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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。 ('k;Ikut  
插入排序: =(\ /+ 0-[  
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package org.rut.util.algorithm.support; $M%<i~VXe&  
qQ\&]  
import org.rut.util.algorithm.SortUtil; b {fZU?o  
/** JAPiR=  
* @author treeroot pxC:VJ;  
* @since 2006-2-2 w}2;f=  
* @version 1.0 Qb "\j  
*/ [!Uzw 2  
public class InsertSort implements SortUtil.Sort{ o[<lTsw<  
"eKNk  
/* (non-Javadoc) .A 12Co  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6,Aj5jG  
*/ #a7 Wx}  
public void sort(int[] data) { 4rX jso|  
int temp; < zUU`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,]CZ(q9-  
} 2Cy">Exl  
} Py?EA*(d#  
} 4-ijuqjN  
7,vvL8\NHu  
} yxv]G6  
U9N1 )3/u  
冒泡排序: @|A w T  
B^8]quOH  
package org.rut.util.algorithm.support; ,UOAGu<_gb  
#p<1@,  
import org.rut.util.algorithm.SortUtil; DdAs]e|D[  
LHy-y%?i  
/** OXT'$]p.*  
* @author treeroot lawjGI  
* @since 2006-2-2 bBwMx{iNNz  
* @version 1.0 }vzZWe  
*/ J2tD).G  
public class BubbleSort implements SortUtil.Sort{ 4i<V^go"  
ZAK NyA2  
/* (non-Javadoc) zpPzXQv]/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =^nb-9.  
*/ SM3qPlsF  
public void sort(int[] data) { P1 \:hh  
int temp; ;0R|#9oX_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1w30Vj2<  
if(data[j] SortUtil.swap(data,j,j-1); 8[2.HM$Y  
} 4 VPJv>^  
} a?^xEye  
} [xaglZ9HNo  
} IdY\_@$ v  
Kr;7~`$[  
} /3]b!lFZZ  
 G{4~{{tI  
选择排序: D7'P^*4_B  
RU r0K#]  
package org.rut.util.algorithm.support; >pS @;t'  
*F ya qJ)  
import org.rut.util.algorithm.SortUtil; Y(:.f-Du  
,F4 _ps?(  
/** n aQ0TN,  
* @author treeroot ;'\#+GZ9p  
* @since 2006-2-2 ,{KjVv<  
* @version 1.0 NZj_7j|o9  
*/ {{3n">s}:  
public class SelectionSort implements SortUtil.Sort { M=HP!hn  
%cPz>PTW@  
/* vmV<PK-  
* (non-Javadoc) #5Zf6w  
* #<^ngoOj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Obd};&6Q  
*/ ."8bW^:  
public void sort(int[] data) { zmREzP#X  
int temp; Y<A593  
for (int i = 0; i < data.length; i++) { Wa/&H$d\u@  
int lowIndex = i; CB7 6  
for (int j = data.length - 1; j > i; j--) { aa:97w~s0  
if (data[j] < data[lowIndex]) { 9/La _ :K  
lowIndex = j; ,g2oqq ?  
}  :RYh@.  
} cqr4P`Oj  
SortUtil.swap(data,i,lowIndex); Z$8 X1(o  
} f/_RtOSw  
} 6" s}<  
z x7fRd$  
} A;pVi;7  
evbqBb21b  
Shell排序: 6$d3Ap@Gl  
f1Ak0s,zrc  
package org.rut.util.algorithm.support; OS X5S:XS  
G^Z SQ!  
import org.rut.util.algorithm.SortUtil; ws{2 0  
kQr\ktN\  
/** ~y#jq,i/  
* @author treeroot [sM~B  
* @since 2006-2-2 p6qza @  
* @version 1.0 q- U/JC  
*/ _N.N?>  
public class ShellSort implements SortUtil.Sort{ Z#n!=k TTm  
q#8$@*I  
/* (non-Javadoc) 7y4!K$c$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O Oa}+^-j  
*/ ~AD%aHR  
public void sort(int[] data) { UuNcBzB2d  
for(int i=data.length/2;i>2;i/=2){ %T.4Aj  
for(int j=0;j insertSort(data,j,i); ]cz*k/*0  
} ;au-NY  
} *?k~n9n5U  
insertSort(data,0,1); ^,Paih 2  
} HzW`j"\  
E(5'vr0  
/** 2>E.Q@c  
* @param data \= M*x  
* @param j ur'a{BI2R  
* @param i $oefG}h2  
*/ d+5KHfkK  
private void insertSort(int[] data, int start, int inc) { Ab]`*h\U  
int temp; 4FmT.P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D6 2xC5  
} YS}uJ&WoF  
} :{iS0qJ  
} NH?q/4=I0W  
XO*|P\#^  
} CM; r\,o  
E~=`Ac,G2  
快速排序: B&l5yI b  
,ux?wa+  
package org.rut.util.algorithm.support; *c\:ogd  
NJEubC?  
import org.rut.util.algorithm.SortUtil; X8TwMt  
+="?[:  
/** >680}\S  
* @author treeroot 3SRz14/W_R  
* @since 2006-2-2 gm**9]k^{  
* @version 1.0 83"Vh$&  
*/ )qGw!^8  
public class QuickSort implements SortUtil.Sort{ Kh)SgJ3B@  
,a N8`M  
/* (non-Javadoc) 6}aIb.j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wnaT~r@U'  
*/ 3JB?G>\!  
public void sort(int[] data) { U5uO|\+)  
quickSort(data,0,data.length-1); @M[t|  
} MHs2UN  
private void quickSort(int[] data,int i,int j){ 3` ov?T(H  
int pivotIndex=(i+j)/2; 3},0b8};  
file://swap mnK SO  
SortUtil.swap(data,pivotIndex,j); ,KXS6:1%5Y  
_7j-y 9V  
int k=partition(data,i-1,j,data[j]); t'msgC6=>u  
SortUtil.swap(data,k,j); o6JCy\Bx  
if((k-i)>1) quickSort(data,i,k-1); Lh0qB)>  
if((j-k)>1) quickSort(data,k+1,j); 9oOr-9t3  
B}Q.Is5  
} D4e*Wwk  
/** s-V5\Lip,  
* @param data 9#K,@X5 j  
* @param i ~x:\xQti  
* @param j {+CW_ce  
* @return D%L}vugxK  
*/ inO)Y]|f  
private int partition(int[] data, int l, int r,int pivot) { huj 6Ysr  
do{ I9xQ1WJc`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JI TQ3UL:W  
SortUtil.swap(data,l,r); (;RmfE'PX  
} 1P (5+9"s  
while(l SortUtil.swap(data,l,r); jH+ddBVA  
return l; OEz'&))J  
} LxWnPi ^  
cg16|  
} n< npJ*  
T$ <l<.Qd  
改进后的快速排序: JmHEYPt0  
PL;PId<9w  
package org.rut.util.algorithm.support; #\15,!*a=  
drr W?U  
import org.rut.util.algorithm.SortUtil; 05]y*I  
.Ux bwTup  
/** `zD]*i(  
* @author treeroot 6Vr:?TI7  
* @since 2006-2-2 T8nOb9Nrj  
* @version 1.0 dMo456L  
*/ *V@>E2@  
public class ImprovedQuickSort implements SortUtil.Sort { _!vxX ]  
A1VbqA  
private static int MAX_STACK_SIZE=4096; K9{]v=#I  
private static int THRESHOLD=10; '@~\(SH  
/* (non-Javadoc) ^T(v4'7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cV=0)'&<`_  
*/ qnFi./  
public void sort(int[] data) { "x;|li3;  
int[] stack=new int[MAX_STACK_SIZE]; ]/G~ L  
qfRsp rRI"  
int top=-1; `7.(dn>WL0  
int pivot; BZ2frG\0&I  
int pivotIndex,l,r; PubO|Mf  
Me*woCos'  
stack[++top]=0; ]3u$%v c  
stack[++top]=data.length-1; d7g3VF<j  
S6Er# )k  
while(top>0){ }f/xMp-Y  
int j=stack[top--]; ],!7S"{97  
int i=stack[top--]; puv/+!q  
2u B66i  
pivotIndex=(i+j)/2; VLLE0W _]  
pivot=data[pivotIndex]; #Cj$;q{!  
TGSUbBgU  
SortUtil.swap(data,pivotIndex,j); 71g\fGG\  
=_\+6\_  
file://partition {pzu1*  
l=i-1; ,PmQ}1kGW  
r=j; [xm{4Ba2X  
do{ be@\5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [{K   
SortUtil.swap(data,l,r); }DCR(p rD  
} PO$ OXw  
while(l SortUtil.swap(data,l,r); S2^Ckg  
SortUtil.swap(data,l,j); 0=WZ 8|R  
W*S !}ZT`  
if((l-i)>THRESHOLD){ 8!{;yz  
stack[++top]=i; +Jf4 5[D   
stack[++top]=l-1; $qvk9 B0E  
} D'nO  
if((j-l)>THRESHOLD){ TB oN8cB}  
stack[++top]=l+1; "s?!1v(v  
stack[++top]=j; *5Mg^}ZC5  
} 1cA4-,YO>  
JA")L0a_  
} KS9 e V  
file://new InsertSort().sort(data); #]g9O?0$  
insertSort(data); Boi?Bt  
} =Wgz\uGJ  
/** \!]Zq#*kH  
* @param data AV t(e6H  
*/ }@ +{;"  
private void insertSort(int[] data) { <`rl[C{  
int temp; =7*k>]o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MDyPwv\  
} T({]fc!c  
} D>HX1LV  
} b `TA2h  
a4B#?p  
} nMBKZ  
Ah|,`0dw  
归并排序: h_SDW %($  
O<H5W|cM  
package org.rut.util.algorithm.support; 8M"0o}wx  
0\Q/$#3  
import org.rut.util.algorithm.SortUtil; b }^ylm  
McXid~  
/** +OM9v3qJ  
* @author treeroot jTDaW8@L  
* @since 2006-2-2 t+2!"Jr  
* @version 1.0 }u CC~ <^  
*/ (|*CVI;  
public class MergeSort implements SortUtil.Sort{ |k3^ eeLk  
IKm_YQ$XOy  
/* (non-Javadoc) IPIas$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (B0tgg^jj,  
*/ LH" CIL2  
public void sort(int[] data) { RTEzcJ>  
int[] temp=new int[data.length]; 6dzY9   
mergeSort(data,temp,0,data.length-1); 6oQSXB@  
} !^,<nP  
G!^}z (Mgi  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5Y#W$Fx($R  
int mid=(l+r)/2; v&8%t 7|  
if(l==r) return ;  /uyZ[=5  
mergeSort(data,temp,l,mid); j3J\%7^i  
mergeSort(data,temp,mid+1,r); mfI>1W(  
for(int i=l;i<=r;i++){ Lwzk<+>w^  
temp=data; +@ j@#~=K  
} zS6oz=  
int i1=l; w<0F-0:8  
int i2=mid+1; qi&;2Yv  
for(int cur=l;cur<=r;cur++){ q>E[)\+y  
if(i1==mid+1) fBi6% #  
data[cur]=temp[i2++]; Zdm7As]  
else if(i2>r) P>i!f!o*I  
data[cur]=temp[i1++]; #7Pnw.s3zz  
else if(temp[i1] data[cur]=temp[i1++]; cGE,3dsF[  
else uE}A-\G  
data[cur]=temp[i2++]; lo!.%PP|  
} ~h<<-c  
} *Bse3%-v  
8}^R jMgI  
} rZK;=\Ot  
(sfy14>\  
改进后的归并排序: ZliJc7lss  
XuY#EJbZ  
package org.rut.util.algorithm.support; >,&@j,?']  
?q %&"  
import org.rut.util.algorithm.SortUtil; Y]33:c_;Mo  
LO&/U4:  
/** G%RL8HU  
* @author treeroot K4{1}bU{>  
* @since 2006-2-2 ?4^8C4  
* @version 1.0 [\rnJ lE  
*/ C;EC4n+s  
public class ImprovedMergeSort implements SortUtil.Sort { Hy9c<X[F9  
\D<w:\P  
private static final int THRESHOLD = 10; L2jjkyX]  
"3r7/>xy  
/* :9O"?FE  
* (non-Javadoc) 0|^/e -^  
* /p PSo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I8s%wY9  
*/ ~:ldGfb|  
public void sort(int[] data) { Z.iQm{bI  
int[] temp=new int[data.length]; ;L{#TC(]J]  
mergeSort(data,temp,0,data.length-1); Pcs62aE  
} yG ,oSp|  
I/HcIBJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { ylo/]pVs  
int i, j, k; %!vgAH4  
int mid = (l + r) / 2; eM1=r:jgE  
if (l == r) 0YApaL+jt  
return; 4L`<xX;:{  
if ((mid - l) >= THRESHOLD) 0]._|Ubn6)  
mergeSort(data, temp, l, mid); 2l YA% n  
else t'.oty=  
insertSort(data, l, mid - l + 1); )}[:.Zg,3/  
if ((r - mid) > THRESHOLD) 3SMb#ce*o  
mergeSort(data, temp, mid + 1, r); j/Dc';,d.(  
else T]fBVA  
insertSort(data, mid + 1, r - mid); TA"4yri=7x  
y. A]un1  
for (i = l; i <= mid; i++) { uh8+Y%V p  
temp = data; OZ9ud ]@\  
} KBO{ g:"  
for (j = 1; j <= r - mid; j++) { ,m08t9F  
temp[r - j + 1] = data[j + mid]; +,H6)'#Z  
} %dN',  
int a = temp[l]; ]JUb;B;Z  
int b = temp[r]; 3ZhB 8 P  
for (i = l, j = r, k = l; k <= r; k++) { .bT+#x  
if (a < b) { p^(gXzW  
data[k] = temp[i++]; 5IsRIz[`TK  
a = temp; YcQ3 :i  
} else { r{Stsha(  
data[k] = temp[j--]; v)VhR2d3  
b = temp[j]; i]L4kh5  
} `H7V['  
} TX%W-J _  
} 4YmN3i  
xwm-)~L4T  
/** zq?Iwyo  
* @param data )RFE< Qcj  
* @param l (K}Md~  
* @param i t622b?w  
*/ \i +=tGY  
private void insertSort(int[] data, int start, int len) { ,M)NC%0X  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~:|qdv%\  
} L+b"d3!G&%  
} _]Ei,Ua  
} R\+O.vX  
} u40k9vh  
,Z"l3~0\  
堆排序: GkutS.2G#  
UhX`BGpM{  
package org.rut.util.algorithm.support; >~% _U+6  
v.aSf`K  
import org.rut.util.algorithm.SortUtil; =u+.o<   
5X'com?T  
/** #f 4"  
* @author treeroot =h"*1`  
* @since 2006-2-2 j1LL[+G-"_  
* @version 1.0 Q%AD6G(7  
*/ ZV=)`E`I|  
public class HeapSort implements SortUtil.Sort{ BU|bo")  
p(5'|eqBV  
/* (non-Javadoc) }k-rOi'jL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 05+uBwH  
*/ :e&P's=  
public void sort(int[] data) { jq4{UW'  
MaxHeap h=new MaxHeap(); KLc<c1BZ  
h.init(data); 'yWv @)  
for(int i=0;i h.remove(); otsINAizgS  
System.arraycopy(h.queue,1,data,0,data.length); ]('isq,P  
} b;[u=9ez  
!7:~"kk  
private static class MaxHeap{ aXSTA ,%  
ZA;wv+hF=  
void init(int[] data){ 05<MsxB"w  
this.queue=new int[data.length+1]; mh4NZ @;  
for(int i=0;i queue[++size]=data; )eFq0+6*)  
fixUp(size); /FZ@Z]Q0G  
} 9tnW:Nw~  
} Ve4!MM@ti  
'WUevPmt  
private int size=0; d45JT?qg&  
_~M*XJ] `  
private int[] queue; h4xRRyK  
#nL&x3  
public int get() { 8bB'[gJ]{  
return queue[1]; S> f8j?n  
} ~D4%7U"dv  
Hm?zMyO.k  
public void remove() { >Ic)RPO9  
SortUtil.swap(queue,1,size--); V9 pKb X  
fixDown(1); CbJ ]}Z  
} ~PT( /L  
file://fixdown |zV-a2K%J  
private void fixDown(int k) { zl: 5_u=T  
int j; x. 7Ln9  
while ((j = k << 1) <= size) { `]^JOw5o  
if (j < size %26amp;%26amp; queue[j] j++; 8"a[W3b  
if (queue[k]>queue[j]) file://不用交换 3N) bJ  
break; 5o~;0K]  
SortUtil.swap(queue,j,k); +fd^$Qd%K  
k = j; io]e]m%  
} +_8*;k@F'  
} FuNc#n>  
private void fixUp(int k) { 0R,?$qM\  
while (k > 1) { C?bq7kD:H  
int j = k >> 1; "8Ud&o  
if (queue[j]>queue[k]) CQo<}}-o  
break; n lsQf3  
SortUtil.swap(queue,j,k); i#t)tM"  
k = j; ,X&lVv#  
} 9S0I<<m  
} ZGHkW9b&  
7_WD)Y2yS  
} R=IZFwr  
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} C@` eYi  
r00 fvZyK  
SortUtil: -{i;!XE$SR  
R 2uo ZA,  
package org.rut.util.algorithm; ocCC63J  
g_G'%{T7  
import org.rut.util.algorithm.support.BubbleSort; vdloh ,  
import org.rut.util.algorithm.support.HeapSort; *KO4H  
import org.rut.util.algorithm.support.ImprovedMergeSort; W'2|hP  
import org.rut.util.algorithm.support.ImprovedQuickSort; he0KzwBF  
import org.rut.util.algorithm.support.InsertSort; $UMxO`F  
import org.rut.util.algorithm.support.MergeSort; }vkrWy^  
import org.rut.util.algorithm.support.QuickSort; gaaW:**y  
import org.rut.util.algorithm.support.SelectionSort; Lrgv:n  
import org.rut.util.algorithm.support.ShellSort; k&4@$;Ap  
>&mlwxqv  
/** i DV.L  
* @author treeroot @Iz vObK  
* @since 2006-2-2 *hVW >{a  
* @version 1.0 C2;qSKG3{m  
*/ &Avd  
public class SortUtil { PW"G]G,  
public final static int INSERT = 1; pOlo_na}[  
public final static int BUBBLE = 2; w#w lZ1f  
public final static int SELECTION = 3; r3oAP[+n  
public final static int SHELL = 4; P g.PD,&U  
public final static int QUICK = 5; nS0K&MH6B  
public final static int IMPROVED_QUICK = 6; Ml` f+$  
public final static int MERGE = 7; F i?2sa  
public final static int IMPROVED_MERGE = 8; LuQ4TT  
public final static int HEAP = 9; {dV#"+  
]w.:K*_=  
public static void sort(int[] data) { 8;YeEW 5  
sort(data, IMPROVED_QUICK); f?T6Ne'  
} %"~\Pu*>  
private static String[] name={ V`$Jan  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B#'TF?HUEn  
}; h% BA,C  
w*`5b!+/  
private static Sort[] impl=new Sort[]{ hc}d S$=C  
new InsertSort(), XQ&iV7   
new BubbleSort(), <:)T7yVq  
new SelectionSort(), Ym+k \h  
new ShellSort(), w}VS mt$F  
new QuickSort(), n<6p0w  
new ImprovedQuickSort(), l$D]*_ jc,  
new MergeSort(), v]|^.x:  
new ImprovedMergeSort(), ItGi2'}  
new HeapSort() _y&m4Vuu  
}; i,NU%be  
z5-vx`  
public static String toString(int algorithm){ .a\b_[+W  
return name[algorithm-1]; EzOO6  
} Dk4Jg++  
;u!qu$O  
public static void sort(int[] data, int algorithm) { [8AGW7_  
impl[algorithm-1].sort(data); PLR[nB7K  
} 4`5jq)  
i8pM,Ppi~  
public static interface Sort { Tct8NG  
public void sort(int[] data); {s!DRc]ln  
} %E Jv!u*-  
n5 dFp%k  
public static void swap(int[] data, int i, int j) { $},Y)"mI  
int temp = data; N%!8I  
data = data[j]; tjc3;9  
data[j] = temp; PeGL Rbx34  
} p%~#~5t,  
} s@sRdoTdF  
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