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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。 Y[}>CYO  
插入排序: svcK?^ HTe  
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package org.rut.util.algorithm.support; I 8`VNA&b  
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import org.rut.util.algorithm.SortUtil; gd`!tRcNY  
/** i@"@9n~  
* @author treeroot M_/7D|xl/T  
* @since 2006-2-2 QI'Oz{vE  
* @version 1.0 Vt:~q{9*k  
*/ iT gt}]L  
public class InsertSort implements SortUtil.Sort{ OR~8sU  
P3+5?.p.  
/* (non-Javadoc) 4%>$-($  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ `~Ly-  
*/ }v}P .P  
public void sort(int[] data) { >UiYL}'br6  
int temp; ^ *k?pJ5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rWa2pO  
} !Qu"BF   
} 9PXFRxGA  
} N8F~8lTi  
IP xiV]c  
} r*2+xDoEi  
)r xX+k+b/  
冒泡排序: K*K,}W&}  
D#cyOrzy  
package org.rut.util.algorithm.support; u8&Z!p\  
lb4Pcd j  
import org.rut.util.algorithm.SortUtil; tkeoNuAM  
ZxGJzakB5$  
/** %Nlt H/I  
* @author treeroot M?Y;a5{  
* @since 2006-2-2 6F!+T=  
* @version 1.0 xpV|\2C  
*/ 4&<oFW\r  
public class BubbleSort implements SortUtil.Sort{ i [7\[  
^}/PGG\~r  
/* (non-Javadoc) =Y{(%sn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <\r T%f}3^  
*/ UZ\u;/}  
public void sort(int[] data) { \A 2r]  
int temp; K[YI4pt7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ kCWV r  
if(data[j] SortUtil.swap(data,j,j-1); YxYH2*q@  
} y-'$(x  
} :~"CuB/  
} g:g\>@Umo  
} FH?U(-  
\)#kquH/l  
} at#ja_ hd  
?~BC#B\>o  
选择排序: Gw/Pk4R  
I0D(F i  
package org.rut.util.algorithm.support;  eI$oLl@  
_mqL8ho  
import org.rut.util.algorithm.SortUtil; 2V mNZ{<  
LO9=xGj.  
/** cLpYW7vZ[  
* @author treeroot Z]>O+  
* @since 2006-2-2 |mxDjgq  
* @version 1.0 o[Q MTP  
*/ XKj|f`  
public class SelectionSort implements SortUtil.Sort { 3 oF45`3FV  
BTqS'NuT  
/* ! `   
* (non-Javadoc) _C%3h5  
* Ta ZmRL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !"?#6-,Xn  
*/ hgYZOwQ  
public void sort(int[] data) { 0fb2;&pUa  
int temp; ^S4d:-.3  
for (int i = 0; i < data.length; i++) { b[r8 e  
int lowIndex = i; PCHu #5j_a  
for (int j = data.length - 1; j > i; j--) { w1Nm&}V  
if (data[j] < data[lowIndex]) { g0xuxK;9c  
lowIndex = j; "h{q#~s  
} hO\<%0F  
} .F4>p=r  
SortUtil.swap(data,i,lowIndex); GFj{K  
} cM(:xv  
} OcR$zlgs[v  
CpUk Cgg  
} [\^ n=  
x[FJgI'r  
Shell排序: lHN5Dr  
B nFwlw  
package org.rut.util.algorithm.support; 1{)5<!9!l  
K[I=6  
import org.rut.util.algorithm.SortUtil; =Gpylj7?~  
5kc/Y/4o  
/** f',Op1o  
* @author treeroot \j@OZ   
* @since 2006-2-2 1!xQ=DU"  
* @version 1.0 6dq(T_eG  
*/ ne>pOK<vZ  
public class ShellSort implements SortUtil.Sort{ Nyku4r0  
l5S aT,%  
/* (non-Javadoc) )Kc<j!8-[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $SlIr<'*"  
*/ %f&/E"M  
public void sort(int[] data) { Z^bQ^zk-  
for(int i=data.length/2;i>2;i/=2){ ,;EIh}  
for(int j=0;j insertSort(data,j,i);  :|>h7v  
} v,FU^f-'  
} 0M_ DB=  
insertSort(data,0,1); h{)kQLuzT  
} #3i3G(mQ  
[;n9:Qxf  
/** +F R0(T  
* @param data q$0*b]=E  
* @param j Mo|;'+  
* @param i k0OYJ/  
*/ |U:k,YH  
private void insertSort(int[] data, int start, int inc) { r<9Iof4  
int temp; j@n)kPo,1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k$4y9{  
} f}o\*|k_|  
} td(li.,  
} {DV_* 5  
A=$04<nP8!  
} 0z`a1 %U  
0!4Ts3qn1  
快速排序: LK{*sHi$  
sQYkQ81  
package org.rut.util.algorithm.support; :tz#v`3o  
*z5.vtfu!  
import org.rut.util.algorithm.SortUtil; 3lf=b~Zi)  
Zd3S:),&  
/** 2Z+Wu3#  
* @author treeroot xs{3pkTYD  
* @since 2006-2-2 p2hB8zL  
* @version 1.0 =mO vs  
*/ GA$V0YQX  
public class QuickSort implements SortUtil.Sort{ .T}Wdn g  
QVv#fy1"6  
/* (non-Javadoc) Q 1U\D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h=W:^@G  
*/ %:M ^4~dc  
public void sort(int[] data) { Ow+GS{-q  
quickSort(data,0,data.length-1); LD+{o4i  
} 216RiSr*  
private void quickSort(int[] data,int i,int j){ iW)8j 8  
int pivotIndex=(i+j)/2; n4O]8C'lW9  
file://swap y%&q/tk  
SortUtil.swap(data,pivotIndex,j); 35h 8O,Y  
'F/~o1\.  
int k=partition(data,i-1,j,data[j]); 5VfyU8)7X  
SortUtil.swap(data,k,j); {0L1X6eg  
if((k-i)>1) quickSort(data,i,k-1);  `xKp%9  
if((j-k)>1) quickSort(data,k+1,j); T.])diuvj-  
YX!{P=Ua  
} n7zm>&  
/** hwPw]Ln/  
* @param data %41m~Wh2  
* @param i @D]5civm_  
* @param j ^ sOQi6pL  
* @return =J18eH!]  
*/ qSM|hHDo)  
private int partition(int[] data, int l, int r,int pivot) { cutuDZ  
do{ {AhthR%(1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  U'k*_g  
SortUtil.swap(data,l,r); 6]&OrS[  
} TEP,Dq  
while(l SortUtil.swap(data,l,r); TtJH7  
return l; 9)h"-H;5:  
}  Fe#  1  
9>= ;FY  
} 9"N~yKa`"K  
+G$4pt|=  
改进后的快速排序: >f|||H}Snw  
Ryl:a\  
package org.rut.util.algorithm.support; "SNn^p59k  
|'e^QpU5  
import org.rut.util.algorithm.SortUtil; ^-TE([bW  
l#g\X'bK  
/** WO7z  
* @author treeroot )!3V/`I  
* @since 2006-2-2 /}((l%UE.  
* @version 1.0 u0}vWkn\4  
*/ L 8c0lx}Nn  
public class ImprovedQuickSort implements SortUtil.Sort { B |5]Jm]  
kGH}[w  
private static int MAX_STACK_SIZE=4096; 1NbG>E#Ol  
private static int THRESHOLD=10; R6 y#S&]x  
/* (non-Javadoc) %2}-2}[>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ADz ^\  
*/ D.r<QO~6B  
public void sort(int[] data) { 2+RUTOv/d  
int[] stack=new int[MAX_STACK_SIZE]; VRVO-Sk  
.H escg/S  
int top=-1; Rm2yPuOU}A  
int pivot; ~G)S   
int pivotIndex,l,r; [xK3F+  
B+$%*%b  
stack[++top]=0; E7WK (  
stack[++top]=data.length-1; >Ifr [  
I:E`PZ  
while(top>0){ C+* d8_L  
int j=stack[top--]; B~?*?Z'  
int i=stack[top--]; EZgq ?l~5O  
cF\;_0u  
pivotIndex=(i+j)/2; 5u,{6  
pivot=data[pivotIndex]; C0sX gM  
Vouvr<43o  
SortUtil.swap(data,pivotIndex,j); 2VPdw@"~}  
*zaQx+L  
file://partition p99 ]  
l=i-1; kPKB|kP\  
r=j; `A,-@`p  
do{ \J4L:.`qS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rbul8(1h  
SortUtil.swap(data,l,r); Z@yW bjE7Z  
} ]dF ,:8  
while(l SortUtil.swap(data,l,r); 9G9t" {  
SortUtil.swap(data,l,j); ?L x24*5%  
.zr-:L5{  
if((l-i)>THRESHOLD){ d}OTO10  
stack[++top]=i; , xw#NG6  
stack[++top]=l-1; kT|dUw9G  
} \9.bt:k@OT  
if((j-l)>THRESHOLD){ ru'F6?d  
stack[++top]=l+1; m1j*mtu  
stack[++top]=j; QpF;:YX^3  
} R$EW4]j  
2d>z1%'  
} H(H<z,$}T  
file://new InsertSort().sort(data); I^* Nqqq  
insertSort(data); 0!D4pvlt  
} >|J`s~?  
/** \0A3]l  
* @param data ]q\b,)4 e  
*/ <c*FCblv  
private void insertSort(int[] data) { 4aug{}h("  
int temp; w3N[9w?1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0}<|7?  
} 3t.l5m Rg5  
} BfXgh'Z~  
} K> %Tq  
0q^>ZF-@  
} x!hh"x  
_PPy44r2  
归并排序: jY  &k  
uY0lR:|  
package org.rut.util.algorithm.support; T!uM+6|Y  
Lk|hQ  
import org.rut.util.algorithm.SortUtil; !zBhbmlKt  
Plc-4y1  
/** 1&\0:vA^Y  
* @author treeroot ;[(oaK@+n  
* @since 2006-2-2 |O3q@  
* @version 1.0 8aZ=?_gvT  
*/ V[mT<Lc  
public class MergeSort implements SortUtil.Sort{ 2v:]tj  
P i=+/}  
/* (non-Javadoc) @<,X0S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x-XD.qh7Hr  
*/ $5 >e  
public void sort(int[] data) { },uF 4M.K  
int[] temp=new int[data.length]; %]\kgRr  
mergeSort(data,temp,0,data.length-1); #+JG(^%B  
} {GvJZ!,RCg  
SfA\}@3  
private void mergeSort(int[] data,int[] temp,int l,int r){ \ S_Ou   
int mid=(l+r)/2; x;w6na  
if(l==r) return ; CJtcn_.F  
mergeSort(data,temp,l,mid); G `+T+  
mergeSort(data,temp,mid+1,r); A4Rug\p]  
for(int i=l;i<=r;i++){ #HYr0Tw6`  
temp=data; 2{D{sa  
} Id*Ce2B  
int i1=l; PYQ;``~x  
int i2=mid+1;  JR'  
for(int cur=l;cur<=r;cur++){ q~ tz? T_  
if(i1==mid+1) 88Ey12$  
data[cur]=temp[i2++]; 8."]//V  
else if(i2>r) xP_cQwm`1  
data[cur]=temp[i1++]; a@8v^G  
else if(temp[i1] data[cur]=temp[i1++]; AW%50V  
else [<7@{;r  
data[cur]=temp[i2++]; 0mpX)S  
} #akpXdXs  
} "33Fv9C#bK  
0Vj4+2?L5;  
} D{!6Y*d6&s  
'QJ:`)z  
改进后的归并排序: 90Pl$#cb2  
dMPc:tJT  
package org.rut.util.algorithm.support; ,Z aRy$?  
{SOr#{1z*  
import org.rut.util.algorithm.SortUtil; <5d ~P/,  
FO+Zue.RS  
/** `-.%^eIp  
* @author treeroot svsqg{9z  
* @since 2006-2-2 -#7'r<I9@  
* @version 1.0 LuNc, n%  
*/ ~Io7]  
public class ImprovedMergeSort implements SortUtil.Sort { j_/>A=OD  
*lYVY) L  
private static final int THRESHOLD = 10; '>NCMB{*  
7jxslI&F  
/* RW|`nL  
* (non-Javadoc) 9"NF/)_  
* yZ @"\Z!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m];]7uB5=  
*/ ,ly\Ka?zO  
public void sort(int[] data) { =FlDb 5t{  
int[] temp=new int[data.length]; Z|%_&M  
mergeSort(data,temp,0,data.length-1); O $LfuL  
} rTM}})81  
>i_ 2OV  
private void mergeSort(int[] data, int[] temp, int l, int r) { j@=%_^:i  
int i, j, k; R}'bP  
int mid = (l + r) / 2;  R(!s  
if (l == r) UXeN8  
return; B+Rm>^CBm  
if ((mid - l) >= THRESHOLD) ^tqzq0  
mergeSort(data, temp, l, mid); @u.58H& }R  
else WeJl4wF  
insertSort(data, l, mid - l + 1); ` w=>I  
if ((r - mid) > THRESHOLD)  >d*iD  
mergeSort(data, temp, mid + 1, r); ^b/ Z)3  
else ?iPC*  
insertSort(data, mid + 1, r - mid); I*%-cA%l  
G(Lzf(  
for (i = l; i <= mid; i++) { o#;b  
temp = data; t,QyfN  
} DD7h^-x  
for (j = 1; j <= r - mid; j++) { $g@=Z"  
temp[r - j + 1] = data[j + mid]; IW>T}@ |  
} ;t'5},(FP  
int a = temp[l]; ,qA(\[  
int b = temp[r]; ^.1)};i  
for (i = l, j = r, k = l; k <= r; k++) { ={_C&57N1  
if (a < b) { !\"EFVH  
data[k] = temp[i++]; qUh2hz:  
a = temp; -jW.TT h]  
} else { .Fs7z7?Y  
data[k] = temp[j--]; 2n3W=dF  
b = temp[j]; 0f~C#/[t7  
} :a^t3s  
} E d"h16j?z  
} e 63uLWDT  
4h~iPn'Wl  
/** +$u$<z3Q  
* @param data 'GB. UKlR  
* @param l YbR!+ 0\g  
* @param i +lm{Olm'^  
*/ Fa?~0H/DL  
private void insertSort(int[] data, int start, int len) {  RwKdxK+;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vo`2\R.  
} 05z,b]>l  
} 34z"Pm  
} io _1Y]N  
} -!q :p&c  
K:!"+q  
堆排序: V\{clJ\U  
~s% Md  
package org.rut.util.algorithm.support; q_TR q:&.  
ADS9DiX/  
import org.rut.util.algorithm.SortUtil; OSlvwH%(EE  
M}d_I+  
/** ahuGq'  
* @author treeroot Hcl(3> Jn2  
* @since 2006-2-2 K$>%e36Cc  
* @version 1.0 ->sm+H-*  
*/ ?sab*$wG  
public class HeapSort implements SortUtil.Sort{ 4 K!JQ|9  
oT^{b\XN  
/* (non-Javadoc) LISM ngQ.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ./,/y"x  
*/ JF # # [O  
public void sort(int[] data) { mZk]l5Lc  
MaxHeap h=new MaxHeap(); ,ek_R)&[o  
h.init(data); D6%J\C13`  
for(int i=0;i h.remove(); tro7Di2Q  
System.arraycopy(h.queue,1,data,0,data.length); ?h.wK  
} TX$r `~  
JM=JH 51`  
private static class MaxHeap{ [f)cL6AeF  
\!>3SKs(e  
void init(int[] data){ *#E F sUw  
this.queue=new int[data.length+1]; cU;iUf  
for(int i=0;i queue[++size]=data; }M1`di4e  
fixUp(size); '3_]Gu-D  
} |y&*MTfV4L  
} Z8zmHc"IH  
}x@2]juJ  
private int size=0; u6T+Cg  
18~>ZR  
private int[] queue; qLw{?sH}J/  
#i@;J]x(  
public int get() { _]yn"p  
return queue[1]; HIQ _%L4]  
} 0KYEb%44  
 U mNa[ s  
public void remove() { )T';qm0w  
SortUtil.swap(queue,1,size--); IAYR+c  
fixDown(1); 2HpHxVJ  
} vk+VP 1D  
file://fixdown |rJ=Ksc  
private void fixDown(int k) { t0o`-d(  
int j; =o Xsb  
while ((j = k << 1) <= size) { ZNf6;%oGG  
if (j < size %26amp;%26amp; queue[j] j++; Q o?O:  
if (queue[k]>queue[j]) file://不用交换 6qRx0"qB  
break; H18Tn!RDS  
SortUtil.swap(queue,j,k); d p2F  
k = j; #1`-*.u  
} C 'v+f=  
} \Z]UA&v_  
private void fixUp(int k) { eAXc:222  
while (k > 1) { v\!Be[ ?  
int j = k >> 1; b vS(@  
if (queue[j]>queue[k]) afv~r>q(-  
break; OZx W?wnd  
SortUtil.swap(queue,j,k); )>.&N[v  
k = j; ]e^c=O`$  
} }R1< 0~g  
} s>0't  
T,]7ICF#  
} "B =  
$>GgB`  
} p;._HJ(  
:z4)5= 6M  
SortUtil: q<\,  
3AQZRul  
package org.rut.util.algorithm; 7B b9 t  
vV[eWd.o6M  
import org.rut.util.algorithm.support.BubbleSort; lLp^Gt^}w(  
import org.rut.util.algorithm.support.HeapSort; q[HTnx  
import org.rut.util.algorithm.support.ImprovedMergeSort; lL{ 5SH<Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; t *1u[~=  
import org.rut.util.algorithm.support.InsertSort; 5|l* `J)  
import org.rut.util.algorithm.support.MergeSort; "SzdDY6  
import org.rut.util.algorithm.support.QuickSort; 8S%52W|  
import org.rut.util.algorithm.support.SelectionSort; qp/v^$EA  
import org.rut.util.algorithm.support.ShellSort; BnCbon)  
.C&ktU4  
/** SF&BbjBE0  
* @author treeroot Kz>3 ic$I  
* @since 2006-2-2 gUxP>hB  
* @version 1.0 ? i( %  
*/ ]Bm/eRy"  
public class SortUtil { :X.b}^Z(  
public final static int INSERT = 1; +VCGlr  
public final static int BUBBLE = 2; )#.<]&P}  
public final static int SELECTION = 3; jgbLN/_{  
public final static int SHELL = 4; G>wqt@%r9  
public final static int QUICK = 5; twP,cyR  
public final static int IMPROVED_QUICK = 6; Fb^:V4<T  
public final static int MERGE = 7; RnhL< Ywu  
public final static int IMPROVED_MERGE = 8; }RmU%IYc  
public final static int HEAP = 9; kD*2~Z?;  
Ys@}3\Mc  
public static void sort(int[] data) { an|x$e7|?  
sort(data, IMPROVED_QUICK); p8Q,@ql.  
} HR ;)|j{!  
private static String[] name={ )^4\,u\@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T(e!_VY|m  
}; 3T"j)R_=l  
> `n,S  
private static Sort[] impl=new Sort[]{ m\$\ 09  
new InsertSort(), &m|wH4\  
new BubbleSort(), v1%uxthW  
new SelectionSort(), g{8,Wx,,  
new ShellSort(), 1jN-4&  
new QuickSort(), hg+X(0  
new ImprovedQuickSort(), UG)8D5  
new MergeSort(), QS{1CC9$  
new ImprovedMergeSort(), W0epAGrB  
new HeapSort() 3~}uqaGt  
}; T{Sb^-H#X  
/RHo1  
public static String toString(int algorithm){ TQx.KM>y  
return name[algorithm-1]; oXxCXO,q  
} H2um|6>  
}RHn)}+  
public static void sort(int[] data, int algorithm) { LUC4=kk4   
impl[algorithm-1].sort(data); ^j" .  
} L5#P[cHzz  
E_8\f_%wK  
public static interface Sort { ]@uE #a:[  
public void sort(int[] data); |g #K]v  
} ^go7_y  
:E>HE,1b+  
public static void swap(int[] data, int i, int j) { 8"dv_`ym  
int temp = data; q~3,yyu  
data = data[j]; dl ~%MWAVb  
data[j] = temp; ?gJy3@D  
} 6`]$qSTS  
} A8pIs  
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