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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。 569}Xbc/  
插入排序: 0iCPi)B  
39 {{7(hh  
package org.rut.util.algorithm.support; Qr# 1u  
k7tYa;C  
import org.rut.util.algorithm.SortUtil; .^) UO  
/** s08u @  
* @author treeroot rzp +:  
* @since 2006-2-2 ,mPnQ?  
* @version 1.0 Oo?,fw  
*/ 4E44Hzs  
public class InsertSort implements SortUtil.Sort{ D[O{(<9  
?}Z1(it0  
/* (non-Javadoc) E2GGEKrW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iAY!oZR(WT  
*/ \yrisp#`  
public void sort(int[] data) { K; FW  
int temp; <lr*ZSNY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H7i$xWs  
} k {-  
} H1!iP$1#V  
} SM[Bv9|0  
HxK$4I`  
} 9*6]&:fm  
\qsw"B*tv`  
冒泡排序: L]a`"CH:a$  
TEUY3z[g  
package org.rut.util.algorithm.support; KlK`;cr?  
\3Oij^l 0  
import org.rut.util.algorithm.SortUtil; @|ye qy_:  
2?Ye*-  
/** WS& kx~oQ  
* @author treeroot TJ?g%  
* @since 2006-2-2 =Nz0.:  
* @version 1.0 ,n2i@?NHZ  
*/ -#-p1^v}  
public class BubbleSort implements SortUtil.Sort{ 4 !`bZ`_Bw  
>k']T/%  
/* (non-Javadoc) Hy{ Q#fq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $]aBe !  
*/ [fu!AIQs  
public void sort(int[] data) { 3#wcKv%>&_  
int temp; A5#y?Aq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v"+k~:t*  
if(data[j] SortUtil.swap(data,j,j-1); XwM611  
} ujW1+Oj=~  
} fpM #XFj  
} (_* wt]"'  
} A`O<6   
]43[6Im  
} dsK&U\ej}  
Vbh6HqAHxJ  
选择排序: \^*< y-jL  
Y^$HrI(vq  
package org.rut.util.algorithm.support; <(@Syv)  
h%d^Gq~  
import org.rut.util.algorithm.SortUtil; "a1O01n  
Fb2%!0i  
/** _RMQy~&b  
* @author treeroot jdeva t,&u  
* @since 2006-2-2 j-]&'-h}#  
* @version 1.0 ba@ax3  
*/ %IL6ix  
public class SelectionSort implements SortUtil.Sort { yh;Y,;4  
Z.&\=qiY  
/* x@P{l&:>  
* (non-Javadoc) G,&%VQ3P>  
* iNcZ)m/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5IVksg  
*/ :lcea6iO  
public void sort(int[] data) { 9T2xU3UyY  
int temp; ?y},,  
for (int i = 0; i < data.length; i++) { (k-YI{D3  
int lowIndex = i; jm>3bd  
for (int j = data.length - 1; j > i; j--) { Hr;h4J  
if (data[j] < data[lowIndex]) { Z\X'd_1!  
lowIndex = j; qZ2&Xw.{1  
} Bt^K]F\  
} ~>ME'D~  
SortUtil.swap(data,i,lowIndex); ?4PQQd  
} {I%y;Aab8  
} _X5_ez^/=  
.R 44$F  
} t[.W$1=  
{}e^eJ  
Shell排序: !7H6i#g*  
QHf$f@bjI  
package org.rut.util.algorithm.support; ZIxRyo-i  
n1(?|aJ#1  
import org.rut.util.algorithm.SortUtil; (VHND%7P  
ty1fcdFZM  
/** D>ai.T%n  
* @author treeroot 5#:pT  
* @since 2006-2-2 lH BI  
* @version 1.0 O]u",J5  
*/ fhp)S",  
public class ShellSort implements SortUtil.Sort{ RcY[rnI6  
T)u4S[ &  
/* (non-Javadoc) $,1dQeE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wV <7pi  
*/ @ "d2.h  
public void sort(int[] data) { `LP!D  
for(int i=data.length/2;i>2;i/=2){ H^c0Kh+  
for(int j=0;j insertSort(data,j,i); X\GM/A  
} fhpX/WE6  
} dK?); *w]  
insertSort(data,0,1); &TN2 HZ-bJ  
} B5=3r1Ly  
N} />rD  
/** 8q_0,>w%  
* @param data 1/j$I~B   
* @param j G^h_ YjR`*  
* @param i \4~AI=aw,T  
*/ HR{s&ho  
private void insertSort(int[] data, int start, int inc) { 1 0N,?a  
int temp; B< ;==|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &a~=b,  
} =TcOnQj  
} ki\uTD`mf  
} 3l:QeZ  
T`L}[?w  
} 4_Rdp`x#J  
n`5WXpz4;  
快速排序: 4KIWb~0Y  
ySX/=T:<;  
package org.rut.util.algorithm.support; XSD%t8<LO  
xe:' 8J6L  
import org.rut.util.algorithm.SortUtil; FUTn  
#qL9{P<}  
/** n E :'Zxj  
* @author treeroot (9.yOc4  
* @since 2006-2-2 }Jxq'B  
* @version 1.0 {Bs+G/?o/  
*/ O8RzUg&  
public class QuickSort implements SortUtil.Sort{ 4 eh=f!(+  
XoL[ r67Z  
/* (non-Javadoc) sWxK~Yg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?z.Isvn  
*/ b :\D\X  
public void sort(int[] data) { P.4E{.)(  
quickSort(data,0,data.length-1); Zw=G@4xoU  
} mxtgb$*  
private void quickSort(int[] data,int i,int j){ Lt<oi8'N  
int pivotIndex=(i+j)/2; -{x(`9H;  
file://swap |'w^n  
SortUtil.swap(data,pivotIndex,j); WM< \e  
G.jQX'%4QG  
int k=partition(data,i-1,j,data[j]); t[O+B 6  
SortUtil.swap(data,k,j); {g=b]yg\o  
if((k-i)>1) quickSort(data,i,k-1); ,?=KgG1i  
if((j-k)>1) quickSort(data,k+1,j); E`E'<"{Yd  
(&Q)EBdm  
} H1UL.g%d=  
/** Z`xyb>$  
* @param data K`+vfqX  
* @param i & l^n4  
* @param j 0VG=?dq  
* @return }u^:MI  
*/ 5ZsDgOeY  
private int partition(int[] data, int l, int r,int pivot) { 22bT3  
do{ *PcVSEP/0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5Fe-=BX(  
SortUtil.swap(data,l,r); rt;gC[3\  
}  HD|sr{Z%  
while(l SortUtil.swap(data,l,r);  Ec.)!Hu  
return l; +FBi5h  
} aJQXJ,>Lv  
# ITLz!g E  
} s>J3\PC  
RK3.-  
改进后的快速排序: fk\5D[j^  
sA2o2~AmM  
package org.rut.util.algorithm.support; jEE_D +K  
Q!) z)-hI  
import org.rut.util.algorithm.SortUtil; "gg(tp45  
<j"O%y.  
/** A:xb!= 2  
* @author treeroot rgT%XhUS6f  
* @since 2006-2-2 n2;(1qr  
* @version 1.0 >Jiij  
*/ jaa/k@OG  
public class ImprovedQuickSort implements SortUtil.Sort { 8l?w=)Qy  
=#'+"+lQ }  
private static int MAX_STACK_SIZE=4096; 7 s-`QdWX  
private static int THRESHOLD=10; y[p6y[r*  
/* (non-Javadoc) Bfn]-]>sD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CRd_}  
*/ -&7=uRQk  
public void sort(int[] data) { ,*w>z  
int[] stack=new int[MAX_STACK_SIZE]; g\j>qUjs%Q  
C&oxi$J:p+  
int top=-1; FLEg0/m0  
int pivot; 6NSO>/E  
int pivotIndex,l,r; u= l0f6W  
r'PE5xqF  
stack[++top]=0; }{#7Z8   
stack[++top]=data.length-1; <tU :U<ea]  
C&FN#B  
while(top>0){ 0O^r.&{j>  
int j=stack[top--]; ]nHe$x!2]  
int i=stack[top--]; / (.'*biQ  
/J8o_EV  
pivotIndex=(i+j)/2; F]Pul|.l  
pivot=data[pivotIndex]; lk~dgky@  
K9}jR@jy$  
SortUtil.swap(data,pivotIndex,j); 6i^0T  
n4XMN\:g{  
file://partition ?9,YVylg  
l=i-1; jUZ[`f;  
r=j; W=M< c@  
do{ >]C<j4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FcY$k%;'Q  
SortUtil.swap(data,l,r); ;]"n?uo  
} ;\q<zO@x  
while(l SortUtil.swap(data,l,r); w0\4Wa  
SortUtil.swap(data,l,j); L&rO  6  
- Ra\^uz  
if((l-i)>THRESHOLD){ M Yu?&}%^  
stack[++top]=i; WY3_7k8u  
stack[++top]=l-1; U0zW9jB  
} &F9OZMK=  
if((j-l)>THRESHOLD){ {\F2*P  
stack[++top]=l+1; V9gVn?O0  
stack[++top]=j; @eA %(C  
} mn Qal>0~  
)m)h/_  
} JJ)y2  
file://new InsertSort().sort(data); O} (E(v  
insertSort(data); |#!eMJ&0  
} ./2Z?,  
/** \(wn@/yP'  
* @param data 1.uUMW  
*/ |\rSa^:5  
private void insertSort(int[] data) { /;[}=JL<Q  
int temp; }q/(D?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9k*^\@\\x  
} =nw,*q +  
} m*OLoZVy  
} "@aq@mY@  
|:\$n}K  
} qW+=g]x\  
ipgN<|`?@  
归并排序: ]gjr+GV  
K%kXS  
package org.rut.util.algorithm.support; oPp!*$V  
Qs~d_;  
import org.rut.util.algorithm.SortUtil; Bi$ 0{V Z8  
)Fw @afE~  
/** Dg1kbO=2  
* @author treeroot nmTm(?yE  
* @since 2006-2-2 zK[ 7:<  
* @version 1.0 5/zf x  
*/ Cca~Cq[%*(  
public class MergeSort implements SortUtil.Sort{ ;*n_N!v  
4o)(d=q  
/* (non-Javadoc) <=#lRZW[z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )R8%wk?2  
*/ Omp i~  
public void sort(int[] data) { dx k;@Tz  
int[] temp=new int[data.length]; " &_$V@S  
mergeSort(data,temp,0,data.length-1); _K*\}un2  
} EY,;e\7O,  
myEGibhK  
private void mergeSort(int[] data,int[] temp,int l,int r){ [u,hc/PL  
int mid=(l+r)/2; wpAw/-/  
if(l==r) return ; LuQ"E4;nY%  
mergeSort(data,temp,l,mid); Xp<A@2wt?  
mergeSort(data,temp,mid+1,r); ~R"]LbeY  
for(int i=l;i<=r;i++){ :|*Gnu  
temp=data; x e"4u JO  
} f)p>nW?Z  
int i1=l; c13vEn!c  
int i2=mid+1; C.b,]7i  
for(int cur=l;cur<=r;cur++){ T b5$  
if(i1==mid+1) x&Q+|b%  
data[cur]=temp[i2++]; Z[DetRc-  
else if(i2>r) rC* sNy2  
data[cur]=temp[i1++]; $]Q*E4(kV9  
else if(temp[i1] data[cur]=temp[i1++]; .rt8]%  
else "#_)G7W+e  
data[cur]=temp[i2++]; jh<TdvF2$  
} qAS70XjOF  
} /k4^&  
OpWC2t)  
} 34/]m/2NZK  
lBizC5t!o  
改进后的归并排序: (=S"Kvb~#  
7,) 67G;  
package org.rut.util.algorithm.support; )*psDjZ7*  
$gj+v+%N  
import org.rut.util.algorithm.SortUtil; qcR|E`k-G  
t~+{Hr) #y  
/** = ]dz1~/  
* @author treeroot Q#yu(  
* @since 2006-2-2 BK`Q)[  
* @version 1.0 0~PXa(!^K  
*/ I?^Q084  
public class ImprovedMergeSort implements SortUtil.Sort { Uxj<x`<1x  
%J/fg<W1  
private static final int THRESHOLD = 10; "z{_hp{T^  
^g}gT-l%  
/* =8$(i[;6w  
* (non-Javadoc) gQ[]  
* 97:t29N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fy4<  
*/ D[>XwL  
public void sort(int[] data) { IS5.i95m  
int[] temp=new int[data.length]; b@{%qh ,C  
mergeSort(data,temp,0,data.length-1); 2|T|K?R^  
} *_2O*{V  
(R;) 9I\  
private void mergeSort(int[] data, int[] temp, int l, int r) { {UV<=R,E  
int i, j, k; 1)P<cNj  
int mid = (l + r) / 2; CYTuj>Ww  
if (l == r) t5X G^3X@  
return; $ g1wK}B3  
if ((mid - l) >= THRESHOLD) N+C%Z[gt[  
mergeSort(data, temp, l, mid); >Rl0%!  
else O]$*EiO\  
insertSort(data, l, mid - l + 1); Et @=Ic^E  
if ((r - mid) > THRESHOLD) rA1zyZlz  
mergeSort(data, temp, mid + 1, r); ^5FJ}MMJf  
else ,Do$`yO+  
insertSort(data, mid + 1, r - mid); 2m)kyQ  
\ pe[V~F  
for (i = l; i <= mid; i++) { 36x5q 1  
temp = data; .dg 4gr\D  
} xy-$v   
for (j = 1; j <= r - mid; j++) { #G[ *2h~99  
temp[r - j + 1] = data[j + mid]; )DklOEO  
} pR@GvweA  
int a = temp[l]; <manv8*6  
int b = temp[r]; [+:mt</HN  
for (i = l, j = r, k = l; k <= r; k++) { 3;t@KuQ66  
if (a < b) { Q)%8NVs  
data[k] = temp[i++]; #LrCx"_&  
a = temp; %(dV|,|v  
} else { }K#&5E  
data[k] = temp[j--]; Y_Z &p#Q!  
b = temp[j]; P&-D0T_  
} @]y{M;  
} 8IT_mjj  
} D 7;~x]*  
@y;tk$e  
/** @=MZ6q  
* @param data 6>LQGO  
* @param l Chb 4VoE  
* @param i D@lAT#vA  
*/ y ? {PoNI  
private void insertSort(int[] data, int start, int len) { c^dl+-{Mc  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =A6u=  
} '^.=gTk  
} _>_y@-b  
} 0N3tsIm>  
} KOAz-h@6   
XCqfAcNQ  
堆排序: =xlYQ}-(a  
sGDrMAQt  
package org.rut.util.algorithm.support; S8W_$=4  
DoCQFSL  
import org.rut.util.algorithm.SortUtil; dZ]\1""#H  
^$&"<  
/** c@ZkX]g  
* @author treeroot 1TD&&EC  
* @since 2006-2-2 i-"h"nF"  
* @version 1.0 gn e #v  
*/ yw3U"/yw  
public class HeapSort implements SortUtil.Sort{ t UAY]BJ*s  
T0np<l]A  
/* (non-Javadoc) w'!}(Z5X?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [r~rIb%Zj  
*/  \3y=0  
public void sort(int[] data) { No92Y^~/  
MaxHeap h=new MaxHeap(); OL mBh3&  
h.init(data); ;hfG$ {l;  
for(int i=0;i h.remove(); |+4E 8;4_  
System.arraycopy(h.queue,1,data,0,data.length); ~A:;?A'.  
} b$`4Nn|  
<+i`W7  
private static class MaxHeap{ g:HbmXOBpj  
tWX+\ |  
void init(int[] data){ 2AdHj&XE  
this.queue=new int[data.length+1]; )l!&i?h%  
for(int i=0;i queue[++size]=data; J 1y2Qw$G  
fixUp(size); 9OJ\n|,(  
} y 4,T  
} s$nfY.C  
I!0$% ]F  
private int size=0; yQA"T?  
enD C#  
private int[] queue; DRB YH(  
i]^*J1a  
public int get() { :R|2z`b!  
return queue[1]; aY1#K6(y  
} I +4qu|0lA  
*i]Z=  
public void remove() { E/ed0'|m  
SortUtil.swap(queue,1,size--); XGrxzO|{  
fixDown(1); Rp@}9qijb  
} k f K"i  
file://fixdown )>A%FL9  
private void fixDown(int k) { 0 *Yivx6  
int j; C6T 9  
while ((j = k << 1) <= size) { Om?:X!l"  
if (j < size %26amp;%26amp; queue[j] j++; 0,D9\ Ebd  
if (queue[k]>queue[j]) file://不用交换 @}rfY9o'  
break; dU04/]modD  
SortUtil.swap(queue,j,k); {*]= qSz  
k = j; '?!<I  
} &MGgO\|6  
} Z`1o#yZ  
private void fixUp(int k) { A`8}J4  
while (k > 1) { ~zOU/8n ,F  
int j = k >> 1; o'}Z!@h  
if (queue[j]>queue[k]) qI%9MI;BV  
break; QX~72X=(  
SortUtil.swap(queue,j,k); Hd@T8 D*A  
k = j; <wGT s6  
} Xk fUPbU  
} BxN#Nk~  
[?r\b  
} eEds-&_  
WE8L?55_Au  
} t-ReT_D|;  
&)'kX  
SortUtil: vR.6^q  
%^@0tT  
package org.rut.util.algorithm; Fb4S /_ V  
-){^ Q:u  
import org.rut.util.algorithm.support.BubbleSort; oIR%{`3"I  
import org.rut.util.algorithm.support.HeapSort; x:wq"X  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1XKIK(l  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z.Y8z#[xg  
import org.rut.util.algorithm.support.InsertSort; Zo6a_`)d  
import org.rut.util.algorithm.support.MergeSort; ^J=txsx  
import org.rut.util.algorithm.support.QuickSort; _f2iz4  
import org.rut.util.algorithm.support.SelectionSort; 1~iBzPU2  
import org.rut.util.algorithm.support.ShellSort; /SM#hwFxJ&  
&7y1KwfXn  
/** WRyv >Y  
* @author treeroot 7&U+f:-w  
* @since 2006-2-2 E ^>7jf09,  
* @version 1.0 L$07u{Q  
*/ Vblf6qaBs  
public class SortUtil { 5suSR;8  
public final static int INSERT = 1; hdDI%3vk3  
public final static int BUBBLE = 2; a +Qj[pS  
public final static int SELECTION = 3; pDS4_u  
public final static int SHELL = 4; gG z_t,=  
public final static int QUICK = 5; M]:B: ;  
public final static int IMPROVED_QUICK = 6; sy#j+gZ   
public final static int MERGE = 7; L1w4WFWO  
public final static int IMPROVED_MERGE = 8; o\YdL2:X  
public final static int HEAP = 9; *} 4;1OVT  
]tV{#iIJ*  
public static void sort(int[] data) { *xNjhR]7v  
sort(data, IMPROVED_QUICK); HDG"a&$   
} FQ&VM6_  
private static String[] name={ SxQDqoA~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;@\J scNJ|  
}; x~,?Zj)n?C  
*m Tc4&*  
private static Sort[] impl=new Sort[]{ R}mWHB_h"  
new InsertSort(), UVRV7^eTe  
new BubbleSort(), 7`n8 OR4  
new SelectionSort(), `)_FO]m}jS  
new ShellSort(), 24k}~"We  
new QuickSort(), p+1B6j  
new ImprovedQuickSort(), H0Xda.Y(  
new MergeSort(), pNme jz:  
new ImprovedMergeSort(), E$fy*enON  
new HeapSort() R1%T>2"~&  
}; !f[N&se  
3JO:n6  
public static String toString(int algorithm){ B ~bU7.Cd  
return name[algorithm-1]; ?4dd|n  
} &%51jM<  
A)0m~+?{J  
public static void sort(int[] data, int algorithm) { 'n`$c{N<tM  
impl[algorithm-1].sort(data); , Vr6  
} w0OK. fj  
lcLxqnv  
public static interface Sort { m/c~2?-;  
public void sort(int[] data); T>?1+mruM  
} 5%$kAJZC-  
<t2?Oii;  
public static void swap(int[] data, int i, int j) { D#(Pg  
int temp = data; }=R|iz*,!  
data = data[j]; M4]|(A  
data[j] = temp; 1Ee>pbd  
} C8SNSeg  
} l1j   
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