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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。 ;QidDi_s>  
插入排序: AP@<r  
3i(Jon/p  
package org.rut.util.algorithm.support; uu3M{*}  
i`~~+6`J  
import org.rut.util.algorithm.SortUtil; + zDc  
/** 6$z'wy/*  
* @author treeroot X8b#[40:  
* @since 2006-2-2 {bTeAfbf]  
* @version 1.0 n#>5?W  
*/ `cO|RhD @  
public class InsertSort implements SortUtil.Sort{ *aG"+c6|  
*:#Z+7x ]  
/* (non-Javadoc) Qu}N:P9l?X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h2&y<Eg>  
*/ Vi,Y@+4  
public void sort(int[] data) { Y`]rj-8f0B  
int temp; ,eK2I Ao  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q2Rf@nt  
} j)Lo'&Y~=  
} ?360SQ<  
} #01/(:7  
^N{X "  
} \P@S"QO  
]-EN/V  
冒泡排序: _Y7:!-n}   
\4@a  
package org.rut.util.algorithm.support; 'RQiLUF  
Loc8eToZ  
import org.rut.util.algorithm.SortUtil; !=knppY  
@SQceQfB  
/** u7u~  
* @author treeroot p|s2G~0<  
* @since 2006-2-2 LT& /0  
* @version 1.0 JilKZQmk  
*/ Re\o v x9  
public class BubbleSort implements SortUtil.Sort{ }6@%((9E 2  
W+/2c4$F3  
/* (non-Javadoc) w< mqe0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x Zg7Jg  
*/ [U']kt  
public void sort(int[] data) { bQpoXs0w;  
int temp; #8&#E?^d  
for(int i=0;i for(int j=data.length-1;j>i;j--){ /=- h:0{M  
if(data[j] SortUtil.swap(data,j,j-1); 8'% +G  
} 'rh\CA/}D  
} m>O2t-  
} ZZwBOGVU  
} >E~~7Yal  
g6`.qyVfz'  
} oo'iwq-\  
|} 9GHjG  
选择排序: qAbd xd[  
-rRz@Cr  
package org.rut.util.algorithm.support; +ruj  
Ss+F9J  
import org.rut.util.algorithm.SortUtil; 0O^U{#*$I  
xT/9kM&}L  
/** 0*{@E%9  
* @author treeroot .:SfM r;G  
* @since 2006-2-2 ,`+Bs&S 8  
* @version 1.0 $ JuLAqq  
*/ }R\B.2#M_@  
public class SelectionSort implements SortUtil.Sort { <@%ma2  
8m \;P  
/* #-A5Z;TD.  
* (non-Javadoc) E8 \\X  
* wb@]>MJ}[s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6XZN>#  
*/ .GtINhz*  
public void sort(int[] data) { 6eOxF8  
int temp; )biX8yq hR  
for (int i = 0; i < data.length; i++) { |B,dEx/uU  
int lowIndex = i; NrW[Q 3E$  
for (int j = data.length - 1; j > i; j--) { JfR kp  
if (data[j] < data[lowIndex]) { Zq9>VqGe  
lowIndex = j; 9/^d~ ZO  
} we @Yw6<  
} y.%i  
SortUtil.swap(data,i,lowIndex); cx<h_  
} vDWr|M%``l  
} EyzY2>"^  
}&=uZ:  
} cFe V?a  
;,R[]B01u  
Shell排序: E=3#TBd  
:E}6S  
package org.rut.util.algorithm.support; &(GopWR`e  
i^~sn `o  
import org.rut.util.algorithm.SortUtil; v)TUg0U=,  
 $.=5e3  
/** g+VRT, r  
* @author treeroot +~@7" |d  
* @since 2006-2-2 5BZ+b_A>VV  
* @version 1.0 EwC5[bRjUp  
*/ }`?7\\6  
public class ShellSort implements SortUtil.Sort{ JHHb|  
#V,LNX)  
/* (non-Javadoc) n&3iz05}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e3G7K8  
*/ .`b4h"g:  
public void sort(int[] data) { q=J9L Q  
for(int i=data.length/2;i>2;i/=2){ -i2D#i'  
for(int j=0;j insertSort(data,j,i); $HP/c Ku  
} 5^bh.uF  
} 3KB| NS  
insertSort(data,0,1); V,`!rJ  
} !>?4[|?n<  
JvT %R`i  
/** @263)`9G  
* @param data !^n1  
* @param j eUi> Mp  
* @param i +?ws !LgF  
*/ U;^CU!a  
private void insertSort(int[] data, int start, int inc) { 3}v0{c  
int temp; nYo&x'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A&x ab  
} # w i&n  
} ' }y]mFpF  
} 9<+;hH8J_r  
v#{G8'+%  
} )*"T  
+d|:s  
快速排序: 8') .o hD  
};4pZceV  
package org.rut.util.algorithm.support; \H},ou U  
B4PW4>GF  
import org.rut.util.algorithm.SortUtil; #i'C  
T2;v<(  
/** .~FKyP>[$  
* @author treeroot @&/s~3  
* @since 2006-2-2 3U :YA&K(  
* @version 1.0 `NYF?%  
*/ 7Y$4MMNQ  
public class QuickSort implements SortUtil.Sort{ ^Tb}]aHg  
^p{A!I!  
/* (non-Javadoc) =ip~J<sw&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u?LW+o  
*/ "H wVK  
public void sort(int[] data) { Lg\8NtP   
quickSort(data,0,data.length-1); #RCZA4>  
} >eYU$/80  
private void quickSort(int[] data,int i,int j){ U^vUdM"  
int pivotIndex=(i+j)/2; tg4LE?nv  
file://swap F5 :2TEA  
SortUtil.swap(data,pivotIndex,j); T)$ 6H}[c  
FY_avW  
int k=partition(data,i-1,j,data[j]); [flu |v  
SortUtil.swap(data,k,j); ^T uP=q5?  
if((k-i)>1) quickSort(data,i,k-1); G~b`O20N  
if((j-k)>1) quickSort(data,k+1,j); bW,BhUb,|  
E#IiyZ  
} N>W;0u!  
/** 7C,<iY  
* @param data  r{; VTQ  
* @param i ~*,Ddwr0a  
* @param j uD0(aqAZ  
* @return DctX9U(  
*/ x9FLr}e  
private int partition(int[] data, int l, int r,int pivot) { /h.:br?M#P  
do{ ~Hp#6+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A)O_es 2  
SortUtil.swap(data,l,r); M6o xtt4  
} 4eDmLC"Y *  
while(l SortUtil.swap(data,l,r); = !I8vQ>  
return l; u&?yPR  
} b<29wL1  
F``EARG)iu  
} %8rr*l5  
-52 @%uB  
改进后的快速排序:   2  
|IyM"UH  
package org.rut.util.algorithm.support; E.zYi7YUKK  
XZUB*P}]D  
import org.rut.util.algorithm.SortUtil; /h}wM6pg  
,u8ZS|9  
/** {Oc?C:aI=  
* @author treeroot t(uB66(_F  
* @since 2006-2-2 ~#IWM+I  
* @version 1.0 "Gi+zkVm  
*/ YG}p$\R  
public class ImprovedQuickSort implements SortUtil.Sort { X-*KQ+ ?  
{Kq*5Aq8  
private static int MAX_STACK_SIZE=4096; .&* ({UM  
private static int THRESHOLD=10; =DmPPl{  
/* (non-Javadoc) vkNZ -`+I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IxK 3,@d  
*/ ZYl-p]\*y  
public void sort(int[] data) { eY6gb!5u  
int[] stack=new int[MAX_STACK_SIZE]; @SF" )j|  
^-c si   
int top=-1; WNF=NNO-R  
int pivot; W_e-7=6  
int pivotIndex,l,r; "W,"qFx  
@vQ;>4i.  
stack[++top]=0; wt_?B_nR  
stack[++top]=data.length-1; nkr,  
OW[/%U>  
while(top>0){ kcma/d  
int j=stack[top--]; WL]Wu.k  
int i=stack[top--]; 6bA~mC^&  
$z`cMQ r  
pivotIndex=(i+j)/2; fed[^wW  
pivot=data[pivotIndex]; Z7KB?1{G  
~,`\D7Z3  
SortUtil.swap(data,pivotIndex,j); YDZ1@N}^B  
L&3Ar'  
file://partition !)51v {  
l=i-1; O)=73e\  
r=j; |~=?vw< W  
do{ zn?a|kt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =5s~$C  
SortUtil.swap(data,l,r); LNyL>VHkK  
} Js^r]=\F'  
while(l SortUtil.swap(data,l,r); @Z=y'yc'y.  
SortUtil.swap(data,l,j); 2\iD;Z#gM  
v0H>iKh7  
if((l-i)>THRESHOLD){ 1VPN#Q!  
stack[++top]=i; =w;xaxjL  
stack[++top]=l-1; Rm[rQ }:  
} +gD)Yd  
if((j-l)>THRESHOLD){ .x-Z+Rs{g  
stack[++top]=l+1; q9a wzj  
stack[++top]=j; NZw[.s>n  
} J~yd]L>  
*fuGVA  
} H pjIp.  
file://new InsertSort().sort(data); =%nqMV(y  
insertSort(data); CB{k;H  
} !z4Hj{A_  
/** -c<1H)W  
* @param data rTH[?mkf4  
*/ /K Jx n6  
private void insertSort(int[] data) { MRl*r K  
int temp; /S=;DxZ,r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ig?.*j ]  
} NdED8 iRc  
} Jj^<:t5{rN  
} 4{;8 ]/.a  
E#HU?<q8  
} _>:=<xyOq  
}mT%N eS  
归并排序: :BZx ) HxQ  
oRJP5Y5na  
package org.rut.util.algorithm.support; (1r>50Ge  
[2H(yLwO  
import org.rut.util.algorithm.SortUtil; *v7& T  
zf!\wY"`  
/** Pi]s<3PL  
* @author treeroot J!^~KN6[  
* @since 2006-2-2 OD@@O9  
* @version 1.0 scPq\Qd?O  
*/ 7+Jma!o  
public class MergeSort implements SortUtil.Sort{ &0<R:K?>N  
BoiIr[ (  
/* (non-Javadoc) kvO`]>#;$?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $xn%i\  
*/ (=&bo p  
public void sort(int[] data) { J/P@m_Yx  
int[] temp=new int[data.length]; {i7Fu+xZj  
mergeSort(data,temp,0,data.length-1); tU~H@'  
} Iz$W3#hi  
B6!<@* BI  
private void mergeSort(int[] data,int[] temp,int l,int r){ IkXKt8`YVA  
int mid=(l+r)/2; |EEz>ci  
if(l==r) return ; F*jj cUk  
mergeSort(data,temp,l,mid); '>WuukC  
mergeSort(data,temp,mid+1,r); YvP"W/5  
for(int i=l;i<=r;i++){ Qmc;s{-r;  
temp=data; .Mft+,"  
} `\u),$  
int i1=l; m=y,_Pz>U  
int i2=mid+1; z1KC$~{O  
for(int cur=l;cur<=r;cur++){ u{lDof>  
if(i1==mid+1) z?) RF[  
data[cur]=temp[i2++]; *$Wx*Jo  
else if(i2>r) $X\` 7`v  
data[cur]=temp[i1++]; 63dtO{:4  
else if(temp[i1] data[cur]=temp[i1++]; #?|1~HC  
else @aPu}Hi  
data[cur]=temp[i2++]; n~>CE"q  
} ws(}K+y_  
} +nyN+X34B  
y8WXp_\  
} &8YI)G%  
; dHOH\,:  
改进后的归并排序: VEYKrZA  
uB&I56  
package org.rut.util.algorithm.support; SIBIh-L  
BHBT=,sI  
import org.rut.util.algorithm.SortUtil; f+88R=-u6S  
.$s|T  
/** nF y7gA|  
* @author treeroot PNxO \Rc  
* @since 2006-2-2 %<*pM@  
* @version 1.0 {aa,#B] i  
*/ JP% ;rAoJ  
public class ImprovedMergeSort implements SortUtil.Sort { )*<d1$aM  
6g,3s?aT  
private static final int THRESHOLD = 10; 8{=( #]  
mbG^fy'  
/* WF.$gBH"  
* (non-Javadoc) 1B]wSvP@  
* d.(]V2X.J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IhKas4  
*/ +z?f,`.*  
public void sort(int[] data) { .$}zw|,q  
int[] temp=new int[data.length]; 5}^08Xl  
mergeSort(data,temp,0,data.length-1); L5|;VH  
} UU~;B  
n)7$xYuH  
private void mergeSort(int[] data, int[] temp, int l, int r) { [-94=|S @  
int i, j, k; \c^jaK5  
int mid = (l + r) / 2; O NzdCgY  
if (l == r) kk./-G  
return; X!HSS/'  
if ((mid - l) >= THRESHOLD) ^>}[[:(6/  
mergeSort(data, temp, l, mid); [67f;?b  
else d1_*!LW$  
insertSort(data, l, mid - l + 1); JRs[%w`kD  
if ((r - mid) > THRESHOLD) uC ;PP=z  
mergeSort(data, temp, mid + 1, r); q@yabuN@,j  
else _I"<?sh 3  
insertSort(data, mid + 1, r - mid); k.f:nv5JO  
iP\&fZY_  
for (i = l; i <= mid; i++) { I8wVvs;k  
temp = data; E6\~/=X=%  
} [?o v J  
for (j = 1; j <= r - mid; j++) { @9P9U`ZP  
temp[r - j + 1] = data[j + mid]; )s[S.`S Tz  
} H4",r5qw:  
int a = temp[l]; 6#63D>OWp  
int b = temp[r]; 4U1fPyt  
for (i = l, j = r, k = l; k <= r; k++) { 4!W?z2ly~R  
if (a < b) { wbKBwI5w  
data[k] = temp[i++]; !x / Z"  
a = temp; Pb&+(j  
} else { Jy NY *  
data[k] = temp[j--]; &IY_z0=  
b = temp[j]; -.3k vL  
} exU=!3Ji  
} otVdx&%]  
} 8pt<)Rs}  
FQRcZpv;  
/** MM$" 6Jor  
* @param data :@'0)7  
* @param l tF1%=&ss  
* @param i wD Y7B  
*/ gxtbu$  
private void insertSort(int[] data, int start, int len) { tdK^X1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AsF`A"Cdw<  
} 2G> ]W?>  
} j@\/]oL^We  
} k$- q; VI  
} rZ4<*Zegv  
T1[ZrY'0  
堆排序: "< R 2oo)^  
|VF"Cjw?  
package org.rut.util.algorithm.support; X,CF Y  
*%+buHe  
import org.rut.util.algorithm.SortUtil; f=Y9a$.:M  
;P#*R3   
/** t O;W?g  
* @author treeroot o fv 1G=P  
* @since 2006-2-2 %+J*oFwQu  
* @version 1.0 S*@0%|Q4r  
*/ .Sw'Bo!Ee  
public class HeapSort implements SortUtil.Sort{ =xP{f<`   
.Q@'Ob`  
/* (non-Javadoc) V2skr_1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [)c|oh%  
*/ 84cH|j`w  
public void sort(int[] data) { =i %w_ e  
MaxHeap h=new MaxHeap(); RL8 wSK  
h.init(data); ?saVk7Z[|5  
for(int i=0;i h.remove(); Ka2tr]+s  
System.arraycopy(h.queue,1,data,0,data.length); SXF_)1QO\W  
} !}48;Pl  
/a)=B)NH  
private static class MaxHeap{ ay[*b_f  
GQWTQIl]  
void init(int[] data){ d'D\#+%> =  
this.queue=new int[data.length+1]; ?"u-@E[m  
for(int i=0;i queue[++size]=data; Ux]@p rAq  
fixUp(size); 1yc@q8  
} E.9k%%X]  
} &$im^0`r_  
:N:8O^D^<  
private int size=0; )S?}huX  
H.K`#W&  
private int[] queue; w+P^c|  
yBKlp08J  
public int get() { `vBa.)u  
return queue[1]; i|'t!3I^m  
} pSUp"wch  
ZK*aVYnu  
public void remove() { y$NG..S  
SortUtil.swap(queue,1,size--); _.LWc^Sg  
fixDown(1); x*)O<K  
} @U5>w\  
file://fixdown NDG Bvb  
private void fixDown(int k) { k JFHUR  
int j; E+ 20->  
while ((j = k << 1) <= size) { rNp#5[e  
if (j < size %26amp;%26amp; queue[j] j++; Xpwom'  
if (queue[k]>queue[j]) file://不用交换 MqH~L?~}|  
break; z6(Q 3@iO  
SortUtil.swap(queue,j,k); Ba~Iy2\x  
k = j; 4VgDN(n0@  
} P^-9?u Bno  
} ?yK\L-ad  
private void fixUp(int k) { ]aL}&GlHt  
while (k > 1) { $vz%   
int j = k >> 1; ^Yz05\  
if (queue[j]>queue[k]) Z Z7U^#RT  
break; e vuP4-[y  
SortUtil.swap(queue,j,k); =<xbE;,0  
k = j; k =_@1b-  
} W -&5 v  
} _Oq\YQb v  
miqCUbcU  
} ;_\P;s  
p60D{UzU  
} Eq{TZV  
#C mBgxg+M  
SortUtil: pT tX[CE  
XvY-C  
package org.rut.util.algorithm; c-d}E!C:  
w.H+$=aK  
import org.rut.util.algorithm.support.BubbleSort; ?C3cPt"  
import org.rut.util.algorithm.support.HeapSort; lX3h'h  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3R {y68-S  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~O-8h0d3  
import org.rut.util.algorithm.support.InsertSort; =oJiNM5_u  
import org.rut.util.algorithm.support.MergeSort; X3yr6J[ ^  
import org.rut.util.algorithm.support.QuickSort; gG>>ynn  
import org.rut.util.algorithm.support.SelectionSort; AF6'JxG7  
import org.rut.util.algorithm.support.ShellSort; ba13^;fm#  
H=C;g)R  
/** cK&oC$[r-  
* @author treeroot %\0 Y1!Hw  
* @since 2006-2-2 KHtY +93  
* @version 1.0 *2F }e4v  
*/ _(foJRr  
public class SortUtil { s=4.Ovd\  
public final static int INSERT = 1; +&@0;zSga  
public final static int BUBBLE = 2; UEUTu}4y  
public final static int SELECTION = 3; ig{5 ]wZ(  
public final static int SHELL = 4; -s"lW 7N^  
public final static int QUICK = 5; iXFaQ  
public final static int IMPROVED_QUICK = 6; 9K!='u`  
public final static int MERGE = 7; .2xkf@OP  
public final static int IMPROVED_MERGE = 8; 2X_ef  
public final static int HEAP = 9; lDeWs%n  
)RFeF!("  
public static void sort(int[] data) { Sqs`E[G*  
sort(data, IMPROVED_QUICK); x#D=?/~/Kv  
} 3 6 ;hg #  
private static String[] name={ "f_Z.6WMY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a 2TC,   
}; }|,y`ui\  
"T|\  
private static Sort[] impl=new Sort[]{ ;H lv  
new InsertSort(), Cx[4 /~_<  
new BubbleSort(), iq$/ 6!t  
new SelectionSort(), /eQn$ZRP,  
new ShellSort(), %L3]l  
new QuickSort(), Pp2 )P7  
new ImprovedQuickSort(), N;Bal/kd2  
new MergeSort(), 'Nh^SbD+_|  
new ImprovedMergeSort(), bd4q/w4q  
new HeapSort() . +>}},  
}; x<(h9tB  
JN_# [S$  
public static String toString(int algorithm){ o9i\[Ul  
return name[algorithm-1]; }kpkHq"`f  
} &^.'g{\Y  
g5)VV"  
public static void sort(int[] data, int algorithm) { iweP3u##  
impl[algorithm-1].sort(data); 7 <xxOY>y  
} |Bp?"8%*l  
/!hW6u5  
public static interface Sort { rzu^br9X  
public void sort(int[] data); ;QYK {3R?  
} q)*0G*  
ArY'NE\Htt  
public static void swap(int[] data, int i, int j) { Z>l>@wNm  
int temp = data; L6^h3*JyD  
data = data[j]; s6B@:9  
data[j] = temp; Ty=}A MMyE  
} kbY@Y,:w  
} [C$ 0HW  
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