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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。 L`i#yXR  
插入排序:  c|N!ZYJI  
N*PF&MyB  
package org.rut.util.algorithm.support; 67I6]3[ Z  
ASuxty  
import org.rut.util.algorithm.SortUtil; I#Q Tmg.  
/** o:\RJig<  
* @author treeroot /H)K_H#|;  
* @since 2006-2-2 o W)M&$oS  
* @version 1.0 n'/w(o$&  
*/ :x*8*@kC  
public class InsertSort implements SortUtil.Sort{ Co2* -[R  
Yx_[vLm  
/* (non-Javadoc) E"Z9 NDgl#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wHW";3w2~  
*/ Lw=.LN  
public void sort(int[] data) { r9Ux=W\  
int temp; 2Yx6.e<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `_]Z#X&&h  
} b$sw`Rsw  
} \/jr0):  
} k_9tz}Z  
p[(VhbN  
} Ejdw"P"  
]fXMp*LvY  
冒泡排序: rK*s/mX <  
%Fc, $ =  
package org.rut.util.algorithm.support; e`Xy!@`_  
TEZ^Ia  
import org.rut.util.algorithm.SortUtil; Sf}>~z2  
PXGS5,  
/** ]McLace&  
* @author treeroot ]1 #&J(  
* @since 2006-2-2 V1KWi ^  
* @version 1.0 NF1e>O:a<  
*/ =2#a@D6Bl  
public class BubbleSort implements SortUtil.Sort{ i0uBb%GMT  
}DTpl?l  
/* (non-Javadoc) 0(s0<9s%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d\`A ^  
*/ t"`LJE._P  
public void sort(int[] data) { &nk6_{6 c  
int temp; 6Q,-ZM=Z_p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ND\&#  
if(data[j] SortUtil.swap(data,j,j-1); 8<$6ufvOv  
} j380=? 7  
} Q p7|p  
} {& G7 Xa  
} w,NK]<dU@  
/"?y @;Y~  
} T0WB  
|U?5% L  
选择排序: B]< 6\Z?=  
nnmn@t(%r  
package org.rut.util.algorithm.support; w:Fi 2aJ  
 C~vU  
import org.rut.util.algorithm.SortUtil; p ez^]I  
3Ak,M-Jp  
/** ~V?O%1)k?\  
* @author treeroot A)En25,X  
* @since 2006-2-2 > _U)=q  
* @version 1.0 GzK{. xf  
*/ 4-[L^1%S[  
public class SelectionSort implements SortUtil.Sort { 8WU UE=p  
@EzSosmF  
/* )t{oyBT  
* (non-Javadoc) (LPMEQhI:  
* P}o:WI4.cB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \)VV6'zih  
*/ Q7$ILW-S  
public void sort(int[] data) { N<+ ><>9  
int temp; 1TfK"\  
for (int i = 0; i < data.length; i++) { gZgb-$b  
int lowIndex = i; a +Q9kh  
for (int j = data.length - 1; j > i; j--) { 0U]wEz*b  
if (data[j] < data[lowIndex]) { ks7g*; 3{@  
lowIndex = j; 38! $9)  
} k,M%/AXd  
} @`aR*B  
SortUtil.swap(data,i,lowIndex); cu|gM[  
} $rDeI-)S  
} D%umL/[]  
rX6"w31  
} m;{_%oQ;  
K1Nhz'^=D  
Shell排序: .]%PnJM9K  
w4pU^&O  
package org.rut.util.algorithm.support; I!.o& dk  
Rd;k>e  
import org.rut.util.algorithm.SortUtil; 7]Y Le+Ds  
<3z]d?u  
/** AJSe +1  
* @author treeroot $78fR8|r-  
* @since 2006-2-2 PJN TIa  
* @version 1.0 au2 ieZZ[  
*/ z %` \p  
public class ShellSort implements SortUtil.Sort{ T%K(opISc(  
tfj6#{M5  
/* (non-Javadoc) i$)bZr\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =,KRZqz  
*/  L5""  
public void sort(int[] data) { Kxz<f>`b/  
for(int i=data.length/2;i>2;i/=2){ }% JLwN  
for(int j=0;j insertSort(data,j,i); +T=Z!2L  
} q2 D2:0^2  
} ,"  
insertSort(data,0,1); jdQ`Y+BC  
} Ol:&cX3G  
LF <fp&C)h  
/** 5+b[-Daz  
* @param data Ae:(_UJz  
* @param j oC>e'_6_b  
* @param i y5iLFR3z  
*/ }kI-UEn$EP  
private void insertSort(int[] data, int start, int inc) { on $?c  
int temp; /HgdTyR)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Oi&.pY:X-  
} !7@IWz(, "  
} :Ts"f*  
} %d*k3 f }  
31 4PcSc  
}  ^ruS  
QIF|pZ+^  
快速排序: ;! &A  
5Fm.] /  
package org.rut.util.algorithm.support; jNB|98NN  
 db^S@}  
import org.rut.util.algorithm.SortUtil; DCM ,|FE  
@Z~lM5n$8  
/** vL@N21u  
* @author treeroot ?1i>b->  
* @since 2006-2-2 !Sfy'v.  
* @version 1.0 R!;tF|]  
*/ K>6#MI  
public class QuickSort implements SortUtil.Sort{ :}TT1@  
ej>8$^y  
/* (non-Javadoc) AU}e^1h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \v{tK;  
*/ KOGbC`TN<  
public void sort(int[] data) { /J`8Gk59  
quickSort(data,0,data.length-1); 5#s?rA%u  
} f:\jPkf'  
private void quickSort(int[] data,int i,int j){ Rv ?G o2  
int pivotIndex=(i+j)/2; Ji4c8*&Jpc  
file://swap g !w7Yv  
SortUtil.swap(data,pivotIndex,j); LEvdPG$)  
h<\o[n7j  
int k=partition(data,i-1,j,data[j]); A:ls'MkZ4  
SortUtil.swap(data,k,j); ?JDZDPVJ)  
if((k-i)>1) quickSort(data,i,k-1); !YSAQi;I  
if((j-k)>1) quickSort(data,k+1,j); NqvL,~1G  
~PP*k QZlJ  
} zg2A$Fd[j  
/** Oyhl*`-*t  
* @param data [>::@[  
* @param i E{sTxO I$  
* @param j |;ycEB1  
* @return _H>ABo  
*/ L B1 ui  
private int partition(int[] data, int l, int r,int pivot) { p>h B&h  
do{ :X Er{X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0*YLFqN  
SortUtil.swap(data,l,r); :q S=_!1  
} bVSa}&*kM  
while(l SortUtil.swap(data,l,r); x0@J~ _0  
return l; (p26TN;*$5  
} %h 6?/  
OsPx-|f S~  
} zI8Q "b  
e5maZ(.;F  
改进后的快速排序: n c:^)G  
&N GYV  
package org.rut.util.algorithm.support; sh[Yu  
\Xc6K!HJM  
import org.rut.util.algorithm.SortUtil; FYR%>Em  
~{iBm"4  
/** P}N%**>`  
* @author treeroot }legh:/*?O  
* @since 2006-2-2 > n Y<J  
* @version 1.0 9"1 0:\U  
*/ _ $PZID  
public class ImprovedQuickSort implements SortUtil.Sort { ,n TC7V  
3&_O\nD  
private static int MAX_STACK_SIZE=4096; db`xlvrCY  
private static int THRESHOLD=10; BRYhL|d~.  
/* (non-Javadoc) 5_ -YF~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {\j h? P|  
*/ -q|K\>tgU  
public void sort(int[] data) { Fx 2 KRxk  
int[] stack=new int[MAX_STACK_SIZE]; BusD}9QqB  
=HmV0  
int top=-1; :,%~rR  
int pivot; 7kx)/Rw\B  
int pivotIndex,l,r; cOcF VPQ  
HGfV2FtTz  
stack[++top]=0; 0RAmwfXm  
stack[++top]=data.length-1; ]]`hnzJX  
]?S\So+  
while(top>0){ &H$ 3`"p5u  
int j=stack[top--]; c-3AzB#[  
int i=stack[top--]; KRQKL`}}  
m619bzFlB  
pivotIndex=(i+j)/2; jhrmQS  
pivot=data[pivotIndex]; S-WD?BF C  
=i  }  
SortUtil.swap(data,pivotIndex,j); Ac'[(  
f305yo  
file://partition I]bqle0M  
l=i-1; PN[ `p1F  
r=j; 1%Xwk2l,8b  
do{ U:m[* }+<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fs+l  
SortUtil.swap(data,l,r); (xpj?zlmM  
} =`[08  
while(l SortUtil.swap(data,l,r); wx n D3  
SortUtil.swap(data,l,j); ^5j|   
/"+YE&>\  
if((l-i)>THRESHOLD){ e  p~3e5  
stack[++top]=i; ne] |\]  
stack[++top]=l-1; }GJIM|7^  
} h 1G`z  
if((j-l)>THRESHOLD){ $'*@g1v Y  
stack[++top]=l+1; i<&*f}='  
stack[++top]=j; iM+K&\{_h  
} fu'iG7U M  
A9\m .3jo  
} Y,?s-AB  
file://new InsertSort().sort(data); ,S E5W2a]  
insertSort(data); ]\w0u7}  
} z OD5a=[1  
/** X> :@`}bq  
* @param data #XR<}OYcL  
*/ 9YRoWb{y  
private void insertSort(int[] data) { w~+5FSdH  
int temp; T#xCu|5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (M5w:qbR  
} ,IoPK!5xy  
} T{3C3EE?]  
}  hX?L/yf  
!cPiH6eO  
} IXNcn@tN  
< gB>j\:  
归并排序: 4wh_ iO  
Jaz|b`KDj  
package org.rut.util.algorithm.support; Wm$( b2t  
N|K,{ p^li  
import org.rut.util.algorithm.SortUtil; Q1J./C}  
=8O057y  
/** #Ki(9oWd  
* @author treeroot n0g,r/  
* @since 2006-2-2 HMGby2^+  
* @version 1.0 *t J+!1  
*/ __r]@hY   
public class MergeSort implements SortUtil.Sort{ |&B.YLx  
\9;u.&$mNB  
/* (non-Javadoc) YYU Di@K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <jE6ye(R  
*/ Ab`mID:  
public void sort(int[] data) { yPrp:%PS  
int[] temp=new int[data.length]; UOHU 1.3$T  
mergeSort(data,temp,0,data.length-1); rU<NHFGj4  
} O 4@sN=o  
hNs970i  
private void mergeSort(int[] data,int[] temp,int l,int r){ D,%R[F? 5O  
int mid=(l+r)/2; Ug02G  
if(l==r) return ; e\x=4i  
mergeSort(data,temp,l,mid); *5Upb,* *  
mergeSort(data,temp,mid+1,r); x'kwk  
for(int i=l;i<=r;i++){ ',j'Hf  
temp=data; wr{03mQHxp  
} 48dIh\TH"  
int i1=l; Kk+IUs  
int i2=mid+1; ;ZZ%(P=-  
for(int cur=l;cur<=r;cur++){ hV|pH)Nu{  
if(i1==mid+1) Bv_C *vW  
data[cur]=temp[i2++]; Y)^qF)v,d  
else if(i2>r) RNGTSz  
data[cur]=temp[i1++]; XzI c<81Z  
else if(temp[i1] data[cur]=temp[i1++]; rB|Mp!g%@  
else meunAEe  
data[cur]=temp[i2++]; tz0@csXV  
} 'WK}T)o  
} Qb}7lm{r  
S!Ue+jW  
} {|?OKCG{  
~ l"70\&  
改进后的归并排序: BE. v+'c"  
i0DYdUj  
package org.rut.util.algorithm.support; wjh[}rTV*  
p6m]( Jg  
import org.rut.util.algorithm.SortUtil; fD+'{ivN4  
 ^ZnlWZ@r  
/** vw=OGjT_>m  
* @author treeroot {wMw$Fvf  
* @since 2006-2-2 'W>Bz,M6yo  
* @version 1.0 6*,'A|t?y  
*/ (+7gS_c  
public class ImprovedMergeSort implements SortUtil.Sort { |S48xsFvq  
eUlF4l<]  
private static final int THRESHOLD = 10; w"d~R   
"&?F 6Pi  
/* 3Tze`Q 9  
* (non-Javadoc) y~'F9E!i  
* , f9V`Pz)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wy6>^_z  
*/ 3qOq:ZkQ  
public void sort(int[] data) { (7BG~T  
int[] temp=new int[data.length]; qS<a5`EA  
mergeSort(data,temp,0,data.length-1); fP>_P# gZ  
} 0VC8'6S_k  
?8[,0l:|  
private void mergeSort(int[] data, int[] temp, int l, int r) { +7n;Bsk _  
int i, j, k; jqq96hP,  
int mid = (l + r) / 2; 4 zuM?Dp  
if (l == r) YW55iyM  
return; lJ.:5$2H  
if ((mid - l) >= THRESHOLD) 'Lu7cb^  
mergeSort(data, temp, l, mid); <>/0 ;J1<  
else RM\it"g  
insertSort(data, l, mid - l + 1); "j BrPCB 8  
if ((r - mid) > THRESHOLD) 'qcLK>E  
mergeSort(data, temp, mid + 1, r); nEu,1  
else !|6M,Rk_  
insertSort(data, mid + 1, r - mid); yO Ed8  
MGpP'G:v  
for (i = l; i <= mid; i++) { D /ysS$!{  
temp = data; FEj{/  
} 0[ MQp"z  
for (j = 1; j <= r - mid; j++) { ({ 'I;]AQ  
temp[r - j + 1] = data[j + mid]; {3=M-U~r  
} am.}2 QZU  
int a = temp[l]; 19-|.9m(  
int b = temp[r]; (|%YyRaX  
for (i = l, j = r, k = l; k <= r; k++) { = Q|_v}  
if (a < b) { u&Q2/Y  
data[k] = temp[i++]; -w nlJi1f  
a = temp; v`3q0,,  
} else { ufF$7@(+  
data[k] = temp[j--]; $YuVM  
b = temp[j]; DM"nxTVre  
} >zcR ?PPs  
} {n9]ej^  
} SXX6EIJr|  
/V@~Vlww  
/** Ny|2Fcs  
* @param data \| qr&(PG  
* @param l u1K;{>4lx  
* @param i R3+y*< <e  
*/ sLiKcR8^  
private void insertSort(int[] data, int start, int len) { 5dc24GB>_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :SFcnYv0  
} UjLZ!-}  
} RbB y8ZVM  
} Zp'c>ty=  
} ;M{@|z[Nv  
j2O?]M  
堆排序: 9x;CJhX  
!14aw9Q  
package org.rut.util.algorithm.support; nXHU|5.I  
Lc,`  
import org.rut.util.algorithm.SortUtil; f9v%k'T[  
={& }8VA  
/** sOzmw^7   
* @author treeroot *m2{6N_  
* @since 2006-2-2 9pAklD4  
* @version 1.0 r #H(kJu,  
*/ 5J!ncLNm{  
public class HeapSort implements SortUtil.Sort{ 3[8F:I0UL  
|"V]$s$ c  
/* (non-Javadoc) s5{N+O)~S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fw ,'a  
*/ g/H:`J  
public void sort(int[] data) { <vS J< WY  
MaxHeap h=new MaxHeap(); b+/XVEsr  
h.init(data); -I."= c%  
for(int i=0;i h.remove(); N"-</kzV  
System.arraycopy(h.queue,1,data,0,data.length); !GJnYDN  
} y\-f{I  
Hkq""'Mx+w  
private static class MaxHeap{ ap|7./yg  
Qw>ftle  
void init(int[] data){ T=lir%q  
this.queue=new int[data.length+1]; |+Gv)Rvp  
for(int i=0;i queue[++size]=data; >q+o MrU  
fixUp(size); &k'J5YHm8H  
} >y&Db  
} f-6hcd@Ca  
E`vCYhf{  
private int size=0;  d+FS  
,_HSvs7-  
private int[] queue; -h=K]Y{`  
VQSwRL3B=  
public int get() { 9 Yv;Dom  
return queue[1]; uJ:'<dJ  
} OcR6\t'  
r!Ujy .R  
public void remove() { 6ww4ZH?j  
SortUtil.swap(queue,1,size--); k.Tu#7  
fixDown(1);  P%#WeQ+  
} Yphru"\$  
file://fixdown 1rs`|iX5  
private void fixDown(int k) { nNbOq[  
int j; RmXC ^VQ  
while ((j = k << 1) <= size) { "#7~}Z B  
if (j < size %26amp;%26amp; queue[j] j++; E]G#"EV!Y  
if (queue[k]>queue[j]) file://不用交换 ?UD2}D[M  
break; k-5Enbkr  
SortUtil.swap(queue,j,k); 0*?/s\>PS;  
k = j; EW;R^?Z  
} a.P7O!2Lp  
} }T<[JXh=J  
private void fixUp(int k) { )b<-=VR  
while (k > 1) { z [xi  
int j = k >> 1; MQD%m ;[s  
if (queue[j]>queue[k]) i3C5"\y  
break; "Mt4~vy  
SortUtil.swap(queue,j,k); w!$|IC  
k = j; K$>C*?R  
} H.\gLIr  
} C>%2'S^.b  
8r7}6  
} u=a5Z4N'  
(Uo:WyVj|F  
} fiDwa ;,  
g3B zi6$m  
SortUtil: #vk-zx*v7=  
~G0\57;h  
package org.rut.util.algorithm; tvNh@it:F  
CiE  
import org.rut.util.algorithm.support.BubbleSort; h-0sDt pR  
import org.rut.util.algorithm.support.HeapSort; CD$0Z  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9uk}r; %9  
import org.rut.util.algorithm.support.ImprovedQuickSort; FD?!bI4  
import org.rut.util.algorithm.support.InsertSort; jJ^p ?  
import org.rut.util.algorithm.support.MergeSort; VCOz?Y*  
import org.rut.util.algorithm.support.QuickSort; y*ae 5=6(  
import org.rut.util.algorithm.support.SelectionSort; LKtug>Me  
import org.rut.util.algorithm.support.ShellSort; ~jK'n4  
T;6 VI|\  
/** /cn=8%!N  
* @author treeroot z[kz [  
* @since 2006-2-2 sZ`C "1cX  
* @version 1.0 >)g`;iO  
*/ b$/TfpNdo  
public class SortUtil { Cx>iSx  
public final static int INSERT = 1; :f^ =~#!  
public final static int BUBBLE = 2; 9f ,$JjX[  
public final static int SELECTION = 3; 2=H3yEJq  
public final static int SHELL = 4; f.?p"~!  
public final static int QUICK = 5; N?!]^jI,  
public final static int IMPROVED_QUICK = 6; %'2DEt??  
public final static int MERGE = 7; j{)_&|^{  
public final static int IMPROVED_MERGE = 8; #X&`gDW  
public final static int HEAP = 9; y,$kU1yH7  
fmH"&>Loc  
public static void sort(int[] data) { CXqU< a&  
sort(data, IMPROVED_QUICK); <gU^#gsGra  
} X"V,3gDG  
private static String[] name={ ImJ2tz6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P,xI3U< q  
}; T7f>u}T  
9IFK4>&O6  
private static Sort[] impl=new Sort[]{ e1'<;;; L  
new InsertSort(), nSxFz!  
new BubbleSort(), >kK;IF9h  
new SelectionSort(), \!HG kmd  
new ShellSort(),  /[f9Z:>V  
new QuickSort(), L"Y_:l3"7  
new ImprovedQuickSort(), 56i9V9{2  
new MergeSort(), s7RAui  
new ImprovedMergeSort(), H38ODWO3  
new HeapSort() }S{#DgZ@X  
}; RhVQVjc  
8BUPvaP<[  
public static String toString(int algorithm){  m9My  
return name[algorithm-1]; ${"+bWG2G!  
} Y.M^tH:  
zyNg?_SM  
public static void sort(int[] data, int algorithm) { N*.JQvbnr  
impl[algorithm-1].sort(data); zZ3Ko3L%g_  
} V+7x_>!&)  
GC(:}e|  
public static interface Sort { |G.|ocj;  
public void sort(int[] data); BElVkb  
} CB(Qy9C%h[  
YXCfP~i  
public static void swap(int[] data, int i, int j) { Y\!* c=@k  
int temp = data; =,B44:`r  
data = data[j]; gC-3ghmgS  
data[j] = temp; 6onFf* m!x  
} -h&AO\*^W  
} >;Er[Rywr  
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