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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。 M7>(hVEAW'  
插入排序: @\w,otT  
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package org.rut.util.algorithm.support; /%A;mlf{  
M(d6Z2ibh  
import org.rut.util.algorithm.SortUtil; (~)%Fo9X"  
/** YUQtMf9  
* @author treeroot mR8W]'gl.L  
* @since 2006-2-2 N$TL;T>  
* @version 1.0 ;pD)m/$h`  
*/ htm{!Z]s0  
public class InsertSort implements SortUtil.Sort{ q> s-Y|  
4wi(?  
/* (non-Javadoc) w[_x(Ojq;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =SD\Q!fA  
*/ \<vNVz7.D  
public void sort(int[] data) { WZ!WxX>zO  
int temp; - O"i3>C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yAL1O94  
} "+?Cz !i   
} fWF |,A>>b  
} \V2,pi8'v  
g\GdkiIj  
} H0a/(4/xg  
M HL("v(@B  
冒泡排序: pPVRsXy  
s cdtWA  
package org.rut.util.algorithm.support; 1Uf*^WW4  
IMnP[WA!  
import org.rut.util.algorithm.SortUtil; M[~{Vd  
d7cg&9+  
/** !3oKmL5  
* @author treeroot Wk^RA_  
* @since 2006-2-2 mL~z~w*s  
* @version 1.0 m-T~fJ  
*/ M,3wmW&d6  
public class BubbleSort implements SortUtil.Sort{ FFEfp.T1M  
p.fF}B  
/* (non-Javadoc) ED$DSz)x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Qi }{;+  
*/ ~#}Dx :HH  
public void sort(int[] data) { 9kKnAf4Z  
int temp; D\^WXY5e%y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5FC4@Ms`  
if(data[j] SortUtil.swap(data,j,j-1); 2JmZ{  
} 1\dn 1Hh  
} 4gdY`}8b^}  
} iRG?# "  
} bg?"ILpk  
^*R(!P^  
} 9umGIQHnil  
rOD1_X-  
选择排序: _SZ5P>GIU  
oK+ WF  
package org.rut.util.algorithm.support; oUx[+Gnv  
+VEU:1Gt  
import org.rut.util.algorithm.SortUtil; )[&_scSa  
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/** +TeFt5[)h  
* @author treeroot #$\fh;!W  
* @since 2006-2-2 Y{f7 f'_  
* @version 1.0 92dF`sv  
*/ kE;O7sN   
public class SelectionSort implements SortUtil.Sort { ID1?PM  
!c<wS Q,  
/* =He. fEy  
* (non-Javadoc) pz_e=xr  
* 0;~yZ?6_F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dMl+ko  
*/ :^C'<SY2Gs  
public void sort(int[] data) { SC#sax4N!=  
int temp; oJ*1>7[J  
for (int i = 0; i < data.length; i++) { *!:QdWLq  
int lowIndex = i; -%IcYzyA  
for (int j = data.length - 1; j > i; j--) { OySy6IN]q  
if (data[j] < data[lowIndex]) { _-cK{  
lowIndex = j; >s*DrfX6  
} < /p 8r  
} ++[5q+b  
SortUtil.swap(data,i,lowIndex); d]0a%Xh[  
} y[0`hSQ)~  
} j<tq1?? [b  
qH%")7>  
} !- ~ X?s~L  
\tJFAc  
Shell排序: 7z~Ghz  
9x~-*8aw  
package org.rut.util.algorithm.support; S+x_c4 T  
<o:@dS  
import org.rut.util.algorithm.SortUtil; [JTto!Ih$  
N4^5rrkL  
/** m8R=?U~!S  
* @author treeroot 4cCF \&yU  
* @since 2006-2-2 ,*,sw:=2  
* @version 1.0 $*~Iu%Az  
*/ }GHxG9!z  
public class ShellSort implements SortUtil.Sort{ US?Rr  
~el-*=<m  
/* (non-Javadoc) #j@OLvXh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yq'4e[i  
*/ _; ]e@  
public void sort(int[] data) { ,ul5,ygA  
for(int i=data.length/2;i>2;i/=2){  5K56!*Y  
for(int j=0;j insertSort(data,j,i); p{;i& HNdp  
}   &LQ%  
} t Y1Et0  
insertSort(data,0,1); &m{'nRU}c  
} 0.(<'!"y  
Z/ bB h  
/** utO.WfWP  
* @param data V+B71\x<  
* @param j KI&:9j+M)  
* @param i )c tr"&-  
*/ >w'$1tc?+F  
private void insertSort(int[] data, int start, int inc) { Wr|G:(kw\!  
int temp; HD# r0)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y62%26 [  
} KS>$`ax,  
} 2z2`  
} |w)5;uQ&\  
J=WB6zi  
} setL dEi  
4L:>4X[T  
快速排序: gT1P*N;v  
|'hLa  
package org.rut.util.algorithm.support; "G?9b  
oh}^?p  
import org.rut.util.algorithm.SortUtil; - @bp4Z=  
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/** i+(GNcg2  
* @author treeroot Dm{Ok#@r2  
* @since 2006-2-2 T |"`8mG  
* @version 1.0 r?p{L F  
*/ juno.$ 6  
public class QuickSort implements SortUtil.Sort{ 3o8\/-*<  
CvTwBJy1  
/* (non-Javadoc) `^8*<+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |XcH]7Ai"  
*/ l)@:T|)c  
public void sort(int[] data) { lmFA&s"m  
quickSort(data,0,data.length-1); F1u)i  
} $p6N|p  
private void quickSort(int[] data,int i,int j){ Gt^d;7x]  
int pivotIndex=(i+j)/2; pt!'v$G/*  
file://swap 3IyZunFT  
SortUtil.swap(data,pivotIndex,j); ;L6Xs_L~  
E <@\>y.[  
int k=partition(data,i-1,j,data[j]); .hz2&9Ow  
SortUtil.swap(data,k,j); ! Cb=B  
if((k-i)>1) quickSort(data,i,k-1); O-GxUHwW r  
if((j-k)>1) quickSort(data,k+1,j); %Y',|+Arx  
nm):SEkC  
} ! zfFt;  
/** :EB,{|m  
* @param data dB)9K)  
* @param i %,?vyY  
* @param j `jW 4H$D  
* @return do' ORcZ  
*/ !C`20,U  
private int partition(int[] data, int l, int r,int pivot) { +i)AS0?d  
do{ nPf'ee  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,f<B}O  
SortUtil.swap(data,l,r); euZ(}+N&  
} ?`. XK}  
while(l SortUtil.swap(data,l,r); M_&4]\PkCy  
return l; =~,l4g\  
} n6cq\@~A  
5faj;I{%JY  
} ZLJNw0!=|t  
pG28M]\  
改进后的快速排序: JK^[{1 JI  
iwo$\  
package org.rut.util.algorithm.support; <IH*\q:7  
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import org.rut.util.algorithm.SortUtil; pTET%)3  
j`9Nwa  
/** 3H'*?|Y(#  
* @author treeroot >EBC 2WJ  
* @since 2006-2-2 Xiju"Cup"  
* @version 1.0 okDJ(AIV+  
*/ wP`sXPSmIu  
public class ImprovedQuickSort implements SortUtil.Sort { !aeNq82  
FNJ!IkuR  
private static int MAX_STACK_SIZE=4096; !3x *k;0  
private static int THRESHOLD=10; ewQe/Fq  
/* (non-Javadoc) ,>w}xWSYpG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6+ANAk  
*/ {Q<0\`A  
public void sort(int[] data) { ?#ihJt,  
int[] stack=new int[MAX_STACK_SIZE]; Z:^3Fm->+  
^srs$ w]  
int top=-1; Oxj(g;}  
int pivot; {rfte'4;=  
int pivotIndex,l,r; ,RN|d0dE  
^H'kHl'F  
stack[++top]=0; Mi D  
stack[++top]=data.length-1; u\w2S4c  
J!<#Nc  
while(top>0){ "OJr*B  
int j=stack[top--]; [a+4gy  
int i=stack[top--]; j@SYXKL~  
T^NJ4L4#  
pivotIndex=(i+j)/2; @#CF".fuN>  
pivot=data[pivotIndex]; Z"N(=B  
kxy]vH6m  
SortUtil.swap(data,pivotIndex,j); qOgtGN}k  
bQV("~#  
file://partition oVEAlBm^v  
l=i-1; < 4$YO-:E  
r=j; "cQvd(kug  
do{ v,*Q]r0m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D+hB[*7Fs  
SortUtil.swap(data,l,r); #{~7G%GPY5  
} |Cq8%  
while(l SortUtil.swap(data,l,r); DUo0w f#D^  
SortUtil.swap(data,l,j); N*':U^/t4J  
j88=f#<  
if((l-i)>THRESHOLD){ 3B -NY Ja  
stack[++top]=i; 8E 9{ Gf  
stack[++top]=l-1; a+'}XEhSC:  
} R( GmU4  
if((j-l)>THRESHOLD){ O&=KlnI:  
stack[++top]=l+1; }bCK  
stack[++top]=j; uDI}R]8~  
} ex=)H%_|  
QA!#s\  
} zM\IKo_"  
file://new InsertSort().sort(data); )1K! [ W}t  
insertSort(data); H}a)^90_  
}  )Oo2<:"  
/** 1V0sl0i4  
* @param data A{1 \f*  
*/ WN1Jm:5YV  
private void insertSort(int[] data) { >F~ITk5`Oo  
int temp; ysl8LK   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]qMH=>pOsj  
} Eh {up  
} *F|i&2  
} +#9xA6,AE  
{sl~2#,}b1  
} l_ZO^E~D_  
>^ ;(c4C  
归并排序: {9Db9K^  
*afejjW[  
package org.rut.util.algorithm.support; PRZ8X{h  
B3eNFS  
import org.rut.util.algorithm.SortUtil; x g{VP7  
f~U#z7  
/** K:uQ#W.&  
* @author treeroot f%L:<4  
* @since 2006-2-2 C)U #T)  
* @version 1.0 A3<^ U  
*/ Xn PJC'  
public class MergeSort implements SortUtil.Sort{ e"lD`*U8R  
yr%yy+(.k  
/* (non-Javadoc) 98h :X%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5d%_Wb'  
*/ t[/\KG8  
public void sort(int[] data) { 2'|XtSj  
int[] temp=new int[data.length]; ,YQ=Zk)w  
mergeSort(data,temp,0,data.length-1); IL2e6b  
} wG;}TxrLS  
XNKtL]U}$  
private void mergeSort(int[] data,int[] temp,int l,int r){ g(KK9Unu  
int mid=(l+r)/2; n}VbdxlN  
if(l==r) return ; ~37R0`C  
mergeSort(data,temp,l,mid); 48H5_9>:  
mergeSort(data,temp,mid+1,r); IN<:P  
for(int i=l;i<=r;i++){ >G<4R o"  
temp=data; f_~}X#._  
} =obt"K%n  
int i1=l; PIgGXNo  
int i2=mid+1; 'w'Dwqhmr  
for(int cur=l;cur<=r;cur++){ U 7EHBW  
if(i1==mid+1) H]VsOr  
data[cur]=temp[i2++]; f 5mY;z"  
else if(i2>r) -e &$,R>;  
data[cur]=temp[i1++]; <=$rU232}  
else if(temp[i1] data[cur]=temp[i1++]; SgyqmYTvZw  
else VtD@&N  
data[cur]=temp[i2++]; D7EXqo  
} K<RmaXZ  
} 0BT;"B1  
)o86lH"z  
} sWp{Y.  
f%vHx,  
改进后的归并排序: l#tS.+B7  
"L ^TT2  
package org.rut.util.algorithm.support; 0W;q!H[G  
1d=0q?nH  
import org.rut.util.algorithm.SortUtil; j~X j  
{bW"~_6}  
/** qw6EPC  
* @author treeroot UIO6|*ka  
* @since 2006-2-2 7ytm .lU  
* @version 1.0 .L~fFns/  
*/ aIQrb  
public class ImprovedMergeSort implements SortUtil.Sort { !&'# a  
k,a,h^{}j  
private static final int THRESHOLD = 10; #"=%b e3  
 =|^X$H  
/* 'Na|#tPYI  
* (non-Javadoc) (qNco8QKu3  
* U p_>y>x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3s3a>  
*/ 58M'r{8_  
public void sort(int[] data) { I[tAT[ <  
int[] temp=new int[data.length]; >&*6Fqd  
mergeSort(data,temp,0,data.length-1); 0Ei\VVK>  
} LBW.*PHW  
N;e;4,_ n  
private void mergeSort(int[] data, int[] temp, int l, int r) { rdORNlK&  
int i, j, k; s 4MNVT  
int mid = (l + r) / 2; 'hxs((['\  
if (l == r) (3)C_Z  
return; QBg}2.  
if ((mid - l) >= THRESHOLD) -fb1cv~N  
mergeSort(data, temp, l, mid); /E=h{|  
else jXc5fXO N  
insertSort(data, l, mid - l + 1); d,Hf-zJ%~  
if ((r - mid) > THRESHOLD) ~r(g|?}P  
mergeSort(data, temp, mid + 1, r); _bN))9 3  
else <1ztj#B  
insertSort(data, mid + 1, r - mid); !O 0ZD4/{4  
"r5'lQI  
for (i = l; i <= mid; i++) { NTXws4'D  
temp = data; U'JP1\  
} m~Lf^gbG?  
for (j = 1; j <= r - mid; j++) { VZU Zngw  
temp[r - j + 1] = data[j + mid]; ,\.YJD>z  
} QT7w::ht  
int a = temp[l]; :6\-9m8JM  
int b = temp[r]; 1C^HCIH7J  
for (i = l, j = r, k = l; k <= r; k++) { jEC'l]l  
if (a < b) { pkrl@ jv >  
data[k] = temp[i++]; e_fg s>o`(  
a = temp; },?-$eyX  
} else { 7H8GkuO  
data[k] = temp[j--]; 44Seq  
b = temp[j]; P^'>dOI0w  
} 9+WY@du+  
} *Y| lO  
} Bbn832iMUY  
#o(?g-3  
/** *!-}lc^4  
* @param data fJSV)\e0  
* @param l (.jO:#eE%  
* @param i ?^e*UJNM  
*/  e B9m4  
private void insertSort(int[] data, int start, int len) { ;j[q?^ b  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7)ES!C   
} :X1`wBu  
} -ucz+{  
} <MI$N l  
} "B_5Y&pM`  
|THkS@Br  
堆排序: @j)f(Zlu#  
/NPl2\o.  
package org.rut.util.algorithm.support; >tE,8  
$g}/T_26  
import org.rut.util.algorithm.SortUtil; LbtlcpF*~5  
1Ud t9$~T  
/** YyX^lL_  
* @author treeroot brp N >\  
* @since 2006-2-2 [A.eVuV;+  
* @version 1.0 Rx_,J%0Fq  
*/ rm7*l<v6  
public class HeapSort implements SortUtil.Sort{ 'tq\<y  
M8 ^ziZY  
/* (non-Javadoc) S[\cT:{OE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ESkG  
*/ m%BMd  
public void sort(int[] data) { jS5t?0  
MaxHeap h=new MaxHeap(); f"} 0j|Gg  
h.init(data); UC?2mdLt^  
for(int i=0;i h.remove(); @n ~ND).  
System.arraycopy(h.queue,1,data,0,data.length); RN cI]oJ  
} N@%xLJF=N>  
o$qFa9|Ec?  
private static class MaxHeap{ Yp?a=R  
qqO10~Xc  
void init(int[] data){ 9v5.4a}  
this.queue=new int[data.length+1]; x r+E  
for(int i=0;i queue[++size]=data; A7I8Z6&  
fixUp(size); 7@e[:>e  
} %oSfL;W7  
} j3V"d3)  
R[ +]d|L  
private int size=0; MOH,'@&6^  
T8M[eSbZ  
private int[] queue; 5BGv^Qb_2  
<try%p|f  
public int get() { /ab K/8ZQ  
return queue[1]; E`sapk  
} ej??j<]  
G%W03c  
public void remove() { v~W6yjp  
SortUtil.swap(queue,1,size--); zL[U;  
fixDown(1); @N:3`[oB  
} m8j#{[NE  
file://fixdown :`!mCW`Q-  
private void fixDown(int k) { 9R t(G_'  
int j; nu1w:  
while ((j = k << 1) <= size) { H~1? MAX  
if (j < size %26amp;%26amp; queue[j] j++; ./5MsHfbxt  
if (queue[k]>queue[j]) file://不用交换 sB*h`vs0T  
break; JqH.QnKcv  
SortUtil.swap(queue,j,k); u0$5Fd&X  
k = j; ]>]H:NEq  
} ;Vtpq3  
} S+E3;' H  
private void fixUp(int k) { hGaYQgGq  
while (k > 1) { _tg3%X]  
int j = k >> 1; OkO@BWL  
if (queue[j]>queue[k]) 9BgQ oK@  
break; mhHm#  
SortUtil.swap(queue,j,k); ::Ve,-0  
k = j; n$\6}\k  
} KcMzZ!d7m  
} Lh5+fk~i~8  
l<+,(E=  
} <P Z\qE*+y  
_ZvX"{y~  
} EWvid4QEi  
9DocId.  
SortUtil: h?O%XnD  
}e;p8)]Wl  
package org.rut.util.algorithm; nh_xbo5L[  
70 D Q/b  
import org.rut.util.algorithm.support.BubbleSort; j(2tbWg9-  
import org.rut.util.algorithm.support.HeapSort; oU{-B$w  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8i+jFSZ$  
import org.rut.util.algorithm.support.ImprovedQuickSort; C^ k3*N  
import org.rut.util.algorithm.support.InsertSort; 3ks|  
import org.rut.util.algorithm.support.MergeSort; hc~#l#  
import org.rut.util.algorithm.support.QuickSort; +\]S<T*;  
import org.rut.util.algorithm.support.SelectionSort; )7BNzj"~  
import org.rut.util.algorithm.support.ShellSort; i\c^h;wX  
]`+"o[  
/** ?2 O-EiWjZ  
* @author treeroot J5r L7  
* @since 2006-2-2 #onfac-3  
* @version 1.0 X wn|.  
*/ Y{\2wU!Isn  
public class SortUtil { m]b.P,~v  
public final static int INSERT = 1; jl|X$w  
public final static int BUBBLE = 2; i =+<7]Q  
public final static int SELECTION = 3; 9= ;g4I  
public final static int SHELL = 4; 9HBx[2&  
public final static int QUICK = 5; k@X As  
public final static int IMPROVED_QUICK = 6; [O =)FiY-  
public final static int MERGE = 7; Ql!6I(  
public final static int IMPROVED_MERGE = 8; eXtF[0f  
public final static int HEAP = 9; ~s^6Q#Z9|  
dYttse'  
public static void sort(int[] data) { /-} p7AM  
sort(data, IMPROVED_QUICK); dXr !_)i  
} $[9V'K  
private static String[] name={ PfMOc+ q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ay. q)  
}; 1F%*k &R  
9hi(P*%q   
private static Sort[] impl=new Sort[]{ {Eb2<;1o{  
new InsertSort(), $2Tty 7  
new BubbleSort(), E?W!.hbA  
new SelectionSort(), bu!<0AP"N+  
new ShellSort(), [ZpG+VAJ8  
new QuickSort(), a~+WL  
new ImprovedQuickSort(), z K]%qv]  
new MergeSort(),  7qdl,z  
new ImprovedMergeSort(), "gVH;<&]  
new HeapSort() QrRCsy70  
}; uY#58?>'j  
b8xfV{3L  
public static String toString(int algorithm){ nT6iS}h  
return name[algorithm-1]; "MKsSty  
} `rFGSq$9  
Pn){xfqDl  
public static void sort(int[] data, int algorithm) { t7& GCZ  
impl[algorithm-1].sort(data); _ -FQ78C  
} D}C*8s bC}  
C'#)bX{  
public static interface Sort { 6j.(l4}  
public void sort(int[] data); MkIO0&0O  
} 2H0q\zZ  
"VhrsVT  
public static void swap(int[] data, int i, int j) { z[I/ AORl  
int temp = data; ,}$x'8v  
data = data[j]; %1l80Z  
data[j] = temp; st^N QL  
} UVi/Be#|  
} 5s2}nIe  
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