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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。 /\H>y  
插入排序: ]p;FZ4-T  
xA9:*>+>  
package org.rut.util.algorithm.support; ]R=,5kK3  
1qf!DMcdZ  
import org.rut.util.algorithm.SortUtil; %-<'QYYP  
/**  jcI&w#re  
* @author treeroot }S3qBQTYL  
* @since 2006-2-2 7c~u=U"  
* @version 1.0 $dA-2e1 0  
*/ v>Mnl  
public class InsertSort implements SortUtil.Sort{ NcP.;u;`  
6%fKuMpK(  
/* (non-Javadoc) C&6IU8l\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  +QE^\a  
*/ ' 4E R00  
public void sort(int[] data) { ^|TG$`M(w  
int temp; h;-yU.(w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $2u 'N:o  
} (sQr X{~  
} bzvh%RsW  
} c7M%xGrP  
($L Ll;1  
} Y}[c^$S  
x3u4v~ "-  
冒泡排序: XXh6^@H=  
KX}Rr7a  
package org.rut.util.algorithm.support; RKPD4e>%  
|U_]vMq  
import org.rut.util.algorithm.SortUtil; I8QjKI (  
r)i>06Hd  
/** PI*82,f3dE  
* @author treeroot &R$CZU  
* @since 2006-2-2 JR@.R ,rII  
* @version 1.0 j~FD{%4N  
*/ STglw-TC\  
public class BubbleSort implements SortUtil.Sort{ 3LfC{ER  
in(U:04  
/* (non-Javadoc) zLF?P3^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m~dC3}e8/?  
*/ 8@PX7!9  
public void sort(int[] data) { TARXx>  
int temp; (%U@3._  
for(int i=0;i for(int j=data.length-1;j>i;j--){ E"L2&.  
if(data[j] SortUtil.swap(data,j,j-1); 1Jj Y!  
} CEC nq3  
} YFTjPBV  
} w=}uwvn NX  
} Nr0 (E   
9{$'S 4  
} HFqm6|  
4<x'ocKlD  
选择排序: /'hCi]b@v  
\T;\XAGr  
package org.rut.util.algorithm.support; (?H0+zws^  
& u!\<\  
import org.rut.util.algorithm.SortUtil; nN~~cV  
gN>2xnh'm  
/** r@{~ 5&L  
* @author treeroot J -ePE7i  
* @since 2006-2-2 *#TYqCc+g  
* @version 1.0 (708H_  
*/ qiZO _=0  
public class SelectionSort implements SortUtil.Sort { 4Td{;Y="yF  
*c)uGz'cD  
/* )~V4+*<  
* (non-Javadoc) +`sv91c  
* 720)VzT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cv(PP-'\  
*/ m{7^EF  
public void sort(int[] data) { jt@SZI`  
int temp; r|*&GHo L  
for (int i = 0; i < data.length; i++) { fGv#s X  
int lowIndex = i; WO6/X/#8b  
for (int j = data.length - 1; j > i; j--) { 4G@nZn  
if (data[j] < data[lowIndex]) { l_j4DQBRV  
lowIndex = j; "/]| Hhc{  
} huudBc A[  
} ^ZM0c>ev=l  
SortUtil.swap(data,i,lowIndex); SSBg?H'T  
} zd]D(qeX  
} `]v[5E  
D{v8q)5r  
} -B$~`2-  
?k[p<Uo  
Shell排序: AkU<g  
eh*6cQ.0  
package org.rut.util.algorithm.support; 4Iq'/r  
]MtFf6&  
import org.rut.util.algorithm.SortUtil; CU:o*;jP  
aS}1Q?cU  
/** y[@\j9Hq  
* @author treeroot qi^!GA'5j  
* @since 2006-2-2 q4UA]+-*  
* @version 1.0 ];+#i"l  
*/ ^O^:$nXhYy  
public class ShellSort implements SortUtil.Sort{ q EUT90  
O;HY%  
/* (non-Javadoc) qP!P +'B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Cc.cce5  
*/ 1\L[i];L8  
public void sort(int[] data) { +]:2\TTGI  
for(int i=data.length/2;i>2;i/=2){ ~^)^q8  
for(int j=0;j insertSort(data,j,i); utlpY1#q/  
} .7ayQp  
} Oq(VvS/  
insertSort(data,0,1); Xj+q~4{|vt  
} l_/C65%.:  
:RxHw;!  
/** aH_6s4+:  
* @param data 4y}"Hy  
* @param j W&"|}Pi/  
* @param i Uf*EJ1Ei  
*/ nL]^$J$  
private void insertSort(int[] data, int start, int inc) { T_<BVM  
int temp; t@?u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /DS?}I.*]  
} FZpKFsPx  
} sTHq&(hLUG  
} \'?#i @O  
h7_)%U<J2  
} (3,.3)%`  
S(eQ{rSs  
快速排序: s]B"qF A  
`BZ&~vJ_  
package org.rut.util.algorithm.support; a?cn9i)#  
@hE7r-}]  
import org.rut.util.algorithm.SortUtil; b>G qNf!  
 "Nk`RsW  
/** %iHyt,0v2  
* @author treeroot s?4%<jz  
* @since 2006-2-2 *?EjYI  
* @version 1.0 I8E\'`:<  
*/ m0dFA<5-  
public class QuickSort implements SortUtil.Sort{ DW'0j$;  
< P?3GT/  
/* (non-Javadoc) yt]Oj*nn0K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]w1BJZa36  
*/ 7J #g1  
public void sort(int[] data) { GQEI f$  
quickSort(data,0,data.length-1); ^sr:N5~z`  
} m-~V+JU;x  
private void quickSort(int[] data,int i,int j){ TWl(\<&+)  
int pivotIndex=(i+j)/2; G}Qk!r  
file://swap >" PqQO  
SortUtil.swap(data,pivotIndex,j); .3S\Rrv  
Kt/+PS  
int k=partition(data,i-1,j,data[j]); Z7m GC`>  
SortUtil.swap(data,k,j); mmpr]cT@'k  
if((k-i)>1) quickSort(data,i,k-1); s$2l"|h>B  
if((j-k)>1) quickSort(data,k+1,j); e0G}$ as  
4{Yy05PFS  
} \E ? iw.}  
/** }uV?  
* @param data U_ N5~#9   
* @param i =+SVzK,+3  
* @param j i+qLc6|S=2  
* @return >yPFL'  
*/ 2f}K #i8   
private int partition(int[] data, int l, int r,int pivot) { QTrlQH&p  
do{ TCEXa?,L  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n '0 $>Q  
SortUtil.swap(data,l,r); O[5_ 9W 4  
} T?p`Y| gl  
while(l SortUtil.swap(data,l,r); a@V/sh  
return l; \h'E5LO  
} :<WQ;q  
="'P=Xh!8  
} ac+k 5K+  
^! v}  
改进后的快速排序: 95gsv\2  
c|!A?>O?i  
package org.rut.util.algorithm.support; n'&`9M['%d  
SceCucT  
import org.rut.util.algorithm.SortUtil; )68fm\t(  
EZwdx  
/** :+%h  
* @author treeroot A 4W  
* @since 2006-2-2 _w5~/PbWt  
* @version 1.0 8t*%q+Z  
*/ M~{P',l*  
public class ImprovedQuickSort implements SortUtil.Sort { h<^:Nn  
5?~[|iPv  
private static int MAX_STACK_SIZE=4096; X\$W'^np  
private static int THRESHOLD=10; G=bP<XF  
/* (non-Javadoc) ;~gd<KK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >$S,>d_k`  
*/ %3l;bR>  
public void sort(int[] data) { sG1]A:_<C  
int[] stack=new int[MAX_STACK_SIZE]; mP$G9R  
T m@1q!G  
int top=-1; \gI:`>- x  
int pivot; VgZaDd;  
int pivotIndex,l,r; PqJ*   
64 \5v?C  
stack[++top]=0; ?#EXG  
stack[++top]=data.length-1; yL3<X w|  
4(0t GF  
while(top>0){ sc $QbOc  
int j=stack[top--];  ZV q  
int i=stack[top--]; -IE P?NX  
UK <DcM~n  
pivotIndex=(i+j)/2; hp z*jyh8  
pivot=data[pivotIndex]; =@jMx^A"  
^B!?;\4IM  
SortUtil.swap(data,pivotIndex,j); if!`Qid  
<sCq x/L  
file://partition On.x~ t  
l=i-1; } Ved  
r=j; F/od,w9_  
do{ 3 cW"VrFy9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C94UF7al  
SortUtil.swap(data,l,r); F3 l^^ Mc  
} B?ob{K@  
while(l SortUtil.swap(data,l,r); BSu)O~s  
SortUtil.swap(data,l,j); X@AkA9'fq  
//u76nQ  
if((l-i)>THRESHOLD){ oJJ k  
stack[++top]=i; %FWfiFV|<  
stack[++top]=l-1; rWfurB5f  
} ryp$|?ckJ  
if((j-l)>THRESHOLD){ (DMnwqr  
stack[++top]=l+1; BvW gH.OX  
stack[++top]=j; pdha" EV  
} 07"Oj9NlA  
>\.[}th}  
} Nl<,rD+KSD  
file://new InsertSort().sort(data); PW//8lsR  
insertSort(data); xOyL2   
} ;q&D,4r]  
/** ?| LB:8  
* @param data 0#/ 6P&6  
*/ d~Ry>   
private void insertSort(int[] data) { .d!*<`S|  
int temp; {BCj VmY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Eg29|)qsz  
} r4ttEJ-jG  
} D=sc41]  
} 6SO7iFS  
 de47O  
} vGHYB1=~  
Tn-]0hWkP  
归并排序: _1c_TMh}9  
Rs[]i;  
package org.rut.util.algorithm.support; g2<S4  
PM>XT  
import org.rut.util.algorithm.SortUtil; SY)$2RC+}  
aB!Am +g  
/** Hll}8d6[  
* @author treeroot K.1yncS^  
* @since 2006-2-2 emPm^M5/K  
* @version 1.0 r+p jv_R  
*/ RAbq_^Q  
public class MergeSort implements SortUtil.Sort{ !*UdY(  
g9Gy3zk=  
/* (non-Javadoc) N4jLbnA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >! .9g  
*/ 6|cl`}g_j  
public void sort(int[] data) { S5a<L_  
int[] temp=new int[data.length]; NP*0WT_gB  
mergeSort(data,temp,0,data.length-1); NWK_(=n  
} 1^^D :tt  
@\}36y  
private void mergeSort(int[] data,int[] temp,int l,int r){ gSYX@'Q!  
int mid=(l+r)/2; (r\h dLX  
if(l==r) return ; s2=X>,kz?  
mergeSort(data,temp,l,mid); 17MjIX  
mergeSort(data,temp,mid+1,r); &~f_1<  
for(int i=l;i<=r;i++){ >{Z=cv/6o  
temp=data; a`Z f_;$@  
} z1s"C[W2T  
int i1=l; j)qh>y)  
int i2=mid+1; <U pjAuG8  
for(int cur=l;cur<=r;cur++){ ]_8 \g`"u  
if(i1==mid+1) TJ:Lz]l >  
data[cur]=temp[i2++]; 0|;=mYa4M  
else if(i2>r) ", )  
data[cur]=temp[i1++]; ;g]+MLV9  
else if(temp[i1] data[cur]=temp[i1++]; R,1,4XT  
else  |?A-?-  
data[cur]=temp[i2++]; ?='9YM  
} g>zL{[e!  
} P,_E 4y  
),,vu  
} w,9F riW  
gwNkjI= ,  
改进后的归并排序: ?9TogW>W  
bp,CvQ'}a  
package org.rut.util.algorithm.support; >O~5s.1u  
{H2i+"cF  
import org.rut.util.algorithm.SortUtil; 9To6Rc;  
Z- (HDn  
/** 6~>k]G  
* @author treeroot !d(V7`8  
* @since 2006-2-2 _@2G]JD  
* @version 1.0 W$S.?[X  
*/ ,qB081hPG  
public class ImprovedMergeSort implements SortUtil.Sort { <b I,y_<K  
e AjtWqg  
private static final int THRESHOLD = 10; PK" C+o;:  
Uw"   
/* KK</5Aw9p  
* (non-Javadoc) J~.kb k  
* <H6Uo#ao  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K<GCP2  
*/  E"=$p $k  
public void sort(int[] data) { 's<}@-]  
int[] temp=new int[data.length]; g\'sGt3O  
mergeSort(data,temp,0,data.length-1); p~IvkW>ln)  
} Gj3/&'k6  
*OiHrI9y  
private void mergeSort(int[] data, int[] temp, int l, int r) { y1X.Mvc  
int i, j, k; 1~ Nz6  
int mid = (l + r) / 2; |:z%7J3wP  
if (l == r) ikQ2x]Sp  
return; ]mSVjF3l  
if ((mid - l) >= THRESHOLD) 7f>n`nq?  
mergeSort(data, temp, l, mid); CR<l"~X  
else srL,9)O C  
insertSort(data, l, mid - l + 1); z61 o6mb  
if ((r - mid) > THRESHOLD) o;fQ,r P%  
mergeSort(data, temp, mid + 1, r); q9Q4F  
else X}$S|1CjO  
insertSort(data, mid + 1, r - mid); t&_lpffv  
Jp- hFD  
for (i = l; i <= mid; i++) { 2 O%UT?R  
temp = data; +Q.[W`goV  
} GfDA5v[  
for (j = 1; j <= r - mid; j++) { +\4=G@P.J  
temp[r - j + 1] = data[j + mid]; e 6*=Si}V  
} d9s"y?8  
int a = temp[l]; Gx m"HC  
int b = temp[r]; ",a fv{C  
for (i = l, j = r, k = l; k <= r; k++) { rgr> ;   
if (a < b) { 2sngi@\  
data[k] = temp[i++]; 5s;#C/ZZ  
a = temp; EOL03N   
} else { 4"{q|~&=:$  
data[k] = temp[j--]; VuGSP]$q  
b = temp[j]; c c:xT0Y  
} ec|IT0;  
} (U)=t$=o  
} J#\/znT  
q07>FW R  
/** )j](_kvK  
* @param data rie1F,  
* @param l >a,w8^7  
* @param i F)C8LH  
*/ >Q YxX<W  
private void insertSort(int[] data, int start, int len) { xe d$z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =3FXU{"Qi4  
} #C|iW@  
} _QQO&0Z  
} il: ""x7^y  
} )[A}h'J)  
BP`UB  
堆排序: Ou/{PK}  
uy$o%NL-7  
package org.rut.util.algorithm.support; hSxf;>(d  
{|qz>  
import org.rut.util.algorithm.SortUtil; k7j;'6  
d6u L;eR  
/** ;(z0r_p<q  
* @author treeroot #6JG#!W  
* @since 2006-2-2 W)KV"A3C  
* @version 1.0 Q WOd&=:  
*/ <|v]9`'  
public class HeapSort implements SortUtil.Sort{ ~#wq sm  
6b@:La  
/* (non-Javadoc) Jg@PhN<9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <MoWS9s!yb  
*/ 0 ~VniF^  
public void sort(int[] data) { *\emRI>  
MaxHeap h=new MaxHeap(); ^27r-0|l^  
h.init(data); m/<7FU8  
for(int i=0;i h.remove(); [-Dx)N  
System.arraycopy(h.queue,1,data,0,data.length); @X|CubJ  
} >xT8[  
lV3\5AEW  
private static class MaxHeap{ J@52<.>6  
}.x?$C+\"  
void init(int[] data){ ^dQ#\uy  
this.queue=new int[data.length+1]; TwY]c<t  
for(int i=0;i queue[++size]=data; oTZNW  
fixUp(size); op;OPf,  
} Po% V%~  
} Mc9%s$MT  
;8H m#p7,  
private int size=0; 5EM(3eY^q  
2}K7(y!?u  
private int[] queue; awGI|d  
2ACN5lyUS  
public int get() { SZNM$X|T  
return queue[1]; 6Wl+5 a6V  
} A?=g!(wB  
4Z,MqG>  
public void remove() { I!~5.  
SortUtil.swap(queue,1,size--); Ap=L lZ  
fixDown(1); 5?{a=r9  
} xh,};TS(K  
file://fixdown b 'jZ4{+W  
private void fixDown(int k) {  [td)v,  
int j; /0IvvD!7N  
while ((j = k << 1) <= size) { !K'j[cA^  
if (j < size %26amp;%26amp; queue[j] j++; u,I_p[`E  
if (queue[k]>queue[j]) file://不用交换 8HDYA$L  
break; N*y09?/h  
SortUtil.swap(queue,j,k); k?ZtRhPu3X  
k = j; FWNWOU  
} a"@k11  
} hOG9  
private void fixUp(int k) { &'Pwz  
while (k > 1) { @m[q0G}  
int j = k >> 1; B&3oo   
if (queue[j]>queue[k]) F jsnFX;  
break; |uf{:U)  
SortUtil.swap(queue,j,k); n]S DpptM  
k = j; ya.!zGH  
} `f?v_Ui-$  
} *:L-/Q)i  
>]s\%GO  
} }86&? 0j.  
d^p af  
} Er509zZ,[  
5n{J}0C  
SortUtil: Y>W$n9d&G2  
Q$u&/g3NvL  
package org.rut.util.algorithm; |, #DB  
O<}3\O )G(  
import org.rut.util.algorithm.support.BubbleSort; /Y| y0iK  
import org.rut.util.algorithm.support.HeapSort; }81eef4$S  
import org.rut.util.algorithm.support.ImprovedMergeSort; P5-1z&9O  
import org.rut.util.algorithm.support.ImprovedQuickSort; -hL0}Wy$N  
import org.rut.util.algorithm.support.InsertSort; !'scOWWn  
import org.rut.util.algorithm.support.MergeSort; ;r<(n3"F  
import org.rut.util.algorithm.support.QuickSort; ML eo3  
import org.rut.util.algorithm.support.SelectionSort; max 5s$@  
import org.rut.util.algorithm.support.ShellSort; ]:H((rk  
}Rl^7h<!  
/** I!LSD i3  
* @author treeroot "wwAbU<  
* @since 2006-2-2 ;6+e!h'1  
* @version 1.0 DNTkv_S  
*/ "$P|!k45(  
public class SortUtil { )\K;Ncp[  
public final static int INSERT = 1; n`v;S>aT  
public final static int BUBBLE = 2; -o: if F|  
public final static int SELECTION = 3; +ftOJFkI  
public final static int SHELL = 4; hv. 33l  
public final static int QUICK = 5; "&9L  
public final static int IMPROVED_QUICK = 6; F"I{_yleq'  
public final static int MERGE = 7; b{+7sl  
public final static int IMPROVED_MERGE = 8; \Dn47V{7-  
public final static int HEAP = 9; WxE^S ??|  
y&A0}>a:d  
public static void sort(int[] data) { I7=g8/JD  
sort(data, IMPROVED_QUICK); hKx*V"7/#\  
} $!Qv f  
private static String[] name={ nf%"7y{dd  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BIJlU(aF  
}; %KjvV<f-a  
;pH&YBY  
private static Sort[] impl=new Sort[]{ *HC[LM  
new InsertSort(), H]I^?+)9  
new BubbleSort(), C4,;l^?=%  
new SelectionSort(), D6Q6yNE  
new ShellSort(), 27"M]17)  
new QuickSort(), 6x]x>:8  
new ImprovedQuickSort(), S`w_q=-^8  
new MergeSort(), OCX>LK!K  
new ImprovedMergeSort(), l^~E+F~  
new HeapSort() 0aWy!d  
}; b '9L}q2m  
@gc|Z]CV  
public static String toString(int algorithm){ I38j[Xk  
return name[algorithm-1]; 31cC*  
} ezz;NH  
7RpAsLH=  
public static void sort(int[] data, int algorithm) { *X%dg$VcV  
impl[algorithm-1].sort(data); Uo<iZ3J  
} 03)R_A  
i!nPiac  
public static interface Sort { Sd9%tO9mf  
public void sort(int[] data); n1E^8[~'  
} C@P4}X0,=  
:nLhg$wMs  
public static void swap(int[] data, int i, int j) { =Rw-@ *#l  
int temp = data; d*cAm$  
data = data[j]; USDqh437  
data[j] = temp; _yH=w'8.  
} VV%Q "0 \  
} Nn:>c<[  
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