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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。 zL+t&P[\  
插入排序: $dI mA  
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package org.rut.util.algorithm.support; CQ6I4k  
Co(N8>1  
import org.rut.util.algorithm.SortUtil; Wm-$l  
/** %D#&RS  
* @author treeroot ["&{^  
* @since 2006-2-2 }Em{?Hqy  
* @version 1.0 00i MU  
*/ H:hM(m0?q  
public class InsertSort implements SortUtil.Sort{ D mi.@.  
Z HZxr  
/* (non-Javadoc) qVfn(rZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HM)D/CO,?  
*/ |z3!3?%R  
public void sort(int[] data) { ,|yscp8  
int temp; D ON.)F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E@k'uyIu  
} `!N}u  
} ? Pi|`W   
} 5%9Uh'y#  
VS ECD;u4c  
} uZL,%pF3A  
.up[wt gN  
冒泡排序: U'F}k0h?\'  
Ek `bPQ5  
package org.rut.util.algorithm.support;  .GJbrz  
ly34aD/p~,  
import org.rut.util.algorithm.SortUtil; q 6UZ`9&z  
bl>W i@GL  
/** TE o  
* @author treeroot E-Xz  
* @since 2006-2-2 9[VYd '  
* @version 1.0 XZ.D<T"  
*/ iP9]b&  
public class BubbleSort implements SortUtil.Sort{ XYP RMa?  
iT{4-j7|P4  
/* (non-Javadoc) `. JW_F)1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j~\FDcG*ed  
*/ H?;+C/-K`_  
public void sort(int[] data) { .?3ro Q  
int temp; x*F- d2D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4rL`||  
if(data[j] SortUtil.swap(data,j,j-1); /q>ExXsEC  
} bf.+Ewb(  
} ,8Q0AkG  
} QChWy`x  
} 9*FA=E  
)vOBF5  
} %fS1g Sf h  
<Ez@cZ"  
选择排序: 0$`pYW]  
] +%`WCr9  
package org.rut.util.algorithm.support; z6M5 '$\y  
Y1r'\@L w  
import org.rut.util.algorithm.SortUtil; vA:ZR=)F  
9A4n8,&sm  
/** v `/nX->  
* @author treeroot cu?6\@cD  
* @since 2006-2-2 *>qc6d@'  
* @version 1.0 Z ;~%!  
*/ viU}  
public class SelectionSort implements SortUtil.Sort { B=>Xr!pM!  
BTr;F]W  
/* 1yF9zKs&_  
* (non-Javadoc) Y9f7~w^s  
* -eV*I >G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R?lTB3"  
*/ ']2d^'TH  
public void sort(int[] data) { ) C~#W  
int temp;  Rh6CV  
for (int i = 0; i < data.length; i++) { : ^}!"4{  
int lowIndex = i; Y{e,I-"{  
for (int j = data.length - 1; j > i; j--) { kb~ s, @p  
if (data[j] < data[lowIndex]) { YY tVp_)  
lowIndex = j; Y'P^]Q=}_#  
} k~<Ozx^AyY  
} e^\(bp+83  
SortUtil.swap(data,i,lowIndex); ]6v7iuvI  
} x v$fw>  
} @(=?x:j  
qOpwl*?x+  
} 3`SH-"{j%  
%jj-\Gz!  
Shell排序: }Tm+gJA  
+K'YVB U}  
package org.rut.util.algorithm.support; (L4C1h_]9  
?$A)lWk(  
import org.rut.util.algorithm.SortUtil; S`mB1(h  
7`L]aRS[  
/** d <ES  
* @author treeroot <<qzZ+u  
* @since 2006-2-2 =HMCNl  
* @version 1.0 o\W>$$EXD  
*/ 3VMaD@nYa  
public class ShellSort implements SortUtil.Sort{ _]'kw [  
~yXDN4s  
/* (non-Javadoc) R=R]0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S]fkA6v  
*/ }3Ke  
public void sort(int[] data) { VrT-6r'Y  
for(int i=data.length/2;i>2;i/=2){ U%1M?vT/  
for(int j=0;j insertSort(data,j,i); $ta"Ug.z  
} q2B'R   
} w H=7pS"s  
insertSort(data,0,1); QrSO%Rm1*  
} A;ZluQ  
K( MZ!>{  
/** $M-"az]  
* @param data rFC9y o  
* @param j .u7grC C  
* @param i v%`k*n':  
*/ G^<m0ew|  
private void insertSort(int[] data, int start, int inc) { 4s>L]! W$8  
int temp; *}HDq(/>w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j1Sjw6}GCH  
} w"M!**bP  
} %y>*9$<pXe  
} 'dQGb-<_<  
#>CWee;  
} rjfWty%6pX  
.{;RJ:O  
快速排序: >PdrLwKS  
^Bw"+6d  
package org.rut.util.algorithm.support; )<'2 vpz  
2" v{  
import org.rut.util.algorithm.SortUtil; IwbV+mWQ  
33}p02#  
/** 2}P{7flDY  
* @author treeroot ~|{e"!(}  
* @since 2006-2-2 g p|G q  
* @version 1.0 V.Lk70 \  
*/ @Py'SH!-  
public class QuickSort implements SortUtil.Sort{ =VWH8w.3  
YyYp-0#  
/* (non-Javadoc) l'!_km0{d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %dmQmO,  
*/ I L&PN`#  
public void sort(int[] data) { <dS I"C<  
quickSort(data,0,data.length-1); ij?]fXf:)y  
} QRdtr  
private void quickSort(int[] data,int i,int j){ _iqaKYT$  
int pivotIndex=(i+j)/2; A5}N[|z  
file://swap ==KDr 0|G  
SortUtil.swap(data,pivotIndex,j); ;L],i<F  
Y?oeP^V'u  
int k=partition(data,i-1,j,data[j]); 2I=4l  
SortUtil.swap(data,k,j); ms&5Bq+9  
if((k-i)>1) quickSort(data,i,k-1); KxJDAP  
if((j-k)>1) quickSort(data,k+1,j); |a0@4 :  
WT 5 2  
} tC+1 1M  
/** rP(;^8l"  
* @param data 6lr<{k7Nw  
* @param i 6: R1jF*eG  
* @param j r5lPO*?Df  
* @return Fkqw #s(T  
*/ Aba%QQQ  
private int partition(int[] data, int l, int r,int pivot) { yi-)4#YN  
do{ ! v%%_sRV  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +WxD=|p;  
SortUtil.swap(data,l,r); 7/=r-  
} L[+4/a!HQ  
while(l SortUtil.swap(data,l,r); (G>g0(;D-  
return l; ^m.%FIwR  
} (r.y   
/GNm>NSK  
} O+DYh=m*p  
T}'*Gry  
改进后的快速排序: d<cQYI4V  
|mw3v>  
package org.rut.util.algorithm.support; i|!R*"  
w0.;86<MV  
import org.rut.util.algorithm.SortUtil; y?*Y=,"  
7Sycy#D  
/** p{0rHu[  
* @author treeroot %NhZTmWm  
* @since 2006-2-2 0)vX  
* @version 1.0 m$'ZiS5  
*/ -OgC.6  
public class ImprovedQuickSort implements SortUtil.Sort { ]*rK;  
&x4|!" G  
private static int MAX_STACK_SIZE=4096; >bwq  
private static int THRESHOLD=10; py/#h$eY  
/* (non-Javadoc) ,G$<J0R1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %x^U3"7  
*/ *M~BN}.  
public void sort(int[] data) { \VAS<?3  
int[] stack=new int[MAX_STACK_SIZE]; 2;SiH]HNS  
0n?^I>j  
int top=-1; nG| NRp  
int pivot; |)ALJJ=+  
int pivotIndex,l,r; ge&!GO  
v?q)E%5j  
stack[++top]=0; Fy^8]u*Fu  
stack[++top]=data.length-1; f F9=zrW  
V$  MMK  
while(top>0){ Ez^wK~  
int j=stack[top--]; R{Me~L?  
int i=stack[top--]; ML1/1GK*i+  
<)oW  
pivotIndex=(i+j)/2; m8* )@e  
pivot=data[pivotIndex]; AHP;N6Y6  
n--s[Kdo8  
SortUtil.swap(data,pivotIndex,j); 7t% |s!~  
U ,\t2z  
file://partition ?ieC>cr  
l=i-1; bqZ5GKUo  
r=j; s";9G^:  
do{ Xf|I=XK  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~Y7:08  
SortUtil.swap(data,l,r); ~2 J!I^ J  
} Y c>.P  
while(l SortUtil.swap(data,l,r); 5mI}IS|@  
SortUtil.swap(data,l,j); 5&Le?-/\  
y>JSo9[@  
if((l-i)>THRESHOLD){ #<R6!"TNoz  
stack[++top]=i; @ql S #(  
stack[++top]=l-1; HUGhz  
} h}GzQry1  
if((j-l)>THRESHOLD){ Up1e4mNL  
stack[++top]=l+1; H')8p;~{}  
stack[++top]=j; I^gLiLUN*6  
} '!XVz$C  
oMb@)7  
} kfs[*ku  
file://new InsertSort().sort(data); rn-CQ2{?  
insertSort(data); 5oY^; )\/  
} K!|J/W  
/** =D^R,Q  
* @param data _VLA2#V>   
*/ !='L`.  
private void insertSort(int[] data) { AbOF/ g)C  
int temp; -pm%F8{T]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u_%L~1+'  
} G@6F<L~$1  
} {} Zqaf  
} ;v%f +  
Jw -3G3h  
} yH',vC.  
Sk%*Zo{|  
归并排序: 6F3FcUL  
t`"pn <  
package org.rut.util.algorithm.support; y9Q.TL>=[  
te#Wv9x  
import org.rut.util.algorithm.SortUtil; 0{.[#!CSk  
zXv2plw(  
/** ,-5|qko=  
* @author treeroot !s[[X5  
* @since 2006-2-2 iiTt{ab\Y  
* @version 1.0 JR4fJG  
*/ :z%q09.)  
public class MergeSort implements SortUtil.Sort{ ee .,D  
!,cfA';S  
/* (non-Javadoc) ?%i~~hfH#N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1C<@QrT  
*/ '"]U+aIg  
public void sort(int[] data) { (Ujry =f  
int[] temp=new int[data.length]; uwWKsZ4:ij  
mergeSort(data,temp,0,data.length-1); \ H!Klp  
} `:YCOF  
g3vR\?c`  
private void mergeSort(int[] data,int[] temp,int l,int r){ l !:kwF  
int mid=(l+r)/2; Z3z"c B  
if(l==r) return ; [ih^VlZ  
mergeSort(data,temp,l,mid); C;XhnqWv+l  
mergeSort(data,temp,mid+1,r); 4)E$. F^   
for(int i=l;i<=r;i++){ g,}_&+q:.M  
temp=data; }\aJ%9X02  
} <,Pk  
int i1=l; .%+y_.l  
int i2=mid+1; Q?{^8?7  
for(int cur=l;cur<=r;cur++){ &O^t]7  
if(i1==mid+1) iO{LsG*5Z  
data[cur]=temp[i2++]; } o@Dsx5  
else if(i2>r) &[y+WrGG  
data[cur]=temp[i1++]; D` 2w>{Y  
else if(temp[i1] data[cur]=temp[i1++]; fsUZG6  
else w'a3=_nW  
data[cur]=temp[i2++]; UKp^TW1^  
} 4* V[^mht  
} z--Y  
4>(rskl_  
} IQQ QB  
$9?<mP2-*  
改进后的归并排序: hf< [$B  
@5*$yi 'Cp  
package org.rut.util.algorithm.support; dc,qQM  
b-HELS`nX  
import org.rut.util.algorithm.SortUtil; WXe]Q bg  
Mk!bmFZOZ  
/** #]@|mf q  
* @author treeroot &r1]A&  
* @since 2006-2-2 O*ER3  
* @version 1.0 IRT0   
*/ n|eM}ymF+  
public class ImprovedMergeSort implements SortUtil.Sort { Nyl)B7/w  
ecyN};V>  
private static final int THRESHOLD = 10; o4nDjFhh  
:*WiswMFm  
/* w7b\?]}@  
* (non-Javadoc) WlmkM?@  
* my%MXTm2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p'\zL:3  
*/ _[$,WuG1  
public void sort(int[] data) { \"6?*L|]  
int[] temp=new int[data.length]; C!W0L`r  
mergeSort(data,temp,0,data.length-1); > - U+o.o  
} {fS~G2@1  
8QQh1q2  
private void mergeSort(int[] data, int[] temp, int l, int r) { nt$q< 57  
int i, j, k; !uqp?L^;  
int mid = (l + r) / 2; %'.3t|zH  
if (l == r) >Xw0i\G  
return; C{OkbE"Vym  
if ((mid - l) >= THRESHOLD) s%^@@Dk  
mergeSort(data, temp, l, mid); e@7UL|12  
else du_~P"[  
insertSort(data, l, mid - l + 1); N."x@mV  
if ((r - mid) > THRESHOLD) d8K|uEHVz  
mergeSort(data, temp, mid + 1, r); zV8{|-2]No  
else ~{-9qOGw;  
insertSort(data, mid + 1, r - mid); U;t1 K  
%BF,;(P  
for (i = l; i <= mid; i++) { qIvnPaYW  
temp = data; T}59m;I  
} "w3%BbIx  
for (j = 1; j <= r - mid; j++) { ]EqwDw4  
temp[r - j + 1] = data[j + mid]; ji.T7wn1u  
} 5:(/k\9+yv  
int a = temp[l]; "<&) G{  
int b = temp[r]; DcN!u6sJ  
for (i = l, j = r, k = l; k <= r; k++) { ~]SCf@pRk  
if (a < b) { /h9v'Y}c  
data[k] = temp[i++]; 4))N(m%3F  
a = temp; bD. KD)5  
} else { CZog?O}<  
data[k] = temp[j--]; b*1yvkX5  
b = temp[j]; q1Mt5O}  
} *auT_*  
} (#8B  
} z0@BBXQ`  
 C=qL0  
/** ch33+~Nn  
* @param data $ i%#fN  
* @param l {@hJPK8  
* @param i h 27f0x9  
*/ ^0&jy:{  
private void insertSort(int[] data, int start, int len) { iP6?[pl8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NuW6~PV  
} hR~&}sxN  
} \}W !  
} Z"$iB-]  
} T"1=/r$Ft  
X.ecA`0  
堆排序: pfHfw,[  
n;wViw  
package org.rut.util.algorithm.support; Q" r y@ (I  
wHh6y?g\  
import org.rut.util.algorithm.SortUtil; 8Oz9 UcG  
6Ta+f3V   
/** xxA^A  
* @author treeroot HvmE'O8  
* @since 2006-2-2 7^tYtMm|U  
* @version 1.0 YdyTt5-  
*/ WtO@Kf:3GH  
public class HeapSort implements SortUtil.Sort{ d:"7Tw2v+  
yhrjML2K  
/* (non-Javadoc) @0(%ayi2Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y?U@F/^}N  
*/ FC WF$'cO  
public void sort(int[] data) { F)4I70vG  
MaxHeap h=new MaxHeap(); n|Ts:>`V  
h.init(data); %xr'96d  
for(int i=0;i h.remove(); 6|IJwP^Q_  
System.arraycopy(h.queue,1,data,0,data.length); EP^qj j@M  
} -[}Aka,f!  
d0R;|p''Z  
private static class MaxHeap{ bM.$D-?dF*  
Rh#`AM`)j  
void init(int[] data){ oW^>J-  
this.queue=new int[data.length+1]; 5zh6l+S[  
for(int i=0;i queue[++size]=data; +s^nT{B@\  
fixUp(size); a~?B/ g&_  
} AN3oh1xe:  
} z?pi /`y8>  
8 Vf #t!t  
private int size=0; i[I&m]N  
41P0)o  
private int[] queue; s\<UDW  
2qojU%fiH  
public int get() { #%w+PL:*O  
return queue[1]; maeQ'Sv_&  
} \iaZV.#f  
 A@9\Qd  
public void remove() { c91^7@Xv  
SortUtil.swap(queue,1,size--); %|D) U>o{  
fixDown(1); Zu2`IzrG#  
} JY@bD:  
file://fixdown vG7Mk8mIr  
private void fixDown(int k) { 1rs.  
int j; ay|jq "a  
while ((j = k << 1) <= size) { <B>hvuCoH  
if (j < size %26amp;%26amp; queue[j] j++; p3Ozfk  
if (queue[k]>queue[j]) file://不用交换 -<9Qez)y  
break; {~w(pAx  
SortUtil.swap(queue,j,k); h(R7y@mp\0  
k = j; V'tR \b  
} Zb2PFwcy  
} % 8wBZ~1-  
private void fixUp(int k) { $-u c#57  
while (k > 1) { %|ClYr  
int j = k >> 1; pL!,1D!  
if (queue[j]>queue[k]) v 2 p  
break; p(nO~I2E  
SortUtil.swap(queue,j,k); TspX7<6r  
k = j;  Na@;F{  
} \o=9WKc  
} 5gV,^[E-z  
L>mM6$l  
} v9FR  
,]nRnI^  
} ''D7Bat@  
\F-n}Z  
SortUtil: 4f~sRubK  
DaJ,( DJY  
package org.rut.util.algorithm; <T;V9(66  
*C0a,G4  
import org.rut.util.algorithm.support.BubbleSort; 8EMBqhl  
import org.rut.util.algorithm.support.HeapSort; cvo+{u$s  
import org.rut.util.algorithm.support.ImprovedMergeSort; K F_Uu  
import org.rut.util.algorithm.support.ImprovedQuickSort; !L|l(<C  
import org.rut.util.algorithm.support.InsertSort; +nHr+7}  
import org.rut.util.algorithm.support.MergeSort; B8?9L8M}  
import org.rut.util.algorithm.support.QuickSort; kZo# Ny  
import org.rut.util.algorithm.support.SelectionSort; w\ 0vP  
import org.rut.util.algorithm.support.ShellSort; H }]Zp  
H C,5j)1  
/** 1h(IrV5g  
* @author treeroot oV;sd5'LG  
* @since 2006-2-2 uD?RL~M  
* @version 1.0 \At~94  
*/ .ahY 1CO  
public class SortUtil { $y,KDR7^  
public final static int INSERT = 1; QH4m7M@ni  
public final static int BUBBLE = 2; #pgD-0_  
public final static int SELECTION = 3; .P7q)lj36h  
public final static int SHELL = 4; ' `c \Dq  
public final static int QUICK = 5; _>]/.w2=  
public final static int IMPROVED_QUICK = 6; Z.!<YfA)  
public final static int MERGE = 7; 04&S.#+(  
public final static int IMPROVED_MERGE = 8; 2O@ON/  
public final static int HEAP = 9; I4+1P1z  
Y:\]d1C  
public static void sort(int[] data) { O`1!&XT{x  
sort(data, IMPROVED_QUICK); 5._QI/d)'J  
} 7O k-T10  
private static String[] name={ 0TA8#c  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0^Vw^]w  
}; $[ S 33Q  
tmoCy0qWz  
private static Sort[] impl=new Sort[]{ m1j Eky(  
new InsertSort(), 7Hv 6>z#m  
new BubbleSort(), 2bLc57j{`9  
new SelectionSort(), `7y3C\zyQ  
new ShellSort(), ;di .U,  
new QuickSort(), Ws1|idAT  
new ImprovedQuickSort(), t( V 2  
new MergeSort(), %'h:G Bkd  
new ImprovedMergeSort(), PX_9i@ZG  
new HeapSort() |v@_~HV  
}; Og1\6Q  
F.x7/;  
public static String toString(int algorithm){ Rf8ZH  
return name[algorithm-1]; IKnf  
} CQ<d  
Ye4 &4t  
public static void sort(int[] data, int algorithm) { tDah@_  
impl[algorithm-1].sort(data); UMBeY[ ?  
} xi.?@Lff  
#:yAi_Ct  
public static interface Sort { N#jUqm  
public void sort(int[] data); COm^ ti-p  
} 3!@& 7@p  
#y7MB6-  
public static void swap(int[] data, int i, int j) { rA8NE>  
int temp = data; RA!m,"RM  
data = data[j]; mt0v (  
data[j] = temp; i <gt`UCO  
} 04=RoYMM  
} a6ryyt 5  
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