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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。 ~#doJ:^H3  
插入排序: 6{XdLI  
c]pO'6]  
package org.rut.util.algorithm.support; AADvk_R  
L$ nFRl&  
import org.rut.util.algorithm.SortUtil; SO}$96  
/** Bn[5M [  
* @author treeroot # j=r  
* @since 2006-2-2 L5"|RI}  
* @version 1.0 Fu K(SP3  
*/ \~1>%F'op  
public class InsertSort implements SortUtil.Sort{ l c<&f  
A[,[j?wC  
/* (non-Javadoc) m&'z|eN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x J;DkPh  
*/ o9tvf|+z  
public void sort(int[] data) { 3$R^tY2UU  
int temp; <lx~/3<m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0@ -3U{Q  
} a]-.@^:_i  
} '' @upZBJ  
} _ ]W }6?i  
nUAs:Q  
} *mqoyOa  
s}~'o!}W  
冒泡排序: Jy,Dcl  
7VP[U,  
package org.rut.util.algorithm.support; QE:%uT  
"TWNit  
import org.rut.util.algorithm.SortUtil; nDR)UR  
94=aVM\>>  
/** ;2m<#~@0  
* @author treeroot ,{@,dw`lUz  
* @since 2006-2-2 a\wpJ|3{=T  
* @version 1.0 39W"G7n?v  
*/ HiBw==vlV  
public class BubbleSort implements SortUtil.Sort{ 9s5PJj"u  
UTatcn  
/* (non-Javadoc) :v_H;UU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =h~\nTN  
*/ P=)&]Pz  
public void sort(int[] data) { xDf<@  
int temp; IC-k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [:HT=LX3  
if(data[j] SortUtil.swap(data,j,j-1); [Z3B~c  
} >L#HE  
} T)IH4UO  
} QyJ2P{z  
} y;N[#hY#CD  
C+ B`A9  
} t83n`LC  
G22= 8V  
选择排序: /f!CX|U  
*mQOW]x%  
package org.rut.util.algorithm.support; R@=Bk(h  
c}nXMA^^  
import org.rut.util.algorithm.SortUtil; Ns6Vf5T.  
Ea%} VZ&[  
/** #ii,GN~N  
* @author treeroot 6Xjr0 C+  
* @since 2006-2-2 P^-tGo!  
* @version 1.0 -[kbHrl&  
*/ ,UFr??ZKm  
public class SelectionSort implements SortUtil.Sort { _rQM[{Bkg  
90%alG 1>y  
/* c&Pgz~iP  
* (non-Javadoc) QI@!QU$K&  
* UR~9*`Z ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;c5Q"  
*/ ^(p}hSLAfQ  
public void sort(int[] data) { ~]71(u2  
int temp; \JBJ$lBL  
for (int i = 0; i < data.length; i++) { 1mw<$'pm0  
int lowIndex = i; ~eH+*U|\|M  
for (int j = data.length - 1; j > i; j--) { rC>')`uk  
if (data[j] < data[lowIndex]) {  *$nz<?  
lowIndex = j; utq*<,^  
} pq`Bg`c  
} q9j9"M'  
SortUtil.swap(data,i,lowIndex); g->cgExj  
} (ilU<Ht  
} v*Qr(4  
fu/v1Nhm  
} j|f$:j  
s9 '*Vm  
Shell排序: gIR{!'  
N 3)OH6w"  
package org.rut.util.algorithm.support; :F:<{]oG_  
h<oQ9zW)  
import org.rut.util.algorithm.SortUtil; U!sv6=(y@  
".z~c%'  
/** DiF=<} >x  
* @author treeroot ,4 ftQJ  
* @since 2006-2-2 /#?lG`'1  
* @version 1.0 Z7&Bn  
*/ /IM5#M5~  
public class ShellSort implements SortUtil.Sort{ P%5h!Z2m  
b'Gn)1NE  
/* (non-Javadoc) [o)P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c?L_n=B  
*/ 5B{O!SNd  
public void sort(int[] data) { =4 &/Pr  
for(int i=data.length/2;i>2;i/=2){ x\j6=|  
for(int j=0;j insertSort(data,j,i); &$fe%1#  
} 94L P )n  
} )2mi6[qs0l  
insertSort(data,0,1); =:(8F*Q  
} DoA4#+RU  
kStWsc$;+T  
/** IMzhEm  
* @param data 5Bw  
* @param j W`] ,  
* @param i j'i-XIs  
*/ DJlY~}v#_  
private void insertSort(int[] data, int start, int inc) { :0pxacD"!  
int temp; @Nb&f<+gi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :Vq gmn  
} ): C4"2l3  
} KLlo^1.<  
} eHG**@"X  
0Ha1pqR  
} zw^jIg$  
<#ujm fD  
快速排序: >4=sEj  
Dm6WSp1|b  
package org.rut.util.algorithm.support; ( 3IM7  
,WbO8#z+  
import org.rut.util.algorithm.SortUtil; 2a2C z'G  
PL<q|y  
/** \}t(g}7T  
* @author treeroot X""<5s'0  
* @since 2006-2-2 XXacWdh \  
* @version 1.0 S|Wv1H>  
*/ rixNz@p'%  
public class QuickSort implements SortUtil.Sort{ [|V<e+>T/  
)DuOo83n["  
/* (non-Javadoc) y1^<!I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j&) +qTV  
*/ H-?SlVsf  
public void sort(int[] data) { ,6,#Lc  
quickSort(data,0,data.length-1); Z2`(UbG}  
} cEO g  
private void quickSort(int[] data,int i,int j){  {[o=df/  
int pivotIndex=(i+j)/2; 31k.{dnm  
file://swap LJYFz=p "  
SortUtil.swap(data,pivotIndex,j); f&B&!&gZ  
QNzI  
int k=partition(data,i-1,j,data[j]); draY /  
SortUtil.swap(data,k,j); ^,'!j/w5  
if((k-i)>1) quickSort(data,i,k-1); $Ne$s  
if((j-k)>1) quickSort(data,k+1,j); Q&^ti)vB  
(F~i  
} pUZe.S>G  
/** Dms 6"x2  
* @param data YY{S0jnhF  
* @param i 8a|p`)lT  
* @param j 3,e^; {w  
* @return JadXdK=gE  
*/ z '3  
private int partition(int[] data, int l, int r,int pivot) { bNp RGhlV  
do{ "zL<:TQ"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0Jz'9  
SortUtil.swap(data,l,r); :CNWHF4$  
} 3D[IZ^%VtM  
while(l SortUtil.swap(data,l,r); O8TAc]B  
return l; ,ClGa2O  
} PYPs64kNC]  
w0x, ~  
} ?@6N EfQf  
}Zc.rk  
改进后的快速排序: 6pM[.:TM   
a,x-akZWf  
package org.rut.util.algorithm.support; E$=!l{Ms  
)8p FPr  
import org.rut.util.algorithm.SortUtil; *KN'0Z@W  
yNi/JM  
/** ^C^FxIA&  
* @author treeroot ,1EyT>  
* @since 2006-2-2 ,IF3VE&r  
* @version 1.0 :^j`wd1 h  
*/ iyAeR!`  
public class ImprovedQuickSort implements SortUtil.Sort { n.n;'p9t@  
R$k4}p  
private static int MAX_STACK_SIZE=4096; pca `nN!  
private static int THRESHOLD=10; wO/}4>\  
/* (non-Javadoc) v\PqhIy"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S*VG;m #  
*/ *,q ?mO  
public void sort(int[] data) { <0g.<n,  
int[] stack=new int[MAX_STACK_SIZE]; _TY9!:&}q  
!f[LFQD  
int top=-1; G?)NDRM  
int pivot; $!%/Kk4M  
int pivotIndex,l,r; q@8Jc[\d  
q">lP (t  
stack[++top]=0; dc.9:u*w  
stack[++top]=data.length-1; W5PNp%+KE  
Vw :.'-Oi  
while(top>0){ I},.U&r  
int j=stack[top--]; 8Q ba4kgL  
int i=stack[top--]; EKo!vie G  
L"{qF<@V7&  
pivotIndex=(i+j)/2; q{~59{Fha  
pivot=data[pivotIndex]; &u&+:m  
 BC*62m  
SortUtil.swap(data,pivotIndex,j); KtTv0[66  
15dhr]8E  
file://partition ?!TFoD2'  
l=i-1; /}A"F[5  
r=j; dZ}gf}.v  
do{ '0q.zzv|_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3}R}|Ha J#  
SortUtil.swap(data,l,r); Wd "<u2  
} ehCGu( =  
while(l SortUtil.swap(data,l,r); 8*o*?1.  
SortUtil.swap(data,l,j); /2 z, ?,jL  
~ +DPq|-O  
if((l-i)>THRESHOLD){ Z 0&=Lw  
stack[++top]=i; N~NUBEKcp  
stack[++top]=l-1; @A32|p}  
} 3{c6)vR2  
if((j-l)>THRESHOLD){ )1?#q[x  
stack[++top]=l+1; "y~tAg  
stack[++top]=j; ;IyA"C(i  
} rSu+zS7`X  
(~S=DFsP  
} eka<mq|W  
file://new InsertSort().sort(data); {BV0Y.O  
insertSort(data); (4]M7b[S$  
} |ppG*ee  
/** yuP1*QJ%  
* @param data H!SFSgAu  
*/ Yzr)UJl*I  
private void insertSort(int[] data) { $?P5A E  
int temp; d{/#A%.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T)c<tIr6  
} (8"advc6  
} oRkh>yj'  
} L5[{taZ,  
L(RI4d  
} I9  (6  
_v6x3 Z  
归并排序: z] +&kNm  
HQkK8'\LP  
package org.rut.util.algorithm.support; XoNBq9Iu  
0RZ[]:(  
import org.rut.util.algorithm.SortUtil; i(qZ#oN  
C))x#P36  
/** 6 2:FlW>  
* @author treeroot =\`iC6xP}  
* @since 2006-2-2 }3O 0nab  
* @version 1.0 AZ.$g?3w  
*/ n58yR -"  
public class MergeSort implements SortUtil.Sort{ xmNs%  
q0C%">>1 #  
/* (non-Javadoc) zq(4@S-TU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FUVp}>#U  
*/ |:w)$i& *  
public void sort(int[] data) { -e4TqzRr  
int[] temp=new int[data.length]; s_;o1 K0  
mergeSort(data,temp,0,data.length-1); 9?iA~r|+  
} [XE\2Qa8e  
Xp+lpVcJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ ri Z :#I  
int mid=(l+r)/2; 5OCt Q4u  
if(l==r) return ; A?bqDy  
mergeSort(data,temp,l,mid); h! Bg} B~  
mergeSort(data,temp,mid+1,r); OO2uE ;( 3  
for(int i=l;i<=r;i++){ VqUCcT  
temp=data; }K^v Ujl  
} jM}(?^@  
int i1=l; yJ/YK  
int i2=mid+1; h/Yxm2  
for(int cur=l;cur<=r;cur++){ O DEFs?%'  
if(i1==mid+1) zpD?5  
data[cur]=temp[i2++]; %:s+5*SKe  
else if(i2>r) Xs{PAS0  
data[cur]=temp[i1++]; IH&0>a  
else if(temp[i1] data[cur]=temp[i1++]; eEBo:Rc9  
else 78\j  
data[cur]=temp[i2++]; *c\XQy  
} dF[|9%)  
} &:&~[4>%a  
3G[|4v?[<_  
} OwT_W)$  
,k_"T.w  
改进后的归并排序: #mU<]O  
=w* 8   
package org.rut.util.algorithm.support; X}xf_3N "  
Wco2i m  
import org.rut.util.algorithm.SortUtil; @t a:9wZ  
qyxd9Lk1  
/** dk^jv +  
* @author treeroot P-a8S*RRa  
* @since 2006-2-2 Xt:$H6 y  
* @version 1.0 kia[d984w  
*/ z#Fel/L`O  
public class ImprovedMergeSort implements SortUtil.Sort { #IZ.px  
s1E 0atT  
private static final int THRESHOLD = 10; I(Qz%/Ox  
(5@H<c^6  
/* G pI4QzR  
* (non-Javadoc) /@|iI<|  
* >|c?ZqW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E}KGZSj  
*/ 8{=|<  
public void sort(int[] data) { hsQDRx%H}  
int[] temp=new int[data.length]; *RxJ8.G  
mergeSort(data,temp,0,data.length-1); 4BUG\~eI3  
} "AZ|u#0P  
%L^(eTi[  
private void mergeSort(int[] data, int[] temp, int l, int r) { <$yA*  
int i, j, k; aoZ| @x  
int mid = (l + r) / 2; @!=Ds'MJC  
if (l == r) #Lpw8b6  
return; "T_9_6tH  
if ((mid - l) >= THRESHOLD) }ymW};W  
mergeSort(data, temp, l, mid); $K!Jm7O\  
else ~Ni  
insertSort(data, l, mid - l + 1); nhdZC@~E0  
if ((r - mid) > THRESHOLD) F{;#\Ob  
mergeSort(data, temp, mid + 1, r); \wD/TLS}  
else +Eh.PWEe  
insertSort(data, mid + 1, r - mid); L'r&'y[  
r&m49N,d  
for (i = l; i <= mid; i++) { J{^md0l  
temp = data; ;YR /7  
} j &,Gv@  
for (j = 1; j <= r - mid; j++) { WM`3QJb  
temp[r - j + 1] = data[j + mid]; {daX?N|V  
}  u&#>)h  
int a = temp[l]; jQ;/=9  
int b = temp[r]; EP#2it]0]  
for (i = l, j = r, k = l; k <= r; k++) { uUg;v/:  
if (a < b) { IK\~0L;ozE  
data[k] = temp[i++]; h\UKm|BZ  
a = temp; F$)l8}  
} else { ,eBC]4)B6  
data[k] = temp[j--]; CdF;0A9.3  
b = temp[j]; O\.^H/  
} I4G0 !"T+  
} udqrHR5  
} 9tJ0O5  
f~T7?D0u}N  
/** w[ v {)  
* @param data ]B,tCBt  
* @param l ,_u7@Ix  
* @param i salC4z3  
*/ F*[E28ia&  
private void insertSort(int[] data, int start, int len) { EjLq&QR.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H P.=6bJWi  
} t`z"=S  
} D{N8q^Cs9  
} !^% 3  
} aDdGhB  
P:'wSE91  
堆排序: :')[pO_FW*  
'IX1WS&\"  
package org.rut.util.algorithm.support; )$:1e)d  
X%'z  
import org.rut.util.algorithm.SortUtil; `[sFh%:  
3:x(2 A  
/** Vx$;wU Y  
* @author treeroot XLn9NBT4K  
* @since 2006-2-2 @q'kKVJs  
* @version 1.0 0#8   
*/ l1 Kv`v\  
public class HeapSort implements SortUtil.Sort{ {nV/_o$$  
`3F#k[IR  
/* (non-Javadoc) .nD#:86M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T'5{p  
*/ (  zo7h  
public void sort(int[] data) { '0D$C},^|8  
MaxHeap h=new MaxHeap(); I_<VGU k  
h.init(data); Q~(Gll;  
for(int i=0;i h.remove(); m8fj\,X  
System.arraycopy(h.queue,1,data,0,data.length); _= v4Iz0  
} {]Zan'{PCO  
`NW/Z/_  
private static class MaxHeap{ ~*Y#Y{  
f)*"X[)o  
void init(int[] data){ \1<'XVS  
this.queue=new int[data.length+1]; i5}Zk r  
for(int i=0;i queue[++size]=data; Rml'{S  
fixUp(size); ~*iF`T6  
} n-ffX*zA(  
} @N Yl4N  
h0PDFMM<  
private int size=0; AY/.vyS  
XZ%,h  
private int[] queue; { ptd OrN  
EsGu#lD2  
public int get() { E'LI0fr  
return queue[1]; /L^g. ~  
} .t@|2  
*cb|9elF^  
public void remove() { ; JkSZs3  
SortUtil.swap(queue,1,size--); @Go_5X(  
fixDown(1); N!K%aH~O  
} '8q3ub<\  
file://fixdown sq'm)g  
private void fixDown(int k) { H~j@n!)  
int j; Uc tlE>X`  
while ((j = k << 1) <= size) { *$eH3nn6g  
if (j < size %26amp;%26amp; queue[j] j++; %OBW/Ti  
if (queue[k]>queue[j]) file://不用交换 j[r}!;O  
break; W[&nQW$E  
SortUtil.swap(queue,j,k); s>>&3jfM  
k = j; !eyLh&]5  
} O=o}uB-*6  
} *wTX  
private void fixUp(int k) { &nmBsl3Q.  
while (k > 1) { geG0F}oC!  
int j = k >> 1; OR@ 67Y  
if (queue[j]>queue[k]) #`SAc`:n  
break; [\ao#f0WR  
SortUtil.swap(queue,j,k); doanTF4Da  
k = j; B[uyr)$  
} | 1B0  
} ^?lpY{aa  
~}_^$l8#-Q  
} (ks>F=vk*  
E'WXi!>7p  
} rp@:i _]  
wC{sP"D  
SortUtil: iV{_?f1jo  
5=TgOS]R  
package org.rut.util.algorithm; e4YfJd  
JT 7WZc)  
import org.rut.util.algorithm.support.BubbleSort; o26Y }W  
import org.rut.util.algorithm.support.HeapSort; L~ &S<5?  
import org.rut.util.algorithm.support.ImprovedMergeSort; v^&HZk=(  
import org.rut.util.algorithm.support.ImprovedQuickSort; q'jOI_b  
import org.rut.util.algorithm.support.InsertSort; n5QO'Jr%[  
import org.rut.util.algorithm.support.MergeSort; &y_t,8>5  
import org.rut.util.algorithm.support.QuickSort; IUOf/mM5  
import org.rut.util.algorithm.support.SelectionSort; =zn'0g, J4  
import org.rut.util.algorithm.support.ShellSort; 2O kID WcM  
I=L[ "]  
/** 08ZvRy(Je<  
* @author treeroot .F ?ww}2p]  
* @since 2006-2-2 :%gc Sm  
* @version 1.0 .<t{saToU  
*/ (XOz_K6c%K  
public class SortUtil { oRbWqN`F.  
public final static int INSERT = 1; ,3?=W/Um4  
public final static int BUBBLE = 2;  hlVC+%8  
public final static int SELECTION = 3; "==c  
public final static int SHELL = 4; *9n[ #2sM<  
public final static int QUICK = 5; xC< )]  
public final static int IMPROVED_QUICK = 6; G!FdTvx$  
public final static int MERGE = 7; dg|+?M^9`  
public final static int IMPROVED_MERGE = 8; 'pA%lc)  
public final static int HEAP = 9; /o4_rzR?  
s~,!E  
public static void sort(int[] data) { k)knyEUi  
sort(data, IMPROVED_QUICK); 1XN%&VR>^D  
} \gP?uJ  
private static String[] name={ Uv59 XF$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #s~ITG #H  
}; Cx;it/8+  
E zcch1  
private static Sort[] impl=new Sort[]{ \B')2phE  
new InsertSort(), @C-dCC?  
new BubbleSort(), u4lM>(3Y}  
new SelectionSort(), ,q*|R O  
new ShellSort(), O[Z$~  
new QuickSort(), ywm"{ U? 8  
new ImprovedQuickSort(), I 6WHC*  
new MergeSort(), ,U9j7E<4  
new ImprovedMergeSort(), ,GWa3.&.d  
new HeapSort() 0^{Tq0Ri[  
}; Rs<S}oeLn  
@%g:'^/  
public static String toString(int algorithm){ T \34<+n1N  
return name[algorithm-1]; ]>)}xfL &,  
} p YCMJK-H  
~H''RzN  
public static void sort(int[] data, int algorithm) { 8k{XUn  
impl[algorithm-1].sort(data); L e~D"d8  
} a\-5tYo`u  
Wr Wz+5M8  
public static interface Sort { g?1bEOA!  
public void sort(int[] data); (6[<+j&.  
} LZ#A`&qUd  
S%p,.0_  
public static void swap(int[] data, int i, int j) { G]l/L\{  
int temp = data; je\]j-0$u  
data = data[j]; Q]/g=Nn ^~  
data[j] = temp; W*H%\Y:N  
} (Vey]J  
} / pe.?Zd  
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