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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。 t=BUN  
插入排序: !eGC6o}f  
E:,/!9n  
package org.rut.util.algorithm.support; sv2A-Dld  
Q1T$k$n  
import org.rut.util.algorithm.SortUtil; IDad9 Bx  
/** ] vz%iv_  
* @author treeroot fJ=0HNmX  
* @since 2006-2-2 sSr&:BOsi  
* @version 1.0 5us:adm[pD  
*/ Z|&MKG24  
public class InsertSort implements SortUtil.Sort{ `vU%*g&R  
kYM~d07 V  
/* (non-Javadoc) |O{m2Fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2% MC Yn  
*/ im${3>26  
public void sort(int[] data) { /{EP*,/*  
int temp; E`kG-Q5Dw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '@a}H9>}  
} U2ohHJ``  
} 6gkV*|U,e  
} /?wtF4  
nyX2|m&  
} OstQqV%@  
GiJ *Wp  
冒泡排序: i"1Mfz~e  
O+nEXS\rQ  
package org.rut.util.algorithm.support; Hf%@3X  
k)i3   
import org.rut.util.algorithm.SortUtil; J9..P&c\  
ISzqEi  
/** :W"~ {~#?  
* @author treeroot ;/bewivNJ  
* @since 2006-2-2 H/"-Z;0{  
* @version 1.0 vRznw&^E  
*/ q?H|o(  
public class BubbleSort implements SortUtil.Sort{ Ve8=b0&Y#j  
&r[`>B{tP  
/* (non-Javadoc) <S5BDk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UgRhWV~f0  
*/  |{&{  
public void sort(int[] data) { ww)<E`eGi  
int temp; -r!. 9q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ dydc}n  
if(data[j] SortUtil.swap(data,j,j-1); .fn \]rUv  
} !({}(!P .  
} T5|q RlW  
} biLs+\C  
} Z EQ@IS:Y  
Tg7an&#  
} FX;QG94!  
M#ZcY  
选择排序: #9=Vg  
c\/=iVw,  
package org.rut.util.algorithm.support; :v YYfs&  
E}%B;"b/Tj  
import org.rut.util.algorithm.SortUtil; CYt?,qk-r  
N' F77 .  
/** tCw<Ip  
* @author treeroot %3s1z<;R[S  
* @since 2006-2-2 *}Xf!"I#]N  
* @version 1.0 #^#PPO  
*/ [m- >5H  
public class SelectionSort implements SortUtil.Sort { 36.Z0Z1'F>  
ke!?BZx  
/* 2"COP>  
* (non-Javadoc) MO[2~`,Q!  
* T!uM+6|Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QER?i;-wb  
*/ !zBhbmlKt  
public void sort(int[] data) { \h+AXs<j  
int temp; JX<)EZ!F  
for (int i = 0; i < data.length; i++) { ;[(oaK@+n  
int lowIndex = i; y$;/Vm_'  
for (int j = data.length - 1; j > i; j--) { V[mT<Lc  
if (data[j] < data[lowIndex]) { 2v:]tj  
lowIndex = j; P i=+/}  
} ;$HftG>B  
} x-XD.qh7Hr  
SortUtil.swap(data,i,lowIndex); Z~GL5]S  
} -7SAK1c$  
} 1eA7>$w}[  
QemyCCP+  
} j*d yp  
:{{F *FM;  
Shell排序: 97Lte5c6r  
rr/B= O7  
package org.rut.util.algorithm.support; XWn VgY s  
N1}c9}  
import org.rut.util.algorithm.SortUtil; MlcR"gl*  
{vs uPY  
/** |U~<3.:m:  
* @author treeroot ht|z<XJ  
* @since 2006-2-2 T=<@]$?  
* @version 1.0 w!#tTyk`  
*/ (XVw"m/ye  
public class ShellSort implements SortUtil.Sort{ oL-]3TY~  
Y=%tn8<  
/* (non-Javadoc) `Nv=B1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [2>yYr s_=  
*/ U] ~$g}!)  
public void sort(int[] data) { (DJ"WG  
for(int i=data.length/2;i>2;i/=2){ C,wL0Yj[  
for(int j=0;j insertSort(data,j,i); o\BOL3H  
} `CBZhI%%  
} "/yC@VC>  
insertSort(data,0,1); !1rlN8w(qr  
} ,k.3|aZE  
B{/R: Hm  
/** 8Pfb~&X^Ws  
* @param data Y5f1lUT  
* @param j Q}`0W[a ~  
* @param i @>u}eB>Kn  
*/ LuNc, n%  
private void insertSort(int[] data, int start, int inc) { ~Io7]  
int temp; j_/>A=OD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5c9^-|-T  
} '>NCMB{*  
} 7jxslI&F  
} bW$,?8(  
)}g(b=  
} *RDn0d[  
H  >j  
快速排序: +j#+8Ze  
u&^b~# T  
package org.rut.util.algorithm.support; UG'Q]S#!  
{mm)ay|M  
import org.rut.util.algorithm.SortUtil; Bz^jw>1b  
5:\},n+VE  
/** \<.+rqa!  
* @author treeroot 63^O|y\W8  
* @since 2006-2-2 VQ"hUX8  
* @version 1.0 8H;t_B  
*/ .@2m07*1  
public class QuickSort implements SortUtil.Sort{ v;BV@E0}x  
d.3E[AJa(  
/* (non-Javadoc) ;i8g41qjF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k\wW##=v  
*/ "76 ]u)  
public void sort(int[] data) { <W|3\p6  
quickSort(data,0,data.length-1); %u?>#  
} <S\jpB  
private void quickSort(int[] data,int i,int j){ 8N!b>??  
int pivotIndex=(i+j)/2; -mAUo;O  
file://swap Q8C_9r/:N>  
SortUtil.swap(data,pivotIndex,j); SlgN&{ Bk  
l-fi%Z7C  
int k=partition(data,i-1,j,data[j]); 5k!g%sZ  
SortUtil.swap(data,k,j); * ;-*x6  
if((k-i)>1) quickSort(data,i,k-1); 1uG"f<TsR  
if((j-k)>1) quickSort(data,k+1,j); "&%I)e^  
;>#wU'  
} < nXL  
/** ht7l- AK  
* @param data 1Y/s%L  
* @param i +vvv[  
* @param j XO`0>^g  
* @return s&A} h  
*/ 0f~C#/[t7  
private int partition(int[] data, int l, int r,int pivot) { %9w::hav  
do{ Vdtry @Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O|\J}rm'  
SortUtil.swap(data,l,r); 2gc/3*F8  
} U(a#@K !H  
while(l SortUtil.swap(data,l,r); RzxNbeki[W  
return l; hq%?=2'9?  
} a,xycX:U  
ks"|}9\%<  
} Z&#('Z  
io _1Y]N  
改进后的快速排序: $g/SWq  
.}&` TU  
package org.rut.util.algorithm.support; } uO);k5H  
Vc_'hz]Z  
import org.rut.util.algorithm.SortUtil; T~--92[  
XJ;D=~  
/** 1s%#$ 7  
* @author treeroot {K <iih  
* @since 2006-2-2 ?!;7:VIE  
* @version 1.0 AB=daie  
*/ ;L cVr13J/  
public class ImprovedQuickSort implements SortUtil.Sort { +s(HOq)b  
&]8P1{  
private static int MAX_STACK_SIZE=4096; 4 K!JQ|9  
private static int THRESHOLD=10; r) HHwh{9  
/* (non-Javadoc) !LggIk1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ./,/y"x  
*/ lm!.W5-l  
public void sort(int[] data) { mZk]l5Lc  
int[] stack=new int[MAX_STACK_SIZE]; ,ek_R)&[o  
4~y(`\0?4  
int top=-1; tro7Di2Q  
int pivot; ?h.wK  
int pivotIndex,l,r; M%Ji0v38  
G]D+Sl4<7i  
stack[++top]=0; 2-7IJ\  
stack[++top]=data.length-1; yGWxpzmRS  
@*OZx9  
while(top>0){ @<&5J7fb  
int j=stack[top--]; j2ve^F:Q  
int i=stack[top--]; u2[ iMd  
rQk<90Ar  
pivotIndex=(i+j)/2; *;1,5L  
pivot=data[pivotIndex]; ozAS[B6  
O]lSWEe  
SortUtil.swap(data,pivotIndex,j); e91aK  
%JXE5l+pJ  
file://partition Y'yH;M z  
l=i-1; DKne'3pH  
r=j; TFH\K{DM  
do{ q-.,nMUF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SNfr"2c'h~  
SortUtil.swap(data,l,r); Px$/ _`H  
} ?,p;O  
while(l SortUtil.swap(data,l,r); +,2:g}5  
SortUtil.swap(data,l,j); )T';qm0w  
RM K"o?  
if((l-i)>THRESHOLD){ 2HpHxVJ  
stack[++top]=i; vk+VP 1D  
stack[++top]=l-1; ' qWALu  
} a d.3A{  
if((j-l)>THRESHOLD){ .P;*Dws  
stack[++top]=l+1; KB%"bqB|  
stack[++top]=j; uv=.2U46  
} } E0,z  
iTFdN}U  
} )0ea+ ib  
file://new InsertSort().sort(data); ;gBRCZ  
insertSort(data); 0*rQ3Z  
} .$Ik`[+Z  
/** (&}i`}v_  
* @param data \]&#%6|V  
*/ qDv93  
private void insertSort(int[] data) { )>.&N[v  
int temp; sArhZ[H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y<mej][  
} s>0't  
} T,]7ICF#  
} j/>$,   
$>GgB`  
} d{XO/YQw  
|(pRaiJ  
归并排序: %ZNI:Uh  
XM1WfjE\  
package org.rut.util.algorithm.support; 2@9Tfm(=  
dls ss\c^M  
import org.rut.util.algorithm.SortUtil; J/\V%~ 1F  
JQ,1D`?.a  
/** nN*w~f"  
* @author treeroot }2(,K[?  
* @since 2006-2-2 JQV%fTHS  
* @version 1.0 LA@w:Fg  
*/ "]z-: \ V  
public class MergeSort implements SortUtil.Sort{ <%maDM^_\(  
F{EnOr`,m=  
/* (non-Javadoc)  TR<<+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k%D+Y(WGz8  
*/ ,=tD8@a<  
public void sort(int[] data) { |p><'Q% *  
int[] temp=new int[data.length]; dik:4;  
mergeSort(data,temp,0,data.length-1); @n(Z$)8tR  
} dE:+k/  
Pdt6nzfr  
private void mergeSort(int[] data,int[] temp,int l,int r){ ZkAU17f  
int mid=(l+r)/2; D[^m{ 9_  
if(l==r) return ; U4gF(Q  
mergeSort(data,temp,l,mid); '@p['#\uI  
mergeSort(data,temp,mid+1,r); v'VD0+3[H  
for(int i=l;i<=r;i++){ \<y`!"c  
temp=data; !OBEM1~ 1  
} q0$ !y!~  
int i1=l; ,17hGKM  
int i2=mid+1; V>R8GSx  
for(int cur=l;cur<=r;cur++){ [* @5\NWR}  
if(i1==mid+1) ;k7xMZs  
data[cur]=temp[i2++]; NXNY"r7~  
else if(i2>r) ^zt-HDBR_  
data[cur]=temp[i1++]; ;cPy1  
else if(temp[i1] data[cur]=temp[i1++]; >)spqu]  
else !OA]s%u  
data[cur]=temp[i2++]; }&n<uUDH  
} BB~OqZIP  
} "Jt.lL ]5  
4zJtOK?r"  
} f2^r[kPX"  
wtc!>  
改进后的归并排序: e '2F#  
v=_6XF  
package org.rut.util.algorithm.support; Ytz)d/3T  
bty/  
import org.rut.util.algorithm.SortUtil; #bl6sa{E  
#;%JT   
/** kMtwiB|7j  
* @author treeroot F'B8v 3  
* @since 2006-2-2 J]&y$?C  
* @version 1.0 4F{)i  
*/ LM7$}#$R  
public class ImprovedMergeSort implements SortUtil.Sort { `FYv3w2  
}z\_;\7  
private static final int THRESHOLD = 10; 9T |IvQK8  
qW!]co  
/* s<oNE)xe  
* (non-Javadoc) 1_\;- !t  
* J.ck~;3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % !du,2  
*/ 6ek;8dL  
public void sort(int[] data) { Y}uCP1v  
int[] temp=new int[data.length]; TiYnc3Bz}J  
mergeSort(data,temp,0,data.length-1); $% 1vW=d  
} <Wp QbQM  
0KGY\,ae:;  
private void mergeSort(int[] data, int[] temp, int l, int r) { (N&lHLy  
int i, j, k; Xlb0/T<g!  
int mid = (l + r) / 2; .Fnwm}  
if (l == r) UEozAY  
return; yqi^>Ce0  
if ((mid - l) >= THRESHOLD) "FTfk  
mergeSort(data, temp, l, mid); f. FYR|%tq  
else SE),":aY  
insertSort(data, l, mid - l + 1); ``OD.aY^s  
if ((r - mid) > THRESHOLD) 'bo~%WA]n  
mergeSort(data, temp, mid + 1, r); VUhbD  
else SQqD:{#g"  
insertSort(data, mid + 1, r - mid); L{(QpgHZ  
#B:hPZM1  
for (i = l; i <= mid; i++) { \ gLHi~  
temp = data; |b*? qf  
} ^4,a8`  
for (j = 1; j <= r - mid; j++) { Sqo : -  
temp[r - j + 1] = data[j + mid]; tI7:5Cm  
} G3rj`Sg^c  
int a = temp[l]; JaK}|  
int b = temp[r]; ,t`Kv1  
for (i = l, j = r, k = l; k <= r; k++) { 0#ClWynjRO  
if (a < b) { Eh|]i;G%  
data[k] = temp[i++]; G.( mp<-  
a = temp; |37 g ~  
} else { K91)qI;BD  
data[k] = temp[j--]; w9o^s5n  
b = temp[j]; e_/b2"{  
} j{NNSi3  
} /Wy.>YC|  
} u%/goxA  
#*TEq  
/** `;>= '"O!\  
* @param data s 1e:v+B]  
* @param l RLSc+kDH_  
* @param i BRk0CLr5  
*/ l'\pk<V  
private void insertSort(int[] data, int start, int len) { lKlU-4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PSPmO'C+  
} wlEdt1G  
} * 1Od-3  
} D5:{fWVsV/  
} 7}vg.hmZ  
@DZB9DDR  
堆排序: L3n_ 5|  
*&d<yJM`b  
package org.rut.util.algorithm.support; (ZY@$''  
V^\8BVw  
import org.rut.util.algorithm.SortUtil; [-)r5Dsdq  
i} N8(B(  
/** 40|,*wi  
* @author treeroot 1}tbH[  
* @since 2006-2-2 om]4BRe  
* @version 1.0 <0S,Q+&  
*/ SF5@Vg  
public class HeapSort implements SortUtil.Sort{ i:Zm*+Gi  
$2u 'N:o  
/* (non-Javadoc) +e-G,%>9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JqMDqPIQ  
*/ %zSuK8kxV  
public void sort(int[] data) { fwBRWr9  
MaxHeap h=new MaxHeap();  OX"j#  
h.init(data); ;\[(- )f!=  
for(int i=0;i h.remove(); y| Ir._bt  
System.arraycopy(h.queue,1,data,0,data.length); 1c;6xc,ub  
} #'q<v"w  
lRv eHB&V  
private static class MaxHeap{ g7&9"  
E=cwq"  
void init(int[] data){ ;s~X  
this.queue=new int[data.length+1];  :<Fe  
for(int i=0;i queue[++size]=data; =L C:SFzF  
fixUp(size); 5* 0y7K/D  
} M4d47<'*~  
} {U84 _Pi  
U-:ieao@  
private int size=0; )x]3Zq  
4T?h  
private int[] queue; gl]E_%tH  
|=EZ1<KzD  
public int get() { {O+Kw<d  
return queue[1]; JMVNmq&0  
} NHl|x4Zpw  
=b[_@zq]  
public void remove() { l27\diKPJ  
SortUtil.swap(queue,1,size--); TuW/N L|  
fixDown(1); z Nl ,  
} J!5v~<v?-  
file://fixdown ) /v6l  
private void fixDown(int k) { >y}M.Mm  
int j; %eJGt e-  
while ((j = k << 1) <= size) { CT\;xt,S  
if (j < size %26amp;%26amp; queue[j] j++; ]IL;`>Gp  
if (queue[k]>queue[j]) file://不用交换 7^M9qTEHp  
break; /l{ &iLz[  
SortUtil.swap(queue,j,k); m~>Y{F2  
k = j; 3 E3qd'  
} _$p$")  
} 3( ]M{4j  
private void fixUp(int k) { r@{~ 5&L  
while (k > 1) { ^+ wD43  
int j = k >> 1; A"aV'~>  
if (queue[j]>queue[k]) Dk='+\  
break; sO5?aB&  
SortUtil.swap(queue,j,k); J -ePE7i  
k = j; o=RM-tR`v  
} T2D<UhP  
} w ~ dk#=  
.)+h H y  
} ZlHDi!T  
0Hs|*:Y1D  
} n3lE, b  
[lk'xzE  
SortUtil: "7 v-` i  
ZbT/$\0(6  
package org.rut.util.algorithm; KE1ao9H8wR  
zh $}~RG[  
import org.rut.util.algorithm.support.BubbleSort; l?iSxqdT  
import org.rut.util.algorithm.support.HeapSort; \@>b;4Fb+N  
import org.rut.util.algorithm.support.ImprovedMergeSort; a"av#Y  
import org.rut.util.algorithm.support.ImprovedQuickSort; i_kE^SSgm  
import org.rut.util.algorithm.support.InsertSort; 0I{gJSK.,  
import org.rut.util.algorithm.support.MergeSort; xP=/N!,#  
import org.rut.util.algorithm.support.QuickSort; lKkN_ (/j  
import org.rut.util.algorithm.support.SelectionSort; $O{duJU  
import org.rut.util.algorithm.support.ShellSort; s!9dQ.  
|8bq>01~  
/** fgj^bcp-  
* @author treeroot '<R>E:5  
* @since 2006-2-2 {} Bf   
* @version 1.0 j&UMjI9[  
*/ "/]| Hhc{  
public class SortUtil { YUf1N?z  
public final static int INSERT = 1; b7/AnSR~Jt  
public final static int BUBBLE = 2; A!vCb 8(TX  
public final static int SELECTION = 3; +p8BGNW,  
public final static int SHELL = 4; W[[bV  
public final static int QUICK = 5; Fxc)}i`   
public final static int IMPROVED_QUICK = 6; dDDGM:]  
public final static int MERGE = 7; kF;5L)o  
public final static int IMPROVED_MERGE = 8; hfcIvs/!  
public final static int HEAP = 9; t |W)   
-B$~`2-  
public static void sort(int[] data) { u4"SH(  
sort(data, IMPROVED_QUICK); Uu7dSU  
} n}mR~YqD  
private static String[] name={ za'6Y*CGgX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hCYQGx0  
}; E(Rh#+]Y5  
=&dW(uyzY  
private static Sort[] impl=new Sort[]{ 7DKz;o  
new InsertSort(), )s9',4$eK<  
new BubbleSort(), $DBGLmw  
new SelectionSort(), @FN*TJ  
new ShellSort(), `O^G5 0  
new QuickSort(), |BZDhd9<{  
new ImprovedQuickSort(), WS2os Bc  
new MergeSort(), ^Cv^yTj;&  
new ImprovedMergeSort(), ]l~V&#i_c  
new HeapSort() Sb".]>^  
}; !TAp+b  
XI Jlc~2  
public static String toString(int algorithm){ /Jf~25F  
return name[algorithm-1]; ,&HR(jTo  
} OOBhbpg!D  
Zc"B0_&?:7  
public static void sort(int[] data, int algorithm) { Q/I)V2a1i  
impl[algorithm-1].sort(data); nH !3(X*  
} $XBAZ<"hd  
}%TSGC4{  
public static interface Sort { Z.i{i^/#(  
public void sort(int[] data); %b?$@H-Re  
} ^")F7`PF  
r,(e t  
public static void swap(int[] data, int i, int j) { nsb4S {  
int temp = data; QO{y/{  
data = data[j]; `A/j1UWJ  
data[j] = temp; wzjU,Mw e  
} /cFzotr"9  
} Fk=}iB#(  
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