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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。 *;l[|  
插入排序: So= BcX-  
3_>=Cv}  
package org.rut.util.algorithm.support; CSH*^nk':O  
5lyHg{iqD  
import org.rut.util.algorithm.SortUtil; %~M#3Ywa  
/** ] G^9PZ-  
* @author treeroot \(}pm#O  
* @since 2006-2-2 Wiyiq )^  
* @version 1.0 `/9I` <y  
*/ Cq[Hh#q  
public class InsertSort implements SortUtil.Sort{ 4ves|pLET  
1@9M[_<n5  
/* (non-Javadoc) X`fm5y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tBETNt7  
*/ :\C/mT3xL)  
public void sort(int[] data) { h+S]C#X,}  
int temp; CF v]wS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 30<_`  
} >DN^',FEm  
} 3S1{r )[j  
} t#%J=zF{  
`~\8fN  
} ZG? e%  
5RP5%U  
冒泡排序: E,fbIyX  
qTN30(x2  
package org.rut.util.algorithm.support; E= .clA  
+:W?:\  
import org.rut.util.algorithm.SortUtil; t>x!CNb'C  
WO6+r?0M2  
/** b;nqhO[f}  
* @author treeroot P76gJ@#m  
* @since 2006-2-2 <sX_hIA^Fx  
* @version 1.0 yZ]?-7  
*/ [[xnp;-;  
public class BubbleSort implements SortUtil.Sort{ g?K? Fn.}  
Gyrc~m[$  
/* (non-Javadoc) PR*EyM[T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9< S  
*/ _#uRKy<`N  
public void sort(int[] data) { jUDE)~h  
int temp; %cJdVDW`L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q29d=  
if(data[j] SortUtil.swap(data,j,j-1); J4s`U/F  
} _Fe=:q  
} Qz"//=hC|H  
} 0#ON}l)>  
} 1bHQB$%z  
{:KPEN  
} x![G'I  
mo,"3YW  
选择排序: L0w2qF  
4G hg~0  
package org.rut.util.algorithm.support; L">m2/ HG  
c._!dq&#R  
import org.rut.util.algorithm.SortUtil; j,Qb'|f5  
d,Oe3?][0p  
/** ~M1T @Mv  
* @author treeroot >FJK$>[1:p  
* @since 2006-2-2 Y![8-L|Q  
* @version 1.0 n57mh5mixM  
*/ B*P;*re  
public class SelectionSort implements SortUtil.Sort { &Aym@G|k?  
~}SQLYy7Z  
/* c8HETs1  
* (non-Javadoc) wM#l`I  
* /<dl"PWkJv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ymT]ow6C  
*/ lQ"t#b+  
public void sort(int[] data) { y)TBg8Q  
int temp; lTFo#p_(  
for (int i = 0; i < data.length; i++) { v[ R_6  
int lowIndex = i; 07:h4beT  
for (int j = data.length - 1; j > i; j--) { s?fEorG  
if (data[j] < data[lowIndex]) { 1v<uA9A%[  
lowIndex = j; AgB$ w4  
} 1F+nWc2b  
} Mko,((>I1  
SortUtil.swap(data,i,lowIndex); =#wE*6T9  
} :5jor Vu  
} I*mBU^<9V  
PWyFys  
} 2uMSeSx$  
= N:5#A  
Shell排序: ?ZkVk=t?  
vkW;qt}yO  
package org.rut.util.algorithm.support; :K(+ KN(  
Jq+@%#G  
import org.rut.util.algorithm.SortUtil; e`)zR'As  
}/g1  
/** ?3i<^@?  
* @author treeroot B0gs<E  
* @since 2006-2-2 "IWL& cH3  
* @version 1.0 "L9pFz</  
*/ (: mF+%(  
public class ShellSort implements SortUtil.Sort{ ;)sC{ "Jb  
En0hjXa  
/* (non-Javadoc) ;@n/g U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0.1?hb|p5T  
*/ Ju.T.)H  
public void sort(int[] data) { +Lo,*  
for(int i=data.length/2;i>2;i/=2){ <u  
for(int j=0;j insertSort(data,j,i); :;Npk9P(N  
} T'N/A9{q  
} 8Z 0@-8vi  
insertSort(data,0,1); uFOYyrESc  
} cQ0+kX<  
Owh:(EJ"d  
/** ^n\g,  
* @param data <S0gIg`)  
* @param j @j%7tfW  
* @param i cOP%R_ak?  
*/ |Lc.XxBkc  
private void insertSort(int[] data, int start, int inc) { p >nKNd_aQ  
int temp; }w)wW1&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6O'Y@9#  
} }jg,[jw_"X  
} >E>'9@Uh  
} qi8~bQ{rH  
 f^[m~  
} kB-<17  
IN"6 =2:  
快速排序: dAjm4F -  
Q*/jQC  
package org.rut.util.algorithm.support; 5"Y:^_8  
hP jL  
import org.rut.util.algorithm.SortUtil; ~e+pa|lO  
EsLtC5]  
/** VJtRL')  
* @author treeroot <"LA70Hkk  
* @since 2006-2-2 B> zQ[e@t  
* @version 1.0 kO,vHg$  
*/ <ol? 9tm  
public class QuickSort implements SortUtil.Sort{ +^%0/0e  
@$?*UI6y  
/* (non-Javadoc) F4g3l    
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~JOC8dO  
*/ 8`q"] BQN  
public void sort(int[] data) { '^.3}N{Fo  
quickSort(data,0,data.length-1); 0Rh*SoYrC  
} z@xkE ,j>  
private void quickSort(int[] data,int i,int j){ <@qJsRbhK  
int pivotIndex=(i+j)/2; h9+ 7 6  
file://swap <{.pYrn  
SortUtil.swap(data,pivotIndex,j); H`T}k+e2-N  
JiiYl&#  
int k=partition(data,i-1,j,data[j]); qn` \g  
SortUtil.swap(data,k,j); TZ PUVOtL_  
if((k-i)>1) quickSort(data,i,k-1); Y,X0x-  
if((j-k)>1) quickSort(data,k+1,j); \~""<*Hz  
6H|&HV(!R  
} OC`Mzf%.  
/** {z8wFL\  
* @param data ]?hlpL  
* @param i !]P=v`B.  
* @param j ='HLA-uT  
* @return g"D:zK)  
*/ Qy) -gax:,  
private int partition(int[] data, int l, int r,int pivot) { :tLMh08h  
do{ e`% <D[-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZZW%6-B  
SortUtil.swap(data,l,r); hj3wxH.}  
} iD:T KB_r  
while(l SortUtil.swap(data,l,r); 8{p#Nl?U1  
return l; kT&GsR/  
} ?O/!pUAu  
/Fp@j/50  
} +< c(;Ucl?  
7T=:dv  
改进后的快速排序: {uiL91j.  
?;p45y~n%  
package org.rut.util.algorithm.support; s%)>O{{)  
4zf(  
import org.rut.util.algorithm.SortUtil; mB*;>   
d?=r:TBU  
/** D(M^%z2N  
* @author treeroot QeD ;GzG  
* @since 2006-2-2 ]U5/!e  
* @version 1.0 qApf\o3[0  
*/ Oa7jLz'i  
public class ImprovedQuickSort implements SortUtil.Sort { uq@_DPA7  
4-q8:5  
private static int MAX_STACK_SIZE=4096; _MUSXB'  
private static int THRESHOLD=10; Qx77%L4  
/* (non-Javadoc) vi0nJ -Xg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N`5 mPE  
*/ _(:bGI'.m  
public void sort(int[] data) { x]|-2t  
int[] stack=new int[MAX_STACK_SIZE]; Ba;tEF{X  
2r#W#z%vS  
int top=-1; <VmEXJIk  
int pivot; `qj24ehc  
int pivotIndex,l,r; c]/&xRd  
+v|]RgyW)  
stack[++top]=0; ,a} vx"~  
stack[++top]=data.length-1; f15n ~d  
rNX]tp{j  
while(top>0){ e>$E67h<~  
int j=stack[top--]; FeuqqZ\=&  
int i=stack[top--]; <0H^2ekd  
b'G!)n  
pivotIndex=(i+j)/2; =' #yG(h  
pivot=data[pivotIndex]; <z-+{-?z~  
E% \Ohs7  
SortUtil.swap(data,pivotIndex,j); >/DlxYG?  
IVSd,AR7yY  
file://partition YW^sf,zQ  
l=i-1; %ZJ;>a#  
r=j; $U}GX'1LZ  
do{ Y kcN-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &e1(|qax  
SortUtil.swap(data,l,r); |kkg1M#  
} A$ o?_  
while(l SortUtil.swap(data,l,r); & 13#/  
SortUtil.swap(data,l,j); O `a4 ")R  
5U%a$.yr  
if((l-i)>THRESHOLD){ 9Zpd=m8dU  
stack[++top]=i; F]^ZdJ2  
stack[++top]=l-1; # ,27,#  
} <5l!xzvw  
if((j-l)>THRESHOLD){ ,{{Z)"qaH  
stack[++top]=l+1; C(5B/W6  
stack[++top]=j; 4$jb-Aw  
} "9yQDS:  
hIMD2  
} M\dZxhQ-l  
file://new InsertSort().sort(data); >^ M=/+<c  
insertSort(data); y4N=v{EbL  
} <>^otb,e$  
/** lAx^!#~\  
* @param data +(J{~A~  
*/ SHP_  
private void insertSort(int[] data) { ($Ck5`_MK  
int temp; y4 ~;H{!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S%k](\7!  
} 8zk?:?8%{  
} zsha/:b  
} p>GxSE)  
=aE!y5  
} {/SLDyf%Z  
ekhx?rz  
归并排序: X\'+);Z  
Kq2,J&Ca3  
package org.rut.util.algorithm.support; ^%k[YJtB=i  
KcNh3CR  
import org.rut.util.algorithm.SortUtil; tu0agSpU  
$&[}+??  
/** k\wI^D  
* @author treeroot @EzO bE{  
* @since 2006-2-2 2/V9Or 52  
* @version 1.0 ![4<6/2gy  
*/ ) v^;"q"  
public class MergeSort implements SortUtil.Sort{ qx<h rC0Z&  
\-~TW4dYe  
/* (non-Javadoc) Uk|(VR9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nRlvW{p;  
*/ zeG_H}[2&  
public void sort(int[] data) { D "9Hv3  
int[] temp=new int[data.length]; gl~>MasV&  
mergeSort(data,temp,0,data.length-1); .l(t\BfE~  
} Ud[Zv?tA:  
\w\{x0u  
private void mergeSort(int[] data,int[] temp,int l,int r){ a}MSA/K(  
int mid=(l+r)/2; ^+zhzfJ  
if(l==r) return ; 6+Wkcr h  
mergeSort(data,temp,l,mid); ]Sgc 42hk  
mergeSort(data,temp,mid+1,r); Foc) u~  
for(int i=l;i<=r;i++){ 9py *gN#  
temp=data; *P}v82C N  
} V8{5 y <Y>  
int i1=l; iN+Tig?c  
int i2=mid+1; E||[(l,b  
for(int cur=l;cur<=r;cur++){ c>nXnN  
if(i1==mid+1) NRgNW1#  
data[cur]=temp[i2++]; rYYAZ(\8  
else if(i2>r) }tRY,f  
data[cur]=temp[i1++]; U$5 lh  
else if(temp[i1] data[cur]=temp[i1++]; WGeTL`}dh  
else bI?YNt,  
data[cur]=temp[i2++]; 4tv}V:EO  
} bhWH  
} WYklS<B[  
]5}C@W@_  
} 46cd5SLK  
_mJnhT3  
改进后的归并排序: DHlCus=ic  
i-`n5,  
package org.rut.util.algorithm.support; R<jt$--H  
}+4^ZbX+:  
import org.rut.util.algorithm.SortUtil; <Fa]k'<^)  
PA(XdT{  
/** ZW0gd7Wh  
* @author treeroot 43 h0i-%1  
* @since 2006-2-2 xVn"xk  
* @version 1.0 qvH7otA  
*/ U*s QYt<?g  
public class ImprovedMergeSort implements SortUtil.Sort { 9OnH3  
%8a886;2  
private static final int THRESHOLD = 10; #}Qzu~  
 mOkf   
/* q`8M9-~  
* (non-Javadoc) 05cyWg9a  
* L| uoFG{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VaIFE~>E&  
*/ W%xg;uzp  
public void sort(int[] data) { ZFAi9M  
int[] temp=new int[data.length]; RN3-:Zd_X  
mergeSort(data,temp,0,data.length-1); l" #}g%E  
} F.0CJ7s  
&(] @L\A  
private void mergeSort(int[] data, int[] temp, int l, int r) { DFKumw>!  
int i, j, k; Z`=[hu  
int mid = (l + r) / 2; !5;A.f  
if (l == r) {{WA=\N8C  
return; t)*MLg<C  
if ((mid - l) >= THRESHOLD) ^K#PcPF-j  
mergeSort(data, temp, l, mid); UE[5Bw?4X  
else :q xd])-  
insertSort(data, l, mid - l + 1); dBKceL v  
if ((r - mid) > THRESHOLD) Sf2pU!5n^  
mergeSort(data, temp, mid + 1, r); Gqz<;y  
else =D2jJk?AX  
insertSort(data, mid + 1, r - mid); ;;9W/m~]  
Ie[8Iot?bn  
for (i = l; i <= mid; i++) { oTPPYi[r  
temp = data; -Tw96 dv  
} /"Bm1  
for (j = 1; j <= r - mid; j++) { 'ow`ej  
temp[r - j + 1] = data[j + mid]; <9]9;   
} =-r[ s%t &  
int a = temp[l]; 43"` gF]  
int b = temp[r]; kXmnLxhS/  
for (i = l, j = r, k = l; k <= r; k++) { QeK@ ++EVc  
if (a < b) { yj6o533o  
data[k] = temp[i++]; x>?jfN,e  
a = temp; E0miX)AG  
} else { $rAHtr  
data[k] = temp[j--]; |]d A`e&y  
b = temp[j]; \M H\!  
} 1kG{z;9  
} E,F'k2yU  
} 8Rgvb3u  
h@5mVTb}i  
/** ;^q@w  
* @param data oJcDs-!  
* @param l GWNLET  
* @param i y|BRAk&n  
*/ H8V${&!ho  
private void insertSort(int[] data, int start, int len) { CnJrJ>l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BI'}  
} FCC9Ht8U?  
} ,X[l C\1a  
} +bG^SH2ke  
} _B@=fY(g!  
;b(*Bh<  
堆排序: `CW I%V  
Osb#<9{}  
package org.rut.util.algorithm.support; mVg$z  
^ |k 7g  
import org.rut.util.algorithm.SortUtil; i@=0fHiZQ  
+1Qa7 \  
/** (v11;kdJB  
* @author treeroot 5B&#Sh`r  
* @since 2006-2-2 ,t`u3ykh  
* @version 1.0 kZ&|.q1zki  
*/ K3uNR w  
public class HeapSort implements SortUtil.Sort{ wABaNB=9;  
_Eus<c  
/* (non-Javadoc) .AIlv^:|U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?#OGH`ZvkI  
*/ ea"!:cL(g  
public void sort(int[] data) { Q\pTyNAYn  
MaxHeap h=new MaxHeap(); :[;]6;  
h.init(data); %^e~;i=2  
for(int i=0;i h.remove(); n"[VM=YGI  
System.arraycopy(h.queue,1,data,0,data.length); 83 O+`f  
} CdxEY  
E\3fL"lM  
private static class MaxHeap{ AqPE.mf  
qb^jcy  
void init(int[] data){ 2E V M*^A  
this.queue=new int[data.length+1]; 5Ocd2T'  
for(int i=0;i queue[++size]=data; {`2R<O  
fixUp(size); 'z'q)vcr  
}  .AEOf0t  
} Gi7jgv{{  
XCQS_'D  
private int size=0; udRum7XW 3  
3=6`'PKRQ  
private int[] queue; BXNt@%  
!$ $|zB%  
public int get() { XkB^.[B  
return queue[1]; ]_cBd)3P}  
} $~h\8  
tTWeOAF  
public void remove() { <SiD m-=E  
SortUtil.swap(queue,1,size--); "qL4D4  
fixDown(1); R|7yhsJq,  
} jft%\sY  
file://fixdown 6kW<i,A -  
private void fixDown(int k) { +&LzLF.bK  
int j; ]1A"l!yf  
while ((j = k << 1) <= size) { ' 0iXx   
if (j < size %26amp;%26amp; queue[j] j++; B;SN}I  
if (queue[k]>queue[j]) file://不用交换 ;aZ$qgN*Y  
break; ,vfi]_PK  
SortUtil.swap(queue,j,k); l2v4SvbX  
k = j; E)eRi"a46  
} 3t  
} "=cWcztiP  
private void fixUp(int k) { dXAKk[uf  
while (k > 1) { JCjQR`)  
int j = k >> 1; 19 h7 M  
if (queue[j]>queue[k]) IR*g>q  
break; 8no_xFA  
SortUtil.swap(queue,j,k); vn n4  
k = j; =bJj;bc'5  
} +r7uIwi$@  
} @@L@r6  
#UR4I2t*  
} g8 (zvG;Y  
7U#`^Q}  
} Vp =  
"=l<%em  
SortUtil: %@IZ41<C  
l26DPtWi  
package org.rut.util.algorithm; Dq/ _#&S  
v#iKa+tx  
import org.rut.util.algorithm.support.BubbleSort; TGnyN'P|  
import org.rut.util.algorithm.support.HeapSort; (mq 7{ ;7y  
import org.rut.util.algorithm.support.ImprovedMergeSort; P0m;AqS#R  
import org.rut.util.algorithm.support.ImprovedQuickSort; jEQr{X7bEL  
import org.rut.util.algorithm.support.InsertSort; "y R56`=  
import org.rut.util.algorithm.support.MergeSort; !!Tk'=t9"3  
import org.rut.util.algorithm.support.QuickSort; 1tvgM !.  
import org.rut.util.algorithm.support.SelectionSort; v:s.V>{"S  
import org.rut.util.algorithm.support.ShellSort; 6d~[My  
+MG(YP/ l  
/** WNkAI9B  
* @author treeroot QJFx/zU  
* @since 2006-2-2 *uYnu|UQH  
* @version 1.0 F(E3U'G  
*/ F{*S}&q*)o  
public class SortUtil { `Q2 `":  
public final static int INSERT = 1; 'T54k  
public final static int BUBBLE = 2; 8+Lig  
public final static int SELECTION = 3; - #]?3*NO  
public final static int SHELL = 4; f o])=KM  
public final static int QUICK = 5; yb BLBJb  
public final static int IMPROVED_QUICK = 6; 6[BQx)7T  
public final static int MERGE = 7; wyO@oi Vn  
public final static int IMPROVED_MERGE = 8; m ys5B}  
public final static int HEAP = 9; "rz|sbj  
\LB =_W$  
public static void sort(int[] data) { kq6K<e4jO  
sort(data, IMPROVED_QUICK); 4kO[|~#  
} ^n5[pF}Gw  
private static String[] name={ Ou IoO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  5#JGNxO  
}; (;=:QjaoZ  
]saf<?fzr  
private static Sort[] impl=new Sort[]{ PezUG{q(  
new InsertSort(), _5Q?]-M  
new BubbleSort(), d )|{iUcW  
new SelectionSort(), Z(AI]wk3<  
new ShellSort(), S5ka;g  
new QuickSort(), =LJc8@<:f  
new ImprovedQuickSort(), }fw;{&s{z  
new MergeSort(), _+ K[1P  
new ImprovedMergeSort(), U6qv8*~  
new HeapSort() .)^@[yrkz  
}; $NP5Z0v7  
}~dXz?{p8  
public static String toString(int algorithm){ Uh}n'Xd#{}  
return name[algorithm-1]; .E|Hk,c9  
} ,J?Hdy:R  
cOra`7L`  
public static void sort(int[] data, int algorithm) { "iE9X.6NMu  
impl[algorithm-1].sort(data); sqHv rI  
} }NPF]P;  
rAD5n, M]  
public static interface Sort { yG58?5\9  
public void sort(int[] data); SV.\B  
} }AG$E}~/  
Ltpd:c  
public static void swap(int[] data, int i, int j) { ~*-ar6  
int temp = data; 9z 5K  -s  
data = data[j]; M*| y&XBe  
data[j] = temp; (5?5? <  
} o9M[Zr1@k  
} k%#`{#n i  
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