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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。 2*iIjw3g  
插入排序: pmWr]G3,*  
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package org.rut.util.algorithm.support; CQh,~  
Q'O[R+YT ,  
import org.rut.util.algorithm.SortUtil; y|wlq3o  
/** ^ BQrbY  
* @author treeroot 26vp1  
* @since 2006-2-2 {gbn/{  
* @version 1.0 L;Z0`mdz  
*/ :Bu2,EL*O  
public class InsertSort implements SortUtil.Sort{ L|@y&di  
qqrq11W  
/* (non-Javadoc) ma'FRt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !V 2/A1?  
*/ sZGj"_-Hzu  
public void sort(int[] data) { 6Htg5o|W  
int temp; GVHV =E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^z6_Uw[  
} jh2t9SI~  
} 4;`oUt'.  
} V'*~L\;pU  
!`41q=r  
} u VyGk~  
y\dEk:\)  
冒泡排序: %\|'%/"`2(  
o6 E!IX+  
package org.rut.util.algorithm.support; R218(8S  
B/~%h|  
import org.rut.util.algorithm.SortUtil; &`0/CV  
YW u cvw&  
/** 4lhw3,5  
* @author treeroot @Z>ZiU,^  
* @since 2006-2-2 '52~$z#m  
* @version 1.0 t58e(dgi  
*/ )9l^O  
public class BubbleSort implements SortUtil.Sort{ !l]dR@e  
J:&[ 59  
/* (non-Javadoc) WOuEWw=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AdRX`[ik  
*/ <\kr1qH H  
public void sort(int[] data) { iu&wO<)+?  
int temp; AKMm&(fh%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >SPh2[f  
if(data[j] SortUtil.swap(data,j,j-1); oF(Lji?m  
} ;qHOOT  
} y E[#ze  
} r'QnX;99T  
} 7$h#OV*@,  
V,rq0xW  
} 3gd&i  
OO[F E3F  
选择排序: -'~ LjA(  
<! )**  
package org.rut.util.algorithm.support; Hx ,0zS%>  
~/.7l8)  
import org.rut.util.algorithm.SortUtil; $!&*xrrNM  
orOt>5}b<  
/** y ]?V~%  
* @author treeroot "Ph^BU Ab  
* @since 2006-2-2 Na X   
* @version 1.0 ?QE,;QtpK  
*/ ;2B{9{  
public class SelectionSort implements SortUtil.Sort { @E:,lA  
g=I8@m  
/* E@7J:|.)R  
* (non-Javadoc) ,#pXpAz/  
* Um&(&?Xf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J9~ g|5  
*/ HRB<Y mP@  
public void sort(int[] data) { " Hd|7F'u=  
int temp; Y nLErJ  
for (int i = 0; i < data.length; i++) { [l,Ei?  
int lowIndex = i; 3}e%[AKh  
for (int j = data.length - 1; j > i; j--) { ^o7;c[E`  
if (data[j] < data[lowIndex]) { &x3VCsC\|  
lowIndex = j; w^t/9Nasi  
} :9k Ty:  
} zc[Si bT  
SortUtil.swap(data,i,lowIndex); LD!Q8"  
} h: 9Zt0,  
} #8)*1?  
;Iq/l%vX  
} `r?7oxN  
BCA&mi3q  
Shell排序: R?]02Q  
8 @tV9+u  
package org.rut.util.algorithm.support; kh`"WN Nt  
eH{[C*  
import org.rut.util.algorithm.SortUtil; s_mS^`P7  
yj\Nkh  
/** c"[cNZo  
* @author treeroot :Y[LN  
* @since 2006-2-2 z*-2.}&U<  
* @version 1.0 A{A\RSZ0  
*/ ?!+MM&c-n  
public class ShellSort implements SortUtil.Sort{ [UH||qW  
0\eIQp  
/* (non-Javadoc) wp&=$Aa)'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I1X-s  
*/ @ta7"6p-i@  
public void sort(int[] data) { 13>0OKg`#  
for(int i=data.length/2;i>2;i/=2){ UeRj< \"Q  
for(int j=0;j insertSort(data,j,i); "men  
} ga`3 (  
} J@u;H$@/y  
insertSort(data,0,1); /{&tY: ;m  
} bD?VU<)3  
R~PA 1wDZ  
/** !_Wi!Vr_  
* @param data  a24"yT  
* @param j o7$'cn  
* @param i \ZkA>oO".  
*/ I"ok&^t^}  
private void insertSort(int[] data, int start, int inc) { f.9SB  
int temp; p9x(D/YP0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1]p ZrBh"E  
} :>C2gS@  
} 0.@&_XTPl  
} NGbG4-w-  
H5Io{B%=  
} y2^Y/)   
jWrj?DV,2N  
快速排序: qHrc9fB  
+8RgF   
package org.rut.util.algorithm.support; p"KFJ  
()6wvu}  
import org.rut.util.algorithm.SortUtil; >7QvK3S4%  
=Lf,?"S  
/** XzEc2)0'v  
* @author treeroot eLfk\kk]Pc  
* @since 2006-2-2 XMxSQ B1  
* @version 1.0 H<PtAYFS  
*/ tg<EY!WY  
public class QuickSort implements SortUtil.Sort{  @fl-3q  
~ Q.7VDz  
/* (non-Javadoc) xwq+j "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =ACVE;L?  
*/ q!|*oUW  
public void sort(int[] data) { $}!p+$  
quickSort(data,0,data.length-1); zN^n]N_?  
} +nJgl8'^y  
private void quickSort(int[] data,int i,int j){ Gz,i~XX  
int pivotIndex=(i+j)/2; {?:X8&Sf  
file://swap Hl{S]]z  
SortUtil.swap(data,pivotIndex,j); $\X[@E S0  
s T}. v*  
int k=partition(data,i-1,j,data[j]); rustMs2p  
SortUtil.swap(data,k,j); }&w Ur>=  
if((k-i)>1) quickSort(data,i,k-1); ^c9t'V`IWQ  
if((j-k)>1) quickSort(data,k+1,j); CEX " D`  
+JjW_Rl?=V  
} n[lJLm^(_C  
/** ^\4h<M  
* @param data {y=j?lD  
* @param i iO|se:LY<  
* @param j i OW#>66d  
* @return .y!<t}  
*/ 9_Be0xgJ3^  
private int partition(int[] data, int l, int r,int pivot) { 2AT5  
do{ e4? >-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RBs-_o+%  
SortUtil.swap(data,l,r); 2N: ,Q8~  
} [YlKR'_  
while(l SortUtil.swap(data,l,r); t/VD31  
return l; onz?_SAW  
} sn obT Q  
`4=^cyt+  
} n*[XR`r}  
;:\<gVi:  
改进后的快速排序: <G|(|E1  
fF7bBE)L/|  
package org.rut.util.algorithm.support; u{['<r;I  
RI(DXWM|h  
import org.rut.util.algorithm.SortUtil; 9]f!'d!5  
K,+LG7ec  
/** pNepC<rY  
* @author treeroot C~2F9Pg  
* @since 2006-2-2 jB%lB1Q|  
* @version 1.0 n<O}hM ZT  
*/ 2bw_IT  
public class ImprovedQuickSort implements SortUtil.Sort { !dyXJ Q  
k_ & :24Lj  
private static int MAX_STACK_SIZE=4096; mr*JJF0Z  
private static int THRESHOLD=10; ON=@ O  
/* (non-Javadoc) (^T F%(H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J?? -j  
*/ g jDh?I  
public void sort(int[] data) { 1OCeN%4]Qk  
int[] stack=new int[MAX_STACK_SIZE]; o<BOYrS  
lr>oYS0  
int top=-1; 5m\<U`  
int pivot; 8']M^|1  
int pivotIndex,l,r;  M+||rct  
q&s3wDl/  
stack[++top]=0;  oM2l-[-  
stack[++top]=data.length-1; KL1/^1  
\^L`7cBL  
while(top>0){ 8 OY3A  
int j=stack[top--]; EofymAi%  
int i=stack[top--]; >,gg5<F-E  
x@P y>f2  
pivotIndex=(i+j)/2; 52:HNA\E/  
pivot=data[pivotIndex]; :61Tun  
EMwS1~3dD  
SortUtil.swap(data,pivotIndex,j); 3er nTD*`  
$HHs^tW  
file://partition +b0eE)  
l=i-1; ]m g)Q:d,  
r=j; G&D7a/G\  
do{ +)!YrKuu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YVQN&|-  
SortUtil.swap(data,l,r); PRu 6xsyA  
} .7e2YI,S  
while(l SortUtil.swap(data,l,r); #hfXZVD  
SortUtil.swap(data,l,j); <*16(!k0  
tItX y  
if((l-i)>THRESHOLD){ [I '0,y  
stack[++top]=i; nw-xSS{  
stack[++top]=l-1; _<k\FU r  
} dgR g>)V  
if((j-l)>THRESHOLD){ {MtpkUN  
stack[++top]=l+1; '&x#rjo#  
stack[++top]=j; mHV%I@`Y6  
} N60rgSzI  
@e(o129  
} +giyX7BPJ  
file://new InsertSort().sort(data); nzd2zY>V  
insertSort(data); Wk~W Ozr}^  
} 0h#l JS*  
/** UK595n;P  
* @param data _ "?.!  
*/ %<k2#6K  
private void insertSort(int[] data) { v\KA'PmiP  
int temp; .AR#&mL9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d4u})  
} e@Fo^#ImDx  
} lD)%s!  
} #p P[xE"Y  
zL$@`Eh-KP  
} *w^C"^*  
f[<m<I  
归并排序: B:5Rr}eY+  
)WRLBFi3  
package org.rut.util.algorithm.support; *W.C7=  
<;vbsksZeH  
import org.rut.util.algorithm.SortUtil; f,h J~  
h].<t&  
/** "$#xK|t  
* @author treeroot @Z*W  
* @since 2006-2-2 Dd'm U  
* @version 1.0 pWy=W&0~qf  
*/ YLqGRE`W  
public class MergeSort implements SortUtil.Sort{ $bW3_rl%X  
L^E[J`  
/* (non-Javadoc) _,p/l&<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $+P>~X)  
*/ ?oVx2LdD|  
public void sort(int[] data) { M2 ,YsHt  
int[] temp=new int[data.length]; OVm\  
mergeSort(data,temp,0,data.length-1); X &uTSgN  
} AJh w  
}+)fMZz  
private void mergeSort(int[] data,int[] temp,int l,int r){ wT;0w3.Z  
int mid=(l+r)/2; ( }{G`N>.{  
if(l==r) return ; +AR5W(&  
mergeSort(data,temp,l,mid); s3~lT.  
mergeSort(data,temp,mid+1,r); r[2ILe  
for(int i=l;i<=r;i++){ v=0(~<7B  
temp=data; GR&z,  
} 6g|*`x{  
int i1=l; d ^^bke$~  
int i2=mid+1; GGNvu )"  
for(int cur=l;cur<=r;cur++){ l n{e1':$"  
if(i1==mid+1) 8K.R=  
data[cur]=temp[i2++]; aoTM  
else if(i2>r) dYT%  
data[cur]=temp[i1++]; SQ44  
else if(temp[i1] data[cur]=temp[i1++]; ^Y=\#-Dd  
else k3u "A_"c  
data[cur]=temp[i2++]; LCZ\4g05  
} &|Bc7+/P  
} _y),J'W^3u  
tz5e"+Tz  
} O~T@rX9f  
_Tf4WFu2  
改进后的归并排序: /M|2 62%  
UYk/v]ZA  
package org.rut.util.algorithm.support; ZvNJ^Xz  
/35R u}c  
import org.rut.util.algorithm.SortUtil; MLoYnR^  
G}:w@}h/  
/** E0Y-7&Fv  
* @author treeroot Tu$f?  
* @since 2006-2-2 WlB  
* @version 1.0 zDw5]*R  
*/ 24E}<N,g  
public class ImprovedMergeSort implements SortUtil.Sort { rm5bkJcg~  
C9~52+S  
private static final int THRESHOLD = 10; ",^Mxm{  
419x+3>}  
/* ]^Qn  
* (non-Javadoc) 6hlc1?  
* 4.Q} 1%ZN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a2dnbfSWa[  
*/ OjFLPGRCh  
public void sort(int[] data) { nH`Q#ZFz]?  
int[] temp=new int[data.length]; <D:.(AUeO  
mergeSort(data,temp,0,data.length-1); q|j2MV5#g  
} W{5#@_pL  
IAw{P08+  
private void mergeSort(int[] data, int[] temp, int l, int r) { kddZZA3`  
int i, j, k; 7Nk!1s :  
int mid = (l + r) / 2; ]ro*G"-_1#  
if (l == r) '_GrD>P)-  
return; VRI0W`  
if ((mid - l) >= THRESHOLD) Jbjmv: db  
mergeSort(data, temp, l, mid); [Grxw[(_:  
else <L"GqNuRQ  
insertSort(data, l, mid - l + 1); !D@ZYK;  
if ((r - mid) > THRESHOLD) i&5XF  
mergeSort(data, temp, mid + 1, r); X#*JWQO=  
else jE}33"  
insertSort(data, mid + 1, r - mid); N.\- 8?>  
H7d/X  
for (i = l; i <= mid; i++) { +wEac g>>E  
temp = data; *]AdUEV?  
} -db_E#  
for (j = 1; j <= r - mid; j++) { P+s !|7'  
temp[r - j + 1] = data[j + mid]; nSW=LjrO~<  
} eCqHvMp  
int a = temp[l]; XiL~TCkx4  
int b = temp[r]; t/cY=Wp  
for (i = l, j = r, k = l; k <= r; k++) { j7jCm:  
if (a < b) { ;%<,IdhN  
data[k] = temp[i++]; 6kNrYom  
a = temp; !9[>L@#G  
} else { _I)U%? V+  
data[k] = temp[j--];  1Md  
b = temp[j]; ^su<uG<R  
} jzDuE{  
} d Vj_8>  
} z2g3FUTX)b  
VKq=7^W  
/** yKa{08X:  
* @param data 4Uphfzv3D  
* @param l o=50>$5jlS  
* @param i 7s/u(~d)  
*/ .@(6Y<dN  
private void insertSort(int[] data, int start, int len) { vgsJeV`}I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~R22?g.  
} $oj:e?8N  
} {@+Ty]e  
} %>~sJ0  
} 4kBaB  
2 lj'"nm  
堆排序: MRb-H1+Xf  
OR%'K2C6S  
package org.rut.util.algorithm.support; U%<koD[,  
d/[; `ZD+  
import org.rut.util.algorithm.SortUtil; @6wFst\t  
~\Hc,5G  
/** EdlTdn@A  
* @author treeroot <kGU,@6PF  
* @since 2006-2-2 3QG7C{  
* @version 1.0 %kS(LlL+6  
*/ )(ImLbM)  
public class HeapSort implements SortUtil.Sort{ Hea;?4Vg  
N+Y]st+  
/* (non-Javadoc) t5y;CxL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NWMFtT  
*/ [R=yF ~-  
public void sort(int[] data) { 3~uW I%I`  
MaxHeap h=new MaxHeap(); x4E7X_  
h.init(data); ldiD2 Q  
for(int i=0;i h.remove(); Fs9I7~L3  
System.arraycopy(h.queue,1,data,0,data.length); "uaMk}[ <!  
} lfqiyYFm  
t m7^yn:  
private static class MaxHeap{ 9~p[  
c(!6^qk]!`  
void init(int[] data){ ]ooIr Y8  
this.queue=new int[data.length+1]; )}"wesNo".  
for(int i=0;i queue[++size]=data; _#r+ !e  
fixUp(size); E`?3PA8  
} [co% :xJu  
} gP0LCK>  
Bj1?x  
private int size=0; +VO-oFE|  
L&u$t}~)  
private int[] queue; @cFJeOC|  
czS+< w  
public int get() { S7/eS)SQR  
return queue[1]; K i'Fn"  
} 3Nq N \5B:  
I'uSp-Sfy  
public void remove() { L)@?e?9  
SortUtil.swap(queue,1,size--); M<kj_.  
fixDown(1); B56L1^ 7  
} !,6c ~ w  
file://fixdown {(r`k;fB  
private void fixDown(int k) { 6)Y.7XR  
int j; X]wRwG  
while ((j = k << 1) <= size) { 3'cE\u  
if (j < size %26amp;%26amp; queue[j] j++; ]pH-2_  
if (queue[k]>queue[j]) file://不用交换 %M7` Hwu  
break; k'Sp.  
SortUtil.swap(queue,j,k); |wH5sjT  
k = j; ,*7 (%k^`  
} de p=&  
} (Iaf?J5{  
private void fixUp(int k) { `$W_R[  
while (k > 1) { $Zug Bh[b  
int j = k >> 1; Cjc6d4~  
if (queue[j]>queue[k]) Gn ~6X-l  
break; r76J N  
SortUtil.swap(queue,j,k); @ycDCB(D}  
k = j; ??M"6k  
} j4|N- :  
} Kx;eaz:gx  
0yuS3VY)  
} {^\+iK4bS  
qI#;j%V  
} +trC,D  
+ HK8jCa  
SortUtil: 1~Oe=`{&  
`w.n]TR  
package org.rut.util.algorithm; _"bHe/'CI  
&jslyQ#  
import org.rut.util.algorithm.support.BubbleSort; mID"^NOi#  
import org.rut.util.algorithm.support.HeapSort; 3?V_BUoON  
import org.rut.util.algorithm.support.ImprovedMergeSort; H!5\v"]WB  
import org.rut.util.algorithm.support.ImprovedQuickSort; nxWY7hU  
import org.rut.util.algorithm.support.InsertSort; ]:Ns f|C0  
import org.rut.util.algorithm.support.MergeSort; Yu)NO\3&  
import org.rut.util.algorithm.support.QuickSort; f !I[>&n  
import org.rut.util.algorithm.support.SelectionSort; psg)*'r  
import org.rut.util.algorithm.support.ShellSort; >8WP0 Qx/  
]:4*L  
/** lDYyqG4  
* @author treeroot 0 q} *S~  
* @since 2006-2-2 a yCY~=i  
* @version 1.0 JtEo'As:[  
*/ mH%yGBp_  
public class SortUtil { !F A]  
public final static int INSERT = 1; x:),P-~w  
public final static int BUBBLE = 2; m[~V/N3  
public final static int SELECTION = 3; WD]p U  
public final static int SHELL = 4; oSy yd  
public final static int QUICK = 5; YwDbPX  
public final static int IMPROVED_QUICK = 6; lQ" p !  
public final static int MERGE = 7; gkES5Q  
public final static int IMPROVED_MERGE = 8; ="Ho%*@6  
public final static int HEAP = 9; *AO,^R&e.  
'EbWFMjy  
public static void sort(int[] data) { Y9uC&/_C  
sort(data, IMPROVED_QUICK); PsnWWj?c  
} @k,z:~[C=  
private static String[] name={ /Z~<CbKKl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wy0tgy(' |  
}; 8$6Y{$&C  
V@zg}C|e  
private static Sort[] impl=new Sort[]{ i BF|&h(\  
new InsertSort(), %?}33yV  
new BubbleSort(), sz:g,}~h  
new SelectionSort(), fVF2-Rh=  
new ShellSort(), n>ULRgiT:o  
new QuickSort(), WY?[,_4U  
new ImprovedQuickSort(), (.D~0a JU  
new MergeSort(), Si8pzd  
new ImprovedMergeSort(), }uJu>'1[G  
new HeapSort() *5%d XixN  
}; =Je[c,&j$?  
tnH2sHby  
public static String toString(int algorithm){ $*e2YQdLo  
return name[algorithm-1]; `UD/}j@  
} /|tJ6T1LrB  
AK'[c+2[  
public static void sort(int[] data, int algorithm) { Fq |Ni$  
impl[algorithm-1].sort(data); z\K"Rg~J  
} yE:+Lo`>  
;j[>9g  
public static interface Sort { h"X;3b^ m  
public void sort(int[] data); &,zq%;-f  
} kD=WO4}  
,{M^-3C  
public static void swap(int[] data, int i, int j) { )'l:K.F  
int temp = data; j[`j9mM8  
data = data[j]; n^Hm;BiE#  
data[j] = temp;  6:b! F  
} &e @2  
} hs^zTZ_  
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