(data, temp, mid + 1, r); Y^wW2-,m  
else 8)_XJ"9)G  
insertSort(data, mid + 1, r - mid); bE !GJZ  
_z|65H  
for (i = l; i <= mid; i++) { JkbQyn  
temp = data; Yo6*C  
} |IzPgC  
for (j = 1; j <= r - mid; j++) { [<@.eH$hU/  
temp[r - j + 1] = data[j + mid]; + R~'7*EI  
} &OH={Au  
int a = temp[l]; Fww :$^_ k  
int b = temp[r]; W:pIPDx1=!  
for (i = l, j = r, k = l; k <= r; k++) { pOIJH =#  
if (a < b) { cQ R]le %(  
data[k] = temp[i++]; k5'Vy8q  
a = temp; s;ls qQk  
} else { o6.^*%kM'  
data[k] = temp[j--]; :74y!  
b = temp[j]; u0 `S5?  
} T4Pgbop  
} W')Yg5T  
} VY7[)  
wfLaRP  
/** 0x@6^ %^\  
* @param data *Q "wwpl?  
* @param l [1Qo#w1  
* @param i +nFu|qM}  
*/ <Z mg#  
private void insertSort(int[] data, int start, int len) { lR6@ xJd:@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qm/22:&v5  
} V_.5b&@  
} Q+{xZ'o"Z  
} A P?R"%  
} &w_j/nW^'  
tEvut=k'  
堆排序: *0Skd  
vApIHI?-  
package org.rut.util.algorithm.support; G[uK-U  
MP Y[X[  
import org.rut.util.algorithm.SortUtil; <L8'!q}  
oqO(PU  
/** @@Kp67Iv  
* @author treeroot 8V`WO6*  
* @since 2006-2-2 6d<r= C=  
* @version 1.0 aC8} d  
*/ C)ERUH2i  
public class HeapSort implements SortUtil.Sort{ YYBDRR"  
(c=6yV@  
/* (non-Javadoc) 2DrP"iGq5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z]_wjYn Z  
*/ 7x|9n  
public void sort(int[] data) { ?N*>*"  
MaxHeap h=new MaxHeap(); ?]_$Dcmx  
h.init(data); iL-(O;n  
for(int i=0;i h.remove(); vc;$-v$&  
System.arraycopy(h.queue,1,data,0,data.length); KQ!8ks]  
} <KL,G};0pm  
BYL)nCc  
private static class MaxHeap{ spH7 /5}  
U ]H#MiC!  
void init(int[] data){ ) j#`r/  
this.queue=new int[data.length+1]; FpmM63$VN[  
for(int i=0;i queue[++size]=data; 2*;~S4 4  
fixUp(size); *v^Jb/E315  
} 3nO]Ge"w'n  
} P64PPbP  
_Xe>V0   
private int size=0; un mJbY;t  
O:;w3u7;u  
private int[] queue; c_$=-Khk  
-P$PAg5"2  
public int get() { 'uS n}hm  
return queue[1]; )l C)@H}  
} O`IQ(,yef  
UNu#(nP  
public void remove() {  dVtG/0  
SortUtil.swap(queue,1,size--); 6_GhO@lOG  
fixDown(1); *5C7d*'  
} g[' ^L +hd  
file://fixdown qZ}^;)a^  
private void fixDown(int k) { vxBgGl  
int j; C!<Ou6}!b  
while ((j = k << 1) <= size) { H(ARw'M  
if (j < size %26amp;%26amp; queue[j] j++; )4e.k$X^  
if (queue[k]>queue[j]) file://不用交换 _YhES-Ff  
break; \h/H#j ZJ  
SortUtil.swap(queue,j,k); q_[o" wq/  
k = j; ]nn98y+  
} !Iy_UfW  
} V(I8=rVH  
private void fixUp(int k) { $Vg>I>i  
while (k > 1) { EU/C@B2*Dl  
int j = k >> 1; C_}]`[  
if (queue[j]>queue[k]) {H>gtpVy  
break; Uiw2oi&_  
SortUtil.swap(queue,j,k); HAdg/3Hw  
k = j; ?=sDM& '  
} l ^0@86  
} @Md/Q~>  
hR?{3d#x2  
} Mq156TL  
hn G Z=  
} e'NJnPO  
me$Z~/Akm  
SortUtil: AlaW=leTe  
5{X<y#vAC0  
package org.rut.util.algorithm; {UI+$/v#  
N)X3XTY  
import org.rut.util.algorithm.support.BubbleSort; xef% d G.  
import org.rut.util.algorithm.support.HeapSort; g wRZ%.Cn  
import org.rut.util.algorithm.support.ImprovedMergeSort; |tH4:%Q'  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q~ w|#  
import org.rut.util.algorithm.support.InsertSort; 0 1rK8jX  
import org.rut.util.algorithm.support.MergeSort; W' VslZG  
import org.rut.util.algorithm.support.QuickSort; tCH!my_  
import org.rut.util.algorithm.support.SelectionSort; L ca}J&x]^  
import org.rut.util.algorithm.support.ShellSort; /hR&8 `\\  
W:2( .?  
/** $t[FH&c(  
* @author treeroot 9s q  
* @since 2006-2-2 z2~ til  
* @version 1.0 /{ g>nzP  
*/ kS);xA8s]  
public class SortUtil { L~OvY  
public final static int INSERT = 1; b{&)6M)zo  
public final static int BUBBLE = 2; M'O <h  
public final static int SELECTION = 3; ?dg [:1R}  
public final static int SHELL = 4; Se}c[|8  
public final static int QUICK = 5; Czu9o;xr  
public final static int IMPROVED_QUICK = 6; 194)QeoFw  
public final static int MERGE = 7; CY5Z{qiX  
public final static int IMPROVED_MERGE = 8; )m T<MkP  
public final static int HEAP = 9; S9y}  
xJ]\+ 50  
public static void sort(int[] data) { U?Zq6_M&  
sort(data, IMPROVED_QUICK); }o(-=lF  
} PJ%C N(0  
private static String[] name={ 4xje$/_d  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *w\W/Y  
}; $Ds2>G4c  
*L^,|   
private static Sort[] impl=new Sort[]{ 77f9(~ZnT  
new InsertSort(), N =}A Z{$  
new BubbleSort(), 83_h J  
new SelectionSort(), 013x8!i  
new ShellSort(), [}=B8#Jl-C  
new QuickSort(), e X|m  
new ImprovedQuickSort(), AQvudx)@"  
new MergeSort(), 6A-|[(NS  
new ImprovedMergeSort(), /W<;Z;zk  
new HeapSort() jV1.Yz (`  
}; |u<7?)mp  
wlqksG[B  
public static String toString(int algorithm){ ^6V[=!& H  
return name[algorithm-1]; yNBfUj -L  
} .Yn_*L+4*  
db7B^|Di  
public static void sort(int[] data, int algorithm) { #q=Efn'  
impl[algorithm-1].sort(data); 583|blL  
} *.t 7G  
Zb>?8  
public static interface Sort { <\^8fn   
public void sort(int[] data); f2`2,?  
} VY4yS*y  
_]H&,</  
public static void swap(int[] data, int i, int j) { yvB.&<]No  
int temp = data; Z@!+v 19^  
data = data[j]; e*NnVys  
data[j] = temp; /nA{#HY  
} YNF k  
} <PH #[dH  
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