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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。 c*5y8k  
插入排序: Z#2AK63/T  
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package org.rut.util.algorithm.support; J?Ed^B-  
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import org.rut.util.algorithm.SortUtil; S%+$  
/** ^KBE2C  
* @author treeroot x/7d!>#;  
* @since 2006-2-2 kLr6j-X  
* @version 1.0 FqvMi:F  
*/ 3eqVY0q  
public class InsertSort implements SortUtil.Sort{ ^/)!)=?  
<`'^rCWI?  
/* (non-Javadoc) x[ sSM:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h-^7cHI}  
*/ 7 Q`'1oE?  
public void sort(int[] data) { ,>DaS(  
int temp; #4?(A[]>H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z_Nw%V4kr  
} f;Iaf#V_  
} _n[4+S*v(  
} cH5@Jam  
]>K02SVT:  
} )2U#<v^  
L$ nFRl&  
冒泡排序: vPVA^UPNV  
97$1na3gq  
package org.rut.util.algorithm.support; cY}Nr#%s@U  
6Y#V;/gK!5  
import org.rut.util.algorithm.SortUtil; !k=>Wb8n2  
:6^8Q,C1@  
/** l c<&f  
* @author treeroot @Ju!|G9z/p  
* @since 2006-2-2 v7"Hvp3w  
* @version 1.0 X(b"b:j'  
*/ ~)RKpRga\p  
public class BubbleSort implements SortUtil.Sort{ Ly0U')D:  
%cWy0:F5VY  
/* (non-Javadoc) P]Hcg|&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  IX|2yu4  
*/ G8JwY\  
public void sort(int[] data) { 8gA:s`ofJ  
int temp; C$Y pk\p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ n ..9F$a  
if(data[j] SortUtil.swap(data,j,j-1); I+) Acy;  
} nFVQOr;  
} bS0z\!1  
} 2 |fN*Wm  
} ([-xM%BI6  
)xJo/{?  
} V9v80e {n4  
zUw9  
选择排序: y.zS?vv2g  
$X.X_  
package org.rut.util.algorithm.support; Unl6?_  
LnN6{z{M  
import org.rut.util.algorithm.SortUtil; zU+` o?al  
\#bk$R@  
/** Wr\rruH6  
* @author treeroot 0n <t/74  
* @since 2006-2-2 [l+1zt0w0  
* @version 1.0 =R M=@X  
*/ -Oo7]8  
public class SelectionSort implements SortUtil.Sort { {9 >jWNx  
IC-k  
/* Ksp!xFk  
* (non-Javadoc) k^|P8v+"D  
* zc QFIP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vW\#2[j[  
*/ kf3yJP/  
public void sort(int[] data) { =[O;/~J%:  
int temp; S`LS/)  
for (int i = 0; i < data.length; i++) { &yKUf  
int lowIndex = i; 8:j8>K*6  
for (int j = data.length - 1; j > i; j--) { 4v+4qyMyE  
if (data[j] < data[lowIndex]) { K-$gTV  
lowIndex = j; ~-+lZ4}  
} XYbc1+C  
} yqpb_h9  
SortUtil.swap(data,i,lowIndex); Pg3O )D9  
} :*wnO;eN  
} 8^3Z]=(Q  
Fe(qf>E  
} 1* _wJ  
LoHL}1BG-  
Shell排序: GS^U6Xef  
/aepE~T  
package org.rut.util.algorithm.support; LbGyD;#_  
7` ^]:t  
import org.rut.util.algorithm.SortUtil; 8$fiq}a  
YuWsE4$  
/** p[*NekE6-  
* @author treeroot &H!#jh\w  
* @since 2006-2-2 tlU&p'  
* @version 1.0 dm60O8  
*/ `[JX}<~i  
public class ShellSort implements SortUtil.Sort{ $ctY#:;pV{  
 *$nz<?  
/* (non-Javadoc) t:m2[U_}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Ry )^5Q  
*/ pq`Bg`c  
public void sort(int[] data) { 'l$<DcBj  
for(int i=data.length/2;i>2;i/=2){ F=C8U$'S  
for(int j=0;j insertSort(data,j,i); n<;T BK  
} =N-,.{`  
} i"uAT$xe  
insertSort(data,0,1); u 89u#gCAC  
} yQ> *F  
3IqYpK(s  
/** YShtoaCx>  
* @param data f!}c0nb  
* @param j #`6A}/@.+  
* @param i ]9?_ m@Ihx  
*/ )1H$5h  
private void insertSort(int[] data, int start, int inc) { \*#9Ry^f  
int temp; dA<PQKm  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %gB 0\C  
} X*Mw0;+T  
} 9k_3=KS3N  
} B$b'bw.  
24 S,w>j  
} dq?q(_9  
K;2tY+I  
快速排序: )B@veso{  
MjMPbGUX{  
package org.rut.util.algorithm.support; N1ZHaZ  
,[IN9W  
import org.rut.util.algorithm.SortUtil; -`6O(he  
AF5.gk=  
/** KYY~ YP  
* @author treeroot r=dFk?8XbC  
* @since 2006-2-2 DoA4#+RU  
* @version 1.0 kStWsc$;+T  
*/ IMzhEm  
public class QuickSort implements SortUtil.Sort{ 5Bw  
W`] ,  
/* (non-Javadoc) v/f&rK*>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xz YvD{>  
*/ +x$;T*0  
public void sort(int[] data) { 9="i'nYp  
quickSort(data,0,data.length-1); fL4F ~@`9l  
} 9I/o;Js  
private void quickSort(int[] data,int i,int j){ -\yaP8V  
int pivotIndex=(i+j)/2; w}pFa76rm  
file://swap @= )_PG  
SortUtil.swap(data,pivotIndex,j); 4RsV\Y{FN  
m*h d%1D  
int k=partition(data,i-1,j,data[j]); /EhojODMF  
SortUtil.swap(data,k,j); G8"L #[~  
if((k-i)>1) quickSort(data,i,k-1); `':$PUz,g  
if((j-k)>1) quickSort(data,k+1,j); s]0x^"#B  
.EGZv (rz&  
} RLr;]j8cm  
/** 0o[p<<c*  
* @param data JI5?, )-St  
* @param i 6R5) &L  
* @param j ciI;U/V  
* @return n@w$5y1@  
*/ <pRb#G"  
private int partition(int[] data, int l, int r,int pivot) { Zr'VA,v  
do{ XbYW,a@w2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pm O}m>  
SortUtil.swap(data,l,r); R<)7,i`F  
} GEy^*, d  
while(l SortUtil.swap(data,l,r); NMmk,  
return l; R`Hyg4?  
} Z<z(;)?c  
_OP75kv  
} Lm"l*j4  
| "DQ^)3Pi  
改进后的快速排序: ]~CG zV  
=dUeQ?>t=  
package org.rut.util.algorithm.support; %0@Jm)K^  
L~SM#?z:ue  
import org.rut.util.algorithm.SortUtil; TIlcdpwXf  
]H) x  
/** #/!a=0  
* @author treeroot Rer\='  
* @since 2006-2-2 ZffK];D  
* @version 1.0 Z ) qc-~S  
*/ |i7|QLUT  
public class ImprovedQuickSort implements SortUtil.Sort { -?' r_t  
0Z8K+,'!  
private static int MAX_STACK_SIZE=4096; z '3  
private static int THRESHOLD=10; QM`A74j0]\  
/* (non-Javadoc) > y"V%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bcC ;i~9  
*/ K+TRt"W8&s  
public void sort(int[] data) { mu04TPj  
int[] stack=new int[MAX_STACK_SIZE]; Hq"i0X m  
*xA&t)z(i  
int top=-1; #g\O*oYaw  
int pivot; PYPs64kNC]  
int pivotIndex,l,r; w0x, ~  
?@6N EfQf  
stack[++top]=0; }Zc.rk  
stack[++top]=data.length-1; 6pM[.:TM   
a,x-akZWf  
while(top>0){ ir-srVoXy  
int j=stack[top--]; yYwZZa1  
int i=stack[top--]; \I1+J9Gl  
rR&;2  
pivotIndex=(i+j)/2; =o;8xKj  
pivot=data[pivotIndex]; R2yiExw<  
SwpS6  
SortUtil.swap(data,pivotIndex,j); d4t %/Uh  
K[PH#dF5,x  
file://partition e82SG8#]  
l=i-1; py VTA1  
r=j; Vb az#I  
do{ .z4 fJx  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cm@q{(r  
SortUtil.swap(data,l,r); Y^Y|\0  
} WM$}1:O  
while(l SortUtil.swap(data,l,r); k#NIY4%.  
SortUtil.swap(data,l,j); 0sM{yGu=,  
"bZ%1)+  
if((l-i)>THRESHOLD){ Y|FF ;[  
stack[++top]=i; 9`]Gosz  
stack[++top]=l-1; c1B <9_  
} / E}L%OvE  
if((j-l)>THRESHOLD){ UJMM&  
stack[++top]=l+1; bYQvh/(J  
stack[++top]=j; jI %v[]V  
} N^z4I,GV(  
8 9o&KF]  
} _rt+OzZ*L  
file://new InsertSort().sort(data); >uT,Z,7O  
insertSort(data); s :ig;zb  
} 6U~AKq"+f  
/** o~<Xc  
* @param data &0cfTb)dG  
*/ pW$ZcnU  
private void insertSort(int[] data) { {~q"Y]?  
int temp; n]:Xmi8p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `Cq&;-u  
} uqy&P S  
} V&)Jvx}^  
} l7#5.%A  
)N$T&  
} 9/2VU< K  
!Q[j;f   
归并排序: %PA#x36  
EMy>X  
package org.rut.util.algorithm.support; 9#(Nd, m})  
fk%W0 7x!  
import org.rut.util.algorithm.SortUtil; =D-u".{  
r+ v?~m!  
/** A1>fNilC9  
* @author treeroot rSu+zS7`X  
* @since 2006-2-2 ]90BIJ]*c  
* @version 1.0 kIl!n  
*/ k7,   
public class MergeSort implements SortUtil.Sort{ 3Ye{a<ckK  
Q$,AQyBlqc  
/* (non-Javadoc) RW"QUT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YoDL/  
*/ \dAs<${(  
public void sort(int[] data) { )?`G"( y  
int[] temp=new int[data.length]; _43'W{%  
mergeSort(data,temp,0,data.length-1); |WP}y- Au  
} a+mrsyM  
f4'WT  
private void mergeSort(int[] data,int[] temp,int l,int r){ m3T=x =  
int mid=(l+r)/2; Ww=^P{q\  
if(l==r) return ; *jQ?(Tf  
mergeSort(data,temp,l,mid); =D~>$ Y  
mergeSort(data,temp,mid+1,r); 76oJCNY  
for(int i=l;i<=r;i++){ nh XVc((  
temp=data; px${ "K<  
} 52,[dP,g  
int i1=l; l+nT$IPF  
int i2=mid+1; OsT|MX  
for(int cur=l;cur<=r;cur++){ -UB XWl  
if(i1==mid+1) J7;8 S  
data[cur]=temp[i2++]; MCO2(E-  
else if(i2>r) rdH3!  
data[cur]=temp[i1++]; {gz-w|7  
else if(temp[i1] data[cur]=temp[i1++]; ;mT  
else r'(*#  
data[cur]=temp[i2++]; 8bJj3vr  
} xlcL;e&^P  
} zm!M'|~@7  
 Q}9!aB,  
} xyD2<?dGUb  
h6b(FTC^  
改进后的归并排序: }el7@Gv  
baoyU#X9  
package org.rut.util.algorithm.support; 5szJ.!(  
5 ) q_Aro  
import org.rut.util.algorithm.SortUtil; )b?$ 4<X^  
,njlKkFw^Z  
/** )+Y"4?z~  
* @author treeroot a]/KJn /B(  
* @since 2006-2-2 P$x9Z3d_  
* @version 1.0 Vk> &  
*/ ,!40\"A  
public class ImprovedMergeSort implements SortUtil.Sort { n:[@#xs-  
k|,Y_h0Y  
private static final int THRESHOLD = 10; -7KoR}Ck!  
Lb?WhjqZ  
/* efNscgi  
* (non-Javadoc) ..kFn!5(g  
* oJZxRm[g$t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ld 0*)rI#  
*/ 9 JhCSw-<)  
public void sort(int[] data) { 0xx4rp H  
int[] temp=new int[data.length]; ;W T<]  
mergeSort(data,temp,0,data.length-1); +T&YYO8>5  
} :R`e<g~4  
4fIjVx  
private void mergeSort(int[] data, int[] temp, int l, int r) { 80=LT-%#  
int i, j, k; Y7zs)W8xTT  
int mid = (l + r) / 2; Q*Y-@lZ  
if (l == r) gnGh )  
return; 1c{m rsB  
if ((mid - l) >= THRESHOLD) h% KEg667  
mergeSort(data, temp, l, mid); }h sNsQ   
else DS;\24>H  
insertSort(data, l, mid - l + 1); P-a8S*RRa  
if ((r - mid) > THRESHOLD) Xt:$H6 y  
mergeSort(data, temp, mid + 1, r); Ims?  
else Wsgp#W+  
insertSort(data, mid + 1, r - mid); `#' j3,\6  
ZH|q#< {l  
for (i = l; i <= mid; i++) { {?Nm"#  
temp = data; =IW!ZN_  
} (3K3)0fy  
for (j = 1; j <= r - mid; j++) { ,oUzaEX  
temp[r - j + 1] = data[j + mid]; "P0!cY8r  
} }AA">FF'y4  
int a = temp[l]; 0zA;%oP  
int b = temp[r]; "-djA,`  
for (i = l, j = r, k = l; k <= r; k++) { Q=8YAiCu  
if (a < b) { ! d<R =L  
data[k] = temp[i++]; ii_kgqT^  
a = temp; v$0|\)E)  
} else { xVw@pR;  
data[k] = temp[j--]; kc0MQ TJU  
b = temp[j]; g5y`XFY  
} mZ2CG O R  
} 0VcHz$ 6  
} JRi:MWR<r  
?)J/uU2w  
/** /='0W3+o*L  
* @param data =3c?W&:  
* @param l xh bN=L  
* @param i v@|<.  
*/ hcj]T?  
private void insertSort(int[] data, int start, int len) { NuPlrCy;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :>.{w$Ln%  
} .n1&Jsey  
} *ma w`1  
} 4VZI]3K,  
} XrM+DQ;  
4/|x^Ky>G  
堆排序: WM`3QJb  
{daX?N|V  
package org.rut.util.algorithm.support; X+ITW#  
r) x  
import org.rut.util.algorithm.SortUtil; z`IW[N7Z  
!DzeJWM|  
/** t*9 gusmG  
* @author treeroot A!Cby!,  
* @since 2006-2-2 $*942. =Q  
* @version 1.0 6w7;  
*/ 5PO_qr= Hx  
public class HeapSort implements SortUtil.Sort{ o3dqsQE%  
&Gh0f"?  
/* (non-Javadoc) F<k+>e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q3ty K{JE  
*/ V.&F%(L  
public void sort(int[] data) { GZ~Tl0U  
MaxHeap h=new MaxHeap(); v']_)  
h.init(data); 3~T ~Bs  
for(int i=0;i h.remove(); ;Y\LsmZ;F  
System.arraycopy(h.queue,1,data,0,data.length); vSR&>Q%X  
} [(@K;6o  
?OFa Q  
private static class MaxHeap{ u:f ]|Q  
RFL * qd4  
void init(int[] data){ <4; nq~  
this.queue=new int[data.length+1]; 7. <jdp  
for(int i=0;i queue[++size]=data; L]H'$~xx*  
fixUp(size); ).^d3Kp  
} 3<&:av3  
} oj djy#:  
QCW4gIp  
private int size=0; d}4NL:=&  
Nu6NyYs  
private int[] queue; Cq!eAc  
QT,T5Q%JP:  
public int get() { gS~H1Ro  
return queue[1]; #@B"E2F  
} #gQn3.PX+y  
+r3)\L{U  
public void remove() { ML_VD*t9  
SortUtil.swap(queue,1,size--); 9,'m,2%W  
fixDown(1); P`lv_oV  
} <2U@O` gC  
file://fixdown JJd qdX;  
private void fixDown(int k) {  pX_#Y)5  
int j; !G3AD3  
while ((j = k << 1) <= size) { PT2;%=f  
if (j < size %26amp;%26amp; queue[j] j++; RE;A 0E_3  
if (queue[k]>queue[j]) file://不用交换 DEZww9T2Qs  
break; v8ap"9b  
SortUtil.swap(queue,j,k); op}!1y$9P  
k = j; #-;c!<2  
} 7.h{"xOx{  
} rRq60A  
private void fixUp(int k) { E%`J =C}  
while (k > 1) { 4f\NtQ)  
int j = k >> 1; ^!1!l-  
if (queue[j]>queue[k]) &'z_:Wm  
break; gyvrQ, u  
SortUtil.swap(queue,j,k); '|IcL1c=I  
k = j; Vu5?;|^:  
} $.jG O!  
} l53i {o  
jo:Z  
} %4*c/ c6  
U>PZ3  
} LlX)xJ  
RM|J |R  
SortUtil: \(Sly&gL  
LL(xi )  
package org.rut.util.algorithm; (TT=i  
D^6*Cwb  
import org.rut.util.algorithm.support.BubbleSort; ^+m`mcsE  
import org.rut.util.algorithm.support.HeapSort; &ys>z<Z  
import org.rut.util.algorithm.support.ImprovedMergeSort; #%E`~&[  
import org.rut.util.algorithm.support.ImprovedQuickSort;  _<S!tW  
import org.rut.util.algorithm.support.InsertSort; ]@$^Ju,  
import org.rut.util.algorithm.support.MergeSort; yvB]rz} i  
import org.rut.util.algorithm.support.QuickSort; [inlxJD  
import org.rut.util.algorithm.support.SelectionSort; *igmi9A  
import org.rut.util.algorithm.support.ShellSort; ws0qwv#  
o'DtW#F  
/** MRLiiIrq,5  
* @author treeroot ztO)~uL  
* @since 2006-2-2 R:~aX,qR  
* @version 1.0 3:WqUb\QK  
*/ h[remR# 3\  
public class SortUtil { ]\M{Abqd{  
public final static int INSERT = 1; << 6 GE  
public final static int BUBBLE = 2; GeR#B;{  
public final static int SELECTION = 3; oYu xkG  
public final static int SHELL = 4; Q#p)?:o/  
public final static int QUICK = 5; vvxxwZa=O  
public final static int IMPROVED_QUICK = 6; =!\Nh,\eQ  
public final static int MERGE = 7; <j'K7We/tP  
public final static int IMPROVED_MERGE = 8; 2w.FC  
public final static int HEAP = 9; 'NtI bS  
>+%#m'Y&&  
public static void sort(int[] data) { R{@saa5I(>  
sort(data, IMPROVED_QUICK); ]K(a32VCH  
} |Rf j 0+  
private static String[] name={ i-CJ{l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NljpkeX'  
}; ,l>w9?0Z  
-gs I:-Xo  
private static Sort[] impl=new Sort[]{ hY4#4A`I  
new InsertSort(), nd' D0<%  
new BubbleSort(), ;dzy 5o3  
new SelectionSort(), \tgY2 :  
new ShellSort(), I1 ]YT  
new QuickSort(), M XG>|  
new ImprovedQuickSort(), Km5_P##  
new MergeSort(), pz^S3fy  
new ImprovedMergeSort(), 6(E4l5 %  
new HeapSort()  %j&vV>2  
}; [Hx}#Kds  
5Dkb/Iagi  
public static String toString(int algorithm){ b~.$1oZ  
return name[algorithm-1]; Y(,RJ&7  
} <f7 O3 >  
:I#.d7`uk  
public static void sort(int[] data, int algorithm) { q{9vY:`[  
impl[algorithm-1].sort(data); w[z=x  
} "(mJupI  
%wbdg&^  
public static interface Sort { E3wpC#[Q1  
public void sort(int[] data); 1EV bGe%b  
} ,3?=W/Um4  
 hlVC+%8  
public static void swap(int[] data, int i, int j) { Pim  
int temp = data; f,ro1Nke  
data = data[j]; IgbuMEfL  
data[j] = temp; O8Mypv/C  
} j)@W1I]2#  
} ;W{z"L;nX  
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