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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。 GK:*|jV  
插入排序: xJ,V !N  
{<&x9<f9  
package org.rut.util.algorithm.support; cD7q;|+  
$lUZm\R|k  
import org.rut.util.algorithm.SortUtil; ^M8\ 3G  
/** Jzh_`jW0l  
* @author treeroot 89~)nV)  
* @since 2006-2-2 KWM.b"WnXr  
* @version 1.0 nJrV  
*/ bD=_44I  
public class InsertSort implements SortUtil.Sort{ AM\`v'I*6  
1Hzj-u&N/  
/* (non-Javadoc) <` HLG2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W)o-aX!P  
*/ OfIml.  
public void sort(int[] data) { %$S.4#G2  
int temp; !k Hpw2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6D) vY  
} 9].!mpR  
} p-M QI }  
} <^OGJ}G  
n&k1'KL&  
}  gryC#  
mR?OSeeB  
冒泡排序: R$wo{{KX  
3]/w3|y  
package org.rut.util.algorithm.support; t hTY('m  
izOtt^#DZt  
import org.rut.util.algorithm.SortUtil; t4 $cMf  
gy,B+~p  
/** qJUu9[3'm  
* @author treeroot (7&[!PS  
* @since 2006-2-2 'lg6<M%#[  
* @version 1.0 9tqX77UK  
*/ {'EQ%H $q  
public class BubbleSort implements SortUtil.Sort{ a'W-&j  
-g_PJ.Hk  
/* (non-Javadoc) C {gYrz)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lw1~$rZg  
*/ 3/P2&m  
public void sort(int[] data) { B!yAam#^  
int temp; NkA|T1w7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O~Pb u[C  
if(data[j] SortUtil.swap(data,j,j-1); ?tg(X[h{S  
} 7l%O:M(\  
} yLG`tU1  
} :p5V5iG  
} PG+ICg  
l '<gkwX  
} @'jC>BS8`  
!Zlvz%X  
选择排序: ;y Wfb|!  
){ArZjG>  
package org.rut.util.algorithm.support; Q3'\Vj,S&  
FlgK:=Fmj  
import org.rut.util.algorithm.SortUtil;  UcKpid  
fMP$o3;  
/** ="JLUq*]s  
* @author treeroot K9 :I8E<  
* @since 2006-2-2 hZU @35~BN  
* @version 1.0 2:Zb'Mj  
*/ H<Ed"-n$I<  
public class SelectionSort implements SortUtil.Sort { k[&+Iy  
]|@RWzA  
/* Xq` '^)  
* (non-Javadoc) mtvfG  
* uR"(0_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "O!J6  
*/ H3nx8R$j](  
public void sort(int[] data) { VMe~aUd  
int temp; ;n?H/(6X8>  
for (int i = 0; i < data.length; i++) { |Rf4^vN  
int lowIndex = i; &J,MJ{w6"  
for (int j = data.length - 1; j > i; j--) { 2 <y!3OeN  
if (data[j] < data[lowIndex]) { ]KBzuz%  
lowIndex = j; ]Wa.k  
} dX^OV$  
}  :RBp  
SortUtil.swap(data,i,lowIndex); y_;LTCj?  
} _ )b:F=4j  
} 4en[!*  
]_G!(`Udh  
} z GhJ  
rd vq(\A  
Shell排序: lb{<}1YR0o  
M[g9D  
package org.rut.util.algorithm.support; |kB1>$  
}uz*6Z(S  
import org.rut.util.algorithm.SortUtil; 0Rz'#O32V  
}lvD 5  
/** G];5'd~C;d  
* @author treeroot 1O"7%Pvw  
* @since 2006-2-2 =$`EB  
* @version 1.0 :<=A1>&8  
*/ U ]Ek 5p  
public class ShellSort implements SortUtil.Sort{ eZ'J,;  
!yI , ~`Z  
/* (non-Javadoc) NifzZEX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z<YOA  
*/ -Jr6aai3+  
public void sort(int[] data) { X"0n*UTF,  
for(int i=data.length/2;i>2;i/=2){ Lnc _)RF  
for(int j=0;j insertSort(data,j,i); F@~zVu3'  
} p~vq1D6  
} 5xtIez]x?  
insertSort(data,0,1); zZ@]Kq;.s  
} 2y s'q !  
aY&He~  
/** @8a1a3_F  
* @param data |1iCt1~U  
* @param j v!{mpF  
* @param i ?fr -5&,  
*/ bKRz=$P?  
private void insertSort(int[] data, int start, int inc) { 65X$k]x  
int temp; jODx&dVr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J$JXY@mBSC  
} }D02*s  
} ]k &Y )  
} ,1J+3ugp&  
vN'Y);$  
} ?0QoYA@.$  
wcDHx#~  
快速排序: )`<- c2  
BIovPvq;i  
package org.rut.util.algorithm.support; mF7T=pl  
6EfGJq  
import org.rut.util.algorithm.SortUtil; yU`"]6(@[  
g).k+  
/** Lx6C fR  
* @author treeroot !|}(tqt  
* @since 2006-2-2 A14}  
* @version 1.0 Hyx%FN=  
*/ &.~Xl:lq  
public class QuickSort implements SortUtil.Sort{ s4h3mypw  
"N\>v#>C  
/* (non-Javadoc) }A)>sQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =iF}41a  
*/ [+dOgyK  
public void sort(int[] data) { v,qK= ]ty  
quickSort(data,0,data.length-1); DY<Br;  
} K.'II9-{  
private void quickSort(int[] data,int i,int j){ OT/*|Pn9  
int pivotIndex=(i+j)/2; 8JvF4'zx  
file://swap H~y 7o_tg  
SortUtil.swap(data,pivotIndex,j); s"G;rcS}#  
l;_zXN   
int k=partition(data,i-1,j,data[j]); ^wDZg`  
SortUtil.swap(data,k,j); $w!;~s  
if((k-i)>1) quickSort(data,i,k-1); :wtr{,9rZ  
if((j-k)>1) quickSort(data,k+1,j); N&ZIsaK,j  
iF:`rIC  
} BCN<l +u  
/** QJ1_LJ4)a  
* @param data u xif-5  
* @param i ,QW>M$g{  
* @param j g!%C_AI   
* @return 2' fg  
*/ rWk4)+Tk  
private int partition(int[] data, int l, int r,int pivot) { @w:6m&KL9  
do{ NgH"jg-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *p )1c_  
SortUtil.swap(data,l,r); p<%76H A  
} <~ E'% 60;  
while(l SortUtil.swap(data,l,r); m E<n=g=  
return l; m<]b]FQ  
} 3e~X`K1Q<  
P){F2&!P  
} eTi r-7  
{p#[.E8  
改进后的快速排序: Okd?=*sBx  
n$>E'oG2 t  
package org.rut.util.algorithm.support; v"x{oD$R  
;533;(d* o  
import org.rut.util.algorithm.SortUtil; j(JUOief  
;yh}$)^9  
/** PP{2{  
* @author treeroot ~xz3- a/  
* @since 2006-2-2 O}VI8OB(&  
* @version 1.0 5G-)>  
*/ F^Q[P4>m\  
public class ImprovedQuickSort implements SortUtil.Sort { \VJ7ahg[\  
f?xc-lX5R  
private static int MAX_STACK_SIZE=4096; 9AJMm1 _  
private static int THRESHOLD=10; L\p@1N?K  
/* (non-Javadoc) uYk4qorA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mG;Gt=4  
*/ B/@9.a.c  
public void sort(int[] data) { z>_jC+  
int[] stack=new int[MAX_STACK_SIZE]; P8#;a  
GUUVE@Z  
int top=-1; :m|%=@]`  
int pivot; 7vBB <\  
int pivotIndex,l,r; \gd.Bl  
_Se~bkw?v  
stack[++top]=0; <cTusC<  
stack[++top]=data.length-1; 'W0?XaEk-  
RJMrSz$  
while(top>0){ ?R2`RvQ  
int j=stack[top--]; ~4p@m>>  
int i=stack[top--]; ba_T:;';0  
Iz;hje4JL  
pivotIndex=(i+j)/2; P<@Yux#  
pivot=data[pivotIndex]; Mk-C&#'  
"+^d.13+]  
SortUtil.swap(data,pivotIndex,j); JvFU7`4@  
i,G )kt'H  
file://partition &W1{o&  
l=i-1; {. r/tV5IH  
r=j; N?j,'gy4  
do{ tmAc=?|Wa  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q#W7.8 Z@  
SortUtil.swap(data,l,r); cB5|% @$I  
} i Rwqt-WZ  
while(l SortUtil.swap(data,l,r); g2 dvs  
SortUtil.swap(data,l,j); U4hsbraz  
 imE5 $;  
if((l-i)>THRESHOLD){ lH_S*FDa  
stack[++top]=i; ,$ICv+7]  
stack[++top]=l-1; <{\UE~  
} ^%|(dMo4  
if((j-l)>THRESHOLD){ cpV:y  
stack[++top]=l+1; n1Ag o3NM  
stack[++top]=j; 7QdU|1]  
} E%L]ifA9!  
,nMc. G3  
} $~,]F  
file://new InsertSort().sort(data); x+h7OvW{  
insertSort(data); H^s@qh)L  
} >j]*=&,7  
/** Q7PqN1jTE  
* @param data %;,D:Tv=&  
*/ |0Kj0u8T  
private void insertSort(int[] data) { Q!DQ!;Br6  
int temp; m4:b?[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F8 4LMk?U  
} :z=/z!5:j  
} h 9V9.'  
} a.F6!?  
/wIev1Z!Y  
} )4[{+OJa  
[MM11K  
归并排序: 3mWd?!+m=  
#mqz*=L3  
package org.rut.util.algorithm.support; NJ-cP m  
uQ9/7"S  
import org.rut.util.algorithm.SortUtil; }-{l(8-  
Mnpb".VU#T  
/** U4*5o~!=S  
* @author treeroot (tGK~!cAv  
* @since 2006-2-2 cTRQI3Oa>  
* @version 1.0 e=nExY  
*/ m{gK<T  
public class MergeSort implements SortUtil.Sort{ 8a{FxCBw  
i3 k ',8  
/* (non-Javadoc) k07JMS?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bA#E8dlC_  
*/ 1{+Ni{  
public void sort(int[] data) { Tr}@fa  
int[] temp=new int[data.length]; Rk fr4  
mergeSort(data,temp,0,data.length-1); _:om(gL  
} zk]6|i$!I  
(,\`?g  
private void mergeSort(int[] data,int[] temp,int l,int r){ uC G^,BQ  
int mid=(l+r)/2; s#sr1[9}G  
if(l==r) return ; F0Xv84:O  
mergeSort(data,temp,l,mid); 2l+O|R  
mergeSort(data,temp,mid+1,r); >*A\/Da]j  
for(int i=l;i<=r;i++){ La}=Ng  
temp=data; N i^pP@('  
} Yg%V  
int i1=l; 6YT*=\KT  
int i2=mid+1; &G55<tRE  
for(int cur=l;cur<=r;cur++){ & Qghm o  
if(i1==mid+1) ))63?_  
data[cur]=temp[i2++]; %@(6,^3%i  
else if(i2>r) ?7:"D e  
data[cur]=temp[i1++]; hMw}[6m  
else if(temp[i1] data[cur]=temp[i1++]; nZQZ!Vfj  
else $i@5'[jA  
data[cur]=temp[i2++]; ?|^1-5l3  
} ;D]TPBE  
} (JFa  
kYs2AzS{d  
} hmkcW r`  
<2y~7h:  
改进后的归并排序: FQi"OZHq  
rjU $*+  
package org.rut.util.algorithm.support; $y=sT({VVe  
*cTN5 S>  
import org.rut.util.algorithm.SortUtil; n2-R[W^  
=}7wpTc,  
/** @N.W#<IG  
* @author treeroot zE.4e&m%Z?  
* @since 2006-2-2 fx.FHhVu  
* @version 1.0 UeE& 8{=d  
*/ T4Z("  
public class ImprovedMergeSort implements SortUtil.Sort { 7K9+7I&C  
`Pl=%DR  
private static final int THRESHOLD = 10; `Y.RAw5LrE  
J#@ "Yb  
/* "DWw1{ 5/  
* (non-Javadoc) oB3>0Pm*a.  
* 2ok>z$Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ..;LU:F  
*/ (B]Vw+/  
public void sort(int[] data) { L0|Vc9  
int[] temp=new int[data.length]; nC`#Hm.V%  
mergeSort(data,temp,0,data.length-1); Tjure]wQz  
} *Gu Cv3|  
?vf{v  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7Yj\*N  
int i, j, k; $Ry NM2YI  
int mid = (l + r) / 2; /[nt=#+   
if (l == r) lKIHBi  
return; 9 J5Z'd_  
if ((mid - l) >= THRESHOLD) f{ S)wE>;  
mergeSort(data, temp, l, mid); 1t!Mg{&e[x  
else \/K>Iv'$  
insertSort(data, l, mid - l + 1); 40%p lNPj  
if ((r - mid) > THRESHOLD) 9FK:lFGD  
mergeSort(data, temp, mid + 1, r); >1s:F5u"  
else nEOhN  
insertSort(data, mid + 1, r - mid); >tP/"4c  
7-e)V{A`w  
for (i = l; i <= mid; i++) { KU33P>a"[k  
temp = data; .:RoD?px  
} [Z Ea3/  
for (j = 1; j <= r - mid; j++) { Bb:jy!jq_  
temp[r - j + 1] = data[j + mid]; *N'B(j/  
} ?\\ ]u  
int a = temp[l]; h"%6tpV-  
int b = temp[r]; tGmyTBgx  
for (i = l, j = r, k = l; k <= r; k++) { N.eSf  
if (a < b) { 7SAu">lIl  
data[k] = temp[i++]; oL }FD !}  
a = temp; z=)5M*h  
} else { %I Y-0\  
data[k] = temp[j--]; 8Qu].nKe  
b = temp[j]; [zf9UUc~  
} f.+e  
} l`$f@'k  
} {!oO>t  
Y]8l]l 1  
/** {2Gp+&  
* @param data +~FH'DsT  
* @param l _,F wt  
* @param i F>*w)6 4~  
*/ nsgNIE{>gO  
private void insertSort(int[] data, int start, int len) { ?wwY8e?S  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fXL>L   
} l@#X]3h!  
} NJl|/(]v  
} :^iR&`2~  
} j1d#\  
} A# C  
堆排序: 2~]c`/M3  
e`}|*^-  
package org.rut.util.algorithm.support; v/yk T9@;  
/.WD '*H  
import org.rut.util.algorithm.SortUtil; gn(n</\/O  
3v0)oK  
/** Nt/*VYUn  
* @author treeroot HM[BFF[;/  
* @since 2006-2-2 kFk+TXLDIt  
* @version 1.0 O~aS&g/sf  
*/ &a:>P>\  
public class HeapSort implements SortUtil.Sort{ de ](l687I  
 pd X9G  
/* (non-Javadoc) dwx1 EdJ{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9,,v 0tE  
*/ TvdmgVNP  
public void sort(int[] data) { $h_@`j  
MaxHeap h=new MaxHeap(); n}MG  
h.init(data); ,9+@\  
for(int i=0;i h.remove(); 'w9tZO\2  
System.arraycopy(h.queue,1,data,0,data.length); ',1rW  
} xOu cZ+  
,hOJe=u46  
private static class MaxHeap{ 7?hC t  
?on3z  
void init(int[] data){ b$gDFNa  
this.queue=new int[data.length+1]; S%%>&^5  
for(int i=0;i queue[++size]=data; CB|z{(&N  
fixUp(size); j@9nX4Z  
} l_f"}l  
} H uE*jQ  
>/'WU79TYE  
private int size=0; `C!Pe84(  
s` S<BX7  
private int[] queue; *Li;:b"t  
QCtG #/  
public int get() { T\c dtjk  
return queue[1]; , H[o.r=  
} VJ1 `&  
bt j\v[D  
public void remove() { 9Xm"kVqd/  
SortUtil.swap(queue,1,size--); |`O7> (h  
fixDown(1); F` ?pZ  
} Za01z^  
file://fixdown N$=<6eQm  
private void fixDown(int k) { fYCAwS{  
int j; +p43d:[  
while ((j = k << 1) <= size) { Vx#xq#wK  
if (j < size %26amp;%26amp; queue[j] j++; H-UMsT=g]  
if (queue[k]>queue[j]) file://不用交换 (iS94}-)  
break; z-,U(0 .  
SortUtil.swap(queue,j,k);  %gf8'Q  
k = j; D@j `'&G  
} 2+?M(=4  
} X$st{@}ZB  
private void fixUp(int k) { zR`]8E]  
while (k > 1) { x3M`l|  
int j = k >> 1; i.byHz?/  
if (queue[j]>queue[k]) ^AEg?[q  
break; ZMx<:0ai  
SortUtil.swap(queue,j,k); 6SidH_&C  
k = j; p$"*U[%l  
} ="I]D I  
} Pp.X Du  
K, 35*  
} EIf~>AI  
("9)=x*5  
} o\2#}eie  
Ajq<=y`NzV  
SortUtil: b1s1;8Q  
6w@l#p  
package org.rut.util.algorithm; 9h9Y:i*Gh5  
#~ >0Dr  
import org.rut.util.algorithm.support.BubbleSort; ?.~@lE  
import org.rut.util.algorithm.support.HeapSort; Kk/qd)nk  
import org.rut.util.algorithm.support.ImprovedMergeSort; fCF93,?$  
import org.rut.util.algorithm.support.ImprovedQuickSort; b8`O7@ar  
import org.rut.util.algorithm.support.InsertSort; %F{@DN`  
import org.rut.util.algorithm.support.MergeSort; f:BW{Cij;y  
import org.rut.util.algorithm.support.QuickSort; \GPWC}V\s  
import org.rut.util.algorithm.support.SelectionSort; l[h??C`  
import org.rut.util.algorithm.support.ShellSort; n7Re@'N<  
&Wn!W  
/** @h$7C<  
* @author treeroot US Q{o  
* @since 2006-2-2 k-w._E <  
* @version 1.0 fM8 :Nt$  
*/ q|Ga   
public class SortUtil { >B3_P4pW9  
public final static int INSERT = 1; `[`eg<xj  
public final static int BUBBLE = 2; b9"Q.*c<Z^  
public final static int SELECTION = 3; ousoG$Pc  
public final static int SHELL = 4; EW YpYMkm  
public final static int QUICK = 5; YgVZq\AV"  
public final static int IMPROVED_QUICK = 6; Y%Saz+  
public final static int MERGE = 7; Lo !kv*  
public final static int IMPROVED_MERGE = 8; b ~F8 5U2  
public final static int HEAP = 9; DuCq16'0T  
:MJTmpq,  
public static void sort(int[] data) { * DU86JL`  
sort(data, IMPROVED_QUICK); O*c +TiTb  
} G `TO[p]q  
private static String[] name={ L]9*^al  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9v/1>rziE  
}; ON !1lS  
eP;lH~!.0  
private static Sort[] impl=new Sort[]{ [dUW3}APV  
new InsertSort(),  H'2pmwk  
new BubbleSort(), $e0sa=/  
new SelectionSort(), AC 3 ;i  
new ShellSort(), =G*<WcR  
new QuickSort(), /J5wwQ (:  
new ImprovedQuickSort(), LnM+,cBz  
new MergeSort(), E*k=8$Y  
new ImprovedMergeSort(), G0<m3 Up  
new HeapSort() CbwQ'c$}  
}; C~kw{g+|  
!v$hqNt7  
public static String toString(int algorithm){ rw58bkh6  
return name[algorithm-1]; QCMt4`% 'u  
} Q?Q!D+~mND  
^gD&NbP8  
public static void sort(int[] data, int algorithm) { wl}Q|4rZ  
impl[algorithm-1].sort(data); esFBWJ  
} ?|{P]i?)'  
6J-tcL*4"%  
public static interface Sort { .p <!2   
public void sort(int[] data); 3rOv j&2  
} f`vB$r>  
])vM# f  
public static void swap(int[] data, int i, int j) { z,$^|'pP  
int temp = data; ofRe4 *\j  
data = data[j]; UDGVq S!,E  
data[j] = temp; @#;~_?$?C  
} = q;ACW,z  
} qJrK?:O;  
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