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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。 B5#>ieM*  
插入排序: S@WT;Q2Z  
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package org.rut.util.algorithm.support; *7yrm&@nG  
Lr(My3vF8q  
import org.rut.util.algorithm.SortUtil; *V@t]d$=#  
/** %$+bO/f  
* @author treeroot 3s,a%GOk  
* @since 2006-2-2 FOSC#W9E  
* @version 1.0 " 8g\UR"[  
*/ ] N7(<EV/  
public class InsertSort implements SortUtil.Sort{ eeOG(@@o(  
%VO>6iVn  
/* (non-Javadoc) 9G{#a#Z.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V6^=[s R  
*/ cx*$GaMk  
public void sort(int[] data) { Tl-Ix&37  
int temp; slG%o5|m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _qSVYVJ u  
} qfgw^2aUa  
} wF{M"$am  
} fa(-&;q  
nm@.] "/  
} pT<I!,~  
-) !;45  
冒泡排序: 3\a VZx!  
eY'RDQa  
package org.rut.util.algorithm.support; 'F^"+Xi  
7_5-gtD  
import org.rut.util.algorithm.SortUtil; Mdy4H[Odq  
Ev1gzHd!i  
/** mS &^xWPV  
* @author treeroot m/aA q8  
* @since 2006-2-2 )C0 y<:</  
* @version 1.0 M HKnHPv  
*/ oSkvTK$ &i  
public class BubbleSort implements SortUtil.Sort{ G8Zl[8  
~4`3p=$  
/* (non-Javadoc) bHioM{S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lN[#+n  
*/ +qM2&M  
public void sort(int[] data) { o65I(`  
int temp; E{IY7Xz^>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _5v]69C#  
if(data[j] SortUtil.swap(data,j,j-1); Jr,**,wA  
} qE{L42  
} jFwJ1W;?-  
} lQ?_1H~4=  
} \S)cVp)h  
(Cbm*VL  
} _/h<4G6A  
a} :2lL%  
选择排序: t^g+nguz  
\_t[\&.a}  
package org.rut.util.algorithm.support; UZ7ukn-  
23P7%\  
import org.rut.util.algorithm.SortUtil; /3qKsv#  
!~ZAm3GwL  
/** n<DZb`/uHZ  
* @author treeroot .N  Z  
* @since 2006-2-2 ;^  YpQP  
* @version 1.0 u'Z^|IVfo  
*/ 88A,ll%  
public class SelectionSort implements SortUtil.Sort { q$jwH] .  
Fz@U\\94z  
/* )S|&3\  
* (non-Javadoc) o:lMRP~  
* 2:&QBwr+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [&:dPd1_  
*/  ~5n?=  
public void sort(int[] data) { (kSb74*g  
int temp; E&> 2=$~  
for (int i = 0; i < data.length; i++) { muIJeQ.C  
int lowIndex = i; Rh{`#dI~=  
for (int j = data.length - 1; j > i; j--) { w,;ox2  
if (data[j] < data[lowIndex]) { $qM&iI-l0  
lowIndex = j; ]1|OQYG  
} :VlMszy}B3  
} 9Q&]5| x  
SortUtil.swap(data,i,lowIndex); 6'jgjWEe3&  
} %H=^U8WB  
} M8f[ck  
TZa LB}4  
} t7,**$ST  
!s[ gv1  
Shell排序: _ IlRZ}f  
9oj0X>| 1  
package org.rut.util.algorithm.support; G PL^!_  
^6PKSEba  
import org.rut.util.algorithm.SortUtil; ->J5|c#  
*I`Eb7 ^  
/** FQ]5W |e  
* @author treeroot ZKVM9ofXRi  
* @since 2006-2-2 (FSa>  
* @version 1.0 Xb1is\JB  
*/ f:ep~5] G  
public class ShellSort implements SortUtil.Sort{ OTmr-l6  
Q*R9OF  
/* (non-Javadoc) j&`D{z-c~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mJME1#j$/|  
*/ 7}vx]p2  
public void sort(int[] data) { ;tfGhHpQn  
for(int i=data.length/2;i>2;i/=2){ @Zfg]L{Lr  
for(int j=0;j insertSort(data,j,i); d@{#F"o  
} ]NY^0SqM  
} N`7+] T  
insertSort(data,0,1); /n3SE0Y  
} q `L}\}o  
r9~IR  
/** z=qxZuFkDs  
* @param data r z5@E  
* @param j ?)e6:T(  
* @param i 'o1lJ?~kH  
*/ 4YCuO%  
private void insertSort(int[] data, int start, int inc) { j/hm)*\io  
int temp; 68nPz".X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UX)QdT45Mh  
} 2o~UA\:+=  
} e(jD[q  
} "_ON0._(/  
z#+Sf.  
} W ZW:q  
EP6@5PNZ  
快速排序: KZ|p_{0&  
,UneS  
package org.rut.util.algorithm.support; q5>!.v   
|6~ Kin  
import org.rut.util.algorithm.SortUtil; ^aY,Wq  
}\vw>iHPX@  
/** *.+N?%sAP)  
* @author treeroot jgT *=/GH2  
* @since 2006-2-2 #x(3>}  
* @version 1.0 ]9hhAT44  
*/ /rv=ml pRL  
public class QuickSort implements SortUtil.Sort{ (^^}Ke{J  
oC(.u?  
/* (non-Javadoc) 4J$dG l#f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lt#3&@<v  
*/ <Mf(2`T  
public void sort(int[] data) { ^P owL:  
quickSort(data,0,data.length-1); -nnAe F  
} g>_d,#F  
private void quickSort(int[] data,int i,int j){ i[PksT#p  
int pivotIndex=(i+j)/2; 1"U.-I@  
file://swap nT@FS t  
SortUtil.swap(data,pivotIndex,j); I6[=tB  
EK zYL#(i  
int k=partition(data,i-1,j,data[j]); =_`cY^ib+  
SortUtil.swap(data,k,j); >C}KSyV;  
if((k-i)>1) quickSort(data,i,k-1); (+;%zh-  
if((j-k)>1) quickSort(data,k+1,j); g HKA:j`c  
kTo{W]9]  
} [.>g.p,;  
/** KwhATYWQb  
* @param data 3y*dBw  
* @param i ?#  )\SQ  
* @param j v\Zq=,+  
* @return i/F ].Sag  
*/ (2r808^2  
private int partition(int[] data, int l, int r,int pivot) { y_{v&AGmgm  
do{ &(~"OD  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); > @q4Uez  
SortUtil.swap(data,l,r); |JTDwmR  
} TU?$yNE  
while(l SortUtil.swap(data,l,r); {-L}YX"Bh  
return l; ~0 Mw\p%}  
} DcEGIaW  
{e83 A /{  
} 4m6%HV8{}[  
' y_2"  
改进后的快速排序: =p#:v  
ie<m)  
package org.rut.util.algorithm.support; Ve t<,;Te  
Lq{/r+tt/  
import org.rut.util.algorithm.SortUtil; DO ,7vMO  
tD No; f  
/** (0zYS_m A  
* @author treeroot l#|M.V6G  
* @since 2006-2-2 (h% xqXs  
* @version 1.0 da5fKK/s  
*/ fx/If  
public class ImprovedQuickSort implements SortUtil.Sort { ^Rmrre`uU  
#\MkbZc d  
private static int MAX_STACK_SIZE=4096; IdciGS6 t  
private static int THRESHOLD=10; eLk:">kj  
/* (non-Javadoc) }~! D]/B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D?r% Y  
*/ $TavvO%#  
public void sort(int[] data) { \D}$foHg  
int[] stack=new int[MAX_STACK_SIZE]; 4 zipgw  
A|BN >?.t  
int top=-1; s7:w>,v/  
int pivot; ]VK9d;0D  
int pivotIndex,l,r; o^<W3Z  
 fG|+ !  
stack[++top]=0;  Rlx  
stack[++top]=data.length-1; @wa<nY d  
qnf\K}   
while(top>0){ 'jBtBFzP-  
int j=stack[top--]; Sigu p#.p  
int i=stack[top--]; !4mAZF b  
|@*   
pivotIndex=(i+j)/2; A9M/n^61  
pivot=data[pivotIndex]; RJLhR_t7n  
#oEq)Vq>g|  
SortUtil.swap(data,pivotIndex,j); (eO_]<wmky  
q4ej7T8  
file://partition i|G /x  
l=i-1; 2Q[q)u  
r=j; `}*jjnr"  
do{ )-S;j)(+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T%1Kh'92  
SortUtil.swap(data,l,r); H^8t/h  
} q??N,  
while(l SortUtil.swap(data,l,r); Ox+}JB [  
SortUtil.swap(data,l,j); ^j]"5@f  
`-<m#HF:)d  
if((l-i)>THRESHOLD){ scR+F'M  
stack[++top]=i; 30L/-+r1  
stack[++top]=l-1; |sV@j_TX  
} zjwo"6c>  
if((j-l)>THRESHOLD){ x DX_s:A  
stack[++top]=l+1; -/J2;AkGH  
stack[++top]=j; *uMtl'  
} rOXh?r  
$ 7uxReFZR  
} sys;Rz2  
file://new InsertSort().sort(data); mNr<=Z%b  
insertSort(data); t[x[X4  
} K]dX5vJw'  
/** jp+#N pH  
* @param data  `/eh  
*/ K<7 Db4H  
private void insertSort(int[] data) { pqxBu  
int temp; DP4l %2m0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0/?=FM >  
} <zF/at  
} [N guQ]B.  
} <N\#6m  
|NaEXzo|qY  
} +/2:  
&6@e9ff0  
归并排序: _D."KU|  
;#6j9M0  
package org.rut.util.algorithm.support; R=s^bYdoy  
v9vY#W  
import org.rut.util.algorithm.SortUtil; u"M^qRhD  
-vBk,;^>  
/** ({p @Ay  
* @author treeroot ,v*<yz/  
* @since 2006-2-2 ED R*1!d  
* @version 1.0 d)jX%Z$LC  
*/ +0FmeM&`h_  
public class MergeSort implements SortUtil.Sort{ 8:4`q 9  
' $X}'u  
/* (non-Javadoc) @)m+b;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Q-Rt  
*/ )z2hyGX  
public void sort(int[] data) {  S]&7  
int[] temp=new int[data.length]; ;gv9J [R  
mergeSort(data,temp,0,data.length-1); AJ-~F>gn  
} <D{_q.`vA  
7(bE;(4  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3 Ho<4_I,  
int mid=(l+r)/2; t!}?nw%$  
if(l==r) return ; Y4n; [nHQ(  
mergeSort(data,temp,l,mid); .%N*g[J  
mergeSort(data,temp,mid+1,r); 0i65.4sK  
for(int i=l;i<=r;i++){ jYJfo<  
temp=data; $)Pmr1==  
} *`.4M)Ym~  
int i1=l; 3ZU<u;  
int i2=mid+1; &y=~:1&f  
for(int cur=l;cur<=r;cur++){ "M5&&\uT  
if(i1==mid+1) Og3bV_,"  
data[cur]=temp[i2++]; (_O_zu8_  
else if(i2>r) 5T;,wQ<  
data[cur]=temp[i1++]; cE0Kvqe`  
else if(temp[i1] data[cur]=temp[i1++]; $2\k| @)s  
else YC0FXNV  
data[cur]=temp[i2++]; *FEY"W+bY  
} ;R.l?Bg  
} 2d Px s:8&  
LXQ-J  
} !t 92_y3  
bAqaf#}e  
改进后的归并排序: :ift{XR'  
gAgP("  
package org.rut.util.algorithm.support; 4`+hX'  
Oy/+uw^  
import org.rut.util.algorithm.SortUtil; {,rVA(I@  
Nm]\0m0p-  
/** kKg%[zXS  
* @author treeroot g>*t"Rf:  
* @since 2006-2-2 e'Th[ wJ  
* @version 1.0 O%(k$ fvM  
*/ U i ~*]  
public class ImprovedMergeSort implements SortUtil.Sort { x9!vtrM\Zr  
Skd,=r  
private static final int THRESHOLD = 10; y~\K~qjd  
Q.G6 y,KR  
/* u2xb^vu  
* (non-Javadoc) L E>A|M$X  
* y}bE'Od  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *T'>-nm]  
*/ +k4 SN  
public void sort(int[] data) { h&6v&%S/L  
int[] temp=new int[data.length]; *m[ow s  
mergeSort(data,temp,0,data.length-1); "?Cx4<nsM  
} ?=h{`Ci^ $  
D*R49hja{  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?"[h P=3J  
int i, j, k; I5J9,j  
int mid = (l + r) / 2;  Gp/yr  
if (l == r) q={\|j$X  
return; ]}&f<X  
if ((mid - l) >= THRESHOLD) $lMEZt8A  
mergeSort(data, temp, l, mid); r%/*,lLO  
else /)` kYD6  
insertSort(data, l, mid - l + 1); q0hg0 DC[;  
if ((r - mid) > THRESHOLD) a jCx"J  
mergeSort(data, temp, mid + 1, r); ^#4?v^QNh  
else ?#LbhO*   
insertSort(data, mid + 1, r - mid); gqRwN p  
d?/?VooU  
for (i = l; i <= mid; i++) { e/;chMCq  
temp = data; B^SD5  
} V3u[{^^f  
for (j = 1; j <= r - mid; j++) { ~e<v<92Xu  
temp[r - j + 1] = data[j + mid]; a9GLFA8Vq  
} V nv9 <=R  
int a = temp[l]; =wW3Tr7~  
int b = temp[r]; ![BQ;X  
for (i = l, j = r, k = l; k <= r; k++) { .hxcx>%  
if (a < b) { |E)Es!dr  
data[k] = temp[i++]; 'MHbXFM  
a = temp; ''f07R  
} else { L@|W&N;%a  
data[k] = temp[j--]; XKU+'Tz  
b = temp[j]; qi\!<clv  
} Sh=Px9'i  
} YpT x1c-  
} o0p%j4vac  
t1)b26;  
/** 0UmKS\P  
* @param data c2z%|\q  
* @param l s}d1 k  
* @param i S3=M k~_&  
*/ .f V-puE  
private void insertSort(int[] data, int start, int len) { I"]5B  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JxP=[>I  
} oA kF  
} ?[K+Ym+  
} w`vJE!4B  
} iTt"Ik'  
wR?M2*ri  
堆排序: o Ohm`7iy  
e4V4%Qw  
package org.rut.util.algorithm.support; AT:T%a:G?  
d))(hk:  
import org.rut.util.algorithm.SortUtil; .3%eSbt0  
:Gh* d)  
/** rdsm /^,s  
* @author treeroot $Gs&' y R  
* @since 2006-2-2 ->oQ,ezB  
* @version 1.0 pHFh7-vj  
*/ }*~EA=YN;  
public class HeapSort implements SortUtil.Sort{ 7 N?x29  
`MgR/@%hr  
/* (non-Javadoc) `CI9~h@k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \guZc}V]:\  
*/ .[hQ#3)W  
public void sort(int[] data) { %($qg-x  
MaxHeap h=new MaxHeap(); . F0V  
h.init(data); _XtLO- D  
for(int i=0;i h.remove(); _=1SR\  
System.arraycopy(h.queue,1,data,0,data.length); hv'~S  
} .#uRJo%8  
3,bA&c3  
private static class MaxHeap{ oAX-Sg-/$  
';x .ry  
void init(int[] data){ 9x,Aqr$t  
this.queue=new int[data.length+1]; fv !l{  
for(int i=0;i queue[++size]=data; K h9$  
fixUp(size); : z^ p s0  
} 5#.uA_Fov  
} 2,O-/A;tW*  
Wiqy".YY  
private int size=0; dhN[\Z%  
Ru Q\H0pr  
private int[] queue; p;:tzH\l  
<0T4MR7  
public int get() { (}fbs/8\p  
return queue[1]; )p"37Ct?  
} #D3e\(  
Hw5\~!FX  
public void remove() { 0}qij  
SortUtil.swap(queue,1,size--); />XfK,c-  
fixDown(1); Z&=K+P  
} BBw`8!  
file://fixdown L`YnrDZK  
private void fixDown(int k) { =iRi 9r'l  
int j; ^Ois]#py  
while ((j = k << 1) <= size) { EH"iK2n\9  
if (j < size %26amp;%26amp; queue[j] j++; pv TV*  
if (queue[k]>queue[j]) file://不用交换 #lQbMuR  
break; xTX\% s|  
SortUtil.swap(queue,j,k); l!\C"f1o,  
k = j; %*<k5#Yq  
} |H5){2V>K  
} rd\mFz-SB  
private void fixUp(int k) { iYA06~ d  
while (k > 1) { FpE83}@".w  
int j = k >> 1; ]DdD FLM  
if (queue[j]>queue[k]) @QtJ/("&WC  
break; /a6\G.C5  
SortUtil.swap(queue,j,k); *}3e'0`  
k = j; jK\2y|&&c  
} K;G1cFFyG  
} \~Zj](#  
;C-5R U V  
} bslv_OxJ  
jHBn^Nly  
} mwCNfwb:  
%96JH YcX  
SortUtil: {$>*~.Wu  
OekcU% C  
package org.rut.util.algorithm; Kwfrh?  
4QK([q  
import org.rut.util.algorithm.support.BubbleSort; JiP]F J;  
import org.rut.util.algorithm.support.HeapSort; &qFdP'E;$  
import org.rut.util.algorithm.support.ImprovedMergeSort; kjN9(&D  
import org.rut.util.algorithm.support.ImprovedQuickSort; ExI?UGT  
import org.rut.util.algorithm.support.InsertSort; 3j0/&ON  
import org.rut.util.algorithm.support.MergeSort; JGf6*D"O  
import org.rut.util.algorithm.support.QuickSort; 8nQlmWpJ  
import org.rut.util.algorithm.support.SelectionSort; a9"x_IVU  
import org.rut.util.algorithm.support.ShellSort; *D F5sY  
('W#r"  
/** KU3lAjzN  
* @author treeroot }_0?S0<#  
* @since 2006-2-2 9M~EH?>+[  
* @version 1.0 S D] d/|y  
*/ IoJkM-^H&)  
public class SortUtil { X.xp'/d  
public final static int INSERT = 1; W<yh{u&,  
public final static int BUBBLE = 2; Q5r cPU>A  
public final static int SELECTION = 3; W!I"rdo;V  
public final static int SHELL = 4; o&g=Z4jj<  
public final static int QUICK = 5; 6<NaME  
public final static int IMPROVED_QUICK = 6; 29 u"\f a  
public final static int MERGE = 7; $WnK  
public final static int IMPROVED_MERGE = 8; #@Zz Bf  
public final static int HEAP = 9; ag14omM-  
G?e,Q$  
public static void sort(int[] data) { q+dY&4&u  
sort(data, IMPROVED_QUICK); H]"Z_n_  
} s[h'W~  
private static String[] name={ -n!.PsGO>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I o7pp(  
}; 9fvy)kX;s  
I5F oh|)  
private static Sort[] impl=new Sort[]{ h(]O;a-  
new InsertSort(), nWbe=z&y8[  
new BubbleSort(), 0Apdhwk~  
new SelectionSort(), @pYAqX2  
new ShellSort(), )#T(2A  
new QuickSort(), ]&yO>\MgJB  
new ImprovedQuickSort(), Mmbb}(<  
new MergeSort(), SYB } e  
new ImprovedMergeSort(), %#02Z%?%  
new HeapSort() bU=!~W5  
}; WUGPi'x  
0fXdE ;M3  
public static String toString(int algorithm){ kE,~NG9P  
return name[algorithm-1]; qUx!-DMY  
} f_9%kEXICt  
N|z-s  
public static void sort(int[] data, int algorithm) { joAR;J  
impl[algorithm-1].sort(data); eek5Xm  
} >6=yxCJ  
KKa"Ba$g  
public static interface Sort { Bca\grA  
public void sort(int[] data); p{t2pfb  
} Sq UoXNw  
'_g8fz 3  
public static void swap(int[] data, int i, int j) { jbn{5af  
int temp = data; Ngu+V  
data = data[j]; _I&0HRi  
data[j] = temp; eq "a)QB3m  
} a>.2Q<1  
} -}MWA>an8  
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