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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。 T sJ71  
插入排序: &$qIJvMiK  
*D7oHwDU  
package org.rut.util.algorithm.support; gs@^u#O  
bx".<q(  
import org.rut.util.algorithm.SortUtil; h^ K>(x  
/** lvk*Db$  
* @author treeroot Gv(n2r  
* @since 2006-2-2 G0r(xP?  
* @version 1.0 .lc gM  
*/ brn>FFAwO  
public class InsertSort implements SortUtil.Sort{ _B]Bd@<w  
.= 8Es#  
/* (non-Javadoc) 5kv]k?   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xJvalb   
*/ r^\Wo7q  
public void sort(int[] data) { Dt]FmU  
int temp; /hyCR___  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =\<!kJ\yH  
} Lr>4~1:`  
}  ~#z b  
} y+VR D  
YGq-AB  
} 'Cywn^Ym#  
<DdzDbgax  
冒泡排序: klj.\wg/p{  
fli7Ow?M~  
package org.rut.util.algorithm.support; &cx]7:;  
)4/UzR$  
import org.rut.util.algorithm.SortUtil; j)O8&[y=  
~U4;YlQP  
/** 3j$,x(ua9  
* @author treeroot gem+$TFq  
* @since 2006-2-2 inx0W3d"T  
* @version 1.0 5z:/d`P[  
*/ *WXqN!:  
public class BubbleSort implements SortUtil.Sort{ .rbKvd?-}  
7)3cq}]O  
/* (non-Javadoc) Rv+p4RgA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CQ%yki  
*/ ["?WVXCF8|  
public void sort(int[] data) { j(=zc6m  
int temp; y/A<eHLy  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qT_E=)1  
if(data[j] SortUtil.swap(data,j,j-1); |a[ :L  
} _:;j)J0  
} 8 K>Ejr  
} _^0)T@  
} 4K*DEVS  
?{6[6T  
} FUTDR-q O  
m4@w M?  
选择排序: (wsvj61  
,TxZ:f`"  
package org.rut.util.algorithm.support; 6PI-"He  
> 'KQL?!F  
import org.rut.util.algorithm.SortUtil; >pl*2M&  
h?:Y\DlU'  
/** 6ypqnOTr  
* @author treeroot 0H{0aQQ  
* @since 2006-2-2 =8fZG t  
* @version 1.0 P1l@K2r  
*/ H}c, P('  
public class SelectionSort implements SortUtil.Sort { yo0?QRT  
5Gsj;   
/* &hYjQ&n  
* (non-Javadoc) 9qQFIw~S  
*  qz:_T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7u^6`P  
*/ xX.Ox  
public void sort(int[] data) { Fw5r\J87c  
int temp; j{'@g[HW  
for (int i = 0; i < data.length; i++) { BPd]L=,/  
int lowIndex = i; VU*{E  
for (int j = data.length - 1; j > i; j--) { _?2xIo  
if (data[j] < data[lowIndex]) {  '[#uf/~W  
lowIndex = j; c$'UfW  
} 0,;FiOp  
} !<2*B^   
SortUtil.swap(data,i,lowIndex); QrPWS-3~!  
} o&~z8/?LA  
} HF\L`dJX?  
uS|Zkuk[!  
} U%45qCU  
LVLh&9  
Shell排序: VuZmX1x)N  
aV(*BE/@F  
package org.rut.util.algorithm.support; ;o3 .<"  
xt"/e-h }  
import org.rut.util.algorithm.SortUtil; X>|.BvY|  
hoeTJ/;dm  
/** %r!  
* @author treeroot Z?hBn`.  
* @since 2006-2-2 j4}aK2[<  
* @version 1.0 IW1]H~1w  
*/ a<gzI  
public class ShellSort implements SortUtil.Sort{ =C\S6bF%  
Ruk6+U  
/* (non-Javadoc) `?6m0|\@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uX0wg  
*/ *} w.xt  
public void sort(int[] data) { u%[*;@;9+  
for(int i=data.length/2;i>2;i/=2){ {2:H`|x  
for(int j=0;j insertSort(data,j,i); "iZ-AG!C  
} "| Q&  
} _Wb-&6{  
insertSort(data,0,1); |_=jXf\TL  
} MB |(,{S  
6 3u'-Z"4  
/** Y]gt86  
* @param data @g=A\2  
* @param j UU ,)z  
* @param i vp_$6  
*/ tt[_+e\4  
private void insertSort(int[] data, int start, int inc) { Dk"M8_-_  
int temp; 462ae` 6l  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gaCGU<L  
} Z?Q2ed*j  
} B6pz1P?e}  
} Uq+ _#{2(  
i ('EBO  
} (7wR*vO^  
/1>  
快速排序: +|8Lt[^ux  
bn(Scl#@K  
package org.rut.util.algorithm.support; JZnWzqFw  
`i:0dVs  
import org.rut.util.algorithm.SortUtil; jh?7+(Cw  
=Fs LF  
/** Yptsq@s  
* @author treeroot h9-Ky@X`  
* @since 2006-2-2 7cy~qg  
* @version 1.0 #&:nkzd  
*/ eJA{]^Zf  
public class QuickSort implements SortUtil.Sort{ Iw:("A&~  
2Ee1mbZVw8  
/* (non-Javadoc) H'`(|$:|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9]w0zUOL6  
*/ 2&d&$Jg  
public void sort(int[] data) { (qP$I:Q4]v  
quickSort(data,0,data.length-1); qR<DQTO<  
} iQIw]*h^  
private void quickSort(int[] data,int i,int j){ 4a|Fx  
int pivotIndex=(i+j)/2; I7_D $a=  
file://swap -:>#w`H  
SortUtil.swap(data,pivotIndex,j); <`*P/V  
;X6y.1N~  
int k=partition(data,i-1,j,data[j]); H7= z%Y9y  
SortUtil.swap(data,k,j); #G=QL(f>/  
if((k-i)>1) quickSort(data,i,k-1); ~b[4'm@  
if((j-k)>1) quickSort(data,k+1,j); I`kp5lGD2  
bx^EaXj(r  
} kZ}u  
/** M\6`2q  
* @param data j*`!o/=LI  
* @param i _fCHj$I*]  
* @param j wg.fo:Q  
* @return z\Y^x 9  
*/ EM/+1 _u  
private int partition(int[] data, int l, int r,int pivot) { Z+W&C@Uw  
do{ +|<&#b0Xd  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,b(S=r  
SortUtil.swap(data,l,r); TkoXzG8yE<  
} 05 Q8`  
while(l SortUtil.swap(data,l,r); O mIBk  
return l; j/pQSlV  
} BQ:Kx_   
b[;3KmUB  
} da'E"HN@G~  
[5*-V^m2  
改进后的快速排序: l_-n&(N2<[  
gA1in  
package org.rut.util.algorithm.support; 5l/l]  
MxEAs}MDv  
import org.rut.util.algorithm.SortUtil; ,HkhKbQ  
xt,L* B  
/** MH;%Y"EI  
* @author treeroot mh7sY;SvM  
* @since 2006-2-2 vW-`=30  
* @version 1.0 PZ(<eJ>  
*/ AE4~M`6D  
public class ImprovedQuickSort implements SortUtil.Sort { tZCe?n]  
7QiCZcb\  
private static int MAX_STACK_SIZE=4096; ^r_lj$:+$  
private static int THRESHOLD=10; <4e*3WSG  
/* (non-Javadoc) 6Su@a%=j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u\6]^T6  
*/ ~P#zhHw  
public void sort(int[] data) { :t{vgi D9  
int[] stack=new int[MAX_STACK_SIZE]; YQ@6innT  
i;hc]fYb=K  
int top=-1; SKpPR;=q|:  
int pivot; <I%9O:R  
int pivotIndex,l,r; wV[V#KpX8-  
<h_P+ nz  
stack[++top]=0; 2ZG1n#  
stack[++top]=data.length-1; 4G8nebv  
>`<2}Me6  
while(top>0){ n?LIphc\  
int j=stack[top--]; CTkN8{2S  
int i=stack[top--]; rt^45~  
Ryq"\Q>+  
pivotIndex=(i+j)/2; #>:(#^Uu  
pivot=data[pivotIndex]; \FoxKOTp  
x:?a;muf  
SortUtil.swap(data,pivotIndex,j); Hg9.<|+yo  
4,U}Am1Q  
file://partition k<Tez{<  
l=i-1; Lubs{-5lk  
r=j; Rz zFhU#r  
do{ r[v-?W'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _MdZDhtm  
SortUtil.swap(data,l,r); &oeN#5Es8C  
} zd9]qo  
while(l SortUtil.swap(data,l,r); `B'4"=(  
SortUtil.swap(data,l,j); /iUUM t'  
P*SCHe'  
if((l-i)>THRESHOLD){ wt}%2x} x  
stack[++top]=i; IypWVr   
stack[++top]=l-1; dm2CA0   
} G;Wkm|  
if((j-l)>THRESHOLD){ Dr6s ^}}~n  
stack[++top]=l+1; fQQsb 5=i  
stack[++top]=j; afY_9g!\  
} e?!L}^f6X  
>:jM}*dnL  
} !{Q:(B#ec  
file://new InsertSort().sort(data); m4"N+_j  
insertSort(data); Ak6MPuBB-  
} 5 o#<`_=J  
/** JY2/YDJ  
* @param data V#NG+U.B  
*/ e"fN~`NhY  
private void insertSort(int[] data) { fVDDYo2\  
int temp; _%'L@[ H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zJ;>.0  
} 5{13 V*<  
} w; 4jx(  
} @~k5+Z  
E dn[cH7  
} i<T P:  
sdJ%S*)5G$  
归并排序: \ ]   
N0Efw$u  
package org.rut.util.algorithm.support; u5w&X8x  
F{k$Atb?g/  
import org.rut.util.algorithm.SortUtil; oW 1"%i%  
"l@A[@R  
/** E6Q]A~  
* @author treeroot MpO RGd  
* @since 2006-2-2 e74zR6  
* @version 1.0 E *F*nd]K  
*/ mZ~qG5@/F  
public class MergeSort implements SortUtil.Sort{ X^}A*4j  
TE^7P0bh  
/* (non-Javadoc) xvU]jl6d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9!9> ?Z  
*/ ;%' b;+  
public void sort(int[] data) { CjZZm^O  
int[] temp=new int[data.length]; `SV"ElRV  
mergeSort(data,temp,0,data.length-1); A1^Ga5 B>  
} CI`N8 f=v  
LA-_3UJx  
private void mergeSort(int[] data,int[] temp,int l,int r){ "EoDQT"0  
int mid=(l+r)/2; wGvhB%8K  
if(l==r) return ; [oV{83f  
mergeSort(data,temp,l,mid); E&*: jDg  
mergeSort(data,temp,mid+1,r); b1u}fp GF  
for(int i=l;i<=r;i++){ OL3UgepF  
temp=data; 9)`amhf>  
} WsR+Np@c  
int i1=l; G.g|jP'n  
int i2=mid+1; St@l]u9  
for(int cur=l;cur<=r;cur++){ 17}$=#SX  
if(i1==mid+1) %Rp8{.t7  
data[cur]=temp[i2++]; rK7W(D}  
else if(i2>r) "PMQyzl  
data[cur]=temp[i1++];  1,,|MW  
else if(temp[i1] data[cur]=temp[i1++]; %}q .cV  
else I&Jt> O4  
data[cur]=temp[i2++]; J~KX|QY.S  
} brh=NAzt  
} +2RNZEc  
ebC)H  
} +4et7  
c%z'xM  
改进后的归并排序: F8<"AI  
g5+7p@'fV  
package org.rut.util.algorithm.support; _;hf<|c  
-/ +#5.`1  
import org.rut.util.algorithm.SortUtil; ExVDkt0  
s~^}F+n  
/** {$d<1y^  
* @author treeroot *6Q|}b[qcD  
* @since 2006-2-2 g # S0V  
* @version 1.0 ,zhJY ?sk  
*/ 0*8TS7.3  
public class ImprovedMergeSort implements SortUtil.Sort { Fv8f+)k)Z~  
dRW$T5dac  
private static final int THRESHOLD = 10; "Y;}G lE  
R_ ZK0ar  
/* |A\a4f 'G  
* (non-Javadoc) OcmRZ  
* <YB9Ac~}z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vDFGd-S  
*/ 0|c}p([~  
public void sort(int[] data) { +lE90y  
int[] temp=new int[data.length]; k7@t{Cu0D&  
mergeSort(data,temp,0,data.length-1); Dnw|%6Y  
} V`kMCE;?l  
DF_X  
private void mergeSort(int[] data, int[] temp, int l, int r) { $, 3J7l3  
int i, j, k; CrC =A=e  
int mid = (l + r) / 2; QA3/   
if (l == r) EON:B>2a  
return; 5] 5 KB;  
if ((mid - l) >= THRESHOLD) s58 C2  
mergeSort(data, temp, l, mid); V5i*O3a~   
else $q$7^ r@  
insertSort(data, l, mid - l + 1); P 43P]M2  
if ((r - mid) > THRESHOLD) U75Jp%bL  
mergeSort(data, temp, mid + 1, r); iK5_u2]Q  
else =K\r-'V  
insertSort(data, mid + 1, r - mid); up>c$jJ  
A9BX_9}]  
for (i = l; i <= mid; i++) { s{0aBeq  
temp = data; H+E$:)gN  
} S35~Cp  
for (j = 1; j <= r - mid; j++) { ^r6!l.  
temp[r - j + 1] = data[j + mid]; ,:LA.o}h  
} iOAbaPN  
int a = temp[l]; F$BbYf2i  
int b = temp[r]; Dre2J<QL  
for (i = l, j = r, k = l; k <= r; k++) { EU7|,>a  
if (a < b) { br-]fE.be  
data[k] = temp[i++]; d.UQW yLG  
a = temp; zk-.u}RBFG  
} else { JjaoOe  
data[k] = temp[j--]; M?m,EQh.  
b = temp[j]; -Eu6U`"(  
} |L2SFB?d=  
} hj'(*ND7z  
} *g?Po+ef%  
o1 M$.*  
/** (hiyNMC  
* @param data ^8.]d~j  
* @param l #@<9S{F  
* @param i hxQqa 0B  
*/ y;_% W  
private void insertSort(int[] data, int start, int len) { ck?YI]q|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |$?bc3  
} /|* Y2ETOr  
} (L^]Lk x)  
} EoK~S\dS  
} I f\fLhM  
SkmT`*v@  
堆排序: sI{ M  
!pD*p)`s  
package org.rut.util.algorithm.support; ?@E!u|]K  
'7XIhN9  
import org.rut.util.algorithm.SortUtil; /~zai}  
Na:w]r:y  
/** M5 <@~V/[  
* @author treeroot z11O F  
* @since 2006-2-2 C.FI~Z  
* @version 1.0 Oil?JI Hq  
*/ %}%Qc6.H  
public class HeapSort implements SortUtil.Sort{ ZMel{w`n  
Uu`9 "  
/* (non-Javadoc) gP;&e:/3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6_FE4RR[  
*/ +F^^c2E  
public void sort(int[] data) { [PDNwh0g5  
MaxHeap h=new MaxHeap(); u fw]=h)  
h.init(data); ME*LH r,  
for(int i=0;i h.remove(); (L/_^!ZX  
System.arraycopy(h.queue,1,data,0,data.length); "vOwd.(?N  
} %^ !,t:d  
]@phF _  
private static class MaxHeap{ |&zz,+E  
i%0ur}p  
void init(int[] data){ ]?!mS[X  
this.queue=new int[data.length+1]; d'NIV9P`j]  
for(int i=0;i queue[++size]=data; Zcx`SC-0  
fixUp(size); )8$=C#qC[  
} ^SF&=NpV  
} zd >t-?g  
NgP&.39U  
private int size=0; 5Ou`z5S\k  
1=d6NX)B  
private int[] queue; q1d}{DU  
hYG6 pTCb  
public int get() { K3#@SY j  
return queue[1]; J;8IY=  
} j}.\]$J  
|}Nn!Sj>#;  
public void remove() { Ws|j#X<  
SortUtil.swap(queue,1,size--); JR@`2YP-  
fixDown(1); 7o# I,d~  
} w"Gm;B4  
file://fixdown a%/9v"}  
private void fixDown(int k) { 8 Hg+H=?  
int j; L.*M&Ry  
while ((j = k << 1) <= size) { \Je0CD=e`  
if (j < size %26amp;%26amp; queue[j] j++; i@"@9n~  
if (queue[k]>queue[j]) file://不用交换 iJ1"at  
break; $5aV:Z3P  
SortUtil.swap(queue,j,k); e> e}vZlX  
k = j; e D?tLj  
} oAODp!_c  
} YNKHN2E8  
private void fixUp(int k) { P}n_IV*@  
while (k > 1) { N8F~8lTi  
int j = k >> 1; e>+i>/Fn{h  
if (queue[j]>queue[k]) 5Ha9lM2gh  
break; RO+GK`J  
SortUtil.swap(queue,j,k); ` Mjj@[  
k = j; /R]U}o^/(%  
} J\twZ>w~0  
} #Z?A2r!1  
[=6]+V83M  
} i [7\[  
LDgrR[  
} }~e8e   
_S<3\%(0  
SortUtil: jS]ru-5.  
/M1ob:m  
package org.rut.util.algorithm; g:g\>@Umo  
 VA6}  
import org.rut.util.algorithm.support.BubbleSort; N)uSG&S:  
import org.rut.util.algorithm.support.HeapSort; 7zXvnxYE  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4Tb #fH%  
import org.rut.util.algorithm.support.ImprovedQuickSort; SYAyk  
import org.rut.util.algorithm.support.InsertSort; ?GKb7Oj  
import org.rut.util.algorithm.support.MergeSort; xgVeN["  
import org.rut.util.algorithm.support.QuickSort; n4;.W#\  
import org.rut.util.algorithm.support.SelectionSort; ?PuBa`zDE  
import org.rut.util.algorithm.support.ShellSort; vYwYQG  
ysQ_[ ]/  
/** Qp)v?k ]  
* @author treeroot ;#g"(  
* @since 2006-2-2 ` 06;   
* @version 1.0 M'?,] an  
*/ hO\<%0F  
public class SortUtil { >K_(J/&p  
public final static int INSERT = 1; |GdUL%1hnC  
public final static int BUBBLE = 2; x|/|jzJSX  
public final static int SELECTION = 3; T,,WoPU8t  
public final static int SHELL = 4; cvn@/qBq*t  
public final static int QUICK = 5; dP9qSwTa  
public final static int IMPROVED_QUICK = 6; {2O1"|s ,  
public final static int MERGE = 7; Ec!"O3%!M^  
public final static int IMPROVED_MERGE = 8; z`.<U{5  
public final static int HEAP = 9; dN$0OS`s[  
@E&J_un  
public static void sort(int[] data) { (yH'{6g\  
sort(data, IMPROVED_QUICK); 9'fQHwsJ  
} q}i]'7  
private static String[] name={ /C:Y94B-z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xT3BHnQ(  
}; ~Otq %MQ  
&PR5q 7  
private static Sort[] impl=new Sort[]{ pR*VdC _mY  
new InsertSort(), Kfbb)?  
new BubbleSort(), NH[kNi'  
new SelectionSort(), ;,hwZZA  
new ShellSort(), 9g9HlB&Ze  
new QuickSort(), z6KCv(zvB  
new ImprovedQuickSort(), B{QBzx1L9c  
new MergeSort(), iFd+2S%  
new ImprovedMergeSort(), ;"a=gr  
new HeapSort() wg9t)1k{e  
}; 3lf=b~Zi)  
y*4=c _Z  
public static String toString(int algorithm){ ]&o$b]  
return name[algorithm-1]; "|x^|n8i  
} e),q0%5  
hCi60%g/n  
public static void sort(int[] data, int algorithm) { R|6Cv3:  
impl[algorithm-1].sort(data); W =D4r  
} KI.q@zO6|  
8EZ$g<}  
public static interface Sort { g{7.r-uu  
public void sort(int[] data); :N:yLd} &  
} :">!r.Q  
9e<.lb^tP  
public static void swap(int[] data, int i, int j) { B al`y  
int temp = data; Mer/G2#&  
data = data[j]; ^ sOQi6pL  
data[j] = temp; DHy q^pJ  
} `XJG(Oas\  
} 4R#chQ  
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