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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。 =R$u[~Xl2X  
插入排序: t)$:0  
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package org.rut.util.algorithm.support; CU2*z(]&  
_H7x9 y=  
import org.rut.util.algorithm.SortUtil; #( 146  
/** '$]97b7G  
* @author treeroot >$/>#e~  
* @since 2006-2-2 O)n~](sC\  
* @version 1.0 l L@XM2"  
*/ `Cynj+PCe  
public class InsertSort implements SortUtil.Sort{ !9VY|&fHe  
-3Z,EaG^  
/* (non-Javadoc) O23k:=Av  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q Y? j#fzi  
*/ m'=Crei  
public void sort(int[] data) { e)? .r9pA;  
int temp; a![{M<Y~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IDriGZZ<)6  
} h_,i&d@(  
} j@3Q;F0ba  
} q\4Xs$APq  
9W1YW9rL  
} ~H<6gN<j(.  
+.b,AqJ/  
冒泡排序: .2Elr(&*h  
H;k~oIs k  
package org.rut.util.algorithm.support; 3<f}nfB%r?  
2E)-M9ds  
import org.rut.util.algorithm.SortUtil; ,Np0wg0  
T<Z &kYU:R  
/** fW1CFRHH  
* @author treeroot ! Y~FLA_  
* @since 2006-2-2 K)|G0n*qS  
* @version 1.0 `MN4uC  
*/ ,77d(bR<  
public class BubbleSort implements SortUtil.Sort{ _FU_Ubkr  
$AjHbU.I{  
/* (non-Javadoc) o&)8o5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?(F6#"/E  
*/ }I6veagK  
public void sort(int[] data) { goOCu  
int temp; dhf!o0'1M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ u5b|#&-mX  
if(data[j] SortUtil.swap(data,j,j-1); `w7v*h|P  
} Ma']?Rb`  
} S3*`jF>q  
} h-K_Lr]  
} a;qryUyG  
=M [bnq*\  
} PQSP&  
jTtu0Q|  
选择排序: Q}K"24`=  
b;W3j   
package org.rut.util.algorithm.support; M@H;pJ+B  
4ber!rJM  
import org.rut.util.algorithm.SortUtil; *:LK8U  
x$.^"l-vX  
/** g<; q.ZylT  
* @author treeroot ?*1uN=oI{*  
* @since 2006-2-2 o!Ieb  
* @version 1.0 ;dtA4:IRZ4  
*/ %XoiVlT@:  
public class SelectionSort implements SortUtil.Sort { {{D)YldtA  
*-=(Q`3  
/* %i9E @EV  
* (non-Javadoc) GxI!{oi2  
* U} e!Wjrc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S.94 edQ  
*/ /h H  
public void sort(int[] data) { lH x^D;m6  
int temp; Kp~VS<3  
for (int i = 0; i < data.length; i++) { s_OF(o  
int lowIndex = i; ~IfJwBn-i  
for (int j = data.length - 1; j > i; j--) { tGh~!|P  
if (data[j] < data[lowIndex]) { Ms5ap<q#  
lowIndex = j; HI R~"It$  
} "fCu=@i  
} +_?hK{Ib"  
SortUtil.swap(data,i,lowIndex); 8:c-k|CX  
} wOEj)fp .  
} +ocol6G7W  
fF$<7O)+]  
} L_uVL#To  
RXpw!  
Shell排序: rb2S7k0{  
o WrKM  
package org.rut.util.algorithm.support; 'EEJU/"u  
ug!s7fo^  
import org.rut.util.algorithm.SortUtil; J6s`'gFns  
qo90t{|c  
/** 'KS,'%  
* @author treeroot nQX:T;WL@  
* @since 2006-2-2 uD$u2  
* @version 1.0 hk(ZM#Bh  
*/ <EB+1GFuI  
public class ShellSort implements SortUtil.Sort{ [#<-ZC#T*  
@fZ,.2ar  
/* (non-Javadoc) |mdVdD~go  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( iBl   
*/  3s,g*  
public void sort(int[] data) { .779pT!,M  
for(int i=data.length/2;i>2;i/=2){ ?cBwPetp  
for(int j=0;j insertSort(data,j,i); DnMwUykF>0  
} av}k)ZT_  
} < Mn ;  
insertSort(data,0,1); G7` ko1-  
} \Xt7`I<  
!N\@'F!  
/** (lBCO?`fx  
* @param data (>UZ<2GPL  
* @param j 2\A$6N ;_  
* @param i Ja7R2-0ii#  
*/ g|DF[  
private void insertSort(int[] data, int start, int inc) { N=T<_`$5  
int temp; RE7?KR>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t9kzw*U9  
} ';w#w<yaI  
} b,l$1{  
} Z58 X5"  
(Ft+uuG  
} jiV<+T?  
^EtMxF@D  
快速排序: IXMop7~  
ITE{@1  
package org.rut.util.algorithm.support; LvH 4{B  
=\&;Fi]  
import org.rut.util.algorithm.SortUtil; =V, mtT  
DbBcQ%  
/** qOIyub  
* @author treeroot 1y4|{7bb  
* @since 2006-2-2 }W C[$Y_@  
* @version 1.0 n Mq,F#`3N  
*/ UAkT*'cB  
public class QuickSort implements SortUtil.Sort{ !=*g@mgF  
T] f ;km  
/* (non-Javadoc) Ex Y]Sdx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9N#_( uwt  
*/ 0rQMLx  
public void sort(int[] data) { G}9Jg  
quickSort(data,0,data.length-1); >a!/QMh  
} CTB~Yj@d+  
private void quickSort(int[] data,int i,int j){ >Eyt17_H"n  
int pivotIndex=(i+j)/2; ^b4 9  
file://swap |sJ[0z  
SortUtil.swap(data,pivotIndex,j); vjbASFF0=  
y2Q&s 9$Do  
int k=partition(data,i-1,j,data[j]); Maha$n*  
SortUtil.swap(data,k,j); d\&U*=  
if((k-i)>1) quickSort(data,i,k-1); /kZebNf6H  
if((j-k)>1) quickSort(data,k+1,j); e&|'I"  
SB;&GHq"n  
} e/KDw  
/** !fV+z%:  
* @param data Avge eJi  
* @param i j"t(0 m  
* @param j IA fc T!{  
* @return 1*P~!2h  
*/ .wEd"A&j  
private int partition(int[] data, int l, int r,int pivot) { *<$*"p  
do{ ttaM.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B?eCe}*f;B  
SortUtil.swap(data,l,r); 0JWDtmK=C  
} 2prU  
while(l SortUtil.swap(data,l,r); -V*R\,>  
return l; 9@SC}AF.  
}  R~TTL  
m<<+  
} a{L%7  
NlA,'`,  
改进后的快速排序: oM X  
fF!Yp iI"  
package org.rut.util.algorithm.support; h/QXPdV  
!4ocZmj\  
import org.rut.util.algorithm.SortUtil; Hc;[Cs0  
j"8ZM{aO  
/** SpIv#?  
* @author treeroot <v"R.<  
* @since 2006-2-2 z{%<<pZ  
* @version 1.0 @f_Lp%K  
*/ W- $Z(Z XL  
public class ImprovedQuickSort implements SortUtil.Sort { ")1:F>  
*l(7D(#  
private static int MAX_STACK_SIZE=4096; WJ]T\DI  
private static int THRESHOLD=10; *[Imn\hu  
/* (non-Javadoc) `Y0%c Xi3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m;$ b'pT  
*/ ,5P0S0*{  
public void sort(int[] data) { [CTnXb  
int[] stack=new int[MAX_STACK_SIZE]; '9%\;  
k`cfG\;r  
int top=-1; ^L,K& Jd  
int pivot; =bAx,,D#  
int pivotIndex,l,r; ]"pVj6O  
+X\FBvP&  
stack[++top]=0; dUD[e,?  
stack[++top]=data.length-1; vJLK,[  
s2a{>II6  
while(top>0){ {Ea b j  
int j=stack[top--]; x f'V{9*  
int i=stack[top--]; 5p,RI&nlN  
W Tcw4  
pivotIndex=(i+j)/2; ;_XFo&@  
pivot=data[pivotIndex]; h! ,v/7=  
;gD})@  
SortUtil.swap(data,pivotIndex,j); %6t:(z  
./XYd"p  
file://partition Qry@ s5  
l=i-1; ;'gWu  
r=j; xW+6qtG`  
do{ 9V a}I-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mwO6g~@ `  
SortUtil.swap(data,l,r); ^23~ZHu  
} 1wii8B6  
while(l SortUtil.swap(data,l,r); 2zX]\s?3  
SortUtil.swap(data,l,j); mupT<_Y  
ynp8r f  
if((l-i)>THRESHOLD){ t"sBPLU\  
stack[++top]=i; a6 ekG YW  
stack[++top]=l-1; }czrj%6  
} l&[O  
if((j-l)>THRESHOLD){ .zf~.R;>  
stack[++top]=l+1; gZVc 5u<  
stack[++top]=j; &L3M]  
} "6A ` q\  
U%-A?5  
} #j;^\rSv-  
file://new InsertSort().sort(data); &Hrj3E  
insertSort(data); eB2a-,  
} )J=!L\  
/** D2 #ZpFp"h  
* @param data V(}:=eK  
*/ 6]i-E>p3R  
private void insertSort(int[] data) { S*pGMuui  
int temp; Xa[.3=bV?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )Dm s  
} > [)7U _|p  
} A]*}HZ ,  
} fT|.@%"vc  
+tB=OwU%0  
} ]IaMp788  
~"gA,e-)  
归并排序: rV.}PtcFY  
C-xr"]#]  
package org.rut.util.algorithm.support; c&6 I[ R  
1> ?M>vK  
import org.rut.util.algorithm.SortUtil; n>z9K')  
IZf{nQ[0  
/** >[f?vrz  
* @author treeroot , };& tR  
* @since 2006-2-2 'I|v[G$l  
* @version 1.0 j\yjc/m  
*/ XoK:N$\}t  
public class MergeSort implements SortUtil.Sort{ $L `d&$Vh  
'JtBZFq  
/* (non-Javadoc) >\R+9p:o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TT%M' 5&  
*/ _IMW {  
public void sort(int[] data) { e v}S+!|U  
int[] temp=new int[data.length]; Brw@g8w-X  
mergeSort(data,temp,0,data.length-1); t}a: p6D]  
} H.P_]3f  
#&+{mCjs  
private void mergeSort(int[] data,int[] temp,int l,int r){ T}Tp$.gB  
int mid=(l+r)/2; 3=#<X-);  
if(l==r) return ; E#RDqL*J  
mergeSort(data,temp,l,mid); xH4m|  
mergeSort(data,temp,mid+1,r);  y`iBFC;_  
for(int i=l;i<=r;i++){ q~Hn -5H4Q  
temp=data; Xxj- 6i  
} 8bGd} (  
int i1=l; %X]jaX 7  
int i2=mid+1; thh. A  
for(int cur=l;cur<=r;cur++){ R>|{N9  
if(i1==mid+1) Ng&%o  
data[cur]=temp[i2++]; - nm"of\o  
else if(i2>r) F~ty!(c  
data[cur]=temp[i1++]; 4(n-_BS  
else if(temp[i1] data[cur]=temp[i1++]; Vsr.=Nd=  
else 1NFsb-<u  
data[cur]=temp[i2++]; J6"9v;V  
} -]Bq|qTH[(  
} >tS'Q`R  
*][`@@->  
} J`Q>3] wL  
$GV7o{"&  
改进后的归并排序: 'ycJMYP8  
p>,|50|  
package org.rut.util.algorithm.support; \<h0Q,e  
-/B+T>[nTb  
import org.rut.util.algorithm.SortUtil; Z3e| UAif  
uh_RGM&  
/** *tFHM &a  
* @author treeroot "s-"<&>a(  
* @since 2006-2-2 a~`eQ_N D  
* @version 1.0 k8yEdi`  
*/ Eh`7X=Z7E  
public class ImprovedMergeSort implements SortUtil.Sort { Ufj`euY  
m,28u3@r  
private static final int THRESHOLD = 10; ;]puq  
Y|m +dT6  
/* j3oV+zZ49  
* (non-Javadoc) \&:nFb%=  
* l9~e". ~'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h8j.(  
*/ B4/>H|  
public void sort(int[] data) { $p8xEcQdU#  
int[] temp=new int[data.length]; jdP2Pf^^  
mergeSort(data,temp,0,data.length-1); @ y.?:7I  
} >{ ]%F*p4  
h^45,E C  
private void mergeSort(int[] data, int[] temp, int l, int r) { [^n.Pns  
int i, j, k; D8Ic?:iX[  
int mid = (l + r) / 2; dbLZc$vPj  
if (l == r) >=lC4Tu  
return; YDsb3X<0'  
if ((mid - l) >= THRESHOLD) ;V_e>TyG  
mergeSort(data, temp, l, mid); GAzU?a{S  
else H'5)UX@LP  
insertSort(data, l, mid - l + 1); eIF5ZPSZi  
if ((r - mid) > THRESHOLD) ?,Xw[pR  
mergeSort(data, temp, mid + 1, r); je-!4r,  
else y1D L,%j  
insertSort(data, mid + 1, r - mid); B IEO,W|  
+480 l}  
for (i = l; i <= mid; i++) { ,pfG  
temp = data; M^Yh|%M  
} ja'T+!k  
for (j = 1; j <= r - mid; j++) { CkC^'V)  
temp[r - j + 1] = data[j + mid]; Po;W'7"Po`  
} "Y.tht H  
int a = temp[l]; !TH) +zi  
int b = temp[r]; Kn{4;Xk\  
for (i = l, j = r, k = l; k <= r; k++) { _ye |Y  
if (a < b) { XX!%RE`M8  
data[k] = temp[i++]; q$UJ$ 7=f8  
a = temp; 6v!`1} ~  
} else { =?* !"&h  
data[k] = temp[j--]; "cGk)s  
b = temp[j]; N% B>M7-=  
} wu6;.xTLl  
} 8rGgF]F  
} g-k|>-h  
nAato\mM  
/** j_[tu!~  
* @param data +E+p"7  
* @param l rKc9b<Ir  
* @param i s^TZXCyF o  
*/ \K{ z  
private void insertSort(int[] data, int start, int len) { ]c*4J\s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qZh/IW  
} aK~8B_5k8  
} 8`{:MkXP  
} (m}'4et~L  
} a!SiX  
pF>i-i  
堆排序: }&D WaO]J7  
{WS;dX4  
package org.rut.util.algorithm.support; uMv,zO5  
bWS&Yk(  
import org.rut.util.algorithm.SortUtil; FxY}m  
CxmKz78  
/** :Ov6_x]*  
* @author treeroot z6P$pqyF  
* @since 2006-2-2 *a^(vo   
* @version 1.0 B mb0cF Q  
*/ V &T~zh1  
public class HeapSort implements SortUtil.Sort{ MJ)RvNF  
aO[w/cGQ  
/* (non-Javadoc) On?v|10r'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&zilVVm  
*/ Oo~; L,  
public void sort(int[] data) { W*:.Gxv]  
MaxHeap h=new MaxHeap(); 6_;icpN]  
h.init(data); MchA{p&Ol  
for(int i=0;i h.remove(); h" W,WxL8  
System.arraycopy(h.queue,1,data,0,data.length); A{zN | S[  
} (mB&m@-N  
2pCaX\t  
private static class MaxHeap{ %2{ye  
Q{>k1$fkV  
void init(int[] data){ T763:v  
this.queue=new int[data.length+1]; ?j.,Nw4FC  
for(int i=0;i queue[++size]=data; {YC@T(  
fixUp(size); ]/6z; ~3U  
} Ix}sK"}[n  
} e`s ~.ZF  
4J? 0bZ  
private int size=0; G_JA-@i%  
372rbY  
private int[] queue; TX/Xt7#R:  
,p a {qne  
public int get() { 'Is kWgc  
return queue[1]; y^ *~B(T{  
} %;' s4ly  
.{^5X)  
public void remove() { ^\% (,KNo  
SortUtil.swap(queue,1,size--); 8,%^ M9zBP  
fixDown(1); 2,F .$X  
} ;(%QD 3>  
file://fixdown Ax@$+/Z!  
private void fixDown(int k) { ~~P5k:  
int j; J;e2&gB  
while ((j = k << 1) <= size) { C) s5D  
if (j < size %26amp;%26amp; queue[j] j++; 0+ '&`Q!u  
if (queue[k]>queue[j]) file://不用交换 j (d~aqW  
break; "k@/ 3  
SortUtil.swap(queue,j,k); \)[j_^  
k = j; & .j&0WE  
} ^ytrK Q  
} JbbzV>  
private void fixUp(int k) { "sCRdx]_  
while (k > 1) { xo&_bMO  
int j = k >> 1; ^ @5QP$.  
if (queue[j]>queue[k]) V!=,0zy~Z  
break; *&W"bOMH*  
SortUtil.swap(queue,j,k); A)!*]o>U  
k = j; x,- 75  
} ioCsV  
} /SB;Von  
jr. "I+  
} G` A4|+W"  
+'a^f5  
} m0SlOgRsk  
d0ks G$  
SortUtil: /~?*=}c^m  
A/s?x>QA  
package org.rut.util.algorithm; {\5  
L2z[   
import org.rut.util.algorithm.support.BubbleSort; SnfYT)Ph  
import org.rut.util.algorithm.support.HeapSort; 4VSU8tK|N]  
import org.rut.util.algorithm.support.ImprovedMergeSort; Sm|6 %3  
import org.rut.util.algorithm.support.ImprovedQuickSort; VA5xp]  
import org.rut.util.algorithm.support.InsertSort; CCx&7f  
import org.rut.util.algorithm.support.MergeSort; 9A=,E&  
import org.rut.util.algorithm.support.QuickSort; 4HlQ&2O%#  
import org.rut.util.algorithm.support.SelectionSort; M2Qr(K|  
import org.rut.util.algorithm.support.ShellSort; D@.6>:;il  
0e4{{zQx  
/** }Y\%RA  
* @author treeroot EQM {  
* @since 2006-2-2 T8g$uFo  
* @version 1.0 i.m^/0!  
*/ 5;EvNu  
public class SortUtil { ,O(hMI85]  
public final static int INSERT = 1; =,M5KDk`  
public final static int BUBBLE = 2; *] X'( /b_  
public final static int SELECTION = 3; lo+A%\1  
public final static int SHELL = 4; :F?C)F  
public final static int QUICK = 5; %h@EP[\  
public final static int IMPROVED_QUICK = 6; &8lZNv8;(p  
public final static int MERGE = 7; e"<OELA  
public final static int IMPROVED_MERGE = 8; VPo".BvG6  
public final static int HEAP = 9; ,z jv7$L  
":ue-=&M  
public static void sort(int[] data) { {wKB;?fUvk  
sort(data, IMPROVED_QUICK); {<KVx9  
} ?caSb =f  
private static String[] name={ [W&T(%(W-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4r}51 N\  
}; ?@86P|19  
%ET+iIhK  
private static Sort[] impl=new Sort[]{ g 7H(PF?  
new InsertSort(), Z T%5T}i  
new BubbleSort(), /N{*"s2)  
new SelectionSort(), (LCfUI6;  
new ShellSort(), })%{AfDRF  
new QuickSort(), JZ x[W&]zT  
new ImprovedQuickSort(), upmx $H>  
new MergeSort(), mfr|:i  
new ImprovedMergeSort(), z{QqY.Gu{G  
new HeapSort() ~"!fP3"e  
}; B@ EC5Ap*  
Z`i(qCAd(  
public static String toString(int algorithm){ %N._w!N<5n  
return name[algorithm-1]; 'g\4O3&_  
} L4W5EO$  
6=C<>c %+  
public static void sort(int[] data, int algorithm) { tw@X> G1z  
impl[algorithm-1].sort(data); PJ#,2=n~  
} ~n_HP_Kf?  
He@KV=  
public static interface Sort { '&b+R`g'  
public void sort(int[] data); jH:[2N?  
} f o3}W^0  
;uGv:$([g  
public static void swap(int[] data, int i, int j) { :3 mh@[V  
int temp = data; +}AI@+  
data = data[j]; "AqB$^S9t  
data[j] = temp; 8oGRLYU N  
} 2 %]X+`+O  
} AbM'3Mkz  
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