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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。 /6Vn WrN_  
插入排序: #:6gFfk0<  
Kx@;LRY#  
package org.rut.util.algorithm.support; 1l*O;J9By  
jVhfpS[  
import org.rut.util.algorithm.SortUtil; =ijVT_|u0  
/** eLc@w<yB  
* @author treeroot  /i  
* @since 2006-2-2 )zoO#tX  
* @version 1.0 / %:%la%  
*/ 5EqC.g.  
public class InsertSort implements SortUtil.Sort{ a'm\6AW2)  
^~:&/0  
/* (non-Javadoc) (fJ.o-LQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !-gjA@Pk  
*/ 3A5:D#  
public void sort(int[] data) { Cvf^3~ q  
int temp; >UUT9:,plA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f-b#F2I  
} v)AadtZ0d  
} r=o\!sh[  
} FaUc"J  
:0)nL  
} -<GSHckD  
6*92I  
冒泡排序: AECaX4h+_  
WOaj_o  
package org.rut.util.algorithm.support; !WD~zZ|  
e}Xmb$  
import org.rut.util.algorithm.SortUtil; [hT|]|fJS;  
o/Cu^[an  
/** kbF+aS  
* @author treeroot NDv_@V(D  
* @since 2006-2-2 lq%6~va  
* @version 1.0 gvx {;e  
*/ _g#v*7o2@  
public class BubbleSort implements SortUtil.Sort{ ~^u#Q\KE"  
JIobs*e0m  
/* (non-Javadoc) |Q _]+[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HECZZnM  
*/ r{~@hd'Aj  
public void sort(int[] data) { y$n`+%_  
int temp; RU' WHk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cA8"Ft{P)  
if(data[j] SortUtil.swap(data,j,j-1); H LnizE  
} R6KS&Ge_  
} E5y\t_H  
} ;:)?@IuSy  
} &InMI#0mV  
h+rrmC  
} e%O]U:Z  
0,x<@.pW  
选择排序: EN!Q]O|  
:',Q6j(s  
package org.rut.util.algorithm.support; ~dO&e=6Hk  
d^Jf(NE0Yo  
import org.rut.util.algorithm.SortUtil; Xw2tCRzD  
,n &e,I  
/** B- VhUS  
* @author treeroot qAF.i^  
* @since 2006-2-2 b&$sY!iU  
* @version 1.0 GG@&jcp7  
*/ h5.>};"@ '  
public class SelectionSort implements SortUtil.Sort { %+y92'GqG/  
!]-ET7  
/* X+*"FKm S.  
* (non-Javadoc) BVt)~HZ  
* uWSfr(loX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QE8aYPSFf  
*/ eT|"6WJ:{  
public void sort(int[] data) { < x==T4n/  
int temp; 34$qV{Y%y  
for (int i = 0; i < data.length; i++) { @9wug!,  
int lowIndex = i; ;1&7v  
for (int j = data.length - 1; j > i; j--) { bz=B&YR  
if (data[j] < data[lowIndex]) { 8+irul{H_  
lowIndex = j; 5ma*&Q8+  
} A]FjV~PB  
} '#fwNbD  
SortUtil.swap(data,i,lowIndex); 3~%wA(|A  
} <CJ`A5N  
} sBo|e]m#  
pM^r8kIH  
} zeZ}P>C  
iB:](Md'r  
Shell排序: F5#P{ zk|  
}8W5m(Zq9n  
package org.rut.util.algorithm.support; %z_PEqRj  
fs=W(~"  
import org.rut.util.algorithm.SortUtil; :]viLw\&g  
{'QA0K  
/** _qPd)V6yb  
* @author treeroot ^j1WF[GiSO  
* @since 2006-2-2 lR9~LNK?  
* @version 1.0 abVz/R/o  
*/ gUcG#  
public class ShellSort implements SortUtil.Sort{ 9? #pqw  
jo-qP4w  
/* (non-Javadoc) 3%JPJuNVw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m R3km1T  
*/ 7|"gMw/  
public void sort(int[] data) { Psf'#4g  
for(int i=data.length/2;i>2;i/=2){ *)2& gQ&%+  
for(int j=0;j insertSort(data,j,i); XSu9C zx&I  
} Wn9b</ tf  
} -I'@4\<  
insertSort(data,0,1); oA _,jsD4  
} k3/V$*i,1b  
z8ox#+l  
/** Xiyh3/%yy  
* @param data jE !W&0  
* @param j )i;o\UU  
* @param i 5Z`9L| 3d  
*/ \*5_gPj!d  
private void insertSort(int[] data, int start, int inc) { T =l4Vb{>  
int temp; .!\NM&E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L b'HM-d  
} V=@M!;'<  
} :d7tzYT ^  
} ]Y%?kQ^  
6n 2LG  
} ~ [por  
(mOUbO8  
快速排序: >|Hd*pg))  
Mpm#a0f  
package org.rut.util.algorithm.support; "uz}`G~O  
s5s'$|h"  
import org.rut.util.algorithm.SortUtil; Z"# /,?|3@  
vq df-i  
/** X"KX_)GZD  
* @author treeroot drJ<&1O  
* @since 2006-2-2 Uv(THxVh  
* @version 1.0 <V}^c/c!  
*/ s4$Z.xwr  
public class QuickSort implements SortUtil.Sort{ *uLlf'qU]  
i_? S#L]h  
/* (non-Javadoc) O;N QJ$^bI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G|Du/XYh  
*/ eQ}o;vJN  
public void sort(int[] data) { Btmv{'T_y@  
quickSort(data,0,data.length-1); W6&s_ (  
} )1KlcF  
private void quickSort(int[] data,int i,int j){ JVzU'd;1!  
int pivotIndex=(i+j)/2; ]"3(UKx  
file://swap @bN`+DC!<  
SortUtil.swap(data,pivotIndex,j); PF,|Wzx  
fNVNx~E  
int k=partition(data,i-1,j,data[j]); O6LuFT .  
SortUtil.swap(data,k,j); #'qEm=%  
if((k-i)>1) quickSort(data,i,k-1); USKa6<:{W  
if((j-k)>1) quickSort(data,k+1,j); 2qb,bp1$  
uqhNi!;  
} g|W|>`>  
/** wX3x.@!:  
* @param data Z;^UY\&X  
* @param i Z2yZz:.'  
* @param j "]%.%$  
* @return 9tW=9<E  
*/ Yy4? |wVl  
private int partition(int[] data, int l, int r,int pivot) { F8\nAX  
do{ ?(cbZ#( o  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <bPn<QI  
SortUtil.swap(data,l,r); @ (UacFO  
} 7*e7P[LQU  
while(l SortUtil.swap(data,l,r); A~CQ@  
return l; IAD_Tck  
} !H`! KBW  
UIUCj8QJg  
} rUX1Iu7  
,cR=W|6cQm  
改进后的快速排序: 4uW}.7R'  
H0Q.; !^  
package org.rut.util.algorithm.support; R "S,&  
Z|YiYQl[)  
import org.rut.util.algorithm.SortUtil; A9_)}  
3Z *'  
/** ;:JTb2xbb  
* @author treeroot v2>.+Eh#  
* @since 2006-2-2 HWFI6N  
* @version 1.0 w6k\po=  
*/ {iGk~qN  
public class ImprovedQuickSort implements SortUtil.Sort { niZ/yW{w  
@$R[Js%MuO  
private static int MAX_STACK_SIZE=4096; 9rr"q5[  
private static int THRESHOLD=10; dMAd-q5{  
/* (non-Javadoc) -[cl]H)V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Uf}gG)  
*/ 1C[j:Ly/  
public void sort(int[] data) { ~.;S>o[  
int[] stack=new int[MAX_STACK_SIZE]; tL?nO#Qx  
#x"dWi (  
int top=-1; 6m_whGosi  
int pivot; %&L]k>n^  
int pivotIndex,l,r; VU1 ;ZJ E  
6vVx>hFJ47  
stack[++top]=0; wl1JKiodg  
stack[++top]=data.length-1; bgW=.s  
E>j*m}b  
while(top>0){ fr~e!!$H  
int j=stack[top--]; nRpZ;X)'.  
int i=stack[top--]; ?@"B:#l  
#GBe=tm\K  
pivotIndex=(i+j)/2; 8~QEJW$  
pivot=data[pivotIndex]; #P,mZ}G\  
*R17 KMS  
SortUtil.swap(data,pivotIndex,j); IS; F9{  
[KIK}:  
file://partition -G<$wh9~3  
l=i-1; l4oI5)w  
r=j; @\,WJmW  
do{ V j\1 HQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .6Swc?  
SortUtil.swap(data,l,r); &8R%W"<K  
} ='1J&w~7  
while(l SortUtil.swap(data,l,r); :IFTiq5a;  
SortUtil.swap(data,l,j); GdFTKOq  
"]}+QK_  
if((l-i)>THRESHOLD){ -ec ~~95  
stack[++top]=i; Las4ux[_  
stack[++top]=l-1; B;A^5~b  
} ][8ZeM9&p  
if((j-l)>THRESHOLD){ Xp <RG p7E  
stack[++top]=l+1; wv>uT{g#  
stack[++top]=j; Z~}=q  
} =4z:Df  
_ukKzY  
} 5b9v`6Kq  
file://new InsertSort().sort(data); -(FVTWi0  
insertSort(data); \BC|`)0h  
} bd[zdL#4K  
/** k,>sBk 8  
* @param data A~ugx~S0  
*/ .YquOCc(  
private void insertSort(int[] data) { \>NjeMuWU  
int temp; SRq0y,d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OM!CP'u#{  
} L^:+8g  
} 8fzmCRFH  
} >Z k$q~'+  
>#z*gCO5,  
} pEIc ?i*  
rf"%D<bb  
归并排序: unqX<6hu  
f $MVgX  
package org.rut.util.algorithm.support; <>,V> k|  
eiB5 8b3  
import org.rut.util.algorithm.SortUtil; mA:NAV $!s  
`X8AM=  
/** ^\kv> WBE  
* @author treeroot {l= !  
* @since 2006-2-2 a%>p"4WL  
* @version 1.0 lgTavs  
*/ N%{&%C6{  
public class MergeSort implements SortUtil.Sort{ ;+XiDEX0}  
"J(#|v0  
/* (non-Javadoc) L*tn>AO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mBgMu@zt)  
*/ }PGl8F !  
public void sort(int[] data) { -:(,<Jt<  
int[] temp=new int[data.length]; PdG:aGQ>  
mergeSort(data,temp,0,data.length-1); ` INcZr"  
} 0}]k>ndT  
p{7"a  
private void mergeSort(int[] data,int[] temp,int l,int r){ BgLK}p^  
int mid=(l+r)/2; GuMsw*{>  
if(l==r) return ; _|.q?;C]$  
mergeSort(data,temp,l,mid); >IO}}USm  
mergeSort(data,temp,mid+1,r); C.dN)?O  
for(int i=l;i<=r;i++){ P`wp`HI  
temp=data; w^09|k  
} T!eb=oy  
int i1=l; Jq)!)={  
int i2=mid+1; #imMkvx?  
for(int cur=l;cur<=r;cur++){ {,p<!Jq~G  
if(i1==mid+1) 5DKR1z:  
data[cur]=temp[i2++]; b`E'MX_ m  
else if(i2>r) 3e$&rpv  
data[cur]=temp[i1++]; yjZxD[ Z  
else if(temp[i1] data[cur]=temp[i1++]; HgY"nrogt$  
else dE2(PQb*P  
data[cur]=temp[i2++]; X"<t3l(+  
} d V#h~  
} 0%.l|~CE&  
ZK4/o  
} jvn:W{'Q  
%76N$`{u  
改进后的归并排序: n\ aG@X%oq  
f,z_|e  
package org.rut.util.algorithm.support; }./__gJ  
'bj$ZM9  
import org.rut.util.algorithm.SortUtil; S!o!NSn@1  
Ro`Hm8o/  
/** {4tJT25  
* @author treeroot [aX'eM q  
* @since 2006-2-2 bJ~]nj 3  
* @version 1.0 GYYk3\r  
*/ *b9=&:pU(  
public class ImprovedMergeSort implements SortUtil.Sort { jLc4D'  
XPE{]4 g  
private static final int THRESHOLD = 10; ?fcQd6-}  
5'gV_U  
/* 4' bup h1(  
* (non-Javadoc) \M1-  
* 0}jB/Z_T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DWZ!B7Ts  
*/ H `Fe |6I&  
public void sort(int[] data) { 9r% O  
int[] temp=new int[data.length]; <e|I?zI9-  
mergeSort(data,temp,0,data.length-1); {Cnz7TVB  
} -sl] funRy  
X2!vC!4P?L  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5F$ elW  
int i, j, k; # (B <n  
int mid = (l + r) / 2; GQO}E@W6C  
if (l == r) .0;Z:x_3  
return; ~=i9]%g ?  
if ((mid - l) >= THRESHOLD) ~7T]l1]W%  
mergeSort(data, temp, l, mid); VqLqj$P  
else ;_)&#X,?(  
insertSort(data, l, mid - l + 1); #:v}d+  
if ((r - mid) > THRESHOLD) JX@/rXFY}  
mergeSort(data, temp, mid + 1, r); 37Vs9w  
else `~QS3zq  
insertSort(data, mid + 1, r - mid); GGsDR%U  
ZFh2v]|!  
for (i = l; i <= mid; i++) { _M= \s>;G  
temp = data; dX-Xzg  
} 82Dw,Cn  
for (j = 1; j <= r - mid; j++) { %JmSCjt`G  
temp[r - j + 1] = data[j + mid]; z/aZD\[_  
} PX}YDC zP$  
int a = temp[l]; hSE\RX 9  
int b = temp[r]; hl?G_%a  
for (i = l, j = r, k = l; k <= r; k++) { U7(84k\j  
if (a < b) { C]K|;VQ  
data[k] = temp[i++];  Hrm^@3  
a = temp; z/(^E8F  
} else { E9t[Mb %0  
data[k] = temp[j--]; }N!I|<"/  
b = temp[j]; j u`x   
} lAz.I  
} u{maE ,  
} 4~=/CaG~  
V9qA.NV2  
/** ,[ &@?  
* @param data 0q(}nv  
* @param l EOWLGleD1  
* @param i JlJy3L8L  
*/ + DFG762  
private void insertSort(int[] data, int start, int len) { k\X1`D}R  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sui3(wb  
} q"4{GCavN  
} <5 G+(vP  
} < I[ Vv'x  
} p =_K P9  
;HRIB)wF  
堆排序: Kf#9-.}?  
S*<+vIo  
package org.rut.util.algorithm.support; VJ;4~WgBz  
^w'y>uFM  
import org.rut.util.algorithm.SortUtil; f"j~{b7  
:r* skV|  
/** OI</o0Ca  
* @author treeroot 1TeYA6 t  
* @since 2006-2-2 zLd i  
* @version 1.0 EEmYfP[3  
*/ E4~k)4R  
public class HeapSort implements SortUtil.Sort{ fOs}5J  
gB,~Y511  
/* (non-Javadoc) "b5:6\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )OxcJPo  
*/ -@f5d  
public void sort(int[] data) { eSNi6RvE  
MaxHeap h=new MaxHeap(); '=}F}[d"kk  
h.init(data); J P'|v"  
for(int i=0;i h.remove(); &y"e|aE  
System.arraycopy(h.queue,1,data,0,data.length); Y}BT| "  
} JJ_77i  
,;9byb  
private static class MaxHeap{ <hazrKUn  
+ >?"P^  
void init(int[] data){ gwwYz]'d>r  
this.queue=new int[data.length+1]; jy#'oadS?  
for(int i=0;i queue[++size]=data; z)N8#Y~vn  
fixUp(size); |9c J O@  
} }_m/3*x_  
} ]G m"U!h*  
p\T.l <p  
private int size=0; 70IBE[T&  
>DqV^%2l  
private int[] queue; g9~>mJR  
ak]:ir`o  
public int get() {  <yE  
return queue[1]; CqGi 2<2  
} &' E(  
MBZ/Pzl~  
public void remove() { *mH++3h  
SortUtil.swap(queue,1,size--); P5/\*~}  
fixDown(1); _s{on/u  
} #1c%3KaZ I  
file://fixdown e7rD,`NiV  
private void fixDown(int k) { R >1  
int j; 8wJfG Y  
while ((j = k << 1) <= size) { 2 )oT\m  
if (j < size %26amp;%26amp; queue[j] j++; oqeA15k$  
if (queue[k]>queue[j]) file://不用交换 %!Z9: +;B  
break; {x$WBy9  
SortUtil.swap(queue,j,k); 3gN#[P  
k = j; 1#BMc%  
} >;I$&  
} \!D<u'n  
private void fixUp(int k) { GSck^o2{  
while (k > 1) { ^i>Tm9vM  
int j = k >> 1; $e>(M&9,  
if (queue[j]>queue[k]) d'Cn] <  
break; iupuhq$ ]  
SortUtil.swap(queue,j,k); >p"ytRu^  
k = j; xx[XwN;  
} '*K}$+l  
} "tax  
i#c1 ZC  
} 701ei;   
-js:R+C528  
} Ei@w*.3P<  
n1D,0+N=  
SortUtil: 3 sUTdCnNf  
f'501MJu  
package org.rut.util.algorithm; T \d-r#{  
a B(_ZX'L  
import org.rut.util.algorithm.support.BubbleSort; 90ZMO7_  
import org.rut.util.algorithm.support.HeapSort; P_Rh& gkuK  
import org.rut.util.algorithm.support.ImprovedMergeSort; O2z{>\  
import org.rut.util.algorithm.support.ImprovedQuickSort; z^;0{q,  
import org.rut.util.algorithm.support.InsertSort; IpX.ube  
import org.rut.util.algorithm.support.MergeSort; S3Q^K.e?  
import org.rut.util.algorithm.support.QuickSort; `1;m:,9  
import org.rut.util.algorithm.support.SelectionSort; !kAjne8]d  
import org.rut.util.algorithm.support.ShellSort; E8$k}I  
j0^%1  
/** &z'N Q !uV  
* @author treeroot !$}:4}56F  
* @since 2006-2-2 <UI^~Azc#  
* @version 1.0 |]s/NNU  
*/ 9eG{"0)  
public class SortUtil { s.VtmAH  
public final static int INSERT = 1; l-?B1gd,l  
public final static int BUBBLE = 2; ]mO$Tg&s~  
public final static int SELECTION = 3; X9ua&T2(l  
public final static int SHELL = 4; `cu W^/c  
public final static int QUICK = 5; fjD/<`}v  
public final static int IMPROVED_QUICK = 6; oll J#i9  
public final static int MERGE = 7; O{YT6&.S0  
public final static int IMPROVED_MERGE = 8; -|Z[GN:  
public final static int HEAP = 9; #j!RbW  
OFcL h  
public static void sort(int[] data) { nd~cpHQR^  
sort(data, IMPROVED_QUICK); 6M sVV_/  
} 5W%^g_I  
private static String[] name={ Y z"B  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [WZGu6$SU  
}; !'yCB9]O  
VTM*=5|c   
private static Sort[] impl=new Sort[]{ OAlV7cfD  
new InsertSort(), t(d$v_*y51  
new BubbleSort(), g7Xjo )  
new SelectionSort(), DcjF $E  
new ShellSort(), |AgdD  
new QuickSort(), j%_{tB  
new ImprovedQuickSort(), ?%)G%2  
new MergeSort(), ;^fGQ]`4  
new ImprovedMergeSort(), j.}@9  
new HeapSort() I[P43>F3  
}; k 5~#_D>  
b-'T>1V  
public static String toString(int algorithm){ k&oq6!ix  
return name[algorithm-1]; o p{DPUO0  
} NoSq:e  
| DB7o+4  
public static void sort(int[] data, int algorithm) { i!AFXVX  
impl[algorithm-1].sort(data); ^v5v7\!  
} P|0dZHpT  
WR5@S&fU`  
public static interface Sort { $9~6M*  
public void sort(int[] data); H YA<  
} _BC%98:WP  
Ln&'5D#  
public static void swap(int[] data, int i, int j) { G0e]PMeFl  
int temp = data; 06)B<  
data = data[j]; q4Rvr[  
data[j] = temp; 1$+-?:i C  
} CP5vo-/)-  
} x-hr64WFK  
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