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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。 &gJKJ=7  
插入排序: fDc>E+,  
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package org.rut.util.algorithm.support; [NcS[*qp  
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import org.rut.util.algorithm.SortUtil; (;utiupW  
/** d,=Kv  
* @author treeroot ""Ul6hRgv  
* @since 2006-2-2 EtN@ 6xP  
* @version 1.0 bc}X.IC  
*/ vW4~\]  
public class InsertSort implements SortUtil.Sort{ `@GqD  
`|K,E  
/* (non-Javadoc) b?Wg|D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3L/qU^`  
*/ =a rk?<E  
public void sort(int[] data) { %M8Egr2|0  
int temp; a%*l]S0z"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~ILig}I  
} ;9r Z{'i+|  
}  Q(SVJ  
} 1xK'1g72  
xt]Z{:.  
} SQ#6~zxl  
d q=>-^o  
冒泡排序: l@` D;m  
NfLvK o8  
package org.rut.util.algorithm.support; l,uYp"F,ps  
eeIh }t>[  
import org.rut.util.algorithm.SortUtil; x4v@Kk/  
w+Ve T@  
/** kg[u@LgvoN  
* @author treeroot tq=1C=h  
* @since 2006-2-2 dDH+`;$.  
* @version 1.0 <4jQbY;  
*/ y7SOz'd  
public class BubbleSort implements SortUtil.Sort{ :0o $qz2  
h"VQFqQy  
/* (non-Javadoc) Tks;,C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cT{iMgdI?  
*/ AoHA+>&U  
public void sort(int[] data) { .4={K)kz|F  
int temp; *D`qcv  
for(int i=0;i for(int j=data.length-1;j>i;j--){ VlW#_.  
if(data[j] SortUtil.swap(data,j,j-1); Hv%(9)-8  
} ln.kEhQ3B  
} 8D]:>[|E  
} n+@}8;oeP  
} g+/%r91hZ  
3{_AzL  
} 3WyK!@{  
j&E4|g (  
选择排序: 5@c,iU-L  
$w%oLI@kl  
package org.rut.util.algorithm.support; /^96|  
!8&,GT  
import org.rut.util.algorithm.SortUtil; a?'3  
;ak3 @Uee  
/** 3ojK2F(1D  
* @author treeroot 1wUZ0r1'  
* @since 2006-2-2 Cw?AP6f%  
* @version 1.0 xrx{8pf  
*/ 1!/+~J[#  
public class SelectionSort implements SortUtil.Sort { { frEVHw  
WO*yJ`9]  
/* zO{$kT\r&  
* (non-Javadoc) )6)|PzMQ'  
* j)\&#g0u6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7'FDI`e[  
*/ THH rGvb  
public void sort(int[] data) { 3(P^PP8  
int temp; 475yX-A  
for (int i = 0; i < data.length; i++) {  N>`+{  
int lowIndex = i; "M6a_rZ2W  
for (int j = data.length - 1; j > i; j--) { TI}H(XL(  
if (data[j] < data[lowIndex]) { vZ 4Z+;.  
lowIndex = j; Y~1}B_  
} etf ft8  
} La%\- o  
SortUtil.swap(data,i,lowIndex); 7UHqiA`L  
} ?97MW a   
} DGY#pnCu  
yb/< 7  
} W9 y8dw.  
Orh5d 7+S  
Shell排序: uZZ[`PA(  
QxnP+U~N  
package org.rut.util.algorithm.support; 3DK^S2\zBm  
o!mf d}nG  
import org.rut.util.algorithm.SortUtil; d;S:<]l'  
8DTk<5mW~  
/** ;]fpdu{  
* @author treeroot `.a L>hf  
* @since 2006-2-2 F$r8 hj`  
* @version 1.0 567ot|cc  
*/ 5!#"8|oY  
public class ShellSort implements SortUtil.Sort{ el!Bi>b9c!  
w|WZEu:0|  
/* (non-Javadoc) ^a; V-US  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4W9!_:j(j  
*/ *p?b"{_a  
public void sort(int[] data) { q`1t*<sk  
for(int i=data.length/2;i>2;i/=2){ 7qE V5!  
for(int j=0;j insertSort(data,j,i); qNHS 1  
} w GZ(bKyO  
} =\4w" /Y  
insertSort(data,0,1); 7g ]]>  
} 7~\Dzcfk"P  
NOyLZa'  
/** QXJD' c  
* @param data ZC"6B(d  
* @param j ]+0-$t7Y  
* @param i m?<8 ':  
*/ R $'}Z  
private void insertSort(int[] data, int start, int inc) { ?y<n^`  
int temp; XeDU ,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3+A 0O%0*  
} t)XV'J  
} O RQGay  
} iN<5[ztd  
6?*iIA$b  
} SJU93n"G/  
n!Y.?mU6  
快速排序: t{~"vD9Am  
5YS`v#+  
package org.rut.util.algorithm.support; vlIdi@V  
^'EEry  
import org.rut.util.algorithm.SortUtil;  QN_5q5  
V EY!0PIj  
/** @mP@~  
* @author treeroot 1+eC'&@Xjt  
* @since 2006-2-2 #*S/Sh?Q  
* @version 1.0 1bzPBi  
*/ ;ok];4`a  
public class QuickSort implements SortUtil.Sort{ jLr8?Hyf  
4L!{U@ '  
/* (non-Javadoc) IUd>jHp`6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ItM?nyA  
*/ c09] Cp<  
public void sort(int[] data) { { w!}:8p  
quickSort(data,0,data.length-1); um ,/^2A  
} N)poe2[  
private void quickSort(int[] data,int i,int j){ ]`m|A1(  
int pivotIndex=(i+j)/2; m.K"IXD  
file://swap ]?``*{Zqy  
SortUtil.swap(data,pivotIndex,j); u"T5m  
ls*^ 3^O  
int k=partition(data,i-1,j,data[j]); @TgCI`E   
SortUtil.swap(data,k,j); @Jm$<E  
if((k-i)>1) quickSort(data,i,k-1); 4] ?  
if((j-k)>1) quickSort(data,k+1,j); oPa2GW8  
*qOo,e  
} Ix:aHl  
/** g-^CuXic  
* @param data }$qy_Esl  
* @param i "Wi`S;  
* @param j &}T`[ d_Z  
* @return wCmwH=O  
*/ ?\vJ8H[bD  
private int partition(int[] data, int l, int r,int pivot) { E}NX+ vYF  
do{ CKh-+8j  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7%7_i%6wP  
SortUtil.swap(data,l,r); tm]75*?  
} GQ8I |E  
while(l SortUtil.swap(data,l,r); Z?nMt  
return l; I">z#@CT  
} I*lq0&  
qsJA|z&6x  
} [j93Mp  
?R,^prW{  
改进后的快速排序: d=>5%$:v  
$~D`-+J  
package org.rut.util.algorithm.support; |d%Dw^  
3N]pN<3@  
import org.rut.util.algorithm.SortUtil; d+&V^qLJ  
!5A nr  
/** W{-N,?z  
* @author treeroot f2{4Y)  
* @since 2006-2-2 }WCz*v1Wq  
* @version 1.0 2o\\qEYg  
*/ up:e0di{  
public class ImprovedQuickSort implements SortUtil.Sort { V7lDuiAI  
-q+Fj;El  
private static int MAX_STACK_SIZE=4096; 0A1l"$_|  
private static int THRESHOLD=10; kN}.[enI~  
/* (non-Javadoc) l>=c]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @F,HyCSN  
*/ ,YkQJ$  
public void sort(int[] data) { @L0wd>  
int[] stack=new int[MAX_STACK_SIZE]; t#P)KcWOt  
HvTi^Fb\a  
int top=-1; <M$hj6.tn  
int pivot; QT|mN  
int pivotIndex,l,r; CS"p[-0  
&UzZE17R  
stack[++top]=0; {g @ *jo&  
stack[++top]=data.length-1; dvL'>'g  
<|2_1[,sl  
while(top>0){ Kjf#uU.7  
int j=stack[top--]; "\>3mVOb  
int i=stack[top--]; nmSpNkJ5  
+i)1 jX<  
pivotIndex=(i+j)/2; c89RuI `B~  
pivot=data[pivotIndex]; 5mFi)0={y  
:_e.ch:4  
SortUtil.swap(data,pivotIndex,j); ax 3:rl  
Q]|+Y0y}X  
file://partition VS}Vl  
l=i-1; ;<MaCtDt  
r=j; u*9C(je  
do{ }XXE hOO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k"sL.}$  
SortUtil.swap(data,l,r); Cog:6Gnw  
} c3 wu&*p{  
while(l SortUtil.swap(data,l,r); tXp)o >"  
SortUtil.swap(data,l,j); 2XI%4  
SA/0Z=  
if((l-i)>THRESHOLD){ ,U2D &{@  
stack[++top]=i; \/$v@5  
stack[++top]=l-1; r} ,|kb  
} &pmJ:WO,h  
if((j-l)>THRESHOLD){ hqBwA1](a  
stack[++top]=l+1; |RjjP 7  
stack[++top]=j; R 7{ rY  
} xeHu-J!P  
?&X6VNbU  
} sP+S86 u  
file://new InsertSort().sort(data); BFEo:!'F  
insertSort(data); NKB! _R+  
} HFDg@@  
/** I 9u=RI s  
* @param data Jz|(B_U  
*/ xv%}xeE V  
private void insertSort(int[] data) { RV($G8U  
int temp; k[zf`x^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?.Kl/8ml  
} 'PO1{&M  
} 4o=G) KO{  
} X'u`\<&W  
|BW956fBU  
} }YSH8d  
Qy$QOtrv  
归并排序: PAc~p8S  
p5 [uVRZ  
package org.rut.util.algorithm.support; -!}1{   
1u` Z?S(  
import org.rut.util.algorithm.SortUtil; S\X_!|  
$jzk4V  
/** u(~s$ENl  
* @author treeroot Bo0y"W[+  
* @since 2006-2-2 s e1ipn_A  
* @version 1.0 xj~6,;83xR  
*/ WkO .  
public class MergeSort implements SortUtil.Sort{ I3L1|!  
x[?_F  
/* (non-Javadoc) wXZ-%,R -D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zn^E   
*/ \GWq0z&  
public void sort(int[] data) { FE5R ^W#u-  
int[] temp=new int[data.length]; y%GV9  
mergeSort(data,temp,0,data.length-1); MUo?ajbqOd  
} ~ACB #D%  
e-s@@k  
private void mergeSort(int[] data,int[] temp,int l,int r){ Vnl~AQfk|  
int mid=(l+r)/2; #2MwmIeA  
if(l==r) return ; h\dIp`H  
mergeSort(data,temp,l,mid); nph{  
mergeSort(data,temp,mid+1,r); %*/[aq,#  
for(int i=l;i<=r;i++){ 'v,W gPe  
temp=data; P*LcWrK  
} rvG qUmSUs  
int i1=l; &B.r&K&  
int i2=mid+1; Y.73I83-j  
for(int cur=l;cur<=r;cur++){ s R~&S))  
if(i1==mid+1) B8nXWi  
data[cur]=temp[i2++]; IM#+@vv  
else if(i2>r) H}@|ucM"\  
data[cur]=temp[i1++]; u)V*o  
else if(temp[i1] data[cur]=temp[i1++]; f*I5 m=  
else q+DH2&E'  
data[cur]=temp[i2++]; a=J?[qrx  
} _+. t7q^  
} z=xHk|+'  
CJC|%i3  
} 55I>v3 w  
%MIu;u FR  
改进后的归并排序: 646ye Q1  
;z?XT \C$  
package org.rut.util.algorithm.support; <hea%6  
}iC~B}  
import org.rut.util.algorithm.SortUtil; 0{ ,zE  
V?"^Ff3m!  
/** GWW@8GNI  
* @author treeroot YO Y+z\Q  
* @since 2006-2-2 m^=, RfUUd  
* @version 1.0 )_=&)a1U  
*/ \w:u&6,0O  
public class ImprovedMergeSort implements SortUtil.Sort { Ao\Vh\rQkq  
d;=,/a  
private static final int THRESHOLD = 10; sH]AB =_  
`~RV  
/* ? vlGr5#  
* (non-Javadoc) K c<z;  
* w0IB8GdF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `%Ghtm*  
*/ 1^;h:,e6  
public void sort(int[] data) { {aL$vgYT1  
int[] temp=new int[data.length]; Lr^xp,_n  
mergeSort(data,temp,0,data.length-1); \XN5))  
} |x4yPYBL  
|:?.-tq  
private void mergeSort(int[] data, int[] temp, int l, int r) { qh'BrYu*  
int i, j, k; K4yYNlY  
int mid = (l + r) / 2; 2%8Y-o?  
if (l == r) =, 0a3D6b  
return; {q)B@#p  
if ((mid - l) >= THRESHOLD) Z:hrrq9  
mergeSort(data, temp, l, mid); kziBHis!  
else z|<oxF.  
insertSort(data, l, mid - l + 1); 5:d2q<x:{  
if ((r - mid) > THRESHOLD) VB\6S G  
mergeSort(data, temp, mid + 1, r); M;Rw]M  
else of`]LU:  
insertSort(data, mid + 1, r - mid); >FHsZKJ  
=QfKDA  
for (i = l; i <= mid; i++) { |BkY"F7m9  
temp = data; t4*A+"~j  
} UT~2}B9fc  
for (j = 1; j <= r - mid; j++) { 48Lmy<}*  
temp[r - j + 1] = data[j + mid]; `.W;ptZ6  
} D.o|($S0  
int a = temp[l]; `Cf en8  
int b = temp[r]; f5 %&  
for (i = l, j = r, k = l; k <= r; k++) { 55LF  
if (a < b) { ug,|'<G+  
data[k] = temp[i++]; I0vn d7  
a = temp; %m) h1/l  
} else { sri#L+I  
data[k] = temp[j--]; h3EDN:FQ  
b = temp[j]; _ICDtG^  
} PL$F;d  
} mtQ{6u  
} dO;vcgvb  
{l&2Kd*  
/** +fQL~ 0tA  
* @param data ]~Vu-@ /}  
* @param l SWsv,  
* @param i 8{fz0H.<?  
*/ [0ffOTy  
private void insertSort(int[] data, int start, int len) { &[Zap6]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U<Y'.!  
} qetP93N_*  
} !TL}~D:J  
} by]|O  
} bM0[V5:jB  
K_|~3g  
堆排序: ~!-8l&C  
j~S!!Z ]  
package org.rut.util.algorithm.support; , ."(Gp  
% rY8  
import org.rut.util.algorithm.SortUtil; d3G{0PX  
`6N-MsP  
/** P"uHtHK  
* @author treeroot o-=d|dWG  
* @since 2006-2-2 4_762Gu%  
* @version 1.0 I,<54? vS  
*/ Gz|%;  
public class HeapSort implements SortUtil.Sort{ Wj j2J8B  
3).o"AN  
/* (non-Javadoc) uWB:"&!^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  LbX6p  
*/ EPe]-C`  
public void sort(int[] data) { wz*A<iU  
MaxHeap h=new MaxHeap(); >6[ X }  
h.init(data); *Qg5Z   
for(int i=0;i h.remove(); }K/}(zuy1Y  
System.arraycopy(h.queue,1,data,0,data.length); n;kciTD%wK  
} 4-+ozC{  
45)ogg2  
private static class MaxHeap{ V4eng "  
#x5N{8  
void init(int[] data){ qHR^0&  
this.queue=new int[data.length+1]; Oh/b?|imG  
for(int i=0;i queue[++size]=data; g| ._n  
fixUp(size); EID)o[<  
} Z;fm;X%4  
} 0^&(u:~  
Rnj Jg?I=  
private int size=0; d{2 y/  
-eR!qy:.]5  
private int[] queue; UbY~xs7_  
,qe]fo >  
public int get() { GSGyF  
return queue[1]; &Mhv XHI  
} {b|3]_-/  
c?.r"5#  
public void remove() { h0F0d^W.  
SortUtil.swap(queue,1,size--); M<A;IOpR+  
fixDown(1); 0q[p{_t`  
} d2C[wQF  
file://fixdown jr, &=C(  
private void fixDown(int k) { j<ABO")v  
int j; GUu\dl9WA'  
while ((j = k << 1) <= size) { YPha9M$AgU  
if (j < size %26amp;%26amp; queue[j] j++; )IFl 0<d  
if (queue[k]>queue[j]) file://不用交换 - E8ntY-  
break; ?iPZsV  
SortUtil.swap(queue,j,k); | V.S.'  
k = j; YN,y0t/cQ  
} s[G |q5n  
} S'Z70 zJ  
private void fixUp(int k) { mL:m;>JJ n  
while (k > 1) { DKy >]Hca  
int j = k >> 1; ~\IF9!  
if (queue[j]>queue[k]) $ \Q<K@{  
break; / h}PEu3y  
SortUtil.swap(queue,j,k); I.^X2  
k = j; 35Ai;mU'  
} je&dioZ>  
} I~\O  
/d0Q>v.g  
} f >mhFy  
,f8}q]FTA  
} /S:w&5e  
MU_!&(X_  
SortUtil: S}oG.r 9  
7?6xPKQ)H  
package org.rut.util.algorithm; e[x?6He,$  
A Gv!c($  
import org.rut.util.algorithm.support.BubbleSort; 0+T*$=?  
import org.rut.util.algorithm.support.HeapSort; ZYE' C  
import org.rut.util.algorithm.support.ImprovedMergeSort; \%sPNw=e  
import org.rut.util.algorithm.support.ImprovedQuickSort; &Ki> h  
import org.rut.util.algorithm.support.InsertSort; m b%C}8D  
import org.rut.util.algorithm.support.MergeSort; xS= _yO9-  
import org.rut.util.algorithm.support.QuickSort; 0JmFQ ^g(  
import org.rut.util.algorithm.support.SelectionSort; R%>jJ[4\[  
import org.rut.util.algorithm.support.ShellSort; b8rp8'M)  
8[8|*8xqs  
/** oN *SRaAp  
* @author treeroot kQ@gO[hS  
* @since 2006-2-2 UZzNVIXA%  
* @version 1.0 ]i-P-9PA4  
*/ ^I]LoG:  
public class SortUtil { P@qMJ}<j  
public final static int INSERT = 1; 7~_{.f  
public final static int BUBBLE = 2; Yo>`h2C4  
public final static int SELECTION = 3; `wNm%*g  
public final static int SHELL = 4; ).pO2lLF4  
public final static int QUICK = 5; /8f>':zUb  
public final static int IMPROVED_QUICK = 6; an3~'g?  
public final static int MERGE = 7; h/,R{A2mO  
public final static int IMPROVED_MERGE = 8; u@<Pu@?xm  
public final static int HEAP = 9; :lUX5j3  
nN>J*02(  
public static void sort(int[] data) { %b=Y <v  
sort(data, IMPROVED_QUICK); `_|aeoK_  
} h,^BC^VU9-  
private static String[] name={ u3U4UK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?nQ_w0j  
}; >BBl 7  
10mK}HT>4B  
private static Sort[] impl=new Sort[]{ }7K@e;YUg  
new InsertSort(), \ jE CSV|  
new BubbleSort(), ToV6lS"  
new SelectionSort(), BbFa=H.  
new ShellSort(), Hal7 MP  
new QuickSort(), }K2 /&kZ  
new ImprovedQuickSort(), !_qskDc-  
new MergeSort(), w#oGX  
new ImprovedMergeSort(), :*^:T_U  
new HeapSort() Vzpt(_><  
}; 59.$ULQVMY  
X4a^m w\"  
public static String toString(int algorithm){ M)L/d_4ka  
return name[algorithm-1]; Kl{-zX  
} zG_p"Z7,  
_}D%iJg#  
public static void sort(int[] data, int algorithm) { KE<kj$  
impl[algorithm-1].sort(data); .Y;b)]@f  
} l09Fn>wa  
"u_i[[y  
public static interface Sort { m+?N7  
public void sort(int[] data); 5L F/5`  
} 2gt+l?O<PS  
^EF'TO$  
public static void swap(int[] data, int i, int j) { yf!,4SUkU  
int temp = data; zJ;Rt9<7-  
data = data[j]; UVrQV$g!  
data[j] = temp; xq2V0Jp1u  
} Pg`JQC|  
} 9CB\n  
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