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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。 l&6U|q`  
插入排序: 1H&?UP4=(  
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package org.rut.util.algorithm.support; P~Te+ -jX}  
*xX( !t'  
import org.rut.util.algorithm.SortUtil; j8[`~p b  
/** {t844La"  
* @author treeroot 1Lm].tq  
* @since 2006-2-2 _.d}lK3$2  
* @version 1.0 \3H<z@;  
*/ ;Cr_NP[8|j  
public class InsertSort implements SortUtil.Sort{ cg(QjH"  
( }]37  
/* (non-Javadoc) #*yM2H"7,;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zG-_!FIn  
*/ 8!u/   
public void sort(int[] data) { tC2 )j7@  
int temp; `a9k!3_L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?%\mQmjas  
} \LO_Nu9  
} g.[+yzuE6  
} r#_7]_3  
*[d~Nk%Y$  
} H$~M`Y9I~  
|8&-66pX  
冒泡排序: .sd B3x  
nB cp7e  
package org.rut.util.algorithm.support; \6`v.B&v  
2 ) TG  
import org.rut.util.algorithm.SortUtil; -"~L2f"?  
j~,h )C/ v  
/** GB&Nt{  
* @author treeroot 94T}iY.  
* @since 2006-2-2 )u39}dpeu  
* @version 1.0 D^66p8t  
*/ 8_xnWMOe  
public class BubbleSort implements SortUtil.Sort{ Sk8%(JD7  
o"'iX UJ  
/* (non-Javadoc) %B#hb<7}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z |2E b*  
*/ 'RDWU7c9]  
public void sort(int[] data) { 'R^iKNPs  
int temp; xGKfej9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b%Wd<N2  
if(data[j] SortUtil.swap(data,j,j-1); YHs?QsP  
} -M"IVyy@  
} t{_!Z(Rt5)  
} reJ"r<2  
} g~~m' ^  
N=>- Q)  
} Dz[566UD  
yB-.sGu  
选择排序: n=f`AmF;  
>$2E1HW.  
package org.rut.util.algorithm.support; |'ZN!2u  
_ymJ~MK  
import org.rut.util.algorithm.SortUtil; IYuyj(/!  
&g*klt'B  
/** 98BYtxa  
* @author treeroot n`P`yb\f$  
* @since 2006-2-2 y7CWBTH0>  
* @version 1.0 5B}3GBA  
*/  %)pP[[h  
public class SelectionSort implements SortUtil.Sort { Hab!qWK`  
OZG0AX+=#  
/* O[; +i  
* (non-Javadoc) pPoH5CzcK  
* ?K0U3V$s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <e'P%tG'  
*/ fk+1#7{  
public void sort(int[] data) { s>T`l  
int temp; $v FrUv  
for (int i = 0; i < data.length; i++) { {5SfE$r  
int lowIndex = i; hO#HvW  
for (int j = data.length - 1; j > i; j--) { ] } '^`  
if (data[j] < data[lowIndex]) { j2M4H@  
lowIndex = j; #-,g&)`]  
} %>i@F=O2<  
} zCBplb  
SortUtil.swap(data,i,lowIndex); uii7b 7[w  
} YZ0en1ly  
} Z*9L'd"D|  
f7Yz>To  
} 8GY.){d!l  
e{5,'(1]  
Shell排序: xFOBF")  
EY]a6@;  
package org.rut.util.algorithm.support; :JR<SFjm  
Lj4&_b9  
import org.rut.util.algorithm.SortUtil; m)r]F#@/  
Z+0?yQ=%  
/** jM*AL X  
* @author treeroot \ [cH/{nt  
* @since 2006-2-2 CQ<8P86gt  
* @version 1.0 9GThyY  
*/ 0Su_#".-*  
public class ShellSort implements SortUtil.Sort{ T: U4:"  
G[#.mD{k  
/* (non-Javadoc) r]9e^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TaOOq}8c#  
*/ )Lb72;!?  
public void sort(int[] data) { IK3qE!,&U  
for(int i=data.length/2;i>2;i/=2){ @.k5MOn  
for(int j=0;j insertSort(data,j,i); P 4QkY#v  
} lDC}HC  
} NS Np  
insertSort(data,0,1); >=Jsv  
} B3Mx,uXT\  
8hZwQ[hr  
/** mk\i}U>`  
* @param data y<|)'(  
* @param j h`lmC]X _  
* @param i lcCJ?!lsSW  
*/ 6%%PP8.F  
private void insertSort(int[] data, int start, int inc) { d Qai4e>[  
int temp;  [@<G+j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u%xDsT DP  
}  qtzFg#  
} qL3@PSN?|  
} v`SY6;<2  
Q&gPa]z]}  
} FZpsL-yx^N  
d5:tSO  
快速排序: K@6`-|I  
dnwdFsf  
package org.rut.util.algorithm.support; O4E(R?wd  
l~['[Ub0)  
import org.rut.util.algorithm.SortUtil; YN^T$,*  
?gN9kd)  
/** R4SxFp  
* @author treeroot _jmkl B  
* @since 2006-2-2 "7d.i(vw  
* @version 1.0 a1|c2kT  
*/ 0V3gKd7  
public class QuickSort implements SortUtil.Sort{ EI\v  
 g#qNHR  
/* (non-Javadoc) gfm;xT/y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [fxuUmU  
*/ ~0ooRUWU7  
public void sort(int[] data) { k}zd' /b  
quickSort(data,0,data.length-1); UWw}!1  
} lbS?/f  
private void quickSort(int[] data,int i,int j){ >t0%?wj)Y  
int pivotIndex=(i+j)/2; @zrNN>  
file://swap ]\BUoQ7I/  
SortUtil.swap(data,pivotIndex,j); a.DX%C /5  
69/?7r  
int k=partition(data,i-1,j,data[j]); (zC   
SortUtil.swap(data,k,j); t:=k)B  
if((k-i)>1) quickSort(data,i,k-1); H_Os4}  
if((j-k)>1) quickSort(data,k+1,j); Yx),6C3  
$/paEn"  
} b=1%pX_  
/** z,x" a  
* @param data +]c}rWm  
* @param i bDWeU}  
* @param j f05=Mc&)  
* @return x'qWM/  
*/ -`Q}tg>cT  
private int partition(int[] data, int l, int r,int pivot) { AK*N  
do{ Vho0e V=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 30_ckMG"g  
SortUtil.swap(data,l,r); |s f*hlrJ  
} |l7%l&!  
while(l SortUtil.swap(data,l,r); 4P%m>[   
return l; .*!#98pT  
} 9afh[3qm  
Me/\z^pF  
} Us-A+)r*!  
Q]rqD83((  
改进后的快速排序: 8;#AO8+U7)  
6IP$n($2  
package org.rut.util.algorithm.support; !5UfWk\G  
}lP5 GT2  
import org.rut.util.algorithm.SortUtil; /C$ xH@bb  
` ?9T~,  
/** 8QF2^*RZ7z  
* @author treeroot *QH[,F`I  
* @since 2006-2-2 8bOT*^b$H  
* @version 1.0 h$ Da&$uyI  
*/ NR4Jn?l{  
public class ImprovedQuickSort implements SortUtil.Sort { @o#+5P  
OJ/SYZ.r  
private static int MAX_STACK_SIZE=4096; {155b0  
private static int THRESHOLD=10; .GCR!V  
/* (non-Javadoc) O@jqdJu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S;=_;&68?  
*/ 1,`H:%z%  
public void sort(int[] data) { =j~Q/-`EC0  
int[] stack=new int[MAX_STACK_SIZE]; =Ndli>x}1  
+O+<Go@a  
int top=-1; XdsJwn F  
int pivot; ooE{V*Ie  
int pivotIndex,l,r; #s2B%X  
y94kX:q  
stack[++top]=0; I4D<WoU;dJ  
stack[++top]=data.length-1; [se^.[0,  
p<5!0 2yQ\  
while(top>0){ } 0M{A+  
int j=stack[top--]; 8Kk\*8 <  
int i=stack[top--]; OCnFEX"  
[U.v:tR   
pivotIndex=(i+j)/2; Rri`dmH   
pivot=data[pivotIndex]; 6Cc7ejt|u  
VT=K"`EpQ  
SortUtil.swap(data,pivotIndex,j); mxJXL":|  
=_PvrB2'  
file://partition qC@Ar)T  
l=i-1; -$YJfQE6G  
r=j; XmWlv{T+  
do{ hz\WZ^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l6 7KJ  
SortUtil.swap(data,l,r); i-lKdpv  
} T?npQA07=  
while(l SortUtil.swap(data,l,r); /IR#A%U  
SortUtil.swap(data,l,j); +\`rmI  
_%ZP{5D>  
if((l-i)>THRESHOLD){ V1utUGJV  
stack[++top]=i; <>=mCZ2  
stack[++top]=l-1; ]V<-J   
} {/}^D-  
if((j-l)>THRESHOLD){ 6)[< )?A.[  
stack[++top]=l+1; #3MKH8k&~  
stack[++top]=j; {TAw)!R~  
} , 2`~ NPb  
H}nJbnU  
} HZZDv+  
file://new InsertSort().sort(data); nl n OwyMJ  
insertSort(data); 8Xn!Kpa  
} 9.&mz}q  
/** 6RK\}@^=K  
* @param data "!L kp2\  
*/ >I<PO.c!  
private void insertSort(int[] data) { G7-!`-Nk  
int temp; - k`.j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gt~JA0+C)7  
} nQ=aLV+'  
} Eg8i _s~:  
} z%:&#1)  
m 22wF>9  
} AyVrk 8G  
ndi+xaQtG  
归并排序: #ia;- 3  
G/{ ~_&t  
package org.rut.util.algorithm.support; 9%!dNnUk  
3~%!m<1:  
import org.rut.util.algorithm.SortUtil; S_Z`so}  
C;qMw-*F  
/** Q_O*oT(0  
* @author treeroot 4| Ui?.4=  
* @since 2006-2-2 9lspo~M  
* @version 1.0 Ty+I8e]{  
*/ )`?%]D  
public class MergeSort implements SortUtil.Sort{ *H2]H @QHN  
'*!L!VJ  
/* (non-Javadoc) &mkpJF/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Kto.Xq  
*/ W3JF5*  
public void sort(int[] data) { .zC*Z&e,.[  
int[] temp=new int[data.length]; A';QuWdT  
mergeSort(data,temp,0,data.length-1); <z)E (J\  
} \:&@;!a  
A3+6 #?:;  
private void mergeSort(int[] data,int[] temp,int l,int r){ P!<[U!<hH  
int mid=(l+r)/2; ,rO[mNk9@  
if(l==r) return ; *%A}x   
mergeSort(data,temp,l,mid); k4y}&?$B  
mergeSort(data,temp,mid+1,r); rK|*hcy  
for(int i=l;i<=r;i++){ I>"Ci(N  
temp=data; A6p`ma $L  
} {a "RXa  
int i1=l; lhPGE_\  
int i2=mid+1; P(ZQDTbM :  
for(int cur=l;cur<=r;cur++){ (|u31[  
if(i1==mid+1) :&yDqoQKJ  
data[cur]=temp[i2++]; ^:cRp9l"7  
else if(i2>r) -cfx2;68  
data[cur]=temp[i1++]; FFzH!=7T?  
else if(temp[i1] data[cur]=temp[i1++]; rC }}r!!  
else w~+aW(2  
data[cur]=temp[i2++]; M{KW@7j  
} flnVYQe  
} 8MF2K6  
8cdsToF(e.  
} (:sZ b?*  
U Cb02h  
改进后的归并排序: m#H_*L0  
T V:<TR  
package org.rut.util.algorithm.support; j _ ;fWBD:  
z<n-Gzwk  
import org.rut.util.algorithm.SortUtil; tXq)nfGe{  
!OE*z $\  
/** IXq(jhm8bL  
* @author treeroot CqoG.1jJS  
* @since 2006-2-2 2\@Z5m3B  
* @version 1.0 &/WAZs$2n  
*/ _>_j\b  
public class ImprovedMergeSort implements SortUtil.Sort { @ 4UxRp6+  
QLr9dnA  
private static final int THRESHOLD = 10; PT]GJ<K/  
4hAJ!7[A.  
/* w^;DG  
* (non-Javadoc) o`?zF+M0  
* Y(VO.fVJK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .eF_cD7v  
*/ OO-k|\{ |  
public void sort(int[] data) { GozPvR^/  
int[] temp=new int[data.length]; g22gIj]  
mergeSort(data,temp,0,data.length-1); =m tY  
} ' [p)N,  
qL 5>o>J  
private void mergeSort(int[] data, int[] temp, int l, int r) { oF|N O^H  
int i, j, k; nWaNT-  
int mid = (l + r) / 2; gH7z  
if (l == r) APSgnf  
return; b?VV'{4  
if ((mid - l) >= THRESHOLD) Yl({)qK{  
mergeSort(data, temp, l, mid); o"+ i&Wp~  
else 1}g:|Q  
insertSort(data, l, mid - l + 1); %SA!p;  
if ((r - mid) > THRESHOLD) reiU%C  
mergeSort(data, temp, mid + 1, r); -x]`DQUg  
else 9-lEtl%  
insertSort(data, mid + 1, r - mid); 0Y?H0  
T>d.#  
for (i = l; i <= mid; i++) { 1FERmf? ?d  
temp = data; (! KG)!  
} ;ojiJ ?jU  
for (j = 1; j <= r - mid; j++) { ]<trA$ 0  
temp[r - j + 1] = data[j + mid]; ls|LCQPx  
} 82:Wvp6  
int a = temp[l]; x` /)g(  
int b = temp[r]; "/+zMLY  
for (i = l, j = r, k = l; k <= r; k++) { Qn+:/ zA;  
if (a < b) { b2) \ MNH  
data[k] = temp[i++]; K1q+~4>\|  
a = temp; <$i4?)f(  
} else { <bUe/m  
data[k] = temp[j--]; ,+1m`9}  
b = temp[j]; X.#oEmA ,P  
} w{,4rk;Hr  
} }31Z X  
} &m'kI  
MC!ZX)mF  
/** UY>v"M  
* @param data @,OT/egF4:  
* @param l C"eXs#A  
* @param i QMp r v*i  
*/ ]r/^9XaqtA  
private void insertSort(int[] data, int start, int len) { Pq p *  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w"zE_9I\  
} =$^MQ\S0p  
} !a-b6Aa  
} fZN><3MO>  
} E4oz|2!m  
Z" v<0]rN  
堆排序: C/@LZ OEL  
I.jZ wW!r  
package org.rut.util.algorithm.support; p{tK_ZBy]c  
%s=Dj2+  
import org.rut.util.algorithm.SortUtil; #I0pYA2m  
jAhP> t:  
/** 1{PG>W  
* @author treeroot i*[n{=*l@  
* @since 2006-2-2 l*}FXL  
* @version 1.0 dt,3"J  
*/ M]rO;^;6?  
public class HeapSort implements SortUtil.Sort{ W`)<vGn=Y  
t~p y=\  
/* (non-Javadoc) 6 "gj!/e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k&6I f0i  
*/ 2}WDw>V  
public void sort(int[] data) { {ERMGd6Jp  
MaxHeap h=new MaxHeap(); 1=)r@X/6d  
h.init(data); 0Y+FRB ]u  
for(int i=0;i h.remove(); ${r[!0|   
System.arraycopy(h.queue,1,data,0,data.length); /n{1o\  
} `=)2<Ca;~@  
r@}bDkx  
private static class MaxHeap{ 9Sg<K)Mc  
>hsuAU.UOR  
void init(int[] data){ [~mGsXV  
this.queue=new int[data.length+1]; =JO^XwUOo  
for(int i=0;i queue[++size]=data; AR&:Q4r|  
fixUp(size); +]wuJSxc  
} q9*MNHg }  
} <M+R\SH-  
smy}3k  
private int size=0; v;2CU  
)b4$A:  
private int[] queue; grom\  
:1wrVU-?h  
public int get() { > s EjR!  
return queue[1]; ql{_%x?  
} L8$1K&!  
Ib`-pRU;  
public void remove() { yi6N-7  
SortUtil.swap(queue,1,size--); `wz[='yM  
fixDown(1); pmc=NTr&<  
} 3=.Y,ENM;  
file://fixdown On_@HQ/FI  
private void fixDown(int k) { 6ghx3_%w  
int j; D]03eu  
while ((j = k << 1) <= size) { 1=VJ&D;  
if (j < size %26amp;%26amp; queue[j] j++; Z|m`7xeCy  
if (queue[k]>queue[j]) file://不用交换 5Jk<xWKj  
break; p .K*UP  
SortUtil.swap(queue,j,k); *VeW?mY,P  
k = j; <=um1P3X  
} %&blJ6b  
} I["j=r  
private void fixUp(int k) { Qu\@Y[eia5  
while (k > 1) { dJuD|9R  
int j = k >> 1; JAb6zpP  
if (queue[j]>queue[k]) hf<J \   
break; QfpuZEUK  
SortUtil.swap(queue,j,k); #2p#VQh  
k = j; lFG9=Wf  
} Y%`SHe7M  
} 1T|$BK@)  
Z*! O:/B  
} JgfVRqm   
&)9{HRP  
} hlbvt-C?}"  
3{7T4p.G  
SortUtil: TpfZ>d2  
Ty4S~ClO#'  
package org.rut.util.algorithm; WCq /c6 D  
.IrNa>J~  
import org.rut.util.algorithm.support.BubbleSort; 4vZ4/#(x  
import org.rut.util.algorithm.support.HeapSort; N3A<:%s  
import org.rut.util.algorithm.support.ImprovedMergeSort; L EWhb!U  
import org.rut.util.algorithm.support.ImprovedQuickSort; `#s#it'y  
import org.rut.util.algorithm.support.InsertSort; ~W#sTrK  
import org.rut.util.algorithm.support.MergeSort; Gwec 4D  
import org.rut.util.algorithm.support.QuickSort; @_ygnNn4R  
import org.rut.util.algorithm.support.SelectionSort; ii|? ;  
import org.rut.util.algorithm.support.ShellSort; s95F#>dr  
{,$rkwW  
/** 4mYCSu14:`  
* @author treeroot ?8V UO x  
* @since 2006-2-2 s|yVAt|=  
* @version 1.0  1jCo  
*/ (c\hy53dP  
public class SortUtil { ':h =*v8a  
public final static int INSERT = 1; Rd&9E  
public final static int BUBBLE = 2; kyYLP"oB=  
public final static int SELECTION = 3; 8G^<[`.@j  
public final static int SHELL = 4; 7{kP}?  
public final static int QUICK = 5;  ht97s  
public final static int IMPROVED_QUICK = 6; %/9;ZV  
public final static int MERGE = 7; R`'1t3p0i  
public final static int IMPROVED_MERGE = 8; P7 yq^|  
public final static int HEAP = 9; } (FPV*mS  
}M>r E  
public static void sort(int[] data) { S7iDTG_@t  
sort(data, IMPROVED_QUICK); /%rq hHs  
} \1%l^dE@  
private static String[] name={ vv0Q$ O->  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,I.WX,OR  
}; VRng=,  
-%c<IX>z9  
private static Sort[] impl=new Sort[]{ 6cS>bl  
new InsertSort(), X* eW#|$\  
new BubbleSort(), w|Cx>8P8@  
new SelectionSort(), uBnoQ~Qd[z  
new ShellSort(), K!z`  
new QuickSort(), kQ>^->w  
new ImprovedQuickSort(), w!^~<{ Kz  
new MergeSort(), G7LIdn=  
new ImprovedMergeSort(), Q\Kx"Y3i  
new HeapSort() Td\o9  
}; O'*@ Ytn  
afEF]i  
public static String toString(int algorithm){ 0$.m_0H  
return name[algorithm-1]; |Bo .4lX  
} _s.;eHp,  
 \[:/CxP  
public static void sort(int[] data, int algorithm) { Z?NW1m()F  
impl[algorithm-1].sort(data); AasZuO_I  
} `RRE(SiKU  
El2e~l9  
public static interface Sort { M" lg%j  
public void sort(int[] data); 3.Gj4/f  
} /s:fW+C  
bJ /5|E?  
public static void swap(int[] data, int i, int j) { _D7]-3uC!  
int temp = data; &K+0xnUH  
data = data[j]; |`d0^(X  
data[j] = temp; A Io|TD5{~  
} Q%S9fq,q  
} jvy$t$az  
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