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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。 ^h\Y.  
插入排序: yUp"%_t0  
>'96SE3  
package org.rut.util.algorithm.support; X*Cvh|  
R`!'c(V  
import org.rut.util.algorithm.SortUtil; ^Y- S"Ks  
/** `u7"s'  
* @author treeroot iP^o]4[c  
* @since 2006-2-2 "Zq)y_1  
* @version 1.0 K"U[OZC`  
*/ @Zov&01  
public class InsertSort implements SortUtil.Sort{ -iJ @K  
;Alw`'  
/* (non-Javadoc) EwH_k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <\C/;  
*/ } qn@8}  
public void sort(int[] data) { w*7BiZ{s<  
int temp; 0) T`&u3!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ed=]RR 4R  
} 25CO_  
} F9 q9BH  
} F1UTj "<e  
RbGq$vYol/  
} &['cZ/bM  
-cW 'g  
冒泡排序: dpWBY3(7a  
l/F'W}  
package org.rut.util.algorithm.support; q]>m#yk   
 (:ObxJ*  
import org.rut.util.algorithm.SortUtil; @#= ail  
UOAL7  
/** pz]#/Ry?  
* @author treeroot BmGY#D,  
* @since 2006-2-2 P]b * hC  
* @version 1.0 8*t8F\U#  
*/ FqpUw<]6s  
public class BubbleSort implements SortUtil.Sort{ #Kd^t =k  
fKN&0N |^R  
/* (non-Javadoc) :^oF0,-qZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "o.g}Pv  
*/ p{BBqKv  
public void sort(int[] data) { R#0Z  
int temp; b9gezXAcd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g(D r/D  
if(data[j] SortUtil.swap(data,j,j-1); DEcsFC/SK  
} vsL)E:0  
} :`w'}h7m  
} lyYi2& %  
} eH9Ofhsry  
/<WK2G  
} b ?-VZA:  
i1E~F  
选择排序: f R?Xq@c  
x."/+/  
package org.rut.util.algorithm.support; bO2s'!x  
ohPCYt  
import org.rut.util.algorithm.SortUtil; q V +gQ  
D3BT>zTGK  
/** ?6=u[))M&  
* @author treeroot rbw5.NU  
* @since 2006-2-2 v Ol<  
* @version 1.0 ~p0M|  
*/ ]&mN~$+C  
public class SelectionSort implements SortUtil.Sort { 6*]g~)7`Q~  
Sl RQi:  
/* cB ,l=/?  
* (non-Javadoc) ;@R=CQ6  
* 2GRdfX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] s))O6^f  
*/ l,n V*Z  
public void sort(int[] data) { bXw!fYm&  
int temp; fi.[a8w:W  
for (int i = 0; i < data.length; i++) { QSxR@hC  
int lowIndex = i; /\0 rRT  
for (int j = data.length - 1; j > i; j--) { WK<:(vu.  
if (data[j] < data[lowIndex]) { 6pCQP c*A  
lowIndex = j; }KZt7)  
} |)vC^=N{+  
} 2sryhS'(H  
SortUtil.swap(data,i,lowIndex); ~dFdO7  
} d@?++z  
} v.Y?<=E+<d  
 ~;#OQ[  
} !lk -MN.  
:4V8Iz 71  
Shell排序: ".Q``d&X  
nGqD{!i<  
package org.rut.util.algorithm.support; O ^+H:Y|  
yD-L:)@"  
import org.rut.util.algorithm.SortUtil; 7ZsBYP8%  
k,mgiGrQ  
/** c\\'x\J7  
* @author treeroot sOY+ X  
* @since 2006-2-2 f0lpwwe  
* @version 1.0 | pA  
*/ g$N/pg2>cT  
public class ShellSort implements SortUtil.Sort{ K_" denzT+  
TOe=6 Z5h  
/* (non-Javadoc) /#C}1emK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sBLf(Q,  
*/ ZHWxU  
public void sort(int[] data) { PqJB&:ZV  
for(int i=data.length/2;i>2;i/=2){ yDil  
for(int j=0;j insertSort(data,j,i); \[57Dmo  
} ,R~{$QUl  
} k)t_U3i  
insertSort(data,0,1); 3m#/1=@o  
} ^z%ShmM&LZ  
XJ3p<  
/** Ww[Xqmg  
* @param data P,}cH;w6Ck  
* @param j A./ VO  
* @param i `v|w&ty*  
*/ 1ab_^P  
private void insertSort(int[] data, int start, int inc) { 0S%xm'|N  
int temp; l 7XeZ} S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $:i%\7=  
} wIbxnn  
} w I7iE4\vz  
} 1_of;=9V  
KS3>c7  
} \Xr Sn_p-  
D\ ;(BB  
快速排序: 5(+PI KCjC  
K|{IX^3)V  
package org.rut.util.algorithm.support; ? +q(,P@*  
BIk0n;Kz<L  
import org.rut.util.algorithm.SortUtil; xRI7_8Jpyn  
8?za&v  
/** C;UqLMrOI  
* @author treeroot WP5QA8`3  
* @since 2006-2-2 YcaomPo  
* @version 1.0 3hi0  
*/ j+9;Cp]NV  
public class QuickSort implements SortUtil.Sort{ 3!H&bOF  
J dK' ~-L  
/* (non-Javadoc) pXy'Ss@y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S#^2k!(|G  
*/ 5OR2\h!XZt  
public void sort(int[] data) { &&daQg4Ha  
quickSort(data,0,data.length-1); nhu;e}[>  
} c&mLK1A6  
private void quickSort(int[] data,int i,int j){ vR)f'+_Nz  
int pivotIndex=(i+j)/2; s<XAH7?0  
file://swap w!j'k|b>  
SortUtil.swap(data,pivotIndex,j); QH d^?H*  
GI[TD?s  
int k=partition(data,i-1,j,data[j]); O?=YY@j  
SortUtil.swap(data,k,j); D"z3SLFW{  
if((k-i)>1) quickSort(data,i,k-1); O)jpnNz  
if((j-k)>1) quickSort(data,k+1,j); A5\00O~  
X9-WU\?UC  
} nqFJNK]a  
/** xk:=.Qqh  
* @param data I""zg^Rq  
* @param i i!a. 6Gq  
* @param j )/y7Fh  
* @return 3 i;sB  
*/ y v58~w*"  
private int partition(int[] data, int l, int r,int pivot) { mM$|cge"  
do{ ^5D%)@~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ..K@'*u  
SortUtil.swap(data,l,r); -`8pahI  
} +v.<Fw2k#  
while(l SortUtil.swap(data,l,r); ]<xzCPB  
return l; B@ xjwBUk  
} RDSkFK( D  
{O=PVW2S  
} #aua6V!"  
@PZ{(  
改进后的快速排序: 3!u`PIQv  
wU5.t -|`  
package org.rut.util.algorithm.support; V"Sa9P{y"  
m4r<=o  
import org.rut.util.algorithm.SortUtil; cSD$I^$oq  
euyd(y$'k  
/** # E{2 !Z  
* @author treeroot yp!7^  
* @since 2006-2-2 A/c#2  
* @version 1.0 )Ggv_mc h  
*/ RD|DHio%  
public class ImprovedQuickSort implements SortUtil.Sort { {44#<A<  
`9* |Y8:  
private static int MAX_STACK_SIZE=4096; gWu<5Y=C  
private static int THRESHOLD=10; DP8%/CV!*  
/* (non-Javadoc) lS96Z3k"SB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ogvB{R  
*/ WqJrDj~  
public void sort(int[] data) { jl"su:y  
int[] stack=new int[MAX_STACK_SIZE]; 9R m\@E [  
I !J'  
int top=-1; 8-PHW,1@a3  
int pivot; ,gdud[&|;  
int pivotIndex,l,r; rQD^O4j R  
w$DHMpW'  
stack[++top]=0; t }YT+S  
stack[++top]=data.length-1; &e6!/y&  
^?8/9 o  
while(top>0){ vk4Q2P  
int j=stack[top--]; /U 3Uuk:  
int i=stack[top--]; q"e]\Tb=we  
$3 =S\jyfK  
pivotIndex=(i+j)/2; ZYS]Et[Q  
pivot=data[pivotIndex]; c[>xM3=e^q  
H:F'5Zt  
SortUtil.swap(data,pivotIndex,j); %6W%-`  
{[)n<.n[g  
file://partition vB%os Qm  
l=i-1; +,1 Ea )  
r=j; 1N}vz(0"  
do{ eBWgAf.k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4q"4N2  
SortUtil.swap(data,l,r); <Ej`zGhWz  
} 4D}hYk$eP0  
while(l SortUtil.swap(data,l,r); = inp>L  
SortUtil.swap(data,l,j); o/6VOX  
ri%j*Kn  
if((l-i)>THRESHOLD){ #,9s\T  
stack[++top]=i; \c}pzBFd  
stack[++top]=l-1; ifcp!l+8  
} \iP5.3C  
if((j-l)>THRESHOLD){ _CMNmmp`e  
stack[++top]=l+1; ph$ vP;}  
stack[++top]=j; bO` S Bq$  
} @h9QfJ_f  
 i}_"  
} L|L;<  
file://new InsertSort().sort(data); [DZ|Ltv  
insertSort(data); @'9m()%-]g  
} YsMM$rjP +  
/** ?C`r3  
* @param data *XOLuPL>6)  
*/ X;1yQ |su  
private void insertSort(int[] data) { 8'"=y}]H~  
int temp; tZG l^mA"g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EsS$th)d  
} P1R5}i  
} 2){O&8A  
} ob;O,&e0>  
\U3v5|Q  
} ?<` ;lu/eL  
jU-aa+  
归并排序: ^=k=;   
8iTB  
package org.rut.util.algorithm.support; xnf J ruT  
uBl&{$<  
import org.rut.util.algorithm.SortUtil; 9a]{|M9  
\zc R7 5  
/** as(/ >p  
* @author treeroot >=4('  
* @since 2006-2-2 J5(^VKj  
* @version 1.0 {- &`@V  
*/ S=gb y  
public class MergeSort implements SortUtil.Sort{ O0FUJGuTS  
I~;w Q  
/* (non-Javadoc) { V) `6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2M*i'K;;)P  
*/ 58d[>0Xa[g  
public void sort(int[] data) { ve+bR   
int[] temp=new int[data.length]; zW\s{  
mergeSort(data,temp,0,data.length-1); fTso[r:F.  
} 7 =D,D+f  
,5x#o  
private void mergeSort(int[] data,int[] temp,int l,int r){ T%;V_iW-  
int mid=(l+r)/2; `{|w*)mD  
if(l==r) return ; ah%Ws#&  
mergeSort(data,temp,l,mid); }i{qRx"4  
mergeSort(data,temp,mid+1,r); O}w%$ mq  
for(int i=l;i<=r;i++){ I tb_ H  
temp=data; zE<Iv\Q  
} dr(-k3ex  
int i1=l; 14"+ctq  
int i2=mid+1; 7{]dh+)  
for(int cur=l;cur<=r;cur++){ d@ >i=l [  
if(i1==mid+1) 1Au+X3   
data[cur]=temp[i2++]; Xo:Mar  
else if(i2>r) 2e-`V5{)b  
data[cur]=temp[i1++]; x0b=r!Duu  
else if(temp[i1] data[cur]=temp[i1++]; zO---}[9a  
else h5rR44  
data[cur]=temp[i2++]; damG*-7Svx  
} Jt[,V*:#  
} LRg]'?  
v3aPHf  
}  DR{O.TX  
@({=~ W^  
改进后的归并排序: 7nPcm;Er  
FZ?:BX^  
package org.rut.util.algorithm.support; 5.*,IedY  
? 3OfiGX?  
import org.rut.util.algorithm.SortUtil; Xi1|%  
>[Wjzg  
/** 0k{\W  
* @author treeroot =@0J:"c  
* @since 2006-2-2 YVwpqOE.=  
* @version 1.0 ]'"Sa<->  
*/ 641P)  
public class ImprovedMergeSort implements SortUtil.Sort { bU}v@Uk  
l -xc*lC  
private static final int THRESHOLD = 10; x1?mE)n]  
_U}vKm  
/* .1q}mw   
* (non-Javadoc) hHhDs>tB  
* ,:e~aG,B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J8!2Tt  
*/ Q#G xo  
public void sort(int[] data) { i6KB\W2  
int[] temp=new int[data.length]; Q3(ulgl]  
mergeSort(data,temp,0,data.length-1); J_ h.7V  
} I8YUq   
I`_I^C3  
private void mergeSort(int[] data, int[] temp, int l, int r) { lKw-C[  
int i, j, k; [8a(4]4  
int mid = (l + r) / 2; e.skE>&  
if (l == r) |$b8(g$s)  
return; y]0O"X-G  
if ((mid - l) >= THRESHOLD) x};~8lGT>t  
mergeSort(data, temp, l, mid); >x JzV  
else ~f(5l.  
insertSort(data, l, mid - l + 1); ]c~yMA+]FZ  
if ((r - mid) > THRESHOLD) Uffwzd!  
mergeSort(data, temp, mid + 1, r); *d3-[HwZCL  
else NJQ)Ttt  
insertSort(data, mid + 1, r - mid); Sz@z 0'  
T{k_3[{0o  
for (i = l; i <= mid; i++) { Gk{ 'U  
temp = data; VaY#_80$s  
} k9f|R*LM  
for (j = 1; j <= r - mid; j++) { L?j0t*do  
temp[r - j + 1] = data[j + mid]; zQ |2D*W  
} [9${4=Kq  
int a = temp[l]; *{vH9TO  
int b = temp[r]; XZ~kXE;B(  
for (i = l, j = r, k = l; k <= r; k++) { 3fhY+$tq  
if (a < b) { Q $}#&  
data[k] = temp[i++]; \0x>#ygX  
a = temp; } Xo#/9  
} else { ["<Xh0_  
data[k] = temp[j--]; {#qUZ z-  
b = temp[j]; dazNwn  
} LN WS  
} "t&=~eOe3  
} -0d9,,c  
<7VLUk}  
/** xeSch?}  
* @param data W|m(Jh[w]  
* @param l \Q|-Npw  
* @param i AQUAQZc  
*/ BV B2$&eJ  
private void insertSort(int[] data, int start, int len) { Q-'j131[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); J)>DsQ+Cj  
} SjB"#E)  
} \jwG*a  
} 1H-Y3G>jN  
} a]u.Uqyx2w  
q4[}b-fF  
堆排序: ZKXE7p i  
P!W%KobZ7|  
package org.rut.util.algorithm.support; 1`K-f m)  
Q;$k?G=l  
import org.rut.util.algorithm.SortUtil; xrPZy*Y,  
e'.BTt58Y  
/** -/pz3n  
* @author treeroot pPBXUu'  
* @since 2006-2-2 G0UaE1n  
* @version 1.0 {P8d^=#q  
*/ 4{YA['  
public class HeapSort implements SortUtil.Sort{ \R<MQ# x  
f?UI+TU  
/* (non-Javadoc) (<eLj Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N l@G\_  
*/ iAk:CJ{  
public void sort(int[] data) { 9jTBLp-i#N  
MaxHeap h=new MaxHeap(); ,2fi`9=\  
h.init(data); ]ZcivnN#  
for(int i=0;i h.remove(); x vs=T  
System.arraycopy(h.queue,1,data,0,data.length); .jCGtR )%  
} X[o+Y@bc  
!0,q[|m  
private static class MaxHeap{ 'Gn>~m  
T]De{nHu  
void init(int[] data){ SA +d4P_T  
this.queue=new int[data.length+1]; +c))fPuV  
for(int i=0;i queue[++size]=data; e"t0 rScA  
fixUp(size); $Q/@5f'T`9  
} /aI@2]|~  
} +>#SNZ[  
2T&MVl!%  
private int size=0; PY5&Fwjc  
uCDe>Q4@/  
private int[] queue; jsN[Drra  
T)\}V#iA*  
public int get() { ipwlP|UjQ5  
return queue[1]; z$?F^3>  
} ['IH*gi  
hik.qK  
public void remove() { ?XHQdN3e  
SortUtil.swap(queue,1,size--); e]RzvWq  
fixDown(1); a<<4gXx  
} ]@#9B>v=  
file://fixdown |fgUW.  
private void fixDown(int k) { \_`qon$9  
int j; \jiE :Qt  
while ((j = k << 1) <= size) { |SkQe[t  
if (j < size %26amp;%26amp; queue[j] j++; #%"G[B  
if (queue[k]>queue[j]) file://不用交换 Zk=,`sBC  
break; iwK.*07+  
SortUtil.swap(queue,j,k); }3{eVct#|  
k = j; m.K cTM%j  
} 9r?Z'~,Za  
} bTum|GWf  
private void fixUp(int k) { #dZs[R7h  
while (k > 1) { 1C<cwd;9  
int j = k >> 1; CeYhn\m5K0  
if (queue[j]>queue[k]) b(0<,r8  
break; G,)zn9X  
SortUtil.swap(queue,j,k); j}^w :W76  
k = j; o]<Z3)  
} ~!$"J}d}<  
} ,&_H  
X<%D@$  
} Oh! {E5!)  
[[$C tqLg  
} ;:6\w!fc  
\V>5)R n  
SortUtil: N{v)pu.  
=LaEEL  
package org.rut.util.algorithm; TF8#I28AD  
^p3 GT6  
import org.rut.util.algorithm.support.BubbleSort; "W7|Xp  
import org.rut.util.algorithm.support.HeapSort; ]>X_E%`G<b  
import org.rut.util.algorithm.support.ImprovedMergeSort; bXs=<`>  
import org.rut.util.algorithm.support.ImprovedQuickSort; $%~ JG(  
import org.rut.util.algorithm.support.InsertSort; }^&S^N 7  
import org.rut.util.algorithm.support.MergeSort; ~&<#H+O  
import org.rut.util.algorithm.support.QuickSort; 4CM'I~  
import org.rut.util.algorithm.support.SelectionSort; RCWmdR#}V  
import org.rut.util.algorithm.support.ShellSort; RNk|h  
1{a%V$S[  
/** 4qid+ [B  
* @author treeroot Wlc&QOfF  
* @since 2006-2-2 g+#awi7  
* @version 1.0 M6g8+sio  
*/ o !tC{"g  
public class SortUtil { K?uZIDo  
public final static int INSERT = 1; +x2JC' -H  
public final static int BUBBLE = 2; CYaN;HV@_  
public final static int SELECTION = 3; 7X>IS#W]  
public final static int SHELL = 4; q_b!+Y  
public final static int QUICK = 5; <A,V/']  
public final static int IMPROVED_QUICK = 6; m Q9dF,  
public final static int MERGE = 7; @su<h\)  
public final static int IMPROVED_MERGE = 8; &D<R;>iI  
public final static int HEAP = 9; ` g]  
G=:/v  
public static void sort(int[] data) { yNvAT>H  
sort(data, IMPROVED_QUICK); sT)>Vdwf_  
} Tc^ 0W=h  
private static String[] name={ }Fjbj5w0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1&MCS%UTL  
}; 83vMj$P  
`dvg5qQ  
private static Sort[] impl=new Sort[]{ 0i*V?  
new InsertSort(), ;C@mT;hR  
new BubbleSort(), YlrN^rO  
new SelectionSort(), K0gQr.J53  
new ShellSort(), ]X6<yzu&+l  
new QuickSort(), ;%e)t[5  
new ImprovedQuickSort(), 4LTm&+(5  
new MergeSort(), %,T*[d&i  
new ImprovedMergeSort(), ;iKLf~a a  
new HeapSort() p{w-  
}; x%EGxs;>^  
:r*hY$v  
public static String toString(int algorithm){ Fl`U{03  
return name[algorithm-1]; %YR&>j k  
} nj s:  
dxX`\{E  
public static void sort(int[] data, int algorithm) { ]h S:0QE  
impl[algorithm-1].sort(data); m4/qxm"Dx:  
} Vm%G q  
~F,~^r!Jtu  
public static interface Sort { aKj|gwo!  
public void sort(int[] data); u9"=t  
} 7P<VtS  
h&'|^;FM  
public static void swap(int[] data, int i, int j) { l'"nU6B&  
int temp = data; >Z!!`0{  
data = data[j]; P73GH  
data[j] = temp; qX@e+&4P0  
} 99=~vNn  
} %/A>'p,~  
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