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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。 Y|L57F  
插入排序: ~cz t=  
f~Su F,o@h  
package org.rut.util.algorithm.support; Gu pKM%kM  
M vCBgLN  
import org.rut.util.algorithm.SortUtil; -p }]r  
/** _rv_-n]"o  
* @author treeroot ,&$Y2+  
* @since 2006-2-2 /(w5S',EL  
* @version 1.0 e0P1FD<@  
*/ 0NGokaD)H  
public class InsertSort implements SortUtil.Sort{ C/JFg-r  
ZJqmD  
/* (non-Javadoc) IM+PjYJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R!=XMV3$PH  
*/ >8##~ZuF+  
public void sort(int[] data) { %k~=iDk@  
int temp; iDA`pemmi&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \[BnAgsF  
} ?w+T_EH  
} Hs9uDGWp  
} RB!g,u  
sQkP@Y  
} !Kis,e  
DbDpdC;  
冒泡排序: S/4k fsN  
!PgYn  
package org.rut.util.algorithm.support; oUqNA|l T  
k`d  
import org.rut.util.algorithm.SortUtil; Wd7*sa3T  
udB}`<Q  
/** VC@o]t5  
* @author treeroot eP)RP6ON{  
* @since 2006-2-2 "](~VF[J8  
* @version 1.0 XxGm,A+>Ty  
*/ g!8-yri  
public class BubbleSort implements SortUtil.Sort{ ;O CYx[|  
'oTF$3n  
/* (non-Javadoc) 1DX=\BWp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `c icjA@~  
*/ b#b#r  
public void sort(int[] data) { b% F|V G  
int temp; 5 Z@Q ^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !@Ox%vK  
if(data[j] SortUtil.swap(data,j,j-1); tNjrd}8s  
} "}n]0 >J  
} f-Sb:O!V  
} <rU(zm  
} bV"0}|A~K  
\ZC7vM"h  
} ;y"DEFs,u  
)3;S;b  
选择排序: "m!Cl-+u  
js{ RaR=  
package org.rut.util.algorithm.support; {AZW."?  
fE(rDQI  
import org.rut.util.algorithm.SortUtil; ,QK>e;:Be  
q|~9%Pujg  
/** N-^\e)ln  
* @author treeroot qZ4DO*%b3  
* @since 2006-2-2 ^P[-HA|  
* @version 1.0 g;-CAd5  
*/ qLR)>$  
public class SelectionSort implements SortUtil.Sort { 9N9;EY-U  
=KX:&GU  
/* hgm`6TQ  
* (non-Javadoc) Q@2Smtu~c  
* !a  /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +;vfn>^!b  
*/ /V,:gLpQ  
public void sort(int[] data) { 7y:J@fh<  
int temp; 5[0n'uH  
for (int i = 0; i < data.length; i++) { sp JB6n(  
int lowIndex = i; ]86U -`p  
for (int j = data.length - 1; j > i; j--) { Ef#%4ky  
if (data[j] < data[lowIndex]) { .6r&<*  
lowIndex = j; )s!x)< d;  
} ]]Wa.P~]O  
} A;h~Fx6s  
SortUtil.swap(data,i,lowIndex); `S%p D.g,2  
} f@Db._ E  
} 'E6)6N  
myH#.$=A  
} !bQ5CB  
vrH/Z.WD  
Shell排序: Oq[tgmf  
CYz]tv}g:  
package org.rut.util.algorithm.support; 4/$]wK`  
3^8%/5$v  
import org.rut.util.algorithm.SortUtil; CT/`Kg_  
`a] /e  
/** cBU>/ zIp  
* @author treeroot F$d`Umqs;P  
* @since 2006-2-2 /']Gnt G.  
* @version 1.0 ?L'ijzP  
*/ 2nk}'HBe  
public class ShellSort implements SortUtil.Sort{ pm^[ve  
|06G)r&  
/* (non-Javadoc) k kY*OA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A!SHt7ysJ  
*/ p=T]%k*^h#  
public void sort(int[] data) { [}.OlR3)  
for(int i=data.length/2;i>2;i/=2){ ]GRPxh  
for(int j=0;j insertSort(data,j,i); wF}/7b54  
} kZfO`BVL  
} <wa}A!fu  
insertSort(data,0,1); iB{O"l@w  
} i,,UD  
nXXyX[c4e  
/** 9^XT,2Wwf  
* @param data YYN= `ST  
* @param j {=pf#E=  
* @param i H~fZA)W 4Y  
*/ $kg!XT{ V  
private void insertSort(int[] data, int start, int inc) { O]`CSTv'_  
int temp; "J$vt`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^[!LU  
} !DXKn\aQf  
} D}Z].c@ E  
} 4?;1cXXA  
BoXQBcG]w  
} ur"cku G!9  
a,!c6'QE  
快速排序: qpFFvZ W  
>tYptRP  
package org.rut.util.algorithm.support; A6= Um%T  
c1Xt$[_  
import org.rut.util.algorithm.SortUtil; PO1sVP.S  
$yBU ,lu}  
/** Y ~xcJH  
* @author treeroot c=h{^![$  
* @since 2006-2-2 %\2 ll=p1  
* @version 1.0 Z#%4QIz ?  
*/ zN0^FXGD  
public class QuickSort implements SortUtil.Sort{ /(5 SJ(a  
ohOze\T)=  
/* (non-Javadoc) Kb#py6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * ix&"|h  
*/ @ITJ}e4  
public void sort(int[] data) { vA*!82  
quickSort(data,0,data.length-1); X*/j na"*  
} FlttqQQdf  
private void quickSort(int[] data,int i,int j){ /V^Gn;  
int pivotIndex=(i+j)/2; >XM-xK-=  
file://swap }PUQvIGZZ&  
SortUtil.swap(data,pivotIndex,j); m6bAvy]3<t  
=;4cDmZh  
int k=partition(data,i-1,j,data[j]); +m^ gj:yL  
SortUtil.swap(data,k,j); ?l &S:` L  
if((k-i)>1) quickSort(data,i,k-1); ?v \A&d  
if((j-k)>1) quickSort(data,k+1,j); IR(qjm\V  
amK"Z<V F  
} $<OX\f%  
/** 'D;v>r  
* @param data g/)mbL>=  
* @param i fq48>"g*  
* @param j o+ r?N5  
* @return r8A   
*/ g:7S/L0]  
private int partition(int[] data, int l, int r,int pivot) { hQv~C4Wfrf  
do{ <j+DY@*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TmxhP nJ~  
SortUtil.swap(data,l,r); qH1[Bs Ox  
} 4$oNh)+/h  
while(l SortUtil.swap(data,l,r); n<+g{QHi  
return l; |Ah'KpL8W  
} 4"nb>tA  
@FKm_q  
} E3@G^Y  
^~'tQ}]!"  
改进后的快速排序: 9w9[0BX#  
wM9HZraB<  
package org.rut.util.algorithm.support; wuR Q H]N  
0Ihp`QGU:  
import org.rut.util.algorithm.SortUtil; [+\=x[q  
6vAq&Y{JB'  
/** *](maF~%C  
* @author treeroot '[Ap/:/UY  
* @since 2006-2-2 .76T<j_  
* @version 1.0 _bRd2k,  
*/ DO` K_B  
public class ImprovedQuickSort implements SortUtil.Sort { ^K. d|z  
XHKiz2Pc1  
private static int MAX_STACK_SIZE=4096; j")#"& m  
private static int THRESHOLD=10; I]+xerVd  
/* (non-Javadoc) {]BPSj{B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gG*]|>M JI  
*/ f3El9[  
public void sort(int[] data) { VbyGr~t  
int[] stack=new int[MAX_STACK_SIZE]; +GqK$B(x7  
'Z5l'Ac  
int top=-1; GrPKJ~{6  
int pivot; (&t741DN|  
int pivotIndex,l,r; #; ~`+[y?\  
?-C=_eZJ  
stack[++top]=0; g?&_5)&  
stack[++top]=data.length-1; [CxnGeKK  
x8x8T $  
while(top>0){ R!{^qHb  
int j=stack[top--]; +}1h  
int i=stack[top--]; w*#B_6bG  
}x!=F<Q!r  
pivotIndex=(i+j)/2; ]z3!hgTj  
pivot=data[pivotIndex]; >n3w'b  
rH Y SS0*3  
SortUtil.swap(data,pivotIndex,j); qw?#~"Ca.  
#@%DY*w]v  
file://partition iXLODuI  
l=i-1; kd55y  
r=j; qV]p\/a.  
do{ E0HXB1"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }9=X*'BO  
SortUtil.swap(data,l,r); X?'ShXI  
} T1$=0VSEa+  
while(l SortUtil.swap(data,l,r); B}S!l>.z  
SortUtil.swap(data,l,j); K!~j}z*  
}\ kLh(  
if((l-i)>THRESHOLD){ )bqSM&SO  
stack[++top]=i; 8k[=$Ro  
stack[++top]=l-1; ["O/%6b9+  
} +\Uq=@  
if((j-l)>THRESHOLD){ 4f~ c# 0?  
stack[++top]=l+1; /Q]6"nY  
stack[++top]=j; }OZut!_  
} l/*NscYtQ  
w1 ;:B%!H  
} *~Y$8!ad  
file://new InsertSort().sort(data); r7|_Fm Qf  
insertSort(data); O2;iY_P7lV  
} _EHz>DJ9  
/** omd oH?  
* @param data mv1g2f+  
*/ U)v){g3w)  
private void insertSort(int[] data) { ?`T0zpC  
int temp; |)5xmN]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z01BzIsR  
} S2+X/YeB  
} WzinEo{ f  
} Sjb[v  
v;6O# ta'  
} fl@=h[g#t  
x)}.@\&%  
归并排序: &JUHm_wd&S  
fI<|]c}P&J  
package org.rut.util.algorithm.support; [d d KC)tA  
uy'I#^Bt  
import org.rut.util.algorithm.SortUtil; ;r8< Ed  
OKo)p`BX  
/** Q H>e_  
* @author treeroot #!.26RM:P  
* @since 2006-2-2 3bsuE^,.@  
* @version 1.0 W _b!FQ]  
*/ jK(]e iR$S  
public class MergeSort implements SortUtil.Sort{ FH3^@@Y%  
t GS>f>i  
/* (non-Javadoc) t/$:g9V%FA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V Zz>)Kz:  
*/ Q$bi:EyJXc  
public void sort(int[] data) { W^e"()d/Z  
int[] temp=new int[data.length]; PP*',D3  
mergeSort(data,temp,0,data.length-1); 0%(.$c>:f  
} Qr.SPNUFK  
 Uf,fd  
private void mergeSort(int[] data,int[] temp,int l,int r){ }+@GgipyO.  
int mid=(l+r)/2; BT*z^Z H  
if(l==r) return ; WY& [%r  
mergeSort(data,temp,l,mid); V|\dnVQ'-%  
mergeSort(data,temp,mid+1,r); ZbAg^2  
for(int i=l;i<=r;i++){ (/i?Fd  
temp=data; _8 C:Md`  
} w. c]   
int i1=l; F`Ld WA  
int i2=mid+1; D$?}M>  
for(int cur=l;cur<=r;cur++){ 0FAe5 BE7  
if(i1==mid+1) 9 $&$Fe  
data[cur]=temp[i2++]; -bP_jIZF;g  
else if(i2>r) Ht,+KbB  
data[cur]=temp[i1++]; "/k TEp  
else if(temp[i1] data[cur]=temp[i1++]; w}rsboU  
else E+"m@63  
data[cur]=temp[i2++]; 'kb|!  
} Cs2F/M'  
} Gnthz0\]{  
"?HDv WP=w  
} 2kSN<jMr  
b+#A=Z+Pr  
改进后的归并排序: y_:~  
3:g~@PB  
package org.rut.util.algorithm.support; ~PZIYG"D  
0ZAT;eaB  
import org.rut.util.algorithm.SortUtil; <=Z`]8  
Jfs_9g5  
/** I xk+y?  
* @author treeroot MszX9wl  
* @since 2006-2-2 &:?2IAe  
* @version 1.0 X/qLg+X  
*/ WV&grG|  
public class ImprovedMergeSort implements SortUtil.Sort { y# iQ   
uGz>AW8a3  
private static final int THRESHOLD = 10; vuoD~=z  
.|g|X8X  
/* FoKAF &h7  
* (non-Javadoc) N <e72x  
* kSUpEV+/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !(i}FFn{:  
*/ G ~X93J  
public void sort(int[] data) { _I/uW|>  
int[] temp=new int[data.length]; (x!Tb2mlk  
mergeSort(data,temp,0,data.length-1); GwM(E^AG  
} 2A(?9 R9&h  
p0sq{d~  
private void mergeSort(int[] data, int[] temp, int l, int r) { }UzRFIcv  
int i, j, k; 231,v,X[  
int mid = (l + r) / 2; ;7*R;/  
if (l == r) G?dxLRy.do  
return; nXJG4$G  
if ((mid - l) >= THRESHOLD) We)l_>G  
mergeSort(data, temp, l, mid); a+=.(g  
else 6F:< c  
insertSort(data, l, mid - l + 1); [k{2)g  
if ((r - mid) > THRESHOLD) :G[6c5j|V  
mergeSort(data, temp, mid + 1, r); xe@11/F  
else Vo`,|3^  
insertSort(data, mid + 1, r - mid); 8Cef ]@x  
.H#<yPty  
for (i = l; i <= mid; i++) { $mu*iW\{  
temp = data; !m:rtPD'  
} U+ANSW/  
for (j = 1; j <= r - mid; j++) { .^!<cFkCE  
temp[r - j + 1] = data[j + mid]; TsF>Y""*M  
} "pMx(  
int a = temp[l];  Op5S'  
int b = temp[r]; U#6<80Ke  
for (i = l, j = r, k = l; k <= r; k++) { [I 6&|Lz>  
if (a < b) { nsN|[E8  
data[k] = temp[i++]; &rfl(&\oUi  
a = temp; jBMGm"NE  
} else { uA;vW\fHr  
data[k] = temp[j--]; C8W4~~1S  
b = temp[j]; 9D[Jn}E:  
} /8Ru O  
} 0BrAgv"3a_  
} $_f"NE}  
~-2Gx HO`  
/** 9 $*O^  
* @param data _?oofE:{  
* @param l Z/G?w D|B  
* @param i D^ )?*(  
*/ !]C=5~B BI  
private void insertSort(int[] data, int start, int len) { "ph<V,lg  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .K`EflN  
} wCgi@\  
} {'a|$u+  
} {$QkerW3  
} ~-f"&@){,  
-*[:3%  
堆排序: _lMSW6  
2(i| n=  
package org.rut.util.algorithm.support; M2!2 J  
i`^[_  
import org.rut.util.algorithm.SortUtil; YR-Ge  
*!MMl]gU?  
/** ?np3*;lw  
* @author treeroot 0vZ49}mb)  
* @since 2006-2-2 S LU$DW;t  
* @version 1.0 CK9FAuU  
*/ G\(cnqHk  
public class HeapSort implements SortUtil.Sort{ W 9!K~g_  
^m ['VK#?  
/* (non-Javadoc) p(6KJK\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D"M[}$P  
*/ N|e#&  
public void sort(int[] data) { ?/q\S  
MaxHeap h=new MaxHeap(); 4o|<zn  
h.init(data); UvF5u(o  
for(int i=0;i h.remove(); <Uc?#;% Y}  
System.arraycopy(h.queue,1,data,0,data.length); fM`.v+  
}  P0 9f  
2rxz<ck(  
private static class MaxHeap{  &4{!5r  
~@$RX: p  
void init(int[] data){ 3IG<Ot9  
this.queue=new int[data.length+1]; "A]#KTP  
for(int i=0;i queue[++size]=data; #QNa| f#=  
fixUp(size); y.$Ae1a=  
} mtmTlGp6Lc  
} Z(I=K BI  
4'5|YGQj  
private int size=0; ha?M[Vyw4Q  
dJ {q}U  
private int[] queue; iAo/Dnp2J  
5x"eM=  
public int get() { \}71p zw(  
return queue[1]; 3X%h?DC  
} u N4e n,  
]d~2WX Y  
public void remove() { 89x;~D1  
SortUtil.swap(queue,1,size--); ?$#P =VK  
fixDown(1); UM<!bNz`  
} 8j)*T9  
file://fixdown _< KUa\  
private void fixDown(int k) { 8n35lI ( [  
int j; Kay\;fXT  
while ((j = k << 1) <= size) { {fJCj152.  
if (j < size %26amp;%26amp; queue[j] j++; d7S?"JpV  
if (queue[k]>queue[j]) file://不用交换  &2bqL!k  
break; "7Z-ACyF5  
SortUtil.swap(queue,j,k); *x:*Q \|  
k = j; ?I$-im  
} ~REfr}0  
} [ 2PPa9F  
private void fixUp(int k) { ;0lY_ii  
while (k > 1) { G#fF("Ndu`  
int j = k >> 1; jyB Ys& v  
if (queue[j]>queue[k]) DTlId~Dyq  
break; U$ 46=F|  
SortUtil.swap(queue,j,k); ,KCxNdg^#-  
k = j; ey6ujV7!  
} Tje(hnN  
} -3u ;U,}  
<eZ*LK?  
} [HI$[ :[  
U!(es0rX  
} _2Mpzv  
U C_$5~8p  
SortUtil: GvZ[3GT  
{isL<  
package org.rut.util.algorithm; adPd}rt;  
_F5*\tQ  
import org.rut.util.algorithm.support.BubbleSort; ( k,?)  
import org.rut.util.algorithm.support.HeapSort; hr!'  
import org.rut.util.algorithm.support.ImprovedMergeSort; bct8~dY  
import org.rut.util.algorithm.support.ImprovedQuickSort; RO@=&3s  
import org.rut.util.algorithm.support.InsertSort; hd]ts.  
import org.rut.util.algorithm.support.MergeSort; R?IRE91 :  
import org.rut.util.algorithm.support.QuickSort; Y?3f Fg  
import org.rut.util.algorithm.support.SelectionSort; [+_>g4M~%  
import org.rut.util.algorithm.support.ShellSort; &$ud;r#  
.TCDv4?  
/** pD('6C;  
* @author treeroot !hFhw1  
* @since 2006-2-2 4xH/a1&p=  
* @version 1.0 FA+"t^q  
*/ 7]9,J(:Ed  
public class SortUtil { c8T| o=`k6  
public final static int INSERT = 1; }[R-)M  
public final static int BUBBLE = 2; 0U~*uDU  
public final static int SELECTION = 3; H'JU5nE  
public final static int SHELL = 4; PW82 Vp.  
public final static int QUICK = 5; dyk(/# *7W  
public final static int IMPROVED_QUICK = 6; )N*Jc @Y@  
public final static int MERGE = 7; Mo5b @ [  
public final static int IMPROVED_MERGE = 8; }m'n1tm;  
public final static int HEAP = 9; f!{@{\  
Ch\__t*v!  
public static void sort(int[] data) { " :f]egq -  
sort(data, IMPROVED_QUICK); S+#|j  
} |#sOa  
private static String[] name={ (k8}9[3G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]T'7+5w  
}; T2 S fBs  
VFzIBgJ3  
private static Sort[] impl=new Sort[]{ I]DD5l}\  
new InsertSort(), L ^r & .N\  
new BubbleSort(), 2v2XU\u{t  
new SelectionSort(), tt#dO@G#Fe  
new ShellSort(), 6oKdw|(Q#  
new QuickSort(), 'u E;8.,  
new ImprovedQuickSort(), .T)wG;+  
new MergeSort(), TkJ[N4'0  
new ImprovedMergeSort(), #f< v%  
new HeapSort() aHVzBcCPh  
}; #y[U2s Se  
TDUY&1[  
public static String toString(int algorithm){ #qh ,  
return name[algorithm-1]; \ H~zN]3^  
}  vP=68muD  
O=;jDWE  
public static void sort(int[] data, int algorithm) { ~USt&?  
impl[algorithm-1].sort(data); fvcS=nRQv  
} ?^M,Mt  
*yaS^k\  
public static interface Sort { 0y6M;"&~E  
public void sort(int[] data); _CfJKp)  
} g `%in  
cPD_=.&  
public static void swap(int[] data, int i, int j) { &w#!   
int temp = data; j:xC \b47"  
data = data[j]; 6pSi-FH  
data[j] = temp; N0.|Mb"?t  
} 4l+!Z,b  
} R(`:~@ 3\6  
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