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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。 QQ,w:OjA0  
插入排序: )^^}!U#|e  
oDA'}[/  
package org.rut.util.algorithm.support; JR_c]AQYu  
L?y,xA_  
import org.rut.util.algorithm.SortUtil;  [7)#3  
/** zgpPu4t  
* @author treeroot VKrKA71Z~  
* @since 2006-2-2 Z3T26Uk  
* @version 1.0 7xT<|3 I  
*/ p@znmn-  
public class InsertSort implements SortUtil.Sort{ ^h|'\-d\  
n_] OYG>U  
/* (non-Javadoc) |om3*]7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Uz|sQ*G  
*/ :TWHmxch  
public void sort(int[] data) { }S&SL)  
int temp; L/cbq*L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [c6_6q As  
} Fn%:0j  
} Md m(xUs  
}  })w5`?Y  
a-DE-V Uls  
} :Ws3+OI'm3  
*KV] MdS  
冒泡排序: qdu:kA:]  
1-gX=8]]  
package org.rut.util.algorithm.support; C{S6Ri  
ln!KL'T]  
import org.rut.util.algorithm.SortUtil; 4';['  
X}bgRzj  
/** DFjkp;`1  
* @author treeroot tbk9N( R  
* @since 2006-2-2 8@Km@o]?  
* @version 1.0 J5rR?[i{  
*/ WCWBvw4&"{  
public class BubbleSort implements SortUtil.Sort{ bm7$DKp#  
r*3XM{bZ/@  
/* (non-Javadoc) 'XQv>J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A><%"9pZ  
*/ +Q_Gm3^  
public void sort(int[] data) {  L_Ai/'  
int temp; "ChBcxvxb:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z?YGE iR/}  
if(data[j] SortUtil.swap(data,j,j-1); T +4!g|Y  
} Ip 1QmP  
} ;[ zx'e?!  
} h/w- &7t  
} 42Ffx?Qmv  
hQ8{ A7  
} >\p}UPx  
,!py n<_  
选择排序: =O _[9kuJ  
02S(9^=  
package org.rut.util.algorithm.support; 2Uk8{d  
mg;AcAS.o,  
import org.rut.util.algorithm.SortUtil; i\eykYc,  
XAFTLNV>  
/** ?x/ L"h&Kp  
* @author treeroot ]ogy`O>  
* @since 2006-2-2 F^~#D, \  
* @version 1.0 E|Lh$9XONA  
*/ n*xNMw1x"T  
public class SelectionSort implements SortUtil.Sort { bU,& |K/  
'}Y8a$(;V  
/* =gqZ^v&5U  
* (non-Javadoc) ?3, *  
* ?8nG F%p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zj^H3 h  
*/ Ek. j@79  
public void sort(int[] data) { RGKJO_*J2  
int temp; +[7u>RJ  
for (int i = 0; i < data.length; i++) { K^vMIoh  
int lowIndex = i; =f p(hX"  
for (int j = data.length - 1; j > i; j--) { tw')2UGg  
if (data[j] < data[lowIndex]) { MdfkC6P  
lowIndex = j; 6a!X`%N=  
} VEZ/-s/  
} 0\o'd\  
SortUtil.swap(data,i,lowIndex); ?k?Hp:8?=  
} s`2o\]  
} zc(7p;w#p  
xMh&C{q  
} cS[`1y,\3  
0nuFWV  
Shell排序: pVY.&XBZ$  
5VcYdu3  
package org.rut.util.algorithm.support; ']NM_0  
O#|E7;  
import org.rut.util.algorithm.SortUtil; &pAT  
pQhv3F  
/** GgYomR:  
* @author treeroot Vqr&)i"b$  
* @since 2006-2-2 eyWwE%  
* @version 1.0 DQ}]'*@?  
*/ iB`m!g6$  
public class ShellSort implements SortUtil.Sort{ oAx0$]+%V)  
WQ]pg "  
/* (non-Javadoc) ] ge-b\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N!3f1d7RQ  
*/ \3/9lE|gh  
public void sort(int[] data) { Pg36'aTe%j  
for(int i=data.length/2;i>2;i/=2){ lo#,zd~  
for(int j=0;j insertSort(data,j,i); I R&u55#I6  
} S'e2~-p0F  
}  Ui.F<,E  
insertSort(data,0,1); ^eRuj)$5A  
} WveFB%@`;  
1,J.  
/** x@ O:  
* @param data wtKh8^:YD  
* @param j (qrT0D6  
* @param i 9+']`=a:  
*/ z=U!D `]v  
private void insertSort(int[] data, int start, int inc) { }ie]7N6;  
int temp; 9.B7Owgr89  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HKwGaCj`  
} |"< I\Vs:  
} !|/fVWH  
} uI[*uAR  
)em.KbsPPF  
} Z0=OR^HjA  
uwka 2aSS  
快速排序: T_-MSXhA  
KPhqD5, (  
package org.rut.util.algorithm.support; *GhRU5  
BTyVfq sx  
import org.rut.util.algorithm.SortUtil; `<n:D`{dZ  
`dZ|}4[1  
/** %r"GL  
* @author treeroot 9vu8koL  
* @since 2006-2-2 '3Ie0QO]"%  
* @version 1.0 -Me\nu8(RF  
*/ A.b#r[  
public class QuickSort implements SortUtil.Sort{ ^xwFjQXx  
(Wqhuw!u  
/* (non-Javadoc) (YOgQ)},  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I .ty-X]  
*/ h(-&.Sm")H  
public void sort(int[] data) { Q/9b'^UJ  
quickSort(data,0,data.length-1); [}p.*U_nw  
} @gc"-V*-/  
private void quickSort(int[] data,int i,int j){ EoeEg,'~F  
int pivotIndex=(i+j)/2; EiUV?Gvz  
file://swap `N|CL  
SortUtil.swap(data,pivotIndex,j); `^kST><  
?r<F\rBT7*  
int k=partition(data,i-1,j,data[j]); %"zJsYQ!  
SortUtil.swap(data,k,j); Biwdb  
if((k-i)>1) quickSort(data,i,k-1); $5r,Q{;$  
if((j-k)>1) quickSort(data,k+1,j); s|'L0` <B  
$ Zr,-  
} D.b<I79bX  
/** 0 y%R  
* @param data }[`?#`sW  
* @param i t,,^^ll  
* @param j v"+EBfx  
* @return ~~,<+X:  
*/ : 4WbDeR  
private int partition(int[] data, int l, int r,int pivot) { l0{DnQA>I  
do{ P}`1#$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?xZmm%JF  
SortUtil.swap(data,l,r); }q W aE  
} k;5}@3iQ  
while(l SortUtil.swap(data,l,r); r.;iO0[/  
return l; Rjl__90  
} :F=nb+HZ  
H)Ge#=;ckQ  
} 8)8oR&(f  
sIsu >eL  
改进后的快速排序: p%1m&/ `F  
[!mjUsut*  
package org.rut.util.algorithm.support; 1.uQ(>n  
su;S)yZb  
import org.rut.util.algorithm.SortUtil; ;7k7/f:  
>>zoG3H!  
/** KCE-6T  
* @author treeroot d Al<'~g  
* @since 2006-2-2 Zd ,=  
* @version 1.0 V bOLTc  
*/ RfG$Px '  
public class ImprovedQuickSort implements SortUtil.Sort { 9AzGk=^  
,r;d{  
private static int MAX_STACK_SIZE=4096; ]H~,K]@.  
private static int THRESHOLD=10; /H@")je  
/* (non-Javadoc) v!A|n3B]p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wt S*w  
*/ ,&] ` b#Rc  
public void sort(int[] data) { V JL;+  
int[] stack=new int[MAX_STACK_SIZE]; W2h[NimU  
l$_rA~Mo  
int top=-1; cV,Dl`1r  
int pivot; Po. BcytM  
int pivotIndex,l,r; \r,. hUp  
$:II @=  
stack[++top]=0; #9VY[<  
stack[++top]=data.length-1; #/<Y!qV&  
L$ Ar]O)  
while(top>0){ ,D,f9  
int j=stack[top--]; Fjt,  
int i=stack[top--]; $ n[7  
:-" jK w  
pivotIndex=(i+j)/2; "IJMvTmj  
pivot=data[pivotIndex]; MWh+h7k'  
q Xhf?x  
SortUtil.swap(data,pivotIndex,j); _C=[bI@  
>0#q!H,X  
file://partition arVf"3a  
l=i-1; JBAK*g  
r=j; XYF~Q9~  
do{ VQMd[/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |o=ST  
SortUtil.swap(data,l,r); t`t:qko  
} 5XO'OSdYq  
while(l SortUtil.swap(data,l,r); eAKQR  
SortUtil.swap(data,l,j); ik0Q^^1?Y  
n4T2'e  
if((l-i)>THRESHOLD){ p+UHJ&  
stack[++top]=i; <JM%Kn )  
stack[++top]=l-1; ^Jl!WH=20}  
} 4~YQ\4h=  
if((j-l)>THRESHOLD){ Prz +kPP  
stack[++top]=l+1; :k(t/*Nl3  
stack[++top]=j; E/$@ud|l"  
} LE80`t>M#  
*1S.9L  
} _|wY[YJ[  
file://new InsertSort().sort(data); x~Ly$A2p  
insertSort(data); Z)T@`B6  
} ?V:]u 3  
/** @ZR4%A"X4  
* @param data UH&1c8y}  
*/ rRrW   
private void insertSort(int[] data) { mW0&uSM D  
int temp; ieRBD6_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;}jbdS3  
} tSc>@Q_|  
} r9a!,^}F  
} '# IuY  
!XA%[u  
} !2U7gVt"*  
Mth`s{sATa  
归并排序: @j2*.ee  
HT=Am  
package org.rut.util.algorithm.support; Yn]y d1  
P| P fG=  
import org.rut.util.algorithm.SortUtil; (VPM>ndkw  
"q>I?UcZ  
/** gXLZ)>+A+  
* @author treeroot \{=`F`oB=  
* @since 2006-2-2 m<,G:?RM  
* @version 1.0 3et2\wOX1x  
*/ V&j.>Y  
public class MergeSort implements SortUtil.Sort{ C\^<v&  
A.C278^O8  
/* (non-Javadoc) imCl{vt(kj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xnuv4Z}]t  
*/ mc=! X  
public void sort(int[] data) { .Jat^iFj0  
int[] temp=new int[data.length]; Q()RO*9  
mergeSort(data,temp,0,data.length-1); -1r & s  
} ji)4WG/1  
(6#yw`\  
private void mergeSort(int[] data,int[] temp,int l,int r){ H0b6ZA%n  
int mid=(l+r)/2; ivUsMhx>S,  
if(l==r) return ; !0csNg!  
mergeSort(data,temp,l,mid); R{xyme@"^  
mergeSort(data,temp,mid+1,r); $aPHl  
for(int i=l;i<=r;i++){ [g h[F  
temp=data; LXu"rfp  
} %v+fN?%x,d  
int i1=l; u"8;fS  
int i2=mid+1; ~eV!!38 J  
for(int cur=l;cur<=r;cur++){ CNRU"I+jU  
if(i1==mid+1) xAd>",=~  
data[cur]=temp[i2++]; s3_e7D ^H  
else if(i2>r) Vkvb=  
data[cur]=temp[i1++]; : Nj`_2  
else if(temp[i1] data[cur]=temp[i1++]; h;ol"  
else *v nxP9<  
data[cur]=temp[i2++]; Rp`_Grcd  
} +`s&i%{1>  
} h6T/0YhWLP  
,[}yf#8@J  
} c<h!QnJ  
Gz[ym j)5  
改进后的归并排序: e=n{f*KG`  
F`BgKH!  
package org.rut.util.algorithm.support; )Rhff$  
\abAPo  
import org.rut.util.algorithm.SortUtil; o&XMgY~  
w^'?4M!  
/** _[{:!?-?  
* @author treeroot ,7fc41O3V  
* @since 2006-2-2 '=K of1  
* @version 1.0 C/CfjRzd  
*/ #?$'nya*u  
public class ImprovedMergeSort implements SortUtil.Sort { X# kjt )W  
I~]Q55  
private static final int THRESHOLD = 10; u_6BHsU  
Iz GB  
/* R<lNk<  
* (non-Javadoc) ]zvVY:v  
* Id.Z[owC`Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |:e|~sism  
*/ ^0s\/qyqm  
public void sort(int[] data) { J%\~<_2ny  
int[] temp=new int[data.length]; x'@32gv  
mergeSort(data,temp,0,data.length-1); Y0 X"Zw  
} >: W-C{%  
Vh#Mp!  
private void mergeSort(int[] data, int[] temp, int l, int r) { JwI`"$ > w  
int i, j, k; ;la#Vf:]  
int mid = (l + r) / 2; s7.p$r  
if (l == r) L'\/)!cEd  
return; 8R)D! 7[l  
if ((mid - l) >= THRESHOLD) 3m43nJ.~  
mergeSort(data, temp, l, mid); ,h@R' f !  
else mP)3cc5T  
insertSort(data, l, mid - l + 1); {KU.  
if ((r - mid) > THRESHOLD) r{q}f)  
mergeSort(data, temp, mid + 1, r); Q9yGQu  
else =~\]3g  
insertSort(data, mid + 1, r - mid); Xb<DpBrk  
I NPYJ#%  
for (i = l; i <= mid; i++) { ^)hAVf~E  
temp = data; 4j=<p@  
} V{T{0b" \U  
for (j = 1; j <= r - mid; j++) { h"PS-]:CD  
temp[r - j + 1] = data[j + mid]; S7UZGGjTk  
} ib(>vp$V  
int a = temp[l]; SvX=isu!.  
int b = temp[r]; U BhciZ  
for (i = l, j = r, k = l; k <= r; k++) { Y3P.|  
if (a < b) { ] ;pf  
data[k] = temp[i++]; Gq0]m  
a = temp; @@%i( >4Z  
} else { jNe(w<',P  
data[k] = temp[j--]; (@KoqwVWc  
b = temp[j]; |%'6f}fnE  
} "+n4c'  
} _}I(U?Q-C  
} H:q)^$s  
a@fE46o6<  
/** z29qARiX  
* @param data pK6e/eC  
* @param l mfeMmKFu\  
* @param i IP30y>\  
*/ S]e j=6SP  
private void insertSort(int[] data, int start, int len) { d)04;[=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fjIcB+Z  
} _e?q4>B)c  
} ]DC;+;8Jc  
} \);.0  
} VX^o"9Ntl  
4pmTicA~  
堆排序: jFuC=6aF  
AezvBY0'`z  
package org.rut.util.algorithm.support; ~|CJsD/  
F-BJe]  
import org.rut.util.algorithm.SortUtil; N+CXOI=6x  
NI5]Nz<?  
/** >H0) ph  
* @author treeroot }O,U2=Hw`]  
* @since 2006-2-2 xl+DRPzl  
* @version 1.0 zH)cU%I@.  
*/ 2PVx++*]C  
public class HeapSort implements SortUtil.Sort{ XYqpI/s  
XJx,9trH  
/* (non-Javadoc) $nB-ADRu@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !;o\5x<'$O  
*/ ]ZzoJ7lr  
public void sort(int[] data) { uQGz;F x  
MaxHeap h=new MaxHeap(); AVXX\n\_  
h.init(data); `y\*m]:  
for(int i=0;i h.remove(); ds*m6#1b  
System.arraycopy(h.queue,1,data,0,data.length); _\ .  
} <u/a`E?  
_4P;+Y  
private static class MaxHeap{ Q7,EY /  
xn(+G$m  
void init(int[] data){ b!i`o%Vb  
this.queue=new int[data.length+1]; e#>tM  
for(int i=0;i queue[++size]=data; T*h!d(  
fixUp(size); D 4< -8  
} ss? ]  
} m"lE&AM64p  
UF@IBb}0  
private int size=0; #*!+b  
(Ij0AeJ#  
private int[] queue; F,*2#:Ki  
 28nmQ  
public int get() { Ya}T2VX  
return queue[1]; 3g4e' ]t  
} `1nRcY  
9<xTu>7J  
public void remove() { BG'6;64kx6  
SortUtil.swap(queue,1,size--); Tr}R`6d$  
fixDown(1);  MKU7fFN.  
} u-m%=2  
file://fixdown Q`H# fS~  
private void fixDown(int k) { '5'3_vM  
int j; No:^hY:F8  
while ((j = k << 1) <= size) { >|wKXz  
if (j < size %26amp;%26amp; queue[j] j++; - #3{{  
if (queue[k]>queue[j]) file://不用交换 y L*LJ  
break; \r)%R5_CQ  
SortUtil.swap(queue,j,k); {IJ-4>  
k = j; C&=x3Cz  
} BjM+0[HC  
} }o-|8P:Y  
private void fixUp(int k) { `vudS?  
while (k > 1) { +'-rTi\  
int j = k >> 1; bfFmTI$,  
if (queue[j]>queue[k]) 31WZJm^  
break; $Axng J c  
SortUtil.swap(queue,j,k); <5dH *K  
k = j; KwS`3 6:  
} zQ,f5x  
} 2 =>*O  
e#tIk;9Xz  
} nz^nptw  
XJe/tR  
} X]qCS0GD'  
Z;hyi'rPJ  
SortUtil: Ig<}dM.Z[  
'<TD6jBs  
package org.rut.util.algorithm; 9oEpPL5  
|Eb&}m:E$  
import org.rut.util.algorithm.support.BubbleSort; xJ-*%'(KZ  
import org.rut.util.algorithm.support.HeapSort; UmJUt|  
import org.rut.util.algorithm.support.ImprovedMergeSort; Zp`~}LV{  
import org.rut.util.algorithm.support.ImprovedQuickSort; My. dD'C  
import org.rut.util.algorithm.support.InsertSort; ASR-a't6  
import org.rut.util.algorithm.support.MergeSort; wTT RoeJ}  
import org.rut.util.algorithm.support.QuickSort; 9hy'DcSy,  
import org.rut.util.algorithm.support.SelectionSort; XM$GQn]B  
import org.rut.util.algorithm.support.ShellSort; ;v_ls)_,-  
*/nuv k  
/** dgXg kB'  
* @author treeroot ] GNh)  
* @since 2006-2-2 I-,>DLG  
* @version 1.0 @d&g/ccMxd  
*/ 'GkvUrD9D$  
public class SortUtil { Yt{ji  
public final static int INSERT = 1; T)8p:}P!  
public final static int BUBBLE = 2; @: Z#E[N H  
public final static int SELECTION = 3; {(;B5rs  
public final static int SHELL = 4; a2o.a 2  
public final static int QUICK = 5; >rKhlUD  
public final static int IMPROVED_QUICK = 6; zhX;6= X2  
public final static int MERGE = 7; 7{-@}j`  
public final static int IMPROVED_MERGE = 8; W,Ty=:qm*  
public final static int HEAP = 9; %VWp&a8  
gt/!~f0r  
public static void sort(int[] data) { )!A 2>  
sort(data, IMPROVED_QUICK); NEMEY7De2  
} \7yJ\I  
private static String[] name={ #pX8{Tf[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v;Es^ YI  
}; WHP;Neb6  
RK-x?ZYH'  
private static Sort[] impl=new Sort[]{ p'}lN|"{O  
new InsertSort(), u#FXW_-TK  
new BubbleSort(), VgA48qZ  
new SelectionSort(), 0(8gQ 2n  
new ShellSort(), DcN"=Y  
new QuickSort(), 'j}g  
new ImprovedQuickSort(), ehE-SrkU'  
new MergeSort(), >60"p~t  
new ImprovedMergeSort(), ;}D-:J-z_  
new HeapSort() y:.?5KsPI  
}; !N1J@LT5h  
SiV*WxQe  
public static String toString(int algorithm){ VG)="g[%)  
return name[algorithm-1]; uJY.5w  
} S 6GMUaR  
Wab.|\c  
public static void sort(int[] data, int algorithm) { 8b7;\C~$p  
impl[algorithm-1].sort(data); eQ<xp A  
} OF8WDo`  
12lEs3  
public static interface Sort { 4:U0f;Fs  
public void sort(int[] data); dKm`14f]@G  
} Jn*Nao_)  
9:-T@u  
public static void swap(int[] data, int i, int j) { 0R|K0XH#$  
int temp = data; Z(HZB  
data = data[j]; kon5+g9q  
data[j] = temp; xQo~%wW,?  
} _IxamWpX$  
} tq&Yek>C  
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