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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。 =XbOY[  
插入排序: N i\*<:_  
3"9'MDKH  
package org.rut.util.algorithm.support; GP|G[  
ur*@TIvD  
import org.rut.util.algorithm.SortUtil; (`nn\)  
/** 35>VCjCw0  
* @author treeroot Ro1b (+H  
* @since 2006-2-2 dG {D2~#  
* @version 1.0 9#C hn~ \  
*/ e(t,~(  
public class InsertSort implements SortUtil.Sort{ ~ 8hAmM  
o'uv5asdb  
/* (non-Javadoc) -^a?]`3_v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 60*;a*cy  
*/ #A&(b}#:o  
public void sort(int[] data) { Nw 74T  
int temp; YSQB*FBz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tp4/c'w;)J  
} ~k}>CNTr  
} 4&TTPcSt;  
} !4gyrNS  
UBN^dbP*  
} ~i3/Ec0\  
qhNY<  
冒泡排序: ?uiQ'}   
F% <hng%k  
package org.rut.util.algorithm.support; $]H^?  
Hjho!np  
import org.rut.util.algorithm.SortUtil; y}TiN!M  
{i}z|'!  
/** R[ 'k&jyi  
* @author treeroot JYQ.Y!X1O  
* @since 2006-2-2 7x,c)QES`  
* @version 1.0 67916  
*/ )qi/>GR,  
public class BubbleSort implements SortUtil.Sort{ *&i SW~s  
[5KzawV  
/* (non-Javadoc) HkH!B.H]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Md]e<WAp  
*/ u2p5* gzZ  
public void sort(int[] data) { ~[E@P1  
int temp; ;a]Lxx;-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }digw(  
if(data[j] SortUtil.swap(data,j,j-1); .Fdqn?c|+  
} Q"2t :  
} _'g'M=E  
} $M `%A  
} iGCA>5UE  
A(!nT=0o  
} /~k)#44  
{|{}]B  
选择排序: >O7ITy  
]{` 8C  
package org.rut.util.algorithm.support; In%K  
W>ZL[BQ  
import org.rut.util.algorithm.SortUtil; C&d%S|:IR  
\dIc_6/D1  
/** !>%U8A  
* @author treeroot OI=LuWGQE1  
* @since 2006-2-2 7.-g=Rcz  
* @version 1.0 ZjlFr(  
*/ cy0 %tsB|  
public class SelectionSort implements SortUtil.Sort { \ow3_^Bk  
u9d4zR  
/* bo;;\>k  
* (non-Javadoc) T);eYC"@  
* pv:7kgod  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V !Cu%4  
*/ z0XH`H|~  
public void sort(int[] data) { pP1|/f5n`  
int temp; X)-9u8  
for (int i = 0; i < data.length; i++) { .I6:iB  
int lowIndex = i; }7`HJ>+m)H  
for (int j = data.length - 1; j > i; j--) { N k~Xz  
if (data[j] < data[lowIndex]) { $Vu %4kq  
lowIndex = j; ]e*Zx;6oi  
} 81O\BO.T  
} u!&w"t61Nd  
SortUtil.swap(data,i,lowIndex); [# X:!xcl  
} ,&wTUS\  
} H(eGqVAq,  
M7$ h  
} Mn<G9KR  
y;0k |C   
Shell排序: 'Gn-8r+  
aWp9K+4R$/  
package org.rut.util.algorithm.support; 4v@urW s  
fx W,S  
import org.rut.util.algorithm.SortUtil; 50s)5G#  
^H0`UKE  
/** fB \+.eN  
* @author treeroot AnB]f~Yjl  
* @since 2006-2-2 9t`Z_HwdCb  
* @version 1.0 MhE'_sq  
*/ 8 *Fr=+KN  
public class ShellSort implements SortUtil.Sort{ @,b:s+]rp  
bzz{ p1e  
/* (non-Javadoc) ^8_`IT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) h*)_7  
*/ x~7_`=}rO  
public void sort(int[] data) { >DHpD?Pm!  
for(int i=data.length/2;i>2;i/=2){ IEi E6z]L(  
for(int j=0;j insertSort(data,j,i); Z*/*P4\  
} amPC C  
} Hk65c0  
insertSort(data,0,1); 6 (:^>@  
} X >i`z  
ZBDEE+8e  
/** (<u3<40[YN  
* @param data N8$MAW  
* @param j /xK5%cE>B  
* @param i c|f)k:Q  
*/ D$sG1*@s-  
private void insertSort(int[] data, int start, int inc) { _}_lrg}U  
int temp; ;$ot,mH?T  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .Yl*kG6r  
} a59l"b  
} lX)RG*FlTC  
} c)N&}hFYC  
=r<0l=  
} \\j98(i  
owYSR?aG  
快速排序: Y0kDHG  
*`}4]OGv.  
package org.rut.util.algorithm.support; 6Y#-5oE u/  
Vrz6<c-'B  
import org.rut.util.algorithm.SortUtil; Q77iMb]  
2>s@2=Aq  
/** YNGG> ;L  
* @author treeroot Ov vM)?^#  
* @since 2006-2-2 >s@6rNgf  
* @version 1.0 Cm4$&?  
*/ HvITw%`  
public class QuickSort implements SortUtil.Sort{ yIS.'mK  
GN36:>VWb  
/* (non-Javadoc) #8 N9@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3@k;"pFa<  
*/ *fBI),bZa  
public void sort(int[] data) { R~-r8dWcw  
quickSort(data,0,data.length-1); "HWl7c3q  
} \wmNeGC2  
private void quickSort(int[] data,int i,int j){ %cM2;a=2  
int pivotIndex=(i+j)/2; X@,xwsM%tb  
file://swap ]jWe']T  
SortUtil.swap(data,pivotIndex,j); !}sYPz]7!  
OL{U^uOhY  
int k=partition(data,i-1,j,data[j]); m6qmZ2<  
SortUtil.swap(data,k,j); 5t$ZEp-  
if((k-i)>1) quickSort(data,i,k-1); }2sc|K^  
if((j-k)>1) quickSort(data,k+1,j); b"Hg4i)  
O5PCR6U  
} AHws5#;$6*  
/** G0sg\]  
* @param data C[j'0@~V:B  
* @param i  T)o)%Yv  
* @param j ;SBM7fwRk  
* @return @Q"%a`mKH  
*/ &hmyfH&S  
private int partition(int[] data, int l, int r,int pivot) { ~lx5RTkp  
do{ C9-90,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {5+t\~q$  
SortUtil.swap(data,l,r); z3IQPl^  
} aX=  
while(l SortUtil.swap(data,l,r); uJ S+;H  
return l; jW6~^>S  
} q#v&&]N=  
Sd]`I)  
} xUYUOyV  
Pnb?NVP!^9  
改进后的快速排序: Y(WX`\M97  
f1Ruaz-  
package org.rut.util.algorithm.support; cad%:%p  
NpRT\cx3  
import org.rut.util.algorithm.SortUtil; /*Z ,i&eC  
xbex6i"ZE  
/** )j6VROt  
* @author treeroot @].Ko[P~  
* @since 2006-2-2 ]R^?Pa1Te4  
* @version 1.0 }U$Yiv  
*/ I;`)1   
public class ImprovedQuickSort implements SortUtil.Sort { 2Y&QJon)  
4ze-N8<[  
private static int MAX_STACK_SIZE=4096; =K#D^c~  
private static int THRESHOLD=10; d+KLtvB%M  
/* (non-Javadoc) ^s25z=^t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9:^SnHAa  
*/ rj"oz"  
public void sort(int[] data) { Y_&D W4  
int[] stack=new int[MAX_STACK_SIZE]; z JWh  
(o_wv  
int top=-1; wVCZ=\L}  
int pivot; Lwgk}!KR  
int pivotIndex,l,r; &?(r# T  
YPAMf&jEF  
stack[++top]=0; >^%]F[Wo  
stack[++top]=data.length-1; tP2hU[7Z  
>Pv#)qtm  
while(top>0){ #RoGyrLo  
int j=stack[top--]; rlYAy5&  
int i=stack[top--]; Q4 Mp[  
T78`~-D4<  
pivotIndex=(i+j)/2; l]whL1N3  
pivot=data[pivotIndex]; TD+V.}  
2<Pi2s'  
SortUtil.swap(data,pivotIndex,j); $b;9oST  
}p0|.Qu9  
file://partition W:{1R&$l  
l=i-1; = >)S\Dfi  
r=j; a4FvQH#j  
do{ kS[xwbE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .63:G<  
SortUtil.swap(data,l,r); 5haJPWG|'  
} C|c'V-f  
while(l SortUtil.swap(data,l,r); d^X;XVAvP  
SortUtil.swap(data,l,j); UJ1Ui'a(!!  
D0,U2d  
if((l-i)>THRESHOLD){ &eq>>  
stack[++top]=i; v\ggFrG]  
stack[++top]=l-1; RKaCX:  
} '7Dg+a^x7  
if((j-l)>THRESHOLD){ P?*$Wf,~n  
stack[++top]=l+1; epi{Ayb  
stack[++top]=j; *M;!{)m?  
} fB[I1Z  
uWR\#D'  
} l)`bm/k]V  
file://new InsertSort().sort(data); y4s]*?Wz  
insertSort(data); 1]#qxjZ~  
} ]O s!=rt  
/** ),5^bl/  
* @param data |cL'4I>b9  
*/ tF SO"  
private void insertSort(int[] data) { %..{c#V  
int temp; LBT{I)-K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R[5*]$(b  
} A:F*Y%ZW  
} # )-Kf  
} 6sBS;+C  
aoQK.7  
} m\|I.BUG  
EY;C5P4  
归并排序: yWsV !Ub  
1Qui.],c  
package org.rut.util.algorithm.support; PiXegh WH  
kL,bM.;  
import org.rut.util.algorithm.SortUtil; x/47e8/  
GQ ZEMy7  
/** x2+%.$'  
* @author treeroot HMJx[ yD  
* @since 2006-2-2 Z8tQ#Pu{  
* @version 1.0 4AB7uw  
*/ )~;=0O |X  
public class MergeSort implements SortUtil.Sort{ W}V L3s  
T(K~be  
/* (non-Javadoc) ?B@(W(I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z8+{ -  
*/ ^Fgmwa'  
public void sort(int[] data) { ZWaHG_ U)  
int[] temp=new int[data.length]; .)|r!X  
mergeSort(data,temp,0,data.length-1); .]g>.  
} ^il'Q_-{  
(1gfb*L  
private void mergeSort(int[] data,int[] temp,int l,int r){ eAS~>|N#x  
int mid=(l+r)/2; x9R_KLN:;  
if(l==r) return ; F,EcqM'f  
mergeSort(data,temp,l,mid); A~&Tp  
mergeSort(data,temp,mid+1,r); sG*1?  
for(int i=l;i<=r;i++){ 6j@3C`Yd  
temp=data; "P`V|g  
} MHmaut#  
int i1=l; :Lqz`  
int i2=mid+1; `|e?91@vEa  
for(int cur=l;cur<=r;cur++){ Bh?K_{e  
if(i1==mid+1) i6M_Gk}  
data[cur]=temp[i2++]; Au,xIe!t  
else if(i2>r) j@$p(P$  
data[cur]=temp[i1++]; cx M=#Go  
else if(temp[i1] data[cur]=temp[i1++]; $]EG|]"Ns  
else 6f/>o$  
data[cur]=temp[i2++]; |k3ZdM  
} Q-fi(UP  
} 8?!=/Sc  
o%X@Bz  
} :a#Mq9ph!  
H Yt& MK  
改进后的归并排序: >u#c\s  
Tq[=&J  
package org.rut.util.algorithm.support; 8xzEbRNJ)  
thcj_BZ8  
import org.rut.util.algorithm.SortUtil; YpMQY-n  
&NiDv   
/** Q]Q]kj2  
* @author treeroot VqV6)6   
* @since 2006-2-2 3\WLm4  
* @version 1.0 ]+x;tP o  
*/ 26un=  
public class ImprovedMergeSort implements SortUtil.Sort { 0@z=0}0Z  
w%;Z`Xn&u  
private static final int THRESHOLD = 10; ORk8^0\  
p>7 !"RF:U  
/* *#{[9d  
* (non-Javadoc) CJ0j2e/  
* ';4DUh p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '|Dm\cy  
*/ VXlTA>a }  
public void sort(int[] data) { bSsX)wHm  
int[] temp=new int[data.length]; ;i?Ao:]  
mergeSort(data,temp,0,data.length-1); ?XO$ 9J  
} ~Q%C>  
#?L%M  
private void mergeSort(int[] data, int[] temp, int l, int r) { }8J77[>/  
int i, j, k;  N)G.^9  
int mid = (l + r) / 2; 3D70`u  
if (l == r) 94Mh/A9k  
return; 6n 37R#(  
if ((mid - l) >= THRESHOLD) SFAh(+t  
mergeSort(data, temp, l, mid); e 5U<nf  
else ] )D\ws)a9  
insertSort(data, l, mid - l + 1); M6U/. n  
if ((r - mid) > THRESHOLD) :c%vl$  
mergeSort(data, temp, mid + 1, r); 0p\R@{  
else }2 zJ8A9-  
insertSort(data, mid + 1, r - mid); . OA_)J7  
(wLzkV/6  
for (i = l; i <= mid; i++) { j;@7V4'  
temp = data; yEL^Y'x?  
} mwLp~z%OX  
for (j = 1; j <= r - mid; j++) { #"% ]1={b  
temp[r - j + 1] = data[j + mid]; +o})Cs`|=A  
} Cc^`M9dP  
int a = temp[l]; v{9< ATi  
int b = temp[r]; .n]P6t  
for (i = l, j = r, k = l; k <= r; k++) { J/Ki]T9  
if (a < b) { )? WiO}"  
data[k] = temp[i++]; v`8dRVN  
a = temp; *fVs|  
} else { =B O} hk  
data[k] = temp[j--]; UV8,SSDTV  
b = temp[j]; bAv>?Xqa  
} 1!<k-vt  
} bj^YB,iSM  
} r J'm>&Ps  
Qk?;nF  
/** +FiM?,G  
* @param data |pk1pV |  
* @param l RMU]GCa  
* @param i [|<2BQX  
*/ ':6!f  
private void insertSort(int[] data, int start, int len) { g@]G [(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FaO=<jYi  
} HVG9 C$  
} ;\yY*  
} > E;`;b  
} Wi]Mp7b  
]0<T,m Z  
堆排序: sLh9= Kh`  
BhC.#u/   
package org.rut.util.algorithm.support; Enr8"+.(  
vB >7W  
import org.rut.util.algorithm.SortUtil; i_8q!CL@{  
A9^t$Ii  
/** bQc-ryC+.  
* @author treeroot EJ&[I%jU  
* @since 2006-2-2 X=]FVHV;  
* @version 1.0 )+T\LU  
*/ 'P(S*sr  
public class HeapSort implements SortUtil.Sort{ 6c-y<J+&s  
~*R"WiDtI  
/* (non-Javadoc) $rFLhp}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GQ~wx1jj1  
*/ L2:v#c()#)  
public void sort(int[] data) { _IiTB  
MaxHeap h=new MaxHeap(); {p&M(W]  
h.init(data); *cn,[  
for(int i=0;i h.remove(); ],{b&\  
System.arraycopy(h.queue,1,data,0,data.length); !C>}j* 4  
} =jZ}@L/+  
Y(QLlJ*)/  
private static class MaxHeap{ Ia-`x/r*m  
E'qGKT  
void init(int[] data){ >g8H  
this.queue=new int[data.length+1]; D.?Rc'y D  
for(int i=0;i queue[++size]=data; ~_^#/BnAl  
fixUp(size); k fS44NV  
} 0 =#)-n  
} h6c0BmS{1  
t3%[C;@wB  
private int size=0; & yFS  
 meQ>mW  
private int[] queue; }& ;49k  
(izGF;N+  
public int get() { RB7?T5G  
return queue[1]; 92g#QZs&W  
} ?g*#l d()  
3B|?{U~  
public void remove() { s"5f5Cn/Wh  
SortUtil.swap(queue,1,size--); Xk=bb267  
fixDown(1); ]A)`I  
} kGbtZ} W  
file://fixdown &c<0g`x  
private void fixDown(int k) { a?#v,4t^  
int j; !qe ,&JL  
while ((j = k << 1) <= size) { !.>TF+]  
if (j < size %26amp;%26amp; queue[j] j++; QRb iO  
if (queue[k]>queue[j]) file://不用交换 PYWp2V/  
break; X1Vx 6+[  
SortUtil.swap(queue,j,k); \%Wu`SlDp9  
k = j; 5&V0(LT]C  
} R7YL I1ov  
} (3kz(6S  
private void fixUp(int k) { 3(D!]ku~m  
while (k > 1) { KG:CVIW Y  
int j = k >> 1; rXR=fj= 2  
if (queue[j]>queue[k]) WN8XiV  
break; ,m<t/@^]  
SortUtil.swap(queue,j,k); yhF{ cK =  
k = j; yu8xTh$:  
} k@QU<cvI  
} V 2-fJ!  
_?]E)i'RI  
} w7d(|`  
CMk0(sztU_  
} 2xy &mNx  
?V6A:8t,  
SortUtil: V'[Lqe,y  
]z5`!e)L  
package org.rut.util.algorithm; Lo"w,p`n@  
AWkXW l}  
import org.rut.util.algorithm.support.BubbleSort; dN'2;X  
import org.rut.util.algorithm.support.HeapSort; $#q:\yQsPC  
import org.rut.util.algorithm.support.ImprovedMergeSort; \ZSZ(p#1  
import org.rut.util.algorithm.support.ImprovedQuickSort; q1C) *8*g  
import org.rut.util.algorithm.support.InsertSort; ry bs9:_}  
import org.rut.util.algorithm.support.MergeSort; c s0;:H*N*  
import org.rut.util.algorithm.support.QuickSort; 09FHE/L  
import org.rut.util.algorithm.support.SelectionSort; ,khB*h14;h  
import org.rut.util.algorithm.support.ShellSort; t+C9QXY  
72J@Dc  
/** Y`$dtg {  
* @author treeroot A UCk]  
* @since 2006-2-2 !*Hgl\t6a  
* @version 1.0 M=vRy|TL  
*/ 70s.  
public class SortUtil { t;?M#I\,{  
public final static int INSERT = 1; ;+pS-Zb 6  
public final static int BUBBLE = 2; N>8p A)  
public final static int SELECTION = 3; Z4+S4cqnh  
public final static int SHELL = 4; ce3w0UeV  
public final static int QUICK = 5; Z/#l~.o[  
public final static int IMPROVED_QUICK = 6; )a:j_jy  
public final static int MERGE = 7; _ U/[n\oC  
public final static int IMPROVED_MERGE = 8; Skm$:`u;  
public final static int HEAP = 9; Ur^~fW1 o  
j SLC L'  
public static void sort(int[] data) { y*i_Ec\h  
sort(data, IMPROVED_QUICK); Ln~Z_!  
} GTvp)^ h  
private static String[] name={ $"V gN ynq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O3H~|R+^  
}; *dB^B5  
Wz}DC7  
private static Sort[] impl=new Sort[]{ Dw\)!,,i7U  
new InsertSort(), gWlv;oq  
new BubbleSort(), mc{gcZIm  
new SelectionSort(), cRt[{ HE  
new ShellSort(), )"Ef* /+  
new QuickSort(), kJ^)7_3  
new ImprovedQuickSort(), mM*jdm(!  
new MergeSort(), cT8b$P5w  
new ImprovedMergeSort(), R4xoc;b  
new HeapSort() rLt`=bl&&U  
}; ED9uKp<Wbv  
r3~~4Q4XI>  
public static String toString(int algorithm){ #9HQW:On  
return name[algorithm-1]; s06tCwPp  
} 3_%lN4sz  
wW5:p]<Y  
public static void sort(int[] data, int algorithm) { Jptzc:~B  
impl[algorithm-1].sort(data); B.:DW3  
} dy>iIc>  
RL0#WBR  
public static interface Sort { 8#NI`s*  
public void sort(int[] data); qx#k()E.U  
} oH;0_!  
o: \&4z&=  
public static void swap(int[] data, int i, int j) { al{;]>W  
int temp = data; V1aWVLltj  
data = data[j]; TDvUiJm  
data[j] = temp; 41\r7 BS  
} j/I^\Ms  
} *hJ&7w ~  
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