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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。 # X`t~Y'  
插入排序: bCL/"OB  
3"O&IY<  
package org.rut.util.algorithm.support; L}M%z9K` h  
fuQk}OW{  
import org.rut.util.algorithm.SortUtil; Hq;*T3E  
/** UrRYK-g  
* @author treeroot h7a/]~  
* @since 2006-2-2 w =2; QJ<  
* @version 1.0 ;Zt N9l  
*/ fG_<HJS(~  
public class InsertSort implements SortUtil.Sort{ ?l>Ra0  
D_)N!,i  
/* (non-Javadoc) !(8) '<t9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IDK~ (t  
*/ #Y%(CI  
public void sort(int[] data) { ?[!_f$50]P  
int temp; y)K!l :X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -SlAt$IJ  
} o#\c:D*k  
} %u!)1oOIz  
} LF X[v   
1/tyne=m  
} UpSa7F:Uw  
9'Cu9nR  
冒泡排序: *ORa@ x  
L}UrI&]V$:  
package org.rut.util.algorithm.support; ]MmFtdvE  
Q>g-xe 1  
import org.rut.util.algorithm.SortUtil; <0btwsv}  
dthtWnB@  
/** 044Q>Qz,  
* @author treeroot :2*0Jh3_  
* @since 2006-2-2 @>q4hYF  
* @version 1.0 -_^#7]  
*/ b`fWT:?=  
public class BubbleSort implements SortUtil.Sort{ ys- w0H  
"BA&  
/* (non-Javadoc) 9WT{~PGj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4N"|u|   
*/ OIY  
public void sort(int[] data) { gHox>r6.A  
int temp; cXIuGvE&=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ f#&@Vl(i&  
if(data[j] SortUtil.swap(data,j,j-1); E^C [G)7n  
} `1i\8s&O6@  
} ?`3G5at)9f  
} _+ERX[i  
} #}+_Hy  
'byao03  
} *]>~lO1  
:4x&B^,53  
选择排序: MZ%S3'  
%4x,^ K]  
package org.rut.util.algorithm.support; Ij?Qs{V  
l9+)h }  
import org.rut.util.algorithm.SortUtil; X&gXhr#dL\  
tpQ8 m(  
/** |[iEi  
* @author treeroot }*|aVBvU  
* @since 2006-2-2 ZK`x(h{p)  
* @version 1.0 )&[Zw{6P  
*/ wpf  
public class SelectionSort implements SortUtil.Sort { \=j|ju3  
#&Fd16ov  
/* T~naAP  
* (non-Javadoc) :Tdl84   
* ,!bcm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) asL!@YE  
*/ >a)6GZ@  
public void sort(int[] data) { JpZ3T~Wrf  
int temp; 0IxHB|^$  
for (int i = 0; i < data.length; i++) { l'RuzBQr  
int lowIndex = i; SD.c 9  
for (int j = data.length - 1; j > i; j--) { K_}81|=  
if (data[j] < data[lowIndex]) { ^:2>I$  
lowIndex = j; b4CXif  
} /rnP/X)T  
} R_duPaWc@  
SortUtil.swap(data,i,lowIndex); fO}Y$y\q  
} k8w:8*y'.  
} _Kv;hR>  
IF kU8EK&B  
} I@uin|X  
,A9{x\1!  
Shell排序: cHUj6'neO  
Tl S 904'  
package org.rut.util.algorithm.support; N#8$pE  
eo<=Q|nI&  
import org.rut.util.algorithm.SortUtil; GC)xQZU)s  
P`y 0FKS  
/** *]e 9/f  
* @author treeroot `r+`vJ$  
* @since 2006-2-2 ]64?S0p1c!  
* @version 1.0 p;rT#R&6>  
*/ EoOwu-{  
public class ShellSort implements SortUtil.Sort{ 24I~{Qy  
yG:Pg MrB  
/* (non-Javadoc) "FXT8Qxg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r(Y@;  
*/ k7=mxXF  
public void sort(int[] data) { 3M[5_OK   
for(int i=data.length/2;i>2;i/=2){ ePY69!pO5e  
for(int j=0;j insertSort(data,j,i); ol@LLT_m  
} dUP8[y  
} RQW<Sp~  
insertSort(data,0,1); YA@OA$`E  
} 6@J)k V  
$jN,] N~  
/** F17nWvF  
* @param data 0[!38  
* @param j A{ Ejk|  
* @param i \"Aw ATQ  
*/ K2ry@haN  
private void insertSort(int[] data, int start, int inc) { J}s)#va9R  
int temp; r8vF I6J  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H:`[$ ^  
} so }Kb3n  
} X-J<gI(Y  
} "hXB_73)V  
usOIbrQ  
} ]y<<zQ_fhY  
-{a&Zkz>V  
快速排序: &g5+ |g (  
r?wE;gH  
package org.rut.util.algorithm.support; P[a\Q`}L  
2Ls  
import org.rut.util.algorithm.SortUtil; C]DvoJmBs  
c!=^C/5Ee  
/** \&5t@sC  
* @author treeroot Avi8&@ya  
* @since 2006-2-2 I:,D:00+  
* @version 1.0 kV3Zt@+  
*/ ee{8C~  
public class QuickSort implements SortUtil.Sort{ \k)(:[^FY  
|csR"DOqz  
/* (non-Javadoc) 9Sk?tl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -<.b3Mh  
*/ mqb6MnK -  
public void sort(int[] data) { pTk1iGfB  
quickSort(data,0,data.length-1); :{KoZd  
} {;XO'  
private void quickSort(int[] data,int i,int j){ )gP0+W!u  
int pivotIndex=(i+j)/2; ^PI8Bvs>j  
file://swap Hm55R  
SortUtil.swap(data,pivotIndex,j); [G[|auKF  
XhxCOpO  
int k=partition(data,i-1,j,data[j]); >6"u{Qmr  
SortUtil.swap(data,k,j); q$ 6Tb  
if((k-i)>1) quickSort(data,i,k-1); -P|st;?#  
if((j-k)>1) quickSort(data,k+1,j); WZJ}HHePr  
I:G4i}mA  
} L/n?1'he  
/** 2^C>orKQ0  
* @param data `+O7IyTM A  
* @param i q+Cq&|4 ?2  
* @param j %#,EqN  
* @return }0?\H)/edP  
*/ L.) 0!1  
private int partition(int[] data, int l, int r,int pivot) { +$H`/^a.  
do{ J)leRR&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ',P E25Z  
SortUtil.swap(data,l,r); &?gvW//L2  
} 9 WhZ= Xk  
while(l SortUtil.swap(data,l,r);  ]7yr.4?a  
return l; }Pn]j7u!  
} ,wE cRN w  
JM-+p  
} Yx{qVU  
(5(TbyWwD  
改进后的快速排序: 9akIu.H  
_r&,n\ T  
package org.rut.util.algorithm.support; !*@sX7H  
xf]_@T;  
import org.rut.util.algorithm.SortUtil; D<d4"*qo  
O#962\  
/** y}t1r |p  
* @author treeroot oWo/QNw9  
* @since 2006-2-2 &KS*rHgt?  
* @version 1.0 H~Fb=.h]U  
*/ kKP<K+hH  
public class ImprovedQuickSort implements SortUtil.Sort { 5x:dhkW  
5g(`U+ ,*(  
private static int MAX_STACK_SIZE=4096; &?xZ Hr`  
private static int THRESHOLD=10; >l3iAy!sZ  
/* (non-Javadoc) j6_tFJT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QZs ]'*=#  
*/ aEW sru  
public void sort(int[] data) { 5p7?e3  
int[] stack=new int[MAX_STACK_SIZE]; }hy, }2(8  
 F6\Hqv  
int top=-1; e7^B3FOx  
int pivot; X|w[:[P  
int pivotIndex,l,r; qu:nV"~_  
^E^Cj;od@  
stack[++top]=0; 2)zAX"#/  
stack[++top]=data.length-1; n$oHr  
9Oe~e  
while(top>0){ q/lQEfR  
int j=stack[top--]; ?' :v): J}  
int i=stack[top--]; "$Mz>]3&q  
jJK`+J,i}X  
pivotIndex=(i+j)/2; iYk4=l  
pivot=data[pivotIndex]; 6,q}1-  
FbWcq_  
SortUtil.swap(data,pivotIndex,j); JgmX=6N  
~DYv6-p%  
file://partition KtO|14R:  
l=i-1; (L3Etan4RE  
r=j; c?0.>^,B Q  
do{ o'SZ sG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5v`[c+@F  
SortUtil.swap(data,l,r); (:P-ef$]C  
} -FGQn |h4  
while(l SortUtil.swap(data,l,r); n+XLZf#  
SortUtil.swap(data,l,j); _vV3A3|Ec,  
Qmg2lP.)  
if((l-i)>THRESHOLD){ ^f%hhpV@  
stack[++top]=i; BHZCM^  
stack[++top]=l-1; zY=eeG+4s  
} vk&6L%_~a  
if((j-l)>THRESHOLD){ ^I CSs]}1  
stack[++top]=l+1; +'VSD`BR  
stack[++top]=j; -0>gq$/N=^  
} +338z<'Z!  
4{rqGC /  
} JE<w7:R&  
file://new InsertSort().sort(data); Sbp].3^j  
insertSort(data); W:gpcR]>  
} CVy\']  
/** nde_%d$  
* @param data .*Mp+Q}^  
*/ ~stJO])a  
private void insertSort(int[] data) { <Cbi5DtR  
int temp; NrK.DY4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y*Ra!]62  
} ls*bCe  
} 45aUz@  
} \QvoL  
-+ha4JOB  
} ,ut-Di=6  
TF1,7Qd  
归并排序: ^tTASK  
~EL3I  
package org.rut.util.algorithm.support; MOia] 5  
rijavZS6  
import org.rut.util.algorithm.SortUtil; !K[UJQ s\  
qbsmB8rh  
/** pRys 5/&v  
* @author treeroot u$38"&cmA  
* @since 2006-2-2 {TL.2  
* @version 1.0 [(rT,31cW  
*/ ?XIB\7}  
public class MergeSort implements SortUtil.Sort{ 2Pm[ kD4E=  
)4MM>Q  
/* (non-Javadoc) *t%Z'IA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [`4  
*/ iLC.?v2=  
public void sort(int[] data) { yCvP-?2  
int[] temp=new int[data.length]; srCpgs]h  
mergeSort(data,temp,0,data.length-1); QHDR* tB:{  
} ]T:a&DHC  
yt@7l]I  
private void mergeSort(int[] data,int[] temp,int l,int r){ cTJi8f=g  
int mid=(l+r)/2; -k8<LR3  
if(l==r) return ; RH}i=  
mergeSort(data,temp,l,mid); {U'\2Ge<m  
mergeSort(data,temp,mid+1,r); $-MVsa9>I  
for(int i=l;i<=r;i++){ L~+/LV  
temp=data; \}Al85  
} ~jR4%VF  
int i1=l; /wI"oHZd  
int i2=mid+1; K2> CR$L  
for(int cur=l;cur<=r;cur++){ CBr(a'3{Z  
if(i1==mid+1) 3%[;nhbA7  
data[cur]=temp[i2++]; g2;lEW  
else if(i2>r) n "bii7h  
data[cur]=temp[i1++]; #PkZi(k hv  
else if(temp[i1] data[cur]=temp[i1++]; W=:AOBK  
else lsaA    
data[cur]=temp[i2++]; U EjP`  
} ;aN_!! r  
} 5MCnGg@  
QdrZi.qKH  
} nSv@FT'~z  
$*Kr4vh  
改进后的归并排序: Yu$QL@  
`y|_hb  
package org.rut.util.algorithm.support; >t_h/:JZ)  
"2~L  
import org.rut.util.algorithm.SortUtil; \i'Z(1  
R*=88ds  
/** FS)"MDs  
* @author treeroot 'eo/"~/*w  
* @since 2006-2-2 ; ,}Dh/&E  
* @version 1.0 [=BccT:b  
*/ ,gpZz$Ef(  
public class ImprovedMergeSort implements SortUtil.Sort { rJ)j./c  
f DwK5?  
private static final int THRESHOLD = 10; 4_`(c1oA  
UCt}\IJ  
/* /go|r '  
* (non-Javadoc) )qRH?Hsb7  
* "Ccyj/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 16ZyLt  
*/ F8S>Ld  
public void sort(int[] data) { \%|Xf[AX  
int[] temp=new int[data.length]; PjD9D.  
mergeSort(data,temp,0,data.length-1); ;1HzY\d%<  
} q6,z 1A"  
?I[*{}@n"  
private void mergeSort(int[] data, int[] temp, int l, int r) { : eCeJ~&E  
int i, j, k; Sv_Nb>  
int mid = (l + r) / 2; 0|Xz-Y  
if (l == r) f"*k>=ETI  
return; =C2KHNc  
if ((mid - l) >= THRESHOLD) iF9d?9TWl  
mergeSort(data, temp, l, mid); hvGD`  
else VsJiE0'%  
insertSort(data, l, mid - l + 1); 9Pb6Z}  
if ((r - mid) > THRESHOLD) L#",.x  
mergeSort(data, temp, mid + 1, r); 35Yf,@VO  
else nwp(% fBo  
insertSort(data, mid + 1, r - mid); gBky ZK  
.g3=L  
for (i = l; i <= mid; i++) { &7i&"TNptP  
temp = data; %q}[ZD/HD  
} /w1M%10   
for (j = 1; j <= r - mid; j++) { E.Q]X]q  
temp[r - j + 1] = data[j + mid]; 1uO2I&B  
} :KgH7s}  
int a = temp[l]; F"bz<{  
int b = temp[r]; ?j0yT@G  
for (i = l, j = r, k = l; k <= r; k++) { &s(J:P$!  
if (a < b) { =W &Mt  
data[k] = temp[i++]; V2!0),]B  
a = temp; !> =ybRe  
} else { 64mg:ed&  
data[k] = temp[j--]; *s,[Uy![  
b = temp[j]; lLp,sNAj  
} RC/45:hZZ  
} (6.uNLr  
} f~F{@),acZ  
9b/Dswxjx  
/** [}YUi>NGA  
* @param data @ 5^nrB  
* @param l -OSj<m<  
* @param i ^DN:.qQ  
*/ 8L,=Eap  
private void insertSort(int[] data, int start, int len) { %@Z;;5L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FpiTQC7d  
} b8e\(Dww  
} V"Z8-u  
} <|3%}?  
} (-g*U#   
1$8@CT^m  
堆排序: Z2gWa~dBC  
{nbT$3=Zt  
package org.rut.util.algorithm.support; <)p.GAZ  
Lo~ ;pvv  
import org.rut.util.algorithm.SortUtil; 1_<x%>zG  
59O-"Sc[  
/** o//h|fU@  
* @author treeroot b,^Gj]7  
* @since 2006-2-2 'Y/0:)  
* @version 1.0  kDE-GX"Y  
*/ i1|>JM[V  
public class HeapSort implements SortUtil.Sort{ dYwkP^KB  
S~i9~jA  
/* (non-Javadoc) 0muC4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B ytx.[zbX  
*/ Y@`uBB[  
public void sort(int[] data) { U fyhd  
MaxHeap h=new MaxHeap(); 6,A|9UX=`  
h.init(data); d?8OY  
for(int i=0;i h.remove(); *m}8L%<HT  
System.arraycopy(h.queue,1,data,0,data.length); X>Vc4n<}  
} =w! ik9  
~x^y5[5{  
private static class MaxHeap{ Wk<fNHg  
u0h%4f!X  
void init(int[] data){ w.-x2Zg},  
this.queue=new int[data.length+1]; _"ciHYHBQ  
for(int i=0;i queue[++size]=data; cv aG[NF  
fixUp(size); l[Z o,4*  
} A<ds+0  
} uYMn VE"  
Xj 1Oxm 42  
private int size=0; :YI5O/gsk?  
=3 .dgtH  
private int[] queue; wX0D^ )NtF  
kU[hB1D5  
public int get() { F#gA2VCm  
return queue[1]; l!f_ +lv  
} q1T)H2S  
lN#j%0MaUo  
public void remove() { {5~h   
SortUtil.swap(queue,1,size--); F(yR\)!C  
fixDown(1); 68XJ`/d  
} c|k_[8L  
file://fixdown Cgx:6TRS  
private void fixDown(int k) { k1<^Ept  
int j; `Pvi+:6\Y  
while ((j = k << 1) <= size) { 8f9wUPr  
if (j < size %26amp;%26amp; queue[j] j++; Hw o _;fV  
if (queue[k]>queue[j]) file://不用交换 LUbj^iQ9  
break; DjM*U52Yfj  
SortUtil.swap(queue,j,k); sfyLG3$/  
k = j; NX& dJ 6a  
} He(65ciT<O  
} Jy)=TJ!y  
private void fixUp(int k) { w'K7$F51  
while (k > 1) { CefFUqo4  
int j = k >> 1; TQ]gvi |m  
if (queue[j]>queue[k]) +@QrGY  
break; (oG YnN,2  
SortUtil.swap(queue,j,k); }PBme'kP  
k = j; ENZym  
} c!ZZMC s  
} k( :Bl  
rLsY_7!  
} E`o_R=%  
/_0B5 ,6R  
} ,`}y J*7  
pUHgjwT'U  
SortUtil: "E\vdhk  
,~Mf2Y#m0p  
package org.rut.util.algorithm; %J M$]  
zMv`<m%  
import org.rut.util.algorithm.support.BubbleSort; -D~K9u]U_  
import org.rut.util.algorithm.support.HeapSort; VcrMlcnO  
import org.rut.util.algorithm.support.ImprovedMergeSort; @Chl>s  
import org.rut.util.algorithm.support.ImprovedQuickSort; $|=| "/  
import org.rut.util.algorithm.support.InsertSort; &<N8d(  
import org.rut.util.algorithm.support.MergeSort; zR<{z  
import org.rut.util.algorithm.support.QuickSort; )#m{"rk[x,  
import org.rut.util.algorithm.support.SelectionSort; |M;Nq@bRv  
import org.rut.util.algorithm.support.ShellSort; gw)4P tb!  
,D;8~l lM  
/** \}$|Uo$O  
* @author treeroot dPEDsG0$a  
* @since 2006-2-2 ^3dc#5]Xf  
* @version 1.0 I{89chi  
*/ q`1tUd4G  
public class SortUtil { #kv9$  
public final static int INSERT = 1; 8g0 #WV  
public final static int BUBBLE = 2; nK;d\DO  
public final static int SELECTION = 3; y|| n9  
public final static int SHELL = 4; 9i\RdJv.  
public final static int QUICK = 5; 6\.g,>   
public final static int IMPROVED_QUICK = 6; kH eD(Ea  
public final static int MERGE = 7; j2D!=PK;  
public final static int IMPROVED_MERGE = 8; I6^y` 2X  
public final static int HEAP = 9; /(^-= pAX  
4;6"I2;zfG  
public static void sort(int[] data) { =3035{\  
sort(data, IMPROVED_QUICK); PaaMh[OmG  
} B~I ]3f  
private static String[] name={ E{T3Xwg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |KhpF1/(  
}; {'{}@CuA2  
hoFgs9  
private static Sort[] impl=new Sort[]{ jA1S|gV  
new InsertSort(), xRWfZ3E#  
new BubbleSort(), o DZZ  
new SelectionSort(), TB>_#+:  
new ShellSort(), aH"d~Y^  
new QuickSort(), #`_W?-%^  
new ImprovedQuickSort(), K6->{!8]k  
new MergeSort(), ]V/5<O1  
new ImprovedMergeSort(), 8XH;<z<oJ  
new HeapSort() E:9RskI  
}; DghyE`  
>&.N_,*  
public static String toString(int algorithm){ w~+*Vd~U  
return name[algorithm-1]; D+!T5)>(  
} K}cZK  
&>c=/]Lop  
public static void sort(int[] data, int algorithm) { 7**zb"#y  
impl[algorithm-1].sort(data); j0L%jz  
} &b@_ah+f  
K>'4^W5d,  
public static interface Sort { xQZOGq  
public void sort(int[] data); %1{S{FB  
} lz`\Q6rZ  
&- p(3$jn7  
public static void swap(int[] data, int i, int j) { ~~{lIO)&  
int temp = data; |KJGM1]G  
data = data[j]; r3Ol?p  
data[j] = temp; YHN6/k7H  
} f4S}Nga(  
} oT}$N_gFT  
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