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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。 D;Bij=  
插入排序: Q?g#?z&Pu\  
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package org.rut.util.algorithm.support; ['%$vnS5S  
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import org.rut.util.algorithm.SortUtil; ] >4CBm$  
/** Fd1t/B,  
* @author treeroot qlNB\~HCe  
* @since 2006-2-2 !q8"Q t  
* @version 1.0 M(|6YF7u  
*/ L=_   
public class InsertSort implements SortUtil.Sort{ W6A-/;S\  
%7S{g  
/* (non-Javadoc) yADX^r(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N hY`_?)  
*/ GzN /0:b  
public void sort(int[] data) { sqv!,@*q  
int temp; hU~up a<dD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oG$OZTc  
} >4^,[IO/  
} /* G-\|  
} ]=%oBxWAP  
U&'Xs z  
} 8+n *S$  
wqasI@vyu  
冒泡排序: &-c{  
tJa*(%Z?f  
package org.rut.util.algorithm.support; \hO}3;*&  
c$n`=NI  
import org.rut.util.algorithm.SortUtil; .5E6 MF  
+v)+ k  
/** "<$JU@P  
* @author treeroot aInh?-  
* @since 2006-2-2 \uyZl2=WWa  
* @version 1.0 *K'#$`2  
*/ *v:o`{vM[  
public class BubbleSort implements SortUtil.Sort{ -d]v6q'1  
0 /)OAw"m  
/* (non-Javadoc) i4dy0jfN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [KW9J}]  
*/ nkO4~p  
public void sort(int[] data) { #GfM!<q<  
int temp; 6 9s%   
for(int i=0;i for(int j=data.length-1;j>i;j--){ XE`u  
if(data[j] SortUtil.swap(data,j,j-1); l|S_10x5  
} b^'>XT~1J&  
} (o2.*x  
} d9.I83SS  
} (v0i]1ly[  
eAK=ylF;  
} Yc-gJI*1  
6#;u6@+}yy  
选择排序: 7.nNz&UG]5  
Q- }cB  
package org.rut.util.algorithm.support; x4CSUcKb  
vduh5.  
import org.rut.util.algorithm.SortUtil; 9!,f4&G`  
p1']+4r%  
/** X?z CB  
* @author treeroot y(yBRR  
* @since 2006-2-2 mNPz%B  
* @version 1.0 Z5 Tu*u=  
*/ G4,.kK  
public class SelectionSort implements SortUtil.Sort { AmX ~KK  
CTf39R|7_  
/* ,aU8. J_U  
* (non-Javadoc) THcX.%ToT  
* B42qiV2/k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jyFKO[s\X  
*/ m~`f0  
public void sort(int[] data) { 4Jk[X>I~  
int temp; o<L=l Q  
for (int i = 0; i < data.length; i++) { _}l7f  
int lowIndex = i; X_(n  
for (int j = data.length - 1; j > i; j--) { jMP;$w  
if (data[j] < data[lowIndex]) { IQyw>_~]  
lowIndex = j; m/"}Y]n!  
} L rhQG  
} DoFF<LXBt  
SortUtil.swap(data,i,lowIndex); ^TqR0a-*  
} |5(un/-C  
} bmw"-W^U[  
Ih%LKFT  
} ,H@ x.  
|6w {%xC?"  
Shell排序: PcEE@W9  
jP )VTk_  
package org.rut.util.algorithm.support; /MbWS(RT  
1v'|%B;O  
import org.rut.util.algorithm.SortUtil; K}!YXy h  
XSktb k  
/** "rcV?5?v~  
* @author treeroot ?Vc/mO2X  
* @since 2006-2-2 S20E}bS:>  
* @version 1.0 ) B[S4K2  
*/ tWI %P&b  
public class ShellSort implements SortUtil.Sort{ c{\x< AwO  
;*>':-4  
/* (non-Javadoc) 7D=gAMPvJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2T-3rC)  
*/ WjF#YW\  
public void sort(int[] data) { 8M6Qn7{L  
for(int i=data.length/2;i>2;i/=2){ N3&n"w _d  
for(int j=0;j insertSort(data,j,i); ,H5o/qNU`{  
} wmaj[e,h  
} I8XU '  
insertSort(data,0,1); _MzdbUb5,  
} nT%<!/}!  
o(Q='kK  
/** U>a~V"5,u  
* @param data 43/!pW  
* @param j BF(Kaf;<t.  
* @param i 0Rz",Mu>  
*/ 1V;m8)RF  
private void insertSort(int[] data, int start, int inc) { 1zIrU6H2;_  
int temp; P+(Ys[J3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FfibR\dhY  
} ~uweBp~O  
} Z]k+dJ[-  
} vU!<-T#  
V w5@)l*f  
} (lLCAmK 5?  
j)lgF:  
快速排序: {3N5Fi7S  
FSyeDC^@  
package org.rut.util.algorithm.support; QUi=ZD1  
jHM}({)-  
import org.rut.util.algorithm.SortUtil; fR,7l9<%Zp  
V6tUijz  
/** !kWx'tJ$  
* @author treeroot q Qc-;|8  
* @since 2006-2-2 ez^b{s`  
* @version 1.0 8@BN6  
*/ 6a*OQ{8  
public class QuickSort implements SortUtil.Sort{ fXB64MNo  
=d1i<iw?-  
/* (non-Javadoc) 9 p`|~^X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r]O8|#P,Z$  
*/ \++#adN:K  
public void sort(int[] data) { KL+,[M@ F  
quickSort(data,0,data.length-1); hG>3y\!#  
} 'sN (=CQ  
private void quickSort(int[] data,int i,int j){ zXT[}J VV  
int pivotIndex=(i+j)/2; _|KeB(W  
file://swap KGsW*G4U=  
SortUtil.swap(data,pivotIndex,j); (#VF>;;L  
Bt1 &C?_$T  
int k=partition(data,i-1,j,data[j]); Tsl0$(2W  
SortUtil.swap(data,k,j); few=`%/  
if((k-i)>1) quickSort(data,i,k-1); m; m4/z3U  
if((j-k)>1) quickSort(data,k+1,j); o3xfif  
P:tl)ob  
} bPo*L~xdk  
/** 5: O,-b&  
* @param data 6ZwFU5)QE/  
* @param i D3kx&AR  
* @param j UZ3oc[#D=]  
* @return =]hPX  
*/ e(;nhU3a*,  
private int partition(int[] data, int l, int r,int pivot) { I DtGtkF  
do{ Zmr*$,v<y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sp&)1?!M  
SortUtil.swap(data,l,r); bx%P-r31  
} .LEn~ 8  
while(l SortUtil.swap(data,l,r); 2 NrMse  
return l; H2D j`0  
} ^g*2jH+  
4@ =l'Fw  
} mp+lN:  
a>/jW-?  
改进后的快速排序: 2=ZZR8v  
_+x&[^gjP  
package org.rut.util.algorithm.support; o9D]\PdL>  
F` gQ[  
import org.rut.util.algorithm.SortUtil; $XO#qOW  
Z|dng6ck  
/** 4.0JgX  
* @author treeroot B:QAG  
* @since 2006-2-2 O)WduhlGQ  
* @version 1.0 YF(TG]?6  
*/ RB `<Zw  
public class ImprovedQuickSort implements SortUtil.Sort { Y]!{ n W  
T<=]Vg)^r"  
private static int MAX_STACK_SIZE=4096; *O@uF4+!1  
private static int THRESHOLD=10; dr8`;$;G*  
/* (non-Javadoc) ~i)IY1m"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vTF_`X  
*/ *Mr?}_,X*  
public void sort(int[] data) { 84$#!=v  
int[] stack=new int[MAX_STACK_SIZE]; om'DaG`A  
+:fr(s!OE  
int top=-1; ??.9`3CYo  
int pivot; 7Yrp#u1!  
int pivotIndex,l,r; H3Z"u  
K=mW`XXup  
stack[++top]=0; WQT;k0;T]  
stack[++top]=data.length-1; _N&]w*ce  
K,\Bj/V(  
while(top>0){ rxJWU JMxK  
int j=stack[top--]; }n91aE3v  
int i=stack[top--]; +r 2\v  
WSPlM"h  
pivotIndex=(i+j)/2; hWqI*xSaJ  
pivot=data[pivotIndex]; 1Ev#[FOc  
t/9,JG  
SortUtil.swap(data,pivotIndex,j); "mm|0PUJ  
56R)631]p  
file://partition -8r9DS -/W  
l=i-1; ]rP'\a  
r=j; G[=8Ko0U+n  
do{ nQW`X=Ku  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |p7k2wzN  
SortUtil.swap(data,l,r); h"~GaI  
} R0!qweGi@  
while(l SortUtil.swap(data,l,r); ~J:"sUR  
SortUtil.swap(data,l,j); R^=)Ucj  
Ni4*V3VB  
if((l-i)>THRESHOLD){ JZ  
stack[++top]=i; *l-(tp5  
stack[++top]=l-1; z|gG%fM  
} jS,zdJs=  
if((j-l)>THRESHOLD){ `*nK@:  
stack[++top]=l+1; rZBOWT  
stack[++top]=j; e~,/Z\i  
} 6s"Erq5q  
D9|?1+Kc  
} uBe1{Z  
file://new InsertSort().sort(data); xe3t_y  
insertSort(data); O]Mz1 ev|  
} 4&c7^ 4w~  
/** Tpv]c  
* @param data 9-9:]2~g!  
*/ cNd2XQB9=  
private void insertSort(int[] data) {  FGP~^Dr/  
int temp; 68^5X"OGF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dx-G0 KIG  
} q3s +?&  
} t,2Q~ied=  
} faVR %  
`Oc`I9  
} A%G \ AT  
ul',!js?  
归并排序: 1JU1XQi  
+AT!IZrB2i  
package org.rut.util.algorithm.support; /{~cUB,Um  
DNy1} 3wg  
import org.rut.util.algorithm.SortUtil; ?kvkdHEO_  
?OU+)kgzh  
/** u$ZahN!  
* @author treeroot D* oJz3[  
* @since 2006-2-2 e8TJ =}\  
* @version 1.0  /_r g*y*  
*/ jR^>xp;  
public class MergeSort implements SortUtil.Sort{ AF qut  
> qSaF  
/* (non-Javadoc) / !*gH1 s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p?X`f#  
*/ I+Q`i:\,q  
public void sort(int[] data) { :X`Bc"  
int[] temp=new int[data.length]; F+`DfI]/m  
mergeSort(data,temp,0,data.length-1); 3??*G8Yp  
} om"q[Tudc  
*Iu .>nw  
private void mergeSort(int[] data,int[] temp,int l,int r){ Zh WtY  
int mid=(l+r)/2; $z9z'^HqO  
if(l==r) return ; b (,X3x*  
mergeSort(data,temp,l,mid); 7x%0 ^~/n  
mergeSort(data,temp,mid+1,r); C(-bh]J  
for(int i=l;i<=r;i++){ pEjA*6v|,  
temp=data; i8`&XGEd  
} GA{Q6]B  
int i1=l; J!@$lyH  
int i2=mid+1; 6c3+q+#J2  
for(int cur=l;cur<=r;cur++){ &S.zc@rN  
if(i1==mid+1) 'CDRb3w}B  
data[cur]=temp[i2++]; Z' 0Gd@/  
else if(i2>r) c0Tda  
data[cur]=temp[i1++]; T#1>pED  
else if(temp[i1] data[cur]=temp[i1++]; ]Qp0|45=  
else G;+hc%3y  
data[cur]=temp[i2++]; -L/5Nbup  
} MK]S205{  
} }{^i*T5rl  
{.We%{4V  
} 1R/=as,R  
7/;Xt&  
改进后的归并排序: =W9;rQm  
&/7AW(?  
package org.rut.util.algorithm.support; "jVMk  
T x_n$ &  
import org.rut.util.algorithm.SortUtil; 13]sZ([B%|  
vXnTPjbE  
/** K%<Z"2!+  
* @author treeroot <!\J([NM8  
* @since 2006-2-2 Riq5Au?*)  
* @version 1.0 %aX<p{EY  
*/ BPnZ"w_  
public class ImprovedMergeSort implements SortUtil.Sort { ,=tVa])  
`@{qnCNQ  
private static final int THRESHOLD = 10; A$RN7#  
9-+6Ed^2  
/* x C'>W"pY  
* (non-Javadoc) DVYY1!j<  
* 'M\ou}P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P 7 [p$Z  
*/ Llf>C,)  
public void sort(int[] data) { g eaeOERc  
int[] temp=new int[data.length]; G}<q  
mergeSort(data,temp,0,data.length-1); %Gn(b 1X  
} A+j~oR  
XcA4EBRj  
private void mergeSort(int[] data, int[] temp, int l, int r) { @:i>q$aF  
int i, j, k; l}X3uy S  
int mid = (l + r) / 2; t-SGG{  
if (l == r) +fzZ\  
return; r+HJ_R,5A  
if ((mid - l) >= THRESHOLD) &X^~%\F:2  
mergeSort(data, temp, l, mid); !+cRtCaA::  
else `xkJ.,#Io  
insertSort(data, l, mid - l + 1); kTG}>I  
if ((r - mid) > THRESHOLD) n<7#?X7  
mergeSort(data, temp, mid + 1, r); M`umfw T  
else H7)(<6b,z  
insertSort(data, mid + 1, r - mid); ^HHJ.QR  
=5_8f  
for (i = l; i <= mid; i++) { LX j Tqp'  
temp = data; ?x]T &S{  
} <;x+ ?j  
for (j = 1; j <= r - mid; j++) { dL")E|\\k  
temp[r - j + 1] = data[j + mid]; ~s{$&N  
} bTKzwNx  
int a = temp[l]; '<m[  
int b = temp[r]; 9Dd/g7  
for (i = l, j = r, k = l; k <= r; k++) { }6eWdm!B  
if (a < b) { n$}c+1   
data[k] = temp[i++]; P/t$xqAL  
a = temp; NF0} eom  
} else { 2P9hx5PiV  
data[k] = temp[j--]; NS=puo  
b = temp[j]; 9F k wtF  
} Cs%'Af  
} Y&k'4Y%  
} \J0gzi.  
a+*|P  
/** 4MRHz{`wa  
* @param data CN: 36  
* @param l cX1"<fD o  
* @param i 9n!3yZVSe  
*/ z;'"c3qG8  
private void insertSort(int[] data, int start, int len) { >'Nrvy%&0  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4|Jy]  
} &e[/F@\%  
} $K\\ 8$Z  
} p=9G)VO  
} V )1SZt@x  
n?aogdK$V  
堆排序: \I#2Mq?  
LtH;#Q  
package org.rut.util.algorithm.support; Yk<?HNf  
&e_M \D  
import org.rut.util.algorithm.SortUtil; p%J,af  
V|xR`Q  
/** 0_qqBL.4  
* @author treeroot a+zE`uY  
* @since 2006-2-2 ykl./uY'  
* @version 1.0 1NN99^ q  
*/ tb&{[|O^  
public class HeapSort implements SortUtil.Sort{ Fg5c;sls  
^b;.zhp8;N  
/* (non-Javadoc)  V '^s5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .knRH^  
*/ lpve Yz  
public void sort(int[] data) { 2#6yO`?uo  
MaxHeap h=new MaxHeap(); b)$<aFl  
h.init(data); E[2c`XFd8  
for(int i=0;i h.remove(); &OGY?[n  
System.arraycopy(h.queue,1,data,0,data.length); QS_" fsyN:  
} X,x{!  
^7TM.lE  
private static class MaxHeap{ =wU08}  
nd_d tsp#  
void init(int[] data){ GR O[&;d`  
this.queue=new int[data.length+1]; +n^$4f  
for(int i=0;i queue[++size]=data; Y'bDEdeT  
fixUp(size); "=9L7.E)  
} ?K I_>{  
} 6/s#'#jh  
R S;r  
private int size=0; .\{GU9|nO  
hXbb+j  
private int[] queue; gjvKrg  
vlm&)DIt  
public int get() { "-A@>*g  
return queue[1]; RjSVa.x  
} '(&.[Pk:"  
6BLw 4m=h  
public void remove() { XL g6?Nu  
SortUtil.swap(queue,1,size--); _hAp@? M  
fixDown(1); OPBnU@=R  
} q%Obrk  
file://fixdown DDc?G Y:  
private void fixDown(int k) { ,t5Ku)eNm  
int j; J03yFT,dF  
while ((j = k << 1) <= size) { E7oL{gU  
if (j < size %26amp;%26amp; queue[j] j++; d1``} naNw  
if (queue[k]>queue[j]) file://不用交换 cm6cW(x6  
break; y!mjZR,&  
SortUtil.swap(queue,j,k); Y%|f<C)lx2  
k = j; VoWlBH  
} #G$_\bt  
} (6>8Dt 9[  
private void fixUp(int k) { 5Ee%!Pk  
while (k > 1) { \@GA;~x.b  
int j = k >> 1; vM1f-I-  
if (queue[j]>queue[k]) . sgV  
break; 4mQ:i7~  
SortUtil.swap(queue,j,k); 29 Yg>R!/  
k = j; QP >P  
} ~H7m7  
} .1[K\t)2  
(.m0hN!~u  
} m:)v>vu  
DZilK:  
} "S_t%m&R  
ygWo9?  
SortUtil: iZwt,)(  
UOy`N~\gh+  
package org.rut.util.algorithm; O9dIobu4  
a5:YP  
import org.rut.util.algorithm.support.BubbleSort; o[O-|XL_  
import org.rut.util.algorithm.support.HeapSort; F%+/j5~^  
import org.rut.util.algorithm.support.ImprovedMergeSort; I|n<B"Q6^  
import org.rut.util.algorithm.support.ImprovedQuickSort; @i$9c)D  
import org.rut.util.algorithm.support.InsertSort; 9`$fU)K[Pl  
import org.rut.util.algorithm.support.MergeSort; go@UE2qw  
import org.rut.util.algorithm.support.QuickSort; /al(=zf  
import org.rut.util.algorithm.support.SelectionSort; @'/\O-  
import org.rut.util.algorithm.support.ShellSort; 1<\@i{;xsU  
liA)|.H  
/** SQ1.jcWW[  
* @author treeroot k/u6Cw0/  
* @since 2006-2-2 o;D87E6Z  
* @version 1.0 zVd2kuI&?  
*/ C*,-lk0b@  
public class SortUtil { [ C,<Q  
public final static int INSERT = 1; K;sH0*  
public final static int BUBBLE = 2; cuB~A8H#}  
public final static int SELECTION = 3; w\:-lXw  
public final static int SHELL = 4; $ [by)  
public final static int QUICK = 5; B= jJ+R  
public final static int IMPROVED_QUICK = 6; 0;#%KC,  
public final static int MERGE = 7; SirjWYap  
public final static int IMPROVED_MERGE = 8; kBS;SDl)  
public final static int HEAP = 9; =%%\b_\L  
&<_*yl p  
public static void sort(int[] data) { A{bt Z#k  
sort(data, IMPROVED_QUICK); <_dyUiT$J  
} Yo/U/dB  
private static String[] name={ \|F4@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hJ (Q^Z  
}; 5IOOVYl  
` {gkL-  
private static Sort[] impl=new Sort[]{ lQ<2Vw#Yl  
new InsertSort(), +\fr3@Yc  
new BubbleSort(), =!*e; L  
new SelectionSort(), j#f+0  
new ShellSort(), *!$4   
new QuickSort(), rr>QG<i;G  
new ImprovedQuickSort(), &na#ES $X,  
new MergeSort(), =;W"Pi;*  
new ImprovedMergeSort(), .0:BgM  
new HeapSort() 3{ LXx  
}; O#7ONQfBO  
Hzcy '  
public static String toString(int algorithm){ :2pd2S  
return name[algorithm-1]; XI} C|]#  
} GbFLu`Iu  
y< W?hE[  
public static void sort(int[] data, int algorithm) { 2?u>A3^R  
impl[algorithm-1].sort(data); AjKP -[  
} 9c1g,:8\  
=Mzg={)v  
public static interface Sort { g{.>nE^Sc5  
public void sort(int[] data); l"5$6h  
} s:'M[xI  
ZR.1SA0x?O  
public static void swap(int[] data, int i, int j) { [^EU'lewnW  
int temp = data; \_Nr7sc\  
data = data[j]; 5+vCuVZ  
data[j] = temp; |Zr5I";  
} ;5:g%Dt  
} x#-uf  
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