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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。 q m3\) 9C  
插入排序: amBg<P`'_  
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package org.rut.util.algorithm.support; Gm~([Ln{  
ohx[_}xN  
import org.rut.util.algorithm.SortUtil; / *0t_  
/** n]%- 2`}(  
* @author treeroot |[\;.gT K  
* @since 2006-2-2 N /4E ~^2  
* @version 1.0 kAftW '  
*/ D"7}&Ry:  
public class InsertSort implements SortUtil.Sort{ 55Ss%$k@  
x#1 Fi$.  
/* (non-Javadoc) c~ss^[qx|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i]8O?Ab>?  
*/ zakhJ  
public void sort(int[] data) { 2W AeSUX  
int temp; ?qh-#,O9B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "{q#)N  
} #{i*9'  
} !_fDL6a-  
} WAu>p3   
NxP(&M(  
} Kz HYh  
lC<;Q*Y  
冒泡排序: ' zyw-1  
i|:!I)(lh  
package org.rut.util.algorithm.support; e3I""D{)[=  
/jv/qk3i  
import org.rut.util.algorithm.SortUtil; zsL@0]e&  
D|uvgu2  
/** rXx#<7`  
* @author treeroot ,\4]uZ<  
* @since 2006-2-2 c_8&4  
* @version 1.0 ZW4f "  
*/ e~)[I!n  
public class BubbleSort implements SortUtil.Sort{ 3>O|i2U  
ug3\K83aj/  
/* (non-Javadoc) 09kR2(nsW/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y`I>|5[ `  
*/ +%dXB&9x|Z  
public void sort(int[] data) { >0^<<=m  
int temp; EX,>V,.UV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wh$bDT Cj  
if(data[j] SortUtil.swap(data,j,j-1); U>S  
} 4XkI? l  
} k^5Lv#Z  
} : |'(T[~L  
} w~ Tg?RH:  
05d0p|},  
} `TBXJ(Y  
=uP? ?E  
选择排序: ( bwD:G9  
)+ .=z  
package org.rut.util.algorithm.support; yRXML\Ge  
X%Ok ">  
import org.rut.util.algorithm.SortUtil; b3A0o*  
-FZC|[is  
/** fi?4!h  
* @author treeroot O8]e(i  
* @since 2006-2-2 C`5'5/-.  
* @version 1.0  .NOAp  
*/ HTQZIm  
public class SelectionSort implements SortUtil.Sort {  -WC0W  
l=?e0d>O  
/* (< +A  w7  
* (non-Javadoc) (Pc>D';{S  
* Fh#QS'[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $/wm k7T  
*/ e]4$H.dP  
public void sort(int[] data) { 2<D| {  
int temp; X^\D"fmE.  
for (int i = 0; i < data.length; i++) { \n<! ld  
int lowIndex = i; VLuHuih  
for (int j = data.length - 1; j > i; j--) { erH,EE^-x<  
if (data[j] < data[lowIndex]) { )/RG-L  
lowIndex = j; 4'QX1p  
} uw;Sfx,s  
} x|O7}oj  
SortUtil.swap(data,i,lowIndex); v,w af`)J  
} Giyh( DL  
} yE}\4_0I/  
&8$v~  
} T$;S   
bP18w0>,  
Shell排序: 1!z{{H;W  
{JE [  
package org.rut.util.algorithm.support; IkCuw./  
*yBVZD|?H  
import org.rut.util.algorithm.SortUtil; %8*:VR  
PaCC UF  
/** DY2*B"^  
* @author treeroot / VYT](  
* @since 2006-2-2 u)oAQ<w  
* @version 1.0 ~ZKJ:&f  
*/ eF+F"|1h  
public class ShellSort implements SortUtil.Sort{ 'f( CN3.!  
64B.7S88  
/* (non-Javadoc) <>HtXn/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x^ `/&+m  
*/ w;'XqpP$*|  
public void sort(int[] data) { ~?\U];l  
for(int i=data.length/2;i>2;i/=2){ q?!HzZ  
for(int j=0;j insertSort(data,j,i); JL M Xkcc  
} =gVMt  
} {irc0gI  
insertSort(data,0,1); 0'o[ 2,  
} <h -)zI  
l7-lXl"%q  
/** Ema[M5$R  
* @param data qo [[P)tq  
* @param j +ktv : d  
* @param i #W~jQ5NS\  
*/ sOhn@*X  
private void insertSort(int[] data, int start, int inc) { A5nggg4  
int temp; u W]gBhO$O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <K CI@  
} 5r5on#O&  
} P@v"aa\@2)  
} 5wue2/gl  
Fb{N>*l.  
} $1.-m{Bd  
HVa9b;  
快速排序: Yq ]sPE92  
1jKpLTSs  
package org.rut.util.algorithm.support; m.D8@[y  
aE~T!h  
import org.rut.util.algorithm.SortUtil; N<Sl88+U  
~.T|n =  
/** w)7y{ya$  
* @author treeroot ;W- A2g  
* @since 2006-2-2 x?L0R{?WW  
* @version 1.0 gmVN(K}SR5  
*/ a2P)@R  
public class QuickSort implements SortUtil.Sort{ Mt.Cj;h@^[  
C^ZoYf8+"m  
/* (non-Javadoc) Ph^1Ko" 2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , >7PG2 a  
*/ L3b0e_8>R  
public void sort(int[] data) { (OiV IH  
quickSort(data,0,data.length-1); CnZ!b_J  
} uWJJ\  
private void quickSort(int[] data,int i,int j){ [/a AH<9b  
int pivotIndex=(i+j)/2; TtkHMPlm_  
file://swap kL DpZ{  
SortUtil.swap(data,pivotIndex,j); ~vXbh(MX  
]Thke 4  
int k=partition(data,i-1,j,data[j]); rl}<&aPH  
SortUtil.swap(data,k,j); LK}g<!o(  
if((k-i)>1) quickSort(data,i,k-1); 6Z|h>H5 a  
if((j-k)>1) quickSort(data,k+1,j); f2e;N[D  
D$>!vD'  
} 8i',~[  
/** I8XP`Ccq  
* @param data ^6 wWv&G[8  
* @param i lie,A  
* @param j ,zgz7  
* @return Ch]d\GM  
*/ +zh\W9  
private int partition(int[] data, int l, int r,int pivot) { ~cc }yDe  
do{ lTC0kh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ao)';[%9s  
SortUtil.swap(data,l,r); 35l%iaj]G5  
} /ZyMD(_J  
while(l SortUtil.swap(data,l,r); ]W;6gmV  
return l; YYpC!)  
} sJLOz>  
yeiIP  
} Erw1y,mF  
&dtst??  
改进后的快速排序: &|x7T<,)  
\Y!#Y#c  
package org.rut.util.algorithm.support; PA'&]piPl:  
|$\K/]q -  
import org.rut.util.algorithm.SortUtil; 1["i,8zB  
254V)(t^QM  
/** \-yI dKj  
* @author treeroot VpJKH\)Rt(  
* @since 2006-2-2 b? o  
* @version 1.0 p6%Vf  
*/ O14QlIk  
public class ImprovedQuickSort implements SortUtil.Sort { QF/ULW0G!  
<|l}@\iRX  
private static int MAX_STACK_SIZE=4096; 'Q=;I  
private static int THRESHOLD=10; M{ncWq*_j  
/* (non-Javadoc) <&m50pq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jfG of*  
*/ D% jGK  
public void sort(int[] data) { G4'Ia$  
int[] stack=new int[MAX_STACK_SIZE]; pa46,q&M  
x`g,>>&C  
int top=-1; $z[S0Cm  
int pivot; +(2$YJ35  
int pivotIndex,l,r; JuSS(dJw  
J$}]p  
stack[++top]=0; <8}FsRr;J  
stack[++top]=data.length-1; eN<L)a:J_  
HQ@g6  
while(top>0){ l/={aF7+  
int j=stack[top--]; D^4nT,&8  
int i=stack[top--]; WO.u{vW]'  
VgVDTWs7  
pivotIndex=(i+j)/2; Qa,=  
pivot=data[pivotIndex]; TVcA%]y{;  
E !ndXz 59  
SortUtil.swap(data,pivotIndex,j); o MJ `_  
eyK xnBz  
file://partition X.>=&~[  
l=i-1; fJlNxdVr  
r=j; n5=U.r  
do{ A1/@KC"&{G  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :&wb+tV  
SortUtil.swap(data,l,r); xnMcxys~  
} y@!M<#SEzG  
while(l SortUtil.swap(data,l,r); 2{?]W/&fS  
SortUtil.swap(data,l,j); ;j%I1k%A  
T3fQ #p  
if((l-i)>THRESHOLD){ (ODwdN7;  
stack[++top]=i; JwbZ`Z*w  
stack[++top]=l-1; P7F"#R0QB  
} kBZ1)?   
if((j-l)>THRESHOLD){ Q3WI @4  
stack[++top]=l+1; d1/WUKmbZ  
stack[++top]=j; by<@\n2B:U  
} ir<e^a  
hnFpC1TO  
} {A/^;X{N^  
file://new InsertSort().sort(data); 8;?4rrS  
insertSort(data); =sk[I0W  
} FGi7KV=N  
/** 8</wQ6&|  
* @param data 5hmfdj6  
*/ \'Ae,q|w  
private void insertSort(int[] data) { 0Ncpi=6  
int temp; @e<( o UE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k4iiL<|  
} [uU!\xe  
} ],SQD3~9  
} f(pq`v^-n  
_e@8E6#ce  
} #VrIU8Q7'  
I6 ?(@,  
归并排序: B,\VLX  
Dsm1@/"i|7  
package org.rut.util.algorithm.support; ] :;x,$k  
K ~mUO  
import org.rut.util.algorithm.SortUtil; aG]>{(~cL  
y2I7Zd .  
/** rD=D.1_   
* @author treeroot -g~+9/;n  
* @since 2006-2-2 +7b8ye  
* @version 1.0 _nqnO8^IG4  
*/ Mq$K[]F  
public class MergeSort implements SortUtil.Sort{ ULAr!  
jn5xYKv  
/* (non-Javadoc) B`mJT*B[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U|3!ixk>>w  
*/ upuN$4m&{  
public void sort(int[] data) { zzZ EX  
int[] temp=new int[data.length]; C=+9XfP0  
mergeSort(data,temp,0,data.length-1); I5M\PK/  
} KzVi:Hm  
^;_~ mq.  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5z_d$.CIc  
int mid=(l+r)/2; 5VV}wR  
if(l==r) return ; 0<%$lr  
mergeSort(data,temp,l,mid); !vnC-&G  
mergeSort(data,temp,mid+1,r); cR3d& /_,U  
for(int i=l;i<=r;i++){ es*$/A  
temp=data; M<Wi:r:  
} 9;#RzelSp  
int i1=l; V^,gpTyv*  
int i2=mid+1; X8*g#lO?  
for(int cur=l;cur<=r;cur++){ -F7F 6!s  
if(i1==mid+1) J.yM@wPS>  
data[cur]=temp[i2++]; G[mqLI{q  
else if(i2>r) Lyhuyb)k5^  
data[cur]=temp[i1++];  ?CAU+/  
else if(temp[i1] data[cur]=temp[i1++]; - UkK$wP5  
else c;kU|_  
data[cur]=temp[i2++]; m,Y/ke\  
} ZK]qQrIwy  
} {J==y;dK  
Bg]VaTm[=  
} Ow4_0l&  
-LiGO#U  
改进后的归并排序: 4<-Kd~uL  
eS!]..%y  
package org.rut.util.algorithm.support; 6o^>q&e}%  
-{0Pq.v  
import org.rut.util.algorithm.SortUtil; M)ET 1ZM  
,4H? +|!  
/** WhW}ZS'r  
* @author treeroot ceG\Q2  
* @since 2006-2-2 hH`x*:Qja  
* @version 1.0 iI<c  
*/ tLOGj?/r  
public class ImprovedMergeSort implements SortUtil.Sort {  Gk~aTO  
r)|~Rs!y,  
private static final int THRESHOLD = 10; LWM<[8wJ4  
T!H(Y4A  
/* } [#8>T  
* (non-Javadoc) NIQ}A-b  
* Z^V;B _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DKS1Sm6d0  
*/ j~N*TXkC  
public void sort(int[] data) { H=BI%Z  
int[] temp=new int[data.length]; s^zlBvr|.  
mergeSort(data,temp,0,data.length-1); I#MPJ@*WT  
} fo,0NxF9  
sLA.bp.O  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4<($ZN8  
int i, j, k; 'mZ v5?  
int mid = (l + r) / 2; ^# $IoW  
if (l == r) 7 {92_xRL  
return; Z)|~  
if ((mid - l) >= THRESHOLD) aLg,-@  
mergeSort(data, temp, l, mid); \s#~ %l  
else kx(beaf  
insertSort(data, l, mid - l + 1); 1;/SXJ s  
if ((r - mid) > THRESHOLD) b;VIR,2  
mergeSort(data, temp, mid + 1, r); 7"Xy8]i{z  
else zn>lF  
insertSort(data, mid + 1, r - mid); edMCj  
G Uu8 N  
for (i = l; i <= mid; i++) { R%3yxnM*  
temp = data; Z@euO~e~  
} TIJH} Ri  
for (j = 1; j <= r - mid; j++) { d`= ~8`  
temp[r - j + 1] = data[j + mid]; sGY}(9ED;  
} C)U4Fr ?E:  
int a = temp[l]; M1eh4IVE?  
int b = temp[r]; sR/Y v  
for (i = l, j = r, k = l; k <= r; k++) { ""7H;I&  
if (a < b) { e&x)g;bn  
data[k] = temp[i++]; <ci(5M  
a = temp; 7;p/S#P:  
} else { bR7tmJ[)Z  
data[k] = temp[j--]; cgG*7E  
b = temp[j]; .h <=C&Yg  
} fcdXj_u  
} G T~rr*X  
} &n | <NF  
=-oP,$k  
/** M<Bo<,!ua  
* @param data n*9QSyJN]  
* @param l S!A:/(^WB  
* @param i @2"uJ6o  
*/ P.>fkO1\  
private void insertSort(int[] data, int start, int len) { -F/)-s6#!'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oL~1M=r  
} }m<+tn3m  
} sFZdj0tQ4  
} p8 S~`fjV  
} N_ ODr]L  
Dl.< (/  
堆排序: Y"t|0dO%b  
dXDyY  
package org.rut.util.algorithm.support; q2xAx1R`sV  
iY`[dsT  
import org.rut.util.algorithm.SortUtil; t? &;   
aO$0[-A  
/** +On2R&m  
* @author treeroot imADjBR]  
* @since 2006-2-2 jk`U7 G*  
* @version 1.0 IsT}T}p,t  
*/ Uhvy 2}w  
public class HeapSort implements SortUtil.Sort{ YN)qMI_ `A  
Pm P&Qje7  
/* (non-Javadoc) 9=}#.W3.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Jvo%Y  
*/ IgJG,!>h  
public void sort(int[] data) { |d&Kr0QIV  
MaxHeap h=new MaxHeap(); c*#$sZ@YA  
h.init(data); d0T 8Cwc b  
for(int i=0;i h.remove(); *As"U99(  
System.arraycopy(h.queue,1,data,0,data.length); yx#!2Z0hw  
} }{:Jj/d p  
.Od@i$E>&  
private static class MaxHeap{ b:9"nALgC  
?4%#myO3a  
void init(int[] data){ d3a!s  
this.queue=new int[data.length+1]; L"0dB.  
for(int i=0;i queue[++size]=data; J_+2]X7n  
fixUp(size); rk %pA-P2  
} %l%ad-V  
} 0Bgj.?l  
a:P+HU:  
private int size=0; \gT({XU?  
q !}~c  
private int[] queue; !gyW15z'  
'~yxu$aK  
public int get() { z*VK{O)o  
return queue[1]; 6GAEQ]  
} Y, Lpv|  
N\s-{7K  
public void remove() { k3LHLJZ#  
SortUtil.swap(queue,1,size--); BV<_1 WT}  
fixDown(1); Foj|1zJS_  
} CNV^,`FX  
file://fixdown  {y{O ze  
private void fixDown(int k) { bfb9A+]3'  
int j; zBca$Vp  
while ((j = k << 1) <= size) { \*5z0A9)5)  
if (j < size %26amp;%26amp; queue[j] j++; S^1ZsD.  
if (queue[k]>queue[j]) file://不用交换 ??Urm[Y.Z  
break; a"}ndrc*  
SortUtil.swap(queue,j,k); `E;xI v|  
k = j; uYO$gRem  
} ENA"T-p  
} [fwk[qFa  
private void fixUp(int k) { P7X3>5<;q  
while (k > 1) { '4GN%xi  
int j = k >> 1; uQ ]ZMc  
if (queue[j]>queue[k]) 1.,KN:qe  
break; t\:=|t,  
SortUtil.swap(queue,j,k); ;fQIaE&H  
k = j; "\lO Op^-  
} *k&V;?x|wt  
} 6[FXgCb  
<D&  Ep  
} V~8]ag4  
lRS'M,/  
} )~xH!%4F  
lV./K;\T  
SortUtil: //3fgoly  
> B;YYj~f}  
package org.rut.util.algorithm; lwG)&qyVd  
Dm?:j9o]g  
import org.rut.util.algorithm.support.BubbleSort; d=\TC'd"{  
import org.rut.util.algorithm.support.HeapSort; :rk6Stn$z  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2.{zf r  
import org.rut.util.algorithm.support.ImprovedQuickSort; vytO8m%U  
import org.rut.util.algorithm.support.InsertSort; 7#&Q-3\:  
import org.rut.util.algorithm.support.MergeSort; 5ld?N2<8/  
import org.rut.util.algorithm.support.QuickSort; wU/fGg*M2  
import org.rut.util.algorithm.support.SelectionSort; `S3)uV]I  
import org.rut.util.algorithm.support.ShellSort; QX a2qxTc  
`Y!8,( 5#  
/** =(R3-['QIb  
* @author treeroot %b h: c5  
* @since 2006-2-2 <Pf4[q&wM  
* @version 1.0 O#!|2qN  
*/ [Tvdchl OC  
public class SortUtil { ~USyN'5lU7  
public final static int INSERT = 1; 0e:j=kd)NH  
public final static int BUBBLE = 2; 6h) &h1Yd  
public final static int SELECTION = 3; Wj)v,v2&  
public final static int SHELL = 4; RP 6<#tq,  
public final static int QUICK = 5; 19[.&-u"  
public final static int IMPROVED_QUICK = 6; [Ak 0kH >  
public final static int MERGE = 7; %LqT>HXJ  
public final static int IMPROVED_MERGE = 8; WK0IagYw  
public final static int HEAP = 9; F *U.cJ%  
;B }4pv}  
public static void sort(int[] data) { lN"@5(5%  
sort(data, IMPROVED_QUICK); -`X`Ff  
} hq&9S{Ep  
private static String[] name={ A*|\E:fo  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3 l j^I  
}; Rb^G~82d?  
B<.ZW}#v  
private static Sort[] impl=new Sort[]{ m.gv?  
new InsertSort(), ;Ob^@OM  
new BubbleSort(), ]W`M <hEI  
new SelectionSort(), 7 > _vH]  
new ShellSort(), BEAY}P(y3  
new QuickSort(), dtG>iJ  
new ImprovedQuickSort(), q&:%/?)x  
new MergeSort(), McbbEs=)  
new ImprovedMergeSort(), wZ`*C mr  
new HeapSort() fC}uIci  
}; d&ff1(j(  
%n,_^voE  
public static String toString(int algorithm){ DHvZ:)aT}  
return name[algorithm-1]; A&jR-%JG  
} $EdL^Q2KAy  
fU.z_ T[@  
public static void sort(int[] data, int algorithm) { n b*`GE  
impl[algorithm-1].sort(data); 7pyaHe  
} s gZlk9x!Q  
6 !Mm")  
public static interface Sort { qjg Z  
public void sort(int[] data); soLmr's  
} zG%'Cw)8  
bx-:aC)]2  
public static void swap(int[] data, int i, int j) { _$8:\[J  
int temp = data; IO2@^jup  
data = data[j]; oe=1[9T"  
data[j] = temp; s=K?-O  
} m*lcIa  
} yI-EF)A@;  
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