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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。 >.meecE?Q  
插入排序: !!C/($  
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package org.rut.util.algorithm.support; f~VlCdf+  
}n^Rcz6HeO  
import org.rut.util.algorithm.SortUtil; zu d_BOq{f  
/** cx[^D,usf~  
* @author treeroot ?[JP[ qS  
* @since 2006-2-2 }$_@yt<{W@  
* @version 1.0 8?Zhh.  
*/ ]PS`"o,pF$  
public class InsertSort implements SortUtil.Sort{ $INB_/R E  
9nR\7!_  
/* (non-Javadoc) <- \|>r Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;wwc;wQ'  
*/ ?X@!jB,Pv  
public void sort(int[] data) { G80N8Lm  
int temp; GRcPzneiz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x7S\-<8  
} !Gmnck&+  
} V,-we|"  
} &5 "!  0  
3^/w`(-{@  
} .\ Ijq!  
=UKxf  
冒泡排序:  \0)jWCK  
vhBW1/w&F  
package org.rut.util.algorithm.support; G^.N$wcv  
DhE-g<  
import org.rut.util.algorithm.SortUtil; b1C)@gl!Z  
gGrVpOzBj  
/** jrp>Y:  
* @author treeroot t]HY@@0g  
* @since 2006-2-2 ]$/oSa/  
* @version 1.0 Mq\=pxC@  
*/ T]tP!a;K  
public class BubbleSort implements SortUtil.Sort{ +p%3pnj:K  
bv4umL /  
/* (non-Javadoc) ^L%_kL_7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P) vD?)Q  
*/ N`W[Q>n  
public void sort(int[] data) { kyHli~Nr"  
int temp; JV~ Dly>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )Q1>j 2 &  
if(data[j] SortUtil.swap(data,j,j-1); # 55>?  
} w5>[hQR\  
} ||:> &  
} RBQ8+^  
} +(*HDa|  
iwF_'I$#N  
} A4"TJZBg}  
@} Ig*@  
选择排序: cQEUHhRg!  
Qj^Uz+b  
package org.rut.util.algorithm.support; CV0id&Nv  
Lap?L/NS  
import org.rut.util.algorithm.SortUtil; L"b&O<N o  
Bt<)1_  
/** S)U*1t7[  
* @author treeroot UyRy>:n  
* @since 2006-2-2 lsax.uG5x  
* @version 1.0 ?F05BS#)X  
*/ 7eCj p  
public class SelectionSort implements SortUtil.Sort { O h@z<1eYZ  
'C5id7O&  
/* h7#\]2U$[5  
* (non-Javadoc) T?RY~GA  
* m}l);P^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o898pg  
*/ 27!F B@k-  
public void sort(int[] data) { mz0{eO  
int temp; f\ P0%  
for (int i = 0; i < data.length; i++) { ,[;O'g?,g  
int lowIndex = i; `jeATxWv  
for (int j = data.length - 1; j > i; j--) { ZXx1S?u  
if (data[j] < data[lowIndex]) { uZl d9u  
lowIndex = j; Q+Bl1xl  
} 'APx  
} JSB+g;  
SortUtil.swap(data,i,lowIndex); H@(O{ 9Yl;  
} 3H,x4L5j  
} `Abd=1nH  
LGhK)]:  
} j- 9)Sijj{  
-@XSDfy7S  
Shell排序: pN^g.  
_%CM<z e  
package org.rut.util.algorithm.support; Z1,rN#p9  
nL?P/ \  
import org.rut.util.algorithm.SortUtil; Gi)Vr\Q.  
"lt<$.  
/** UV2W~g  
* @author treeroot }R;}d(C`  
* @since 2006-2-2 1WtE] D  
* @version 1.0 obvE m[x!Z  
*/ f7*Qa!!2p]  
public class ShellSort implements SortUtil.Sort{ <6(0ZO%,C!  
q|ce7HnK  
/* (non-Javadoc) atZe`0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >*EZZ\eU!  
*/ $q\"d?n  
public void sort(int[] data) { kEh\@x[  
for(int i=data.length/2;i>2;i/=2){ 4ior  
for(int j=0;j insertSort(data,j,i); ovp/DM  
} M+:5gMB'  
} d dgDq0N1j  
insertSort(data,0,1); }F]Z1('  
} r:sa|+  
HVa D  
/** IT NFmD  
* @param data sV#%U%un  
* @param j 5$ik|e^:y  
* @param i u4hn9**a1  
*/ Mst%]@TG  
private void insertSort(int[] data, int start, int inc) { }-tJ.3Zw  
int temp; GFT@Pqq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _S) K+C|@  
} frcX'M}%  
} /%cDX:7X  
} *Hx*s_F  
a]Pi2:S  
} %fg6', 2  
f:M^q ;  
快速排序: , >WH)+a  
F`4W5~`  
package org.rut.util.algorithm.support; x:-NTW -g  
@A6iY  
import org.rut.util.algorithm.SortUtil; s={>{,E  
KH,f'`  
/** #;8)UNc)}  
* @author treeroot _jX,1+M  
* @since 2006-2-2 }36AeJ7L  
* @version 1.0 K{d3)lVYCS  
*/ 9"^ib9M  
public class QuickSort implements SortUtil.Sort{ z*T41;b  
#U-y<[ 3  
/* (non-Javadoc) ~+{*KPiD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F9LKO3Rh#u  
*/ M IIa8 ;  
public void sort(int[] data) { t<te{yt%  
quickSort(data,0,data.length-1); ~2>Adp  
} M_!]9#:K7  
private void quickSort(int[] data,int i,int j){ d21thV ,S  
int pivotIndex=(i+j)/2; 2D%2k  
file://swap _Yo)m |RaB  
SortUtil.swap(data,pivotIndex,j); 0y$VPgsKf  
Y[e.1\d'  
int k=partition(data,i-1,j,data[j]); Y*@7/2,  
SortUtil.swap(data,k,j); gE#|eiu  
if((k-i)>1) quickSort(data,i,k-1); (8 7wWhH  
if((j-k)>1) quickSort(data,k+1,j); z#!<[**&  
CE M4E  
} W^09tx/I  
/** l1]N&jN{  
* @param data O`CZwXD  
* @param i S$SCW<LuN  
* @param j z$1|D{  
* @return Vl+UC1M}B>  
*/ IwYfs]-  
private int partition(int[] data, int l, int r,int pivot) { 2@bOy~$A  
do{ gH7  +#/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \j!/l f)  
SortUtil.swap(data,l,r); @MibKj>o  
} _v#pu Fy  
while(l SortUtil.swap(data,l,r); Xj]9/?B?  
return l; \ C:Gx4K  
} lrc%GU):  
k% \;$u=%  
} #CLjQJ  
:g$"Xc8Zn  
改进后的快速排序: 5 v.&|[\k  
A'CD,R+gR  
package org.rut.util.algorithm.support; o;wSG81  
o.r D  
import org.rut.util.algorithm.SortUtil; J jZB!Lg=  
Otu?J_d3  
/** `=;}I@]zj)  
* @author treeroot r]LP=K1  
* @since 2006-2-2 *-*V>ntvT$  
* @version 1.0 nZ=[6?  
*/ RCfeIHL  
public class ImprovedQuickSort implements SortUtil.Sort { >A{e,&  
D0 k ,8|  
private static int MAX_STACK_SIZE=4096;  I wj[ ^  
private static int THRESHOLD=10; \V'fB5  
/* (non-Javadoc) RUr ~u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zU[o_[+7^  
*/ o.Ww .F  
public void sort(int[] data) { QN;5+p[N  
int[] stack=new int[MAX_STACK_SIZE]; Mm,\e6#*  
>7@,,~3  
int top=-1; #<Y3*^~5d  
int pivot; CSjd&G *ZB  
int pivotIndex,l,r; 3_G0eIE"u  
m^BXLG:b  
stack[++top]=0; 5vD\?,f E  
stack[++top]=data.length-1; h)sT37  
EyR/   
while(top>0){ vg?(0Gasm*  
int j=stack[top--]; G "+[@|  
int i=stack[top--]; f\?Rhyz  
1d!s8um;  
pivotIndex=(i+j)/2; [pms>TQ2  
pivot=data[pivotIndex]; s8A"x`5(  
^%%Rf  
SortUtil.swap(data,pivotIndex,j); "&XhMw4  
(8~mf$ zx,  
file://partition V*JqC  
l=i-1; msw'n  
r=j; %npLgCF  
do{ ({Yfsf,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O_s /BoB@  
SortUtil.swap(data,l,r); %gn@B2z  
} q9x@Pc29d  
while(l SortUtil.swap(data,l,r); cl#XiyK>  
SortUtil.swap(data,l,j); N (\n$bpTt  
5jK|  
if((l-i)>THRESHOLD){ ga KZ4#  
stack[++top]=i; k"7ZA>5jk  
stack[++top]=l-1; 2ia&c@P-  
} Q2oo\  
if((j-l)>THRESHOLD){ **-rPonM[  
stack[++top]=l+1; UazK0{t<f  
stack[++top]=j; '/D2d  
} BbFLT@W4  
5WHqD!7u  
} ~9@527m<',  
file://new InsertSort().sort(data); U*N{H$ACuR  
insertSort(data);  \aof  
} +(`D'5EB(  
/** s`Z.H5V>\  
* @param data G$_)X%Vb I  
*/ QgH{J8 0  
private void insertSort(int[] data) { %qJgtu"8  
int temp; d8 ~%(I9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r9-ayp#pC  
} 5mVO9Q j  
} YG?4DF  
} &B :L9^  
[+5g 9tBJ  
} 2T%sHp~qt  
e6J>qwD?  
归并排序:  3bd`q $  
w&}<b%l  
package org.rut.util.algorithm.support; b&,Z mDJh  
g~|vmVBua  
import org.rut.util.algorithm.SortUtil; 5m@'( ] j  
?~sNu k  
/** +MYrNR.p  
* @author treeroot 3y$6}Kp4?  
* @since 2006-2-2 ]n@T5*=  
* @version 1.0 EBWM8~Nm#  
*/ _8SB+s*  
public class MergeSort implements SortUtil.Sort{ ]) v61B  
IrRe6nf@K  
/* (non-Javadoc) =>o !   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |gk4X%o6  
*/ L B.B w  
public void sort(int[] data) { ~c+=$SL-=  
int[] temp=new int[data.length]; 7r3CO<fb  
mergeSort(data,temp,0,data.length-1); *\+oe+3  
} T6?03cSE  
#CJ ET  
private void mergeSort(int[] data,int[] temp,int l,int r){ [T'[7 Z  
int mid=(l+r)/2; c#?~1@=  
if(l==r) return ; Bk~lM'  
mergeSort(data,temp,l,mid); %H_-`A`  
mergeSort(data,temp,mid+1,r); >^W6'Q$P<  
for(int i=l;i<=r;i++){ vEG7A$Z"  
temp=data; c9@3=6S/  
} #u"@q< )  
int i1=l; fhdqes])  
int i2=mid+1; >'m&/&h  
for(int cur=l;cur<=r;cur++){ K}n.k[Do  
if(i1==mid+1) U7fNA7#x"  
data[cur]=temp[i2++]; li{<F{7  
else if(i2>r) dA2@PKK  
data[cur]=temp[i1++]; Gys-Im6>~@  
else if(temp[i1] data[cur]=temp[i1++]; xz} CqPJ#  
else ; X+.Ag  
data[cur]=temp[i2++]; V\n!?1{kdF  
} RV]QVA*i  
} | "b|Q  
247vU1  
} `6YN/"unfp  
]m &Ss  
改进后的归并排序: ?|`n&HrP  
PxWH)4  
package org.rut.util.algorithm.support; gDw(_KC  
&_@M 6[-  
import org.rut.util.algorithm.SortUtil; 7^@ 1cA=S  
2=<,#7zlJ  
/** } nIYNeP?D  
* @author treeroot L*p7|rq$"  
* @since 2006-2-2 I"8Z'<|/\q  
* @version 1.0 ~rq:I<5  
*/ Xmb##:  
public class ImprovedMergeSort implements SortUtil.Sort { Jp8,s%  
I@Y k &aU  
private static final int THRESHOLD = 10; _TJk Yz$  
Z,-TMtM7  
/* :vS/Lzk  
* (non-Javadoc) SN7_^F  
* c/F!cW{z^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q?>*h xzoP  
*/ |Ul4n@+2  
public void sort(int[] data) { ::GW  
int[] temp=new int[data.length]; KB~`3Wj|Z  
mergeSort(data,temp,0,data.length-1);  *ni0.  
} " :[;}f;  
MCXt,`}[  
private void mergeSort(int[] data, int[] temp, int l, int r) { %Zfh6Bl\X  
int i, j, k; U3M;{_g  
int mid = (l + r) / 2; 5ff5M=M  
if (l == r) 1} _<qk9  
return; 1?"Zrd  
if ((mid - l) >= THRESHOLD) \O~WMN  
mergeSort(data, temp, l, mid); ?}uvpB1}  
else \|4F?Y  
insertSort(data, l, mid - l + 1); ignOF  
if ((r - mid) > THRESHOLD) ^4[QX -_2  
mergeSort(data, temp, mid + 1, r); ~dgFr6  
else 5YUe>P D  
insertSort(data, mid + 1, r - mid); +,i_G?eX  
MP )nQ  
for (i = l; i <= mid; i++) { r' |ei,  
temp = data; ,>kXn1 ,  
} V6Of(;r  
for (j = 1; j <= r - mid; j++) { b ts*qx&)  
temp[r - j + 1] = data[j + mid]; PKGqu,J,  
} uc=u4@.>  
int a = temp[l]; pJo4&Ff  
int b = temp[r]; '7@Dw;   
for (i = l, j = r, k = l; k <= r; k++) { xkkG#n)  
if (a < b) { hPKutx  
data[k] = temp[i++]; 0G'v4Vj0'  
a = temp; sAK&^g  
} else { dJb7d`  
data[k] = temp[j--]; l{kacfk#  
b = temp[j]; i4SWFa``  
} M%!j\}2A  
} mkgL/h*  
} K|;L{[[yH  
<BdC#t:*L  
/** '&]6(+I>  
* @param data d%!yFix;<  
* @param l L<Z2  
* @param i x;4m@)Mu  
*/ g ZES}]N  
private void insertSort(int[] data, int start, int len) { xKT;1(Mk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ILHn~d IC  
} g,Rh Ut9  
} ;>]dwsA*P  
} Z ]OX6G  
} 0h('@Hb.K#  
4i29nq^n  
堆排序: u b@'(*  
%7Gq#rq  
package org.rut.util.algorithm.support; UyMlk  
'?$< k@mJW  
import org.rut.util.algorithm.SortUtil; I wu^@  
wA87|YK8*  
/** K=P LOC5  
* @author treeroot Ml_!)b  
* @since 2006-2-2 "x3!F&  
* @version 1.0 ?J"Y4,{  
*/ `K2vG`c  
public class HeapSort implements SortUtil.Sort{ 1-G-p:|  
uBaGOW|Pl  
/* (non-Javadoc) grDz7\i:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z-nV!#  
*/ /DSy/p0%  
public void sort(int[] data) { RS7J~Q  
MaxHeap h=new MaxHeap(); ~}G#ys\1  
h.init(data); 6x@]b>W  
for(int i=0;i h.remove(); w#sP5qKv8  
System.arraycopy(h.queue,1,data,0,data.length); z2dW)_fU$  
} !:D,|k\m  
1n $  
private static class MaxHeap{ 9H%ixBnM  
=mxj2>,&  
void init(int[] data){ "W"r0"4  
this.queue=new int[data.length+1]; "N=q>jaX  
for(int i=0;i queue[++size]=data; tqU8>d0^  
fixUp(size); d^|r#"o[  
} L%.=Sb mS  
} XfwH1n/o#  
A+hT2Ew@t}  
private int size=0; &([Gc+"5E.  
wY7+E/  
private int[] queue; R1:7]z0B  
DEenvS`,P  
public int get() { >LFj@YW_)  
return queue[1]; Nw3IDy~T  
} i32S(3se  
rT{ 2  
public void remove() { CyJZip  
SortUtil.swap(queue,1,size--); T"Nnl(cO_  
fixDown(1); xQzXl  
} .zdmUS :  
file://fixdown &([yI>%  
private void fixDown(int k) { \@j3/!=,n%  
int j; &$pA,Gjin\  
while ((j = k << 1) <= size) { i]zTY\gw8M  
if (j < size %26amp;%26amp; queue[j] j++; ~rbJtz  
if (queue[k]>queue[j]) file://不用交换  p;vrPS  
break; liH1r1M  
SortUtil.swap(queue,j,k); ^aL> /'Y#|  
k = j; 95-%>?4  
} /.m}y$@GV  
} `Jl_'P}  
private void fixUp(int k) { MPJ0>Ly  
while (k > 1) { mp0! S  
int j = k >> 1; 5R#:ALwX:  
if (queue[j]>queue[k]) No w2ad&  
break; I]N!cEr;@-  
SortUtil.swap(queue,j,k); '\LU 8VC  
k = j; UeSPwY  
} 2ZQ|nwb7  
} { *Wc`ZBY  
S!~p/bB[+I  
} + oNr c.  
hhr>nuA  
} vP/sG5$x  
1);E!D[  
SortUtil: G)7J$4R  
hmtDw,j  
package org.rut.util.algorithm; ! 9=Y(rb  
6E:5w9_=c  
import org.rut.util.algorithm.support.BubbleSort; r Ww.(l  
import org.rut.util.algorithm.support.HeapSort; RS  Vt  
import org.rut.util.algorithm.support.ImprovedMergeSort; s Qa9M  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5ZHO+@HiFH  
import org.rut.util.algorithm.support.InsertSort; wRE2rsXoU  
import org.rut.util.algorithm.support.MergeSort; ;UWp0d%  
import org.rut.util.algorithm.support.QuickSort; x/#.%Ga#T  
import org.rut.util.algorithm.support.SelectionSort; !Ka~X!+\  
import org.rut.util.algorithm.support.ShellSort; #0/^v*  
\'Ca%j  
/** &d[%  
* @author treeroot 3+:uV  
* @since 2006-2-2 [[8h*[:  
* @version 1.0 wEbO|S+K1  
*/ v|YJ2q?19  
public class SortUtil { v!rOT/I  
public final static int INSERT = 1; H?dEgubg7]  
public final static int BUBBLE = 2; o(Ro/U(Wu  
public final static int SELECTION = 3; Sy34doAZ  
public final static int SHELL = 4; ]hA]o7 k  
public final static int QUICK = 5; LfG$?<}hR  
public final static int IMPROVED_QUICK = 6; \!'K#%]9  
public final static int MERGE = 7; +Ram%"Zwh  
public final static int IMPROVED_MERGE = 8; /Oa.@53tK6  
public final static int HEAP = 9; %'[ pucEF  
e#{l  
public static void sort(int[] data) { U\",!S~<  
sort(data, IMPROVED_QUICK); w'!J   
} ~1.~4~um  
private static String[] name={ ; WsV.n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f n\&%`U  
}; ~Uaz;<"j0  
bR|1* <  
private static Sort[] impl=new Sort[]{ <fcw:Ae  
new InsertSort(), 0'tm.,  
new BubbleSort(), n(el  
new SelectionSort(), :Nw7!fd  
new ShellSort(), \b|Q`)TK  
new QuickSort(), |0a GX]Y  
new ImprovedQuickSort(), .1?7)k v  
new MergeSort(), `v$Bib)  
new ImprovedMergeSort(), {c:ef@'U  
new HeapSort() h5m6 )0"  
}; 3ocRq %%K  
+N!!Z2  
public static String toString(int algorithm){ 5v-o2  
return name[algorithm-1]; 0i9C\'W`  
} 7)+%;|~  
&5;y&dh  
public static void sort(int[] data, int algorithm) { ffE>%M*  
impl[algorithm-1].sort(data); JQWW's}  
} Rk52K*Dc  
>dqeGM7Np>  
public static interface Sort { I45\xP4i  
public void sort(int[] data); ~6:y@4&F  
} p` LPO  
cK+y3`.0  
public static void swap(int[] data, int i, int j) { r=pb7=M#LN  
int temp = data; vE+OL8V  
data = data[j]; DM@&=c  
data[j] = temp; $ *^E  
} 'l3K*lck  
} {V9}W<  
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