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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。 =svFw&q"  
插入排序: FH</[7f;@N  
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package org.rut.util.algorithm.support; 0>[]Da}  
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import org.rut.util.algorithm.SortUtil; |AvPg  
/** D;sG9Hky  
* @author treeroot 0hY3vBQ!  
* @since 2006-2-2 yp~z-aRa  
* @version 1.0 (-<hx~  
*/ '`8 ^P  
public class InsertSort implements SortUtil.Sort{ o0Teect=  
ru:"c^W:[  
/* (non-Javadoc) G[}v?RLI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u<j;+-]8h  
*/ 8P ]nO+  
public void sort(int[] data) { ^*jwe^  
int temp;  $H*8H`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u ?V}pYX  
} @@ j\OR  
} 1_7p`Gxt[/  
} 2K4Xu9-i:b  
<v1H1'gv  
} L IKuK#  
[C!*7h  
冒泡排序: "Lvk?k )hx  
E}Cz(5  
package org.rut.util.algorithm.support; [l=@b4Og  
,RV>F_  
import org.rut.util.algorithm.SortUtil; nLL2/!'n  
.QY>@b\  
/** i59 }6u_f  
* @author treeroot -|x7<$Hw  
* @since 2006-2-2 -.Wwo(4  
* @version 1.0 drpx"d[c  
*/ G!%m~+",  
public class BubbleSort implements SortUtil.Sort{ n)N!6u  
x~k3kj  
/* (non-Javadoc) #ChTel  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2fdN@iruB  
*/ 9q]f]S.L  
public void sort(int[] data) { `*[Kmb\  
int temp; PY|zN|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZQ"dAR/y  
if(data[j] SortUtil.swap(data,j,j-1); I484c R2.  
} mN-O{k0\  
} +:Xg7H*  
} FM%WMyb[  
} UhR^Y{W5  
wsdZwik  
} sudh=_+>  
&$ }6:  
选择排序: eP (*.  
q AVypP?J  
package org.rut.util.algorithm.support; |>P:R4P  
[ `|t(E'  
import org.rut.util.algorithm.SortUtil; /#5rt&q  
HM(X8iNt  
/** hxdjmc-  
* @author treeroot kM-8%a2i  
* @since 2006-2-2 vEjf|-Mb9  
* @version 1.0 R;,5LS&*a  
*/ shGUG;  
public class SelectionSort implements SortUtil.Sort { _I)TO_L;  
uv5NqL&  
/* q'fOlq  
* (non-Javadoc) RJ'za1@z;b  
* "r`2V-E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Kmz urG  
*/ NI/'SMj%  
public void sort(int[] data) { @Y,t]  
int temp; Q?hf2iw  
for (int i = 0; i < data.length; i++) { %#fjtbeB  
int lowIndex = i; ka=A:biz  
for (int j = data.length - 1; j > i; j--) { A|Ft:_Y  
if (data[j] < data[lowIndex]) { ZYY`f/qi  
lowIndex = j; qAp <OJ  
} AW;xlY= g  
} Sc3{Y+g  
SortUtil.swap(data,i,lowIndex);  8\nka5  
} :bo2H[U+  
} "z6p=B"?3  
D=LsoASVI  
} Ww~C[8q  
+dCR$<e9r  
Shell排序: bfUKh%!M  
j*?E~M.'1K  
package org.rut.util.algorithm.support; ?gu!P:lZS  
GQ85ykky  
import org.rut.util.algorithm.SortUtil; Tb^1#O  
%X}D(_  
/** J*ofa>  
* @author treeroot lX.1B&T9Lr  
* @since 2006-2-2 |-v/  
* @version 1.0 UU}Hs}  
*/ A?-t`J  
public class ShellSort implements SortUtil.Sort{ /:-ig .YY  
; p+C0!B2  
/* (non-Javadoc) \k$cg~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eVj 8u  
*/ o7gZc/?n  
public void sort(int[] data) { .$f0!` t  
for(int i=data.length/2;i>2;i/=2){ , iEGf-!k  
for(int j=0;j insertSort(data,j,i); 8~!h8bkC  
} sw$JY}Q8x  
} MB5V$toC  
insertSort(data,0,1); >!PM5%G  
} mE+=H]`.p  
PMiu "  
/** ?mi}S${g  
* @param data `&)  
* @param j 7lOAu]Zx  
* @param i Q=<&ew  
*/ u3cg&lEgT  
private void insertSort(int[] data, int start, int inc) { >7?Lq<H  
int temp; 0/fwAp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F&k<P>k  
} e Z L!Z!  
} Ug[0l)  
} T_\hhP~  
p-oEoA  
} AHa]=ka>  
C-:|A* z  
快速排序: < A`srmS?  
Q>z (!'dw  
package org.rut.util.algorithm.support; (-o}'l'mo  
SQ/}K8uZ  
import org.rut.util.algorithm.SortUtil; G{+zKs}~  
gYpFF=7j<@  
/** :p1_ij]ND  
* @author treeroot Oxi^&f||`  
* @since 2006-2-2 AAi4} 8+\  
* @version 1.0 gxDyCL$h3  
*/ 1"l48NLL|  
public class QuickSort implements SortUtil.Sort{ b^~4k; <  
So NgDFD  
/* (non-Javadoc) wG 5H^>6u>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U d+6=Us{  
*/ U,< ?]h  
public void sort(int[] data) { q)"yP\  
quickSort(data,0,data.length-1); M VE:JNm  
} xM&`>`;^e  
private void quickSort(int[] data,int i,int j){ 4SkCV  
int pivotIndex=(i+j)/2; EBmkKiI;  
file://swap ?;rRR48T9E  
SortUtil.swap(data,pivotIndex,j); 9:!V":8q  
{FN CC*=  
int k=partition(data,i-1,j,data[j]); %zjyZ{=  
SortUtil.swap(data,k,j); 4f213h  
if((k-i)>1) quickSort(data,i,k-1); }.A \;FDyj  
if((j-k)>1) quickSort(data,k+1,j); {o %OG/!1  
UJ)( Sw  
} OQ3IkE`G  
/** b\SB  
* @param data oPxh+|0?  
* @param i I_`$$-|  
* @param j 2N&S__  
* @return )uCa]IR  
*/ / 7 R0w  
private int partition(int[] data, int l, int r,int pivot) { 9 b&HqkXX  
do{ W 6R/{H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;3 =RM\  
SortUtil.swap(data,l,r); A2nL=9~   
} O2~Q(q'   
while(l SortUtil.swap(data,l,r); x,<|<W5<%  
return l; Gbb*p+ (  
} wem hP8!gc  
dsZ-|C  
} KctbNMU]k  
2 o5u02x  
改进后的快速排序: T\TKgO=)  
7] >z e  
package org.rut.util.algorithm.support; ~kZ? e1H  
a^)@ }4  
import org.rut.util.algorithm.SortUtil; ZGS4P0$  
c*V/2" 5  
/** Q/l388'  
* @author treeroot 0fw>/"v  
* @since 2006-2-2 Zx|VOl,;  
* @version 1.0 GS,}]c=  
*/ Ye\ &_w"  
public class ImprovedQuickSort implements SortUtil.Sort { [58qC:  
:W[d&e  
private static int MAX_STACK_SIZE=4096; KhNE_. Z  
private static int THRESHOLD=10; =nUzBL%~  
/* (non-Javadoc) ;+~Phdy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tIW~Ng  
*/ j[$+hh3:  
public void sort(int[] data) { RAoY`AWI  
int[] stack=new int[MAX_STACK_SIZE]; q:P44`Aq  
XNkZ^3mq  
int top=-1; .#Lu/w' -M  
int pivot; B|kIiL63 D  
int pivotIndex,l,r; q!) nSD  
A{wSO./3  
stack[++top]=0; &bwI7cO  
stack[++top]=data.length-1; eq4Yc*|9  
M^y5 Dep  
while(top>0){ ugQySg>  
int j=stack[top--]; GOY!()F  
int i=stack[top--]; 4#D>]AX  
%xN91j["  
pivotIndex=(i+j)/2; !?GW<Rh  
pivot=data[pivotIndex]; LE+#%>z>  
7eyx cr;z  
SortUtil.swap(data,pivotIndex,j); jY $3   
_vOSOnU  
file://partition a_Z[@W  
l=i-1; ~J1UzUxX2  
r=j; K;~I ;G  
do{ 3\?yjL^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6;}W)S  
SortUtil.swap(data,l,r); 0?,%B?A8O  
} TE@bV9a  
while(l SortUtil.swap(data,l,r); ds'7zxy/  
SortUtil.swap(data,l,j); cD9axlJ  
I~>Ye<g#  
if((l-i)>THRESHOLD){ ]= 9^wS  
stack[++top]=i; j.g9O]pi  
stack[++top]=l-1; 71k >_'fl  
} KqWt4{\8v`  
if((j-l)>THRESHOLD){ w4;1 ('  
stack[++top]=l+1; b^&nr[DC  
stack[++top]=j; }&/_ S  
} +#7)'c  
T']G:jkb  
} 2PEA<{u  
file://new InsertSort().sort(data); pa6-3c  
insertSort(data); F)uS2  
} c~n:xblv  
/** <):= mr7  
* @param data ; Ne|H$N  
*/ j%Z%_{6Ds*  
private void insertSort(int[] data) { S!.H _=z%p  
int temp; <izn B8@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oz?pE[[tm  
} u|M_O5^  
} oGqbk x  
} j# !U6T  
oTxE]a,  
} e'5sT#T9l  
S,^)\=v  
归并排序: r( 8!SVX  
1zJ)x?  
package org.rut.util.algorithm.support; "' ]|o~B  
c>yqq'  
import org.rut.util.algorithm.SortUtil; //- ;uEO  
0tp3mYd  
/** +jGSD@32>  
* @author treeroot ])$Rw $`w  
* @since 2006-2-2 %j2ZQ/z  
* @version 1.0 uxD$dd?  
*/ .a]9rQQ&_  
public class MergeSort implements SortUtil.Sort{ L [=JHW  
P^& =L&U  
/* (non-Javadoc) (@;=[5+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gSXidh}^  
*/ :B5M#D!dO  
public void sort(int[] data) { ^U]B&+m  
int[] temp=new int[data.length]; ;wj8:9 ;  
mergeSort(data,temp,0,data.length-1); M%qHf{ B  
} :6y;U  
K}9c$C4  
private void mergeSort(int[] data,int[] temp,int l,int r){ \"?5CHz*  
int mid=(l+r)/2; MXGz_Db4'  
if(l==r) return ; Gil mJ2<  
mergeSort(data,temp,l,mid); Kz2s{y~?  
mergeSort(data,temp,mid+1,r); s|o+ Im  
for(int i=l;i<=r;i++){ 4~mmP.c  
temp=data; ^Qa!{9o[  
} xHi.N*~D  
int i1=l; m}o4Vr;"  
int i2=mid+1; ;]sbz4?  
for(int cur=l;cur<=r;cur++){ &u~#bDh  
if(i1==mid+1) clO9l=g  
data[cur]=temp[i2++]; h!q_''*;  
else if(i2>r) $ {5|{`  
data[cur]=temp[i1++]; !ui:0_  
else if(temp[i1] data[cur]=temp[i1++]; <5:`tC2  
else Z<@dM2b)  
data[cur]=temp[i2++]; /{*0 \`;  
} Eao^/MKx-  
} [7@9wa1v!  
bz\-%$^k  
} )lDmYt7me  
F*j0o +B5  
改进后的归并排序: E e 15Y$1  
(bo-JOOdY(  
package org.rut.util.algorithm.support; CKr5L  
?)?}^  
import org.rut.util.algorithm.SortUtil; x{#W84  
k{-#2Qz  
/** QeNN*@ ='i  
* @author treeroot k*uLjU  
* @since 2006-2-2 6Dz N.fz  
* @version 1.0 )HJ#|JpxC  
*/ u5E\wRn  
public class ImprovedMergeSort implements SortUtil.Sort { t @vb3  
P&}J (;Lbl  
private static final int THRESHOLD = 10;  mB<*we  
?$Jj^/luD  
/* RA$q{$arb  
* (non-Javadoc) VFLW @  
* \ICc?8oL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y;xY74Nq  
*/ 8\B]!  
public void sort(int[] data) { Gx/kel[Y}  
int[] temp=new int[data.length]; @z1pE@7jK  
mergeSort(data,temp,0,data.length-1); kYnp$8  
} '4]_~?&x  
r0(*]K:.  
private void mergeSort(int[] data, int[] temp, int l, int r) { uwo\FI  
int i, j, k; d_aHUmI^"  
int mid = (l + r) / 2; $s"{C"4q  
if (l == r) } za "rU  
return; c= #V*<  
if ((mid - l) >= THRESHOLD) : oO ?A  
mergeSort(data, temp, l, mid); "1|\V.>>;  
else %E*Q0/  
insertSort(data, l, mid - l + 1); o#9 Q   
if ((r - mid) > THRESHOLD) }(/\vTn*1  
mergeSort(data, temp, mid + 1, r); g=L80$1  
else (,OF<<OH  
insertSort(data, mid + 1, r - mid); 3+oGR5gIN  
pRH'>}rtuH  
for (i = l; i <= mid; i++) { "'v^X!"  
temp = data; T3,}CK#O   
} L. DD  
for (j = 1; j <= r - mid; j++) { +\)a p  
temp[r - j + 1] = data[j + mid]; 3:"w"0[K3  
} ~Y3X*  
int a = temp[l]; i.Z iLDs\7  
int b = temp[r]; 20?@t.aMp  
for (i = l, j = r, k = l; k <= r; k++) { pi;'!d[l%  
if (a < b) { =:;K nS  
data[k] = temp[i++]; 0I['UL^!F  
a = temp; br%l>Y\"  
} else { %:e.ES  
data[k] = temp[j--]; nN5fP<H2x  
b = temp[j]; o9]i {e>L  
} 2wwJ>iR`  
} O 8XHaVLg3  
} *~0U4kw+  
7Xf52\7n  
/** K n,td:(  
* @param data 9>9,   
* @param l yV?qX\~*  
* @param i OWT|F0.1$k  
*/ w9TE E,t;5  
private void insertSort(int[] data, int start, int len) { = :BTv[lv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N~~ sM"n  
} hMnm>  
} ;b_l/T(  
} ?Sr7c|a2  
} 0)rayzv  
bYBEh n  
堆排序: $Ts;o  
i|[**P  
package org.rut.util.algorithm.support; ],s{%a5wC  
sf"vii,1A  
import org.rut.util.algorithm.SortUtil; t-Uo  
#\Zr$?t|V  
/** eI,H  
* @author treeroot 2{<o1x,Ym  
* @since 2006-2-2 \![ p-mW{  
* @version 1.0 * -(8Z>9  
*/ 6{!Cx9V  
public class HeapSort implements SortUtil.Sort{ DM,)nh6'  
kgh0  
/* (non-Javadoc) s;cGf+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nrg$V>pD  
*/ 2p~}<B  
public void sort(int[] data) { OJiwI)a9  
MaxHeap h=new MaxHeap(); :!ablO~  
h.init(data); WG*),P?  
for(int i=0;i h.remove(); A DVUx}  
System.arraycopy(h.queue,1,data,0,data.length); ZI.Czzx\=  
} +Jh1D_+!9  
 h@PE:=  
private static class MaxHeap{ Ot`znJU@  
Q^bYx (r5w  
void init(int[] data){ J`[gE`d  
this.queue=new int[data.length+1]; 83J6 3Xa  
for(int i=0;i queue[++size]=data; 28qlp>U  
fixUp(size); {krBAz&  
} %,(X R`  
} @FZbp  
^.9Df A0  
private int size=0; ?j&ZzK'#^  
 |A\o  
private int[] queue; C5g9Gg  
! (Q[[M  
public int get() { $0k7W?tu  
return queue[1]; lffw "  
} u\;d^A  
b]  
public void remove() { sI.p( -K Q  
SortUtil.swap(queue,1,size--); 0O[le*3b  
fixDown(1); d$"?8r4:K  
} ,^RZ1tLz  
file://fixdown n?U^vK_  
private void fixDown(int k) { U(Tl$#Bt  
int j; n?;h-KKO:  
while ((j = k << 1) <= size) { 7>=  
if (j < size %26amp;%26amp; queue[j] j++; 0SQrz$y  
if (queue[k]>queue[j]) file://不用交换 pHXs+Ysw+  
break; P\WFm   
SortUtil.swap(queue,j,k); <HtGp6q  
k = j; yf7|/M  
} Mh{244|o[  
} _PcF/Gyk  
private void fixUp(int k) { HX)]@qL  
while (k > 1) { IXG@$O?y/  
int j = k >> 1; N0%q 66]1  
if (queue[j]>queue[k]) 4/%Y@Z5  
break; nRvaCAt^  
SortUtil.swap(queue,j,k);  yj=OR|v  
k = j; \d*ts(/a*  
} \~g,;>%7Y  
} 'iTY?  
c8Q}m(bhWI  
} A{e>7Z72  
w3z'ZCcr;"  
} ':3[?d1Es  
G<* Iw>ep  
SortUtil: `5e{ec c7  
3-&~jm~"  
package org.rut.util.algorithm; p8 Ao{  
g)R2V  
import org.rut.util.algorithm.support.BubbleSort; TW|- 0  
import org.rut.util.algorithm.support.HeapSort; vZW[y5   
import org.rut.util.algorithm.support.ImprovedMergeSort; BeN]D  
import org.rut.util.algorithm.support.ImprovedQuickSort; I\x9xJ4x  
import org.rut.util.algorithm.support.InsertSort; 684d&\(s  
import org.rut.util.algorithm.support.MergeSort; >JAWcT)d  
import org.rut.util.algorithm.support.QuickSort; vw4b@v-XQ3  
import org.rut.util.algorithm.support.SelectionSort; 8N+T=c  
import org.rut.util.algorithm.support.ShellSort; >cLh$;l  
no W]E}nN  
/** |}.}q  
* @author treeroot zvVo-{6  
* @since 2006-2-2 t0GJ$])  
* @version 1.0 6ypLE@Mk  
*/ .rITzwgB  
public class SortUtil { 1= 7ASS9  
public final static int INSERT = 1; UhrRB  
public final static int BUBBLE = 2; m"'} {3$%  
public final static int SELECTION = 3; \A,zwdt P  
public final static int SHELL = 4; 8\^A;5  
public final static int QUICK = 5; 9K#3JyW*  
public final static int IMPROVED_QUICK = 6; oR,6esA+6n  
public final static int MERGE = 7; ' ,S}X\  
public final static int IMPROVED_MERGE = 8; ]<C]`W2{  
public final static int HEAP = 9; c#>(8#'.U  
vS)>g4  
public static void sort(int[] data) { 1;H"4u_IG&  
sort(data, IMPROVED_QUICK); 46pR!k  
} 7~F~'V  
private static String[] name={ xQ7U$QF|]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0#DEh|?  
}; nJGs,~"  
X9NP,6  
private static Sort[] impl=new Sort[]{ e0h[(3bXs$  
new InsertSort(), +'-.c"  
new BubbleSort(), @"MQ6u G>  
new SelectionSort(), [8^q3o7n  
new ShellSort(), hl7 z1h  
new QuickSort(), $XTtDUP@  
new ImprovedQuickSort(), jz! [#-G  
new MergeSort(), WubV?NX;EF  
new ImprovedMergeSort(), yW (|auq  
new HeapSort() S<-nlBs.  
}; 3F@P$4!#l  
Eh ";irE  
public static String toString(int algorithm){ '5 ~cd  
return name[algorithm-1]; \Dy|}LE  
} D[#V  
:)D7_[i  
public static void sort(int[] data, int algorithm) { DJ@n$G`^^  
impl[algorithm-1].sort(data); q[C?1Kc .z  
}  5QLK  
as!a!1  
public static interface Sort { ($kw*H{Ah^  
public void sort(int[] data); \0d'y#Gp*  
} ,aLwOmO  
q :TNf\/o  
public static void swap(int[] data, int i, int j) { pm,xGo2  
int temp = data; 8\!E )M|4  
data = data[j]; BjsT 9?6W/  
data[j] = temp; qSB&Q0T  
} J (?qk  
} XWnP(C9?  
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