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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。 <mAhr  
插入排序: H9CS*|q6r  
B,{K*-7)MX  
package org.rut.util.algorithm.support; MR}Agu#LG  
+a*tO@HG  
import org.rut.util.algorithm.SortUtil; "Y\_TtY  
/** #UbF9})q  
* @author treeroot 7NJhRz`_  
* @since 2006-2-2 R+CM`4CD  
* @version 1.0 :kGU,>BN  
*/ 4rrSb*  
public class InsertSort implements SortUtil.Sort{ /d%=E  
>KJ+-QuO&  
/* (non-Javadoc) Xn{1 FJX/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` Jdb;  
*/ ~s5SZK*  
public void sort(int[] data) { %HJK;   
int temp; NC38fiH_N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7.`fJf?  
} 73){K?R  
} v;)..X30  
} l]5w$dded~  
,N0#!<}4  
} /i77  
tPF.r  
冒泡排序: l'eyq}&  
6R^^.tCs  
package org.rut.util.algorithm.support; 8-O)Xx}cU  
=AuR:Tx  
import org.rut.util.algorithm.SortUtil; k1!@^A  
cb}[S:&|  
/** uS^Ipxe\  
* @author treeroot ow]053:i  
* @since 2006-2-2 (P$H<FtH  
* @version 1.0 Gy(=706  
*/ 87YyDWTn  
public class BubbleSort implements SortUtil.Sort{ )+6MK(<"  
->V<DZK  
/* (non-Javadoc) y`=]T>X&x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S;- LIv  
*/ ctGL-kp  
public void sort(int[] data) { GN2Sn` ;  
int temp; lg&t8FHa;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &c,kQo+pA  
if(data[j] SortUtil.swap(data,j,j-1); VzVc37 Z>6  
} b1( $R[  
} 7"C$pm6  
} j}C}:\-fY  
} g pOC`=  
){b@}13cF  
} HZ:6zH   
g?ULWeZg5  
选择排序: _D+J!f^  
X93!bB  
package org.rut.util.algorithm.support; r! MWbFw|X  
N}t 2Nu-  
import org.rut.util.algorithm.SortUtil; \7'+h5a  
5bg s*.s  
/** - RU=z!{  
* @author treeroot ruld B,n  
* @since 2006-2-2 KGFv"u{  
* @version 1.0 ;4pYK@9w_  
*/ NN?`"Fww  
public class SelectionSort implements SortUtil.Sort { gp\<p-}  
J G{3EWXR  
/* Kh_Lp$'0uM  
* (non-Javadoc) k1D@fiz  
* 3(,?S$>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RtM8yar+sn  
*/ EU+S^SyZi  
public void sort(int[] data) { h3xAJ!  
int temp; h[@tZ( jrY  
for (int i = 0; i < data.length; i++) { 73\JwOn~  
int lowIndex = i; &eX!#nQ_.  
for (int j = data.length - 1; j > i; j--) { R)m'lMi|  
if (data[j] < data[lowIndex]) { \r+8qC[,  
lowIndex = j; BNs@n"k  
} 7](KV"%V  
} Xx>X5Fy  
SortUtil.swap(data,i,lowIndex); pW J Fz-  
} V: TM]  
} L bmawi^  
XcUwr  
} VG ;kPzze  
7x%R:^*4  
Shell排序: LHo3 Niy.  
&n8_0|gK  
package org.rut.util.algorithm.support; d\gJ$ ~^K  
m3/O.DY%0  
import org.rut.util.algorithm.SortUtil; ~ r4 38&  
M]2]\km  
/** M,\:<kNI  
* @author treeroot x5-}h*  
* @since 2006-2-2 S;286[oq@  
* @version 1.0 =h5H~G5AT  
*/ ]z/8KL  
public class ShellSort implements SortUtil.Sort{ kZGRxp9  
Tq[kl'_  
/* (non-Javadoc) 0i\M,TNf*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fO[+LR 'ax  
*/ 2`N,,  
public void sort(int[] data) { ~yW4)4k;b  
for(int i=data.length/2;i>2;i/=2){ %/zbgS`  
for(int j=0;j insertSort(data,j,i); |#cm`v  
} =V-|#j  
} %UERc{~o*,  
insertSort(data,0,1); e9U9Uu[  
} heC/\@B  
$m-2Hh qZ  
/** {ix?Brq/  
* @param data 9 %I?).5  
* @param j r w2arx  
* @param i GkTiDm?  
*/ CU@Rob}s  
private void insertSort(int[] data, int start, int inc) { [`"ZjkR_J  
int temp; .ufTQ?Fe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (jRm[7H  
} AW!?"xdZ  
} n%.7h3  
} TU,s*D&e  
m!tbkZHQn0  
} m4hg'<<V  
8"8t-E#?  
快速排序: 3 09hn  
Pama#6?OPh  
package org.rut.util.algorithm.support; qGB{7-ru  
iW%I|&  
import org.rut.util.algorithm.SortUtil; -~v2BN/  
R\G0'?h >  
/** bU2Z[sn.  
* @author treeroot YA_c N5p/@  
* @since 2006-2-2 IID-k  
* @version 1.0 zck#tht4 n  
*/ CR"|^{G  
public class QuickSort implements SortUtil.Sort{ 1AM!8VR2  
$!-c-0ub  
/* (non-Javadoc) :*Z4yx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4gz H8sF  
*/ K<SyC54  
public void sort(int[] data) { <66X Xh.  
quickSort(data,0,data.length-1); 7e|s wJ>4  
} 0zlb0[  
private void quickSort(int[] data,int i,int j){ q1"$<# t  
int pivotIndex=(i+j)/2; F@'Jbd`   
file://swap BW}U%B^.  
SortUtil.swap(data,pivotIndex,j); W14 J],{L  
!Sh&3uy_qN  
int k=partition(data,i-1,j,data[j]); >,$_| C  
SortUtil.swap(data,k,j); i1NY9br  
if((k-i)>1) quickSort(data,i,k-1); D%OQ e#!  
if((j-k)>1) quickSort(data,k+1,j); |y!=J$ $_H  
/v1Q4mq  
} CY s,`  
/** =hC,@R>;  
* @param data 93("oBd[s(  
* @param i 1{ ~#H<K  
* @param j p.v0D:@&  
* @return QkEvw<  
*/ 8 D3OOab  
private int partition(int[] data, int l, int r,int pivot) { mS$j?>m  
do{ K/j3a[.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A@1W}8qY:  
SortUtil.swap(data,l,r); bLij7K 2H  
} Z<1FSk,[  
while(l SortUtil.swap(data,l,r); "U>JM@0DNm  
return l; 4:$4u@   
} -Ta9 pxZk  
8dZSi  
} Ce9|=Jx!  
hV8[@&Sx3  
改进后的快速排序: P;=n9hgHI  
f332J  
package org.rut.util.algorithm.support; MDhRR*CBh  
|:q=T ~x  
import org.rut.util.algorithm.SortUtil; 8<S~Z:JK  
lYVz 3p  
/** dx5#\"KX=,  
* @author treeroot )t0$qd ]  
* @since 2006-2-2 Vd,jlt.t  
* @version 1.0 ([\  
*/ J%v=yBC2  
public class ImprovedQuickSort implements SortUtil.Sort { +%T\`6  
 Ch&a/S}  
private static int MAX_STACK_SIZE=4096; U\4g#!qj  
private static int THRESHOLD=10; `#F{Waww'  
/* (non-Javadoc) g]<4&)~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&OKBUG  
*/ [842&5Pd?  
public void sort(int[] data) { h)ECf?r<  
int[] stack=new int[MAX_STACK_SIZE]; QR c{vUR&  
w28o}$b`  
int top=-1; ?26I,:;  
int pivot; A!s`[2 Z  
int pivotIndex,l,r; jSh5!6O  
2,$8icM  
stack[++top]=0; Cc+t}"^  
stack[++top]=data.length-1; "bFTk/  
&gVN&  
while(top>0){ r?+%?$  
int j=stack[top--]; H*RC@O_hv  
int i=stack[top--]; >Ea8G,  
~ -4{B  
pivotIndex=(i+j)/2; :~b3^xhc^  
pivot=data[pivotIndex]; p `8 s  
0bceI  
SortUtil.swap(data,pivotIndex,j); gn8R[5:!V  
8'r2D+Vwm  
file://partition T6O::o6  
l=i-1; |%F=po>w  
r=j; ~P*6ozSYpY  
do{ b3&zjjQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9_L[w\P|4  
SortUtil.swap(data,l,r); l4 D+Y  
} ?{P"O!I{  
while(l SortUtil.swap(data,l,r); @TLS<~  
SortUtil.swap(data,l,j); QwNly4  
I WTwz!+  
if((l-i)>THRESHOLD){ lGV0 *Cji  
stack[++top]=i; /f:dv?!km  
stack[++top]=l-1; =)M/@T  
} A>vBQN  
if((j-l)>THRESHOLD){ UldXYtGe  
stack[++top]=l+1; 2 Wt> Mi  
stack[++top]=j; O,+1<.;+  
} $? m9")  
rXmn7;B}g  
} 9oyE$S h]  
file://new InsertSort().sort(data); 04LI]'  
insertSort(data); NO7J!k?  
} +6sy-<ZL:  
/** Ed0QQyC@9  
* @param data Eza`Z` ^el  
*/ Sz%t JD..  
private void insertSort(int[] data) { **w!CaqvY  
int temp; s`M9    
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aXQnZ+2e^R  
} d?s<2RkPT  
} *?5*m+  
} ;X8yFq  
EY^1Y3D w0  
} bx#>BK!  
F|d\k Q  
归并排序: o1-m1<ft  
3B1XZm  
package org.rut.util.algorithm.support; #ZJ _T`l  
=}lh_  
import org.rut.util.algorithm.SortUtil; 3AHlSX  
5m*iE*+  
/** WQ~;;.v#  
* @author treeroot j| v%)A  
* @since 2006-2-2 v0 nj M  
* @version 1.0 Upc+Ukw  
*/ fL_4uC i\  
public class MergeSort implements SortUtil.Sort{ wg7V-+@i  
w,.+IV$Kk  
/* (non-Javadoc) "W=AB&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NaPt"G  
*/ ;9[fonk  
public void sort(int[] data) { m4TE5q%3  
int[] temp=new int[data.length]; R}G4rO-J  
mergeSort(data,temp,0,data.length-1); ebm])~ZL  
} ) brVduB  
q4R5<LW"  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y#!UPhg<  
int mid=(l+r)/2; 4E; VM{  
if(l==r) return ; I!^;8Pg  
mergeSort(data,temp,l,mid); h hG4-HD  
mergeSort(data,temp,mid+1,r); zO~8?jDN4|  
for(int i=l;i<=r;i++){ cGtO +DE  
temp=data; ta35 K"  
} DwaBdN[!7  
int i1=l; OglEt["  
int i2=mid+1; %j:]^vqFA  
for(int cur=l;cur<=r;cur++){ aO]ZZleNS  
if(i1==mid+1) ge,H-8'Z  
data[cur]=temp[i2++]; kY&k-K\  
else if(i2>r)  tR}MrM  
data[cur]=temp[i1++]; I~q#eO)  
else if(temp[i1] data[cur]=temp[i1++]; r;/4F/6"  
else c2h{6;bfY  
data[cur]=temp[i2++]; &qMPq->  
} w:%o?pKet1  
} hXfQ)$J  
H(R1o~  
} V[{6e  
CpA|4'#  
改进后的归并排序: 9)y/:sO<P  
_76PIR{an  
package org.rut.util.algorithm.support; Ozw;(fDaU  
t`WB;o!  
import org.rut.util.algorithm.SortUtil; NhfJ30~  
||T2~Q*:y  
/** 8 BY j  
* @author treeroot W 0(_ ~  
* @since 2006-2-2 O*eby*%h  
* @version 1.0 ~"!] 3C,L  
*/ AuUd e$l_  
public class ImprovedMergeSort implements SortUtil.Sort { Y,GU%[+  
ks3`3q 7  
private static final int THRESHOLD = 10; TMAJb+@l:  
" W!M[qBW  
/* XxT#X3D/,"  
* (non-Javadoc) qd9cI&  
* $$D}I*^Dt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +awW3^1Ed  
*/ Da&vb D-Bg  
public void sort(int[] data) { R? ,an2  
int[] temp=new int[data.length]; n1qQ+(xC  
mergeSort(data,temp,0,data.length-1); 1q~+E\x  
} 0]>u )%  
l\BVS)  
private void mergeSort(int[] data, int[] temp, int l, int r) { x9$` W  
int i, j, k; _.>QEh5"5  
int mid = (l + r) / 2; 2{]`W57_=  
if (l == r) #,S0HDDHn  
return; P::TO-C  
if ((mid - l) >= THRESHOLD) 9iXeBC  
mergeSort(data, temp, l, mid); G3{Q"^S"  
else rFIqC:=  
insertSort(data, l, mid - l + 1); {n(b{ ibl  
if ((r - mid) > THRESHOLD) ;6gDV`Twy  
mergeSort(data, temp, mid + 1, r); j Yx38_5e  
else -#0qV:D  
insertSort(data, mid + 1, r - mid); tna .52*/  
@xQgY*f#  
for (i = l; i <= mid; i++) { *n; !G8\  
temp = data; AcS|c:3MUy  
} p%iGc<vHX  
for (j = 1; j <= r - mid; j++) { 3Dg,GaRk  
temp[r - j + 1] = data[j + mid]; WzAb|&?  
} JCz@s~f\y  
int a = temp[l]; F ;{n"3<  
int b = temp[r]; .EpV;xq}  
for (i = l, j = r, k = l; k <= r; k++) { P#pn*L*"T  
if (a < b) { E>&n.%  
data[k] = temp[i++]; %dJX-sm@  
a = temp; 7x#Ckep:I  
} else {  gG uZ8:f  
data[k] = temp[j--]; <!L>Exh&r  
b = temp[j]; ML:Q5 ^`  
} ^=C{.{n  
} ?bPRxR  
} "XB[|#&  
]NjX?XdX<  
/** O>SLOWgha  
* @param data x6(~;J  
* @param l t]>Lh>G  
* @param i &Q+Ln,(&L  
*/ e@c0WlWa  
private void insertSort(int[] data, int start, int len) { \x)n>{3C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :Mb%A  
} M>DaQ`b  
} kz{/(t  
} 6726ac{xz  
} cS>e?  
^9^WuSq  
堆排序: &@%W29:  
ipQLK{]t  
package org.rut.util.algorithm.support; I3 .x9  
KQacoUHrK?  
import org.rut.util.algorithm.SortUtil; e:DkGy`-s  
&L#UGp $,  
/** z."a.>fPaO  
* @author treeroot 9U{a{~b  
* @since 2006-2-2 ki[UV zd  
* @version 1.0 Fkvl%n  
*/ g$HwxA9Gp/  
public class HeapSort implements SortUtil.Sort{ .}'qUPNR  
&F\?  
/* (non-Javadoc) Em?d*z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JXCCTUO  
*/ }tsYJlh5  
public void sort(int[] data) { "u6`m?  
MaxHeap h=new MaxHeap(); y|CP;:f;  
h.init(data); 7.C;NT  
for(int i=0;i h.remove(); *4_jA](  
System.arraycopy(h.queue,1,data,0,data.length); !xP8# |1  
} 5Ycco,x  
*&?c(JU;<  
private static class MaxHeap{ HU%o6cw  
m0LTx\w!  
void init(int[] data){ 8d?g]DEN)6  
this.queue=new int[data.length+1]; "5;;)\o ~  
for(int i=0;i queue[++size]=data; gT$Ju88  
fixUp(size); <.pU,T/  
} eAX )^q  
} [P Q?#:r  
7s"< 'cx_F  
private int size=0; VS9`{  
3BB%Z 6F  
private int[] queue; D!.[q-<  
()K " c#  
public int get() { dlJbI}-v=  
return queue[1]; )_mr! z(S  
} @Gx.q&H  
1c<=A!"{  
public void remove() { b`)){LR  
SortUtil.swap(queue,1,size--);  $rz=6h  
fixDown(1); ':gUOra|I  
} fQ/ 0R  
file://fixdown hQ]H /+\  
private void fixDown(int k) { JAAI_gSR3  
int j; 1"/He ` 4  
while ((j = k << 1) <= size) {  yyv8gH  
if (j < size %26amp;%26amp; queue[j] j++; I *x[:)X8  
if (queue[k]>queue[j]) file://不用交换 Jj,U RD&0R  
break; G"X8}:}  
SortUtil.swap(queue,j,k); R<sJ^nx  
k = j; t'BLVCu  
} (7XCA,KTGI  
} W5?yy>S6N  
private void fixUp(int k) { D|rFu  
while (k > 1) { dY@WI[yog  
int j = k >> 1; a["2VY6Eq@  
if (queue[j]>queue[k]) &krwf ]|  
break; 0@G")L Ue0  
SortUtil.swap(queue,j,k); b7!Qn}  
k = j; r`AuvwHPs[  
} RE =`  
} 2kdC]|H2?  
nA P.^_K  
} L,mQ   
PH?#)l D  
} Sp7ld7c  
+<xQM h8  
SortUtil: }Z{=|rVE  
Ggl~nxz  
package org.rut.util.algorithm; ,Y|^^?'j Q  
bx]N>k J  
import org.rut.util.algorithm.support.BubbleSort; IX*idcxR  
import org.rut.util.algorithm.support.HeapSort; X>NhZ5\  
import org.rut.util.algorithm.support.ImprovedMergeSort; A-,up{g  
import org.rut.util.algorithm.support.ImprovedQuickSort; ##@$|6  
import org.rut.util.algorithm.support.InsertSort; ?CC"Yij  
import org.rut.util.algorithm.support.MergeSort; )Psb>'X  
import org.rut.util.algorithm.support.QuickSort; %^I88,$&L  
import org.rut.util.algorithm.support.SelectionSort; ]l'Y'z,}  
import org.rut.util.algorithm.support.ShellSort; cgl*t+o&  
9AxCiT.  
/** w=^`w:5X  
* @author treeroot w QNxL5B  
* @since 2006-2-2 Bn61AFy`  
* @version 1.0 ,hq)1u  
*/ ua5OGx  
public class SortUtil { Kv.>Vf.T}_  
public final static int INSERT = 1; .so[I  
public final static int BUBBLE = 2; jy giG&H  
public final static int SELECTION = 3; =+-Yxh|*  
public final static int SHELL = 4; jeGj<m  
public final static int QUICK = 5; ]wKzE4Z/  
public final static int IMPROVED_QUICK = 6; GP&vLt51  
public final static int MERGE = 7; NZ/yBOD(  
public final static int IMPROVED_MERGE = 8; J9\a{c;.  
public final static int HEAP = 9; 9cEv&3  
F>]m3(  
public static void sort(int[] data) { Mk=mT3=#  
sort(data, IMPROVED_QUICK); %g1,N k  
} ^ <Pq,u%k  
private static String[] name={ YnxRg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]8icBneA~'  
}; |N}P(GF  
H^.IY_I`U*  
private static Sort[] impl=new Sort[]{ 6oLwfTy  
new InsertSort(), (9<guv  
new BubbleSort(), Q$:![}[(  
new SelectionSort(), ow0!%|fO  
new ShellSort(), rS4@1`/R  
new QuickSort(), vG;zJ#c  
new ImprovedQuickSort(), AC;V m: @{  
new MergeSort(), u0#}9UKQ  
new ImprovedMergeSort(), >. '<J]  
new HeapSort() \MjJ9u `8  
}; NPd%M  
=JKv:</.G  
public static String toString(int algorithm){ mt5KbA>nU  
return name[algorithm-1]; /9zE^YcT  
} V5GW:QT  
x.3J[=z=>  
public static void sort(int[] data, int algorithm) { lu#LCG-.  
impl[algorithm-1].sort(data); zN{K5<7o  
} \0mb 3Q'  
~(pmLZ<GW}  
public static interface Sort { lY{FSGp  
public void sort(int[] data); (tCUlX2  
} vfl5Mx4  
H"C[&r  
public static void swap(int[] data, int i, int j) { :$_6SQ<?  
int temp = data; >m# e:[N  
data = data[j]; }';D]c  
data[j] = temp; m=:4`_0Q  
} e|&6$A>4]  
} /}Lt,9  
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