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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。 CTX%~1 _`O  
插入排序: z7*mT}Q  
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package org.rut.util.algorithm.support; &v r0{]V^  
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import org.rut.util.algorithm.SortUtil; &#]||T-  
/** DsiyN:o'+  
* @author treeroot QVN @B[9  
* @since 2006-2-2 X=JAyxY  
* @version 1.0 \'nE{  
*/ D4+OWbf6  
public class InsertSort implements SortUtil.Sort{ g aXF3v*j  
`[f IK,  
/* (non-Javadoc) Tr HUM4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 16N`xw+{  
*/ 79M` ?xm  
public void sort(int[] data) { o6:p2W  
int temp; LS1}j WU!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !z?:Y#P3  
} LoS%  FI  
} &)Iue<&2  
} ,<CzS,(  
A Rjox`  
} NVo =5  
N5fMMi(O  
冒泡排序: RXbZaje$  
[i N}W5 m  
package org.rut.util.algorithm.support; Cx`?}A\%  
&eX^ll  
import org.rut.util.algorithm.SortUtil; }nNCgH  
r6`KZ TU  
/** ,tOc+3Qz$  
* @author treeroot ^(yU)k3pu  
* @since 2006-2-2 ()@+QE$  
* @version 1.0 zDA;FKZPp  
*/ qVJC O-K|  
public class BubbleSort implements SortUtil.Sort{ ^G(+sb[t  
2ISnWzq;  
/* (non-Javadoc) locf6%2g~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e%&/K7I"?  
*/ ?|we.{  
public void sort(int[] data) { @X0$X+]E*8  
int temp; H52] Zm  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,O"zz7  
if(data[j] SortUtil.swap(data,j,j-1); ;z^C\=om  
} 0SWec7G  
} nSV OS6  
} }o#6g|"\sY  
} / CVhvK  
Z6r_T  
} cH\.-5NQ  
|=4imM7  
选择排序: `Jon^&^;|  
2UjQ!g`  
package org.rut.util.algorithm.support; Z&0*\.6S~  
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import org.rut.util.algorithm.SortUtil; {3=]cLtt  
IH '&W  
/** '|l1-yD_  
* @author treeroot 4P}<86xk  
* @since 2006-2-2 @Vac!A??:  
* @version 1.0 skn];%[v\  
*/ 2=xjgK  
public class SelectionSort implements SortUtil.Sort { TW?A/GoXI  
Ny)!uqul*  
/* cYp]zn+6  
* (non-Javadoc) V@Fj!/  
* keWqL]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2p|[yZ  
*/ L+y90 T6?  
public void sort(int[] data) { C e1^S[  
int temp; -XtDGNH F  
for (int i = 0; i < data.length; i++) { ,XNz.+Ov  
int lowIndex = i; |cCrLa2*-  
for (int j = data.length - 1; j > i; j--) { ?Dk&5d^d  
if (data[j] < data[lowIndex]) { u >o2lvy8  
lowIndex = j; }*I:0"WH  
} 0 lsX~d'W  
} o72G oUfs  
SortUtil.swap(data,i,lowIndex); WfE,U=e*  
} I= 'S).  
} ril4*$e7^\  
zDO`w0N  
} StJ&YYdD  
YYUWBnf30G  
Shell排序: V8.o}BWY  
;y"q uJ'O  
package org.rut.util.algorithm.support; A296 f(  
?4,e?S6,[  
import org.rut.util.algorithm.SortUtil; ZkZTCb`/l  
!4B($]t  
/** !B &%!06  
* @author treeroot 0W I3m2i  
* @since 2006-2-2 RZV6\ j  
* @version 1.0 P Yp<eo\  
*/ TS{ycGY  
public class ShellSort implements SortUtil.Sort{ *CtO Q  
Wp<4F 6C$@  
/* (non-Javadoc) gIfl}Jat  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ki[Yu+';}  
*/ 9'|NF<  
public void sort(int[] data) { =N%;HfUD  
for(int i=data.length/2;i>2;i/=2){ 4<`'?  
for(int j=0;j insertSort(data,j,i); fQ[ GN}k  
}  0"_FQv  
} Spossp`|  
insertSort(data,0,1); Oy^)lF/  
} ,f;YJHEx8  
6Tn.56X  
/** xG^6'<  
* @param data 3;6Criq}  
* @param j 2#bpWk9  
* @param i z\fmwI  
*/ " E U[Lb  
private void insertSort(int[] data, int start, int inc) { 8f37o/L  
int temp; |lOH PA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \,i?WgWv  
} J`*!U4  
} b]X c5Dp{  
} ,dM}B-  
{ ke}W  
} mPy=,xYyC  
G92Ya^`  
快速排序: JC6Bs`=s~  
Q^qdm5}UkW  
package org.rut.util.algorithm.support; R7 )2@;i  
6ZCSCBW  
import org.rut.util.algorithm.SortUtil; P O,mg?JG(  
Bu\:+3)  
/** +&7D ;wj=  
* @author treeroot "r Bb2.  
* @since 2006-2-2 XUrxnJ4  
* @version 1.0 qMrBTq[  
*/ '7UW\KEB[}  
public class QuickSort implements SortUtil.Sort{ yrnIQu*Uu  
4#oLf1  
/* (non-Javadoc) ppjS|l*`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4]F:QS% x  
*/ #&A)%Qbg  
public void sort(int[] data) { %B&y^mZv*\  
quickSort(data,0,data.length-1); J1Ay^*qRU  
} ?n 9<PMo  
private void quickSort(int[] data,int i,int j){ yaiw|j`A  
int pivotIndex=(i+j)/2; j`GL#J[wqQ  
file://swap &"(xd@V)]A  
SortUtil.swap(data,pivotIndex,j); u!FX 0Ip  
2aef[TY  
int k=partition(data,i-1,j,data[j]); Z9MT, "  
SortUtil.swap(data,k,j); f,ajo   
if((k-i)>1) quickSort(data,i,k-1); l cHqg  
if((j-k)>1) quickSort(data,k+1,j); ^Gc#D:zU  
,,hW|CmN30  
} -hx' T6G%  
/** h7iI=[_V  
* @param data %. =B=*  
* @param i Gm 0&y  
* @param j M PhG:^g  
* @return ,U\F <$O  
*/ nwOT%@nw  
private int partition(int[] data, int l, int r,int pivot) { Lc<v4Bp  
do{ @pcmVsIp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |2#)lGA  
SortUtil.swap(data,l,r); qHT_,\l2  
} Q:6i 3 Nr/  
while(l SortUtil.swap(data,l,r); aXAV`%b  
return l; kf3 u',}R  
} 0=3Av8  
5E|y5|8fb  
} 2UPqn#.3  
6  XZF8W  
改进后的快速排序: nU{ }R"|  
`*5_`^t   
package org.rut.util.algorithm.support; /0PBY-O  
.d) X.cO  
import org.rut.util.algorithm.SortUtil; RqV* O}Am  
9ZbT41  
/** [YbnpI  
* @author treeroot |~'PEY  
* @since 2006-2-2 R/&Ev$:  
* @version 1.0 ]!JUiFj"uD  
*/ K"%_q$[YQ  
public class ImprovedQuickSort implements SortUtil.Sort { 'P1I-ue  
yMdE[/+3  
private static int MAX_STACK_SIZE=4096; h[|c?\E z  
private static int THRESHOLD=10; q2o`.f+I  
/* (non-Javadoc) i(hI\hD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IQ$cLr-S  
*/ 8T&.8r  
public void sort(int[] data) { [8F1rZ&  
int[] stack=new int[MAX_STACK_SIZE]; D"x;/I  
f@3?kM(  
int top=-1; )5NfOvmNB  
int pivot; EDMuQu/D8  
int pivotIndex,l,r; O#j&8hQ>  
CK<Wba  
stack[++top]=0; :qfP>Ok  
stack[++top]=data.length-1; Y[=X b  
`QpkD8  
while(top>0){ pX5#!)  
int j=stack[top--]; %XX(x'^4  
int i=stack[top--]; ~N<zv( {lG  
5cr d.1@^  
pivotIndex=(i+j)/2; 0X.(BRI~6p  
pivot=data[pivotIndex]; e XB'>#&s  
LHQ$0LVt>T  
SortUtil.swap(data,pivotIndex,j); !'y9/  
2pKkg>/S  
file://partition :gD=F&V  
l=i-1; rb"J{^  
r=j; "iu9r%l94  
do{ it Byw1/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); us/}_r74N*  
SortUtil.swap(data,l,r); ULqFJ*nla  
} Oz3JMZe  
while(l SortUtil.swap(data,l,r); U`G  
SortUtil.swap(data,l,j); %\i OX|F_  
fVb~j;  
if((l-i)>THRESHOLD){ >iZ"#1ZL2O  
stack[++top]=i; FTVV+9.l:  
stack[++top]=l-1; 0Nvk|uI V[  
} Bri yy  
if((j-l)>THRESHOLD){ Owe"x2D\  
stack[++top]=l+1; /2%646  
stack[++top]=j; })v`` +  
} )=~OP>7B  
NNOemTh  
} rKhhx   
file://new InsertSort().sort(data); Y@jO#6R  
insertSort(data); v[++"=< o8  
} XfYMv38(  
/** (qG}`?219J  
* @param data n(#|  
*/ M<nKk#!+h  
private void insertSort(int[] data) { ';>]7oT`  
int temp; $N;Nvp2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <$ "   
} U ]o  
} 9oe=*#Ig1m  
} No|T#=BZ[  
wFe?0u  
} @%aU)YDwi  
Q%_QT0H9Kz  
归并排序: ^x BQ#p  
#N?VbDK9_  
package org.rut.util.algorithm.support; ;hz;|\ko5  
^k* h  
import org.rut.util.algorithm.SortUtil; \LN!k-c  
PVCFh$pnw  
/** q(Q$lRj/I-  
* @author treeroot ?RP&XrD  
* @since 2006-2-2 iE6?Px9]  
* @version 1.0 uZ1b_e0SGu  
*/ |c<h& p  
public class MergeSort implements SortUtil.Sort{ bR\Oyd~e  
j aU.hASj  
/* (non-Javadoc) Y8%bk2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o_i N(K  
*/ r5> 1n/+6  
public void sort(int[] data) { fTq/9=Rq4  
int[] temp=new int[data.length]; EE{]EW(  
mergeSort(data,temp,0,data.length-1); *F^t)K2  
} /h(bMbZ  
NFs Cq_f  
private void mergeSort(int[] data,int[] temp,int l,int r){ DN$[rCi7  
int mid=(l+r)/2; 6rP?$mn2  
if(l==r) return ; prk@uYCa =  
mergeSort(data,temp,l,mid); Wx:He8N] H  
mergeSort(data,temp,mid+1,r); d-rqZn}  
for(int i=l;i<=r;i++){ M^89]woC  
temp=data; M:5K4$>Kx  
} }zO>y%eI  
int i1=l; #CV;Np  
int i2=mid+1; \aY<| 7zK  
for(int cur=l;cur<=r;cur++){ }wIF$v?M  
if(i1==mid+1) d,5,OJY2f  
data[cur]=temp[i2++]; ]B2%\}c  
else if(i2>r) _spW~"|G  
data[cur]=temp[i1++]; ,pTj'I  
else if(temp[i1] data[cur]=temp[i1++]; )8Q;u8jm1  
else j*6>{_[  
data[cur]=temp[i2++]; wni^qs.i@3  
} +lhjz*0  
} ZL7#44  
!*\ J4bJe  
} >d9b"T  
)wM881_!  
改进后的归并排序: Q2)CbHSz  
aA6m5  
package org.rut.util.algorithm.support; 75"&"*R/*G  
>53Hqzm&  
import org.rut.util.algorithm.SortUtil; ;"9$LHH*  
nu6p{_M  
/** B<Zm'hdX  
* @author treeroot 2{6%+>jB  
* @since 2006-2-2 B>kVJK`X  
* @version 1.0 !r#36kO  
*/ f;`7}7C  
public class ImprovedMergeSort implements SortUtil.Sort { 2Kmnt(>  
riu_^!"Z_  
private static final int THRESHOLD = 10; ~p!=w#/  
N f^6t1se  
/* 1)BIh~1{p  
* (non-Javadoc) N|3a(mtiZ'  
* DUMC4+i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W}iDT?Qi  
*/ ul&}'jBr  
public void sort(int[] data) { \gW6E^  
int[] temp=new int[data.length]; #trb4c{{5  
mergeSort(data,temp,0,data.length-1); ;uhpo  
} `gSJEq  
.5E6 MF  
private void mergeSort(int[] data, int[] temp, int l, int r) { +v)+ k  
int i, j, k; "<$JU@P  
int mid = (l + r) / 2; aInh?-  
if (l == r) \uyZl2=WWa  
return; *K'#$`2  
if ((mid - l) >= THRESHOLD) +=Y$v2BZA3  
mergeSort(data, temp, l, mid); X EL~y  
else 0 /)OAw"m  
insertSort(data, l, mid - l + 1); i4dy0jfN  
if ((r - mid) > THRESHOLD) [KW9J}]  
mergeSort(data, temp, mid + 1, r); nkO4~p  
else #GfM!<q<  
insertSort(data, mid + 1, r - mid); iGw\A!}w\  
,opS)C$  
for (i = l; i <= mid; i++) { rNl%I@G  
temp = data; ]^6r7nfR6|  
} %%{f-\-7Ig  
for (j = 1; j <= r - mid; j++) { A5IW[Gu!  
temp[r - j + 1] = data[j + mid]; h @2.D|c)g  
} FwpTQix!  
int a = temp[l]; y6P-:f/&*  
int b = temp[r]; l H{~?x  
for (i = l, j = r, k = l; k <= r; k++) { bNG7A[|B  
if (a < b) { J] )gXVRM  
data[k] = temp[i++]; 9!,f4&G`  
a = temp; p1']+4r%  
} else { N+zR7`AG8  
data[k] = temp[j--]; ``,q[|  
b = temp[j]; e% #?B *  
} ?2<V./2F  
} /y3Lc.-  
} }PX8#C_P  
zxrbEE Q  
/** 4vMjVbr  
* @param data /_V4gwb}|-  
* @param l Is(ZVI  
* @param i  'EO"0,  
*/ 2&0#'Tb  
private void insertSort(int[] data, int start, int len) {  +wE>h>?;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l:14uWu|  
} eEX*\1Gg  
} D"<>! ]@(a  
} *@fVogr^  
} Q[&CtM  
X8 A$&  
堆排序: +<^c2diX  
ZJOO*S  
package org.rut.util.algorithm.support; )P#xny2  
xsRu~'f  
import org.rut.util.algorithm.SortUtil; uC5W1LyI  
|6w {%xC?"  
/** bI:cYn1  
* @author treeroot ,h },jkY4  
* @since 2006-2-2 \os"j  
* @version 1.0 **~1`_7~*  
*/ P] Xl  
public class HeapSort implements SortUtil.Sort{ e[g.&*!  
7xfN}iHG  
/* (non-Javadoc) D%h_V>#z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !U~S7h}  
*/ ADT8A."R[  
public void sort(int[] data) { #RWmP$+#=  
MaxHeap h=new MaxHeap(); Jzj>=jWX@  
h.init(data); c{\x< AwO  
for(int i=0;i h.remove(); $sb `BS  
System.arraycopy(h.queue,1,data,0,data.length); 6G;t:[H G  
} ]Vd1fkXO0  
8M6Qn7{L  
private static class MaxHeap{ N3&n"w _d  
,H5o/qNU`{  
void init(int[] data){ 9@8)ZHf  
this.queue=new int[data.length+1]; QV_Ep8  
for(int i=0;i queue[++size]=data; _MzdbUb5,  
fixUp(size); gjPbhY=C[  
} g acE?bW'  
} AxiCpAS;J  
^03M~ SNCj  
private int size=0; RO8]R2A  
;s w3MRJ  
private int[] queue; 7s2e> 6Q[  
ZnRE:=  
public int get() { ke5_lr(  
return queue[1]; WbHI>tt  
} zF_aJ+i:~  
2-DJ3OL]k  
public void remove() { %s#`Z [8,  
SortUtil.swap(queue,1,size--); "/zDcZbL;  
fixDown(1); Kc {~Q  
} 4 moVS1  
file://fixdown Wf9K+my  
private void fixDown(int k) { FS6I?q#tQ  
int j; |&\cr\T\r  
while ((j = k << 1) <= size) { l1D"*J 2`  
if (j < size %26amp;%26amp; queue[j] j++; DTM xfQdk  
if (queue[k]>queue[j]) file://不用交换 h 7*#;j  
break; F1b~S;lm  
SortUtil.swap(queue,j,k); !K/zFYl  
k = j; z1~FE  
}  F!&_  
} m^Rf6O^  
private void fixUp(int k) { k4BiH5\hA  
while (k > 1) { Kv#TJn  
int j = k >> 1; =d1R9O  
if (queue[j]>queue[k]) ~w}Zv0  
break; 42 &m)  
SortUtil.swap(queue,j,k); L`0}wR?+  
k = j; Z=y^9]  
} \ Q0-yNt  
} a+p_47 xa  
:~B'6b  
} \t+q1S1  
|p @,]c z  
} =y1/V'2E  
GoRSLbCUR  
SortUtil: P:tl)ob  
a3(q;^v  
package org.rut.util.algorithm; H_+!.  
6ZwFU5)QE/  
import org.rut.util.algorithm.support.BubbleSort; ${w\^6&  
import org.rut.util.algorithm.support.HeapSort; m/>z}d05h  
import org.rut.util.algorithm.support.ImprovedMergeSort; q NE( @at  
import org.rut.util.algorithm.support.ImprovedQuickSort; * 57y.](w  
import org.rut.util.algorithm.support.InsertSort; x2 m A  
import org.rut.util.algorithm.support.MergeSort; H2D j`0  
import org.rut.util.algorithm.support.QuickSort; 9lCZ i?  
import org.rut.util.algorithm.support.SelectionSort; 1F58 2 l  
import org.rut.util.algorithm.support.ShellSort; +]NPxUa  
T0Zv.  
/** :Y>M/ /0  
* @author treeroot f/K:~#k  
* @since 2006-2-2 Tq=OYJq5U  
* @version 1.0 !mtX*;b(e  
*/ ^q ?xi5 w  
public class SortUtil { }!0nb)kL  
public final static int INSERT = 1; mtu`m6Xix  
public final static int BUBBLE = 2; T<=]Vg)^r"  
public final static int SELECTION = 3; b|z_1j6U  
public final static int SHELL = 4; 7SpF&  
public final static int QUICK = 5; +x"cWOg  
public final static int IMPROVED_QUICK = 6; (>gAnebN L  
public final static int MERGE = 7; YQk<1./}I  
public final static int IMPROVED_MERGE = 8; f MDM\&f  
public final static int HEAP = 9; :D!}jN/)  
6Jf\}^4@k  
public static void sort(int[] data) { d %Z+.O  
sort(data, IMPROVED_QUICK); m?=9j~F *  
} }v?_.MtS  
private static String[] name={ +r 2\v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fooQqWC)  
}; " O,TL *$  
T2V# fYCc  
private static Sort[] impl=new Sort[]{ PgYq=|]`  
new InsertSort(), ;'x\L<b/)  
new BubbleSort(), 4 9zOhG |  
new SelectionSort(), gAWrn^2L5  
new ShellSort(), U~e^  
new QuickSort(), E5}wR(i,4  
new ImprovedQuickSort(), 7>Oa, \  
new MergeSort(), ,wvzY7%  
new ImprovedMergeSort(), ,`lVB#|  
new HeapSort() ? m$7)@p  
}; l*Iy:j(B  
M!ra3Y  
public static String toString(int algorithm){ ix=H=U]Q{  
return name[algorithm-1]; (YJ]}J^  
} P_f>a?OL:  
5wws8w  
public static void sort(int[] data, int algorithm) { ;f8$vW ];  
impl[algorithm-1].sort(data); Rr'^l ]  
} /:j9 #kj  
"?~u*5  
public static interface Sort { -bHfo%"^TT  
public void sort(int[] data); %)K)h&m  
} 3g#fX{e_5!  
D|1pBn.b]'  
public static void swap(int[] data, int i, int j) { Q*+_%n1 /  
int temp = data; 8VwByk8  
data = data[j]; `Oc`I9  
data[j] = temp; A%G \ AT  
} 'h6Vj6  
} Gv};mkX[N  
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3+5=?,请输入中文答案:八 正确答案:八