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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。 n&%0G2m:  
插入排序: cj\?vX\V  
JHXtKgFX  
package org.rut.util.algorithm.support; Gk']Ma2J}  
G' '9eV$  
import org.rut.util.algorithm.SortUtil; B#;6z%WK  
/** dQs>=(|t  
* @author treeroot &_$0lI DQ  
* @since 2006-2-2 r_hs_n!6  
* @version 1.0 >ZwDcuJ~Lz  
*/ *djVOC  
public class InsertSort implements SortUtil.Sort{ ) ^`V{iD  
G]n_RP$G  
/* (non-Javadoc)  Al1}Ir   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tbXl5x0  
*/ _)S['[  
public void sort(int[] data) { 8F K%7\V  
int temp; %M,^)lRP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6z5wFzJv?q  
} F};T<#  
} P84= .* >  
} %-KgR  
w `nm}4M  
} T'ei>]y]  
TD sjNFe3  
冒泡排序: [XhG7Ly  
60G(jO14  
package org.rut.util.algorithm.support; cTBUj  
tR\cS )  
import org.rut.util.algorithm.SortUtil; f>iDq C4  
cE^Ljk  
/** L0)w~F ?m  
* @author treeroot %Jji<M]  
* @since 2006-2-2 fuU 3?SG  
* @version 1.0 Z*+y?5+L"P  
*/ Z<iK(?@O  
public class BubbleSort implements SortUtil.Sort{ .L~ NX/V  
dsn(h5,Q'  
/* (non-Javadoc) `&:>?Y/X2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SyI\ulmL  
*/ QM24cm T  
public void sort(int[] data) { ?PYZW5  
int temp; 5\Rg%Ezl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ C]Q`!e  
if(data[j] SortUtil.swap(data,j,j-1); }X6w"  
} ]$BC f4:  
} "/y SHB[  
} Pm]lr|Q{I  
} & }7+.^  
Ss3~X90!*B  
} 3Rhoul[S  
+NJIi@  
选择排序: >0UY,2d  
9PUobV_^Wo  
package org.rut.util.algorithm.support; ^-Rqlr,F;  
^3ai}Ei3  
import org.rut.util.algorithm.SortUtil; ^#t6/fY.#  
#^}s1 4n  
/** _<GXR ?  
* @author treeroot '0=mV"#H{  
* @since 2006-2-2 n?>|2>  
* @version 1.0 {oS/Xa  
*/ qu\U^F  
public class SelectionSort implements SortUtil.Sort { h$#PboLd  
1En:QQ4/  
/* UIkO_/}  
* (non-Javadoc) &;bey4_J  
* ,9M2'6=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Q,~Nw>  
*/ @?jbah#  
public void sort(int[] data) { ;Y,zlq2  
int temp; IML.6<,(Z  
for (int i = 0; i < data.length; i++) { CkRilS<  
int lowIndex = i; S5:&_&R8[  
for (int j = data.length - 1; j > i; j--) { 8>9MeDE  
if (data[j] < data[lowIndex]) { $DaQM'-  
lowIndex = j; :r2d%:h%2  
} }KYOde@  
} ,vo]WIQ\:  
SortUtil.swap(data,i,lowIndex); xSqr=^  
} *&tTiv{^  
} a)*(**e$*i  
iaJLIrl  
} H& $M/`  
 6HPuCP  
Shell排序: LLFQ5py{  
* H~=dPC  
package org.rut.util.algorithm.support; [%P[ x]-  
f1S% p  
import org.rut.util.algorithm.SortUtil; HRyhq ;C  
p({Lp}'  
/** `Hq*l"8  
* @author treeroot j"jQiL_*  
* @since 2006-2-2 xLb=^Xjec  
* @version 1.0 (5A8#7a  
*/ F-F1^$]k  
public class ShellSort implements SortUtil.Sort{ H]W'mm  
Ct^=j@g  
/* (non-Javadoc) ?LJiFG]^m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x+TdTe;p  
*/ da~_(giD*  
public void sort(int[] data) { G^cMY$?99  
for(int i=data.length/2;i>2;i/=2){ /;T tMQt  
for(int j=0;j insertSort(data,j,i); cNikLd~?A  
} >5E1y!  
} ;W|GUmADf  
insertSort(data,0,1); R! n7g8I%  
} 89j:YfA=v  
Q3Z?Z;2aR  
/** L]H' ]wpn=  
* @param data N`{ 6<Z0  
* @param j ZNl1e'  
* @param i Vc6 >i|"-O  
*/ +* F e   
private void insertSort(int[] data, int start, int inc) { D>^g2!b:  
int temp; l D->1=z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^QjkZ^<dD  
} 4e?bkC  
} H DD)AM&p  
} &EYoviFp  
>j7]gi(  
} P_b!^sq9  
w ~"%&SNN  
快速排序: E^gN]Z"O  
?bu=QV@  
package org.rut.util.algorithm.support; p5py3k  
)*R';/zaI  
import org.rut.util.algorithm.SortUtil; M IyT9",Pl  
cW_l|  
/** q!+:zZu  
* @author treeroot ]NtBP  
* @since 2006-2-2 'r(g5H1}gi  
* @version 1.0 ..k8HFz>"  
*/ Kv:Rvo  
public class QuickSort implements SortUtil.Sort{ +sTPTCLE  
= y(*?TZH  
/* (non-Javadoc) yye5GVY$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p] N/]2rR  
*/ @h_ bXo  
public void sort(int[] data) { ,`OQAJ)>  
quickSort(data,0,data.length-1); 4;>HBCM4-  
} oX*;iS X  
private void quickSort(int[] data,int i,int j){ lWd@  
int pivotIndex=(i+j)/2; ,jtaTG.>  
file://swap +Wgfxk'{  
SortUtil.swap(data,pivotIndex,j); \YFM5l;IU  
OHW|?hI=[  
int k=partition(data,i-1,j,data[j]); @ULWVS#t2  
SortUtil.swap(data,k,j); /2hRL yeAZ  
if((k-i)>1) quickSort(data,i,k-1); +S+=lu _  
if((j-k)>1) quickSort(data,k+1,j); FC~%G&K/q^  
FV3[7w=D\  
} :>o 0zG[;f  
/** X$@qs9?)^  
* @param data Ryygq,>VD.  
* @param i )FmIL(vu  
* @param j @H3x51PT(m  
* @return kwqY~@W  
*/ ADVS}d!;]  
private int partition(int[] data, int l, int r,int pivot) { k4!_(X%8  
do{ yGSZ;BDW:K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VXlAK(   
SortUtil.swap(data,l,r); lzz;L z  
} )v11j.D  
while(l SortUtil.swap(data,l,r); ms!|a_H7 r  
return l; ywkRH  
} m2YsE  j7  
h{H*k#>  
} -'L~Y~'.  
* hS6F  
改进后的快速排序: +A^|aQ  
r b\t0tg  
package org.rut.util.algorithm.support; Lz p}<B  
tZVs0eVF<  
import org.rut.util.algorithm.SortUtil; ,c0LRO   
1Sza%D;3  
/** v`jHd*&6)  
* @author treeroot bq8Wvlv04  
* @since 2006-2-2 >M!LC  
* @version 1.0 s$(%?,yf2  
*/ lhnGk'@d  
public class ImprovedQuickSort implements SortUtil.Sort { bBXLW}W  
C@Go]*c  
private static int MAX_STACK_SIZE=4096; ,FH1yJ;Y&  
private static int THRESHOLD=10; u??ti OK{  
/* (non-Javadoc) !4FOX>|L@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nT +ZSr  
*/ u<N`;s  
public void sort(int[] data) { q,%Fvcmx+e  
int[] stack=new int[MAX_STACK_SIZE]; /3tErc'  
$~/cxLcT  
int top=-1; r\FZ-gk}Q  
int pivot; = &?&}pVF  
int pivotIndex,l,r; ='=4tj=z  
'1xhP}'3)  
stack[++top]=0; 9Li&0E  
stack[++top]=data.length-1; ;+|Z5+7!6  
XGbpH<  
while(top>0){ 'Ha> >2M  
int j=stack[top--]; vdQ#C G$/  
int i=stack[top--]; dKC*QHU  
7:Rt) EE2  
pivotIndex=(i+j)/2; 3 =c#LUA`  
pivot=data[pivotIndex]; ;m>/tD%  
zK1]o-wSAT  
SortUtil.swap(data,pivotIndex,j); I1l^0@J   
\%bJXTK&W  
file://partition (=fLWK{8  
l=i-1; Lj#xZ!mQS  
r=j; qO8:|q1%;\  
do{ V/#J>-os}W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); afna7TlS  
SortUtil.swap(data,l,r); 5 r_Z3/%  
} x4g/ok  
while(l SortUtil.swap(data,l,r); Ovj^ 7r:<s  
SortUtil.swap(data,l,j); Eu "8IM!%-  
S w%6-  
if((l-i)>THRESHOLD){ Jc}6kFgO6  
stack[++top]=i; FE^/us7r  
stack[++top]=l-1; GG<0k\RN  
} >;Vfs{Z(q  
if((j-l)>THRESHOLD){ &7>]# *  
stack[++top]=l+1; .taP2^2Z  
stack[++top]=j; G!=(^G@J;  
} s3yGL  
 qsXkm4  
} <_Z.fdUA  
file://new InsertSort().sort(data); }YBuS3{  
insertSort(data); -sZ'<(3  
} Fw{#4  
/** p~=z)7% e'  
* @param data ov H'_'  
*/ 7CSz  
private void insertSort(int[] data) { :@"o.8p   
int temp; }$L1A   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q _!tn*  
} 2#3`[+g<n  
} }7b{ZbDI  
} C4`&_yoP4-  
ai1;v@1  
} TQNdBq5I6  
89GW!  
归并排序: XTk :lzFH  
|2n*Ds'  
package org.rut.util.algorithm.support; (Fuu V{x|  
WAR!#E#J7  
import org.rut.util.algorithm.SortUtil; _e ;b B?S  
*i#N50k*j'  
/** 67&Q<`V1*q  
* @author treeroot DNqV]N_W  
* @since 2006-2-2 )V>zXy}Y  
* @version 1.0 do.>Y}d  
*/ ::iYydpM  
public class MergeSort implements SortUtil.Sort{ 4F0w+w JD  
7UG c2J  
/* (non-Javadoc) F.i}&UQ%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Yq?:uBV  
*/ L;?F^RK{U  
public void sort(int[] data) { cJ@fJ|  
int[] temp=new int[data.length]; S{8-XiL,  
mergeSort(data,temp,0,data.length-1); 9a`~ K L  
} #W|Obc]K  
n 3&h1-  
private void mergeSort(int[] data,int[] temp,int l,int r){ RMpiwO^  
int mid=(l+r)/2; :<{ 15:1  
if(l==r) return ; qxAh8RR;/  
mergeSort(data,temp,l,mid); *{k{  
mergeSort(data,temp,mid+1,r); IDw`k[k  
for(int i=l;i<=r;i++){ z"\w9 @W  
temp=data; E3[9!L8gb  
} Pi |Z\j)  
int i1=l; ?u:mscb  
int i2=mid+1; HWB\}jcA6u  
for(int cur=l;cur<=r;cur++){ 9I [:#,zdf  
if(i1==mid+1) 50Gu~No6  
data[cur]=temp[i2++]; _Li.}g@Bd  
else if(i2>r) He4HI Z  
data[cur]=temp[i1++]; 0-{E% k  
else if(temp[i1] data[cur]=temp[i1++]; islHtX VE  
else \o2l;1~  
data[cur]=temp[i2++]; V#.pi zb  
} MZf?48"f  
} N}NKQ]=  
a?GXVQ  
} &Z!y>k%6  
$uFvZ?w&  
改进后的归并排序: cr ]b #z  
ni2 [K`  
package org.rut.util.algorithm.support; dMsS OP0E  
Bsg^[~jWJu  
import org.rut.util.algorithm.SortUtil; .57F h)Y  
"q=ss:(  
/** >@cBDS<6R  
* @author treeroot 8%YyxoCH  
* @since 2006-2-2 M=ag\1S&ZF  
* @version 1.0 fK]%*i_"  
*/ CMbID1M3  
public class ImprovedMergeSort implements SortUtil.Sort { ;Gn>W+Ae M  
4I2:"CK06  
private static final int THRESHOLD = 10; pCo3%(  
6'e^np  
/* /AOGn?Z3  
* (non-Javadoc) <A|z   
* 6LCR ;~ ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m;rr7{7X  
*/ 8tv4_Lbx  
public void sort(int[] data) { C@]D*k  
int[] temp=new int[data.length]; X 5}=|%Y  
mergeSort(data,temp,0,data.length-1); FNOsw\Bo  
} 5bXpj86mY  
ia; osqW  
private void mergeSort(int[] data, int[] temp, int l, int r) { _w %:PnO  
int i, j, k; 09P2<oFLn  
int mid = (l + r) / 2; u9,dSR  
if (l == r) 1'(";  0I  
return; d/Wp>A@dob  
if ((mid - l) >= THRESHOLD) W-|C K&1  
mergeSort(data, temp, l, mid); <P0 P*>M  
else eg?p)|  
insertSort(data, l, mid - l + 1); fr04nl  
if ((r - mid) > THRESHOLD) ;vPFRiFK  
mergeSort(data, temp, mid + 1, r); [4YRyx&:++  
else No[9m_  
insertSort(data, mid + 1, r - mid); 5izpQ'>  
m*jE\+)=^  
for (i = l; i <= mid; i++) { o$%KbfXO]  
temp = data; TNN@G~@cm  
} AX6:*aZB  
for (j = 1; j <= r - mid; j++) { ecH7")  
temp[r - j + 1] = data[j + mid]; R1Q,m  
} U,T#{  
int a = temp[l]; iR{@~JN=)  
int b = temp[r]; hJ[keaO  
for (i = l, j = r, k = l; k <= r; k++) { }1V+8'D  
if (a < b) { JzCkVF$  
data[k] = temp[i++]; ZrNH:Z:5  
a = temp; 3Rsrb  
} else { A['(@Bz#7~  
data[k] = temp[j--]; TC'SDDX  
b = temp[j]; -$=RQH$9  
} v^Fu/Y  
} 62.Cq!~  
} G.@K#a9  
-6s]7#IC  
/** tP2.D:( R  
* @param data '-I\G6w9  
* @param l y,1U]1TP  
* @param i ,|?#+O{  
*/ x5smJ__/  
private void insertSort(int[] data, int start, int len) { lB/ ^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;*FY+jM  
} |9$C%@8  
} - "2 t^ Q  
} %" mki>  
} lWJYT <kt  
,aP5)ZN-  
堆排序: U Rq9:{  
4, Vx3QFZ  
package org.rut.util.algorithm.support; =s'H o  
{|<r7K1<  
import org.rut.util.algorithm.SortUtil; ]c 'EJu  
']c;$wP  
/** iK1{SgXrFI  
* @author treeroot 5"!K8 N  
* @since 2006-2-2 z52F-<  
* @version 1.0 .-MJ5d:  
*/ ;"EDFH#W  
public class HeapSort implements SortUtil.Sort{ Rc D5X{qS#  
Yh"9,Z&wiR  
/* (non-Javadoc) ngd4PN>{4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #wvGS%  
*/ 7J$rA.tu  
public void sort(int[] data) { (M{wkQTO  
MaxHeap h=new MaxHeap(); |d6/gSiF  
h.init(data); ;O,&MR{;|n  
for(int i=0;i h.remove(); =)i^E9  
System.arraycopy(h.queue,1,data,0,data.length); |FlB#  
} RhF< {U.  
mKV31wvK}  
private static class MaxHeap{ pK_zq  
rij%l+%@#  
void init(int[] data){ 'zMmJl}\vd  
this.queue=new int[data.length+1]; F/tRyq`D  
for(int i=0;i queue[++size]=data; Wie0r@5E  
fixUp(size); F8tMZ,:  
} .ty2! .  
} gwg~4:W  
).u>%4=6  
private int size=0; /Hm/%os  
/J!hKK^k  
private int[] queue; &pz`gna  
e,#5I(E  
public int get() { H D$`ZV  
return queue[1]; TI"Ki$jC  
} {LqYb:/C5U  
tId,Q>zH  
public void remove() { lq`7$7-4  
SortUtil.swap(queue,1,size--); @V Tw>=94  
fixDown(1); oHSDi  
} MDd 2B9cy[  
file://fixdown I7|a,Q^f  
private void fixDown(int k) { ev/)#i#s{  
int j; R&P^rrC@B5  
while ((j = k << 1) <= size) { ?aTC+\=  
if (j < size %26amp;%26amp; queue[j] j++; CJ)u#PmkJ  
if (queue[k]>queue[j]) file://不用交换 *?Wr^T  
break; +mKII>{  
SortUtil.swap(queue,j,k); km lb,P  
k = j; a #p`l>rx  
} X ) =-a  
} aGE} EK}  
private void fixUp(int k) { vt(n: Xk  
while (k > 1) { PT&qys 2k  
int j = k >> 1; @&Yl'&pn-R  
if (queue[j]>queue[k]) !>K=@9NC|.  
break; Dp} $q`F[  
SortUtil.swap(queue,j,k); PIQd=%?'  
k = j; qla=LS\-A+  
} b1=! "Y@  
} E J6|y'  
SwrzW'%A  
}  _qt  
'?{L gj^R  
} -I#<?=0B  
m,w^,)  
SortUtil: }>YEtA  
^QHgc_oDm  
package org.rut.util.algorithm; pMUUF5  
y=SpIbn{  
import org.rut.util.algorithm.support.BubbleSort; Y~lOkH[z  
import org.rut.util.algorithm.support.HeapSort; pg<c vok  
import org.rut.util.algorithm.support.ImprovedMergeSort; P{2ED1T\  
import org.rut.util.algorithm.support.ImprovedQuickSort; $3970ni,?O  
import org.rut.util.algorithm.support.InsertSort; ~_-+Q=3  
import org.rut.util.algorithm.support.MergeSort; {K/xI  
import org.rut.util.algorithm.support.QuickSort; ;'<SsI  
import org.rut.util.algorithm.support.SelectionSort; t`V U<  
import org.rut.util.algorithm.support.ShellSort; EzCi%>q  
YsTF10  
/** Ac +fL  
* @author treeroot kO/;lrwC  
* @since 2006-2-2 AVc|(~V  
* @version 1.0 "Vwk&~B%  
*/ [>QzT"=  
public class SortUtil { *;T HD>  
public final static int INSERT = 1; i(q a'*  
public final static int BUBBLE = 2; O G7U+d6  
public final static int SELECTION = 3; v}^uN+a5  
public final static int SHELL = 4; v?DA>  
public final static int QUICK = 5; "!Hm.^1  
public final static int IMPROVED_QUICK = 6; Q 9JT6  
public final static int MERGE = 7;  /zir$  
public final static int IMPROVED_MERGE = 8; ( M3-S5   
public final static int HEAP = 9; 5* ~E dT  
^7$Q"  
public static void sort(int[] data) { GN|xd+O_  
sort(data, IMPROVED_QUICK); VK}H;  
} : +fW#:  
private static String[] name={ u H)v\Js  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Nb>C5TjR  
}; 0qN?4h)7  
a)/ }T  
private static Sort[] impl=new Sort[]{ >- CNHb  
new InsertSort(), +/#Lm#*nu%  
new BubbleSort(), GM@0$  
new SelectionSort(), ;|Rrtf9  
new ShellSort(), ?SoRi</1  
new QuickSort(), hBW,J$B  
new ImprovedQuickSort(), p;2NO&  
new MergeSort(), a 0qDRB  
new ImprovedMergeSort(), *{e,< DV  
new HeapSort() :YmFQ>e?  
}; 9NC'iFQ#  
E I&)+cC  
public static String toString(int algorithm){ l9NET  
return name[algorithm-1]; ^JB5-EtL(  
} P;p20+  
TaTw,K|/  
public static void sort(int[] data, int algorithm) { O-<nL B!Wf  
impl[algorithm-1].sort(data); lhFv2.qR  
} ~NwX,-ri  
$-mwr,i  
public static interface Sort { W -5wjc  
public void sort(int[] data); R%r<AL5kJk  
} L'x[wM0w;  
0tN/P+!|  
public static void swap(int[] data, int i, int j) { p=f8A71  
int temp = data; E uk[ @1  
data = data[j]; hr GfA  
data[j] = temp; fq[,9lK  
} 9m2Yrj93  
} )^Md ^\?  
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