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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。 OD|&qsbL  
插入排序: aR $P}]H  
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package org.rut.util.algorithm.support; +__Rk1CVh  
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import org.rut.util.algorithm.SortUtil; &Y$rVBgQ  
/** d0 az#Yg!  
* @author treeroot 1cega1s3xR  
* @since 2006-2-2 qsx1:Ny 1  
* @version 1.0 L Jx g  
*/ ^\%%9jY  
public class InsertSort implements SortUtil.Sort{ v>R.ou(  
RJM(+5xQ|  
/* (non-Javadoc) 'Ud5;?{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EbHeP  
*/ ) |a5Qxz  
public void sort(int[] data) { @hPbD?)M  
int temp; 9mZ1 a6,x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HL]?CWtGP  
} I%`2RXBt3^  
} &D#v0!e~x  
} 1;V5b+b  
107SXYdhI  
} G$b4`wt  
{[+gM?  
冒泡排序: \ZB;K~BV&  
3ssio-X  
package org.rut.util.algorithm.support; }2S \-  
<[bDNe["?  
import org.rut.util.algorithm.SortUtil; .wywO|  
19_F\32  
/** qMkP/BjV  
* @author treeroot l{4\Wn Va  
* @since 2006-2-2 gMbvHlT  
* @version 1.0 L~~aW0,  
*/ 5I14"Qf  
public class BubbleSort implements SortUtil.Sort{ &knnWm"  
Gex^\gf  
/* (non-Javadoc) PZs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hw Is7  
*/ ~A)$="  
public void sort(int[] data) { RfD$@q9  
int temp; yY+2;`CH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {mDaK&]Oh  
if(data[j] SortUtil.swap(data,j,j-1); =|V3cM4'  
} ?l/rg6mbI'  
} Dcf`+?3  
} }|d:(*  
} tkmW\  
tXx9N_/  
}  7)T+!>  
SO%5ts  
选择排序: $lQi0*s  
 <KpQu%2(  
package org.rut.util.algorithm.support; DuWP)#kg  
5^k#fl2  
import org.rut.util.algorithm.SortUtil; >Et?7@   
xl3U  
/** @l8?\^N  
* @author treeroot I6\3wU~).  
* @since 2006-2-2 ]k Pco4  
* @version 1.0 3O.-'U1K  
*/ :X#(T- !t  
public class SelectionSort implements SortUtil.Sort { 3 R m$  
]1K &U5p  
/* ;Cwn1N9S  
* (non-Javadoc) &Fi8@0Fh  
* VYwaU^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bMZ0%(q  
*/ /X?Nv^Hy  
public void sort(int[] data) { 8|l Yf%n>j  
int temp; 3B0%:Jj  
for (int i = 0; i < data.length; i++) { Kk,->q<1  
int lowIndex = i; lbPxZ'YO#  
for (int j = data.length - 1; j > i; j--) { )D^P~2  
if (data[j] < data[lowIndex]) { }LRAe3N%8  
lowIndex = j; ns3k{l#  
} H\^^p!^)  
} ..!yf e"5  
SortUtil.swap(data,i,lowIndex); s 2E}+ #  
} fkYQ3d,`  
} B}Qo8i7 z  
yP-Dj ,  
} oeIS&O.K  
)-9/5Z0v  
Shell排序: g (~&  
dcA0k  
package org.rut.util.algorithm.support; A-~)7-  
4 qnQF]4  
import org.rut.util.algorithm.SortUtil; 8177x7UG2[  
WRgz]=W3w  
/** T&c[m!}X|t  
* @author treeroot ql8:s>1T  
* @since 2006-2-2 Mk?9`?g.  
* @version 1.0 =:b/z1-v  
*/ qUo(hbp  
public class ShellSort implements SortUtil.Sort{ a-W&/  
;8A_- $  
/* (non-Javadoc) "[%NXan  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ua:EI!`  
*/ R 'F|z{8  
public void sort(int[] data) { w8E,zH  
for(int i=data.length/2;i>2;i/=2){ C$5v:Fk  
for(int j=0;j insertSort(data,j,i); ^'h~#7s  
} )KNFS,5  
} D H/1 :H  
insertSort(data,0,1); ^b%AwzHH}  
} ":Q70*xSm  
HCP Be2  
/** q\~7z1   
* @param data 4b#YpK$7U  
* @param j [AU1JO`\"  
* @param i K+7xjFoDIR  
*/ <ZocMv9gM  
private void insertSort(int[] data, int start, int inc) { *)w 8fq  
int temp; koUH>J:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mMMu'N  
} Kq1sGk  
} 4uv }6&R  
} !=-l760  
iZ58;`  
} w"D"9 G  
\!%3giD5!  
快速排序: d<whb2l  
cx$Oh`-Car  
package org.rut.util.algorithm.support; _x lgsa  
| zAey\  
import org.rut.util.algorithm.SortUtil; )TWf/L cp  
=?}'\ >G "  
/** WcdU fv(>  
* @author treeroot :S%|^Q AN  
* @since 2006-2-2 :9)>!+|'  
* @version 1.0 3B_S>0H"$  
*/ x&f?c=\F  
public class QuickSort implements SortUtil.Sort{ |.,y M|  
eBP N[V  
/* (non-Javadoc) {c$W-t):U|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AXJC&O}`  
*/ YRwS{ e*u  
public void sort(int[] data) { bi_R.sfK&  
quickSort(data,0,data.length-1); /r)d4=1E  
} gC'GZi^  
private void quickSort(int[] data,int i,int j){ `0so)2ty+  
int pivotIndex=(i+j)/2; ;zGGT^Dn  
file://swap ,7'l$-rl  
SortUtil.swap(data,pivotIndex,j); G1D(-X4ALZ  
F'"-4YV>&  
int k=partition(data,i-1,j,data[j]); R)H@'X  
SortUtil.swap(data,k,j); ^{bP#f   
if((k-i)>1) quickSort(data,i,k-1); <uAqb Wu  
if((j-k)>1) quickSort(data,k+1,j); #3qkG)  
2Gj&7A3b  
} lKm?Xu'yH  
/** aWit^dp  
* @param data ;eWVc;H  
* @param i 5$y<nMP  
* @param j $k!t&G  
* @return u!F3Rh8D  
*/ Obw uyhjQ  
private int partition(int[] data, int l, int r,int pivot) { DF-og*V  
do{ D6 M:pIN*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6I>W(_T  
SortUtil.swap(data,l,r); <=0_[M  
} \Q#F&q0  
while(l SortUtil.swap(data,l,r); 2Aff3]-:Gd  
return l; Z{e5 OJ  
} Y H?>2u  
d+/d)cu  
} }e82e  
QN0Ik 2L  
改进后的快速排序: 7%0PsF _  
=7$YBCuF  
package org.rut.util.algorithm.support; Hiq9Jn uv(  
[@/G?sAQm\  
import org.rut.util.algorithm.SortUtil; JiRW|+`pe  
(5atU |8r  
/** Yc9 M6=E^  
* @author treeroot Z'u`)jR  
* @since 2006-2-2 ArF+9upGY  
* @version 1.0 5:YtBdP  
*/ z`/v}'d[X  
public class ImprovedQuickSort implements SortUtil.Sort { Qz $1_vO  
DTJ~.  
private static int MAX_STACK_SIZE=4096; ny#7iz/  
private static int THRESHOLD=10; 7=JiL=  
/* (non-Javadoc) yvVs9"|0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ex~OT  
*/ M T{^=F ]  
public void sort(int[] data) { >SccoI  
int[] stack=new int[MAX_STACK_SIZE]; Qs~;?BH&  
thkL<  
int top=-1;  vH` u  
int pivot; \l#=p+x5  
int pivotIndex,l,r; m+1MoeR  
73P(oVj<  
stack[++top]=0; 398%16}  
stack[++top]=data.length-1; Iy"   
S c@g;+#QU  
while(top>0){ ==c\* o  
int j=stack[top--]; Mj[ v _&N  
int i=stack[top--]; h v9s  
1z*]MYU  
pivotIndex=(i+j)/2; FCOSgEU  
pivot=data[pivotIndex]; Tl9_Wi  
{X8F4  
SortUtil.swap(data,pivotIndex,j); >\MV/!W  
.O~)zM x  
file://partition ZJd1Lx   
l=i-1; _e/v w:  
r=j; 1!,lI?j,  
do{ _ 57m] ;&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <Y9ps`{}:  
SortUtil.swap(data,l,r); ]W]Vkkg]  
} \Q]2Zq  
while(l SortUtil.swap(data,l,r); VNaa(Q  
SortUtil.swap(data,l,j); UiW( /L  
M]eH JZ~v  
if((l-i)>THRESHOLD){ Rh,*tS  
stack[++top]=i; qksN {t  
stack[++top]=l-1; ,p0R 4gi  
} nz+DPk["  
if((j-l)>THRESHOLD){ }9{6{TD  
stack[++top]=l+1; ;clF\K>  
stack[++top]=j; k4s >sd3 5  
} [O9(sWL'  
1vi<@i,  
} lshO'I+)*  
file://new InsertSort().sort(data); ^- mz!{  
insertSort(data); ~E#>2Mh  
} R )ejIKtY  
/** ll73}v  
* @param data i3N _wv{  
*/ omY%sQ{)  
private void insertSort(int[] data) { #;>J<>  
int temp; iC$~v#2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HIeWgw^"  
} Spt[b.4mF  
} ~%(r47n  
} [sbC6(z  
A'p"FYlCW  
} Nmns3D  
1u 'x|Un  
归并排序: Pa%XLn'5  
lzw3 x  
package org.rut.util.algorithm.support; 'GS1"rkW<5  
,RDxu7iT  
import org.rut.util.algorithm.SortUtil; ,NPU0IDG>  
zZGPA j  
/** DSD#',  
* @author treeroot hPP+lqY[  
* @since 2006-2-2 >O|hN`  
* @version 1.0 {PWz:\oaD  
*/ pu,/GBG_  
public class MergeSort implements SortUtil.Sort{ (Sv7^}j  
p~$\@8@  
/* (non-Javadoc) XLI'f$w&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  \^w=T*  
*/ fw'$HV76  
public void sort(int[] data) { q$0^U{j/  
int[] temp=new int[data.length]; TdG[b1xN  
mergeSort(data,temp,0,data.length-1); ycIT=AFYqd  
} 9c46|  
&> p2N  
private void mergeSort(int[] data,int[] temp,int l,int r){ qXCl6Yo8  
int mid=(l+r)/2; /<Zy-+3  
if(l==r) return ; &X9#{:l=  
mergeSort(data,temp,l,mid); [A fV+$  
mergeSort(data,temp,mid+1,r); Vt*Duh+4  
for(int i=l;i<=r;i++){ Y:ZI9JK?  
temp=data; m%'9zL c  
} VEd\*  
int i1=l; GK2IY  
int i2=mid+1; G]=U=9ZI  
for(int cur=l;cur<=r;cur++){ !nU  
if(i1==mid+1) m{I_E G  
data[cur]=temp[i2++]; [}+0N GgR  
else if(i2>r) !f V.#9AB#  
data[cur]=temp[i1++]; =3}@\f#  
else if(temp[i1] data[cur]=temp[i1++]; Wi'BX#xCB  
else gjk=`lU  
data[cur]=temp[i2++]; > rB7ms/@E  
} WB"$NYB  
} K &Ht37T  
6oL-Atf  
} o>\jc  
1Hy  
改进后的归并排序: kS[k*bN0  
{uDL"~^\  
package org.rut.util.algorithm.support; [yf2_{*0T  
WIQt5=-  
import org.rut.util.algorithm.SortUtil; nZ$,Bjb  
tQF7{F-}  
/** EX='\~Dw  
* @author treeroot _+T;4U' p  
* @since 2006-2-2  7=6p  
* @version 1.0 hUxpz:U*  
*/ D-8%lGS  
public class ImprovedMergeSort implements SortUtil.Sort { e*jn7aya  
>Czcs=(L.k  
private static final int THRESHOLD = 10; d&n0:xOc  
F C2oP,  
/* BB1'B-O  
* (non-Javadoc) v'Tk Kwl  
* P zzX Ds6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EN+WEMro  
*/ t'Nu^_#  
public void sort(int[] data) { v}M, M&?  
int[] temp=new int[data.length]; $xvEYK  
mergeSort(data,temp,0,data.length-1);  d9R0P2  
} T=ox;r  
|U8;25Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { >hRYsWbmg  
int i, j, k; *$1*\oCtz  
int mid = (l + r) / 2; 3Nsb@0  
if (l == r) SrN0f0  
return; 13}=;4O  
if ((mid - l) >= THRESHOLD) 6aX m9 J  
mergeSort(data, temp, l, mid); svU107?  
else @:oMlIw;  
insertSort(data, l, mid - l + 1); ]zhFFq`  
if ((r - mid) > THRESHOLD) VCX})sp  
mergeSort(data, temp, mid + 1, r);  UY+~,a  
else R0gjx"U  
insertSort(data, mid + 1, r - mid); aCMF[ 3j  
$ *MjNj2  
for (i = l; i <= mid; i++) { |2 g }i\  
temp = data; kVe^g]F  
} 2j=3i@  
for (j = 1; j <= r - mid; j++) {  h%E25in  
temp[r - j + 1] = data[j + mid]; j0kEi+!TVq  
} %[B &JhT  
int a = temp[l]; _0oZgt)  
int b = temp[r]; dG Qy=T:  
for (i = l, j = r, k = l; k <= r; k++) { 4TG g`$e;  
if (a < b) { *[.+|v;A  
data[k] = temp[i++]; [ j1SX-NX  
a = temp; kD >|e<}\  
} else { s%H5Qa+Uh  
data[k] = temp[j--]; deda=%w0  
b = temp[j]; :>Z0Kb}7  
} #Ru+|KL  
} oQjh?vm  
} ~.VWrHC  
6:330"9  
/** f|m.v +7k  
* @param data rQ30)5^V|  
* @param l zblh_6  
* @param i $O%lYQY]  
*/ FOquQr1cF  
private void insertSort(int[] data, int start, int len) { nO\|43W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q.K >v'  
} `5O<U~'d  
} WxWgY}`  
} E4T?8TO$o%  
} pZlBpGQf  
f$*M;|c1c/  
堆排序: f*NtnD=rJ  
FGy7KVR  
package org.rut.util.algorithm.support; K)_0ej~C  
O<L /m[]  
import org.rut.util.algorithm.SortUtil; TG{=~2  
6Ck?O/^  
/** t=xO12Z  
* @author treeroot No =f&GVg  
* @since 2006-2-2 c ?V,a`6  
* @version 1.0 ^ }U{O A  
*/ ;yBq'_e3  
public class HeapSort implements SortUtil.Sort{ !yoj ZG MB  
8ENAif   
/* (non-Javadoc) TcauCL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"Ju3o?u  
*/ $daI++v`  
public void sort(int[] data) { !xj>~7  
MaxHeap h=new MaxHeap(); q/m}+v]  
h.init(data); ,y:q]PR  
for(int i=0;i h.remove(); e7]IEBbX2O  
System.arraycopy(h.queue,1,data,0,data.length); 5\:#-IYJ  
} kYPowM  
M}(4>W  
private static class MaxHeap{ h*_r=' E  
Y49kq}  
void init(int[] data){ ""d3ownKhw  
this.queue=new int[data.length+1]; 4y>G6TD^  
for(int i=0;i queue[++size]=data; djZOx;/  
fixUp(size); >Q[]i4*A  
} hL67g  
} 7:jSP$  
T/-PSfbkj  
private int size=0; .zBSjh_=H  
1?E\2t&K  
private int[] queue; 7QQ3IepP  
Nf<([8v;t  
public int get() { @B7 ;  
return queue[1]; I/XVo2Ee  
} gAv?\9=a)W  
~uzu*7U  
public void remove() { @^k$`W;  
SortUtil.swap(queue,1,size--); w2/%e$D!9  
fixDown(1); dkG-Yz~  
} dH#o11[  
file://fixdown _ F@>?\B  
private void fixDown(int k) { YHvmo@  
int j; ^~=o?VtBg  
while ((j = k << 1) <= size) { \DeZY97p%  
if (j < size %26amp;%26amp; queue[j] j++; &NHIX(b6  
if (queue[k]>queue[j]) file://不用交换 P/M*XUG.  
break; B<8Z?:3YS  
SortUtil.swap(queue,j,k); 90K&s#+13  
k = j; Vi5RkUY]  
} wz073-v>ZV  
} WdunI~&.  
private void fixUp(int k) { Zt[ P kBi  
while (k > 1) { }I05&/o.3p  
int j = k >> 1; NFmB ^@k  
if (queue[j]>queue[k]) ZLE4 XB]  
break; Xa9G;J$  
SortUtil.swap(queue,j,k); .!nFy`  
k = j; qI8{JcFx:  
} ,h8)5Mj/J  
} 0BxO75m}o  
.$99/2[90  
} A4%0  
ZuBVq  
} -PEpy3dMY  
<Ni]\-*  
SortUtil: cN&b$ 8O=%  
Rqvm%sAi  
package org.rut.util.algorithm; xU67ztS'E'  
ec"L*l"  
import org.rut.util.algorithm.support.BubbleSort; ``>WFLWTn  
import org.rut.util.algorithm.support.HeapSort; z'fGHiX7.0  
import org.rut.util.algorithm.support.ImprovedMergeSort; W9a H]9b  
import org.rut.util.algorithm.support.ImprovedQuickSort; }1X,~y]  
import org.rut.util.algorithm.support.InsertSort; 9FJU'$FN  
import org.rut.util.algorithm.support.MergeSort; $Iqt c)DA  
import org.rut.util.algorithm.support.QuickSort; 'T+3tGCy+  
import org.rut.util.algorithm.support.SelectionSort; hj0uv6t.c  
import org.rut.util.algorithm.support.ShellSort; qI5/ME(}  
z@T;N'EM  
/** ?\ho9nyK  
* @author treeroot sx*(JM}Be  
* @since 2006-2-2 LB2 2doW  
* @version 1.0 !C#q  
*/ d:<{!}BR3  
public class SortUtil { h'IBVI!P  
public final static int INSERT = 1; (_U&EX%  
public final static int BUBBLE = 2; *K-,<hJ#L  
public final static int SELECTION = 3; qC`"<R=GX  
public final static int SHELL = 4; mP3:Fc _G  
public final static int QUICK = 5; )M'#l<9B  
public final static int IMPROVED_QUICK = 6; Z#"6&kv  
public final static int MERGE = 7; {[)J~kC+  
public final static int IMPROVED_MERGE = 8; 64b9.5Bn  
public final static int HEAP = 9; .\*\bvyCw  
<<4G GO  
public static void sort(int[] data) { o?/N4$&5l  
sort(data, IMPROVED_QUICK); N \A)P  
} b>I -4  
private static String[] name={ i"sVk8+o!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n# Z6d`  
}; Gh42qar`  
O{SU,"!y  
private static Sort[] impl=new Sort[]{ BD,~M*%z  
new InsertSort(), a/`fJY6rR  
new BubbleSort(), ]!h%Jlu  
new SelectionSort(), _3hCu/BV  
new ShellSort(), {*>$LlL  
new QuickSort(), kpK: @  
new ImprovedQuickSort(), 3vVhE,1N  
new MergeSort(), |wVoJO!O}  
new ImprovedMergeSort(), -D{~7&  
new HeapSort() y(6&90cr  
}; *A c~   
v|QFUa`  
public static String toString(int algorithm){ .^P^lQT]>  
return name[algorithm-1]; fs~n{z,ja%  
} Njz,y}\  
a,lH6lDk  
public static void sort(int[] data, int algorithm) { t(Iy[-  
impl[algorithm-1].sort(data);  X-~Q  
} oBKZ$&_h  
EUUj-.dEN  
public static interface Sort { q0DoR@  
public void sort(int[] data); "wexG]R=5  
} <(#cPV@j  
o.}^6.h"  
public static void swap(int[] data, int i, int j) { 5\EHu8  
int temp = data; bKG:_mWe w  
data = data[j]; D.R5-  
data[j] = temp; -v>BeVF  
} fIWQ+E  
} YN"102CK  
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