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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。 $CT 2E  
插入排序: ){~]-VK  
' 3h"Ol{b  
package org.rut.util.algorithm.support; FVi7gg.?  
?<mxv"  
import org.rut.util.algorithm.SortUtil; zTP|H5HyK  
/**  D`Tx,^E  
* @author treeroot gK8E|f-z  
* @since 2006-2-2 IYZ$a/{P  
* @version 1.0 ) ?L  
*/ Gp&o  
public class InsertSort implements SortUtil.Sort{ |2ttdc.  
rV *`0hA1  
/* (non-Javadoc) ()Cw;N{E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )HaW# ,XB  
*/ S.i CkX  
public void sort(int[] data) { \%=GM J^[p  
int temp; VMa \?`fT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1/hk3m(C  
} eyUhM jd  
} 71)DLGL  
} g`NJ `  
-Y?C1DbKz  
} "$@Wy,yp  
/*$B  
冒泡排序: gk-g!v&  
dq.'[  
package org.rut.util.algorithm.support; ]ULE>a  
sTmY'5ry  
import org.rut.util.algorithm.SortUtil; Y1=.46Ezf  
:4HZ >!i  
/** z8 n=\xL  
* @author treeroot X3# AYn,  
* @since 2006-2-2 |_ChK6Q?v  
* @version 1.0 ?H30  
*/ q>n0'`q   
public class BubbleSort implements SortUtil.Sort{ czp .q  
AbXaxt/[g?  
/* (non-Javadoc) rzk]{W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lt<KRs  
*/ mW+QJ`3  
public void sort(int[] data) { Iz^lED  
int temp; 8i?Hh?Mf}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q.GA\o  
if(data[j] SortUtil.swap(data,j,j-1); +6i~Rx>  
} )^D:VY9 2  
} 'K8emt$d+  
} _7k6hVQ  
} VK~ OL  
z}gfH|  
} p3f>;|uh_  
DqQ+8 w  
选择排序: c^%vyBMY  
Gs0x;91  
package org.rut.util.algorithm.support; Z2.S:y.  
v[}g+3a  
import org.rut.util.algorithm.SortUtil; ~8htg8CZ`  
/-mo8]J#2~  
/** h^`!kp  
* @author treeroot Mu~DB:Y9e  
* @since 2006-2-2 N8-!}\,  
* @version 1.0 Cnv M>]  
*/ ?)2&LVrf  
public class SelectionSort implements SortUtil.Sort { +OTNn@!9  
z4UJo!{S  
/* ivi,/~L  
* (non-Javadoc) o`EL)K{  
* "j]85  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;`(l)X+7  
*/ 2rG;j52))a  
public void sort(int[] data) { *It`<F|  
int temp; g6wL\g{29  
for (int i = 0; i < data.length; i++) { 13lJq:bM  
int lowIndex = i; c-ud $0)c  
for (int j = data.length - 1; j > i; j--) { <,Z6=M`  
if (data[j] < data[lowIndex]) { cc %m0p  
lowIndex = j;  ?[`*z?}  
} MD 62ObK!  
} u6pfc'GGg  
SortUtil.swap(data,i,lowIndex); 42If/N?  
} %~$P.Zh  
} 7: cmBkXm  
>0kZ-M5  
} }CoR$K   
lJR  
Shell排序:  6[{|'  
Go8?8*  
package org.rut.util.algorithm.support; :hA=(iz  
<NVSF6`  
import org.rut.util.algorithm.SortUtil; wE4:$+R};  
a'U}.w}  
/** eOdB<He36  
* @author treeroot |d@%Vb_  
* @since 2006-2-2 wk'12r6=(-  
* @version 1.0 5Lo\[K >j  
*/ Z fQzA}QD  
public class ShellSort implements SortUtil.Sort{ f=f8) +5  
6H)T=Z|  
/* (non-Javadoc) X5V8w4NN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x  bsk  
*/ 63EwV p/|  
public void sort(int[] data) { )nI}KQJ<  
for(int i=data.length/2;i>2;i/=2){ ROv(O;.Ty  
for(int j=0;j insertSort(data,j,i); "; PW#VHC  
} v*pN~}5  
} lO=Nw+'$S  
insertSort(data,0,1); V2&O]bR  
} t04_~e  
bu j}pEI  
/** :L E&p[^  
* @param data zP F0M(  
* @param j [lmghI!  
* @param i f <,E  
*/ D (>,#F  
private void insertSort(int[] data, int start, int inc) { 6hW ~Q  
int temp; )$.::[pNA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ep.Q&(D >  
} Exy|^Dr0  
} ,/XeG`vk  
} 19r4J(pV  
b#17N2xkT  
} S1!X;PP/  
~o+:M0)}  
快速排序: tz).]E D  
3\!DsPgW  
package org.rut.util.algorithm.support; 9ozK}Cg4  
uaX#nn?ws  
import org.rut.util.algorithm.SortUtil; P Tc@MH)  
b%TS37`^[  
/**  wh A  
* @author treeroot f4h|Nn%;  
* @since 2006-2-2 Tx+Bkfj  
* @version 1.0 -$; h+9BO  
*/ vq.~8c1  
public class QuickSort implements SortUtil.Sort{ P_[A  
gc y'"d"  
/* (non-Javadoc) \h#,qTE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (D?%(f  
*/ X:un4B}O  
public void sort(int[] data) { aT]G&bR?  
quickSort(data,0,data.length-1); n0nvp@?7bJ  
} 5*q!:$ W  
private void quickSort(int[] data,int i,int j){ P?zPb'UVqa  
int pivotIndex=(i+j)/2; V[w Y;wj  
file://swap /^F_~.u{  
SortUtil.swap(data,pivotIndex,j); |SO?UIWp  
#]~l]Eq  
int k=partition(data,i-1,j,data[j]); {hXIP`  
SortUtil.swap(data,k,j); &sbKN[xM  
if((k-i)>1) quickSort(data,i,k-1); M<AjtDF%  
if((j-k)>1) quickSort(data,k+1,j); =&5^[:ksB  
.[@TC@W  
} <;O -N=  
/** #dvH0LX?  
* @param data QM"\;l??  
* @param i \hm;p  
* @param j zK Y 9 'y  
* @return JTw< 4]  
*/ sQ)D.9\~  
private int partition(int[] data, int l, int r,int pivot) { (9"w{pnlLc  
do{ o~aK[   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4(h19-V  
SortUtil.swap(data,l,r); ^PNE6  
} >q}Ns^ .'  
while(l SortUtil.swap(data,l,r); #><P28m  
return l; p)dD{+"/2  
} Gr&)5hm$  
k\ 2.\Lwb  
} $$,/F  
3:S>MFRn.3  
改进后的快速排序: mMz^I7$  
4 8}\  
package org.rut.util.algorithm.support; by:"aDGK.  
1TOT}h5  
import org.rut.util.algorithm.SortUtil; Pl>BTo>p'  
+1te8P*  
/** aJ4y%Gy?  
* @author treeroot V5.=08L  
* @since 2006-2-2  MeP,8,n'  
* @version 1.0 ]]EOCGZ"  
*/ T3JM8  
public class ImprovedQuickSort implements SortUtil.Sort { C:?mOM#_  
AjW5H*  
private static int MAX_STACK_SIZE=4096; }[$qn|  
private static int THRESHOLD=10; ; qQ* p  
/* (non-Javadoc) kn^? .^dVX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bXx2]E227  
*/ ,4OH9 -Q1  
public void sort(int[] data) { %6%QE'D  
int[] stack=new int[MAX_STACK_SIZE]; M9t`w-@_w  
k|r+/gIV  
int top=-1; J%:D%=9 )  
int pivot; )Rlh[Y& r  
int pivotIndex,l,r; BDO]-y  
.8v[ss6:  
stack[++top]=0; R)>F*GsR  
stack[++top]=data.length-1; 5LkpfmR  
.!B>pp(9  
while(top>0){ FxkxV GZ"  
int j=stack[top--]; ; xz}]@]Ar  
int i=stack[top--]; )~Pj 3  
gdx2&~  
pivotIndex=(i+j)/2; ;7HL/-  
pivot=data[pivotIndex]; }OJ,<!v2pc  
bMrR  
SortUtil.swap(data,pivotIndex,j); ]bui"-tlK  
1p|h\H  
file://partition #C`IfP./  
l=i-1; 8M_p'AR\,y  
r=j; ]E:P-xTwaI  
do{ ,lUroO^^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g?mfpwZj  
SortUtil.swap(data,l,r); w]& o]VP  
} Mqk[+n  
while(l SortUtil.swap(data,l,r); F4#^jat{  
SortUtil.swap(data,l,j); $lC*q  
/&eF,4  
if((l-i)>THRESHOLD){ mjI $z3  
stack[++top]=i; 7R{(\s\9:  
stack[++top]=l-1; "lT>V)NB'  
} >}p'E9J?r  
if((j-l)>THRESHOLD){ .Jvy0B} B  
stack[++top]=l+1; gWK NC  
stack[++top]=j; Vlka+$4!  
} %z_L}L  
@5)THYAx4  
} 03$lgDQ  
file://new InsertSort().sort(data); w%NT 0J  
insertSort(data); ~t,-y*=  
} ,xzSFs>2  
/** EYaX@|)  
* @param data (U GmbRf&  
*/ )2YZ [~3  
private void insertSort(int[] data) { m`Dn R`+  
int temp; fN-y8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }vof| (Yh  
} 8va&*J? 2  
} F,NS:mE  
} pRTdP/(OQ  
l0sBXs`3b  
} Zi4Ektj2  
Kd%>:E*  
归并排序: c8=@ s#  
t%'0uB#v1  
package org.rut.util.algorithm.support; $mF(6<w  
AY~~a)V  
import org.rut.util.algorithm.SortUtil; 28jm*Cl8  
Cjn)`Q8  
/** V!3.MQM  
* @author treeroot Z,ZebS@yG  
* @since 2006-2-2 i(pevu  
* @version 1.0 ~p'DPg4  
*/ s(3iGuT  
public class MergeSort implements SortUtil.Sort{ UZ qQ|3  
puPYM"  
/* (non-Javadoc) P:3%#d~q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]B'H(o R<|  
*/ 1r-#QuV#  
public void sort(int[] data) { G1`H H&  
int[] temp=new int[data.length]; _;x7vRWmN  
mergeSort(data,temp,0,data.length-1); 5( }Qg9%  
} SyWLPh  
% w0Vf$  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5uJ{#Zd  
int mid=(l+r)/2; G'\x9%  
if(l==r) return ; oO 8opS7F  
mergeSort(data,temp,l,mid); |x ~<Dc>0*  
mergeSort(data,temp,mid+1,r); z/IZ ;K_e  
for(int i=l;i<=r;i++){ k"V@9q;*  
temp=data; 3"pl="[*  
} (XDK&]U  
int i1=l; >FRJvZ6  
int i2=mid+1; ?7:?OX  
for(int cur=l;cur<=r;cur++){ ly)b=ph&  
if(i1==mid+1) +#/`4EnI  
data[cur]=temp[i2++]; ,svj(HP$  
else if(i2>r) nG dEJ  
data[cur]=temp[i1++]; 01-n_ $b  
else if(temp[i1] data[cur]=temp[i1++]; \XUG-\$p  
else ]F]!>dKA  
data[cur]=temp[i2++]; n~wNee  
} t;~H6  
} " ~X;u8m  
&d8z`amP  
} ; {P"~(S%  
dLtn,qCX0^  
改进后的归并排序: 9u->.O: p  
^z^ UFW  
package org.rut.util.algorithm.support; B9-Nb 4  
u,rieKYF  
import org.rut.util.algorithm.SortUtil; NSPa3NE  
I9 R\)3"  
/** ` iiZ  
* @author treeroot #Ang8O@y  
* @since 2006-2-2 MDo4{7  
* @version 1.0 >;;tX3(  
*/ SuHv{u45  
public class ImprovedMergeSort implements SortUtil.Sort { 6,C,LT2^(  
``:AF:  
private static final int THRESHOLD = 10; 2[*r9%W  
eqL~h1^Co  
/* 9_6.%qj&  
* (non-Javadoc) PUdJ>U  
* V`n;W6Q17  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zy -&g:  
*/ Jhyb{i8RR  
public void sort(int[] data) { 3gn) q>Xj$  
int[] temp=new int[data.length]; A!K/92[#@  
mergeSort(data,temp,0,data.length-1); W:8*Z8?7  
} BE;J/  
.o2]ndT/J  
private void mergeSort(int[] data, int[] temp, int l, int r) { sp0j2<$a  
int i, j, k; CXQPbt[5  
int mid = (l + r) / 2; D{](5?$`|  
if (l == r) $hkMJ),T~  
return; "\'g2|A  
if ((mid - l) >= THRESHOLD) }^Unx W  
mergeSort(data, temp, l, mid); 9Q#eu~R  
else ohdWEU,  
insertSort(data, l, mid - l + 1); fC2   
if ((r - mid) > THRESHOLD) [U]ouh)  
mergeSort(data, temp, mid + 1, r); &?@gUk74"  
else }+L!r53g6  
insertSort(data, mid + 1, r - mid); GnE%C2L -  
%G<!&E!0h  
for (i = l; i <= mid; i++) { P}%0YJ$6  
temp = data; cm8-L[>E  
} ::y+|V/  
for (j = 1; j <= r - mid; j++) { s_=/p5\  
temp[r - j + 1] = data[j + mid]; 1`tE Hu.  
} >+[uV ^2[  
int a = temp[l]; >b |TaQ  
int b = temp[r]; R;P>_ei(LK  
for (i = l, j = r, k = l; k <= r; k++) { -$(,&qyk  
if (a < b) { K)Nbl^6x  
data[k] = temp[i++]; O?8^I<  
a = temp; P&/PCSf  
} else { h^P>,dy0  
data[k] = temp[j--]; c3gy{:lb  
b = temp[j];  W t&tu2  
} .(Gq9m[~8H  
} SWjOJjn  
} X517PT8O  
,w|f*L$  
/** k;p:P ?s5Y  
* @param data 5|ih>?C/(  
* @param l ex8mA6g  
* @param i .`!|^h%0  
*/ D-.XSIEMu  
private void insertSort(int[] data, int start, int len) { `zHtfox!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,CguY/y  
} W'\{8&:!  
} t;9f7~  
} ,TD@s$2x  
} ]Au78Yom  
byM/LE7)  
堆排序: ?lzg )88I  
vJ$#m_aa  
package org.rut.util.algorithm.support; cpB$bC](  
:N#gNtC)b  
import org.rut.util.algorithm.SortUtil; !!ZNemXct$  
8#S|j BV  
/** v709#/ cR  
* @author treeroot 0-EhDGa]r  
* @since 2006-2-2 3ug{1 M3  
* @version 1.0 MpM-xz~  
*/ @R>4b  
public class HeapSort implements SortUtil.Sort{ GmN} +(  
u>H^bCXI  
/* (non-Javadoc) \LRno3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L<Q1acoZm  
*/ #rzq9}9tB  
public void sort(int[] data) { p^+k:E>U  
MaxHeap h=new MaxHeap(); ecA[  
h.init(data); 8ON$M=Ze$  
for(int i=0;i h.remove(); ]j0v.[SX  
System.arraycopy(h.queue,1,data,0,data.length); .l5y !?  
} nH*U  
RX:\@c&  
private static class MaxHeap{ $lci{D32,  
["GC   
void init(int[] data){ =35^k-VS  
this.queue=new int[data.length+1]; wQ[~7 ,o  
for(int i=0;i queue[++size]=data; ~f 2H@#  
fixUp(size); c]F$$BT  
} :{%6< j  
} {AqN@i  
=ji p* E^  
private int size=0; +Tde#T&[  
"$PbpY  
private int[] queue; #B|`F?o  
~!j1</$_  
public int get() { |4pE"6A  
return queue[1]; |vA3+kG  
} k}l5v)m  
}Gr5TDiV0\  
public void remove() { ~R7rIP8Wr  
SortUtil.swap(queue,1,size--); / O6n[qj|  
fixDown(1); \dCoY0Z ;  
} ,ju1:`  
file://fixdown pq+Gsu1^  
private void fixDown(int k) { 3D +>NB  
int j; q .nsGbl  
while ((j = k << 1) <= size) { ;^lVIS%&{  
if (j < size %26amp;%26amp; queue[j] j++; ^o,Hu#  
if (queue[k]>queue[j]) file://不用交换 {;);E  
break; ~d?7\:n  
SortUtil.swap(queue,j,k); @~'c(+<3  
k = j; %JBp~"  
} Y(78qs1w  
} ~HI|t2C  
private void fixUp(int k) { %#2[3N{  
while (k > 1) { tx Lo =  
int j = k >> 1; 7EOn4I2@[  
if (queue[j]>queue[k]) #*j  
break; 1C^6'9o  
SortUtil.swap(queue,j,k); Qr1%"^4  
k = j; 52/^>=t  
} z<ptrH  
} .<^dv?@  
[G+M94[A  
} lLxKC7b  
}7+G'=XI/  
} 0XSZ3dY&+  
&9, 6<bToP  
SortUtil: -OZXl  
&Ph@uZ\  
package org.rut.util.algorithm; fBS;~;l  
#JYv1F  
import org.rut.util.algorithm.support.BubbleSort; Ti#2D3  
import org.rut.util.algorithm.support.HeapSort; X_Is#&6;  
import org.rut.util.algorithm.support.ImprovedMergeSort; `Q<hL{AH  
import org.rut.util.algorithm.support.ImprovedQuickSort; @sav8 ]  
import org.rut.util.algorithm.support.InsertSort; hZVF72D26  
import org.rut.util.algorithm.support.MergeSort; aN}yS=(Ff  
import org.rut.util.algorithm.support.QuickSort; .d^8w97  
import org.rut.util.algorithm.support.SelectionSort; |0ACapp!  
import org.rut.util.algorithm.support.ShellSort; J1YP-:  
hvQOwA;e  
/** iyc}a6g  
* @author treeroot Z<;<!+,  
* @since 2006-2-2 lV]hjt-L 2  
* @version 1.0 D0v!fF ~  
*/ :-xp'_\L  
public class SortUtil { L:IaJ?+?  
public final static int INSERT = 1; m!er "0  
public final static int BUBBLE = 2; vK!,vKa.  
public final static int SELECTION = 3; R4 ;^R  
public final static int SHELL = 4; }N#jA yp!  
public final static int QUICK = 5; 25XD fi75  
public final static int IMPROVED_QUICK = 6; ,6~c0]/  
public final static int MERGE = 7; QK&<im-  
public final static int IMPROVED_MERGE = 8; ;}#tm9S;  
public final static int HEAP = 9; D@rOX(m  
3cBuqQ  
public static void sort(int[] data) { ,oT?-PC$z  
sort(data, IMPROVED_QUICK); |F-_YR  
} BLgmF E2  
private static String[] name={ CtTG`)"|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'M=(5p  
}; @C0{m7q  
usZmf=p-r  
private static Sort[] impl=new Sort[]{ {oy(08 `6  
new InsertSort(), 8b8ui  
new BubbleSort(), bqJL@!T  
new SelectionSort(), $u|p(E:*  
new ShellSort(), ,+3l9FuQ  
new QuickSort(), F[ N{7C3  
new ImprovedQuickSort(), J Xo_l  
new MergeSort(), O(!J^J3_z  
new ImprovedMergeSort(), Q!7Er  
new HeapSort() ,}2M'DSWa  
}; Wo&MHMP  
;eI,1 [_  
public static String toString(int algorithm){ bLUn>ch  
return name[algorithm-1]; y&-wb'==p  
} k|F<?:C  
H[U$4 %t  
public static void sort(int[] data, int algorithm) { .n[!3X|d  
impl[algorithm-1].sort(data); \9geDX9A  
} NC)Iu  
:/c=."z.  
public static interface Sort { v*7}ux8  
public void sort(int[] data); Tm-Nz7U^^  
}  ]hpocr  
sn '#]yM  
public static void swap(int[] data, int i, int j) { GM%%7^uE  
int temp = data; u3(zixb  
data = data[j]; (s4w0z  
data[j] = temp; 4`)`%R$  
} *>h"}e41  
} $`(}ygmP  
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