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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。 ynmWW^dg  
插入排序: #=D) j  
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package org.rut.util.algorithm.support; dah[:rP,n{  
mH54ja2  
import org.rut.util.algorithm.SortUtil; teOe#*  
/** s6ZuM/Q  
* @author treeroot jG6]A"pr  
* @since 2006-2-2 \n"{qfn`r  
* @version 1.0 6h>wt-tRC  
*/ TIx|L  
public class InsertSort implements SortUtil.Sort{ ~< P 0]ju  
\(~y?l  
/* (non-Javadoc) 5uGqX"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]O Z5 fd  
*/ t#yk ->,  
public void sort(int[] data) { O1rvaOlr  
int temp; ~Xw"}S5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -B>++r2A^  
} 5(Cl1Yse=r  
} JHW "-b  
} Zvhsyz|  
JBD7h5|Lc  
} UN7EF/!Zz  
zUDg&-J3  
冒泡排序: !*/*8re  
Nw:GCf-L  
package org.rut.util.algorithm.support; yTyj'-4  
cO-7ke  
import org.rut.util.algorithm.SortUtil; ".f ;+wH  
xpNH?#&  
/** u=Fv 2  
* @author treeroot Om\o#{D  
* @since 2006-2-2 ylUb9KusOx  
* @version 1.0 cy*?&~;  
*/ *EI6dD"  
public class BubbleSort implements SortUtil.Sort{ 5 VRYO"D:  
/xG*,YL/q  
/* (non-Javadoc) s J\BF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HPpR.  
*/ 7t3X)Ah  
public void sort(int[] data) { |VKK#J/  
int temp; #w;v0&p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rI{=WPI&WU  
if(data[j] SortUtil.swap(data,j,j-1); +U:$(UV'A  
} z^KJ*E  
} _my"%@n  
} w;D+y*2  
} *RT>`,t/  
6~OoFm5  
} y@]_+2Vo  
wWgWWXGT}  
选择排序: 9K/HO!z  
X#d~zk[r2  
package org.rut.util.algorithm.support; J2d.f}-  
$v,dz_O*\  
import org.rut.util.algorithm.SortUtil; yH7F''O7  
8][nmjk0  
/** X$%'  
* @author treeroot QU#w%|  
* @since 2006-2-2 d^/3('H6  
* @version 1.0 #1J &7F1  
*/ Yi .u"sh]  
public class SelectionSort implements SortUtil.Sort { {2qFY 5H  
BMhy=+\  
/* /{|EAd{  
* (non-Javadoc) 832v"k CD  
* YTAmgkF\4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R5"K]~  
*/ |b[+I?X  
public void sort(int[] data) { ADZ};:]  
int temp; ~a%Z;Aj  
for (int i = 0; i < data.length; i++) { ~7Y+2FZ  
int lowIndex = i; V=)_yIS  
for (int j = data.length - 1; j > i; j--) { Gb"r|(!  
if (data[j] < data[lowIndex]) { l|xZk4@_uE  
lowIndex = j; /`9sPR6e  
} z+ s6)Ad  
} 0WT{,/>  
SortUtil.swap(data,i,lowIndex); hhb?6]Z/  
} )@N2  
} UYFwS/ RW}  
,_|]Ufr!a  
} U0=]  
U93}-){m  
Shell排序: _\=`6`b)  
Gn&-X]Rrl  
package org.rut.util.algorithm.support; v. %R}Pa  
Xf0M:\w=M  
import org.rut.util.algorithm.SortUtil; Y;nZ=9Sw  
Z 1zVwHa_  
/** :iFIQpk  
* @author treeroot ! N|0x`  
* @since 2006-2-2 ^ K|;~}P  
* @version 1.0 %R1tJ(/  
*/ L}GC<D:  
public class ShellSort implements SortUtil.Sort{ H&F9J ^rC  
A01AlK_B  
/* (non-Javadoc) Ny_lrfh)[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F1iGMf-8  
*/ & +4gSr  
public void sort(int[] data) { ##KBifU"  
for(int i=data.length/2;i>2;i/=2){ VQY&g;[d  
for(int j=0;j insertSort(data,j,i); (Lo%9HZ1Mx  
} b:=TB0Fx?n  
} rI^zB mrr  
insertSort(data,0,1); r~+\ Y"rM  
} |\_^ B  
rX*H)3F  
/** A"`foI$0  
* @param data %cCs?ic  
* @param j =PUt&`1.a  
* @param i 3VuW#m#j  
*/ +${D  
private void insertSort(int[] data, int start, int inc) { V I,ACj  
int temp; 6}75iIKi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ";BlIovT=R  
} *J$=.fF1  
} $=5=NuX  
} ;`l'2 z@N  
{x:ZF_wbb  
} F&])P- !3  
c<uN"/gi*  
快速排序: t^`O{m<  
6``'%S'#  
package org.rut.util.algorithm.support; df*5,NV'-*  
iQ4);du  
import org.rut.util.algorithm.SortUtil; cKN$ =gd  
ex+\nD>t4  
/** GFfq+=se  
* @author treeroot o]Ol8I  
* @since 2006-2-2 "oWwc zzO  
* @version 1.0 MepuIh  
*/ 1mfs 4  
public class QuickSort implements SortUtil.Sort{ {*[\'!d--.  
FW) x:2BG  
/* (non-Javadoc) m.px>v-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _FXZm50\g{  
*/  ]E_h  
public void sort(int[] data) { 76wc,+  
quickSort(data,0,data.length-1); l_EM8pL,f  
} H_EB1"C;\  
private void quickSort(int[] data,int i,int j){  |?Frj  
int pivotIndex=(i+j)/2; 0E?jW7yr  
file://swap YhbZ'SJ  
SortUtil.swap(data,pivotIndex,j); \ W?R  
v.Q(v\KV5  
int k=partition(data,i-1,j,data[j]); vy_D>tp  
SortUtil.swap(data,k,j); '7D,m H  
if((k-i)>1) quickSort(data,i,k-1); 4%2~Wi8  
if((j-k)>1) quickSort(data,k+1,j); :[\v  
baJxU:Y=p  
} d}LRl"_n  
/** w$H^q !(  
* @param data H~GQ;PhRx  
* @param i A 6OGs/:&  
* @param j WX}xmtLs  
* @return uum;q-"  
*/ )'/|)  
private int partition(int[] data, int l, int r,int pivot) { umF Z?a  
do{ \\{J'j>{f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &j?#3Qt'_  
SortUtil.swap(data,l,r); zrR`ecC(b  
} <EPj$::  
while(l SortUtil.swap(data,l,r); F6o_b4l  
return l; @Ys!DScY,  
} !FA# K8  
L f"i !  
} c~{9a_G  
@[#$J0q q  
改进后的快速排序: s <   
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package org.rut.util.algorithm.support; qb5#_1qz+^  
I8+~ &V}  
import org.rut.util.algorithm.SortUtil; [cTe54n  
HS{(v;  
/** *+TH#EL2  
* @author treeroot _<=S_ <$2  
* @since 2006-2-2 "jTKSgv+q5  
* @version 1.0 N2oRJ,:B  
*/ {GKy'/[  
public class ImprovedQuickSort implements SortUtil.Sort { b !%hH  
D\@m6=L  
private static int MAX_STACK_SIZE=4096; h G gx  
private static int THRESHOLD=10; 0dA7pY9  
/* (non-Javadoc) Pt@%4 :&-h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : p{+G  
*/ @g2 cC  
public void sort(int[] data) { hty0Rb[dH  
int[] stack=new int[MAX_STACK_SIZE]; XYS'.6k(  
QCH}-q)  
int top=-1; `(1K  
int pivot; fLSXPvm  
int pivotIndex,l,r; |,#t^'S!  
PqyA1  
stack[++top]=0; ZunCKc  
stack[++top]=data.length-1; VtzI9CD  
vKq^D(&cl  
while(top>0){ 1"pI^Ddt  
int j=stack[top--]; !).}u,*'no  
int i=stack[top--]; (RUT{)p[  
 ] GHt"  
pivotIndex=(i+j)/2; [/ !;_b\X  
pivot=data[pivotIndex]; 1G0fp:\w  
7]x3!AlV  
SortUtil.swap(data,pivotIndex,j); %]gn?`O  
Rw6; Z  
file://partition s:2|c]wQ#R  
l=i-1; ~6pr0uyO`  
r=j;  t^xTFn  
do{ z-@=+4~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3I!?e!y3(  
SortUtil.swap(data,l,r); ^K7ic,{  
} %.<H=!$  
while(l SortUtil.swap(data,l,r); aWwPvd3  
SortUtil.swap(data,l,j); v~T7`  
a@@M+9Q  
if((l-i)>THRESHOLD){ p}|.ZkyN  
stack[++top]=i; }w/;){gu  
stack[++top]=l-1; Iq#ZhAk  
} h)6GaJ=  
if((j-l)>THRESHOLD){ *\wp?s>-t  
stack[++top]=l+1; ZxG}ViS4I  
stack[++top]=j; '8 fk+>M  
} SG?Nsp^%`B  
7}GK%H-u  
} LAP6U.m'd  
file://new InsertSort().sort(data); 6ns! ~g@  
insertSort(data); 3#vinz  
} "F3]X)}  
/** ~%/Wupf  
* @param data mCs#.%dU  
*/ :LWn<,4F&  
private void insertSort(int[] data) { RbGJ)K!  
int temp; .MVYB\6Q0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4EXB;[ ]  
} i\4hR?  
} KJ?y@Q  
} +B'8|5tPX  
Z<#hS=eY  
} 4<lQwV6=  
W(25TbQ  
归并排序: 65oWD-  
-w;(cE  
package org.rut.util.algorithm.support; v}sY|p"  
T/c<23i  
import org.rut.util.algorithm.SortUtil; !Oj)B1gc6&  
F$Ca;cP"  
/** c{>uqPTY  
* @author treeroot =?])['VaA  
* @since 2006-2-2 "c(Sysl.L  
* @version 1.0 < AI;6/  
*/ [k[u*5hP|F  
public class MergeSort implements SortUtil.Sort{ X53mzs  
F( Ak  
/* (non-Javadoc) 'JZJFE7Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O1D6^3w  
*/ h 6%[q x<  
public void sort(int[] data) { ?sBh=Ds  
int[] temp=new int[data.length]; B/J>9||g  
mergeSort(data,temp,0,data.length-1); N7%TYs  
} v! 42 DA)  
rVtw-[p  
private void mergeSort(int[] data,int[] temp,int l,int r){ @ct+7v~  
int mid=(l+r)/2; !Y<oN~<%)  
if(l==r) return ; Uw/l>\  
mergeSort(data,temp,l,mid); vBvNu<v7te  
mergeSort(data,temp,mid+1,r); O lfn  
for(int i=l;i<=r;i++){ oyk>vIZ  
temp=data; <e)o1+[w  
} a`E*\O'd  
int i1=l; x|0:P sE  
int i2=mid+1; #5&jt@NS  
for(int cur=l;cur<=r;cur++){ .fzu"XAPu  
if(i1==mid+1) cBYfXI0`  
data[cur]=temp[i2++]; 'r} zY-FM`  
else if(i2>r) 3L _I[T$s  
data[cur]=temp[i1++]; TwvAj#j  
else if(temp[i1] data[cur]=temp[i1++]; a=xT(G0Re  
else Sd))vS^g  
data[cur]=temp[i2++]; w?mEuXc  
} K'1~^)*  
} F_ 7H!F  
"BVdPSDBk  
} _P,^_%}V06  
0IT@V5Gdj  
改进后的归并排序: #hL*r bpT  
B|%tE{F  
package org.rut.util.algorithm.support; DjCx~@  
/%n`V  
import org.rut.util.algorithm.SortUtil; ~~F2Ij  
1%J.WH6eQ  
/** `Zz uo16  
* @author treeroot ;pJ2V2 g8  
* @since 2006-2-2 aF8k/$u  
* @version 1.0 /}5B&TZ=(3  
*/ _2hXa!yO  
public class ImprovedMergeSort implements SortUtil.Sort { k$Rnj`*^  
,WWj-X|+=  
private static final int THRESHOLD = 10; ]lS@}W\  
P2 0|RvE  
/* k_GP> b\"k  
* (non-Javadoc) p|XAlia  
* 8I+d)(:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g):]'  
*/ ?Qqd "=k4  
public void sort(int[] data) { va|rO#.=  
int[] temp=new int[data.length]; 'GJVWpvUU  
mergeSort(data,temp,0,data.length-1); MR'o{?{e`  
} ~2uh'e3  
] c}91  
private void mergeSort(int[] data, int[] temp, int l, int r) { JmOW~W  
int i, j, k; N;HIsOT}t  
int mid = (l + r) / 2; fT Y/4(  
if (l == r) !q4x~G0d  
return; % do1i W  
if ((mid - l) >= THRESHOLD) h4fLl3%H  
mergeSort(data, temp, l, mid); pKJK9@Ad  
else LD(C\  
insertSort(data, l, mid - l + 1); V/"}ku  
if ((r - mid) > THRESHOLD) /&Jv,[2kV  
mergeSort(data, temp, mid + 1, r); 7\/5r.  
else 4p)e}W*  
insertSort(data, mid + 1, r - mid); $E(XjuS  
_qWC4NMF(  
for (i = l; i <= mid; i++) { 9 1P4:6  
temp = data; V*65b(q)  
} AxCI 0  
for (j = 1; j <= r - mid; j++) { PI|`vC|yy&  
temp[r - j + 1] = data[j + mid]; *]s&8/Gmb  
} ';RI7)<  
int a = temp[l]; x:5dC I  
int b = temp[r];  ?RD *1  
for (i = l, j = r, k = l; k <= r; k++) { tSv0" L  
if (a < b) { +=c am/A  
data[k] = temp[i++]; We`'>'W0  
a = temp; IS]{}Y\3H  
} else { gbOCR1PBg  
data[k] = temp[j--]; \gccQig1CJ  
b = temp[j]; mog9jw  
} b>cafu  
} /N^~U&7  
} \&A+s4c")  
w@]jpH;WX  
/** mVm4fHEYwU  
* @param data 'I/h(  
* @param l hSqMaX%G  
* @param i 2HOe__Ns  
*/ M?o{STt  
private void insertSort(int[] data, int start, int len) { 9 Aivf+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "dN < i  
} !Qu PG/=X  
} `?o=*OS7Y  
} H`<?<ak6'M  
} sms1%%~  
R]b! $6Lt  
堆排序: oL *n>dH  
a0d ,  
package org.rut.util.algorithm.support; 17py ).\  
x3p9GAd#  
import org.rut.util.algorithm.SortUtil; q#1X[A()  
aqQ o,5U>  
/** /jrY%C  
* @author treeroot Etmo7 8e  
* @since 2006-2-2 UR>_)*  
* @version 1.0 sp8[cO=  
*/ qw:9zYG}qW  
public class HeapSort implements SortUtil.Sort{ T_L6 t66I  
!p% @Deu  
/* (non-Javadoc) t*+! n.p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  t.3 \/  
*/ 0K3Hf^>m  
public void sort(int[] data) { B 1w0cS%%:  
MaxHeap h=new MaxHeap(); !Q[}s #g  
h.init(data); Oje|bxQ  
for(int i=0;i h.remove(); I]sqi#h$2W  
System.arraycopy(h.queue,1,data,0,data.length); 1*R_"#  
} J%r7<y\  
d)*(KhYie@  
private static class MaxHeap{ _'*DT=H'U  
wr@GN8e`  
void init(int[] data){ u 2lX d'  
this.queue=new int[data.length+1]; +#v4B?NR  
for(int i=0;i queue[++size]=data; |[wyc!nY).  
fixUp(size); w~v<v&  
} <;KRj85"j  
} u[`v&e  
i wz` x  
private int size=0;  M]0^ind  
}=pOiILvD  
private int[] queue; QV)}3pW  
Gm@iV,F%R  
public int get() { T{ nQjYb?  
return queue[1]; wG:$6  
} e 2*F;.)  
LV=^jsQ5  
public void remove() { ;l`X!3  
SortUtil.swap(queue,1,size--); lQr6;D}+  
fixDown(1); -RCv7U`  
} !d|8'^gc  
file://fixdown j&llrN  
private void fixDown(int k) { AFtCqq#[  
int j; El1:?4;  
while ((j = k << 1) <= size) { zPE#[\O21B  
if (j < size %26amp;%26amp; queue[j] j++; %Ht ^yemQ  
if (queue[k]>queue[j]) file://不用交换 ;siJ~|6)  
break; b7f0#*(?  
SortUtil.swap(queue,j,k); 0Q*-g}wXfS  
k = j; j/`Up  
} LI:?Y_r  
} ;x RjQR  
private void fixUp(int k) { Z]e4pR6!  
while (k > 1) { ~GYpa t  
int j = k >> 1; G* Ib^;$u  
if (queue[j]>queue[k]) "0<Sd?Sz  
break; iiehrK&T !  
SortUtil.swap(queue,j,k); DrV0V .t,  
k = j; |?|K\UF(Y  
} 0i _  
} b7qnO jC  
Ix4jof6(  
} !a)s`  
$*aE$O6l  
} xrX?ZJ  
Dwk$CJb3-  
SortUtil: /\TlO.B=  
rN'.&;Y5  
package org.rut.util.algorithm; &V FjH W  
|Pj9ZG#  
import org.rut.util.algorithm.support.BubbleSort; ]#M/$?!]g2  
import org.rut.util.algorithm.support.HeapSort; H&u4v2  
import org.rut.util.algorithm.support.ImprovedMergeSort; I4CHfs"ar  
import org.rut.util.algorithm.support.ImprovedQuickSort; afV P-m4L  
import org.rut.util.algorithm.support.InsertSort; &Ky3Jb<:Gt  
import org.rut.util.algorithm.support.MergeSort; ax;{MfsK  
import org.rut.util.algorithm.support.QuickSort; T!&jFy*W  
import org.rut.util.algorithm.support.SelectionSort; ->Q`'@'|P  
import org.rut.util.algorithm.support.ShellSort; )MMhlcNC  
<Q\H  
/** g!.Ut:8L9  
* @author treeroot sOjF?bCdO  
* @since 2006-2-2 \/ X{n*Hw?  
* @version 1.0 1wU=WE(kKZ  
*/ f^ywW[dF  
public class SortUtil { /H.(d 4C  
public final static int INSERT = 1; ^,~N7`  
public final static int BUBBLE = 2; T:dX4=z  
public final static int SELECTION = 3; Y+OYoI  
public final static int SHELL = 4; <XY;fhnB  
public final static int QUICK = 5; Iy6p>z|  
public final static int IMPROVED_QUICK = 6; i)GeX:  
public final static int MERGE = 7; olHH9R9:  
public final static int IMPROVED_MERGE = 8; c-ttds  
public final static int HEAP = 9; sio)_8tp  
CF,8f$:2  
public static void sort(int[] data) { /bu'6/!`  
sort(data, IMPROVED_QUICK); KuU3DTS85Z  
} .wM:YX'[G  
private static String[] name={ !k%l+I3J[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Gmqs`{tc  
}; kf}F}Ad:%  
A-X  
private static Sort[] impl=new Sort[]{ 5>N6VeM  
new InsertSort(), y4 dp1<t%  
new BubbleSort(), kT>r<`rt  
new SelectionSort(), 9$:QLE+t  
new ShellSort(), -MQZiq7H4  
new QuickSort(), @*bvMEE  
new ImprovedQuickSort(), Zm`'MsgFr  
new MergeSort(), :QxL 9&"  
new ImprovedMergeSort(), +p8qsT#7  
new HeapSort() T-hU+(+hg  
}; 9*7Hoi4Ji  
[0d-CEp[  
public static String toString(int algorithm){ H-;&xzAI  
return name[algorithm-1]; v&k>0lV, ^  
} l7!U),x%/U  
Xs{:[vRW  
public static void sort(int[] data, int algorithm) { =W;t@"6>2  
impl[algorithm-1].sort(data); TEH*@~P"  
} )RpqZe/h4  
oqm  
public static interface Sort { L`<T'3G  
public void sort(int[] data); `wP/Zp{Hy  
} %kF TnXHK  
200L  
public static void swap(int[] data, int i, int j) { HGU?bJ~6o  
int temp = data; iMP*]K-O  
data = data[j]; }<6oFUZ  
data[j] = temp; T][-'0!  
} bbE bf !E  
} KyuA5jQ7  
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