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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。 !UD62yw~  
插入排序: A>$VkGo  
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package org.rut.util.algorithm.support; QJo)  
Xu$xO(  
import org.rut.util.algorithm.SortUtil; -pj&|< h+9  
/** 2F3IC  
* @author treeroot Mz<4P3"H  
* @since 2006-2-2 mj<(qZh  
* @version 1.0 {W }.z  
*/ "JSg/optc  
public class InsertSort implements SortUtil.Sort{ 7g5sJj  
+V&b<y;?>  
/* (non-Javadoc) ;0}$zy1EZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /40Z-'Bl=(  
*/ W;,.OoDc>  
public void sort(int[] data) { pN&Dpz^  
int temp; g!7/iKj:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o:#MP(h,N  
} zp4Jd"XBX  
} e(BF=gesgp  
} {so"xoA^c  
@4h .?  
} IBU(Hm1,  
m4ovppC  
冒泡排序: K 3?7Hndf2  
QQ97BP7W  
package org.rut.util.algorithm.support; >  K,Q`sS  
E'$r#k:o  
import org.rut.util.algorithm.SortUtil; #HB]qa  
!l_ 1r$  
/** _p7c<$ ;  
* @author treeroot p[&'*"o!/  
* @since 2006-2-2 IQdiVj  
* @version 1.0 D<}KTyG]  
*/ v4(!~S  
public class BubbleSort implements SortUtil.Sort{ Gw3|"14  
Te2XQU2,F  
/* (non-Javadoc) Rs8`M8(4%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D(}v`q{Y  
*/ npz*4\4  
public void sort(int[] data) { suaTXKjyk+  
int temp; S8<O$^L^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R{@WlkG}  
if(data[j] SortUtil.swap(data,j,j-1); hti)<#f  
} "VkraB.i  
} $t-HJ<!  
} .BlGV2@^#  
} zF(I#|Vo  
s9qr;}U.`  
} j; 1X-  
O} QTg  
选择排序: +=Crfvt  
,/|"0$p2x  
package org.rut.util.algorithm.support; Q9X_aB0  
GKtG#jZ&  
import org.rut.util.algorithm.SortUtil; $~50M5&K#  
Oh~J yrZy  
/** xc8MOm  
* @author treeroot F^&_O*"  
* @since 2006-2-2 6\g]Y  
* @version 1.0 0NZg[>H  
*/ hI;tB6  
public class SelectionSort implements SortUtil.Sort { {?l#*XH;  
` *8p T  
/* z`xdRe{QP  
* (non-Javadoc) o{?s\)aBa  
* DK&J"0jz,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LnxJFc:1K  
*/ Wze\z  
public void sort(int[] data) { CP'?Om2  
int temp; %ztCcgu*  
for (int i = 0; i < data.length; i++) { JpD<2Mz_|V  
int lowIndex = i; lz faW-nu  
for (int j = data.length - 1; j > i; j--) { ]U! ?{~  
if (data[j] < data[lowIndex]) {  EP'2'51  
lowIndex = j; B:a&)L wp0  
} %[-D&flKC  
} U=QV^I Qm  
SortUtil.swap(data,i,lowIndex); =5oE|F%  
} ,S2D/Y^>  
} H{E223  
%rzC+=*;  
} 7$a,pNDw  
65\'(99y U  
Shell排序: %w=*4!NWb  
O]~cv^  
package org.rut.util.algorithm.support; VW I{ wC  
=\ iV=1iB  
import org.rut.util.algorithm.SortUtil; !BP/#  
"D2 `=D!+  
/** ,*Tf9=z  
* @author treeroot !TVlsm  
* @since 2006-2-2 O2us+DhQ  
* @version 1.0 lSUEE0V%Q  
*/ J p!Q2}  
public class ShellSort implements SortUtil.Sort{ *ELbz}Q  
C3u/8Mrt7  
/* (non-Javadoc) )Pakb!0H@t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lDnF(  
*/ sikG}p0mx<  
public void sort(int[] data) { =m:xf&r#  
for(int i=data.length/2;i>2;i/=2){ w [D9Q=  
for(int j=0;j insertSort(data,j,i); ^9%G7J:vGO  
} tz)aQ6p\X  
} R^<li;Km  
insertSort(data,0,1); p}.L]Y  
} ow!utAF  
xJa  
/** -[|R \'i  
* @param data Nj5Mc>_   
* @param j 'mXf8   
* @param i 3u^U\xB  
*/ yJ c#y   
private void insertSort(int[] data, int start, int inc) { 5(^&0c>P  
int temp; |yx]TD{~P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q.>@w<[!L  
} <[@AMdS  
} )/1AF^ E  
} >u ,Ac:  
D kl4 ^}  
} JQj?+PI  
4%LGP h  
快速排序: %YlL-*7 L  
L%}k.)yev  
package org.rut.util.algorithm.support; "G].hKgbk*  
)pJ} $[6  
import org.rut.util.algorithm.SortUtil; y>_lxLhmO#  
J70#pF  
/** (, /`*GC  
* @author treeroot CH[U.LJQ-O  
* @since 2006-2-2 )q 8w+'z  
* @version 1.0 JcL4q\g  
*/ :3pJGMv(  
public class QuickSort implements SortUtil.Sort{ 5 >S #ew  
=&;orP  
/* (non-Javadoc) yl/-!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zRd^Uks  
*/ o|YY,G=C  
public void sort(int[] data) { (/UW}$] h  
quickSort(data,0,data.length-1); ijEMS1$=7  
} _CO?HX5ek  
private void quickSort(int[] data,int i,int j){ hCVe05  
int pivotIndex=(i+j)/2; N DZ :`D  
file://swap 1@rI4U@D  
SortUtil.swap(data,pivotIndex,j); v;AsV`g  
HQJ_:x Y  
int k=partition(data,i-1,j,data[j]); h+<vWo}H  
SortUtil.swap(data,k,j); m-Q!V+XQp  
if((k-i)>1) quickSort(data,i,k-1); it.Lh'N;T  
if((j-k)>1) quickSort(data,k+1,j); E #q gt9  
8[\F*H  
} Yj3j?.JJk  
/** M!Q27wT8 O  
* @param data F6 ?4&h?n  
* @param i <E/4/ ANN  
* @param j s!(O7Ub  
* @return &TJMopVn  
*/ X|zQZ<CO  
private int partition(int[] data, int l, int r,int pivot) { Hof@,w  
do{ W=:4I[a6Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )c!7V)z  
SortUtil.swap(data,l,r); "HX,RJ @^K  
} XHs>Q>`  
while(l SortUtil.swap(data,l,r); s.7\?(Lg  
return l; W^#HR  
} {9:[nqX  
B3|h$aKC  
} P'%#B&LZo  
dO]N&'P7  
改进后的快速排序: R+{QZ'K.qg  
{w:*t)@j  
package org.rut.util.algorithm.support; U4)x"s[CP  
:0@R(ct;>  
import org.rut.util.algorithm.SortUtil; Sk7l&B  
nb-]fa  
/** %3b;`Oa  
* @author treeroot ^/@Z4(E  
* @since 2006-2-2 {9?++G"\  
* @version 1.0 :5|'C  
*/ R9XISsM^  
public class ImprovedQuickSort implements SortUtil.Sort { WK$75G,  
-' :;0  
private static int MAX_STACK_SIZE=4096; ykK21P,v  
private static int THRESHOLD=10; RP[^1  
/* (non-Javadoc) 2E5n07,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +g %h,@  
*/ !|4fww  
public void sort(int[] data) { WXHvUiFf  
int[] stack=new int[MAX_STACK_SIZE]; LX f r  
SB~HHx09  
int top=-1; )(bAi  
int pivot; o]T-7Gs4p  
int pivotIndex,l,r; ^97u0K3$  
^4MRG6G  
stack[++top]=0; Q /D?U[G  
stack[++top]=data.length-1; JTGA\K  
D)shWJRlvW  
while(top>0){ wavyREK   
int j=stack[top--]; MpY/G%3  
int i=stack[top--]; &[ oW"Q{  
1. A@5*Q  
pivotIndex=(i+j)/2; efzS]1Jpz  
pivot=data[pivotIndex]; RJ}%pA4I  
yM,.{m@F<  
SortUtil.swap(data,pivotIndex,j); . -ihxEbzr  
;ctPe[5  
file://partition *<HA])D,  
l=i-1; eBT+|  
r=j; CgT5sk}  
do{ {7d(B1[1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <S[]VXy  
SortUtil.swap(data,l,r); [D2<)  
} t**MthnW  
while(l SortUtil.swap(data,l,r); c~u91h?  
SortUtil.swap(data,l,j); BBa!l e9P  
{R?VB!dR  
if((l-i)>THRESHOLD){ ")9jt^  
stack[++top]=i; H3+P;2 {  
stack[++top]=l-1; 465?,EpS  
} vF9fXY=  
if((j-l)>THRESHOLD){ byPqPSY  
stack[++top]=l+1; \?vn0;R4  
stack[++top]=j; !d&SVS^mo  
} y>0Gmr  
FiKGB\_]  
} ?u>A2Vc!  
file://new InsertSort().sort(data); %*OQH?pyx}  
insertSort(data); 0zE(:K  
} Iz8gZ:rd0  
/** 2E0oLl[  
* @param data D~)bAPAD  
*/ |y4j:`@.  
private void insertSort(int[] data) { /L=Y8tDt  
int temp; as"@E>a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @b{$s  
} wZt2%+$6m  
} \hP.Q;"MtO  
} 2FQTu*p&B  
>aT~ G!y  
} *2 ~"%"C  
p21li}Iu  
归并排序: ~7:Q+ 0,,  
Qp+M5_  
package org.rut.util.algorithm.support; u<EPK*O*  
uP.dCs9-  
import org.rut.util.algorithm.SortUtil;  tk+4noA  
Zou;o9Ww  
/** a~Yq0d?`D  
* @author treeroot %v[KLMo'(  
* @since 2006-2-2 9>= S@hVMd  
* @version 1.0 ]xPy-j6C  
*/ ^G NL:D%6d  
public class MergeSort implements SortUtil.Sort{ 36}&{A  
V0xO:7G^  
/* (non-Javadoc) EAoq2_(`a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  NG?g(  
*/ T>w;M?`9K  
public void sort(int[] data) { 8Yf=)  
int[] temp=new int[data.length]; cC9haxW  
mergeSort(data,temp,0,data.length-1); EPU3Jban  
} [0lO0ik>G  
.:=5|0m  
private void mergeSort(int[] data,int[] temp,int l,int r){ rN'}IS@5  
int mid=(l+r)/2; \{= {{O  
if(l==r) return ; fa!8+kfi  
mergeSort(data,temp,l,mid); >^D5D%"  
mergeSort(data,temp,mid+1,r); =oTj3+7  
for(int i=l;i<=r;i++){ fDAT#nlyp  
temp=data; 6ipQx/IQ  
} ~-'-<-  
int i1=l; gSkY c{b  
int i2=mid+1; wI?AZd;`'  
for(int cur=l;cur<=r;cur++){ _+}f@&"  
if(i1==mid+1) oo|Nu+  
data[cur]=temp[i2++]; %$=2tfR  
else if(i2>r) fni7HBV?  
data[cur]=temp[i1++]; OV`li#H  
else if(temp[i1] data[cur]=temp[i1++]; J:G{  
else cyB2=,  
data[cur]=temp[i2++]; BzTzIo5  
} @>`qfy?  
} fYlqaO4[  
dg&GMo  
} S2EV[K8#  
o0TB>DX$`  
改进后的归并排序: b{;LbHq+G  
$Km~x  
package org.rut.util.algorithm.support; x M{SFF  
7{38g  
import org.rut.util.algorithm.SortUtil; K;]Dh?  
9&{HD  
/** PNH>LT^  
* @author treeroot M6y|;lh''c  
* @since 2006-2-2 'rrnTd c  
* @version 1.0 VP*B<u  
*/ ps33&  
public class ImprovedMergeSort implements SortUtil.Sort { !\\OMAf7  
@/xdWN!,  
private static final int THRESHOLD = 10; ld#YXJ;P.k  
{Rn*)D9  
/* j9.%(*  
* (non-Javadoc) iYGa4@/uM  
* [XkWPx`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B?ipo,2~{  
*/ Nzb=h/;  
public void sort(int[] data) { umt(e:3f5  
int[] temp=new int[data.length]; -/_hO$|W  
mergeSort(data,temp,0,data.length-1); le6eorK8  
} 0Z{u;FI  
G> s qfYkK  
private void mergeSort(int[] data, int[] temp, int l, int r) { mteQRgC  
int i, j, k; {"O-/* f+(  
int mid = (l + r) / 2; \mqrDaB  
if (l == r) NRI[|  
return; eh, _g.  
if ((mid - l) >= THRESHOLD) ;rl61d}NH#  
mergeSort(data, temp, l, mid); ~I]aUN  
else O~Svk'.)  
insertSort(data, l, mid - l + 1); ?gCP"~  
if ((r - mid) > THRESHOLD) v)nBp\fjxp  
mergeSort(data, temp, mid + 1, r); %&eBkN!T  
else 6iY(RYZ7-  
insertSort(data, mid + 1, r - mid); zUWeOR'X  
 SPnW8  
for (i = l; i <= mid; i++) { 0 > QqsQ  
temp = data; 9{%/I   
} Z>*a:|  
for (j = 1; j <= r - mid; j++) { L%Ms?`i,  
temp[r - j + 1] = data[j + mid]; sTvw@o *  
} uEkGo5  
int a = temp[l]; D8`SI2 1P  
int b = temp[r]; Nj +^;Y  
for (i = l, j = r, k = l; k <= r; k++) { DIgur}q)@  
if (a < b) { W>u{JgY  
data[k] = temp[i++]; sHQO*[[  
a = temp; 9TEAM<b;  
} else { J\Tu=f)  
data[k] = temp[j--]; vnqLcNB H  
b = temp[j];  3bHB$n  
} (W#^-*$R  
} rpEN\S%7P  
} ~SI G0U8  
;8b!T -K  
/** 3!8u  
* @param data $5DlCN  
* @param l M2nUY`%#v  
* @param i 9&s>RJ  
*/ J 2k4k  
private void insertSort(int[] data, int start, int len) { 28j/K=0(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vZPBjloT!.  
} WsT   
} W)L*zVj~  
} pz"}o#R"x  
} - x;xQ  
2`Ihrz6  
堆排序: k|$?b7)"@  
bpa'`sf  
package org.rut.util.algorithm.support; 6cOlY= bn  
m14'u GC  
import org.rut.util.algorithm.SortUtil; <VhD>4f{]  
wWM[Hus  
/** /$9We8  
* @author treeroot W *2P+H%  
* @since 2006-2-2 "YVr/u  
* @version 1.0 Y4[oa?G  
*/ k h6n(B\  
public class HeapSort implements SortUtil.Sort{ f[?JLp   
@0%[4  
/* (non-Javadoc) *DQa6,b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /)sP<WPQ 6  
*/ F6_e n z  
public void sort(int[] data) {  hRqr  
MaxHeap h=new MaxHeap(); H`jnChD:M'  
h.init(data); B/Ltb^a  
for(int i=0;i h.remove(); s0DT1s&  
System.arraycopy(h.queue,1,data,0,data.length); 'f8'|o)  
} ;_0frX  
$y%IM`/w  
private static class MaxHeap{ GE=PaYz  
"d2JNFIHb  
void init(int[] data){ 1! 5VWF0  
this.queue=new int[data.length+1]; #VsS C1  
for(int i=0;i queue[++size]=data; tD,I7%|@  
fixUp(size); @S 0mNA  
} CtZOIx.;|  
} \5j#ad  
q``/7  
private int size=0; -] G=Q1 1  
X2{Aa T*M  
private int[] queue; )[ejb?{d  
8[#EC3  
public int get() { U[z2{\  
return queue[1]; V;hO1xfR3&  
} Uy@:-NC)kn  
z`,dEGfh^  
public void remove() { j.c{%UYj  
SortUtil.swap(queue,1,size--); x+v&3YF  
fixDown(1); [kMWsiZ  
} ^?|d< J:{  
file://fixdown U|8?$/*\  
private void fixDown(int k) { |o@U L  
int j; #k,.xMJ~  
while ((j = k << 1) <= size) { 0n\AUgVPF  
if (j < size %26amp;%26amp; queue[j] j++; WP'.o  
if (queue[k]>queue[j]) file://不用交换 "`h.8=-  
break; COj^pdE3  
SortUtil.swap(queue,j,k); >O0<u  
k = j; ,[3}t%Da  
} fP 3t0cp  
} PJ,G_+b!  
private void fixUp(int k) { (-VH=,Md  
while (k > 1) { f`8?]@y{  
int j = k >> 1; B;nIKZ  
if (queue[j]>queue[k]) B7sBO6Z$J  
break; -fN5-AC  
SortUtil.swap(queue,j,k); 40[@d  
k = j; (0Jr<16si$  
} Pfd%[C/vdm  
} fS p  
2>f3n W  
} g"`jWSt7Q  
3N4kW[J2i  
} [WXcp1p  
<RcB: h  
SortUtil: -h=wLYl@0i  
'@5 x=>  
package org.rut.util.algorithm; 5?|y%YH;R\  
%v UUx+  
import org.rut.util.algorithm.support.BubbleSort; 8"rK  
import org.rut.util.algorithm.support.HeapSort; EJNHZ<  
import org.rut.util.algorithm.support.ImprovedMergeSort; V0n8fez b  
import org.rut.util.algorithm.support.ImprovedQuickSort; #TcX5  
import org.rut.util.algorithm.support.InsertSort; yZb})4.  
import org.rut.util.algorithm.support.MergeSort; r]Lj@0F>8  
import org.rut.util.algorithm.support.QuickSort; Oq(FV[N7t  
import org.rut.util.algorithm.support.SelectionSort; cQ3p|a `  
import org.rut.util.algorithm.support.ShellSort; B_C."{G  
0^6}s1d_  
/** <SdOb#2  
* @author treeroot #c9MVQ_   
* @since 2006-2-2 b#n  
* @version 1.0 65tsJ"a<  
*/ >f D%lq;  
public class SortUtil { Ex6Kxd}8  
public final static int INSERT = 1; R<^E?FI   
public final static int BUBBLE = 2; 9f CU+s  
public final static int SELECTION = 3; bNHs jx@  
public final static int SHELL = 4; TQOJN  
public final static int QUICK = 5; 2}_^~8  
public final static int IMPROVED_QUICK = 6; HUbXJsSP  
public final static int MERGE = 7; M7#CMLy  
public final static int IMPROVED_MERGE = 8; 6=x]20  
public final static int HEAP = 9; hMgk+4*  
Fxn=+Xgg  
public static void sort(int[] data) { gx2v(1?S  
sort(data, IMPROVED_QUICK); D'Uc?2X,&  
} SCjVzvG$yg  
private static String[] name={ JB!*{{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xXJzE|)1h!  
}; M >i *e  
u3DFgl3-7  
private static Sort[] impl=new Sort[]{ g@ ]1H41  
new InsertSort(), d <zD@ z  
new BubbleSort(), BWr!K5w>i  
new SelectionSort(), B)dd6R>8  
new ShellSort(), mS.!lkV  
new QuickSort(), Ds@K%f(.?w  
new ImprovedQuickSort(), B5_QH8kt7  
new MergeSort(), ssmJ?sl  
new ImprovedMergeSort(), `.wgRUhFH;  
new HeapSort() 7w\!3pv  
}; (~(FQ:L %U  
swMR+F#u*  
public static String toString(int algorithm){ S<5.}cR  
return name[algorithm-1]; >n1UK5QD  
} |=W>4>  
[P]M)vJ**  
public static void sort(int[] data, int algorithm) { Q[lkhx|.B  
impl[algorithm-1].sort(data); &m{~4]qWpM  
} 3Q,p,  
McN'J. Sxp  
public static interface Sort { Rli`]~!w  
public void sort(int[] data); #t VGqf  
} R^.c  
z[JM ]Wy  
public static void swap(int[] data, int i, int j) { }( WUZ^L  
int temp = data; 5UQ[vHMqI  
data = data[j]; OQDx82E  
data[j] = temp; fL gHQ  
} YT@N$kOg_  
} ]ij:>O@{$  
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