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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。 D4yJ:ATO&  
插入排序: QD LXfl/  
0 &U,WA  
package org.rut.util.algorithm.support; JMu|$"o&{  
^4Ra$<  
import org.rut.util.algorithm.SortUtil; U,C L*qTF  
/** #q~SfG  
* @author treeroot 1<]g7W  
* @since 2006-2-2 N2_j[Pe  
* @version 1.0 (NUk{MTX  
*/ f\"Qgn  
public class InsertSort implements SortUtil.Sort{ oK h#th  
7?K?-Oj  
/* (non-Javadoc) wTFM:N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'kc_OvVA  
*/ )5lo^Qb  
public void sort(int[] data) { b=a&!r5M  
int temp; xm>RLx}9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DCb\ =E  
} tRYMK+  
} >9W ;u`  
} =:a H2T*  
eL9 RrSXz  
} Q3#- q> ;7  
@oC8:  
冒泡排序: 88}c+V+N!  
o #{D;'  
package org.rut.util.algorithm.support; KO(+%>^R  
XM3N>OR.  
import org.rut.util.algorithm.SortUtil; 4NL Tt K  
"GP!]3t  
/** irCS}Dbw  
* @author treeroot CjM+%l0MW  
* @since 2006-2-2 DO(-)i zC  
* @version 1.0 %4U;Rdq&Ud  
*/ hS&,Gm`^  
public class BubbleSort implements SortUtil.Sort{ L)VEA8}  
)((Jnm D  
/* (non-Javadoc) 0U]wEz*b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #NVtZs!V/  
*/ 38! $9)  
public void sort(int[] data) { k,M%/AXd  
int temp; @`aR*B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cu|gM[  
if(data[j] SortUtil.swap(data,j,j-1); $rDeI-)S  
} D%umL/[]  
} rX6"w31  
} ^~(vP:  
} K1Nhz'^=D  
&R/)#NAp  
} w4pU^&O  
\`o+Le+%  
选择排序: & |u  
OA2<jrGB!  
package org.rut.util.algorithm.support; } ab@Nd$  
PygT_-3z{  
import org.rut.util.algorithm.SortUtil; y]9 3z!#Z  
m/n_e g  
/** dg 0`0k  
* @author treeroot `pzp(\lc  
* @since 2006-2-2 e0"R7a  
* @version 1.0 ,St#/tu  
*/ b9[;qqq@'  
public class SelectionSort implements SortUtil.Sort { qSj2=dlW  
_*6nTSL  
/* r_T\%  
* (non-Javadoc) ZAzn-n  
* T F&xiL^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z}.N4 /  
*/ wly#|  
public void sort(int[] data) { |$#u~<r_ w  
int temp; Ol:&cX3G  
for (int i = 0; i < data.length; i++) { KDgJ~T  
int lowIndex = i; F{ J>=TC  
for (int j = data.length - 1; j > i; j--) { Wm4@+ }  
if (data[j] < data[lowIndex]) { -Ep cX!i  
lowIndex = j; npg.*I/>  
} g5R2a7  
} "JAYTatO7H  
SortUtil.swap(data,i,lowIndex); p*F&G=ZE  
} n>jb<uz  
} "T@9]>6.f  
S*],18z?  
} !>-cMI6E  
0P sp/H%  
Shell排序: v0|A N  
fM?HZKo  
package org.rut.util.algorithm.support; 0/S|P1!b  
t>f<4~%MJ  
import org.rut.util.algorithm.SortUtil; I\PhgFt@O  
E"bYl3  
/** WM NcPHcj  
* @author treeroot lz@fXaZM  
* @since 2006-2-2 ZO{uG(u  
* @version 1.0 zx'G0Z9]  
*/ -EFtk\/  
public class ShellSort implements SortUtil.Sort{ 64>E|w  
:j9{n ,F  
/* (non-Javadoc) [Rw0']i`4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Ek(. ["  
*/ :\L{S  
public void sort(int[] data) { VdQ}G!d  
for(int i=data.length/2;i>2;i/=2){ +4f>njARIb  
for(int j=0;j insertSort(data,j,i); Bvzl* &?  
} q$e2x=?  
} EcrM`E#kaZ  
insertSort(data,0,1); u_s  
} v'Gqdd-#)  
Zalgg/.  
/** Kvv&# eO\  
* @param data ;$l!mv 7  
* @param j L=3^A'|  
* @param i @26H;  
*/ CFAz/x@%  
private void insertSort(int[] data, int start, int inc) { G+ PBV%gE[  
int temp; 2]C`S,)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m `~/]QQ  
} mZ3i#a4  
} 6c>t|=Ss(  
} 1HL}tG?+#  
lZZ4 O(  
} Cq;t;qN,nQ  
!=--pb  
快速排序: GM|gm-t<@  
gBUtv|(@>[  
package org.rut.util.algorithm.support; *O,\/aQ+  
pbKDtqSn z  
import org.rut.util.algorithm.SortUtil; lb5Y$ZC  
&\4AvaeA8y  
/** R<lj$_72Q  
* @author treeroot <Rob.x3  
* @since 2006-2-2 &e@2zfl7  
* @version 1.0 mza1Q~<  
*/ r<cyxR~  
public class QuickSort implements SortUtil.Sort{ A;m)/@  
ViQxO UE  
/* (non-Javadoc) /ZHuT=j1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l;}D| 6+_W  
*/ ]=of=T:  
public void sort(int[] data) { ==`K$rM  
quickSort(data,0,data.length-1); d$8rzd  
} sguE{!BO  
private void quickSort(int[] data,int i,int j){ +b1(sk=4z  
int pivotIndex=(i+j)/2; U0t/(Jyg  
file://swap ?~uTbNR  
SortUtil.swap(data,pivotIndex,j); B2:6=8<  
1U.se` L  
int k=partition(data,i-1,j,data[j]); sy+1xnz  
SortUtil.swap(data,k,j); / *xP`'T  
if((k-i)>1) quickSort(data,i,k-1); JVf8KHDj  
if((j-k)>1) quickSort(data,k+1,j); Brr{iBz*"  
&F9BaJ  
} u*Z>&]W_  
/** 7'Y 3T[  
* @param data R8P7JY[h  
* @param i +'Pl?QyH  
* @param j C%t~?jEK~^  
* @return o $oW-U  
*/  wX@&Qv  
private int partition(int[] data, int l, int r,int pivot) { [?iA`#^d  
do{ $wH{snX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b>=MG8  
SortUtil.swap(data,l,r); ^ '!]|^  
} "8%B (a 5A  
while(l SortUtil.swap(data,l,r); hH[UIe  
return l; xK9"t;!C&  
} ))|Wm}  
\.2?951}  
} \k/ N/&;  
oh:q:St  
改进后的快速排序: P66{l^  
!ccKbw)J#  
package org.rut.util.algorithm.support; Re-~C[zwT  
F&.iY0Pt  
import org.rut.util.algorithm.SortUtil; I=6\z^:  
s$css{(ek  
/** ,@jRe&6  
* @author treeroot :TJv<NZi'  
* @since 2006-2-2 <8yzBp4gZ  
* @version 1.0 K@Q_q/(%;  
*/ H_m(7@=  
public class ImprovedQuickSort implements SortUtil.Sort { ]c]rIOTN  
T`7;Rl'Q  
private static int MAX_STACK_SIZE=4096; /~NsHStn  
private static int THRESHOLD=10; _*h,,Q  
/* (non-Javadoc) eU 'DQp*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `G&W%CHB  
*/ l-xKfp`  
public void sort(int[] data) { b|U&{I>TH  
int[] stack=new int[MAX_STACK_SIZE];  }tv%  
9%WUh-|'p  
int top=-1; !c[(#g  
int pivot; MKLntX  
int pivotIndex,l,r; $, 4;_4t  
5n! V^ !  
stack[++top]=0; 3US}('  
stack[++top]=data.length-1; S%<RV6{aiM  
\.y|=Ql_u  
while(top>0){ 0H,1"~,w]  
int j=stack[top--]; {%5k1,/(  
int i=stack[top--]; jm0J)Z_"nr  
*#-X0}'s  
pivotIndex=(i+j)/2; RX8$&z  
pivot=data[pivotIndex]; 4V9DPBh  
WL$Ee=  
SortUtil.swap(data,pivotIndex,j); By(:%=.  
a5ZU"6Hi  
file://partition =G3O7\KmH  
l=i-1; S453oG"  
r=j; l?v`kAMR  
do{ &cztUM(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,}2yxo;i  
SortUtil.swap(data,l,r); H$TYp  
} OY7\*wc:  
while(l SortUtil.swap(data,l,r); x=Z\c,@O  
SortUtil.swap(data,l,j); n_\V G[f  
U<{8nMB  
if((l-i)>THRESHOLD){ ?nJ7lLQA  
stack[++top]=i; ;cd{+0  
stack[++top]=l-1; J/S 47J~  
} _Qg^>}]A1  
if((j-l)>THRESHOLD){ \PU3{_G]  
stack[++top]=l+1; 0&T0Ls#4  
stack[++top]=j; 2-5AKm@K  
} nlJ~Q_E(  
o:B?gDM  
} . [DCL  
file://new InsertSort().sort(data); /3->TS  
insertSort(data); _yY(&(]#  
} XlIRedZ{  
/** .r[b!o^VR  
* @param data 6}wXNTd  
*/ H~E(~fl  
private void insertSort(int[] data) { `RDl k  
int temp; CAyV#7[0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EM]~yn!+  
} S'M=P_-7  
} !c-Ie~GIT  
} Sp$~)f'  
834(kw+#9  
} E6a$c`H@?  
iL(rZT&^  
归并排序: m<)0 XE6w  
Z&FC:4!!  
package org.rut.util.algorithm.support; ( ,1}P  
b:3n)-V{u  
import org.rut.util.algorithm.SortUtil; v(D{_  
Au jvKQ(  
/** Y,EReamp  
* @author treeroot dd1m~Gm  
* @since 2006-2-2 n ^P=a'+  
* @version 1.0 \hN\px  
*/ dK'?<w$  
public class MergeSort implements SortUtil.Sort{ 9k8ftxB^  
-BUxQ8/,  
/* (non-Javadoc) %^s;{aN*!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aiVd^(  
*/ q<` YJ,  
public void sort(int[] data) { N1$lG? )+  
int[] temp=new int[data.length]; 'U ',9  
mergeSort(data,temp,0,data.length-1); #PUvrA2Zl  
} Uf )?sz  
}&#R-eQT  
private void mergeSort(int[] data,int[] temp,int l,int r){ =!7k/n';  
int mid=(l+r)/2; tu\;I{ h=0  
if(l==r) return ; 0STtwfTr:  
mergeSort(data,temp,l,mid); 'teToE<i  
mergeSort(data,temp,mid+1,r); `&$"oW{HW  
for(int i=l;i<=r;i++){ )1ia;6}  
temp=data; 7[5g_D t  
} *0]E4]ZO  
int i1=l; x&9}] E^<  
int i2=mid+1; hR,VE'A  
for(int cur=l;cur<=r;cur++){ }Kc[pp|9<  
if(i1==mid+1) a@`15O:  
data[cur]=temp[i2++]; f`'?2  
else if(i2>r) !xmvCH=2  
data[cur]=temp[i1++]; WccTR aq  
else if(temp[i1] data[cur]=temp[i1++]; 3a PCi>i!_  
else cPA-EH  
data[cur]=temp[i2++]; Pk/{~!+ $  
} *A C){M  
} dr0<K[S_  
<>/0 ;J1<  
} PD$XLZ  
z =1 J{]  
改进后的归并排序: 'qcLK>E  
nEu,1  
package org.rut.util.algorithm.support; h|OqM:J;  
-1).'aJ^  
import org.rut.util.algorithm.SortUtil; K3*8JF7_F  
0<*R 0  
/** q[p+OpA  
* @author treeroot e! V`cg0  
* @since 2006-2-2 [uCW8:e  
* @version 1.0 O="# yE)  
*/ E!<w t  
public class ImprovedMergeSort implements SortUtil.Sort { QA?e2kd  
;;rEv5 /  
private static final int THRESHOLD = 10; 5&a4c"fU  
M{I8b<hY  
/* ipU,.@~#  
* (non-Javadoc) Eukj2 a  
* )RA$E`!b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]la8MaZ<  
*/ J J@O5  
public void sort(int[] data) { OZ 4uk.)  
int[] temp=new int[data.length]; c{4C4'GD  
mergeSort(data,temp,0,data.length-1); D?;8bI%"  
} 2)}ic2]pn  
l M ]n  
private void mergeSort(int[] data, int[] temp, int l, int r) { &}}c>]m  
int i, j, k; gN#&Ag<?  
int mid = (l + r) / 2; w$I<WS{J:Z  
if (l == r) l`c&nf6  
return; ,b;eU[!]  
if ((mid - l) >= THRESHOLD) BeP]M1\?>  
mergeSort(data, temp, l, mid); q#9JJWSs  
else >7%Gd-;l  
insertSort(data, l, mid - l + 1); CVfQ  
if ((r - mid) > THRESHOLD) $1<V'b[E  
mergeSort(data, temp, mid + 1, r); +Hx$ABH  
else [1{#a {4  
insertSort(data, mid + 1, r - mid); MX!t/&X(n  
1_JtD|Jy  
for (i = l; i <= mid; i++) { df@IC@`pB  
temp = data; fNb2>1  
} heQ<%NIA"  
for (j = 1; j <= r - mid; j++) { {p J{UJKv?  
temp[r - j + 1] = data[j + mid]; XBQ]A89G  
} ,iKEIxA!  
int a = temp[l]; dXr=&@ 1  
int b = temp[r]; r ;:5P%:  
for (i = l, j = r, k = l; k <= r; k++) { !DsKa6Zj  
if (a < b) { =xwA'D9]  
data[k] = temp[i++]; ^M?O  
a = temp; / J 3   
} else { U~!yGjF  
data[k] = temp[j--]; %|mRib|<C  
b = temp[j]; hE.NW  
} i'Vrx(y3  
} \uxDMKy  
} u&MlWKCi  
Fy1@B(V%  
/** (!kd9uV  
* @param data bvdAOvxChW  
* @param l pqmb&"l  
* @param i .b'o}DLa  
*/ ygt7;};!  
private void insertSort(int[] data, int start, int len) { tXj28sh$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); awP ']iE  
} 4o7(cP  
}  N7%iz+  
} EB8=*B8  
} f#~X4@DH`  
^Mw>'*5^  
堆排序: }.md$N_F  
nNuv 0  
package org.rut.util.algorithm.support; Ay?;0w0  
T}DP35dBzE  
import org.rut.util.algorithm.SortUtil; r9!jIkILz  
'N1_:$z@(  
/** }yM /z  
* @author treeroot :N!Fe7H,  
* @since 2006-2-2 =.vc={_ ?  
* @version 1.0 Z^t"!oY  
*/ H/!_D f  
public class HeapSort implements SortUtil.Sort{ $`7cs}#  
ZJUTtiD  
/* (non-Javadoc) j ys1Ki  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s$g"6;_\  
*/ h<KE)^).  
public void sort(int[] data) { U)IW6)q  
MaxHeap h=new MaxHeap(); qRXQL"Pe_l  
h.init(data); l :sZ  
for(int i=0;i h.remove(); Z}#, E ;  
System.arraycopy(h.queue,1,data,0,data.length); Oc\Bu6F  
} .&Uu w  
;r(hZ%pD  
private static class MaxHeap{ {Rc!S? 8  
FPM@%U  
void init(int[] data){ 6Y!hz7D  
this.queue=new int[data.length+1]; 1J8okBhZ  
for(int i=0;i queue[++size]=data; 8?ig/HSt2  
fixUp(size); C@!C='b,  
} Z";~]]$!Y  
} K9JW&5Q  
x!6&)T?!n  
private int size=0; K$>C*?R  
H.\gLIr  
private int[] queue; C>%2'S^.b  
#$!(8>YJ  
public int get() { kpc3l[.A  
return queue[1]; H JFt{tq2  
} 8Ar5^.k  
rn1^6qy)  
public void remove() { H>8B$fi)$  
SortUtil.swap(queue,1,size--); ?m&?BsW$)  
fixDown(1); /S}0u}jID?  
} L2"fO  
file://fixdown 1.7tXjRd+  
private void fixDown(int k) { T KpX]H`  
int j; ^,@!L-<~(b  
while ((j = k << 1) <= size) { SM>V o+  
if (j < size %26amp;%26amp; queue[j] j++;  _N`:NOM  
if (queue[k]>queue[j]) file://不用交换 :Ny.OA  
break; *5( h,s3&  
SortUtil.swap(queue,j,k); /mMRV:pd  
k = j; N[$bP)h7  
} 5LVhq[}mP  
} d*7nz=0&$  
private void fixUp(int k) { L<HJ!  
while (k > 1) { S\7-u\)  
int j = k >> 1; 8K qrB!  
if (queue[j]>queue[k]) " P A:  
break; b21c} rI3  
SortUtil.swap(queue,j,k); aAHx^X^  
k = j; OnO56,+S^  
} <~9z.v7  
} oj.f uJD  
D ==H{c1F  
} IooAXwOF  
 3*@ sp  
} r^3QDoy  
Xg>nb1e  
SortUtil: R"Q=U}?$  
\x JGR!  
package org.rut.util.algorithm; .h)o\6Wq  
,xA`Fu9^  
import org.rut.util.algorithm.support.BubbleSort; 0cV=>|b>;  
import org.rut.util.algorithm.support.HeapSort; gg ;&a(  
import org.rut.util.algorithm.support.ImprovedMergeSort; Rs@2Pe$3  
import org.rut.util.algorithm.support.ImprovedQuickSort; J7q]|9Hus|  
import org.rut.util.algorithm.support.InsertSort; `% sKF  
import org.rut.util.algorithm.support.MergeSort; (n'Mf  
import org.rut.util.algorithm.support.QuickSort; MCN}p i  
import org.rut.util.algorithm.support.SelectionSort; 9|yn{4E  
import org.rut.util.algorithm.support.ShellSort; sjBP#_lW  
b&k !DeE  
/** &A=>x  
* @author treeroot i7h!,vaK  
* @since 2006-2-2 KiXXlaOs  
* @version 1.0 _YVp$aKDR  
*/ #K A,=J  
public class SortUtil { O+vuv,gNi  
public final static int INSERT = 1; ]Lg$p  
public final static int BUBBLE = 2; N?`-$C ]  
public final static int SELECTION = 3; CRy;>UI  
public final static int SHELL = 4; r+8%oWj  
public final static int QUICK = 5; ]Bo !v*12  
public final static int IMPROVED_QUICK = 6; wOH$S=Ba5,  
public final static int MERGE = 7; /A3tY"Vn  
public final static int IMPROVED_MERGE = 8; X}?`G?'  
public final static int HEAP = 9; #h'F6  
j6wdqa9!~  
public static void sort(int[] data) { 5&5 x[S8  
sort(data, IMPROVED_QUICK); l4c9.'6  
} ur\v[k=  
private static String[] name={ ?+Sjt  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D[) Z$+D4f  
}; c`]_Q1'30w  
{Lj]++`fB]  
private static Sort[] impl=new Sort[]{ k@1\ULo  
new InsertSort(), NFT&\6!o  
new BubbleSort(),  M1>< K:  
new SelectionSort(), 9!hiCqA&  
new ShellSort(), _~m@ SI  
new QuickSort(), #K1VPezN  
new ImprovedQuickSort(), v]CH L# |  
new MergeSort(), s{v!jZ  
new ImprovedMergeSort(), AH$D./a  
new HeapSort() [d="94Ab  
}; FX QUj&9  
t!MGSB~  
public static String toString(int algorithm){ %u"3&kOV  
return name[algorithm-1]; 3D3/\E#'o  
} w i,}sEoM  
yyZV/ x~  
public static void sort(int[] data, int algorithm) { $ZSjq  
impl[algorithm-1].sort(data); -eH5s3:A  
} \W5fcxf  
OZ2gIK  
public static interface Sort { n_[;2XQQ  
public void sort(int[] data); d+ P<nI/|  
} s)HLFdis@  
4(5NHsvp  
public static void swap(int[] data, int i, int j) { %5|awWo_?  
int temp = data; qx3@]9  
data = data[j]; @ i $jyc  
data[j] = temp; 2y/|/IW=  
} 29R_?HBH  
} V gLnpPOQ  
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