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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。 j["b*X`8G  
插入排序: R[>fT}Lo  
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package org.rut.util.algorithm.support; +5(#~  
Q jMH1S  
import org.rut.util.algorithm.SortUtil; !%n3_tZC  
/** |<&9_Aq_  
* @author treeroot [>xwwm  
* @since 2006-2-2 2<Lnfc<^k  
* @version 1.0 [h7nOUL!  
*/ |- 39ZZOX  
public class InsertSort implements SortUtil.Sort{ qX[a\HQa  
4[t1"s~Wg  
/* (non-Javadoc) der'<Q.U:k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U CzIOxp}  
*/ ?<c)r~9]  
public void sort(int[] data) { Y9fktg.  
int temp; #N\kMJl$l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LU5e!bP  
}  6jFc'  
} C*kGB(H7  
} o9+ "6V|.  
4bD^Kc 4\  
} x_lCagRGC4  
D{YAEG   
冒泡排序: ]Ga}+^  
SBo>\<@  
package org.rut.util.algorithm.support; -d? 9Acd  
T-pes1Wu  
import org.rut.util.algorithm.SortUtil; v5U\E`)s  
5tI4m#y2  
/** 6tXx--Nh  
* @author treeroot T% J;~|  
* @since 2006-2-2 Fi.gf?d  
* @version 1.0 +u;f]p  
*/ CHp`4  
public class BubbleSort implements SortUtil.Sort{ ZaQg SE>Y  
:X-Z|Pv8  
/* (non-Javadoc) VR/7CI4=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +grIw# j  
*/ jO\29(_  
public void sort(int[] data) {  ?CKINN  
int temp; *x3";%o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 42mi 7%f  
if(data[j] SortUtil.swap(data,j,j-1); 4G;FpWQm  
} [|PVq#(  
} 7:x%^J+  
} B,?Fjot#m  
} pfS?:f<+6"  
)2T1g~8  
} Eyu]0+  
=)}m4,LA  
选择排序: 'j>+eA>  
y\L$8BSL  
package org.rut.util.algorithm.support; Nx>WOb98  
N=hr%{} c  
import org.rut.util.algorithm.SortUtil; 4/; X-  
\ZiZ X$  
/** #@xSR:m  
* @author treeroot `k~.>#  
* @since 2006-2-2 2*:lFv wP  
* @version 1.0 1jU<]09.  
*/ jT/SZ|S  
public class SelectionSort implements SortUtil.Sort { Z(LDAZG  
VP^Yph 8R  
/* "4N%I  
* (non-Javadoc) kgfOH.P  
* W!B4~L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N\XZ=t^h(  
*/ 5qo^SiB.  
public void sort(int[] data) { , |SO'dG  
int temp; OM5"&ZIZb  
for (int i = 0; i < data.length; i++) { .`4N#EjP  
int lowIndex = i; _%#Q \ D  
for (int j = data.length - 1; j > i; j--) { -'& 4No  
if (data[j] < data[lowIndex]) { Ezw(J[).C  
lowIndex = j; x9}D2Ui  
} H'68K8i0  
} p] kpDx[9  
SortUtil.swap(data,i,lowIndex); ?d`?Ss;v  
} ZzfGs  
} |0nbO2}  
-N`j` zb|  
} u,<I%  
( XYYbP  
Shell排序: @a,X{ 0  
`c@KlL*!Q  
package org.rut.util.algorithm.support; ^/`:o}7K7  
J5Rr7=:*S  
import org.rut.util.algorithm.SortUtil; DE3>F^ j  
5fi6>>  
/** K|$Dnma^n  
* @author treeroot ^)=c74;;  
* @since 2006-2-2 Pnq[r2#]:  
* @version 1.0 ?Pz:H/ $  
*/ l/[0N@r~  
public class ShellSort implements SortUtil.Sort{ z#*M}RR  
>xu}eWSz  
/* (non-Javadoc) QW :-q(s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0JTDJZOz@#  
*/ "(j.:jayd  
public void sort(int[] data) { h _6QVab@  
for(int i=data.length/2;i>2;i/=2){ #iD5& klo\  
for(int j=0;j insertSort(data,j,i); UKyOkuY:w  
} =&?}qa(P  
} <-uE pF  
insertSort(data,0,1); v|acKux=t  
} '/+l\.z"&  
4~-"k{Xt  
/** b}'XDw   
* @param data VQE8hQ37  
* @param j "'p;Udt/Qm  
* @param i tK)E*!  
*/ *k'D%}N:  
private void insertSort(int[] data, int start, int inc) { <%klrQya  
int temp; NikY0=i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !f\,xa|M  
} %Y8#I3jVJ  
} y05(/NH>  
} pUby0)}t  
hKv3;jcd  
} h,B ]5Of  
`btw*{.[  
快速排序: TTcMIMyLT  
zt{?Nt b  
package org.rut.util.algorithm.support; _U)BOE0o  
d K|6p_  
import org.rut.util.algorithm.SortUtil; !J ")TP=  
clK3kBh~&  
/** C!xqp   
* @author treeroot w^tNYN,i  
* @since 2006-2-2 lC&U9=7W  
* @version 1.0 un|+YqLf  
*/ 9?B}CCE<LR  
public class QuickSort implements SortUtil.Sort{ @f442@_4  
v,w/g|  
/* (non-Javadoc) 'J~{8w,.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C;2!c  
*/ O-- "\4  
public void sort(int[] data) { ?H8w/{J   
quickSort(data,0,data.length-1); Dg~r%F  
} p]=a:kd4J  
private void quickSort(int[] data,int i,int j){ [/ uqH  
int pivotIndex=(i+j)/2; GKdQ  
file://swap OI;0dS  
SortUtil.swap(data,pivotIndex,j); yQb^]|XG  
# JHicx\8l  
int k=partition(data,i-1,j,data[j]); zOA{S~>  
SortUtil.swap(data,k,j); nWpqAb  
if((k-i)>1) quickSort(data,i,k-1); WCxt-+#  
if((j-k)>1) quickSort(data,k+1,j); oLVy?M%{P  
H%NP4pK  
} ~M`-sSjZs  
/** 1<a+91*=e  
* @param data x,YC/J  
* @param i ;taTdzR_  
* @param j YCod\}3  
* @return HNN,1MN  
*/ nxH=Ut7{  
private int partition(int[] data, int l, int r,int pivot) { |@KW~YlE  
do{ D?~`L[}I!}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |&Gm.[IX;q  
SortUtil.swap(data,l,r); s.z(1MB]  
} (Qmpz  
while(l SortUtil.swap(data,l,r); ju#/ {V;D  
return l; GkqKIs  
} 9:zW$Gt&  
|x*~PXb  
} c6gRXp'ID  
1HYrJb,d  
改进后的快速排序: :f (UZmV$  
b|| c^f  
package org.rut.util.algorithm.support; bmN'{09@  
En$-,8\%  
import org.rut.util.algorithm.SortUtil; F?Cx"JYix  
_r+2o-ZR  
/** $(pzh:|  
* @author treeroot *gMo(-tN  
* @since 2006-2-2 nDx}6}5)  
* @version 1.0 <PL94  
*/ SwHrHj  
public class ImprovedQuickSort implements SortUtil.Sort { o/273I  
d*80eB9P  
private static int MAX_STACK_SIZE=4096; \zioIfHm  
private static int THRESHOLD=10; >Qg`Us#y  
/* (non-Javadoc) jyRSe^x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _bB:1l?V  
*/ [5>f{L!<T<  
public void sort(int[] data) { `tKrTq>  
int[] stack=new int[MAX_STACK_SIZE]; 4PG]L`J{  
\fG?j@Qx  
int top=-1; Htd-E^/  
int pivot; X5i?B b.  
int pivotIndex,l,r; `l+{jrRb<  
@-y.Y}k#$~  
stack[++top]=0; UMsJg7~  
stack[++top]=data.length-1; 5tUp[/]pl  
h^ wu8E   
while(top>0){ ^PDz"L<*  
int j=stack[top--]; RGd@3OjN  
int i=stack[top--]; aOZSX3;wg  
vAZc.=+ >  
pivotIndex=(i+j)/2; +\~.cP7[  
pivot=data[pivotIndex]; :%ms6j/B&V  
Sx{vZS3  
SortUtil.swap(data,pivotIndex,j); J8Bz|.@Q  
]6)^+(zU  
file://partition "w3#2q&  
l=i-1; pC<~\RR  
r=j; 1FC'DH!  
do{ A/eZnsk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eZpyDw C{  
SortUtil.swap(data,l,r); OxGKtnAjf  
} ( )K,~  
while(l SortUtil.swap(data,l,r); 1#LXy%^tO  
SortUtil.swap(data,l,j); :^~I@)"ov  
+[386  
if((l-i)>THRESHOLD){ 7,0^|P  
stack[++top]=i; ia#Z$I6  
stack[++top]=l-1; tKtKW5n~  
} H +Dv-*i  
if((j-l)>THRESHOLD){ 3ZRi@=kWz  
stack[++top]=l+1; B->3/dp2c'  
stack[++top]=j; )BI6nU  
} rH@ {[~p  
m~`d<RM/  
} rqJ'm?>cr  
file://new InsertSort().sort(data); N]gJ( g  
insertSort(data); hgt@Mb   
} }6zo1"  
/** G Y??q8  
* @param data N<&"_jzm  
*/ >fG=(1"  
private void insertSort(int[] data) { -3-*T)  
int temp; ?U+^ctwv7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {C+blzh6  
} Wtl/xA_  
} D c5tRO  
} >TZ 'V,  
iveJh2!#<  
} 5]_m\zn=  
xz!b@5DR'%  
归并排序: @ol}~&"  
S0-f_,(  
package org.rut.util.algorithm.support; }4'5R  
8%C7!l q  
import org.rut.util.algorithm.SortUtil; S#km`N`  
@ \{L%y%a0  
/** ybsQ[9_36  
* @author treeroot @E Srj[  
* @since 2006-2-2 aU&p7y4C@  
* @version 1.0 3$<u3Zi6  
*/  AT@m_d  
public class MergeSort implements SortUtil.Sort{ 7X+SK&PX  
Tp vq5Cz  
/* (non-Javadoc) K&T[F!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [4p~iGC  
*/ b)+nNqY|  
public void sort(int[] data) { .`./MRC  
int[] temp=new int[data.length]; 1Q[I$=-F  
mergeSort(data,temp,0,data.length-1); "cJ))v-'  
} ;U+4!N  
\gz(C`4{j  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^,W;dM2  
int mid=(l+r)/2; 5UWj#|t  
if(l==r) return ; HpbSf1VvAf  
mergeSort(data,temp,l,mid); 2bu,_<K.  
mergeSort(data,temp,mid+1,r); + Cf"rN  
for(int i=l;i<=r;i++){ j@g`Pm%u`  
temp=data; 1f 3c3PJ  
} [)efh9P*  
int i1=l; S($8_u$U  
int i2=mid+1; Oy(f h%k#  
for(int cur=l;cur<=r;cur++){ Jd]kg,/  
if(i1==mid+1) eyM<#3\\S  
data[cur]=temp[i2++]; /x2-$a:<  
else if(i2>r) =&%}p[ 3g  
data[cur]=temp[i1++]; V47z;oMXct  
else if(temp[i1] data[cur]=temp[i1++]; TH[xSg  
else AW{"9f4  
data[cur]=temp[i2++]; .wH`9aq;5@  
} <'y}y}%  
} rdQKzJiX=U  
P8& BtA  
} hQWo ]WF(J  
Mz59ac  
改进后的归并排序: azK7kM~  
?nf!s J'm  
package org.rut.util.algorithm.support; =6.4  
/)+V(Jlu  
import org.rut.util.algorithm.SortUtil; T`ofj7$:  
G 6r2 "  
/** j\hI, mc  
* @author treeroot d76nyQKK  
* @since 2006-2-2 a:v5(@8  
* @version 1.0 LE@<)}Au^  
*/ QUQw/  
public class ImprovedMergeSort implements SortUtil.Sort { Am'%tw ~  
M6nQ17\{  
private static final int THRESHOLD = 10; `[)!4Jb  
_^%DfMP3i\  
/* -- >q=hlA  
* (non-Javadoc) T]_]{%z  
* "26=@Q^Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R$|"eb5  
*/ 5&C:&=Y  
public void sort(int[] data) { m%ec=%L9  
int[] temp=new int[data.length]; !B*l'OJw  
mergeSort(data,temp,0,data.length-1); +nAbcBJAl  
} 4*U5o!w1{  
e 48N[p  
private void mergeSort(int[] data, int[] temp, int l, int r) { R:+cumHr  
int i, j, k; Be$v%4  
int mid = (l + r) / 2; rv?4S`Z,x$  
if (l == r) 3< 'bi}{  
return; 1m~-q4D)V  
if ((mid - l) >= THRESHOLD) W9D~:>^YP  
mergeSort(data, temp, l, mid); <5 )F9.$  
else M*gbA5  
insertSort(data, l, mid - l + 1); ln1!%B;  
if ((r - mid) > THRESHOLD) v\Y8+dD  
mergeSort(data, temp, mid + 1, r); zJ*(G_H  
else {*PbD;/f  
insertSort(data, mid + 1, r - mid); WGwIc7  
1IPRI<1U  
for (i = l; i <= mid; i++) { f1$'av  
temp = data; <9dfbI)  
} YB}m1 g`  
for (j = 1; j <= r - mid; j++) { 4{lrtNd~K  
temp[r - j + 1] = data[j + mid]; ^TZ`1:oL#  
} ;Yve m  
int a = temp[l]; +HT?> k  
int b = temp[r]; H$ZLtPv5  
for (i = l, j = r, k = l; k <= r; k++) { 91#rP|88;  
if (a < b) { ;5 p;i 8m  
data[k] = temp[i++]; wJc`^gj  
a = temp; :.P{}\/  
} else { @ogj -ol&  
data[k] = temp[j--]; }&LVD$Bz  
b = temp[j]; R>D[I.  
} R wTzS;  
} <kCOg8<y :  
} @P )2ZGG  
Di"Tv<RlQ  
/** "wR1=&gk  
* @param data 8l l}"  
* @param l e>2KW5.  
* @param i (O$il  
*/ eH ]9"^> o  
private void insertSort(int[] data, int start, int len) { at+Nd K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]iY O}JuX  
} o~{rZ~  
} ' ~ 1/*F%8  
} nv <t$r  
} .% 79(r^  
^WkqRs  
堆排序: nB;[;dC z  
&+]-e;[  
package org.rut.util.algorithm.support; 9e*o$)j_  
m-2!r*(zt  
import org.rut.util.algorithm.SortUtil; nX_w F`n"  
8ZF!}kb0F  
/** JT! Cb$!  
* @author treeroot ~p`[z~|  
* @since 2006-2-2 |ju+{+  
* @version 1.0 <U y $b4h  
*/ M%YxhuT0  
public class HeapSort implements SortUtil.Sort{ eiQ42x@Z  
YB1Jv[  
/* (non-Javadoc) 4:= VHd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hTQ8y10a  
*/ (?x R<]~g*  
public void sort(int[] data) { y8ODoXk  
MaxHeap h=new MaxHeap(); ,R\ex =c  
h.init(data); N*f ]NCSi  
for(int i=0;i h.remove(); w\RYxu?  
System.arraycopy(h.queue,1,data,0,data.length); P=aYwmC  
} TbD $lx3>  
. {vMn0c  
private static class MaxHeap{ A*~BkvPr  
j+PLtE   
void init(int[] data){ PA*1]i#2M=  
this.queue=new int[data.length+1]; 7_R[ =t  
for(int i=0;i queue[++size]=data; ?3%r:g4  
fixUp(size); y>X(GF^  
} Px3I+VP  
} <@$+uZt+  
Ss3~X90!*B  
private int size=0; 3Rhoul[S  
+NJIi@  
private int[] queue; >0UY,2d  
9PUobV_^Wo  
public int get() { mT/^F{c  
return queue[1]; )3WUyD*UZN  
} }9 ]7V<  
:PK2! 0nK  
public void remove() { "A*;V  
SortUtil.swap(queue,1,size--); {"2Hv;x  
fixDown(1); <TTBIXV  
} EbeSl+iMx_  
file://fixdown DX^8w?t  
private void fixDown(int k) { 3+\Zom4  
int j; Z*b$&nM  
while ((j = k << 1) <= size) { <G0Ut6J>  
if (j < size %26amp;%26amp; queue[j] j++; Z2 Vri  
if (queue[k]>queue[j]) file://不用交换 `An p;el  
break; !+z&] S3s  
SortUtil.swap(queue,j,k); D~FIv  
k = j; Y>T<Qn^D  
} ::_bEmk  
} J/QqwoR  
private void fixUp(int k) { ($Op*bR  
while (k > 1) { e)y+]  
int j = k >> 1; /#z"c]#  
if (queue[j]>queue[k]) C[';B)a  
break; ,vo]WIQ\:  
SortUtil.swap(queue,j,k); bk1.H@8  
k = j; yFn~rv|&G  
} ILx4 [m7  
} )%b 5uZ  
Vry*=X &Q  
} 2r!- zEV  
qnb/zr)p  
} hE E1i  
oJ tmd}  
SortUtil: ;<*%BtD?  
j rxq558  
package org.rut.util.algorithm; 1>/ iYf  
Qp7F3,/#  
import org.rut.util.algorithm.support.BubbleSort; YCVT0d  
import org.rut.util.algorithm.support.HeapSort; <(_Tanx9Q  
import org.rut.util.algorithm.support.ImprovedMergeSort; {6O} E9  
import org.rut.util.algorithm.support.ImprovedQuickSort; P @J)S ?  
import org.rut.util.algorithm.support.InsertSort; ~xv3R   
import org.rut.util.algorithm.support.MergeSort; K%W;-W*'  
import org.rut.util.algorithm.support.QuickSort; zf]e"e  
import org.rut.util.algorithm.support.SelectionSort; (w#)|9Cxm  
import org.rut.util.algorithm.support.ShellSort; 4 aE{}jp1  
M(yWE0 3  
/** &^w "  
* @author treeroot m?gGFxo  
* @since 2006-2-2 YS@T Q?  
* @version 1.0 j;qV+Rq]t  
*/ ;<GK{8  
public class SortUtil { *7=`]w5k1  
public final static int INSERT = 1; PJ=|g7I  
public final static int BUBBLE = 2; c^cr_ i  
public final static int SELECTION = 3; `Z#':0Z  
public final static int SHELL = 4; /MMnW$)  
public final static int QUICK = 5; #C'E'g0  
public final static int IMPROVED_QUICK = 6; *VH Wvj  
public final static int MERGE = 7; pN_%>v"o  
public final static int IMPROVED_MERGE = 8; Pe-rwM  
public final static int HEAP = 9; 8_ascvs5  
O)DAYBv^  
public static void sort(int[] data) { _;%l~q/  
sort(data, IMPROVED_QUICK); x}O,xquY  
} R+t]]n6#  
private static String[] name={ `mI5Z*]-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8GRB6-.h  
}; H}lz_#Z  
Tm9sQ7Oj(  
private static Sort[] impl=new Sort[]{ ?`xm_udc  
new InsertSort(), zk!7TUZ">w  
new BubbleSort(), %"=GQ3u[  
new SelectionSort(), i`Qa7  
new ShellSort(), 9 ~$E+ m(  
new QuickSort(),  ;q5|If  
new ImprovedQuickSort(), H|7XfM  
new MergeSort(), azNv(|eeJL  
new ImprovedMergeSort(), *wsZ aQ  
new HeapSort() 4<vi@,s  
}; I(WIT=Wi<  
j6};K ~N`  
public static String toString(int algorithm){ $RB p!7  
return name[algorithm-1]; @nMVs6  
} 2s> BNWTU  
^7*7^<  
public static void sort(int[] data, int algorithm) { MslgQmlM  
impl[algorithm-1].sort(data); Q, "8Ty  
} 9ZG:2ncdJ  
lFduX D  
public static interface Sort { xX9snSGz  
public void sort(int[] data); dz>Jl},`k  
} X 5X D1[  
H:9G/Nev  
public static void swap(int[] data, int i, int j) { S{v]B_N[M  
int temp = data; RnU7|p{  
data = data[j]; [clwmx  
data[j] = temp; A|]#b?-  
} 'x<oILOG  
} eMdf [eS  
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