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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。 _jW>dU^B  
插入排序: I[@ts!YD  
n4Vwao/9x  
package org.rut.util.algorithm.support;  64SW  
H4W1\u  
import org.rut.util.algorithm.SortUtil; Ih; aBS  
/** aUA cR W  
* @author treeroot Qr<AV:  
* @since 2006-2-2 ^,Lt Ewd~Y  
* @version 1.0 X) 8e4~(?  
*/ |ribWCv0  
public class InsertSort implements SortUtil.Sort{ L,#^&9bHa#  
B4@fY  
/* (non-Javadoc) XWJ SLN(O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Ps5H5Qk;  
*/ VDG|>#[!  
public void sort(int[] data) { -=5EbNPwG  
int temp; TM)u?t+[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X2LV&oi  
} su}&".e^  
} Z A[)  
} 00"CC  
?5`{7daot  
} V- /YNRV  
kY=rz&?U  
冒泡排序: 7q!?1 -?8R  
I,]J=xi  
package org.rut.util.algorithm.support; 0Yp>+:#  
KyjyjfIwH  
import org.rut.util.algorithm.SortUtil; a%v>eXc  
>[EBpYi  
/** >G&^?5  
* @author treeroot ;ed#+$Na  
* @since 2006-2-2 Zd$JW=KR]l  
* @version 1.0 J||E;=%f-Q  
*/ oooS s&t  
public class BubbleSort implements SortUtil.Sort{ v G2.]?  
Nfg{,/ O  
/* (non-Javadoc) .8K6C]gw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pziq0  
*/ RB IOdz  
public void sort(int[] data) { lirNYJ]tO  
int temp; G?R_aPP  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,[Ag~.T  
if(data[j] SortUtil.swap(data,j,j-1); 9j0o&Xn  
} EsTB(9c?  
} S"Kq^DN  
} f9a$$nb3`  
} ##v`(#fu  
7LfcF  
} 07FT)QTE  
fCg@FHS&^  
选择排序: ';Nu&D#Ph  
St+ "ih%  
package org.rut.util.algorithm.support; ^zg acn  
?,>5[Ha^?  
import org.rut.util.algorithm.SortUtil; "T7>)fbu  
zSKKr?{  
/** GB =bG%Tb  
* @author treeroot =HS4I.@c_5  
* @since 2006-2-2 [ZD[a6(94  
* @version 1.0 Y[@0qc3UO  
*/ jQ|:I7y  
public class SelectionSort implements SortUtil.Sort { Q(e{~ ]*  
(xu=%  
/* J0sGvj{  
* (non-Javadoc) ^&NN]?  
* e8-ehs>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T<6GcI>A  
*/ ?2ItTrlB  
public void sort(int[] data) { (-(QDRxK  
int temp; r8,om^N6  
for (int i = 0; i < data.length; i++) { @D]lgq[  
int lowIndex = i; yPN+W8}f  
for (int j = data.length - 1; j > i; j--) { C `6S}f,  
if (data[j] < data[lowIndex]) { Mb.4J2F?  
lowIndex = j; Im+ 7<3Z  
} !b63ik15O~  
} X8Fzs!L`  
SortUtil.swap(data,i,lowIndex); toIYE*ocv=  
} !W /C[$E  
} xCq'[9oU  
tDt :^Bc  
} 1x{kl01m%  
_C$X04bU3V  
Shell排序: XXm'6xD-  
bcn7,ht  
package org.rut.util.algorithm.support; bb1  f/C%  
7]Rk+q2:  
import org.rut.util.algorithm.SortUtil; |z*>ixK  
VE$t%QT  
/** 6@YH#{~Zpv  
* @author treeroot zSXA=   
* @since 2006-2-2 7 >bMzdH  
* @version 1.0 $w/E9EJ)3A  
*/ +>}o;`hPe  
public class ShellSort implements SortUtil.Sort{ R$d7\nBG  
|IN[uQ  
/* (non-Javadoc) 1'fb @vO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3+V#[JBJv  
*/ `[Sl1saZ$S  
public void sort(int[] data) { (A4&k{C_  
for(int i=data.length/2;i>2;i/=2){ e2wvc/gG6  
for(int j=0;j insertSort(data,j,i); =?/&u<  
} ISBF\ wQY  
} (:7a&2/M  
insertSort(data,0,1); 9go))&`PJL  
} X!c?CL  
w.^yP7:  
/** +?AW>&68y  
* @param data $8g42LR'  
* @param j d}+W"j;  
* @param i QNpu TZn#Q  
*/ bLlH//ZRH  
private void insertSort(int[] data, int start, int inc) { (NaK3_  
int temp; "V}qf3 qU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J@Yj\9U  
} 4K7{f+T  
} cz(G]{N  
} niz'b]] +  
wE6A 7\k%  
} 328L)BmW  
V|: qow:F  
快速排序: }#/l N  
hKN6y%  
package org.rut.util.algorithm.support; z_n \5.  
D/:3R ZF  
import org.rut.util.algorithm.SortUtil; no&-YktP}  
YtYy zX5u7  
/** P=gJAE5  
* @author treeroot b-%l-u  
* @since 2006-2-2 f^e&hyC   
* @version 1.0 &S-er{]]  
*/  =:~(m  
public class QuickSort implements SortUtil.Sort{ N|Habua<Xw  
DFy1 bg  
/* (non-Javadoc) &,MFB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m\-PU z&C  
*/ -_>.f(1  
public void sort(int[] data) { moG~S]  
quickSort(data,0,data.length-1); !\x?R6K  
} U=m=1FYaG  
private void quickSort(int[] data,int i,int j){ m&/=&S  
int pivotIndex=(i+j)/2; ~kb{K;  
file://swap PeNF+5s/K  
SortUtil.swap(data,pivotIndex,j); >];"N{ A  
[h-norB((  
int k=partition(data,i-1,j,data[j]); kEP<[K  
SortUtil.swap(data,k,j); niWx^gKb$  
if((k-i)>1) quickSort(data,i,k-1); Pm?B 9S  
if((j-k)>1) quickSort(data,k+1,j); #>[wD#XJV  
A3q*$.[  
} C}Qt "-%  
/** 8xTix1u0  
* @param data bE I!Ja  
* @param i s MZ[d\  
* @param j mH\@QdF  
* @return N!c gN  
*/ ChE_unw  
private int partition(int[] data, int l, int r,int pivot) { vgThK9{m;  
do{ w}`3 d@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hSMV&Cs  
SortUtil.swap(data,l,r); {Hk/1KG>  
} %VJW@S>j/  
while(l SortUtil.swap(data,l,r); sfI N)jh  
return l; 3.),bm  
} - _t&+5]  
c0[k T  
} Zi{0-m6+  
[{cC  
改进后的快速排序: HJ@5B"  
m =k%,J_  
package org.rut.util.algorithm.support; v3-?CQb(  
I%xn,u  
import org.rut.util.algorithm.SortUtil; Xw^X&Pp  
"&-C$J5 Id  
/** uvv.WbZ  
* @author treeroot ,Rz }=j  
* @since 2006-2-2 o;QZe&  
* @version 1.0 SdI1}&  
*/ -9-fX(I  
public class ImprovedQuickSort implements SortUtil.Sort { 'C~9]Y].  
j)L1H* S%  
private static int MAX_STACK_SIZE=4096; /s`;9)G]9  
private static int THRESHOLD=10; %g w{[ /[A  
/* (non-Javadoc) g^j7@dum  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6mHhC?  
*/ a D|Yo  
public void sort(int[] data) { HcO5?{2  
int[] stack=new int[MAX_STACK_SIZE]; 7cw]v"iv  
KB+]eI-h  
int top=-1; o](.368+4  
int pivot; Euu ,mleM  
int pivotIndex,l,r; `%y5\!X  
SRf5W'4y  
stack[++top]=0; H\+-cvl  
stack[++top]=data.length-1; } yq  
euZ I`*0  
while(top>0){ -3vh!JMN  
int j=stack[top--]; 968^ "T#  
int i=stack[top--]; Eem g  
$?f]ZyZr.  
pivotIndex=(i+j)/2; =P]GPEz_  
pivot=data[pivotIndex]; !nzGH*td  
K7RKF$Z\  
SortUtil.swap(data,pivotIndex,j); oAz<G  
x'i0KF   
file://partition bl.EIyG>  
l=i-1; WG%2<Q^  
r=j; ,q</@}.\wN  
do{ n7DLJ`ho{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2AK}D%jfc  
SortUtil.swap(data,l,r); #r}uin*jD  
} =v 0~[ E4  
while(l SortUtil.swap(data,l,r); xb`CdtG2.  
SortUtil.swap(data,l,j); o4~kX  
or.\)(m#(  
if((l-i)>THRESHOLD){ 5"gL.Ez  
stack[++top]=i; rzT{-DZB[4  
stack[++top]=l-1; kM`7EPk  
} CQ18%w6  
if((j-l)>THRESHOLD){ Ja [#[BJ?  
stack[++top]=l+1; cL7C 2wB`  
stack[++top]=j; gjZx8oIoP  
} u+z~  
=|V" #3$f  
} e& Rb  
file://new InsertSort().sort(data); vgAFuQi(  
insertSort(data); 5/(sjMB  
} tJm{I)G  
/**  MYx88y  
* @param data 4)nt$fW  
*/ tN!Bvj:C[M  
private void insertSort(int[] data) { 3:AU:  
int temp; #90c$ dc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f?-J#x)  
} VIg\]%qse  
} E9R]sXf8  
} hS_.l}0yf  
iT$d;5_pU  
} 8&?p  
BS.=  
归并排序: +XQP jg  
tqhh<u;  
package org.rut.util.algorithm.support; '!@A}&]  
8Fx]koP.  
import org.rut.util.algorithm.SortUtil; mu>] 9ZW  
A]xCF{*)&  
/** 0_HJ.g!  
* @author treeroot @,Jb7V<  
* @since 2006-2-2 vX.]hp5~  
* @version 1.0 )Ga8`t"  
*/ W5X7FEW  
public class MergeSort implements SortUtil.Sort{ 6sy,A~e  
.hne)K%={y  
/* (non-Javadoc) hgwn> p:S#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oG\>--  
*/ ~'{VaYk]v  
public void sort(int[] data) { SwJHgZ&  
int[] temp=new int[data.length]; ,!H\^Vfl  
mergeSort(data,temp,0,data.length-1); #[(gIOrNn8  
} D-D #`  
I4:rie\hjC  
private void mergeSort(int[] data,int[] temp,int l,int r){ &Ea"hd  
int mid=(l+r)/2; WL/5 oj  
if(l==r) return ; R#LGFXUj  
mergeSort(data,temp,l,mid); i'iO H|s  
mergeSort(data,temp,mid+1,r); nF|Oy0  
for(int i=l;i<=r;i++){ tNB%eb{  
temp=data; Y{j7Q4{  
} <(?' s9  
int i1=l; oN ;-M-(  
int i2=mid+1; pU@YiwP"]x  
for(int cur=l;cur<=r;cur++){ L6x B`E9  
if(i1==mid+1) AoU_;B\b%  
data[cur]=temp[i2++]; q#m!/wod  
else if(i2>r) J@gm@ jLc  
data[cur]=temp[i1++]; "u5KbJW  
else if(temp[i1] data[cur]=temp[i1++]; PY\W  
else T+(M8 qb  
data[cur]=temp[i2++]; +K&?)?/=  
} *?p ^6vO  
} [9J:bD  
wBE7Bv45  
} ^vG=|X|)c  
X&.:H~xS+  
改进后的归并排序: Nuo^+z E   
WV@X@]U  
package org.rut.util.algorithm.support; Qxky^:B  
!YY 6o V  
import org.rut.util.algorithm.SortUtil; [\a:4vDAbi  
cB<O.@  
/** |zh +  
* @author treeroot eX@ v7i,}  
* @since 2006-2-2 "&Gw1.p  
* @version 1.0 A`IHP{aB  
*/ \*Ts)EW  
public class ImprovedMergeSort implements SortUtil.Sort {  M$F{N  
L7<+LA)s0  
private static final int THRESHOLD = 10; e|JIrOnc  
v` $%G  
/* W oWBs)E  
* (non-Javadoc) FN>L7 *,0  
* df^0{gNHx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m[W/j/$A+x  
*/ &{BBxv)y  
public void sort(int[] data) { 4`$5 _} j!  
int[] temp=new int[data.length]; O/(3 87=U  
mergeSort(data,temp,0,data.length-1); e~3]/BL  
} @`5QG2  
KM5jl9Vv  
private void mergeSort(int[] data, int[] temp, int l, int r) { k&yQ98H$K"  
int i, j, k; (x}A_ i  
int mid = (l + r) / 2; .l7j8 }  
if (l == r) /9P^{ OZ;y  
return; A 0 S8Dh$  
if ((mid - l) >= THRESHOLD) ]9#CVv[rq  
mergeSort(data, temp, l, mid); 1]Gf)|  
else o T:j:n  
insertSort(data, l, mid - l + 1); YXgWH'i~  
if ((r - mid) > THRESHOLD) ]F !'M  
mergeSort(data, temp, mid + 1, r); 3xP~~j;7  
else JR] )xPI`  
insertSort(data, mid + 1, r - mid); Kq$:\B)<c  
cD5w| rm?i  
for (i = l; i <= mid; i++) { 33*^($bE&  
temp = data; XMomFW_@  
} KuIkul9^%  
for (j = 1; j <= r - mid; j++) { d8 rBu jT  
temp[r - j + 1] = data[j + mid]; GI}4,!^N  
} SwyaYK  
int a = temp[l]; K *TnUQ  
int b = temp[r]; L^6"' #  
for (i = l, j = r, k = l; k <= r; k++) { "pOqd8>]  
if (a < b) { 6BUBk>A`  
data[k] = temp[i++]; zMbfV%b  
a = temp; UP}feN  
} else { 3(MoXA*  
data[k] = temp[j--]; 2XzF k_6H  
b = temp[j]; $K`_ K#A  
} 4A;[s m^f  
} dUI3erO  
} Rk}\)r\  
iKohuZr  
/** cZ6?P`X  
* @param data NAJ '><2  
* @param l f+{c1fb>s  
* @param i ur?d6 a  
*/ n; Lo  
private void insertSort(int[] data, int start, int len) { v hRu `Yb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -)p@BtMS  
} >Dk1axZ!>/  
} fKFnCng  
} su,`q  
} rH[5~U  
q s v+.aW  
堆排序: @P*ylB}?Q  
~o:rM/!Ba  
package org.rut.util.algorithm.support; =s`XZkh  
,?C|.5  
import org.rut.util.algorithm.SortUtil; &/ \O2Aw8  
h1n*WQ-  
/** mYntU^4f  
* @author treeroot iU.!oeR?  
* @since 2006-2-2 .UNF~}^H  
* @version 1.0 s.f`.o  
*/ d&/^34gn  
public class HeapSort implements SortUtil.Sort{ )C'G2RV  
X7t 5b7  
/* (non-Javadoc) TFAYVK~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~D<7W4c  
*/ E%-Pyg*  
public void sort(int[] data) { 3yeK@>C  
MaxHeap h=new MaxHeap(); R1I I k  
h.init(data); 1[26w_B3  
for(int i=0;i h.remove(); >`<Ued  
System.arraycopy(h.queue,1,data,0,data.length); Mr$# e  
}  aeEw#  
OG0r4^6Ly  
private static class MaxHeap{ 7xX;MB &  
`Af{H/qiI  
void init(int[] data){ /p[|DJo M  
this.queue=new int[data.length+1]; b{Z^)u2X  
for(int i=0;i queue[++size]=data; AQE eIFH  
fixUp(size); Y'tqm&}  
} 6"BtfQ")  
} Q&oC]u(="&  
sjkWz2]S  
private int size=0; C4&U:y<ju  
b7?U8/#'  
private int[] queue; MDMtOfe|  
}v_p gatC  
public int get() { szf"|k!  
return queue[1]; Zkf 3t>[  
} *54>iO- c  
JoZqLy!@  
public void remove() { hubfK~  
SortUtil.swap(queue,1,size--); 9V|E1-")E  
fixDown(1); 1~["{u  
} | \ s2  
file://fixdown &p/S>qKu#  
private void fixDown(int k) { :iP>z}h  
int j; |pfhrwJp  
while ((j = k << 1) <= size) { >t 1_5  
if (j < size %26amp;%26amp; queue[j] j++; QH@Q\ @,  
if (queue[k]>queue[j]) file://不用交换 fG:PdIJ7_  
break; Xz;et>UD*B  
SortUtil.swap(queue,j,k); .OVW4svX  
k = j; $sU5=,  
} _fczE~O/  
} 1{SrHdD=  
private void fixUp(int k) { 9oZ } h&  
while (k > 1) { BSx j~pun  
int j = k >> 1; AyQS4A.s[  
if (queue[j]>queue[k]) w8eG;  
break; w$w>N(e  
SortUtil.swap(queue,j,k); ovhC4 2i  
k = j; g*:ae;GP  
} Q'n(^tbL  
} 4+ASw N9  
4e=/f,o1  
} ,Y+r<;  
Ss"|1]acP  
} 8>C; >v  
.b =M5JsyV  
SortUtil: 2ApDpH`fiJ  
8m#}S\m  
package org.rut.util.algorithm; 3v8V*48B$  
}-REBrb-  
import org.rut.util.algorithm.support.BubbleSort; r;&]?9)W0  
import org.rut.util.algorithm.support.HeapSort; -mev%lV  
import org.rut.util.algorithm.support.ImprovedMergeSort; c!'A)JD@  
import org.rut.util.algorithm.support.ImprovedQuickSort; )GiFkG  
import org.rut.util.algorithm.support.InsertSort; eT7!a']x  
import org.rut.util.algorithm.support.MergeSort; yt/20a  
import org.rut.util.algorithm.support.QuickSort; 6%\7.h  
import org.rut.util.algorithm.support.SelectionSort; SREDM  
import org.rut.util.algorithm.support.ShellSort; Tf&f`/  
`jD8(}_  
/** O ,F]\  
* @author treeroot { ()p%#*  
* @since 2006-2-2 t,--V|7-  
* @version 1.0 jMm_A#V>p  
*/ N<#S3B?.  
public class SortUtil { 2*~JMbm  
public final static int INSERT = 1; }m=t zHB*  
public final static int BUBBLE = 2; t*Z .e.q+  
public final static int SELECTION = 3; kPx]u\  
public final static int SHELL = 4; O:oU`vE  
public final static int QUICK = 5; .u&&H_ UmE  
public final static int IMPROVED_QUICK = 6; KKeb ioW  
public final static int MERGE = 7; T..N*6<X  
public final static int IMPROVED_MERGE = 8; y1,?ZWTayr  
public final static int HEAP = 9; ]y1$F Ir+  
wQo6!H "K  
public static void sort(int[] data) { ..P=D <'f  
sort(data, IMPROVED_QUICK); Zd[y+$>  
} +z]:CF  
private static String[] name={ aJuj7y-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <3SFP3^:  
}; 2 pM  
kcq9p2zKv  
private static Sort[] impl=new Sort[]{ >:Rt>po8|w  
new InsertSort(), Bo](n*i  
new BubbleSort(), p`E|SNt/W  
new SelectionSort(), zh#OD{  
new ShellSort(), ue6/EN;}  
new QuickSort(), ,$MWk(S  
new ImprovedQuickSort(), Nt`F0 9S  
new MergeSort(), Z/V`Z* fy  
new ImprovedMergeSort(), UA69_E{JCH  
new HeapSort() LW83Y/7  
}; _/QKWk&j  
*([0"  
public static String toString(int algorithm){ )V[w:=*  
return name[algorithm-1]; yiv RpSL  
} Gx(KN57D  
wf~5lpI[  
public static void sort(int[] data, int algorithm) { :,h=2a_ 8  
impl[algorithm-1].sort(data); {<- ouD  
} Ak\D6eHcB  
< '>d0:>N  
public static interface Sort { 7':5  
public void sort(int[] data); (]zl$*k  
} k=h/i8i2z  
5p]urfN-f  
public static void swap(int[] data, int i, int j) { WryW3];0OR  
int temp = data; )*^OPVt  
data = data[j]; >j(I[_g  
data[j] = temp; Q>SPV8s   
} i GEQXIr3  
} E i\J9zt  
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