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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。 ,")F[%v  
插入排序: 6P+DnS[]  
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package org.rut.util.algorithm.support; S< x:t(  
4/MNqit+  
import org.rut.util.algorithm.SortUtil; u~'OcO  
/** T]71lRY5  
* @author treeroot gX*K&*q   
* @since 2006-2-2 gaeOgP.0  
* @version 1.0 J}@GKNm  
*/ rYGRz#:~+  
public class InsertSort implements SortUtil.Sort{ hKksVi  
Q]\j>>  
/* (non-Javadoc) IJPgFZ7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) se,Z#H  
*/ .,mPdVof  
public void sort(int[] data) { (hf zM+2  
int temp; ']?=[`#NL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y6VQ:glDT-  
} J Jy{@[m  
} CEqZ:c  
} r~oSP^e'  
(~#G'Hd  
} }1m_o@{3P  
7a<_BJXx  
冒泡排序: xNgt[fLpS  
c{>|o  
package org.rut.util.algorithm.support; (6k>FSpg  
\_ -DyD#3  
import org.rut.util.algorithm.SortUtil; F]5\YYXO  
I:t^S.,  
/** 0<&M?^  
* @author treeroot w3bIb$12  
* @since 2006-2-2 Ae3,^  
* @version 1.0 YMu)  
*/ a8JN19}D  
public class BubbleSort implements SortUtil.Sort{ N!m%~kS9k<  
{!=2<-Aq  
/* (non-Javadoc) r}EM4\r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uaxB -PZ  
*/ :qnokrGzB  
public void sort(int[] data) { rzV"Dm$'  
int temp; 7bT /KLU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F^rl$#pCS  
if(data[j] SortUtil.swap(data,j,j-1); AgsR-"uh  
} W)-hU~^OM  
} kfCKhx   
} wLMvC{5  
} bi,mM,N/  
Ab g$W/(|  
} W5/};K\.  
evOb  
选择排序: 7@P656{  
h5!d  
package org.rut.util.algorithm.support; \)R-A '*U  
e\.HWV]I  
import org.rut.util.algorithm.SortUtil; |nm2Uy/0  
$ !5f"<FCB  
/** c[{UI  
* @author treeroot a: IwA9!L  
* @since 2006-2-2 `M rBav  
* @version 1.0 gj;@?o0  
*/ if@,vc  
public class SelectionSort implements SortUtil.Sort {  /q*KO\L  
8IJ-]wHIb  
/* {8:o?LnMW  
* (non-Javadoc) ^&m?qKN8  
* d*%Mv[X:<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rIlBH*aT  
*/ 5_aw. s>  
public void sort(int[] data) { $e1:Q#den2  
int temp; V6+Zh>'S  
for (int i = 0; i < data.length; i++) { %EoH4LzT  
int lowIndex = i; H),RA]S  
for (int j = data.length - 1; j > i; j--) { CJA+v-  
if (data[j] < data[lowIndex]) { KZ3B~#oQ  
lowIndex = j; F[`vH  
} `[@VxGy_  
} yFO)<GLk  
SortUtil.swap(data,i,lowIndex); :gaETr  
} o^PuhVu  
} w, 7Cr  
{]["6V6W  
} *(nJX.7  
+-P<CCvWz  
Shell排序: i[_| %'p  
o=mo/N4  
package org.rut.util.algorithm.support; pK"&QPv  
D1ZC&B_}-  
import org.rut.util.algorithm.SortUtil; /.v_N%*-v  
:rL?1"   
/** uk6g s)qxC  
* @author treeroot %,;gP.dh7  
* @since 2006-2-2 %/%gMRXG2  
* @version 1.0 ucM.Ro=@  
*/ ~o Fh>9u  
public class ShellSort implements SortUtil.Sort{ -lnevrl   
+"Ub/[J{G1  
/* (non-Javadoc) +!xu{2!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {? 2;0}3?;  
*/ d<v~=  
public void sort(int[] data) { j%5a+(H,z;  
for(int i=data.length/2;i>2;i/=2){ to51hjV  
for(int j=0;j insertSort(data,j,i); u GIr&`S  
} ol#yjrv  
} +,wWhhvlzv  
insertSort(data,0,1); B~rU1Y)  
} <S{7Ro  
e?1KbJ?.  
/** m0C{SBn-M  
* @param data +9_,w bF  
* @param j '$*[SauAG  
* @param i V" }*"P-%  
*/ 6lZGcRO  
private void insertSort(int[] data, int start, int inc) { }Az'Zu4 =  
int temp;  z \^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Se/ss!If  
} Iy.mVtcsZ  
} ^Rk^XQCh  
} %HVD^. V  
l# BZzJ?~  
} & L'6KEahR  
VH<e))5C  
快速排序: S[sr 'ZW  
I3An57YV].  
package org.rut.util.algorithm.support; 5f{wJb2  
[x|)}P7%s  
import org.rut.util.algorithm.SortUtil; w_!%'9m>  
/]g>#J%b  
/** My],6va^  
* @author treeroot EO"6Dq(  
* @since 2006-2-2 V:8@)Hc=  
* @version 1.0 jf8w7T  
*/ kAt RY4p  
public class QuickSort implements SortUtil.Sort{ [!Ao,rt?Vg  
+9jivOmK  
/* (non-Javadoc) ;da4\bppt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Rf^P(  
*/ 3wo'jOb  
public void sort(int[] data) { I<KCt2:X  
quickSort(data,0,data.length-1); ovSH}h!  
} P]- #wz=S  
private void quickSort(int[] data,int i,int j){ ~Q0&P!k  
int pivotIndex=(i+j)/2; V4Qz*z%  
file://swap -zR.'x%  
SortUtil.swap(data,pivotIndex,j); 1[px`%DR~  
^} tuP  
int k=partition(data,i-1,j,data[j]); s*eyTm  
SortUtil.swap(data,k,j); Z) t{JHm:  
if((k-i)>1) quickSort(data,i,k-1); "H@Fe  
if((j-k)>1) quickSort(data,k+1,j); A`g.[7  
-FaaFw:Z;A  
} :k\} I k  
/** r;$r=Ufr  
* @param data /0-\ek ye  
* @param i eq{ [?/  
* @param j N|o> %)R  
* @return ys/vI/e\  
*/ =CEHRny  
private int partition(int[] data, int l, int r,int pivot) { 2zM-Ob<U`  
do{ ,, 7.=#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l*qk1H"g  
SortUtil.swap(data,l,r); \UhGGg%  
} R7,p ukK  
while(l SortUtil.swap(data,l,r); UL[uh@4  
return l; b70AJe=  
} SbCJ|z#?  
5e)i!;7Uv  
} >r~|1kQ.  
y=wdR|b  
改进后的快速排序: ^SgN(-QH  
$.;iu2iyo  
package org.rut.util.algorithm.support; aI 7Xq3  
k 5t{  
import org.rut.util.algorithm.SortUtil; t={poQC~  
+hZ] B<$  
/** :)j7U3u  
* @author treeroot |K6nOX!i  
* @since 2006-2-2 !#C)99L"F  
* @version 1.0 w gmWo8  
*/ yX`J7O{=  
public class ImprovedQuickSort implements SortUtil.Sort { UYH|?Jw!N  
:bI,rEW#_  
private static int MAX_STACK_SIZE=4096; " xlJs93c  
private static int THRESHOLD=10; }=TqJy1  
/* (non-Javadoc) t Z+0}d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mqubXS;J|P  
*/ + 2OZJVJ  
public void sort(int[] data) { ~R)1nN|  
int[] stack=new int[MAX_STACK_SIZE]; X"wF Qa  
vu44!c@  
int top=-1; 1T:)Zv'  
int pivot; _@7(g(pY 3  
int pivotIndex,l,r; OW?uZ<z  
>=bt   
stack[++top]=0; `..EQ BM  
stack[++top]=data.length-1; dWMccn;-m  
3F;EE:  
while(top>0){ [1e.i  
int j=stack[top--]; `Y0fst<,  
int i=stack[top--]; ]!q }|bP  
/\nJ  
pivotIndex=(i+j)/2; ~ 0av3G  
pivot=data[pivotIndex]; 8 qn{  
$tEdBnf^ca  
SortUtil.swap(data,pivotIndex,j); HhzkMJR8  
Ca$y819E2  
file://partition x-tm[x@;o  
l=i-1; W31LNysH!;  
r=j; BEFe~* ~  
do{ \m@] G3=]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /FoUo   
SortUtil.swap(data,l,r); D\@e{.$MZ|  
} )gL&   
while(l SortUtil.swap(data,l,r); xAeZ7.Q&  
SortUtil.swap(data,l,j); {`($Q$Q1  
}#1U D  
if((l-i)>THRESHOLD){ u}^a^B$  
stack[++top]=i; "4KkKi  
stack[++top]=l-1; o7m99(  
} 7ZL,p:f  
if((j-l)>THRESHOLD){ !Jk(&.  
stack[++top]=l+1; MiRibHXI,  
stack[++top]=j; fLLnf].O  
} E {I)LdAqK  
D1oaG0  
} od;Bb  
file://new InsertSort().sort(data); d&O'r[S  
insertSort(data); #( $k 3OA  
} oXnC "y}0P  
/** 5w]DncdQ~  
* @param data Q]yV:7  
*/ L[`R8n1C  
private void insertSort(int[] data) { SJso'6 g  
int temp; K-N]h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A9NOeE  
} +8MW$ m$  
} H(  
} =1%zI%  
iK$Vd+Lgc  
} f6keWqv<GW  
 JsZAP  
归并排序: 45]Ym{]  
7f.4/x^  
package org.rut.util.algorithm.support; !%SdTaC{T  
)6O\WB|  
import org.rut.util.algorithm.SortUtil; %i;r]z-  
{JCSR2BB  
/** v!WU |=u  
* @author treeroot QC$=Fs5+  
* @since 2006-2-2 W;xW: -  
* @version 1.0 "`gfy  
*/ e[d7UV[Knn  
public class MergeSort implements SortUtil.Sort{ Zkwy.Hq^  
)^*9oqQ  
/* (non-Javadoc) ?$>u!V<'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .=.yZ  
*/ =;~%L  
public void sort(int[] data) { z ^gDbXS  
int[] temp=new int[data.length]; "Nk=g~|  
mergeSort(data,temp,0,data.length-1); F'$9en2I:  
} M=" WUe_  
> gA %MT  
private void mergeSort(int[] data,int[] temp,int l,int r){ U08<V:~  
int mid=(l+r)/2; 9}K(Q=  
if(l==r) return ; ]# tGT0   
mergeSort(data,temp,l,mid); $Uv<LVd(  
mergeSort(data,temp,mid+1,r); YR^Ee8_H  
for(int i=l;i<=r;i++){ l%-67(  
temp=data; ^.pE`l%1}  
} [ZL r:2+z  
int i1=l; ;o~+2Fir  
int i2=mid+1; ~frPV8^DP  
for(int cur=l;cur<=r;cur++){ 23B^g  
if(i1==mid+1) @p9e:[  
data[cur]=temp[i2++]; +X2 i/}  
else if(i2>r) k1QpX@  
data[cur]=temp[i1++]; ];d5X  
else if(temp[i1] data[cur]=temp[i1++]; i_oro "%yL  
else wiK@o$S-  
data[cur]=temp[i2++]; lOowMlf@2  
} W TXD4}  
} w@ gl  
`? 9] '  
} f)u*Q!BDD  
%x cM_|AyR  
改进后的归并排序: <3],C)Zwc  
=F^->e0N  
package org.rut.util.algorithm.support; )7Hon  
"NX m\`8  
import org.rut.util.algorithm.SortUtil; hJ$C%1;  
jm#F*F vL  
/** Q G=-LXv:@  
* @author treeroot MA/"UV&M(  
* @since 2006-2-2 VOowA^  
* @version 1.0 4 _c:Vl  
*/ Se;?j-  
public class ImprovedMergeSort implements SortUtil.Sort { e"v[)b++Y  
 Rsa\V6N>  
private static final int THRESHOLD = 10; *_"c! eW  
ul z\x2[Pf  
/* clR?< LO  
* (non-Javadoc) Y*5@|Q  
* &2<&X( )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {"gyXDE1  
*/ Xn ZX *Y]"  
public void sort(int[] data) { @ ^XkU(m  
int[] temp=new int[data.length]; R&x7Iq:=D  
mergeSort(data,temp,0,data.length-1); ]P}K3tN%]  
} 4}r\E,`*X  
|)!k @?_  
private void mergeSort(int[] data, int[] temp, int l, int r) { alb+R$s  
int i, j, k; Yt O@n@1  
int mid = (l + r) / 2; u75)>^:I   
if (l == r) <L!~f`nH2  
return; U4^p({\|-  
if ((mid - l) >= THRESHOLD) ]U^d1&k  
mergeSort(data, temp, l, mid); >2/wzsW  
else QBPvGnb  
insertSort(data, l, mid - l + 1); ^ T:qT*v  
if ((r - mid) > THRESHOLD) %x'bo>h@  
mergeSort(data, temp, mid + 1, r); ;I`,ZKY  
else |Ad6~E+aL-  
insertSort(data, mid + 1, r - mid); ]\os`At  
:>er^\  
for (i = l; i <= mid; i++) { \0^rJ1*  
temp = data; X,JWLS J  
} 0,L$x*Nj5  
for (j = 1; j <= r - mid; j++) { H[_uVv;}6  
temp[r - j + 1] = data[j + mid]; K#6`LL m  
} iEJQ#5))0  
int a = temp[l]; Ei?9M^w  
int b = temp[r]; :)+@qxTy  
for (i = l, j = r, k = l; k <= r; k++) { } {gWTp  
if (a < b) { oZ*=7u  
data[k] = temp[i++]; _?(hWC"0  
a = temp; }Nd`;d  
} else { >m_ p\$_  
data[k] = temp[j--]; ;SlS!6.W-  
b = temp[j]; S'%cf7Z  
}  8H%I|fm  
} g_Dt} !A\B  
} Z 9 q{r s  
HA3SQ  
/** @L>NN>?SGQ  
* @param data -Y jv&5  
* @param l 0@mX4.!  
* @param i 8)q]^  
*/ yZ(Nv $[5  
private void insertSort(int[] data, int start, int len) { +N(YR3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i6g[E 4nk  
} 1A/c/iC  
} ncw?;  
} c^[1]'y  
} .5[LQR  
!MF"e|W  
堆排序: [;V1y`/K1  
Er)_[^) HG  
package org.rut.util.algorithm.support; [nPzh Xs  
h7W%}6Cqkw  
import org.rut.util.algorithm.SortUtil; f'i8Mm4IL  
]stLC; nI  
/** g`5`KU|  
* @author treeroot W|-N>,G  
* @since 2006-2-2 l]kl V+9t  
* @version 1.0 Bg+]_:<U  
*/ s=%+o& B  
public class HeapSort implements SortUtil.Sort{ J:-TINeB  
C+#;L+$Gi  
/* (non-Javadoc) 3W0E6H"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1~xn[acy  
*/ 3RH# e1Y  
public void sort(int[] data) { neY=:9  
MaxHeap h=new MaxHeap(); zs]/Y2  
h.init(data); LG@c)H74  
for(int i=0;i h.remove(); }A'<?d8   
System.arraycopy(h.queue,1,data,0,data.length); Hb AMoow!  
} MCrO]N($b  
5vh"PlK`s  
private static class MaxHeap{ xMfv&q=k@  
b=QGbFf  
void init(int[] data){ 6`5 @E\"E  
this.queue=new int[data.length+1]; #ZnX6=;X  
for(int i=0;i queue[++size]=data; `Py= ?[cD  
fixUp(size); 3_eml\CY  
} /&!d  
} ZEyGqCf3  
R#Nd|f<  
private int size=0; oQjB&0k4  
gc8PA_bFz  
private int[] queue; 1q233QSW)  
~G ^}2#5  
public int get() { 53+rpU_  
return queue[1]; d_7Xlp@  
} VU0tyj$  
J)yy}[Fx  
public void remove() { lbuW*)  
SortUtil.swap(queue,1,size--); Lvj5<4h;  
fixDown(1); m<'xlF  
} Md?bAMnG+}  
file://fixdown .8PO7#  
private void fixDown(int k) { 't%%hw-m}  
int j; %d#)({N  
while ((j = k << 1) <= size) { $J0~2TV<  
if (j < size %26amp;%26amp; queue[j] j++; B[_bJ *  
if (queue[k]>queue[j]) file://不用交换 >0+|0ba  
break; c+i`Zd.m<  
SortUtil.swap(queue,j,k); cxJK>%84  
k = j; .s*EV!SE  
} ?kFCYZK|"  
} K,,@',  
private void fixUp(int k) { Q|H cg|  
while (k > 1) { /,@v"mE7c!  
int j = k >> 1; &MQt2aL  
if (queue[j]>queue[k]) MbFe1U]B  
break; 6'*Uo:]  
SortUtil.swap(queue,j,k); |>}0? '/]  
k = j; WKJL< D ]:  
} }nY^T&?`  
} KJJb^6P48W  
`rdfROKv  
} WAmoKZw2  
R6$F<;nw  
} #bZ=R  
w~KBk)!*  
SortUtil: pBnf^Ew1  
-GWzMBS S  
package org.rut.util.algorithm; pfQZ|*>lkb  
x)wt.T?eL  
import org.rut.util.algorithm.support.BubbleSort; ~)8i5p;P/k  
import org.rut.util.algorithm.support.HeapSort; |Ge/|;.v`  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3a)Q:#okD  
import org.rut.util.algorithm.support.ImprovedQuickSort; v4##(~Tu  
import org.rut.util.algorithm.support.InsertSort; n_&)VF#n(  
import org.rut.util.algorithm.support.MergeSort; %s :  
import org.rut.util.algorithm.support.QuickSort; H_=[~mJ  
import org.rut.util.algorithm.support.SelectionSort; NEou2y+}  
import org.rut.util.algorithm.support.ShellSort; W#_gvW  
vMdhNOU  
/** V >uW|6  
* @author treeroot fX$4TPy(h  
* @since 2006-2-2 -qP[$Q  
* @version 1.0 fQ_8{=<-&X  
*/ WCl;#=  
public class SortUtil { X6*y/KG N  
public final static int INSERT = 1; &r5%WRzpYT  
public final static int BUBBLE = 2; +siNU#!  
public final static int SELECTION = 3; 8Y~T$Yj^  
public final static int SHELL = 4; >upUY(3&  
public final static int QUICK = 5; RkP|_Bf8)  
public final static int IMPROVED_QUICK = 6;  mFoK76  
public final static int MERGE = 7; DSZhl-uGM  
public final static int IMPROVED_MERGE = 8; AbI*/ |sY  
public final static int HEAP = 9; 4x?u5L 9o  
9.#R?YP$  
public static void sort(int[] data) { L\b_,'I  
sort(data, IMPROVED_QUICK); A'-YwbY  
} C{,] 1X6g  
private static String[] name={ zYF&Dv/u/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )0d".Q|v4  
}; bK;a V&  
(ai-n,y  
private static Sort[] impl=new Sort[]{ |A/_Qe|s2  
new InsertSort(), |Pl{Oo+  
new BubbleSort(), [Q_| 6Di  
new SelectionSort(), Ul0<Zxv  
new ShellSort(), LF.~rmPa  
new QuickSort(), HtYR 0J  
new ImprovedQuickSort(), 4m!3P"$  
new MergeSort(), j?hyN@ns  
new ImprovedMergeSort(), pz}hh^]t  
new HeapSort() tUF]f6  
}; 1gej$G@  
J7^T!7V.  
public static String toString(int algorithm){ |8{iIvi/  
return name[algorithm-1]; s:F+bG}|  
} WvzvGT=  
5d{Ggg{s  
public static void sort(int[] data, int algorithm) { pcTXTy 28  
impl[algorithm-1].sort(data); k#NMD4(%O  
} cD@lor j  
pdqa)>$  
public static interface Sort { aMg f6veM  
public void sort(int[] data); IMrOPwjc  
} [y;ZbfMP|o  
(MiOrzT  
public static void swap(int[] data, int i, int j) { }(}vlL  
int temp = data; s\FNKWQ  
data = data[j]; T\CQ  
data[j] = temp; @Hdg-f>y]  
} 8vo7~6yy  
} |RXC;zt9s  
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