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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。 V.|#2gC]t  
插入排序: ;"w?@ELE  
jxqKPMf>@%  
package org.rut.util.algorithm.support; x%RG>),U  
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import org.rut.util.algorithm.SortUtil; d}^G790  
/** W|CZA  
* @author treeroot W,f XHYst  
* @since 2006-2-2 ?aWMU?S  
* @version 1.0 @8eQ|.q]Q  
*/ *?3c2Jg=E  
public class InsertSort implements SortUtil.Sort{ Ku`u%5<  
5j~1%~,#  
/* (non-Javadoc) ,X}Jpi;/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAKm]?zB>  
*/ Bdr'd? u<A  
public void sort(int[] data) { &w%--!T  
int temp; 0Zh]n;S3m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~ UNK[  
} `e4gneQY  
} sd&^lpH  
} $5\+Q W  
b6UpE`\z  
} :r4o:@N'  
8/s?Gz  
冒泡排序: 9>k_z&<  
XiO~^=J  
package org.rut.util.algorithm.support; 7m4*dBTr  
} /*U~!t  
import org.rut.util.algorithm.SortUtil; 3 =-V!E  
r (KAG"5  
/** L%HFsuIO-  
* @author treeroot @p<tJR"M  
* @since 2006-2-2 ]sZ! -q'8  
* @version 1.0 Om_- #S  
*/ ; <l#k7/  
public class BubbleSort implements SortUtil.Sort{ > JV$EY,  
fM`.v+  
/* (non-Javadoc)  P0 9f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2rxz<ck(  
*/  &4{!5r  
public void sort(int[] data) { G| b I$   
int temp; Sjp ]TWj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \b*z<Odv  
if(data[j] SortUtil.swap(data,j,j-1); "A]#KTP  
} M(?0c}z  
} s63!]LDr  
} [H@71+_Q  
} ~L4L|q 7  
d_ 7hh  
} IictX"3lh  
\}71p zw(  
选择排序: 3X%h?DC  
E NrcIZ  
package org.rut.util.algorithm.support; <q&4Y+b  
8d7 NESYl  
import org.rut.util.algorithm.SortUtil; Y_<-.?jf  
..7 "<"uH  
/** ^^B~v<uK  
* @author treeroot ly#jl5wmT  
* @since 2006-2-2 I-^C6~  
* @version 1.0 yoH,4,!G  
*/ MML=J~1  
public class SelectionSort implements SortUtil.Sort { .(99f#2M:  
Wv||9[Rd  
/*  &2bqL!k  
* (non-Javadoc) r+k g$+%b  
* [\qclW;L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) saTS8p z  
*/ ^yX>^1  
public void sort(int[] data) { c~+KrWbZ~  
int temp; )=VAEQhL-  
for (int i = 0; i < data.length; i++) { L'w]O -86  
int lowIndex = i; 2ZEDyQM  
for (int j = data.length - 1; j > i; j--) { bXSAZW f  
if (data[j] < data[lowIndex]) { [1nUq!uTm  
lowIndex = j; Mc&Fj1h5  
} {y'4&vt<~  
} ey6ujV7!  
SortUtil.swap(data,i,lowIndex); [RF6mWQ  
} ~jzjJ&O&  
} OT0IGsJ"'  
4]#$YehM5  
} 7,zE?KG /  
G6dUm_iB  
Shell排序: 5^K\<+{~B  
cn Oh j  
package org.rut.util.algorithm.support; A*g-pJ h  
 OA^6l#  
import org.rut.util.algorithm.SortUtil; Y?$  
*M/ :W =,t  
/** &?$mS'P  
* @author treeroot )<lQJ#L86a  
* @since 2006-2-2 bct8~dY  
* @version 1.0 ,m8mh)K?0>  
*/ p-r[M5;-^Q  
public class ShellSort implements SortUtil.Sort{ MdN0 Y@Ll  
THARr#1b};  
/* (non-Javadoc) O?O=]s u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m VFo2^%v  
*/ BOWBD@y  
public void sort(int[] data) { u 7:Iv  
for(int i=data.length/2;i>2;i/=2){ A"z9t#dv@  
for(int j=0;j insertSort(data,j,i); *E]:VZl  
} +D2I~hC0'  
} W>5[_d  
insertSort(data,0,1); _M+7)[xj=  
} s94 *uZ(C/  
0*_E'0L8e  
/** ,OERDWW|6  
* @param data {A'*3(8  
* @param j "8"aYD_  
* @param i AvPPsN0  
*/ OJd/#KFm  
private void insertSort(int[] data, int start, int inc) { U(LLIyZv  
int temp; }V[ORGzox  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); l6 L?jiTl_  
} Z&79: 9=#>  
} h-kmZ<p|^  
} \2]_NU5.  
\Hdsy="Dnh  
} t cO{CI  
xP,b/T #a  
快速排序: ]T'7+5w  
T2 S fBs  
package org.rut.util.algorithm.support; VFzIBgJ3  
p!5'#\^f  
import org.rut.util.algorithm.SortUtil; [(gXjt-  
U E$Ix  
/** XMiu}w!  
* @author treeroot $rlrR'[H  
* @since 2006-2-2 y/5GY,z%aL  
* @version 1.0 rOz1tY)l0d  
*/ 4v`IAR?&K;  
public class QuickSort implements SortUtil.Sort{ lj UdsUw  
l&}}Io$?@  
/* (non-Javadoc) u`&lTJgF/O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RWGf]V]6  
*/ TDUY&1[  
public void sort(int[] data) { PfZS"yk  
quickSort(data,0,data.length-1); b\"w/'XX  
} !LzA  
private void quickSort(int[] data,int i,int j){ !sSq4K  
int pivotIndex=(i+j)/2; o+B)  
file://swap @Ns[qn;9  
SortUtil.swap(data,pivotIndex,j); kY @(-  
L7d1)mV  
int k=partition(data,i-1,j,data[j]); 0{g*\W*+~  
SortUtil.swap(data,k,j); X6",Xr! {  
if((k-i)>1) quickSort(data,i,k-1); 1`YU9?  
if((j-k)>1) quickSort(data,k+1,j); 5 mC"8N1)  
DzQ  
} l#`G4Vf  
/** &w#!   
* @param data j:xC \b47"  
* @param i  ?C#E_  
* @param j ~MBPN 4r  
* @return #c5jCy}n  
*/ N+h05`  
private int partition(int[] data, int l, int r,int pivot) { Pc_aEBq  
do{ D}q"^"#T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }f]Y^>-Ux  
SortUtil.swap(data,l,r); _'LZf=V0  
} 5nUJ9sqA  
while(l SortUtil.swap(data,l,r); /("7*W2  
return l; BHf$ %?3z,  
} d&[RfZ`  
]%)<9 ]}  
} ,wwO0,"y7  
kQ lU.J>^  
改进后的快速排序: dH!z<~  
An$2='=/  
package org.rut.util.algorithm.support; Jjm#ofv  
s4~[GO6>  
import org.rut.util.algorithm.SortUtil; }!AS?  
5,pNqXRp  
/** l6y}>]  
* @author treeroot W3:Fw6v  
* @since 2006-2-2 nuXL{tg6  
* @version 1.0 =o~GLbsER  
*/ sVK?sBs]  
public class ImprovedQuickSort implements SortUtil.Sort { o`,~#P|  
IQRuqp KL  
private static int MAX_STACK_SIZE=4096; v6s,lC5qR  
private static int THRESHOLD=10; B*,)@h  
/* (non-Javadoc) lI 4tW=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2S{P(B   
*/ K5jt(7i  
public void sort(int[] data) { NS~;{d \  
int[] stack=new int[MAX_STACK_SIZE]; DK\XC%~m  
Ic9L@2m  
int top=-1; ,-4NSli  
int pivot; F5Z,Jmi^M  
int pivotIndex,l,r; H*'1bLzq  
iCE!TmDT  
stack[++top]=0; >%k6k1CZ  
stack[++top]=data.length-1;  k~ ^4  
MQQm3VaKS  
while(top>0){ ]x r0]  
int j=stack[top--]; W&IG,7tr  
int i=stack[top--]; W n'a'  
{aUnOyX_  
pivotIndex=(i+j)/2; [mA-sl]  
pivot=data[pivotIndex]; A^>@6d $2  
qcS.=Cj?)  
SortUtil.swap(data,pivotIndex,j); N)H "'#-  
Zd6ik&S   
file://partition P[ 2!D)A  
l=i-1; T&?g)  
r=j; -GA F>  
do{ c]PTU2BB8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lPZ(c%P  
SortUtil.swap(data,l,r); @kWL "yy,  
} +e-F`k  
while(l SortUtil.swap(data,l,r); }l|S]m!  
SortUtil.swap(data,l,j); 6O As%QZ  
#$I@V4O;#  
if((l-i)>THRESHOLD){ D\AVZ76F1  
stack[++top]=i; "XR=P> xk  
stack[++top]=l-1; wlT8|  
} STp9Gh-  
if((j-l)>THRESHOLD){ L~Gr,i  
stack[++top]=l+1; vR!+ 8sy$  
stack[++top]=j; QQM:[1;RT  
} m&:&z7^p  
zj1~[$  (  
} {> YsrD C  
file://new InsertSort().sort(data); tWIs |n  
insertSort(data); 9 {&g.+  
} 0O9b 7F  
/** C#kE{Qw10r  
* @param data \8`7E1d  
*/ >>y`ap2%V  
private void insertSort(int[] data) { i6WH^IQM  
int temp; n m-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j uA@"SG  
} wq$$. .E  
} tk&AZb,sP  
} \Ii{sn9  
_MBhwNBxZ  
} {p +&Q|  
>}+{;d  
归并排序: xB *b7-a  
`tkoS  
package org.rut.util.algorithm.support; fp)SZu_*  
 g2vm]j  
import org.rut.util.algorithm.SortUtil;  U?*zb  
x]{P.7IO'  
/** S,c{LTL  
* @author treeroot 'D+xs}\  
* @since 2006-2-2 L  ;L:  
* @version 1.0 c/|{yp$Ga>  
*/ !l (Vk  
public class MergeSort implements SortUtil.Sort{ T$5wH )<  
L4>14D\  
/* (non-Javadoc) 2~kx3` Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^kKLi  
*/ )9YDNVo*-  
public void sort(int[] data) { FDMQ Lxf  
int[] temp=new int[data.length]; jHFjd'  
mergeSort(data,temp,0,data.length-1); 0D(8-H  
} Lce,]z\ _  
 g\q .  
private void mergeSort(int[] data,int[] temp,int l,int r){ AYAU  
int mid=(l+r)/2; \@gV$+{9  
if(l==r) return ; .xT?%xSi/  
mergeSort(data,temp,l,mid); T}&A-V$  
mergeSort(data,temp,mid+1,r); ?Mjs[|  
for(int i=l;i<=r;i++){ /5NWV#-  
temp=data; 'Z{`P0/^o`  
} Jt_=aMY:7  
int i1=l; *k{Llq  
int i2=mid+1; b)diYsTH  
for(int cur=l;cur<=r;cur++){ Kxsd@^E  
if(i1==mid+1) MntmBj-T  
data[cur]=temp[i2++]; aTvyz r1  
else if(i2>r) C'JI%HnQ  
data[cur]=temp[i1++]; TO6F  
else if(temp[i1] data[cur]=temp[i1++]; =XfvPBA  
else o?baiOkH  
data[cur]=temp[i2++]; \.i7( J]  
} '12m4quO  
} Hn/t'D3  
y\FQt];z)  
} #{6VdWZ  
T|~5dZL  
改进后的归并排序: ~c EN=(Z~r  
3H#,qug$  
package org.rut.util.algorithm.support; S5).\1m h[  
YWIA(p8Qkk  
import org.rut.util.algorithm.SortUtil; G*=HjLmZg  
!VD$uT  
/** (HAdr5  
* @author treeroot 6tH}&#K  
* @since 2006-2-2 x6/u+Urn  
* @version 1.0 x1@,k=qrd  
*/ IVxJN(N^  
public class ImprovedMergeSort implements SortUtil.Sort { OLG)D#m(4/  
 ,$6si  
private static final int THRESHOLD = 10; 1I2n dt  
+L09^I  
/* Ftyxz&-4$p  
* (non-Javadoc) ie1~QQ  
* %DttkrhL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !zK"y[V  
*/ E2zL-ft.  
public void sort(int[] data) { > )4~,-;k  
int[] temp=new int[data.length]; ( #dR\Di  
mergeSort(data,temp,0,data.length-1); jZ~girA  
} o6u^hG6~'  
c44s @ E  
private void mergeSort(int[] data, int[] temp, int l, int r) { #66i!}  
int i, j, k; YIN* '!N  
int mid = (l + r) / 2; `Am|9LOT  
if (l == r) y>C !cYB  
return; "smU5 s,P  
if ((mid - l) >= THRESHOLD) L 0Ckw},,  
mergeSort(data, temp, l, mid); \4 b^*`d  
else 9"[,9HN  
insertSort(data, l, mid - l + 1); %g?M?D8Ud3  
if ((r - mid) > THRESHOLD) v} !lx)#  
mergeSort(data, temp, mid + 1, r); %RW*gUvc]  
else Ja1`S+  
insertSort(data, mid + 1, r - mid); `@y~JNf!  
TFHYB9vV  
for (i = l; i <= mid; i++) { @kSfF[4H  
temp = data; .nY}_&  
} Q%6zr9  
for (j = 1; j <= r - mid; j++) { D&fOZVuqZ  
temp[r - j + 1] = data[j + mid]; >FeCa h Fn  
} 56Lxr{+X  
int a = temp[l]; !~zn*Hm  
int b = temp[r]; "C}<umJ'  
for (i = l, j = r, k = l; k <= r; k++) { 92j[b_P  
if (a < b) { (%6fZ  
data[k] = temp[i++]; O}C*weU  
a = temp; 6EY\  
} else { tO&n$$  
data[k] = temp[j--]; "y8W5R5kL4  
b = temp[j]; TTO8tT3[6}  
} -[*y{K@dh  
} %Ja0:e  
} &t UX(  
:H>I`)bw  
/** I*3 >>VN  
* @param data [#!Y7Ede  
* @param l q>+!Ete1p  
* @param i NP3 e^  
*/ HMD\)vMK6  
private void insertSort(int[] data, int start, int len) { E!X>C^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yFm88  
} )W_akUL  
} ;QVTb3Th  
} |QZ E  
} *QN,w BQ  
0`pCgF  
堆排序: <XrXs  
?yG[VW  
package org.rut.util.algorithm.support; "Pc}-&  
JV,h1/a("  
import org.rut.util.algorithm.SortUtil; |a) zuC  
# a4OtRiI  
/** F(j;|okf;  
* @author treeroot R o{xprE1  
* @since 2006-2-2 BJ_"FG  
* @version 1.0 jcC"vr'u|  
*/ )M8,Tv*~  
public class HeapSort implements SortUtil.Sort{  zv"NbN  
id,' +<  
/* (non-Javadoc) Xtz29  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mCn:{G8+  
*/ .Tl,Ek(  
public void sort(int[] data) { ;eo}/-a_Xw  
MaxHeap h=new MaxHeap(); ^$`mS&3/q  
h.init(data); ;[4=?GL*  
for(int i=0;i h.remove(); Fsl="RB7f  
System.arraycopy(h.queue,1,data,0,data.length); O=LW[h!  
} \R9izuc9  
[zl4"|_`  
private static class MaxHeap{ 'Jek< 5  
!5'4FUlJ  
void init(int[] data){ e)s l  
this.queue=new int[data.length+1]; WNeBthq6  
for(int i=0;i queue[++size]=data; "([gN:   
fixUp(size); e1b?TF@lz  
} Q e/XEW  
} +P 9eE,WR  
r(>812^\  
private int size=0; xxg/vaQt=s  
!Mgo~h"]#  
private int[] queue; EXbZ9 o*  
Txl|F\nK`  
public int get() { ;Y8>?  
return queue[1]; #I MaN%  
} v2r|) c,h  
wQ/.3V[  
public void remove() { h=6D=6c  
SortUtil.swap(queue,1,size--); c om4@NK  
fixDown(1); s;l"'6:_  
} & E6V'*<93  
file://fixdown mcidA%  
private void fixDown(int k) { o&M.9V?~~  
int j; uF[*@N  
while ((j = k << 1) <= size) { Xe:rPxZf~  
if (j < size %26amp;%26amp; queue[j] j++; V$FZVG/@#  
if (queue[k]>queue[j]) file://不用交换 NB44GP1-@  
break; +BO kHXk1  
SortUtil.swap(queue,j,k); -awG1 4%  
k = j; Kwm_Y5`A  
} X. Ur`X  
} LN.*gG l  
private void fixUp(int k) { \N-3JOVy  
while (k > 1) { F+NX [  
int j = k >> 1; U8gj\G\`  
if (queue[j]>queue[k]) 3mopTzs)  
break; R'vNJDFY  
SortUtil.swap(queue,j,k); 3(t3r::&  
k = j; J"S(GL  
} wKpb%3  
} KiFTj$w,  
)/[L)-~y~  
} XM"Qs.E  
G=gU|& (  
} }/\`'LQ  
x)Zm5&"Gg  
SortUtil: p{v*/<.;  
Zl'/Mx g  
package org.rut.util.algorithm; h-O;5.m-P  
@vib54G  
import org.rut.util.algorithm.support.BubbleSort; ?7lW@U0  
import org.rut.util.algorithm.support.HeapSort; oa=TlBk<  
import org.rut.util.algorithm.support.ImprovedMergeSort; *_J{_7pwe  
import org.rut.util.algorithm.support.ImprovedQuickSort; _<F;&(o  
import org.rut.util.algorithm.support.InsertSort; N^wHO<IO 1  
import org.rut.util.algorithm.support.MergeSort; =j~:u.hc'  
import org.rut.util.algorithm.support.QuickSort; o%`=+- K  
import org.rut.util.algorithm.support.SelectionSort; 'Q 7^bF^  
import org.rut.util.algorithm.support.ShellSort; N(yd<M w  
vf#d  
/** \et2aX !  
* @author treeroot /:{4,aX2  
* @since 2006-2-2 RL\?i~'KH  
* @version 1.0 <}'=@a  
*/ G,B4=[Y  
public class SortUtil { ;!=i|"P G  
public final static int INSERT = 1; X@:Y./  
public final static int BUBBLE = 2; ?*xH HI/  
public final static int SELECTION = 3; ~:0w%  
public final static int SHELL = 4; oP4+:r)LKD  
public final static int QUICK = 5; <s\ZqL$ f  
public final static int IMPROVED_QUICK = 6; h6IXD N  
public final static int MERGE = 7; fE)o-q6Z  
public final static int IMPROVED_MERGE = 8; 6ce-92n  
public final static int HEAP = 9; 3O Ks?i3A  
]jiVe_ OS<  
public static void sort(int[] data) { Zo^]y'  
sort(data, IMPROVED_QUICK); '/X]96Ci7  
}   !\BM  
private static String[] name={ v.4G>00^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n53c} ^  
}; 3HuGb^SNg  
6r D]6#D  
private static Sort[] impl=new Sort[]{ E8R;S}P A  
new InsertSort(), S-3hLw&?  
new BubbleSort(), RjgJIVm(  
new SelectionSort(), ":s_ O.  
new ShellSort(), WcM\4q@  
new QuickSort(), > KdV]!H  
new ImprovedQuickSort(), );q~TZ[Do  
new MergeSort(), #pK" ^O*!  
new ImprovedMergeSort(), S-Bx`e9'  
new HeapSort() i'>5vU0?3  
}; |#SZd Xg  
v@M^ukk'}  
public static String toString(int algorithm){ /K1cP>oE  
return name[algorithm-1]; h7T),UL  
} `F&~SU,  
u,d5/`E  
public static void sort(int[] data, int algorithm) { )u=W?5%=}  
impl[algorithm-1].sort(data); y5O &9Ckw  
} 79d(UG'O  
XpE847!soL  
public static interface Sort { Suo$wZ7J  
public void sort(int[] data); }P{Wk7#Jq  
} <Q- m &  
;y1/b(t  
public static void swap(int[] data, int i, int j) { yf8kBT:&S  
int temp = data; \weg%a  
data = data[j]; tk=S4 /VWv  
data[j] = temp; YOrq)_ l  
} 7:b.c  
} eMFxdtH  
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