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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。 .}zpvr8YP  
插入排序: e.:SBXZ  
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package org.rut.util.algorithm.support; W2\ Q-4D  
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import org.rut.util.algorithm.SortUtil; ^@0-E@ {c  
/** +r 2\v  
* @author treeroot WSPlM"h  
* @since 2006-2-2 `&-)(#  
* @version 1.0 yhi6RDS  
*/ 235wl  
public class InsertSort implements SortUtil.Sort{ X #!oG)or  
47 _";g@X  
/* (non-Javadoc) qf2;yRc&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  'WW['  
*/ .^J7^ Ky,  
public void sort(int[] data) { d5ivtK?  
int temp; j*aYh^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7JI&tlR4\c  
} BXf.^s{H  
} l;gj],*  
} NFQR  
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} =Nj58l  
8+7=yN(  
冒泡排序: ve|`I=?2  
H _%yh,L  
package org.rut.util.algorithm.support; VD*xhuy$k  
?NL>xMA  
import org.rut.util.algorithm.SortUtil; ix=H=U]Q{  
(YJ]}J^  
/** ORo +=2  
* @author treeroot ADa'(#+6  
* @since 2006-2-2 =_/,C  
* @version 1.0 ? <.U,  
*/ /:j9 #kj  
public class BubbleSort implements SortUtil.Sort{ 8v)PDO~D}A  
uJP9J  U  
/* (non-Javadoc) `RG_FS"v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &E>zvRBQ  
*/ 3g#fX{e_5!  
public void sort(int[] data) { D|1pBn.b]'  
int temp; 3)J0f+M>dv  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \dL# PI3  
if(data[j] SortUtil.swap(data,j,j-1); ]k (n_+!  
} ) !!xvyc  
} A S#D9o  
} Ih!D6  
} "c  S?t  
%7$oig\wE  
} DNy1} 3wg  
?kvkdHEO_  
选择排序: +I?T|Iin  
u$ZahN!  
package org.rut.util.algorithm.support; <A,G:&d~  
:  Jh  
import org.rut.util.algorithm.SortUtil; W_zAAIY_Y  
_/)?GXwLn  
/** (!nhU  
* @author treeroot XVfp* `  
* @since 2006-2-2 ?V}AwLX}  
* @version 1.0 kS$HIOt823  
*/ Wkk=x&  
public class SelectionSort implements SortUtil.Sort { hkO)q|1  
+C{ %pF  
/* [akyCb  
* (non-Javadoc) Us ]Uy|j  
* cXO_g!&2A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c !ybz{L  
*/ "/)}Cc,L  
public void sort(int[] data) {  'S f  
int temp; ZR3x;$I~4  
for (int i = 0; i < data.length; i++) { #0HF7C3  
int lowIndex = i; ,'CDKzY  
for (int j = data.length - 1; j > i; j--) { 3eV(2  
if (data[j] < data[lowIndex]) { 43mV~Oj  
lowIndex = j; J jCzCA:K_  
} uxq!kF'Ls  
} $h Is ab_  
SortUtil.swap(data,i,lowIndex); oy-Qy  
} U+!H/R)(  
} _BcYS  
T~k5` ~\(  
} NC; 4  
P^%.7C  
Shell排序: -4p^wNR  
]3iu-~  
package org.rut.util.algorithm.support; |4i,Vkfhe  
$ V"~\h8  
import org.rut.util.algorithm.SortUtil;  _"ysJ&  
\jdpL1  
/** EiY i<Z_S  
* @author treeroot urHQb5|T}  
* @since 2006-2-2 Zcg=a_  
* @version 1.0 )>)_>[  
*/ K%<Z"2!+  
public class ShellSort implements SortUtil.Sort{ <!\J([NM8  
Riq5Au?*)  
/* (non-Javadoc) I3xx}^V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BPnZ"w_  
*/ ,=tVa])  
public void sort(int[] data) { uBk$zs  
for(int i=data.length/2;i>2;i/=2){ jZ< *XX  
for(int j=0;j insertSort(data,j,i); BZqb o`9  
} FU0&EO  
} lqOv_q  
insertSort(data,0,1); 7 :s6W%W1*  
} DTdL|x.{  
_Y*: l7  
/** V%pdXM5  
* @param data )gNHD?4x  
* @param j V#W(c_g  
* @param i TA=Ij,z~  
*/ S:] w@$  
private void insertSort(int[] data, int start, int inc) { nMc d(&`N  
int temp; bw{%X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >RxZ-.,a  
} T7YzO,b/   
} VGBL<X  
} 5|:=#Ql*  
>Lanuv)O  
} `xkJ.,#Io  
kTG}>I  
快速排序: n<7#?X7  
M`umfw T  
package org.rut.util.algorithm.support; H7)(<6b,z  
^HHJ.QR  
import org.rut.util.algorithm.SortUtil; =5_8f  
LX j Tqp'  
/** ?x]T &S{  
* @author treeroot <;x+ ?j  
* @since 2006-2-2 dL")E|\\k  
* @version 1.0 ~s{$&N  
*/ oZ%t!Fl1  
public class QuickSort implements SortUtil.Sort{ '<m[  
9Dd/g7  
/* (non-Javadoc) }6eWdm!B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n$}c+1   
*/ a2iaP  
public void sort(int[] data) { jHB,r^:'  
quickSort(data,0,data.length-1); bdqo2ZO  
} p`{9kH1me  
private void quickSort(int[] data,int i,int j){ $,icKa   
int pivotIndex=(i+j)/2; [HIg\N$I8C  
file://swap k+-u 4W   
SortUtil.swap(data,pivotIndex,j); 6R@ v>}  
G\TyXq_4  
int k=partition(data,i-1,j,data[j]); 8Md*9E#J("  
SortUtil.swap(data,k,j); <"CG%RGP  
if((k-i)>1) quickSort(data,i,k-1); GVY_u@6   
if((j-k)>1) quickSort(data,k+1,j); cX1"<fD o  
9n!3yZVSe  
} z;'"c3qG8  
/** RKIqg4>E  
* @param data QsI>_<r  
* @param i sBF>a|  
* @param j bQ0m=BzF  
* @return [m!\ZK  
*/ kvSSz%R~  
private int partition(int[] data, int l, int r,int pivot) { 05nG |  
do{ ? _[gs/i}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rMpb  
SortUtil.swap(data,l,r); )0PUK9  
} ;wDcYs  
while(l SortUtil.swap(data,l,r); ^`=Z=C$fj  
return l; G?=X!up(  
} hig^ovF  
=5^L_, 4c2  
} ~mK9S^[  
KWy4}7a@,s  
改进后的快速排序: MsX`TOyO!  
E'Egc4Z2=l  
package org.rut.util.algorithm.support; x1+8f2[  
_V6;`{$WK  
import org.rut.util.algorithm.SortUtil; F:IG3 @  
HnioB=fc  
/** O|%><I?I  
* @author treeroot ~b8U#'KD  
* @since 2006-2-2 }RDhI1x[mk  
* @version 1.0 r6 ,5&`&  
*/ q(!191@C(  
public class ImprovedQuickSort implements SortUtil.Sort { 7Y @ &&  
athU  
private static int MAX_STACK_SIZE=4096; qN+ngk,:  
private static int THRESHOLD=10; !K(0)~u  
/* (non-Javadoc) ]_|qv1K6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hV'JTU]H  
*/ #12PO q  
public void sort(int[] data) { yZ6560(q  
int[] stack=new int[MAX_STACK_SIZE]; A#2 Fd7&  
n`0}g_\q  
int top=-1; 3boINmX  
int pivot; +Medu?K `  
int pivotIndex,l,r; |nz,srr~  
398}a!XM  
stack[++top]=0; gjL>FOe8u  
stack[++top]=data.length-1; lXW.G  
WZ@nuK.39T  
while(top>0){ #\@*C=  
int j=stack[top--]; E;D9S  
int i=stack[top--]; e][U ;  
: B$ d  
pivotIndex=(i+j)/2; GJ ZT~  
pivot=data[pivotIndex]; QF'N8Kla  
[P)HVFy|l  
SortUtil.swap(data,pivotIndex,j); (tx6U.Oy  
9dJARSUuF  
file://partition [)# ,~L3  
l=i-1; J'b *^K  
r=j; 7DKbuUK  
do{ W84JB3p  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y&-j NOKLM  
SortUtil.swap(data,l,r); EmVE<kY .  
} "l n(EvW  
while(l SortUtil.swap(data,l,r); VCNg`6!x  
SortUtil.swap(data,l,j); L!c7$M5xJ  
b!5W!vcK  
if((l-i)>THRESHOLD){ gI'4g ZH  
stack[++top]=i; sR +=<u1  
stack[++top]=l-1; vM1f-I-  
} . sgV  
if((j-l)>THRESHOLD){ 4mQ:i7~  
stack[++top]=l+1; 29 Yg>R!/  
stack[++top]=j; ^yu0Veypy  
} ~H7m7  
.1[K\t)2  
} (.m0hN!~u  
file://new InsertSort().sort(data); oh:g  
insertSort(data); xQ^zX7  
}  $3W[fC  
/** ygWo9?  
* @param data oOmPbAY  
*/ qOV#$dkY  
private void insertSort(int[] data) { ,N?~je.  
int temp; #fRhG^QKp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NK~j>>^;v  
} "qIO,\3T  
} lBgf' b3$  
} Q(T)s  
y5RcJM  
} Tc T%[h!  
*y='0)[BD  
归并排序: #K"jtAm  
!WR(H&uBr\  
package org.rut.util.algorithm.support; 0.~QA+BD:S  
r-9P&*1  
import org.rut.util.algorithm.SortUtil; SZzS$6 t  
4T{+R{_Y1  
/** &BFW`5N  
* @author treeroot m@u!frE,  
* @since 2006-2-2 =^|^" b  
* @version 1.0 Zq}w}v  
*/ V; Yl:*  
public class MergeSort implements SortUtil.Sort{ z\sy~DM;>  
8G6PcTqv"  
/* (non-Javadoc) -shS?kV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZXY5Xvt:v  
*/ 8&IsZPq%l  
public void sort(int[] data) { (I IPrW;>  
int[] temp=new int[data.length]; %r=uS.+hrF  
mergeSort(data,temp,0,data.length-1); | Z0?  
} m$ NBGw  
P|!GXkS  
private void mergeSort(int[] data,int[] temp,int l,int r){ `kpX}cKK}  
int mid=(l+r)/2; X2}\i5{  
if(l==r) return ; hJ (Q^Z  
mergeSort(data,temp,l,mid); 1j`-lD  
mergeSort(data,temp,mid+1,r); Q&opnvN  
for(int i=l;i<=r;i++){ lQ<2Vw#Yl  
temp=data; +\fr3@Yc  
} =!*e; L  
int i1=l; j#f+0  
int i2=mid+1; N/p9Ws  
for(int cur=l;cur<=r;cur++){ TUw^KSa  
if(i1==mid+1) osoreo;V^  
data[cur]=temp[i2++]; d(3F:dbk  
else if(i2>r) X*KQWs.  
data[cur]=temp[i1++]; X|TEeE c[L  
else if(temp[i1] data[cur]=temp[i1++]; 9TIyY`2!  
else ,^pM]+NF|  
data[cur]=temp[i2++]; %[u6<  
} Kyt.[" p  
} !hrXud=#"  
XI} C|]#  
} GbFLu`Iu  
: ^F+m QN  
改进后的归并排序: 5x(`z   
AjKP -[  
package org.rut.util.algorithm.support; J;W(}"cFq  
x%pC.0%  
import org.rut.util.algorithm.SortUtil; g{.>nE^Sc5  
:!Wijdq  
/** I?YTX  
* @author treeroot Dd-;;Y1C  
* @since 2006-2-2 +FfT)8@W  
* @version 1.0 \_Nr7sc\  
*/ peCmb)>Sa  
public class ImprovedMergeSort implements SortUtil.Sort { <H<5E'm  
kT&-:: ^R  
private static final int THRESHOLD = 10; ,24NMv7  
zl F*F8>m  
/* L$=@j_V2  
* (non-Javadoc) ]( V+ qj  
* [R+zzl&Zw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x|d Xa0=N_  
*/ !C * %,Ak  
public void sort(int[] data) { es]\ xw  
int[] temp=new int[data.length]; +0rMv  
mergeSort(data,temp,0,data.length-1); T]Gxf"mK  
} C)~YWx@v  
F1J Sf&8  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1sl^+)z8  
int i, j, k; J]UlCg  
int mid = (l + r) / 2; %_0,z`f  
if (l == r) k_/hgO  
return; IT! a)d  
if ((mid - l) >= THRESHOLD) &I Iw>,,  
mergeSort(data, temp, l, mid); 1mhX3  
else (Z"QHfO'  
insertSort(data, l, mid - l + 1); [HI&>dm=$  
if ((r - mid) > THRESHOLD) .=~beTS'Vo  
mergeSort(data, temp, mid + 1, r); _IuEa\>  
else }YW0?-G.$  
insertSort(data, mid + 1, r - mid); ,Dfq%~:grT  
E1IRb':  
for (i = l; i <= mid; i++) { A ${b]  
temp = data; kq6S`~J^R  
} u*B.<GmN  
for (j = 1; j <= r - mid; j++) { F, Y@  
temp[r - j + 1] = data[j + mid]; b#bdz1@s  
} wUWSW<  
int a = temp[l]; DeE-M"  
int b = temp[r]; #t:]a<3Y2  
for (i = l, j = r, k = l; k <= r; k++) { W7>4-gk  
if (a < b) { Zx,R6@l  
data[k] = temp[i++]; R#i|n< x  
a = temp; e:hkWcV  
} else { DnvJx!#R  
data[k] = temp[j--]; ^wPKqu)^  
b = temp[j]; 3t22KY[`  
} |Ak>kQJ(1z  
} g <^Y^~+E  
} yn<H^c  
Nr=ud QA{  
/** ?jbE3fW  
* @param data Ni*f1[sI<  
* @param l p.^mOkpt  
* @param i CXks~b3SD  
*/ vn|u&}h  
private void insertSort(int[] data, int start, int len) { @GqPU,RO  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4b=hFwr[?  
} fN~kd m.  
} cE> K:3n  
} %^[45e  
} e `zEsLs@  
((^jyQ  
堆排序: 4[a?. .X  
hDJq:g wD  
package org.rut.util.algorithm.support; TU$PAwn=  
|7]7~ 6l  
import org.rut.util.algorithm.SortUtil; Ou</{l/  
' Bb]< L`  
/** Epj  
* @author treeroot J01w\#62pQ  
* @since 2006-2-2 | qtdmm  
* @version 1.0 ";}Lf1M9  
*/ X).UvPZ/  
public class HeapSort implements SortUtil.Sort{ 35z]pn%L  
w]GoeIg({  
/* (non-Javadoc) Dww]D|M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EW*!_|  
*/ H=] )o2 1  
public void sort(int[] data) { !R;P"%PHV  
MaxHeap h=new MaxHeap(); '#$Y :/  
h.init(data); B!GpD@U  
for(int i=0;i h.remove(); F{)YdqQ  
System.arraycopy(h.queue,1,data,0,data.length); +qq,;npi  
} 9 tkj:8_  
&?>h#H222  
private static class MaxHeap{ K];nM}<  
WRU/^g3O@'  
void init(int[] data){ O%5cMz?eU  
this.queue=new int[data.length+1]; sv\'XarM  
for(int i=0;i queue[++size]=data; |0FRKD]  
fixUp(size); t^ L XGQ  
} c_c]0Tm  
} ;tTM3W-h  
'c5#M,G~  
private int size=0; \eF5* {9  
4"1OtBU3  
private int[] queue; D}'g4Ag  
mj5$ 2J  
public int get() { Ol H{!  
return queue[1]; c+?L?s`"  
} },'hhj]O  
6cz%>@  
public void remove() { =2uE\6Fl,  
SortUtil.swap(queue,1,size--); (q`Jef  
fixDown(1); 5r"BavA  
} u\=gps/Z  
file://fixdown 11}sRu/  
private void fixDown(int k) { !Sr^4R+Z  
int j; XRXKO>4q  
while ((j = k << 1) <= size) { )bRe"jxn7  
if (j < size %26amp;%26amp; queue[j] j++; iz]Vb{5n%  
if (queue[k]>queue[j]) file://不用交换 @QI]P{   
break; k1Zu&4C\  
SortUtil.swap(queue,j,k); Oh6_Bci  
k = j; Ntr5Q IPd  
} sj a;NL  
} J7$1+|"  
private void fixUp(int k) { N[X%tf\L]F  
while (k > 1) { rg+28tlDn  
int j = k >> 1; S!.aBAW  
if (queue[j]>queue[k]) #n%?}  
break; nN>D=a"&F  
SortUtil.swap(queue,j,k); >"?HbR9  
k = j; $_ub.g|  
} '7o'u]  
} @_ ^QBw0  
%Y%+K5;AZ  
} }u cqzdk#2  
iKv`[k  
} C>7Mx{!H  
fHvQ9*T  
SortUtil: f/Km$#xOr  
jENarB^As  
package org.rut.util.algorithm; cd{3JGg B  
8yz A W&q  
import org.rut.util.algorithm.support.BubbleSort; GDw4=0u-  
import org.rut.util.algorithm.support.HeapSort; )|,-l^lC  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ht? u{\p@  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5&7)hMppI  
import org.rut.util.algorithm.support.InsertSort; Q>7#</i\.  
import org.rut.util.algorithm.support.MergeSort; $de_>  
import org.rut.util.algorithm.support.QuickSort; (Tp+43v  
import org.rut.util.algorithm.support.SelectionSort; RtH[OZu(8  
import org.rut.util.algorithm.support.ShellSort; %(;jx  
C&D]!Zv F  
/** W093rNF~  
* @author treeroot d=WC1"  
* @since 2006-2-2 qyl~*r*  
* @version 1.0 ]_I<-}?;  
*/ _/ j44q  
public class SortUtil { 5Zs"CDU  
public final static int INSERT = 1; 8B;`9?CI  
public final static int BUBBLE = 2; 7p3 ;b"'  
public final static int SELECTION = 3; =bs4*[zq  
public final static int SHELL = 4; F3jrJ+nJ  
public final static int QUICK = 5; XOa<R  
public final static int IMPROVED_QUICK = 6; &=fBqod  
public final static int MERGE = 7; /eDah3%d  
public final static int IMPROVED_MERGE = 8; qM3^)U2  
public final static int HEAP = 9; X0b :Oiw  
-`wGF#}y(=  
public static void sort(int[] data) { U@yrqT@;AU  
sort(data, IMPROVED_QUICK); Rg)\o(J  
} yGgHd=?  
private static String[] name={ `}k!SqG  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <kn#`w1U'  
}; LW_ Y  
FMY r6/I  
private static Sort[] impl=new Sort[]{ oV ?tp4&  
new InsertSort(), ~cSC-|$^&  
new BubbleSort(), !Y=s_)X  
new SelectionSort(), o;FjpZ  
new ShellSort(), :eS7"EG{3  
new QuickSort(), FePJ8  
new ImprovedQuickSort(), n-,~Bp [  
new MergeSort(), ]@l~z0^|[_  
new ImprovedMergeSort(), L6BHh_*E  
new HeapSort() Q !5Tw  
}; NF0IF#;a  
7qon:]b4  
public static String toString(int algorithm){ U"-mLv"|  
return name[algorithm-1];  &N0W!  
} Mp75L5  
Wr`=P,  
public static void sort(int[] data, int algorithm) { d|on y  
impl[algorithm-1].sort(data); :*t v`:;p  
} WP32t@  
IaE};8a8  
public static interface Sort { OW)8Z 60  
public void sort(int[] data); aO "JT  
} 6BW-AZc  
rd]HoFE  
public static void swap(int[] data, int i, int j) { r!Eo8C  
int temp = data; ( NjX?^  
data = data[j]; _kH#{4`Hw  
data[j] = temp; )[9L|o5D  
} {0QD-b o  
} {xEX_$nv  
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