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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。 k!]Tg"]JAh  
插入排序: ba?]eK   
13]sZ([B%|  
package org.rut.util.algorithm.support; vXnTPjbE  
K%<Z"2!+  
import org.rut.util.algorithm.SortUtil; <!\J([NM8  
/** Riq5Au?*)  
* @author treeroot I3xx}^V  
* @since 2006-2-2 BPnZ"w_  
* @version 1.0 ,=tVa])  
*/ `@{qnCNQ  
public class InsertSort implements SortUtil.Sort{ A$RN7#  
9-+6Ed^2  
/* (non-Javadoc) x C'>W"pY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DVYY1!j<  
*/ 63QSYn,t  
public void sort(int[] data) { a$I; L  
int temp; " [=Ee[/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 39 JLi~j,  
} ~e[)]b3  
} 0\AYUa?RM  
} GYiUne $  
;o\0:fzr  
} [IxZweK  
J=/|iW  
冒泡排序: j0sR]i  
voaRh@DZ%/  
package org.rut.util.algorithm.support; F!VC19<1O8  
l[ ^bo/  
import org.rut.util.algorithm.SortUtil; kTG}>I  
]?U:8%  
/** J$PE7*NU  
* @author treeroot p/WEQ2   
* @since 2006-2-2  @4_CR  
* @version 1.0 9dw02bY`  
*/ ||7r'Q  
public class BubbleSort implements SortUtil.Sort{ Zx<s-J4o=w  
Z{RgpVt  
/* (non-Javadoc) hNFMuv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|7fd|6~  
*/ VLtb16|  
public void sort(int[] data) { SDV} bN  
int temp; "P< drz<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _y`'T;~OY  
if(data[j] SortUtil.swap(data,j,j-1); A0S6 4(  
} 1K,bmb xRt  
} qO>BF/)a(  
} 2:i`,  
} qwA: o-q"  
Zx5vIm  
} =#1iio&  
D6_16PJE  
选择排序: 33couAP#  
xJ%b<y{@  
package org.rut.util.algorithm.support; z]\0]i  
lbg!B4,  
import org.rut.util.algorithm.SortUtil; |U$oS2U\m  
,Mc}U9)F  
/** &nj@t>5Bs$  
* @author treeroot hW>@jT"t1C  
* @since 2006-2-2 Kd;|Z  
* @version 1.0 qX:54$t  
*/ g<KBsz!{  
public class SelectionSort implements SortUtil.Sort { Czb@:l%sc  
P 2;j>=W  
/* w0moC9#$?  
* (non-Javadoc) _}`iLA!$I  
* y{K~g<VL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? {cF'RB.  
*/ !e.@Xk.P6  
public void sort(int[] data) { `-Gs*#(/  
int temp; Tb}`]Y`X  
for (int i = 0; i < data.length; i++) { V# w$|B\  
int lowIndex = i; o?^j1\^  
for (int j = data.length - 1; j > i; j--) { 'fcJ]%-=  
if (data[j] < data[lowIndex]) { Pp3tEZfE  
lowIndex = j; :!3CoC.X|c  
} u&bo32fc  
} S! ,.#e(Y  
SortUtil.swap(data,i,lowIndex); ]=q?= %H  
} |...T 4:^Y  
} w{K_+}fAC  
j4H,*fc  
} )F]E[sga  
|? ?uVA)\X  
Shell排序: 5`6@CRef  
2#6yO`?uo  
package org.rut.util.algorithm.support; b)$<aFl  
E[2c`XFd8  
import org.rut.util.algorithm.SortUtil; &OGY?[n  
QS_" fsyN:  
/** X,x{!  
* @author treeroot ^7TM.lE  
* @since 2006-2-2 =wU08}  
* @version 1.0 nd_d tsp#  
*/ GR O[&;d`  
public class ShellSort implements SortUtil.Sort{ OMO.-p  
u Dm=W36  
/* (non-Javadoc) &bs/a] ?Z7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?K I_>{  
*/ gGe `w  
public void sort(int[] data) { F7#   
for(int i=data.length/2;i>2;i/=2){ x1$fkNu  
for(int j=0;j insertSort(data,j,i); aQ]C`9k  
} gjvKrg  
} sqJ?dIBH  
insertSort(data,0,1); *'PG@S  
} Jan73AOX  
'(&.[Pk:"  
/** 6BLw 4m=h  
* @param data v~ZdMQvwt  
* @param j '`\\O:@C`  
* @param i t%q@W,2J  
*/ }LDDm/$^}  
private void insertSort(int[] data, int start, int inc) { DDc?G Y:  
int temp; hM/|k0YV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8WZM}3x$f{  
} E7oL{gU  
} d1``} naNw  
} uUwwR(R  
vDv:3qN7(  
} a0CmCv2#  
ArbfA~jXB  
快速排序: DP &,jU6  
FuLP{]Y+AM  
package org.rut.util.algorithm.support; t_x \&+W  
)g9Zw_3  
import org.rut.util.algorithm.SortUtil; [$;6LFs }  
Kt;h'?  
/** _CciU.1k&,  
* @author treeroot d*3k]Ie%5f  
* @since 2006-2-2 (Pbdwzao  
* @version 1.0 w2YfFtgD,  
*/ +P6q wh\v  
public class QuickSort implements SortUtil.Sort{ yWsN G;>  
4}!riWR   
/* (non-Javadoc) ~*- eL.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2^E.sf$f  
*/ )(_}60  
public void sort(int[] data) { x =5k74  
quickSort(data,0,data.length-1); V[5-A $ft  
} *(PGL YK  
private void quickSort(int[] data,int i,int j){  l}5@6;}  
int pivotIndex=(i+j)/2; $cSrT)u :  
file://swap # 0dN!l;  
SortUtil.swap(data,pivotIndex,j); bQr H8)  
]j~V0 1p/e  
int k=partition(data,i-1,j,data[j]); 5|9,S  
SortUtil.swap(data,k,j); *y='0)[BD  
if((k-i)>1) quickSort(data,i,k-1); b{b2L.  
if((j-k)>1) quickSort(data,k+1,j); ow>^(>^~  
pD eqBO  
} ZXFM_>y 5  
/** o;D87E6Z  
* @param data C*,-lk0b@  
* @param i [ C,<Q  
* @param j OgY4J|<  
* @return _ohZTT%l  
*/ B<I%:SkF@  
private int partition(int[] data, int l, int r,int pivot) { c'vxT<8fWW  
do{ (es+VI2!&C  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ic%<39  
SortUtil.swap(data,l,r); +5JCbT@y  
} nws '%MK)  
while(l SortUtil.swap(data,l,r); =%%\b_\L  
return l; w9SPkPkYE  
} Tu?+pz`h  
SWN i@  
} zy"L%i  
{W)Kz_  
改进后的快速排序: " 2Dz5L1v  
dpDVEEs84  
package org.rut.util.algorithm.support; N&]v\MjI62  
[}9sq+##  
import org.rut.util.algorithm.SortUtil; \ ExM.T  
-}/u?3^-  
/** E5~HH($b  
* @author treeroot t>)iC)^u  
* @since 2006-2-2 C\ZL*,%}  
* @version 1.0 Vl%AN;o  
*/ m.iCGX  
public class ImprovedQuickSort implements SortUtil.Sort { rr>QG<i;G  
o8-BTq8  
private static int MAX_STACK_SIZE=4096; {Kx eH7S  
private static int THRESHOLD=10; w4Qqo(  
/* (non-Javadoc) [2pp)wq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6iV jAxR  
*/ '_lyoVP  
public void sort(int[] data) { L'BDS*  
int[] stack=new int[MAX_STACK_SIZE]; puF'w:I (  
9z$]hl  
int top=-1; Z3g6 ?2w6  
int pivot; z\Rs?v"  
int pivotIndex,l,r; GpMKOjVm|  
`MA ee8u'  
stack[++top]=0; X/ gIH/  
stack[++top]=data.length-1; gbsRf&4h  
y>Zvose  
while(top>0){ ! @{rk p  
int j=stack[top--]; 1P. W 34  
int i=stack[top--]; ^VK-[Sz&  
:9Zu&t  
pivotIndex=(i+j)/2; nm'sub  
pivot=data[pivotIndex]; 11glFe  
%<lfe<;^t  
SortUtil.swap(data,pivotIndex,j); nfJ|&'T  
0#pjfc `:  
file://partition MqGF~h|+  
l=i-1; |5 _bFB+&  
r=j; ;2Db/"`t  
do{ bE#=\kf|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); jJk M:iR  
SortUtil.swap(data,l,r); D9zw' R Y  
} guz{DBlK  
while(l SortUtil.swap(data,l,r); KE1S5Mck>  
SortUtil.swap(data,l,j); "nPmQ  
%C\Q{_AS  
if((l-i)>THRESHOLD){ ]sjYxe  
stack[++top]=i; ^m;dEe&@F  
stack[++top]=l-1; dB+x,+%u+  
} ?VrZM  
if((j-l)>THRESHOLD){ a/;u:"  
stack[++top]=l+1; Y]/(R"-2G  
stack[++top]=j; q>/# P5V  
} 8Y*SZTzV  
$e& ( ncM  
} l>`N+ pZ$  
file://new InsertSort().sort(data); (f#QETiV  
insertSort(data); .=~beTS'Vo  
} _IuEa\>  
/** +6|Ys  
* @param data b Gq0k&  
*/ Sj]k5(&  
private void insertSort(int[] data) { pJrc\`D  
int temp; X&o!xV -+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [t*m$0[:  
} \kqa4{7U(  
} .j:.?v  
} fzO4S^mTo8  
8J{I6nPF  
} 8>S"aHt 7  
YLmzMD>  
归并排序: .281;] =  
]as_7  
package org.rut.util.algorithm.support; #t:]a<3Y2  
5JW+&XA  
import org.rut.util.algorithm.SortUtil; `*cT79  
T=35?   
/** 9w'3d @  
* @author treeroot xoF]r$sC8  
* @since 2006-2-2 -fw0bL%0  
* @version 1.0 #qXE[%  
*/ 4r ;!b;3  
public class MergeSort implements SortUtil.Sort{ }M'h 5x  
aDFu!PLB{)  
/* (non-Javadoc) 3t22KY[`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %ANo^~8  
*/ .yE!,^j.gB  
public void sort(int[] data) { O( G|fs  
int[] temp=new int[data.length]; V#.;OtF]  
mergeSort(data,temp,0,data.length-1); + 5H9mk  
} u +q}9  
CnruaN@  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?jbE3fW  
int mid=(l+r)/2; Y^m2ealC  
if(l==r) return ; +N5#EpW  
mergeSort(data,temp,l,mid); 2ME"=! &5  
mergeSort(data,temp,mid+1,r); N(>a-a  
for(int i=l;i<=r;i++){ 6NH.!}"G9  
temp=data; g66=3c9</6  
} x^Tjs<#  
int i1=l; [?x9NQ{  
int i2=mid+1; ?#!Hm`\.  
for(int cur=l;cur<=r;cur++){ kKVd4B[#*  
if(i1==mid+1) %[\: 8  
data[cur]=temp[i2++]; n"vl%!B  
else if(i2>r) a]'sby  
data[cur]=temp[i1++]; F+,X%$A#?  
else if(temp[i1] data[cur]=temp[i1++]; JW9^C  
else 0Ge*\Q  
data[cur]=temp[i2++]; 8*kZ.-T B  
} Y,RED5]t  
} v39`ct=e  
*#1&IJPI  
} >Z?fX  
0l3v>ty  
改进后的归并排序: 9;2PoW8  
s^ rO I~  
package org.rut.util.algorithm.support; '$pT:4EuGq  
ATCFdtNc  
import org.rut.util.algorithm.SortUtil; "<ow;ciJF  
In^MZ)?  
/** "}Kvx{L8  
* @author treeroot 2K<rK(  
* @since 2006-2-2 i)f3\?,,  
* @version 1.0 ]'V8{l  
*/ #P*%FgROl  
public class ImprovedMergeSort implements SortUtil.Sort { dQ?4@  
Mm`jk%:%]  
private static final int THRESHOLD = 10; C\Q3vG  
VTk6.5!8  
/* <J-bDcp  
* (non-Javadoc) 6TJ5G8z_  
* ;Q&38qI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <GPL8D  
*/ _Z+tb]  
public void sort(int[] data) { pw{3I 2Ix  
int[] temp=new int[data.length]; _F>1b16:/P  
mergeSort(data,temp,0,data.length-1); /Y5I0Ko Uw  
} ,{:c<W:A]  
HmKvu"3  
private void mergeSort(int[] data, int[] temp, int l, int r) { wVkms  
int i, j, k; IK5FSN]s/  
int mid = (l + r) / 2; L,!?'.*/]  
if (l == r) #m?GBr%k  
return; "6_#APoP  
if ((mid - l) >= THRESHOLD) fgg^B[(Y  
mergeSort(data, temp, l, mid); `M/=_O3  
else yLCqlK  
insertSort(data, l, mid - l + 1); KK4>8zGR  
if ((r - mid) > THRESHOLD) *6 -;iT8  
mergeSort(data, temp, mid + 1, r); 6la# 0U23  
else ?xh_qy;  
insertSort(data, mid + 1, r - mid); ,6Sa  
J XKps#,(#  
for (i = l; i <= mid; i++) { _?>!Bz m  
temp = data; 4NN-'Z>a  
} ms'&.u&<  
for (j = 1; j <= r - mid; j++) { =o\ :@I[  
temp[r - j + 1] = data[j + mid]; u{0+w\xH\  
}  v'i"Q  
int a = temp[l]; LqIMU4Ex  
int b = temp[r]; J0zudbP  
for (i = l, j = r, k = l; k <= r; k++) { o_&.R  
if (a < b) { |t CD@M  
data[k] = temp[i++]; MV6 %~T  
a = temp; Ag}V>i'  
} else { qd{o64;|  
data[k] = temp[j--]; pcXY6[#N  
b = temp[j]; HX\@Qws  
} ;wND?:  
} 3U<\y6/  
} 0h!2--Aur  
BF8n: }9U  
/** @_ ^QBw0  
* @param data `%;n HQ"  
* @param l :,rD5a OQ  
* @param i 4 q}1  
*/ 1<A+.W  
private void insertSort(int[] data, int start, int len) { k$:QpTg[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f^](D'L?D  
} WS9n.opl}  
} [W=%L:Ea  
} IcZ_AIjlk  
} ^% BD  
S`2MQL  
堆排序: .vNfbYH(  
vW]Frb  
package org.rut.util.algorithm.support; 1Uz'= a  
!OWVOq8  
import org.rut.util.algorithm.SortUtil; ,e+.Q#r*Y  
'KpCPOhfR  
/** D *W+0  
* @author treeroot dvxD{UH  
* @since 2006-2-2 Z)'jn8?P  
* @version 1.0 +A8S 6bA[=  
*/ Le9r7O:  
public class HeapSort implements SortUtil.Sort{ 1~8F&  
z   
/* (non-Javadoc) 6yk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Zs"CDU  
*/ 8B;`9?CI  
public void sort(int[] data) { 7p3 ;b"'  
MaxHeap h=new MaxHeap(); g3n^ <[E  
h.init(data); {l{p  
for(int i=0;i h.remove(); ?I}jsm1)  
System.arraycopy(h.queue,1,data,0,data.length); +P|$T:b  
} 7c!oFwM  
~6U@*Svk  
private static class MaxHeap{ _tL+39 u  
acB,u&  
void init(int[] data){ *{W5QEa  
this.queue=new int[data.length+1]; I'"*#QOX  
for(int i=0;i queue[++size]=data; ar+mj=m  
fixUp(size); 9bgKu6-X  
} FMY r6/I  
} oV ?tp4&  
~cSC-|$^&  
private int size=0; .6!]RA5!=  
J&^r}6D  
private int[] queue; 1w+On JI?  
JeMhiY}  
public int get() { ,iCd6M{  
return queue[1]; o"[P++qd  
} nhk +9  
N rVQK}%K  
public void remove() { dDW],d}B;  
SortUtil.swap(queue,1,size--); RUf,)]Vvk  
fixDown(1); /7@@CG6b  
} }^G'oR1LF  
file://fixdown C JiMg'K  
private void fixDown(int k) { @SPmb o  
int j; <<(~'$~,L  
while ((j = k << 1) <= size) { ':[+UUC@  
if (j < size %26amp;%26amp; queue[j] j++; [=e61Z  
if (queue[k]>queue[j]) file://不用交换 [#j|TBMHM  
break; ig; ~ T  
SortUtil.swap(queue,j,k); IK{0Y#c  
k = j; /.'1i4Xa1P  
} \yb^%$hZ0  
} +x G](?  
private void fixUp(int k) { Ec_ G9&  
while (k > 1) { Y8.0R-:ZAN  
int j = k >> 1; j='Ne5X1  
if (queue[j]>queue[k])  _+|*  
break; fouy??  
SortUtil.swap(queue,j,k); '7>Vmr 6  
k = j; QC4_\V>[  
} tt|U,o  
} AEPgQ9#E  
|Y(].G,  
} 4TG|  
dyWWgC%A  
} ksDG8^9>]  
"$0f.FO:i  
SortUtil: W$gSpZ_7  
K/Q;]+D  
package org.rut.util.algorithm; FD|R4 V*3  
GD[~4G  
import org.rut.util.algorithm.support.BubbleSort; :KX/`   
import org.rut.util.algorithm.support.HeapSort; XIBw&mWf  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]*i>KR@G  
import org.rut.util.algorithm.support.ImprovedQuickSort; VmBLNM?  
import org.rut.util.algorithm.support.InsertSort; g?j"d{.9t  
import org.rut.util.algorithm.support.MergeSort; qFUpvTe  
import org.rut.util.algorithm.support.QuickSort; ZI}m~7  
import org.rut.util.algorithm.support.SelectionSort; $ }B"u;:SU  
import org.rut.util.algorithm.support.ShellSort; H/)=  
A ,LAA$  
/** C+5^[V  
* @author treeroot dUb(C1h  
* @since 2006-2-2 L8bq3Q'p  
* @version 1.0 "%f>/k;!h.  
*/ OFRzzG@  
public class SortUtil { k% In   
public final static int INSERT = 1; JB%6G|Z  
public final static int BUBBLE = 2; MM'<uy  
public final static int SELECTION = 3; IZAbW  
public final static int SHELL = 4; GmAE!+"  
public final static int QUICK = 5; apY m,_  
public final static int IMPROVED_QUICK = 6; u8o7J(aQsR  
public final static int MERGE = 7; 9\Xl 3j!  
public final static int IMPROVED_MERGE = 8; 0QC*Z (  
public final static int HEAP = 9; b17p; wS  
G>:l(PW:  
public static void sort(int[] data) { #Q'i/|g   
sort(data, IMPROVED_QUICK); B]*&lRR  
} gmLw.|-  
private static String[] name={ <V6#)^Or  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JH)&Ca>S  
}; r4D66tF  
_R5^4-Qe  
private static Sort[] impl=new Sort[]{ ;F5B)&/B  
new InsertSort(), cK-!Evv  
new BubbleSort(), zLxWyPM0;  
new SelectionSort(), ? erDP8  
new ShellSort(), 2lp.Td`{  
new QuickSort(), HNh=igu  
new ImprovedQuickSort(), ;quGy3  
new MergeSort(), 3ZZJYf=  
new ImprovedMergeSort(), snEkei|0  
new HeapSort() D ^ &!  
}; `J-"S<c?_  
' > \*  
public static String toString(int algorithm){ B;K{Vo:C  
return name[algorithm-1]; V9<[v?.\  
} 7#g C(&\A  
aD&10b9`  
public static void sort(int[] data, int algorithm) { jzPC9  
impl[algorithm-1].sort(data); CJu;X[6  
} fA 3  
yS3x))  
public static interface Sort { Sl$dXB@  
public void sort(int[] data); pp{);  
} U-lN_?  
uq 6T|Zm  
public static void swap(int[] data, int i, int j) { -y/?w*Cx  
int temp = data; [j!0R'T  
data = data[j]; fptW#_V2  
data[j] = temp; iww h,(  
} S [u <vHy  
} cnIy*!cJs  
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