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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。 VR8-&N  
插入排序: V]6dscQ  
;6 D@A  
package org.rut.util.algorithm.support; u(.e8~s8  
@Sn(lnlB  
import org.rut.util.algorithm.SortUtil; &{n.]]%O.  
/** Lz Kj=5'Y  
* @author treeroot vkV0On  
* @since 2006-2-2 a 7 V-C  
* @version 1.0 2DDtu[}  
*/ 'W^YM@  
public class InsertSort implements SortUtil.Sort{ cxC6n%!;y  
 @tnz]^V  
/* (non-Javadoc) K:[F%e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) epe)a  
*/ ;%9|k U  
public void sort(int[] data) { 9!\B6=r y4  
int temp; DH!~ BB;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OX7M8cmc+  
} ?pmHFlx  
} a$OE0zn`  
} X=&ET)8-Y  
[=q1T3  
} {*" |#6-  
1W LXM^ 4  
冒泡排序: !sP {gi#=  
wH&!W~M  
package org.rut.util.algorithm.support; f|c{5$N!  
k@J&IJ  
import org.rut.util.algorithm.SortUtil; 20h, ^  
'3fu  
/** s?}e^/"v  
* @author treeroot H[$"+&q  
* @since 2006-2-2 xwq (N_  
* @version 1.0 L|7R9+ZG  
*/ 9wwqcx)3(  
public class BubbleSort implements SortUtil.Sort{ s~g *@K>+  
n5NsmVW\x  
/* (non-Javadoc) hd<c&7|G'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }@+0/W?\.  
*/ YnAm{YyI  
public void sort(int[] data) { 5coyr`7mP  
int temp; $k%2J9O  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7(8;t o6(  
if(data[j] SortUtil.swap(data,j,j-1); <{cQM$ #  
} E6ElNgL  
} cp7=epho  
} t\,PB{P:J  
} m}t`FsB.  
WX?IYQ+  
} k$R-#f;  
KwSqKI7]0  
选择排序: HCs?iJ  
$a"Oc   
package org.rut.util.algorithm.support; a~}OZ&PG  
1};Stai'  
import org.rut.util.algorithm.SortUtil; 9}<ile7^  
<0&*9ZeD  
/**  "Og7rl  
* @author treeroot Id .nu/  
* @since 2006-2-2 pJ"qu,w  
* @version 1.0 IueFx u  
*/ )23H1  
public class SelectionSort implements SortUtil.Sort { W+?4jwqw  
Ckuh:bs  
/* <uw9DU7G  
* (non-Javadoc) 7' V@+5  
* ZDYJ\}=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >uhaW@d  
*/ K`zdc`/  
public void sort(int[] data) { m@v\(rT.  
int temp; k"zv~`i'  
for (int i = 0; i < data.length; i++) { )U:m:cr<  
int lowIndex = i; 97C]+2R%^  
for (int j = data.length - 1; j > i; j--) { u?(d gJ  
if (data[j] < data[lowIndex]) { c9 _ rmz8  
lowIndex = j; k2tF}  
} P* BmHz4KL  
} )lqAD+9Q  
SortUtil.swap(data,i,lowIndex); #a,PZDaE  
} bJ {'<J  
} 9 -a0:bP  
'$(^W@M#6  
} #'szP\  
~-Qw.EdC  
Shell排序: s8t;.^1}  
C XMLt  
package org.rut.util.algorithm.support; F/kWHVHU[  
g@!V3V  
import org.rut.util.algorithm.SortUtil; plstZ,#j  
08\, <9  
/** eJX9_6m-  
* @author treeroot _|I#{jK  
* @since 2006-2-2 zL0pw'4  
* @version 1.0 {ROVvs`  
*/ Vv=. -&'  
public class ShellSort implements SortUtil.Sort{ |3"KK  
+lcbi  
/* (non-Javadoc) 4p;`C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :{l_FY436  
*/ #r\4sVg  
public void sort(int[] data) { .|fH y  
for(int i=data.length/2;i>2;i/=2){ 4!yzsPJL  
for(int j=0;j insertSort(data,j,i); `mJ6K&t$<  
} j>"@,B g*  
} J<h $ wM  
insertSort(data,0,1); `l[c_%Bm  
} .?sx&2R2  
!M1"b;  
/** flbd0NB  
* @param data ;$wVu|&  
* @param j !?h;wR  
* @param i >SHhAEF  
*/ iz PDd{[  
private void insertSort(int[] data, int start, int inc) { z$. 88 ^  
int temp; K Z91-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n 0L^e  
} S|N_o   
} })Vi  
} E*K;H8}s  
_A9AEi'.  
} z46~@y%k  
xfe+n$~ c  
快速排序: jm/`iXnMf  
`1fY)d^ZS  
package org.rut.util.algorithm.support; >0TxUc_va  
Feq]U?  
import org.rut.util.algorithm.SortUtil; ;[OH(!  
i<Zc"v;  
/** VjZ|$k  
* @author treeroot Qpc__dA\  
* @since 2006-2-2 }WXi$(@v  
* @version 1.0 7;wd(8  
*/ . 3T3E X|G  
public class QuickSort implements SortUtil.Sort{ ( ^Nz9{  
5<Nx^D  
/* (non-Javadoc) o]oum,Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]&+s6{}  
*/ 3;]H1 1  
public void sort(int[] data) { 8'io$ 6d=  
quickSort(data,0,data.length-1); +VOK%8,p  
} BUXpC xQ  
private void quickSort(int[] data,int i,int j){ c 3)jccWTc  
int pivotIndex=(i+j)/2; R!gEwTk  
file://swap LFRlzz;  
SortUtil.swap(data,pivotIndex,j); j'"J%e]  
JU&c.p /  
int k=partition(data,i-1,j,data[j]); <6 Uf.u`  
SortUtil.swap(data,k,j); \"OG6G_>$  
if((k-i)>1) quickSort(data,i,k-1); Btn]}8K  
if((j-k)>1) quickSort(data,k+1,j); ; )@~  
_F|Ek;y%  
} sS'm!7*(3  
/** T}v4*O.,  
* @param data <}9lZEqY  
* @param i e=m42vIB-  
* @param j RQ" ,3.R==  
* @return d|Lj~x|  
*/ 4O!ikmY:t  
private int partition(int[] data, int l, int r,int pivot) { 12gU{VD  
do{  S9FE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .Rs^YZF  
SortUtil.swap(data,l,r); H8}oIA"b  
} X2~!(WxU F  
while(l SortUtil.swap(data,l,r); =^,m` _1  
return l; N2<!}Eyu  
} _g"<UV*H  
i2SR{e8:GF  
} 5MJS ~(  
#BH*Z(  
改进后的快速排序: p}U ~+:v  
Yufc{M00  
package org.rut.util.algorithm.support; $suzW;{#  
-;WGS o  
import org.rut.util.algorithm.SortUtil; B>P{A7Q  
)R1<N  
/** ^RIl  
* @author treeroot 0[W:d=C`a  
* @since 2006-2-2 U26}gT)  
* @version 1.0 5vnrA'BhBU  
*/ ~6LN6}~|.  
public class ImprovedQuickSort implements SortUtil.Sort { @*KZ}i@._  
5 #E`=C%  
private static int MAX_STACK_SIZE=4096; &`2)V;t  
private static int THRESHOLD=10; 8$Y9ORs4  
/* (non-Javadoc) $X,D(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (V2fRv  
*/ 8XE7]&)];  
public void sort(int[] data) { iSs:oH3l  
int[] stack=new int[MAX_STACK_SIZE]; ~q25Yx9W@  
/R wjCUf  
int top=-1; l}K37f  
int pivot; Jij*x>K>y  
int pivotIndex,l,r; 4ID5q~  
+A?U{q  
stack[++top]=0; <=C!VVk4f  
stack[++top]=data.length-1; <x>M o   
or}[h09qA  
while(top>0){ Z=vU}S>r|v  
int j=stack[top--]; aWF655Fs*  
int i=stack[top--]; IyG}H}  
m^;f(IK5  
pivotIndex=(i+j)/2; Q*ft7$l&  
pivot=data[pivotIndex]; }b.%Im<3R  
v"Es*-{B  
SortUtil.swap(data,pivotIndex,j); U z>+2m(  
g{&ui.ml&  
file://partition ^.QzQ1=D  
l=i-1; k~1?VQ+?M  
r=j; #!+:!_45  
do{ uJ v-4H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {&1/V  
SortUtil.swap(data,l,r); PB\x3pV!}  
} u.xnOcOH!  
while(l SortUtil.swap(data,l,r); s?L  
SortUtil.swap(data,l,j); *u;Iw{.{  
1#+S+g@#  
if((l-i)>THRESHOLD){ YS"=yye 3e  
stack[++top]=i; P71Lqy)5}A  
stack[++top]=l-1; ji0@P'^;  
} t\7[f >  
if((j-l)>THRESHOLD){ z!9-:  
stack[++top]=l+1; E+;7>ja  
stack[++top]=j; TAW/zpps$  
} ]N F[>uiW  
7WZ+T"O{I  
} ePo}y])2  
file://new InsertSort().sort(data); gc$l^`+M  
insertSort(data); Lt>IX")  
} O6^]=/wd  
/** @b2aNS<T  
* @param data aAUvlb  
*/ =Jb>x#Y  
private void insertSort(int[] data) { %n9aaoD  
int temp; JIq=* '  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >pe.oxY  
} 6(ol1 (U  
} $1`2 kM5  
} cSV aI  
yD}B%\45  
} l!u_"I8j5  
g]0_5?i  
归并排序: 3)ywX&4"L  
7zG_(83)K  
package org.rut.util.algorithm.support; [.wYdv35  
xU`p|(SS-  
import org.rut.util.algorithm.SortUtil; H9e<v4 c  
{R6ZKB  
/** $6SW;d+>n  
* @author treeroot <7jW _R@  
* @since 2006-2-2 8bld3p"^  
* @version 1.0 ~b8]H|<'Y  
*/ P/_['7  
public class MergeSort implements SortUtil.Sort{ j&qub_j"xX  
TarY|P7_  
/* (non-Javadoc) 1iF1GkLEq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pYf-S?Y/V  
*/ Qzw;i8n{  
public void sort(int[] data) { /mzlH  
int[] temp=new int[data.length]; NTs aW}g  
mergeSort(data,temp,0,data.length-1); Z(CkZll  
} "=MeM)K  
e$rZ5X  
private void mergeSort(int[] data,int[] temp,int l,int r){ b d!Y\OD  
int mid=(l+r)/2; },-H"Qs  
if(l==r) return ; Pe3o;mx  
mergeSort(data,temp,l,mid); X=&KayD  
mergeSort(data,temp,mid+1,r); hp|YE'uYT  
for(int i=l;i<=r;i++){ U&qZ"  
temp=data; /cP"h!P}~~  
} ?%[jR=w  
int i1=l; IW] rb/H  
int i2=mid+1; T]~ xj4  
for(int cur=l;cur<=r;cur++){ -zfR)(zG  
if(i1==mid+1) ]:J$w]\  
data[cur]=temp[i2++]; 7 HYwLG:\~  
else if(i2>r) + mT_QsLEv  
data[cur]=temp[i1++]; a9Zq{Ysj  
else if(temp[i1] data[cur]=temp[i1++]; {E|$8)58i  
else '!B&:X)  
data[cur]=temp[i2++]; 5\VWCI  
} c@L< Z`u  
} ~((O8@}J  
F*ylnB3z  
} DkDmE  
l+0oS'`V*L  
改进后的归并排序: BnF^u5kv%  
I{=Qtnlb  
package org.rut.util.algorithm.support; Nu)NqFG,  
=Nr-iae#  
import org.rut.util.algorithm.SortUtil; g *+>H1}  
 N4TV  
/** _7_Y={4=`  
* @author treeroot :?1Dko^  
* @since 2006-2-2 8'y$M] e9n  
* @version 1.0 0?|<I{z2  
*/ *.w 9c  
public class ImprovedMergeSort implements SortUtil.Sort { wi{3/  
O+x!Bg7   
private static final int THRESHOLD = 10; {(Es(Sb}c  
R 2vlFx/  
/* Q\sK"~@3  
* (non-Javadoc) $U-0)4yf  
* vo{--+{ky!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %JTpI`  
*/ 4 s9LB  
public void sort(int[] data) { t\O16O7S  
int[] temp=new int[data.length]; 4Ftu  
mergeSort(data,temp,0,data.length-1); lNO;O}8  
} *wjrR1#81x  
-jm Y)(\  
private void mergeSort(int[] data, int[] temp, int l, int r) { zX i 'kB  
int i, j, k; p0eX{xm  
int mid = (l + r) / 2; J C}D` h  
if (l == r) |-~Y#]  
return; Pr C{'XDlU  
if ((mid - l) >= THRESHOLD) a(ZcmYzXU  
mergeSort(data, temp, l, mid); |CbikE}kL  
else @oGcuE  
insertSort(data, l, mid - l + 1); 0#gK6o!  
if ((r - mid) > THRESHOLD) :7;@ZEe  
mergeSort(data, temp, mid + 1, r); H3oFORh  
else P16~Qj  
insertSort(data, mid + 1, r - mid); VuZr:-K/  
%E;'ln4h&,  
for (i = l; i <= mid; i++) { _7y[B&g[r  
temp = data; #~=Ry H  
} $3kH~3{]  
for (j = 1; j <= r - mid; j++) { 7F~X,Dk_  
temp[r - j + 1] = data[j + mid]; 9} .z;prz  
} es0hm2HT3  
int a = temp[l]; sV*H`N')S  
int b = temp[r]; hOK8(U0  
for (i = l, j = r, k = l; k <= r; k++) { n~Lt\K:  
if (a < b) { ]T) 'Hb  
data[k] = temp[i++]; _DEjF)S  
a = temp; z`b,h\  
} else { 7F.4Ga;  
data[k] = temp[j--]; % A0/1{(  
b = temp[j]; ql~J8G9  
} u_Z+;{]Pj  
} e&>2 n  
} `\ol,B_l  
i,VMd  
/** O^rDHFj,  
* @param data b| (: [nB  
* @param l |JsZJ9W+J  
* @param i _,*r_D61S  
*/ KqP#6^ _  
private void insertSort(int[] data, int start, int len) { )=(kBWM  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M869MDo  
} *qpSXmOz  
} M)(DZ}  
} oxtay7fx  
} F((4U"   
_)iCa3z  
堆排序: An0GPhC  
yaX iE_.  
package org.rut.util.algorithm.support; cm+P]8o%{  
&#i"=\d  
import org.rut.util.algorithm.SortUtil; b7ZSPXV  
NwfVL4Xg  
/** sa8Vvzvo.  
* @author treeroot X5w$4Kj&4l  
* @since 2006-2-2 Zj Z^_X3  
* @version 1.0 b\5F]r  
*/ aDN` 6[  
public class HeapSort implements SortUtil.Sort{ 3$ PV2"  
TkF[x%o  
/* (non-Javadoc) bW:!5"_{H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IAyp2  
*/ \ 6MCxh6  
public void sort(int[] data) { .X;K%J2  
MaxHeap h=new MaxHeap(); "uf%iJ:%  
h.init(data); *=xr-!MEk  
for(int i=0;i h.remove();  _','9|  
System.arraycopy(h.queue,1,data,0,data.length); {\\T gs  
} U%/+B]6jP  
-ze J#B)C  
private static class MaxHeap{ R^e'}+Z  
K.yb ^dg5  
void init(int[] data){ 23jwAsSo  
this.queue=new int[data.length+1]; OcO3v'&  
for(int i=0;i queue[++size]=data; iJ|uvPCE  
fixUp(size); Y|/ 8up  
} VS|2|n1<6  
} DIUjn;>k8  
o,wUc"CE  
private int size=0; 7mfS*aCb  
'E.w=7z&  
private int[] queue; N)Z?Z+ }h  
EBmt9S  
public int get() { nT)vNWT=  
return queue[1]; EEL,^3KR  
} iam1V)V  
LXCx~;{\  
public void remove() { {7pli{`  
SortUtil.swap(queue,1,size--); D3K8F@d  
fixDown(1); <\S:'g"(  
} W!(LF7_!  
file://fixdown "^iYLQOC  
private void fixDown(int k) { &Hnz8Or!  
int j; FE;x8(;W8  
while ((j = k << 1) <= size) { uvS)8-o&F  
if (j < size %26amp;%26amp; queue[j] j++; E<*xx#p  
if (queue[k]>queue[j]) file://不用交换 S`]k>' l  
break; a-J.B.A$Z/  
SortUtil.swap(queue,j,k); Yz93'HDB  
k = j; J|rq*XD}q  
} d<x7{?~.DK  
} AT|3:]3E  
private void fixUp(int k) { v(%*b,^  
while (k > 1) { -H-~;EzU  
int j = k >> 1; r,2g^ K)6  
if (queue[j]>queue[k]) rQ snhv  
break; '}#9)}x!  
SortUtil.swap(queue,j,k); Ef{Vp;]  
k = j; UR5`ue ;  
} ;xn0;V'=  
} J4U1t2@)9  
2I{"XB  
} ;]:@n;c\  
caX< n>  
} h!9ei6  
ygl0k \  
SortUtil: dUdT7ixo  
_PR4`C*  
package org.rut.util.algorithm; )Xyn q(  
Yz)qcU  
import org.rut.util.algorithm.support.BubbleSort; J<lO= +mg  
import org.rut.util.algorithm.support.HeapSort; oe~b}:  
import org.rut.util.algorithm.support.ImprovedMergeSort; q- d:TMkc  
import org.rut.util.algorithm.support.ImprovedQuickSort; Y`wSv NU  
import org.rut.util.algorithm.support.InsertSort; 7E!5G2XX~~  
import org.rut.util.algorithm.support.MergeSort; `~q<N  
import org.rut.util.algorithm.support.QuickSort; r9G>jiw8  
import org.rut.util.algorithm.support.SelectionSort; L9#g)tf 8T  
import org.rut.util.algorithm.support.ShellSort; jZr q{Z<  
~WV"SaA)*U  
/** ]')RMg zM*  
* @author treeroot IV)j1  
* @since 2006-2-2 jmW7)jT8:  
* @version 1.0 n '6jou  
*/ +X]vl=0  
public class SortUtil { 7"D.L-H  
public final static int INSERT = 1; )@bQu~Y  
public final static int BUBBLE = 2; 3"\lu?-E  
public final static int SELECTION = 3; Pj% |\kbNs  
public final static int SHELL = 4; V Jll  
public final static int QUICK = 5; koi^l`B$  
public final static int IMPROVED_QUICK = 6; ^5 Tqy(M  
public final static int MERGE = 7; 63B?.  
public final static int IMPROVED_MERGE = 8; A&jlizN7  
public final static int HEAP = 9; E8&TO~"a]e  
, ++ `=o  
public static void sort(int[] data) { ufT`"i  
sort(data, IMPROVED_QUICK); II x#2r  
} uY'HT|@:{  
private static String[] name={ ^K@C"j?M/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ` sU/&  P  
}; ,$&&-p I]  
@Do= k  
private static Sort[] impl=new Sort[]{ ;sFF+^~L  
new InsertSort(), S|+o-[e8O  
new BubbleSort(), 4H]L~^CD  
new SelectionSort(), |P}y,pNQ  
new ShellSort(), u,4eCxYE$  
new QuickSort(), nzeX[*  
new ImprovedQuickSort(), JqiP>4Uwm^  
new MergeSort(), wLr_-vJ  
new ImprovedMergeSort(), wq`Bd  
new HeapSort() }RqK84K  
}; >[*qf9$  
bA->{OPkT  
public static String toString(int algorithm){ GR32S=\  
return name[algorithm-1]; Yg1  X  
} !g2+w$YVa  
sD wqH.L  
public static void sort(int[] data, int algorithm) { lHX72s|V  
impl[algorithm-1].sort(data); b;UJ 88  
} Q]>.b%s[  
q5:N2Jmo?z  
public static interface Sort { pyvSwD5t  
public void sort(int[] data); %84rL?S  
} h.t-`k7  
E< fVZ,  
public static void swap(int[] data, int i, int j) { \)|hogI|f  
int temp = data; !C: $?oU  
data = data[j]; M =r)I~  
data[j] = temp; 5XB H$&Td  
} TRq6NB  
} yz8jw:d^-  
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