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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。 `d5%.N  
插入排序: Ya3C#=  
(k5We!4[1  
package org.rut.util.algorithm.support; 0i!uUF  
$w2u3 -  
import org.rut.util.algorithm.SortUtil; |}BL F  
/** F\KjEl0  
* @author treeroot bDL,S?@  
* @since 2006-2-2 aX)I3^ar  
* @version 1.0 ,JAx ?Xb  
*/ 6-$jkto  
public class InsertSort implements SortUtil.Sort{ _>(^tCo  
=;Rtdy/Yn%  
/* (non-Javadoc) QbkLdM,S*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -GhP9; d  
*/ [q?<Qe  
public void sort(int[] data) { ,|y:" s  
int temp; WrQDX3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B +\3-q  
}  D~S<U  
} ?!A7rb/tj  
} YIoQL}pX  
GpY"f c%  
} #U! _U+K  
,(d) Qg  
冒泡排序: 6Ypc`  
n}F&1Z  
package org.rut.util.algorithm.support; ,?8qpEG~#+  
$q6BP'7  
import org.rut.util.algorithm.SortUtil; 7K,-01-:  
)h"<\%LU  
/** 8!O5quEc  
* @author treeroot uwzvbgup?  
* @since 2006-2-2 [$0p+1  
* @version 1.0 ~zCEpU|@N  
*/ -JMdE_h  
public class BubbleSort implements SortUtil.Sort{ {.?ZHy\Rk  
*H"B _3<n  
/* (non-Javadoc) -]/I73!b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #lmB AL~3  
*/ >`Y.+4 mE  
public void sort(int[] data) { JjPKR?[>  
int temp; IUE~_7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K1mPr^3rC  
if(data[j] SortUtil.swap(data,j,j-1); *6sl   
} K2M~-S3  
} Cn'(<bl  
} *SU\ABcov  
} U`R5'Tf;  
sqEI4~514  
} $?Yry. 2  
^U `[(kz=  
选择排序: Ixb=L (V  
2|3)S`WZl  
package org.rut.util.algorithm.support; :o0JY= 5  
;&< {ey  
import org.rut.util.algorithm.SortUtil; "?]{ %-u  
LJd5;so-  
/** diJLZikk  
* @author treeroot LLk(l#K*  
* @since 2006-2-2 77C'*tt1]  
* @version 1.0 K&POyOvT  
*/ e- :yb^  
public class SelectionSort implements SortUtil.Sort { w~(1%p/  
.L9j>iP9 *  
/* mg^I=kpk  
* (non-Javadoc) D^yRaP*|7  
* =5J7Hw&K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nygbt<;?  
*/ K&vF0*gN3  
public void sort(int[] data) {  CJ1 7n  
int temp; f sJ9bQm/  
for (int i = 0; i < data.length; i++) { Dd'm U  
int lowIndex = i; :o|\"3  
for (int j = data.length - 1; j > i; j--) { \w/yF4,3<w  
if (data[j] < data[lowIndex]) { `IP/d  
lowIndex = j; +ln9c  
} +]*zlE\N`  
} ozmrw\_}[  
SortUtil.swap(data,i,lowIndex); UJD 0K]s  
} [$qyF|/K`n  
} v25R_""~  
7|{}\w(I  
} ;nep5!s;<  
&~8oQC-eF  
Shell排序: N >FKy'.gk  
uD\?(LM  
package org.rut.util.algorithm.support; <v)1<*I  
DK$X2B"cV  
import org.rut.util.algorithm.SortUtil; DgUT5t1  
RHmgD;7`  
/** cJ{ Nh;"  
* @author treeroot I;e=0!9U  
* @since 2006-2-2 &ib5* 4!  
* @version 1.0 ,5i`-OI  
*/ W#^2#sjO  
public class ShellSort implements SortUtil.Sort{ 0 t Fkd  
^A!Qc=#z}  
/* (non-Javadoc) ;T"zV{;7BR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"E%xM*r  
*/ -&NN51-d\j  
public void sort(int[] data) { 6VS4y-N  
for(int i=data.length/2;i>2;i/=2){ wP6 Fl L  
for(int j=0;j insertSort(data,j,i); QN #U)wn:  
} "U e. @>  
} K~AR*1??[  
insertSort(data,0,1); 5*+!+V^?X  
} (zgW%{V@  
fmQ_P.c  
/** BcL{se9<  
* @param data k jg~n9#T  
* @param j 5* j?E  
* @param i wLi4G@jJ  
*/ 3jGWkby0  
private void insertSort(int[] data, int start, int inc) { Y'1S`.  
int temp; gbI^2=YT'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mkYqpD7  
} Sm)Ha:[4  
} hWM< 0=  
} % 5m/  
qAAX;N  
} Ir {OheJ  
ruc++@ J@  
快速排序: 1$D_6U:H0  
+b.g$CRr  
package org.rut.util.algorithm.support; .LZwuJ^;  
).Fpgxs  
import org.rut.util.algorithm.SortUtil; ySx>L uY#3  
|%J{RA  
/** -7*ET3NSI/  
* @author treeroot 4[;X{ !  
* @since 2006-2-2 F<L EQ7T  
* @version 1.0 :e_V7t)o  
*/ V,mw[Hw  
public class QuickSort implements SortUtil.Sort{ }j^i}^Du,  
IAw{P08+  
/* (non-Javadoc) kddZZA3`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6eT5ktf  
*/ ]ro*G"-_1#  
public void sort(int[] data) { SLkhCR  
quickSort(data,0,data.length-1); VRI0W`  
} OHeT,@(mh  
private void quickSort(int[] data,int i,int j){ [Grxw[(_:  
int pivotIndex=(i+j)/2; Fgp]l2*  
file://swap mp=z  
SortUtil.swap(data,pivotIndex,j); !D@ZYK;  
7uKNd *%  
int k=partition(data,i-1,j,data[j]); { &"CH]r  
SortUtil.swap(data,k,j); X#*JWQO=  
if((k-i)>1) quickSort(data,i,k-1); U> cV|  
if((j-k)>1) quickSort(data,k+1,j); N"" BCh"  
N.\- 8?>  
} H7d/X  
/** +wEac g>>E  
* @param data mzeY%A<0^  
* @param i bL'aB{s  
* @param j #pb92kA'  
* @return e4!:c^?  
*/ }])oM|fgO  
private int partition(int[] data, int l, int r,int pivot) { )\eI;8  
do{ s!?`T1L  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lBK}VU^  
SortUtil.swap(data,l,r); AfX}y+Ah  
} 8vMG5#U[  
while(l SortUtil.swap(data,l,r); -*$HddD  
return l; L\@I*QP  
} G_0( |%  
jzDuE{  
} d Vj_8>  
;nodjbr,j  
改进后的快速排序: tKuVQH~D  
ToJ$A`_!`  
package org.rut.util.algorithm.support; z.kvX+7'  
b6U2GDm\s  
import org.rut.util.algorithm.SortUtil; Y&S24aql  
(Dw,DY9  
/** [<%H>S1  
* @author treeroot bmfI~8  
* @since 2006-2-2 |$vX<. S  
* @version 1.0 {[+mpKq  
*/ ZZHDp&lh}  
public class ImprovedQuickSort implements SortUtil.Sort { ]L9s%]o  
DVSL [p?_  
private static int MAX_STACK_SIZE=4096; 0s/w,?  
private static int THRESHOLD=10; Hkwl>R$  
/* (non-Javadoc) E^.nc~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Pbk#|$rU  
*/ Nd$W0YN:  
public void sort(int[] data) { U%<koD[,  
int[] stack=new int[MAX_STACK_SIZE]; }s(N6a&(  
~\Hc,5G  
int top=-1; aMtsmL?=  
int pivot; JT3-AAi[Z  
int pivotIndex,l,r; ^>i63Yc  
K_RjX>q%N  
stack[++top]=0; +89*)pk   
stack[++top]=data.length-1; sE:M@`2L  
`%+Wz0(K  
while(top>0){ g/P+ZXJ  
int j=stack[top--]; -(  
int i=stack[top--]; 9aze>nxh.  
jz qyk^X  
pivotIndex=(i+j)/2; %p2Sh)@M  
pivot=data[pivotIndex]; y+"X~7EX  
)iYxt:(,  
SortUtil.swap(data,pivotIndex,j); , Wk?I%>  
]j`c]2EuP  
file://partition ~:Ll&29i  
l=i-1; SKkUU^\#R`  
r=j; nEJY5Bz$  
do{ n 2)@S0{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tasUZ#\6  
SortUtil.swap(data,l,r); BW 4%l  
} 9{ >Ui  
while(l SortUtil.swap(data,l,r); .^h#_[dp  
SortUtil.swap(data,l,j); U56G.  
G LIi6  
if((l-i)>THRESHOLD){ aqj@Cjk4Z  
stack[++top]=i; ,.OERw  
stack[++top]=l-1; (NF~Ck$#q  
} _3TY,l~  
if((j-l)>THRESHOLD){ )N7Y^CN~  
stack[++top]=l+1; Qa-K$dm%  
stack[++top]=j; sj HrPs e  
} I'uSp-Sfy  
mt,OniU=Q  
} 0=AVW`J  
file://new InsertSort().sort(data); BT}!W`  
insertSort(data); 3E!|<q$ z  
} ~N<4L>y<  
/** z([ v%zf  
* @param data 7f0lQ  
*/ K`u(/kz/<  
private void insertSort(int[] data) { `HZ;NRr  
int temp; |}(`kW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FaDjLo2'o  
} |wH5sjT  
} ,*7 (%k^`  
} :lf+W  
rA%usaW  
} `$W_R[  
$Zug Bh[b  
归并排序: Cjc6d4~  
Gn ~6X-l  
package org.rut.util.algorithm.support; G!>z;5KuS  
@ycDCB(D}  
import org.rut.util.algorithm.SortUtil; ??M"6k  
j4|N- :  
/** 8~J(](QA  
* @author treeroot 0yuS3VY)  
* @since 2006-2-2 {^\+iK4bS  
* @version 1.0 qI#;j%V  
*/ +trC,D  
public class MergeSort implements SortUtil.Sort{ e?JW   
1~Oe=`{&  
/* (non-Javadoc) `w.n]TR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"bHe/'CI  
*/ JM x>][xD  
public void sort(int[] data) { pe]A5\4c  
int[] temp=new int[data.length]; 60J;sGW  
mergeSort(data,temp,0,data.length-1); H!5\v"]WB  
} :6vm+5!  
4^WpS/#4  
private void mergeSort(int[] data,int[] temp,int l,int r){ E\as@pqo\p  
int mid=(l+r)/2; mOy^vMa  
if(l==r) return ; 3%E }JU?MM  
mergeSort(data,temp,l,mid); +a^nlW9g  
mergeSort(data,temp,mid+1,r); bN]+_ mF  
for(int i=l;i<=r;i++){ '8!Y D?n  
temp=data; PIu1+k.r?  
} yku5SEJ\  
int i1=l; 0 q} *S~  
int i2=mid+1; vms|x wb  
for(int cur=l;cur<=r;cur++){ $~VRza 8Q  
if(i1==mid+1) JtEo'As:[  
data[cur]=temp[i2++]; 1IC~e^"  
else if(i2>r) 5ni~Q 9b  
data[cur]=temp[i1++]; T 6)bD&  
else if(temp[i1] data[cur]=temp[i1++]; b{L/4bu  
else 5nT"rA  
data[cur]=temp[i2++]; j bVECi-  
} 9Uj $K>:  
} &PYK8}pBk3  
N G "C&v  
} r'^Hg/Jzt  
G,o6292hj  
改进后的归并排序: E"qRw_ ~t  
kYG/@7f/  
package org.rut.util.algorithm.support; QPx_-  
PsnWWj?c  
import org.rut.util.algorithm.SortUtil; D^l%{IG   
$8 UUzk  
/** CE#gfP  
* @author treeroot jcuB  
* @since 2006-2-2 /{+y2.{j  
* @version 1.0 D8Ykg >B;&  
*/ 95 ;x=ju  
public class ImprovedMergeSort implements SortUtil.Sort { B@&4i?yJ  
M?Dfu .t  
private static final int THRESHOLD = 10; DI:]GED" =  
QZ6D7t Uc8  
/* pR(jglm7-  
* (non-Javadoc) NidIVbT.A  
* B8f8w)m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `|{-+m  
*/ _P0T)-X\(  
public void sort(int[] data) { "e.jZcN*  
int[] temp=new int[data.length]; B* ?]H*K  
mergeSort(data,temp,0,data.length-1); DJ'zz&K  
} coW:DFX  
_I@9HC 4  
private void mergeSort(int[] data, int[] temp, int l, int r) { Fv~20G (O  
int i, j, k; YC++& Nk  
int mid = (l + r) / 2; ;j[>9g  
if (l == r) h"X;3b^ m  
return; &,zq%;-f  
if ((mid - l) >= THRESHOLD) |bTPtrT8  
mergeSort(data, temp, l, mid); G`cHCP_n  
else ZA0mz 65  
insertSort(data, l, mid - l + 1); vHyC;4'  
if ((r - mid) > THRESHOLD) zHA!%>%'  
mergeSort(data, temp, mid + 1, r); R3x3]]D  
else qTdheX/  
insertSort(data, mid + 1, r - mid); W>) M5t4i  
K^1oDP  
for (i = l; i <= mid; i++) { 5gYRwuf  
temp = data; &e E=<x  
} 0z1ifg&  
for (j = 1; j <= r - mid; j++) { 0 ?s|i :  
temp[r - j + 1] = data[j + mid]; %j.0G`x9 +  
} t{xf:~B  
int a = temp[l]; zk$FkbX  
int b = temp[r]; OI|[roMK  
for (i = l, j = r, k = l; k <= r; k++) { b$N 2z  
if (a < b) { 9IjIIM2y  
data[k] = temp[i++]; yA)/Q Yge  
a = temp; \pPY37l  
} else { X <f8,n  
data[k] = temp[j--]; mk.9OhYY  
b = temp[j]; uatm/o^~,  
} l4F%VR4KT  
} 2BQ j  
} q]T1dz?  
z[b@ V  
/** iW$_zgN  
* @param data d' !]ZWe  
* @param l A,JmX  
* @param i ns9U/ :L  
*/ /rK}?U  
private void insertSort(int[] data, int start, int len) { (?n=33}Ci  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8EW_V$>R  
} f.D?sHAn  
} [%q@]\U$s  
} dq(uVW^&ae  
} a zCf  
;&9)I8Us  
堆排序: gH12[Us'`  
/s x@$cvW  
package org.rut.util.algorithm.support; JZ)RGSG i  
)#?"Gjf~  
import org.rut.util.algorithm.SortUtil; j'Gt&\4  
PQy4{0 _  
/** -.1y(k^4E  
* @author treeroot '*K:  lx  
* @since 2006-2-2 Bal$+S  
* @version 1.0 GzhYY"iif#  
*/ J?V?R  
public class HeapSort implements SortUtil.Sort{ ^yWL,$  
r(:5kC8K  
/* (non-Javadoc) wo4;n9@I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h{%nC>m;  
*/ e^8 O_VB  
public void sort(int[] data) { c23oCfB>  
MaxHeap h=new MaxHeap(); um jt]Gu[  
h.init(data); }q_<_lQ  
for(int i=0;i h.remove(); IdzxS  
System.arraycopy(h.queue,1,data,0,data.length); qraSRK5  
} gH$ Mr  
p)`{Sos  
private static class MaxHeap{ `.E[}W  
\HqNAE2T  
void init(int[] data){ SEo'(-5  
this.queue=new int[data.length+1]; tI`Q/a5@  
for(int i=0;i queue[++size]=data; BBaQ}{F8>2  
fixUp(size); APvDP?  
} o*-)Tq8GHE  
} U_M$#i{_  
'}9x\3E  
private int size=0; hpHr\g  
qyZ" %Kz  
private int[] queue; =b%MXT  
1a?!@g )  
public int get() { O9G[j=U  
return queue[1]; qU+t/C.  
} VrHv)lUr  
m}C>ti`VD  
public void remove() { ap.K=-H  
SortUtil.swap(queue,1,size--); rA3$3GLQ-  
fixDown(1); Jb0`42  
} tRs [ YK  
file://fixdown p)jk>j B  
private void fixDown(int k) { rV2WnAb[H&  
int j; -z-C*%~  
while ((j = k << 1) <= size) { *F+KqZ.2  
if (j < size %26amp;%26amp; queue[j] j++; )P%ZA)l%_o  
if (queue[k]>queue[j]) file://不用交换 lG9bLiFY  
break; eX?OYDDC0j  
SortUtil.swap(queue,j,k); Tl%`P_J)-S  
k = j; 02f~En}>6  
} 4QH3fTv   
} !02`t4Zc-  
private void fixUp(int k) { ~Y`ldL  
while (k > 1) { ,`|3KE9  
int j = k >> 1; lsJSYJG&  
if (queue[j]>queue[k]) LzG%Z1`  
break; Z~AO0zUKY  
SortUtil.swap(queue,j,k); AS!?q  
k = j; n4s+>|\M  
} ];VA!++  
} Q! o'}nA  
-C;^ 3R[ O  
} m!gz3u]rN  
?h3Y)5xT  
} 9{'N{  
aAZZ8V  
SortUtil: }{,^@xdyW  
FTX=Wyr  
package org.rut.util.algorithm; n3T>QgK  
EOIN^4V"  
import org.rut.util.algorithm.support.BubbleSort; :yL] ;J  
import org.rut.util.algorithm.support.HeapSort; ed]=\Key  
import org.rut.util.algorithm.support.ImprovedMergeSort; i@C].X  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]}Mj)J"m  
import org.rut.util.algorithm.support.InsertSort; US+Q~GTA  
import org.rut.util.algorithm.support.MergeSort; .?D7dyU l1  
import org.rut.util.algorithm.support.QuickSort; f~t:L, \,  
import org.rut.util.algorithm.support.SelectionSort; ^?-:'<4q$  
import org.rut.util.algorithm.support.ShellSort; Ye\rB\-  
S{Kiy#ltWc  
/** ?[VM6- &  
* @author treeroot &c`nR<  
* @since 2006-2-2 &SIq2>QA  
* @version 1.0 dV*]f$wQ  
*/ Gk. ruQW"  
public class SortUtil { |!1Y*|Q%s  
public final static int INSERT = 1; (jnzT=y  
public final static int BUBBLE = 2; [/PR\'|  
public final static int SELECTION = 3; ")_|69 VX  
public final static int SHELL = 4; =qoWCmg"&  
public final static int QUICK = 5; ls?~+\Jb  
public final static int IMPROVED_QUICK = 6; 3oBtP<yG.  
public final static int MERGE = 7; $'0u|Xy`  
public final static int IMPROVED_MERGE = 8; %r<rcY  
public final static int HEAP = 9; I.WvLLK2  
XQrF4l  
public static void sort(int[] data) { 4{}FL  
sort(data, IMPROVED_QUICK); 9?A)n4b;  
} aB*Bz]5;E  
private static String[] name={ 5<iV2Hx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ) mI05  
}; }Q)#[#e  
~t@cO.c  
private static Sort[] impl=new Sort[]{ XpIklL7  
new InsertSort(), Km%]1X7T6  
new BubbleSort(), P!~MZ+7#&  
new SelectionSort(), GSY(  
new ShellSort(), P]<4R:yb  
new QuickSort(), <m!h&_eg  
new ImprovedQuickSort(), tf =6\p  
new MergeSort(), !!qK=V|>  
new ImprovedMergeSort(), u~r=)His  
new HeapSort() heltgRt  
}; @v$Y7mw3D  
bo<~jb{  
public static String toString(int algorithm){ q?,).x nN  
return name[algorithm-1]; kJWn<5%ayg  
} K}2Erm%A@y  
(ScxLf=]  
public static void sort(int[] data, int algorithm) { #&cI3i  
impl[algorithm-1].sort(data); hMzs*gK  
} x* DarSk  
g6W)4cC8a  
public static interface Sort { S_iMVHe  
public void sort(int[] data); HvUxsdT  
} YSs)HV.8  
062,L~&E  
public static void swap(int[] data, int i, int j) { "MxnFeLM#  
int temp = data; 9lTv   
data = data[j];  ^le<}  
data[j] = temp; zuP B6W^  
} *aXF5S  
} >@BnV{ d  
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