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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。 J-HabHv  
插入排序: \H}@-*z+)  
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package org.rut.util.algorithm.support; #RsIxpc  
sZ\i(eIU  
import org.rut.util.algorithm.SortUtil; ^^W`Lh%9  
/** t/4/G']W  
* @author treeroot !YuON6{)  
* @since 2006-2-2 M $E8:  
* @version 1.0 *;~{_Disz  
*/ k;9#4^4(  
public class InsertSort implements SortUtil.Sort{ ^+.e5roBKj  
yDl5t-0`  
/* (non-Javadoc) av$\@4I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #dXZA>b9  
*/ ?L.p9o-S0  
public void sort(int[] data) { vCrWA-q#  
int temp; vM$#m1L?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Xqq?S  
} o>!~*b';g,  
} l%3Q=c  
} W"DxIy  
s`dkEaS  
} w^vK7Z 1$  
0o\=0bH&s  
冒泡排序: J0{WqA.P  
G/^5P5y%@  
package org.rut.util.algorithm.support; 'SXpb?CZ  
6 I>xd  
import org.rut.util.algorithm.SortUtil; Amq8q  
x<j($iv  
/** m78MWz]Yo  
* @author treeroot ff2.| 20  
* @since 2006-2-2 o8yEUnqN  
* @version 1.0 v:so85(S<  
*/ Ii2g+SlQDa  
public class BubbleSort implements SortUtil.Sort{ Qc)RrqYNGF  
x#!{5;V&K  
/* (non-Javadoc) :D)&>{?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tue%L]hc  
*/ bU@>1>b6lE  
public void sort(int[] data) { 1+y6W1m^R  
int temp; &Cn9 k3E\R  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4h0jX 9  
if(data[j] SortUtil.swap(data,j,j-1); m0q`A5!)  
} W.7d{ @n  
} TPmZ/c^  
} ~N+/ZVo&y  
} p{pzOMi6  
}<x!95  
} V-o`L`(F`  
-^NAHE$bW  
选择排序: wr6xuoH  
e#Zf>hlAz  
package org.rut.util.algorithm.support; y*TNJJ|  
Z!BQtICs  
import org.rut.util.algorithm.SortUtil; lyc{Z%!3  
E6d8z=X(  
/** ^#6%*(D  
* @author treeroot 1Tk\n  
* @since 2006-2-2 Yi! >8  
* @version 1.0 GF,|;)ly  
*/ z jNjmC!W  
public class SelectionSort implements SortUtil.Sort { U Edl"FwM4  
I]j/ ab7>  
/* 77[;J  
* (non-Javadoc) .]d tRH<  
* cbHn\m)J,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "5z6~dq  
*/ @):NNbtA  
public void sort(int[] data) { F7PZV+\  
int temp; X;[zfEB  
for (int i = 0; i < data.length; i++) { e"8m+]  
int lowIndex = i; =xQfgj  
for (int j = data.length - 1; j > i; j--) { .TrQ +k>  
if (data[j] < data[lowIndex]) { "u> sS  
lowIndex = j; QR-R5XNT[  
} s%?p%2&RA  
} I3y4O^?  
SortUtil.swap(data,i,lowIndex); Bjrv;)XH  
} OgpH{"  
} C%7,#}[U/  
9/qS*Zdh)  
} uL{~(?U$  
?@ye*%w_  
Shell排序: 1RO gUJ;  
1VM5W!}  
package org.rut.util.algorithm.support; NCh(-E  
ur quVb  
import org.rut.util.algorithm.SortUtil; &+|4(d1  
b5,}w:  
/** y5tAp  
* @author treeroot FZI 4?YD?<  
* @since 2006-2-2 %<o$ J~l~  
* @version 1.0 ezy5Jqk5%  
*/ K*i1! "w  
public class ShellSort implements SortUtil.Sort{ Ac(Vw%  
4I[FE;^  
/* (non-Javadoc) #YMp,i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <$Kv^Y*  
*/ \EfwS% P  
public void sort(int[] data) { blkJm9]v  
for(int i=data.length/2;i>2;i/=2){ ^+l\YB7pD  
for(int j=0;j insertSort(data,j,i); m.g@S30  
} vpw&"?T  
} "+ JwS  
insertSort(data,0,1); 5x'y{S<  
} 9%k.GE  
OU5|m%CmO  
/** P!&CH4+  
* @param data .F$AmVTN  
* @param j SG o:FG  
* @param i uT t:/gm  
*/ FwzA_ nn  
private void insertSort(int[] data, int start, int inc) { 2g8P$+;  
int temp; ;Z~.54Pf{d  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F0(Sv\<::  
} eBRP%<=>D  
} 2%yJo7f$[  
} ;GE u.PdxB  
h*LL(ow5  
} <R8Z[H:bV  
t'/;Z:  
快速排序: -ZON']|<}k  
a~TZ9yg+HL  
package org.rut.util.algorithm.support; DyTk<L  
g>-[-z$E3  
import org.rut.util.algorithm.SortUtil; *^5,7}9Qo  
xa*gQ%+F  
/** nAC#_\  
* @author treeroot ASU\O3%%  
* @since 2006-2-2 n\p\*wb  
* @version 1.0 491I  
*/ YGmdiY:;1  
public class QuickSort implements SortUtil.Sort{ Qg.:w  
PGhZ`nl  
/* (non-Javadoc) !27]1%Aw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ll09j Ef  
*/ (`Mz.VN  
public void sort(int[] data) { ?YykCJJ ~@  
quickSort(data,0,data.length-1); +E[)@;T  
} w[G_w:$a  
private void quickSort(int[] data,int i,int j){ ~,1q :Kue  
int pivotIndex=(i+j)/2; )t=u(:u]  
file://swap {EN@,3bA  
SortUtil.swap(data,pivotIndex,j); YYh_lAS>  
@O @yJ{(I  
int k=partition(data,i-1,j,data[j]); ,#O8:s  
SortUtil.swap(data,k,j); ?C2;:ol  
if((k-i)>1) quickSort(data,i,k-1); WkIV  
if((j-k)>1) quickSort(data,k+1,j); sYI':UQe  
'vIkA=  
} [ LDzR7vnf  
/** LkB!:+v |B  
* @param data GK%ovK  
* @param i s@iCfXU  
* @param j *?"{T;4u~O  
* @return 1 *CWHs  
*/  nGd  
private int partition(int[] data, int l, int r,int pivot) { I@M^Wu]wW  
do{ dw!Eao47  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lhj2u]yU0S  
SortUtil.swap(data,l,r); (32nI?)a  
} 9?c^~77  
while(l SortUtil.swap(data,l,r); 5/ju it  
return l; .)zISa*Xy  
} c3t8yifQ  
_q4m7C<  
} ='>UKy[=  
-Lb^O/  
改进后的快速排序: ,4,c-   
2H "iN[2A  
package org.rut.util.algorithm.support; ,quTMtk~  
,?/<fxIY  
import org.rut.util.algorithm.SortUtil; %/on\*Vh3  
gXJ^o;R>M  
/** *b_54X%3  
* @author treeroot ~`H<sJ?9  
* @since 2006-2-2 &2igX?60  
* @version 1.0 ;)a9Y?  
*/ `0D1Nh"%k  
public class ImprovedQuickSort implements SortUtil.Sort { uJ\Nga<?  
`%p6i| _Q  
private static int MAX_STACK_SIZE=4096; Zx 1z hc  
private static int THRESHOLD=10; ~ }22Dvo  
/* (non-Javadoc) _AbEQ\P{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #wiP{+%b  
*/ NvZ?e  
public void sort(int[] data) { =fo/+m5  
int[] stack=new int[MAX_STACK_SIZE]; gAP}KR#T  
qQvb;jO  
int top=-1;  gV kI=J  
int pivot; Fo~v.+^?  
int pivotIndex,l,r; RkwY3 s"  
Y1\vt+`O  
stack[++top]=0; 0&@ pX~h:  
stack[++top]=data.length-1; c<e\JJY5?  
$twF93u$  
while(top>0){ I!D*(>  
int j=stack[top--]; |hoZ:  
int i=stack[top--]; QovC*1'  
qKC*j DW  
pivotIndex=(i+j)/2; KK$A 4`YoR  
pivot=data[pivotIndex]; 1}*;  
jRAL(r|  
SortUtil.swap(data,pivotIndex,j); 0g-ESf``{n  
"|SE#k  
file://partition +r_[Tj|Er  
l=i-1; K6 7? d  
r=j; ;i>E @  
do{ |lV9?#!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bx4GFCdifC  
SortUtil.swap(data,l,r); ]E^f8s0#V  
} 09 s}@C  
while(l SortUtil.swap(data,l,r); I1O?)x~  
SortUtil.swap(data,l,j); V0i$"|F+ E  
wP"|$HN  
if((l-i)>THRESHOLD){ [CX?Tt  
stack[++top]=i; & jvG]>CS'  
stack[++top]=l-1; KL]!E ~i  
} 'bPo 5V|  
if((j-l)>THRESHOLD){ =i?,y +<  
stack[++top]=l+1; v19`7qgR(  
stack[++top]=j; 2zu~#qU[)M  
} wgrO W]e  
ArK9E!`^  
} Lm#d.AD)  
file://new InsertSort().sort(data); kELyD(^P`  
insertSort(data); or`stBx  
} |'_<(z  
/** [{$0E=&0  
* @param data i]pG}SJ  
*/ Uiw7Y\Im|  
private void insertSort(int[] data) { :X*LlN  
int temp; MGDv4cFE.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /GGu` f  
} YU(*kC8   
} "s9gQAoaO  
} ZQA C &:  
5&= n  
} )W|jt/  
p>3'77 V  
归并排序: n4y6Ua9m{  
%;$Y|RbmqE  
package org.rut.util.algorithm.support; I=a$1%BzEX  
}* JMc+!9@  
import org.rut.util.algorithm.SortUtil; kH -b!  
0u2uYiE-l  
/** yVzg<%CR^  
* @author treeroot :G/]rDtd  
* @since 2006-2-2 7g+]  
* @version 1.0 uf] $@6)  
*/ vyGLn  
public class MergeSort implements SortUtil.Sort{ ,5*xE\9G  
uiA:(2AQ  
/* (non-Javadoc) 5T#D5Z<m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =A 6O}0z  
*/ %=y3  
public void sort(int[] data) { Z"Ni Y  
int[] temp=new int[data.length]; i]%"s_l  
mergeSort(data,temp,0,data.length-1); olxP`iK  
} Nn1^#kc  
KBA%  
private void mergeSort(int[] data,int[] temp,int l,int r){ @A'1D@f#  
int mid=(l+r)/2; e/jM+%  
if(l==r) return ; rd4'y~#S  
mergeSort(data,temp,l,mid); yt: V+qdv  
mergeSort(data,temp,mid+1,r); 5>Yd\(`K  
for(int i=l;i<=r;i++){ gi@ji-10  
temp=data; q.km>XRk~  
} wJ*-K-  
int i1=l; 1[9j`~[([  
int i2=mid+1; CT%m_lN  
for(int cur=l;cur<=r;cur++){ [:@?,?V\N  
if(i1==mid+1) $IZZ`Z]B  
data[cur]=temp[i2++]; 6 <S&~q  
else if(i2>r) [;YBX] t  
data[cur]=temp[i1++]; >I~z7 JS  
else if(temp[i1] data[cur]=temp[i1++]; G$uOk?R#5c  
else }px]   
data[cur]=temp[i2++]; Kg-X]yu*0  
} i9U_r._qj;  
} l0xFt ~l  
>ImM~SR)  
} 1t=X: ]0j  
dU^<7 K:S  
改进后的归并排序: ,GP4I3D  
1?#9K j{ql  
package org.rut.util.algorithm.support; -8 =u{n  
q'@Ei4  
import org.rut.util.algorithm.SortUtil; L#q9_-(#  
YKOO(?lv  
/** b7sE  
* @author treeroot >1I2R/'  
* @since 2006-2-2 (ul-J4E\O  
* @version 1.0 fYM6wYJ  
*/ (H%d]  
public class ImprovedMergeSort implements SortUtil.Sort { UZXcKl>u  
8'WMspX  
private static final int THRESHOLD = 10; )pn7DIXG  
ai  _fN  
/* k&iScMgCTH  
* (non-Javadoc) ^|i\d \  
* @"Fp;Je\bN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w[oQ}5?9'  
*/ Mq lo:7 ^F  
public void sort(int[] data) { @EOR] ^?!]  
int[] temp=new int[data.length]; M2P@ &  
mergeSort(data,temp,0,data.length-1); 33*d/%N9  
} aX'g9E  
b_gN?F7_  
private void mergeSort(int[] data, int[] temp, int l, int r) { vcJb\LW  
int i, j, k; nk|N.%E  
int mid = (l + r) / 2; j*~dFGl)  
if (l == r) OK?3,<x  
return; J$9xC{L4  
if ((mid - l) >= THRESHOLD) AKC foJ  
mergeSort(data, temp, l, mid); K0RYI69_  
else Dq%r !)  
insertSort(data, l, mid - l + 1); Fxth> O`$  
if ((r - mid) > THRESHOLD) j[J@tM#  
mergeSort(data, temp, mid + 1, r); ]{2{:`s  
else Q] yT  
insertSort(data, mid + 1, r - mid); C6V&R1"s  
0"qim0%|DF  
for (i = l; i <= mid; i++) { !eAdm  
temp = data; !:O/|.+Vmf  
} OV("mNh  
for (j = 1; j <= r - mid; j++) { LLn{2,jfQ  
temp[r - j + 1] = data[j + mid]; nHA`B.:B  
} *(&ClUQQ  
int a = temp[l]; .4C[D{4  
int b = temp[r]; >yA,@%X  
for (i = l, j = r, k = l; k <= r; k++) { ^A "lkV7  
if (a < b) { K l0tyeT  
data[k] = temp[i++]; -wRyMY_ D  
a = temp; +>WC^s  
} else { qz=#;&ZU  
data[k] = temp[j--]; <r+!hJ[s'  
b = temp[j]; ,*nZf|  
} g y e(/N+I  
} <.=#EV^i  
} [b i3%yWh  
vMZ7uO  
/** L_lDFF  
* @param data 4$zFR}f  
* @param l ZkB6bji  
* @param i |;.Pj 3)-  
*/ q 5v?`c  
private void insertSort(int[] data, int start, int len) { *)`kx   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :m++ iR  
} TcKvSdr'  
} g#'fd/?Q  
} x*R8^BA]pR  
} UrhM)h?%  
Z'}(t,  
堆排序: Vy% :\p+  
wsJ%* eYf  
package org.rut.util.algorithm.support; U!\2K~  
Dz8:; $/  
import org.rut.util.algorithm.SortUtil; [UJEU~XC  
WE.$at{*h  
/** y  KYP  
* @author treeroot iIGI=EwZ  
* @since 2006-2-2 A`x -L  
* @version 1.0 iJZ|[jEDV  
*/ JIP+ !2  
public class HeapSort implements SortUtil.Sort{ };"+ O  
<K,% y(]  
/* (non-Javadoc) O@r.>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ckf<N9  
*/ RrO0uadmn  
public void sort(int[] data) { 5i4V5N>3  
MaxHeap h=new MaxHeap(); 77xq/c[)  
h.init(data); i[2bmd!H  
for(int i=0;i h.remove(); 9QH9gdiw  
System.arraycopy(h.queue,1,data,0,data.length); p2Dh3)&  
} J+71FP`ZH  
97(Xu=tX  
private static class MaxHeap{ S$jV|xK B  
<}EV*`w4  
void init(int[] data){ B?;' lDz*  
this.queue=new int[data.length+1]; *gd?>P7\0  
for(int i=0;i queue[++size]=data; <Qcex3  
fixUp(size); )+n,5W  
} JQ"`9RNb  
} Xq,UV  
ePq13!FC/  
private int size=0; ceb s.sF:  
gV"qV   
private int[] queue; =f4[=C$&`  
<G~} N  
public int get() { &2io^A P  
return queue[1]; TvunjTpaj  
} m"gni #  
UCn*UX  
public void remove() { r zMFof  
SortUtil.swap(queue,1,size--); Ew %{ i(d  
fixDown(1); %XP_\lu]  
} D!bKm[T  
file://fixdown GJ1;\:cQq  
private void fixDown(int k) { d~{jEg  
int j; L$+d.=]  
while ((j = k << 1) <= size) { K\{b!Cfr^  
if (j < size %26amp;%26amp; queue[j] j++; W\@?e32  
if (queue[k]>queue[j]) file://不用交换 9Z,*h-o  
break; {W5ydHXy  
SortUtil.swap(queue,j,k); bJQ5- *F  
k = j; AT B\^;n.  
} cOSxg=~>u  
} eyeNrk*2o  
private void fixUp(int k) { [G{rHSK5tQ  
while (k > 1) { CM%|pB/z  
int j = k >> 1; < /;Q8;0  
if (queue[j]>queue[k]) V$/u  
break; Em e'Gk  
SortUtil.swap(queue,j,k); Sl3KpZ  
k = j; Gb(C#,xbK  
} $ Wit17j  
} r]A" Og_U  
}P<Qz^sr_  
} tcBC!_vF  
xS6(K  
} #ZG3|#Q=L  
-VS9`7k  
SortUtil: C#MF pT  
<^lJr82  
package org.rut.util.algorithm; }3v'Cp0L  
$ A-+E\vQ@  
import org.rut.util.algorithm.support.BubbleSort; JDLTOLG  
import org.rut.util.algorithm.support.HeapSort; &w+;N5}3  
import org.rut.util.algorithm.support.ImprovedMergeSort; slU  
import org.rut.util.algorithm.support.ImprovedQuickSort; (k%GY< bP  
import org.rut.util.algorithm.support.InsertSort; W8w3~  
import org.rut.util.algorithm.support.MergeSort; 01U *_\  
import org.rut.util.algorithm.support.QuickSort; bTZ>@~$  
import org.rut.util.algorithm.support.SelectionSort; 9$Ig~W)  
import org.rut.util.algorithm.support.ShellSort; 0:Ar| to$m  
;% 2wGT  
/** Ho 3dsh)  
* @author treeroot U't E^W  
* @since 2006-2-2 FH)t:!#  
* @version 1.0 CzYGq  
*/ ;wJ~haC  
public class SortUtil { $o]r ]#B+  
public final static int INSERT = 1; :w@F?:C  
public final static int BUBBLE = 2; 81~Kpx  
public final static int SELECTION = 3; A0G)imsW:_  
public final static int SHELL = 4;  t?gJNOV  
public final static int QUICK = 5; v`y6y8:>  
public final static int IMPROVED_QUICK = 6; Z+g1~\  
public final static int MERGE = 7; !C Vuw  
public final static int IMPROVED_MERGE = 8; <0CzB"Ap  
public final static int HEAP = 9; #EJhAJ  
B?+ .2  
public static void sort(int[] data) { {jvOHu  
sort(data, IMPROVED_QUICK); ]b3/Es+  
} ,eR8 ~(`=  
private static String[] name={ 6SE6AL<b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $:Rn;  
}; FY$fV"s  
gX[|;IZ0o  
private static Sort[] impl=new Sort[]{ 4|`Yz%'  
new InsertSort(), )h#]iGVN}  
new BubbleSort(), puOC60zI  
new SelectionSort(), Ck: 9gn  
new ShellSort(), Rj^7#,993  
new QuickSort(), :z]}ZZ  
new ImprovedQuickSort(), ?AEd(_a!q  
new MergeSort(), -;^;2#](g  
new ImprovedMergeSort(), q#MM  
new HeapSort() !lAD q|$  
}; sONBQ9  
o/C(4q6d  
public static String toString(int algorithm){ 9Gca6e3  
return name[algorithm-1]; - a y5  
} O`WIkBV!  
>&OUGu|  
public static void sort(int[] data, int algorithm) { #/|75 4]]  
impl[algorithm-1].sort(data); zrs<#8!Y_!  
} (:5G#?6,  
9qKzS<"h  
public static interface Sort { [QT 1Ju64  
public void sort(int[] data); Wt^|BjbB4  
} -_NC%iN#C  
98fu>>*G{  
public static void swap(int[] data, int i, int j) { l[ne/O JJ  
int temp = data; Ir5WN_EaS  
data = data[j]; %JtbRs(~q  
data[j] = temp; mLwoi!]m  
} {Hl[C]25X  
} TI=h_%mO  
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