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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。 xd0 L{ue.  
插入排序: %N_%JK\{@  
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package org.rut.util.algorithm.support; uvS)8-o&F  
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import org.rut.util.algorithm.SortUtil; S`]k>' l  
/** "J3x_~,[4m  
* @author treeroot >`D:-huNeE  
* @since 2006-2-2 wI "U7vr  
* @version 1.0 ??/ 'kmd  
*/ L{Vqh0QD&  
public class InsertSort implements SortUtil.Sort{ -35;j'a  
SZCze"`[  
/* (non-Javadoc) K"@M,8hb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uoix  
*/ BfiD9ka-z  
public void sort(int[] data) { ~7Ux@Sx;  
int temp; yEQs:v6L~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /2VJX@h  
} FXU8[j0P_G  
} Qe(:|q _  
} ku M$UYTTX  
h!9ei6  
} _u9Jxw?F@Y  
G  .4X'  
冒泡排序: ] @fk] ]R  
|(^PS8wG  
package org.rut.util.algorithm.support; 11;zNjD|  
@`Su0W+.  
import org.rut.util.algorithm.SortUtil; r#mx~OVkk  
-`6+UkOV[x  
/** P0jtp7)7  
* @author treeroot Fv`,3aNB  
* @since 2006-2-2 sW8dPw O  
* @version 1.0 "tpSg  
*/ `5Zz5V  
public class BubbleSort implements SortUtil.Sort{ T^]}Oy@e,J  
Z;)%%V%o  
/* (non-Javadoc) B4 }bVjs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) he hFEyx  
*/ ^T-V ^^#(  
public void sort(int[] data) { S:ztXhif>  
int temp; sdmT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b5n'=doR/I  
if(data[j] SortUtil.swap(data,j,j-1); lsNd_7k  
} iO; 7t@]-  
} ,~W|]/b<q  
} FJ?IUy 6  
} Q#zmf24W  
_v]MsT-q  
} \xoP)Ub>  
0#^v{DC  
选择排序: <1M-Ro?5k  
;t`&n['N>  
package org.rut.util.algorithm.support; U :_^#\p  
\1Em`nvOX  
import org.rut.util.algorithm.SortUtil; r" ,GC]  
sCHJ&>m5-  
/** NQ2E  
* @author treeroot [}]Q?*_  
* @since 2006-2-2 S>1Iky|  
* @version 1.0 -A!%*9Z  
*/ 7Hu3>4<  
public class SelectionSort implements SortUtil.Sort { P7/X|M z  
FaJ&GOM,  
/* W `}Rf\g  
* (non-Javadoc) E-g_".agO  
* `*KHS A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jRV/A!4  
*/ v|2T%y_ u  
public void sort(int[] data) { iAU@Yg`pt  
int temp; =w0R$&b&  
for (int i = 0; i < data.length; i++) { :*\Pn!r  
int lowIndex = i; bA->{OPkT  
for (int j = data.length - 1; j > i; j--) { GR32S=\  
if (data[j] < data[lowIndex]) { Yg1  X  
lowIndex = j; !g2+w$YVa  
} sD wqH.L  
} lHX72s|V  
SortUtil.swap(data,i,lowIndex); b;UJ 88  
} cYt!n5w~W  
} $E.I84UfX  
N87B8rDl  
} ?FcAXA/J{  
cExS7~*  
Shell排序: *;*r 8[U}q  
rw #$lP  
package org.rut.util.algorithm.support; um0N)&iY  
P";'jVcR  
import org.rut.util.algorithm.SortUtil; 83q6Sv  
^y%T~dLkp'  
/** n.0fVV-A  
* @author treeroot ZJs$STJ*  
* @since 2006-2-2 o " #\ >  
* @version 1.0 IO-Ow!  
*/ [ibu/ W$  
public class ShellSort implements SortUtil.Sort{ vRO _Q?  
wAW5 Z0D  
/* (non-Javadoc) %bfQ$a:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9q[oa5INd  
*/ S^\Vgi(  
public void sort(int[] data) { lU8`F(Mn  
for(int i=data.length/2;i>2;i/=2){ /I0%Z+`=  
for(int j=0;j insertSort(data,j,i); 3:i@II  
} TWFr 4-  
} Ciz X<Cr}  
insertSort(data,0,1); 3/n5#&c\4  
} Jze:[MYS  
JFk lUgg  
/** 9-*uPK]m9  
* @param data omBoo5e  
* @param j s!7y  
* @param i k+pr \d~  
*/ `+Q%oj#FF  
private void insertSort(int[] data, int start, int inc) { j8lb~0JD  
int temp; 9;-p'C  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %8~NqS|=  
}  a!AA]  
} SI-Ops~e  
} jtc]>]6i  
NHZz _a=  
} W9GVt$T7  
%d<"l~<5;  
快速排序: 7O-x<P;  
_zi|  
package org.rut.util.algorithm.support; WEi2=3dV  
0Z{ZO*rK  
import org.rut.util.algorithm.SortUtil; ~FG]wNgS  
:X (=z;B;N  
/** G*P#]eO  
* @author treeroot ^3L0w}#  
* @since 2006-2-2 7E~;xn;  
* @version 1.0 fS78>*K  
*/ wi6 ~}~%  
public class QuickSort implements SortUtil.Sort{ uk<9&{  
)|=j`jCC  
/* (non-Javadoc) ]-/VHh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?2Py_gkf  
*/ wEvVL  
public void sort(int[] data) { Qn)a/w-  
quickSort(data,0,data.length-1); b B3powy9  
} UrEs4R1#  
private void quickSort(int[] data,int i,int j){ + @s"zp;F  
int pivotIndex=(i+j)/2; O[JL+g4  
file://swap 6G""I]uT  
SortUtil.swap(data,pivotIndex,j); o]I\6,T/|  
%/#NK1&M  
int k=partition(data,i-1,j,data[j]); {[?(9u7R  
SortUtil.swap(data,k,j); 1NA.nw.  
if((k-i)>1) quickSort(data,i,k-1); ^sLdAC  
if((j-k)>1) quickSort(data,k+1,j); Cd}<a?m,  
68WO~*  
} \n|EM@=eE  
/** nk' s_a*Z  
* @param data sN01rtB(UT  
* @param i 6zuTQ^pz  
* @param j fHd#u%63K  
* @return $C$V%5aA  
*/ V{3x!+q  
private int partition(int[] data, int l, int r,int pivot) { [j/9neaye  
do{ N~zdWnSZ@G  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #fn)k1  
SortUtil.swap(data,l,r); 6fEqqUeV  
} pYmk1!]/  
while(l SortUtil.swap(data,l,r); %S^8c  
return l; .;`AAH'k  
} K} X&AJ5A  
_TQj~W<  
} }l} Bo.C  
t)$:0  
改进后的快速排序: "n5N[1b k  
Ig0VW)@  
package org.rut.util.algorithm.support; _H7x9 y=  
#( 146  
import org.rut.util.algorithm.SortUtil; N)\. [v  
<FkFs{(t  
/** EDl!w:  
* @author treeroot l L@XM2"  
* @since 2006-2-2 y(yHt= r  
* @version 1.0 HJ[cM6$2  
*/ O:{~urV  
public class ImprovedQuickSort implements SortUtil.Sort { #yF&X(%  
a fW@T2  
private static int MAX_STACK_SIZE=4096; YHygo#4=8  
private static int THRESHOLD=10; Pw`8Wj  
/* (non-Javadoc) yZU6xY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,G?WAOy,  
*/ h_,i&d@(  
public void sort(int[] data) { j@3Q;F0ba  
int[] stack=new int[MAX_STACK_SIZE]; r1{@Ucw2  
">,|V-H  
int top=-1; LG|fq/;  
int pivot; +.b,AqJ/  
int pivotIndex,l,r; .2Elr(&*h  
yEoF4bt  
stack[++top]=0; Ww+IWW@  
stack[++top]=data.length-1; Ad9}9!<  
x,pjpx  
while(top>0){ l'E*=Rn  
int j=stack[top--]; paE[rS\  
int i=stack[top--]; 3J|F?M"N7  
}?_?V&K|  
pivotIndex=(i+j)/2; 4-y :/8  
pivot=data[pivotIndex]; By",rD- r  
:v&$o'Sak  
SortUtil.swap(data,pivotIndex,j); |a`Sc %  
u$Jz~:=,  
file://partition 6@F9G 4<Z  
l=i-1; ep)n_!$OH"  
r=j; `V)8 QRN(  
do{ +`3)oPV)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ' ;FnIZ  
SortUtil.swap(data,l,r); Ma']?Rb`  
} S3*`jF>q  
while(l SortUtil.swap(data,l,r); h-K_Lr]  
SortUtil.swap(data,l,j); vm7z,FfN  
@&3EJ1  
if((l-i)>THRESHOLD){ lc1(t:"[  
stack[++top]=i; qUW! G&R  
stack[++top]=l-1; ;LPfXpR  
} G3vxjD<DMW  
if((j-l)>THRESHOLD){ &P}_bx  
stack[++top]=l+1; UapC"XYJ  
stack[++top]=j; aU "8{  
} li'YDtMKCY  
 JWhdMU  
} RVA (Q[ ;  
file://new InsertSort().sort(data); Val|n*%  
insertSort(data); /}fHt^2H  
} {{D)YldtA  
/** *-=(Q`3  
* @param data mt+Oi70  
*/ 7yH"l9Z  
private void insertSort(int[] data) { }1c|gQ  
int temp; PI:4m%[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e L^ |v  
} )D5"ap]fX  
} $m{:C;UH  
}  v zs)[AD  
8f)?{AX0  
} Fg5kX  
0$)>D==  
归并排序: *ebSq)  
{JO  
package org.rut.util.algorithm.support; 7cT~oV !G_  
p{ Yv3dNl  
import org.rut.util.algorithm.SortUtil; F^t DL:  
Vvn2 Ep  
/** 2~1SQ.Q<RY  
* @author treeroot Is)u }  
* @since 2006-2-2 m '|b GV  
* @version 1.0 oWim}Er=  
*/ FxtQXu-g  
public class MergeSort implements SortUtil.Sort{ F|o:W75  
j_!F*yul  
/* (non-Javadoc) 7{)G_?Q&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Zt`u,;  
*/ 5j<mbt}  
public void sort(int[] data) { :uq\+(9  
int[] temp=new int[data.length]; ,]ma+(|  
mergeSort(data,temp,0,data.length-1); tqvN0vY5  
} D9 CaFu  
{W =%U|f  
private void mergeSort(int[] data,int[] temp,int l,int r){ t7dt*D_YqK  
int mid=(l+r)/2; 4n !aW?%  
if(l==r) return ; .9on@S  
mergeSort(data,temp,l,mid); z0p*Z&  
mergeSort(data,temp,mid+1,r); hk(ZM#Bh  
for(int i=l;i<=r;i++){ <EB+1GFuI  
temp=data; [#<-ZC#T*  
} @fZ,.2ar  
int i1=l; |mdVdD~go  
int i2=mid+1; ( iBl   
for(int cur=l;cur<=r;cur++){  3s,g*  
if(i1==mid+1) 7a =gH2]&  
data[cur]=temp[i2++]; ?cBwPetp  
else if(i2>r) 3nIU1e  
data[cur]=temp[i1++]; fo*2:?K&  
else if(temp[i1] data[cur]=temp[i1++]; H1pO!>M  
else =)H.c uc  
data[cur]=temp[i2++]; w(*vj  
} +qtJaYf/0  
} (lBCO?`fx  
(>UZ<2GPL  
} 2\A$6N ;_  
Ja7R2-0ii#  
改进后的归并排序: dh`K`b4I  
=w_Ype`  
package org.rut.util.algorithm.support; RE7?KR>  
t9kzw*U9  
import org.rut.util.algorithm.SortUtil; $k@O`xD,q  
??-[eB.  
/** W+aP}rZm:  
* @author treeroot 67JA=,EE  
* @since 2006-2-2 1b `1{%  
* @version 1.0 ~drS} V  
*/ zH?!  
public class ImprovedMergeSort implements SortUtil.Sort { VuhGx:Xl  
*KZYv=s,u  
private static final int THRESHOLD = 10; ?mwt~_s9  
6"L cJ%o  
/* U2tV4_ e  
* (non-Javadoc) iW]j9}t  
* v}}F,c(f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Utn\l  
*/ b$d;Qx  
public void sort(int[] data) { '%s.^kn  
int[] temp=new int[data.length];  acajHs  
mergeSort(data,temp,0,data.length-1); Ex Y]Sdx  
} MnsJEvn/  
$-OA'QwB]  
private void mergeSort(int[] data, int[] temp, int l, int r) { BM%e0n7  
int i, j, k; APn|\  
int mid = (l + r) / 2; m)ky*"(  
if (l == r) . oF &Ff/[  
return; |sJ[0z  
if ((mid - l) >= THRESHOLD) *.ll<p+(-  
mergeSort(data, temp, l, mid); y2Q&s 9$Do  
else Maha$n*  
insertSort(data, l, mid - l + 1); d\&U*=  
if ((r - mid) > THRESHOLD) |k )=0mCz  
mergeSort(data, temp, mid + 1, r); }Sm(]y  
else lK?uXr7^  
insertSort(data, mid + 1, r - mid); LiC*@W  
4M=]wR;  
for (i = l; i <= mid; i++) { rT=rrvV3g  
temp = data; ?qv !w~m<  
} <,3a3  
for (j = 1; j <= r - mid; j++) { BA@lk+aW  
temp[r - j + 1] = data[j + mid]; FZ{h?#2?  
} -P(efYk  
int a = temp[l]; j nkR}wAA  
int b = temp[r]; G)AqbY  
for (i = l, j = r, k = l; k <= r; k++) { 1jmjg~W  
if (a < b) { -V*R\,>  
data[k] = temp[i++]; GL>O4S<`  
a = temp; afCW(zH p  
} else { /H[=5  
data[k] = temp[j--]; Hck]aKI+  
b = temp[j]; <O(4TO  
} |%BOZT  
} 70 yFaW  
} fF!Yp iI"  
h/QXPdV  
/** !4ocZmj\  
* @param data wm+};L&_  
* @param l q\9JgD)  
* @param i F#3Q_G^/  
*/ j"8ZM{aO  
private void insertSort(int[] data, int start, int len) { SpIv#?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [$ubNk;!z  
} lB8-Z ow  
} lne|5{h  
} BwN0!lsF3  
} E'f{i:O "~  
juP7P[d$qW  
堆排序: =eq[:K<6  
: p1u(hflS  
package org.rut.util.algorithm.support; 7zl5yK N  
PF0_8,@U  
import org.rut.util.algorithm.SortUtil; 'NbHa!  
G~]Uk*M q  
/** >1X|^  
* @author treeroot F0m-23[H  
* @since 2006-2-2 Ucb F|vkI  
* @version 1.0 .y'>[  
*/ c^5~QGuQ  
public class HeapSort implements SortUtil.Sort{ vJLK,[  
s2a{>II6  
/* (non-Javadoc) {Ea b j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7RQR)DG  
*/ "-E\[@/  
public void sort(int[] data) { &.F4 b~A7  
MaxHeap h=new MaxHeap(); SjK  
h.init(data); ,Y@Gyx!4  
for(int i=0;i h.remove(); 4XL^D~V  
System.arraycopy(h.queue,1,data,0,data.length); oe ~'o'  
} :ffY6L+  
HRpte=`q  
private static class MaxHeap{ f'F?MINJP  
Q*GN`07@?d  
void init(int[] data){ mwO6g~@ `  
this.queue=new int[data.length+1]; ^23~ZHu  
for(int i=0;i queue[++size]=data; 1wii8B6  
fixUp(size); 2zX]\s?3  
} B4ZBq%Z_  
} ynp8r f  
YByLoM*  
private int size=0; Q1lyj7c#x  
V~qNyOtA]  
private int[] queue; ~ \r*  
HGl|-nW>  
public int get() { TbMW|0 #w  
return queue[1]; \a<wKTkn  
} hy9\57_#  
1l9 G[o *  
public void remove() { [=C6U_vU  
SortUtil.swap(queue,1,size--); v<k?Vu  
fixDown(1); ;cNv\t  
} y-Fo=y  
file://fixdown ^ G]J,+  
private void fixDown(int k) { -$\y_?}  
int j; }YQX~="  
while ((j = k << 1) <= size) { Xa[.3=bV?  
if (j < size %26amp;%26amp; queue[j] j++; )Dm s  
if (queue[k]>queue[j]) file://不用交换 @ 8(q$  
break; ,.S~ Y  
SortUtil.swap(queue,j,k); 9p85Pv [M=  
k = j; z>xmRs   
} rD tY[  
} K&u_R  
private void fixUp(int k) { cUk7i`M;6  
while (k > 1) { `Uq#W+r,  
int j = k >> 1; vN}#Kc\  
if (queue[j]>queue[k]) O}gV`q;  
break; ~ZaY!(R<  
SortUtil.swap(queue,j,k); eNh39er  
k = j; EZgwF =lO  
} \eTwXe]Pv  
} F k7?xc  
" > ypIR<  
} .Cv6kgB@c  
8H[<X_/ke  
} Y+pHd\$-4  
TT%M' 5&  
SortUtil: _IMW {  
e v}S+!|U  
package org.rut.util.algorithm; +SzU  
3qgS&js 7  
import org.rut.util.algorithm.support.BubbleSort; uuEV_"X  
import org.rut.util.algorithm.support.HeapSort; 6dQ-HI*Y#  
import org.rut.util.algorithm.support.ImprovedMergeSort; a9e>iU  
import org.rut.util.algorithm.support.ImprovedQuickSort; t mn tp  
import org.rut.util.algorithm.support.InsertSort; wKh4|Ka  
import org.rut.util.algorithm.support.MergeSort; hw uiu*  
import org.rut.util.algorithm.support.QuickSort; ]Ee?6]bN  
import org.rut.util.algorithm.support.SelectionSort; VO5#Qgen  
import org.rut.util.algorithm.support.ShellSort; %jJG>T  
s3N'02G  
/** _{ue8kGt  
* @author treeroot ,O5NLg-  
* @since 2006-2-2 E*& vy  
* @version 1.0 Ha#= (9.  
*/ d2FswF$C  
public class SortUtil { -12UN(&&Z  
public final static int INSERT = 1;  ,i NXK  
public final static int BUBBLE = 2; @ )F)S 7  
public final static int SELECTION = 3; eSn+B;  
public final static int SHELL = 4; 1y &\5kB  
public final static int QUICK = 5; @3i\%R)n;  
public final static int IMPROVED_QUICK = 6; bG"~"ipn%  
public final static int MERGE = 7; +.8 \p5  
public final static int IMPROVED_MERGE = 8; rw[ph[\X  
public final static int HEAP = 9; k?yoQL*  
r wL`Czs  
public static void sort(int[] data) { HdI8f!X'TG  
sort(data, IMPROVED_QUICK); PN%zIkbo  
} ^S<Y>Nm]  
private static String[] name={ Y>z>11yEB0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W.jGGt\<\  
}; o)|flI'vT  
')Zvp7>$  
private static Sort[] impl=new Sort[]{ 7O2/z:$f  
new InsertSort(), 8LJ8 }%*  
new BubbleSort(), &, vcJ{.  
new SelectionSort(), ,oe <  
new ShellSort(), u]wZQl#-  
new QuickSort(), .8g)av+  
new ImprovedQuickSort(), ~%F9%=  
new MergeSort(), Ufj`euY  
new ImprovedMergeSort(), ,^r9n[M4M  
new HeapSort() )iX~}7  
}; o#)C^xlQ  
 'c&Ed  
public static String toString(int algorithm){ T.F!+  
return name[algorithm-1]; hW' )Sp  
} P;y45b  
RU{twL.B  
public static void sort(int[] data, int algorithm) { ? V1*cVD6i  
impl[algorithm-1].sort(data); yu {d! {6  
} t,Lrfv])  
>{ ]%F*p4  
public static interface Sort { G5_=H,Vmd  
public void sort(int[] data); g'f@H-KCD  
} tIi&;tw]  
BR_1MG'{)$  
public static void swap(int[] data, int i, int j) { Z#jZRNU%ox  
int temp = data; pQ">UL*  
data = data[j]; iU918!!N   
data[j] = temp; LP^$AAy  
} H'5)UX@LP  
} eIF5ZPSZi  
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