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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。 0iYe>u  
插入排序: R\<^A~(Gl  
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package org.rut.util.algorithm.support; 3Ry?{m^  
lY~xoHT;[  
import org.rut.util.algorithm.SortUtil; ,Zdc  
/** t~Uqsa>n@'  
* @author treeroot +h =lAHn&  
* @since 2006-2-2 {DpZg",H-  
* @version 1.0 i_MDLS>-  
*/ p\(%bO   
public class InsertSort implements SortUtil.Sort{ QKVZ![Y!s  
M4QMD;Ez  
/* (non-Javadoc) C}Khh`8@5.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &t4j px  
*/ mJT7e  
public void sort(int[] data) { ua0k)4|  
int temp; Sh"} c2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M?_VYK  
} 03MB,  
} ZXco5,1  
} k -SUp8}g  
Dr;@)  
} fD!O aK  
 ~d }-  
冒泡排序: L<E`~\C'  
bNqjjg  
package org.rut.util.algorithm.support; Abj`0\  
t+vn.X+&  
import org.rut.util.algorithm.SortUtil; q* m%Fv  
W2n%D& PE  
/** "xh]>_;&'  
* @author treeroot W nVX)o  
* @since 2006-2-2 )]/!:I4e  
* @version 1.0 ~oOOCB  
*/ TfJB;  
public class BubbleSort implements SortUtil.Sort{ GE"#.J4z  
tnp]wZ  
/* (non-Javadoc) rtY0?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n&@\[,B  
*/ Gs-'  
public void sort(int[] data) { \ Xuu|]  
int temp; j88H3bi0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7)[4|I  
if(data[j] SortUtil.swap(data,j,j-1); iX4/;2B=,  
} I@[.W!w  
} -0>@jfP^D  
} hG3b7!^#g  
} *iYs,4  
; LTc4t  
} [u~#F,_ow  
6N]v9uXZ  
选择排序: @$Y`I{Xf  
pO"V9[p]  
package org.rut.util.algorithm.support; wKwireOs  
'*22j ]  
import org.rut.util.algorithm.SortUtil; C7PHZ`<  
Ua( !:5q?  
/** }4+S_b  
* @author treeroot 1MOQ/N2BR  
* @since 2006-2-2 rNZN}g  
* @version 1.0 J7S  
*/ +f|u5c  
public class SelectionSort implements SortUtil.Sort { +`\C_i-  
8on2 BC2  
/* ]F-{)j  
* (non-Javadoc) 7:;P>sF@  
* Pg5 1}{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m%m8002  
*/ lB,.TK  
public void sort(int[] data) { M@ mCBcbN  
int temp; KO:o GUR  
for (int i = 0; i < data.length; i++) { h4ZrD:D0\  
int lowIndex = i; BjJ+~R  
for (int j = data.length - 1; j > i; j--) { m\j'7mZ1  
if (data[j] < data[lowIndex]) { 7Sr7a {  
lowIndex = j; RzNv|   
} {V8 v  
} ~GMlnA]6  
SortUtil.swap(data,i,lowIndex); !K_%@|:7%  
} > `u} G1T\  
} MLaH("aen  
M,:GMO:?a  
} :tNH Cx  
GtbI w  
Shell排序: 6EJ,czt(  
Q;SMwCB0M  
package org.rut.util.algorithm.support; HJM-;C](  
]*Zg(YA  
import org.rut.util.algorithm.SortUtil; jF{zcYU  
Z&YW9de@  
/** jFnq{L t  
* @author treeroot 9V("K  
* @since 2006-2-2 A{Pp`*l  
* @version 1.0 $5|/X&"O)/  
*/ D24@lZ`g~  
public class ShellSort implements SortUtil.Sort{ YWjw`,EA(  
$Y 7q2  
/* (non-Javadoc) < JA5.6<=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bxak[>/  
*/ \,lgv  
public void sort(int[] data) { Fb VtyQz  
for(int i=data.length/2;i>2;i/=2){ {dhGSM7  
for(int j=0;j insertSort(data,j,i); r6QNs1f~.  
} #%Uk}5;-  
}  !3}vl Y1  
insertSort(data,0,1); O0c#-K.f  
} \Ua"gS2L  
C%0|o/Wi  
/** <e)3 j6F!  
* @param data &p`RKD  
* @param j O$LvHv!  
* @param i [@_}BZk  
*/ !ai, \  
private void insertSort(int[] data, int start, int inc) { ;)~loa1\  
int temp; m^%[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0k0 y'1SL  
} G)M9to  
} MW6d-  
} *h$Z:p-g  
aB+Ux< -  
} PJsiT4<  
},e f(  
快速排序: D~G24k6b3  
?,O{,2}  
package org.rut.util.algorithm.support; D*I%=);B_  
6m|j " m  
import org.rut.util.algorithm.SortUtil; Ft#d & I  
[0w @0?[  
/** `c ^2  
* @author treeroot }L3kpw  
* @since 2006-2-2 N{ @B@]  
* @version 1.0 D<]z.33  
*/ -P^ 6b(  
public class QuickSort implements SortUtil.Sort{ nPD5/xW  
rB~x]5TH  
/* (non-Javadoc) 6$lj$8\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8S"vRR  
*/ :"#EQq]ct  
public void sort(int[] data) { AbC /  
quickSort(data,0,data.length-1); @or&GcQ*  
} ;|5m;x/a  
private void quickSort(int[] data,int i,int j){ S9U,so?  
int pivotIndex=(i+j)/2; ]4ya$%A  
file://swap .'saUcVg:  
SortUtil.swap(data,pivotIndex,j); pZ}4'GnZI  
eR4%4gW)  
int k=partition(data,i-1,j,data[j]); }PTYNidlR  
SortUtil.swap(data,k,j); RHZ5f0b4L  
if((k-i)>1) quickSort(data,i,k-1); ML^c-xY(  
if((j-k)>1) quickSort(data,k+1,j); T XWi5f[  
a2 e-Q({  
} N=YRYU o  
/** s+8 v7ZJ  
* @param data 3i/$YX5@  
* @param i <b~KR8  
* @param j %qfql  
* @return mx y>  
*/ zB kS1qMn  
private int partition(int[] data, int l, int r,int pivot) { Q-k{Lqa-  
do{ mFC0f?nr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ggR@& \  
SortUtil.swap(data,l,r); : n 4?  
} bwR24>8lP  
while(l SortUtil.swap(data,l,r); hz\Fq1  
return l; V\^3I7F  
} yCy4t6`e  
,A T!:&<X  
} NguJ[  
`9}\kn-</8  
改进后的快速排序: /f@VRME  
wws)**]J8  
package org.rut.util.algorithm.support; l*T> 9yC  
;I1}g]  
import org.rut.util.algorithm.SortUtil; hqd}L~o:  
`j{q$Y=AG  
/** uO%G,b  
* @author treeroot K+5S7wFDZ  
* @since 2006-2-2 po~V{>fUm  
* @version 1.0 ;cgc\xm>  
*/ @0S3`[/U  
public class ImprovedQuickSort implements SortUtil.Sort { S\RjP*H*  
%8NAWDb{  
private static int MAX_STACK_SIZE=4096; #Cks&[!c  
private static int THRESHOLD=10; +P2f<~  
/* (non-Javadoc) X YO09#>&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &^KmfT5C  
*/ n>T1KC%  
public void sort(int[] data) { 484lB}H  
int[] stack=new int[MAX_STACK_SIZE]; mojD  
>DeG//rv  
int top=-1; P$?3\`U;  
int pivot; 20h|e+3  
int pivotIndex,l,r; (=c R;\s<  
+`O8cHx  
stack[++top]=0; :oh(M|;/2  
stack[++top]=data.length-1; u4*7 n-(  
l3dGe'  
while(top>0){ bU9B2'%E  
int j=stack[top--]; ;gfY_MXnF  
int i=stack[top--]; JDrh-6Zgj  
RLBjl%Q>  
pivotIndex=(i+j)/2; PYX]ld.E  
pivot=data[pivotIndex]; m22M[L(q  
28J ; 9  
SortUtil.swap(data,pivotIndex,j); 4)./d2/E  
x;ym_UZ6e  
file://partition \' (_r  
l=i-1; {Bk9]:'$5  
r=j; H-$)@  
do{ y1z<{'2x  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T|dQY~n~  
SortUtil.swap(data,l,r); +`4`OVE_#  
} 1sKKmtgH  
while(l SortUtil.swap(data,l,r); b<o Uy  
SortUtil.swap(data,l,j); ,&[2z!  
d:jD  
if((l-i)>THRESHOLD){ jkw:h0hX  
stack[++top]=i; 4X,fb`  
stack[++top]=l-1; ENW>bS8 e`  
} "X4L+]"$g  
if((j-l)>THRESHOLD){ ~RGZY/4  
stack[++top]=l+1; wmbjL=f Ia  
stack[++top]=j; yDh(4w-~gk  
} PI@/jh  
\-3\lZ3qj  
} V9 qZa  
file://new InsertSort().sort(data); )2t!= ua  
insertSort(data); foY=?mbL  
} c^0Yu Bps[  
/** gn"Y?IZ?  
* @param data 2(~Y ^_  
*/ )f(.{M  
private void insertSort(int[] data) { wG6@. ;3  
int temp; 3";Rw9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DrE +{Spm  
} 2K?~)q&t*  
} *c'nPa$+|S  
} j. UQLi&`  
pMZKF=  
} ^~~&[wY  
8l,`~jvU!*  
归并排序: h#a;(F4_7  
pUtd_8  
package org.rut.util.algorithm.support; *PQu9>1w  
v,z s dr"d  
import org.rut.util.algorithm.SortUtil; %Ci`O hT  
PAG.],"D  
/** 0 ?kaXD  
* @author treeroot wc z|Zy  
* @since 2006-2-2 pm$ZKM  
* @version 1.0 pE.f}  
*/ -WiOs;2~/  
public class MergeSort implements SortUtil.Sort{ Us4J[MW<  
ds@X%L;_  
/* (non-Javadoc) 7-a[W   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ($a ?zJr  
*/ zs#s"e:jeR  
public void sort(int[] data) { h'Tn&2r6  
int[] temp=new int[data.length]; Q|40 8EM  
mergeSort(data,temp,0,data.length-1); X"QIH|qx-  
} 0uX"KL]Elf  
sjh>i>t  
private void mergeSort(int[] data,int[] temp,int l,int r){ P(OgT/7A  
int mid=(l+r)/2; &6!~Q,;K-  
if(l==r) return ;  z.fh4p  
mergeSort(data,temp,l,mid); %JmRJpCvR  
mergeSort(data,temp,mid+1,r); _ 4:@+{  
for(int i=l;i<=r;i++){ QP/6N9/  
temp=data; [^wEKRt&  
} _hP siZY9  
int i1=l; N[e QT  
int i2=mid+1; cBICG",TA  
for(int cur=l;cur<=r;cur++){ H:9Z.|{Gv  
if(i1==mid+1) 56 6vjE  
data[cur]=temp[i2++]; m\a_0!K  
else if(i2>r) R? aE:\A  
data[cur]=temp[i1++]; \~V Z Y  
else if(temp[i1] data[cur]=temp[i1++]; 9=,^^,q  
else !e~Yp0gX#  
data[cur]=temp[i2++]; K:PzR,nn  
} scmn-4j'{  
} }$DLa#\-  
hjCFN1 #Sa  
} l#7].-/  
G dZ_  
改进后的归并排序: z@!zQ Vp  
m)G=4kK52-  
package org.rut.util.algorithm.support; RQ?T~ASs  
/18Z4TA  
import org.rut.util.algorithm.SortUtil; ]y&w)-0  
aoNTRJ c$  
/** 2+KOUd&jS  
* @author treeroot <~aQ_l  
* @since 2006-2-2  _@es9  
* @version 1.0 K:}~8 P>^  
*/ Be"Swz(n  
public class ImprovedMergeSort implements SortUtil.Sort { QuuR_Ao?c'  
|ocIp/ $  
private static final int THRESHOLD = 10; (qn ;MN6<  
x!\FB.h4!(  
/* |~'D8 g:Ak  
* (non-Javadoc) J?/.|Y]e  
* O6rrv,+_L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >dH5n$Gb  
*/ <^:e)W  
public void sort(int[] data) { g=eYl_P6  
int[] temp=new int[data.length]; NOOP_:(7H  
mergeSort(data,temp,0,data.length-1); .Z=4,m>  
}  =[Lo9Sg  
Vp3 9`m-W  
private void mergeSort(int[] data, int[] temp, int l, int r) { V,,/}f '  
int i, j, k; e_C9VNP  
int mid = (l + r) / 2; ]TTX<R ZLr  
if (l == r) 0,)Ao8  
return; _ED,DM  
if ((mid - l) >= THRESHOLD) J &,N1B  
mergeSort(data, temp, l, mid); i!zh9,i>M  
else L||_Jsu  
insertSort(data, l, mid - l + 1); 5+U2@XV  
if ((r - mid) > THRESHOLD) (nP 6Xq  
mergeSort(data, temp, mid + 1, r); SB5DL_q  
else ?h`Ned0P  
insertSort(data, mid + 1, r - mid); ] iKFEd  
BKoc;20;  
for (i = l; i <= mid; i++) { 1FfdW>ay*  
temp = data; $V"NB`T  
} qX'w}nJ}H}  
for (j = 1; j <= r - mid; j++) { xl5n(~g)p  
temp[r - j + 1] = data[j + mid]; X|.M9zIx  
} X1*6qd+E  
int a = temp[l]; by*>w/@9)k  
int b = temp[r]; JyPsRpi\  
for (i = l, j = r, k = l; k <= r; k++) { 2N]u!S;d  
if (a < b) { W":is"  
data[k] = temp[i++]; muLt/.EZ  
a = temp; i4T U}.h8  
} else { m35Blg34  
data[k] = temp[j--]; A`4Di8'Me  
b = temp[j]; KMz\h2X  
} \=+ s3p5N  
} \ iL&Aq}BO  
} Qy ; M:q  
1j*I`xZ  
/** oOk.Fq  
* @param data '8~cf  
* @param l O[RmQ8ll  
* @param i 1jZ:@M :  
*/ rI&GM |  
private void insertSort(int[] data, int start, int len) { rl)(4ad=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9GnNL I{  
} riI0k{   
} Z<a6U 3  
} 4)=LOGW  
} TQ&%SMCn  
hq9b  
堆排序: od>DSn3T  
y:!MWZ  
package org.rut.util.algorithm.support; x&3!z[m@@  
{]ZZ]  
import org.rut.util.algorithm.SortUtil; (_ov _3  
Xu#\CYk  
/** gF% lwq  
* @author treeroot ,hK0F3?H>  
* @since 2006-2-2 lo:]r.lX{  
* @version 1.0 Du>dTi~  
*/ VVuL+i  
public class HeapSort implements SortUtil.Sort{ #bPio  
g~d}?B\<@  
/* (non-Javadoc) Egt;Bj#%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x8p#WB  
*/ |u)?h] >  
public void sort(int[] data) { &Pt|  
MaxHeap h=new MaxHeap(); EWN$ILdD  
h.init(data); e , zR  
for(int i=0;i h.remove(); /:>f$k4~h  
System.arraycopy(h.queue,1,data,0,data.length); Ygn"7  
} 2F-!SI  
x]%e_  
private static class MaxHeap{ 84P^7[YX>  
h$ M+Yo+  
void init(int[] data){ k ]x64hgm  
this.queue=new int[data.length+1]; ~BCSm]j  
for(int i=0;i queue[++size]=data; pTZPOv#?Q  
fixUp(size); I/9ZUxQCyG  
} %" $.2O@  
} #{(?a.:  
P,!W\N%3  
private int size=0; ?/"@WP9  
+S M $#  
private int[] queue; P*/px4;6  
ro37H2^Ty  
public int get() { xkl'Y*  
return queue[1]; \Ja%u"D A  
}  ;9c3IK@  
oUZwZ_yKW  
public void remove() { 7"=  
SortUtil.swap(queue,1,size--); ,oDZ:";  
fixDown(1); g'Ft5fQ"o/  
} }Evyfc#D  
file://fixdown fl~k')s  
private void fixDown(int k) { V~5vVY_HG&  
int j; ))!Z2PfD  
while ((j = k << 1) <= size) { %Ua*}C   
if (j < size %26amp;%26amp; queue[j] j++; D`e!CprF  
if (queue[k]>queue[j]) file://不用交换 >8SX,  
break; Z!6\KV]  
SortUtil.swap(queue,j,k); }"fP,:n"KN  
k = j; $c0SWz  
} HhNH"b&  
} k(\HAIW  
private void fixUp(int k) { IGql^,b  
while (k > 1) { dk({J   
int j = k >> 1; t=S94 ^g  
if (queue[j]>queue[k]) <PW*vo9v  
break; | x{:GWq  
SortUtil.swap(queue,j,k); 3z: rUhA  
k = j; qYIBP?`g  
} EBw}/y{Kt  
} )aqu f<u@  
u4$d#0sA  
} dT,X8 "  
H1|X0 a(j  
} *we3i  
=0,")aa!  
SortUtil: {exF" ap  
Du$kDCU  
package org.rut.util.algorithm; \ ;Hj,z\  
G#duZNBdc  
import org.rut.util.algorithm.support.BubbleSort; P>L-,R(7e  
import org.rut.util.algorithm.support.HeapSort; }<FBcc(n  
import org.rut.util.algorithm.support.ImprovedMergeSort; D.qbzJz  
import org.rut.util.algorithm.support.ImprovedQuickSort; S3hJL:3c  
import org.rut.util.algorithm.support.InsertSort; F#4?@W  
import org.rut.util.algorithm.support.MergeSort; t K{`?NS  
import org.rut.util.algorithm.support.QuickSort; zo@>~G3$9  
import org.rut.util.algorithm.support.SelectionSort; o'myo.k{  
import org.rut.util.algorithm.support.ShellSort; &[I#5 bGk  
\EYhAx`2  
/** ~,R_  
* @author treeroot |\?-k  
* @since 2006-2-2 g_>)Q  
* @version 1.0 - K}@Gp  
*/ +?MjY[8j  
public class SortUtil { BEPDyy  
public final static int INSERT = 1; j/9FiuK  
public final static int BUBBLE = 2; Podm 3b  
public final static int SELECTION = 3; +qpD>5#  
public final static int SHELL = 4; ~ ;)@a  
public final static int QUICK = 5; $g#X9/+<  
public final static int IMPROVED_QUICK = 6; .eZ4?|at.F  
public final static int MERGE = 7; ,2H5CFX/  
public final static int IMPROVED_MERGE = 8; OD>-^W t;%  
public final static int HEAP = 9; ; {I{X}b  
rVQ:7\=Z  
public static void sort(int[] data) { u9mMkzgSkP  
sort(data, IMPROVED_QUICK); /CKkT.Le  
} "TtK!>!.  
private static String[] name={ a+\ Gz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~<v`&Gm?"  
}; M%&`&{  
}kL% l  
private static Sort[] impl=new Sort[]{ q7 Uu 8JXF  
new InsertSort(), ?Dd2k%o  
new BubbleSort(), 'y-IE#!5  
new SelectionSort(), H W.S~eLw*  
new ShellSort(), qK|r+}g|&  
new QuickSort(), A!iH g__/t  
new ImprovedQuickSort(), gADt%K2 #Z  
new MergeSort(), S)g5Tu)  
new ImprovedMergeSort(), L=Dx$#|  
new HeapSort() Y0|~]J(B  
}; z RvYN  
h]@Xucc  
public static String toString(int algorithm){ @!%<JZEz3  
return name[algorithm-1]; e yTYg  
} Gjy'30IF  
Duptles  
public static void sort(int[] data, int algorithm) { vU{ZB^+&6o  
impl[algorithm-1].sort(data); 2Y  6/,W  
} a^Zn }R r  
4pA<s-  
public static interface Sort { #J2856bzS  
public void sort(int[] data); j?w7X?1(  
} ` mCcD  
>Cd%tIie*  
public static void swap(int[] data, int i, int j) { q;kM eE*  
int temp = data; u#J5M&#  
data = data[j]; *WMcE$w/D  
data[j] = temp; ?0'bf y]  
} pk;bx2CP8  
} 0" R|lTYq  
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