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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。 vGMOXbq4&  
插入排序: lCs8`bYU  
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package org.rut.util.algorithm.support; `peJ s~V  
9@&Z`b_  
import org.rut.util.algorithm.SortUtil; +#*z"a`  
/** qytGs@p_  
* @author treeroot \~1zAiSd>#  
* @since 2006-2-2 rF j)5~  
* @version 1.0 )9sr,3w  
*/ Wx\"wlJ7.3  
public class InsertSort implements SortUtil.Sort{ JNz"lTt>[g  
4~D>oNx4  
/* (non-Javadoc) %A[p!U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1V9X(uP  
*/ Q)|LiCR,  
public void sort(int[] data) { e4_aKuA  
int temp; N55=&-p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &oEq&  
} i:Ct6[  
} qt&"cw  
} JSZ j0_ B  
5FR#_}k]_F  
} 6+d"3-R.  
d/99!+r  
冒泡排序: _ JJ0pc9t  
fkUH]CdaB  
package org.rut.util.algorithm.support; nQYS{`hk  
;s/b_RN  
import org.rut.util.algorithm.SortUtil; BU?MRcHC  
rL+n$p X-  
/** 7 V1k$S(  
* @author treeroot gm8Tm$fY  
* @since 2006-2-2  $.]t1e7s  
* @version 1.0 RxeRO2  
*/ )A+j  
public class BubbleSort implements SortUtil.Sort{ s^X/ Om  
vi.AzO  
/* (non-Javadoc) D]`B;aE>A*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bb_jD^  
*/ OcS`Fxs  
public void sort(int[] data) { 6V?&hq&t  
int temp; |JQP7z6j]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ XGl13@=O  
if(data[j] SortUtil.swap(data,j,j-1); 8'\,&f`Y  
} e/#&5ISk  
} ?GfA;O  
} XI(@O)  
} =gv/9ce)3  
cj_?*  
} I;4CvoT  
}AfPBfgC1z  
选择排序: $aI MQ[(  
\gQ+@O&+  
package org.rut.util.algorithm.support; S<9d^= a  
l@F e(^5E  
import org.rut.util.algorithm.SortUtil; umrI4.1c  
vl(v1[pU  
/** t-'GRme  
* @author treeroot iiDkk  
* @since 2006-2-2 E4@fP] R+  
* @version 1.0 !eoec2h#5  
*/ v#2qwd3x  
public class SelectionSort implements SortUtil.Sort { q9(}wvtr  
!3v"7l{LF  
/* d<m>H$\Dm  
* (non-Javadoc) tU2;Wb!Y  
* '>3RZ& O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zLK ~i>aW  
*/ +VCo=oA  
public void sort(int[] data) { e Em0c]]9  
int temp; qtQ:7WO  
for (int i = 0; i < data.length; i++) { r.5Js*VX!  
int lowIndex = i;  Kj|F  
for (int j = data.length - 1; j > i; j--) { )Nd:PnA  
if (data[j] < data[lowIndex]) { 0P/LW|16  
lowIndex = j; ? bg pUv  
} Kqu7DZ+W  
} 0J-ux"kfI  
SortUtil.swap(data,i,lowIndex); >-+X;0&  
} s1apHwJ -  
} Ntrn("!  
LZ]pyoi  
} hQx e0Pdt  
zate%y  
Shell排序: zO]dQ$r\Z  
x=+I8Q4:  
package org.rut.util.algorithm.support; 54j $A  
#,{v Js~  
import org.rut.util.algorithm.SortUtil; Lcb5 9Cs6e  
M_)T=s *  
/** mpAh'f4$*  
* @author treeroot LMzYsXG*[  
* @since 2006-2-2 J(VZa_  
* @version 1.0 ebVfny$D  
*/ *Yjs$'_2  
public class ShellSort implements SortUtil.Sort{ NdQ?3'WJ  
jC8BLyGE_  
/* (non-Javadoc) ^Wz{su2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yYtki  
*/ 'Em($A (  
public void sort(int[] data) { Di=6.gm[<  
for(int i=data.length/2;i>2;i/=2){ O]!DNN  
for(int j=0;j insertSort(data,j,i); Tj+WO6#V  
} 5X-{|r3q  
} n_2 LkW<?  
insertSort(data,0,1); 4rdrl  
} #!@ ]%4  
JPzPL\  
/** .8~ x;P6  
* @param data 3Ab$  
* @param j J>v>6OC6i  
* @param i 1'B?f# s  
*/ 4"=pcHNV  
private void insertSort(int[] data, int start, int inc) { (o=iX,@'2  
int temp; Q{kuB+s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Nh-* Gt?  
} Vi-@z;k  
} [0@i,7{ZqE  
} KJSy7F  
Wd<}|?R  
} 9V!K. _Cb  
,%<77LE  
快速排序: *E6 p=  
Bqj *{m  
package org.rut.util.algorithm.support; f& *E;l0  
r?7 ^@  
import org.rut.util.algorithm.SortUtil; $a1.c;NE'  
4B(qVf&M  
/** BpE[9N  
* @author treeroot ?2c:|FD  
* @since 2006-2-2 Iqv 5lo .  
* @version 1.0 A;PV,2|X  
*/ |.yRo_  
public class QuickSort implements SortUtil.Sort{ 2US8<sq+  
v4^VYi,.-  
/* (non-Javadoc) 0\A[a4crj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VgL<uxq  
*/ r]{:{Z  
public void sort(int[] data) { ;kA2"c]m  
quickSort(data,0,data.length-1); Ok\UIi~  
} wEyh;ID3#  
private void quickSort(int[] data,int i,int j){ ]F! ,Jx  
int pivotIndex=(i+j)/2; }=5(*Vg  
file://swap $>Do&TU   
SortUtil.swap(data,pivotIndex,j); <L 0_< T  
s3S73fNOk  
int k=partition(data,i-1,j,data[j]); I.x>mN -0  
SortUtil.swap(data,k,j); <jjaqDSmz  
if((k-i)>1) quickSort(data,i,k-1); K;O\Pd  
if((j-k)>1) quickSort(data,k+1,j); ps [rYy  
qr1^i1%\  
} BZsxf'eN'  
/** aqgSr|  
* @param data [;+YO)  
* @param i EY(4 <;)  
* @param j NKN!X/P  
* @return {fs(+ 0ei  
*/ n"vI>_|G  
private int partition(int[] data, int l, int r,int pivot) { &40d J~SQ  
do{ jkd8M;Jw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N0NMRU]zT  
SortUtil.swap(data,l,r); bcg)K`'N  
} uv4jbg}Z+3  
while(l SortUtil.swap(data,l,r); ~-x\E#(  
return l; x8t1g,QA  
} ,;;~dfHm  
z841g `:C  
} DzMkeX  
Zf! 7pM  
改进后的快速排序: nLQJ~("  
.7q#{`K^=  
package org.rut.util.algorithm.support; L;;x%>  
~V4|DN[I  
import org.rut.util.algorithm.SortUtil; [aW#7  
]b)(=-;>  
/** B Xp3u|t  
* @author treeroot oz--gA:g  
* @since 2006-2-2 6 AY%o nY  
* @version 1.0 6$Y1[  
*/  E2l.  
public class ImprovedQuickSort implements SortUtil.Sort { 0td;Ag  
_eS*e-@O5  
private static int MAX_STACK_SIZE=4096; AkF3F^  
private static int THRESHOLD=10; *niQ*A  
/* (non-Javadoc) Fc Cxr@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1RLSeT  
*/ BehV :M  
public void sort(int[] data) { lB3X1e9  
int[] stack=new int[MAX_STACK_SIZE]; D  UeT  
&yuerNK  
int top=-1; ZsE8eD  
int pivot; BC^WPr  
int pivotIndex,l,r; lsd\ `X5,  
1E(pJu'K  
stack[++top]=0; d)@M MF  
stack[++top]=data.length-1; 6_7d1.wv9  
Ek:u[Uw\  
while(top>0){ se-}d.PwL  
int j=stack[top--]; 6%>0g^`)9Y  
int i=stack[top--]; q\\J9`Q$J  
gDH x+"?  
pivotIndex=(i+j)/2; K4KmoGb  
pivot=data[pivotIndex]; 9%8T09I!  
W cnYD)  
SortUtil.swap(data,pivotIndex,j); YV9%^ZaN7  
(NP=5lLH  
file://partition Adh CC13B  
l=i-1; IkupW|}rc  
r=j; x&sF_<[  
do{ ({)_[dJ'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q /#O :Q  
SortUtil.swap(data,l,r); $O[ut.   
} ( %bfNs|  
while(l SortUtil.swap(data,l,r); RZ -w,~  
SortUtil.swap(data,l,j); 6eb5q/  
7}xKiHh:  
if((l-i)>THRESHOLD){ ZyTah\yPM  
stack[++top]=i; IMBqy-q  
stack[++top]=l-1; RGcT  
} U6{ RHS[  
if((j-l)>THRESHOLD){ IBR;q[Dj}  
stack[++top]=l+1; k,H4<")H  
stack[++top]=j; wvfCj6}S &  
} dJkT Hmw  
:=* -x  
} V[% r5!83H  
file://new InsertSort().sort(data); R,(^fM  
insertSort(data); !R-UL#w9W'  
} <1ai0]  
/** HtMlSgx,8>  
* @param data cq/)Yff@:  
*/ :x_l"y"  
private void insertSort(int[] data) { W1#3+  
int temp; &#WTXTr0=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x9uA@$l^|  
}  iGR(  
} 0FXM4YcrJO  
} bw@tA7Y  
a].Bn#AH!C  
} ]UMwpL&rY  
1~j.jv$  
归并排序: L&eO?I=,  
9"/{gf3D  
package org.rut.util.algorithm.support; H94$Xi"Bd  
9[:nW p^  
import org.rut.util.algorithm.SortUtil; luV%_[F  
`toSU>:  
/** GG7N!eZ  
* @author treeroot seJc,2Ex  
* @since 2006-2-2 f}*Xz.[bCp  
* @version 1.0 iud%X51  
*/ 9~N7hLT  
public class MergeSort implements SortUtil.Sort{ %e _WO,R  
-cG?lEh <  
/* (non-Javadoc) B3K%V|;z )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]SK(cfA`  
*/ e{"d6pF=  
public void sort(int[] data) { lk8VJ~2d  
int[] temp=new int[data.length]; |>VHV} 4)<  
mergeSort(data,temp,0,data.length-1); h1,J<B@  
} L&l> ?"_  
e7<~[>g)  
private void mergeSort(int[] data,int[] temp,int l,int r){ T%Z`:mf  
int mid=(l+r)/2; S!rUdxO  
if(l==r) return ; 7/Ew(X8Fs  
mergeSort(data,temp,l,mid); j+s8V-7(  
mergeSort(data,temp,mid+1,r); u6I# D _  
for(int i=l;i<=r;i++){ fE7Kv_N-%  
temp=data; vG<Mz?wr  
} Dt8eVWkN~  
int i1=l; .3$iOMCH  
int i2=mid+1; N#|c2n+  
for(int cur=l;cur<=r;cur++){ /bg8oB4  
if(i1==mid+1) ZWYwVAo  
data[cur]=temp[i2++]; Ey)ox$  
else if(i2>r) !m78/[LW  
data[cur]=temp[i1++]; k~Gjfo  
else if(temp[i1] data[cur]=temp[i1++]; NmK%k jCx  
else 28zt.9  
data[cur]=temp[i2++]; d d8^V_Kx  
} !5x"d7  
} F YcC2TM  
CKj3-rcF(  
} |`#[jHd  
Ie``W b=  
改进后的归并排序: (Iu5QLE  
=$f xK  
package org.rut.util.algorithm.support; 'tF<7\!  
K&Zdk (l)  
import org.rut.util.algorithm.SortUtil; 8iq~ha$]|  
jt?R a1Z  
/** z^ ~fVl  
* @author treeroot =n%?oLg^  
* @since 2006-2-2 ^]OD+v  
* @version 1.0 ]kc]YO7i%R  
*/ P%.9g  
public class ImprovedMergeSort implements SortUtil.Sort { V5R``T p  
\\)3:1X  
private static final int THRESHOLD = 10; 6VRVk7"  
2N`Vx3  
/* aNfgSo05@n  
* (non-Javadoc) 8> Gp #T  
* uPb9j;Q?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  RtK/bUa  
*/ VM|8HR7U  
public void sort(int[] data) { rY88xh^  
int[] temp=new int[data.length]; U.d*E/OR5  
mergeSort(data,temp,0,data.length-1); fFMG9]*  
} O`H[,+vm[  
wMei`svY  
private void mergeSort(int[] data, int[] temp, int l, int r) { yU&A[DZQ  
int i, j, k; 90M:0SH  
int mid = (l + r) / 2; ]oZ$,2#;~  
if (l == r) h|_G2p^J+"  
return; M`A bH19  
if ((mid - l) >= THRESHOLD) 4{*K%pv\  
mergeSort(data, temp, l, mid); ;z!~-ByzL  
else 2x'JR yef  
insertSort(data, l, mid - l + 1); to+jQ9q8  
if ((r - mid) > THRESHOLD) 0G;RMR':5  
mergeSort(data, temp, mid + 1, r); ai#0ZgO  
else [96|xe\s  
insertSort(data, mid + 1, r - mid); 7?b'"X"  
Kq{9 :G  
for (i = l; i <= mid; i++) { 4TUe*F@ ML  
temp = data; Ci=c"JdB  
} /\h&t6B1  
for (j = 1; j <= r - mid; j++) { DS-Kot(k(z  
temp[r - j + 1] = data[j + mid]; <"aPoGda  
} e$ E=n  
int a = temp[l]; 6SW:'u|90  
int b = temp[r]; SbrBlP: G  
for (i = l, j = r, k = l; k <= r; k++) { liPUK#  
if (a < b) { ^hTq~"  
data[k] = temp[i++]; YgrBIul  
a = temp; '^}l|(  
} else { mbSJ}3c"  
data[k] = temp[j--]; J1&G1\G|s=  
b = temp[j]; GiI2nHZc  
} c7'I'~  
} q48V|6X'q  
} 6d`6=D:  
7_n@iUG2n  
/** M {_`X  
* @param data KYd2=P6  
* @param l @I #@%"AW  
* @param i bZ:w_z[3=  
*/ |Ax~zk;  
private void insertSort(int[] data, int start, int len) { 3>/Yku)t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h5.u W8  
} 8BC}D+q  
} pOpie5)7X  
} v6TH-  
} -0Y8/6](  
{>>f5o 3  
堆排序: ]hN%~ ~$>  
A1>R8Zuhy  
package org.rut.util.algorithm.support; {}{|trr-E  
oF)+f4  
import org.rut.util.algorithm.SortUtil; / IAK'/  
{ ~FYiX  
/** gey`HhZp)  
* @author treeroot s 3Y \,9\  
* @since 2006-2-2 |'b=xeH.^<  
* @version 1.0 jW"C: {Ol;  
*/ NA!;#!  
public class HeapSort implements SortUtil.Sort{ B7_:,R.l  
)$i7b  
/* (non-Javadoc) VO/" ot  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pX*Oc6.0mu  
*/ ?UQE;0 B  
public void sort(int[] data) { ,d@.@a] `  
MaxHeap h=new MaxHeap(); VctAQ|h^  
h.init(data); DpoRR`  
for(int i=0;i h.remove(); b:Wl B[5  
System.arraycopy(h.queue,1,data,0,data.length); J'.U+XU  
} S_ e }>-  
V<?t( _Y  
private static class MaxHeap{ sq\oatMw[  
j^ex5A.& &  
void init(int[] data){ #p6#,PZ  
this.queue=new int[data.length+1]; 5<Xq7|Jt  
for(int i=0;i queue[++size]=data; y!)Z ^u  
fixUp(size); tAPqbi$a  
} 0r.*7aXu  
} 7.hn@_  
39BGwKXb  
private int size=0; khyn4   
w<tr<Pu'  
private int[] queue; pEw &i  
RiIJ#:6+^I  
public int get() { Ck/4h Z  
return queue[1]; Ti=~ycwi  
} NUX0=(k  
oost}%WxN  
public void remove() { Sz.jv#Y  
SortUtil.swap(queue,1,size--); =pF 6  
fixDown(1); #,0%g 1  
} .UU BAyjm  
file://fixdown oZA?}#DRl  
private void fixDown(int k) { '/Hx0]V  
int j; ix=HLF-0zC  
while ((j = k << 1) <= size) { gV9 1=Pj  
if (j < size %26amp;%26amp; queue[j] j++; C;y3?+6P$  
if (queue[k]>queue[j]) file://不用交换 O)kC[e4  
break; ~Q0gSazXFt  
SortUtil.swap(queue,j,k); n[[rI0]g  
k = j; d@8=%x:  
} w<| ^i*  
} pBG(%3PpW  
private void fixUp(int k) { eZ(<hE>  
while (k > 1) { x%jJvwb^|  
int j = k >> 1; `u 3to{  
if (queue[j]>queue[k]) $,bLK|<hi  
break; 6OkN(tL&.  
SortUtil.swap(queue,j,k); pkWzaf  
k = j; I;S[Ft8d  
} $RuJm\f  
} %}MZWf{  
x24  
} .>Gq/[c0|  
AhZ8B'Ee  
} s"*zyLUUo  
1NtN-o)N?  
SortUtil: >t<FG2  
c8v+eyn  
package org.rut.util.algorithm; IX7<  
P%]li`56-c  
import org.rut.util.algorithm.support.BubbleSort;  !NUsfd  
import org.rut.util.algorithm.support.HeapSort; Em N0K'x  
import org.rut.util.algorithm.support.ImprovedMergeSort; wyzj[PDS  
import org.rut.util.algorithm.support.ImprovedQuickSort; ):   
import org.rut.util.algorithm.support.InsertSort;  yS_,lS  
import org.rut.util.algorithm.support.MergeSort; ==F[5]?  
import org.rut.util.algorithm.support.QuickSort; :[3{-.c  
import org.rut.util.algorithm.support.SelectionSort; \Azl6`Em  
import org.rut.util.algorithm.support.ShellSort; 2$. ubA  
yQ?N*'}$  
/** c^S^"M|  
* @author treeroot X3NHQMI   
* @since 2006-2-2 dq%7A=-  
* @version 1.0 RY2`v pv  
*/ $?YRy_SI  
public class SortUtil { >wS52ng  
public final static int INSERT = 1; 8l-+ 4~mH  
public final static int BUBBLE = 2; "45O!AjP  
public final static int SELECTION = 3; QKDY:1]  
public final static int SHELL = 4; R?a)2jl  
public final static int QUICK = 5; JEL =,0J  
public final static int IMPROVED_QUICK = 6; GJ edW   
public final static int MERGE = 7; ;Oh4W<hH}  
public final static int IMPROVED_MERGE = 8; <i``#" /  
public final static int HEAP = 9; m=b~Wf39  
lG;RfDI-  
public static void sort(int[] data) { *G7$wW:?  
sort(data, IMPROVED_QUICK); D *RF._  
} qcEiJ}-  
private static String[] name={ Y0:y72mK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8`XT`H  
}; *|h-iA+9  
zA=gDuy3@  
private static Sort[] impl=new Sort[]{ .|}ogTEf  
new InsertSort(), PdcF  
new BubbleSort(), p&ytUT na  
new SelectionSort(), 8'Sw?FbVA/  
new ShellSort(), .%j&#(!  
new QuickSort(), D_ybgX?0:  
new ImprovedQuickSort(), Y O;N9wu3f  
new MergeSort(), Sd'!(M^k3  
new ImprovedMergeSort(), dtw1Am#Ci  
new HeapSort() ; {$9Sc $  
}; SUsD)!u_H  
s,XKl5'+8e  
public static String toString(int algorithm){ pV]m6! y&  
return name[algorithm-1]; fEf ",{I  
} s7e)Mt  
p8o ~  
public static void sort(int[] data, int algorithm) { jU |0!]  
impl[algorithm-1].sort(data); Y4e64`V)  
} h?5$-#q~  
 s.&ewf\  
public static interface Sort { C8>zr6)1  
public void sort(int[] data); M/C7<?&  
} gq~>S1  
Sr Z\]  
public static void swap(int[] data, int i, int j) { Vb*q^ v  
int temp = data; c-.t8X,5(~  
data = data[j]; rK )aR  
data[j] = temp; 2j&-3W$^  
} e@"1W  
} 6Ko[[?Lf[  
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