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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。 "iof -b=ys  
插入排序: a`w)awb  
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package org.rut.util.algorithm.support; L?^C\g6u]  
Q#bFW?>y,  
import org.rut.util.algorithm.SortUtil; V#TA%>  
/** e;=G|E  
* @author treeroot Hc@Z7eQ3^  
* @since 2006-2-2 (WW,]#^  
* @version 1.0 ~P5!VNJ;r  
*/ ^yRCR] oT  
public class InsertSort implements SortUtil.Sort{ >NwrJSx  
d]e`t"Aj  
/* (non-Javadoc)  FFgy=F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %;9e h'  
*/ @T1 >%oi  
public void sort(int[] data) { ?.A6HrAPB  
int temp; IBVP4&}x$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ze$:-7Czl  
} 1F5F2OT$8  
} [,5clR=F  
} nm'm*sU\  
B`hxF(_p/  
} y|KDh'Y  
@fpxGMy&  
冒泡排序: "0L@cOyG  
=]E1T8|  
package org.rut.util.algorithm.support; !*%3um  
CSU>nIE0  
import org.rut.util.algorithm.SortUtil; vS<;:3  
RpLm'~N'  
/** >[xQUf,p  
* @author treeroot "_)   
* @since 2006-2-2 }qz58]fyx  
* @version 1.0 `T9<}&=!  
*/ o7 !@WOeZ3  
public class BubbleSort implements SortUtil.Sort{ F{T|lTl  
dl{3fldb  
/* (non-Javadoc) `hlyN]L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "<O?KO 3K  
*/ *pasI.2s#  
public void sort(int[] data) { 6!Isz1.re  
int temp; EoY#D'[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 71/6=aq>n  
if(data[j] SortUtil.swap(data,j,j-1); 6ldDt?iSg  
} ;U`HvIch  
} |E7]69=P  
} m d C. FO-  
} Ar'5kPzY>  
xD lC]loi7  
} {{DW P-v4  
hrAI@.Bo  
选择排序: %)aDh }  
1g/mzC   
package org.rut.util.algorithm.support; V u! ,tpa.  
2=3iA09px  
import org.rut.util.algorithm.SortUtil; !E7/:t4  
|R[m&uOib  
/** zu|pL`X  
* @author treeroot vRY4N{v(<  
* @since 2006-2-2 U&eLj"XZ  
* @version 1.0 4*dT|NU  
*/ =q"3a9 pb7  
public class SelectionSort implements SortUtil.Sort { xjX5PQu  
5g&'n  
/* Aio0++ r-  
* (non-Javadoc) L]tyL)  
* uuC/F_='B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W@0(Y9jdg  
*/ ]JM9 ^F  
public void sort(int[] data) { "M*\,IH  
int temp; QWP_8$Q  
for (int i = 0; i < data.length; i++) { igQyn|  
int lowIndex = i; (p2a{v}fEz  
for (int j = data.length - 1; j > i; j--) { WMC6 dD_6e  
if (data[j] < data[lowIndex]) { (HJ60Hj  
lowIndex = j; 5y~[2jB:  
} `150$*K&B  
} ~gAx  
SortUtil.swap(data,i,lowIndex); a[JgR/E@x  
} G dooy~cn  
} bBQp:P?E  
:dj@i6  
} PQs9@]w[  
}Ag2c; aaq  
Shell排序: p*'?(o:=  
}l2JXf55  
package org.rut.util.algorithm.support; BdYh:  
O|/tRkDMP{  
import org.rut.util.algorithm.SortUtil; D *tBbV  
c*W$wr  
/** 1hN! 2Y:  
* @author treeroot z(=:J_N  
* @since 2006-2-2 >w'6ZDA*X  
* @version 1.0 Tv KX8m"  
*/ GQQ!3LwP\O  
public class ShellSort implements SortUtil.Sort{ ,8 .`;  
B?4\IXek  
/* (non-Javadoc) 5SjS~ 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #-`lLI:w0  
*/ O| 2Q- @D  
public void sort(int[] data) { 'SY &-<t(  
for(int i=data.length/2;i>2;i/=2){ yqU++;6  
for(int j=0;j insertSort(data,j,i); i>~?XVU  
} t>[r88v  
} ibq@0CR  
insertSort(data,0,1); w*}9;l  
} hG67%T'}A  
tX_eN  
/** wfdFGoy(  
* @param data o6r4tpiR5  
* @param j gM*s/,;O"  
* @param i t&xx-4  
*/ f.= E.%  
private void insertSort(int[] data, int start, int inc) { 4|(?Wt)5  
int temp; x\%eg w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); { nV zN(  
} GxkG$B  
} oxzNV&D[{`  
} q2Kn3{  
"Wm~\)t(  
} =6sXZ"_Tw  
|}`5< a!6U  
快速排序:  g{%';  
)=D&NO67Pq  
package org.rut.util.algorithm.support; lm|`Lh-  
]VvJ1Xn0  
import org.rut.util.algorithm.SortUtil; 8syo_sC |  
|(S W  
/** "|.(yN  
* @author treeroot I?K0bs+6  
* @since 2006-2-2 ZwMw g t  
* @version 1.0 <}%ir,8  
*/ xeI{i{8  
public class QuickSort implements SortUtil.Sort{ AVp [gr  
oo!g?X[[  
/* (non-Javadoc) }$-VI\96  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BGX@n#:  
*/ ng*%1;P  
public void sort(int[] data) { L,6Y=?  
quickSort(data,0,data.length-1); :~(im_r  
} ju#6 3  
private void quickSort(int[] data,int i,int j){ 4i,SiFKB  
int pivotIndex=(i+j)/2; CC\z_C*P-p  
file://swap ~S3eatM$9  
SortUtil.swap(data,pivotIndex,j); *3$,f>W^  
9QMn%8=j  
int k=partition(data,i-1,j,data[j]); :j ~5(K"  
SortUtil.swap(data,k,j); 8|({ _Z  
if((k-i)>1) quickSort(data,i,k-1); &wN 2l-  
if((j-k)>1) quickSort(data,k+1,j); >v[(w1?rX  
%'e(3;YI  
} Y9;Mey*oW  
/** Q(UGwd1  
* @param data {0 ~0  
* @param i Ct)MvZ  
* @param j 9$&e~^&B  
* @return j;)g+9`  
*/ "NU".q  
private int partition(int[] data, int l, int r,int pivot) { D,\=zX;  
do{ 1c#'5~nB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $VWzv4^:  
SortUtil.swap(data,l,r); 2~V Im#  
} &._!)al  
while(l SortUtil.swap(data,l,r); _m],(J=,z  
return l; m]\zt  
} pGY]Vw Y  
@@IA35'tc  
} |L;psK  
(:QQ7xc{}  
改进后的快速排序: Net)l@IB]  
GYC&P]  
package org.rut.util.algorithm.support; 5vf t}f  
G%!\ p:w  
import org.rut.util.algorithm.SortUtil; 8%<`$`FyU  
N@6OQ:,[F  
/**  7E`(8i  
* @author treeroot k-V I9H!,  
* @since 2006-2-2 SDHc[66'  
* @version 1.0 9T2A)a]0  
*/ xn@0pL3B~  
public class ImprovedQuickSort implements SortUtil.Sort { z,FTsR$x  
61W/BU7O  
private static int MAX_STACK_SIZE=4096; KC:4  
private static int THRESHOLD=10; l&*)r;9  
/* (non-Javadoc) TE%#$q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RX5.bVp eE  
*/ {|Ki^8h/p  
public void sort(int[] data) { 45sxF?GSwL  
int[] stack=new int[MAX_STACK_SIZE]; iN_D8dI  
U}w+`ZLN  
int top=-1; 9xn23*Fo  
int pivot; Xexe{h4t_>  
int pivotIndex,l,r; _]xt65TL  
4iNbK~5j  
stack[++top]=0; .^lb LN^2  
stack[++top]=data.length-1; 3;MjO*-  
rA1r#ksQ  
while(top>0){ $[iT~B$  
int j=stack[top--]; `n`"g<K)Q  
int i=stack[top--]; & 8' (  
,LW+7yD  
pivotIndex=(i+j)/2; }l( m5  
pivot=data[pivotIndex]; u:$x6/t  
030U7VT1  
SortUtil.swap(data,pivotIndex,j); HNy/ -  
F`0c?)  
file://partition "6N~2q,SW  
l=i-1; q{cp|#m#G  
r=j; 4r[pMJiq  
do{ x}&a{;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J+b!6t}mZn  
SortUtil.swap(data,l,r); T5S g2a1&  
} 4b2mtLn_  
while(l SortUtil.swap(data,l,r); g[s\~MF@s  
SortUtil.swap(data,l,j); ) p<fL  
<s/<b*T ^  
if((l-i)>THRESHOLD){ p x|>v8  
stack[++top]=i; *el(+ib%  
stack[++top]=l-1; ~#"7,rQp  
} *i?rJH  
if((j-l)>THRESHOLD){ 5BHOHw D{  
stack[++top]=l+1; :,NFFN  
stack[++top]=j; - LiPHHX<  
} V+O0k: o  
Fkc x+d  
}  .3a:n\tY  
file://new InsertSort().sort(data); kxm:g)`=[  
insertSort(data); %e Sm&`  
} e)HhnN@  
/** m\/,cc@,  
* @param data jQ_dw\ {0  
*/ 1xO!w+J#  
private void insertSort(int[] data) { f4'El2>-86  
int temp; U['JFLF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %9T~8L @.  
} -".kH<SWv  
} jj!N39f   
} x*me'?q  
m!5HRjOO  
} cX %:  
%1\v7Xw{9  
归并排序: B;z;vrrL  
V(;55ycr  
package org.rut.util.algorithm.support; *$i;o3  
%/l-A pu  
import org.rut.util.algorithm.SortUtil; -uA3Y  
5^i.;>(b  
/** /a[V!<"R  
* @author treeroot 17>5#JLP  
* @since 2006-2-2 [)#u<lZ<~  
* @version 1.0 tYs8)\{  
*/ \G$QNUU  
public class MergeSort implements SortUtil.Sort{ qDnCn H  
_1>SG2h{fV  
/* (non-Javadoc) :`0'GM" `  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J| SwQE~  
*/ t=n+3`g  
public void sort(int[] data) { k"">2#V  
int[] temp=new int[data.length]; XC|*A$x,  
mergeSort(data,temp,0,data.length-1); |DN^NhtE  
} "^;#f+0  
CO-Iar  
private void mergeSort(int[] data,int[] temp,int l,int r){ z)4UMR#b&  
int mid=(l+r)/2; {(rf/:X!p  
if(l==r) return ; O( VxMO  
mergeSort(data,temp,l,mid); +J|+es  
mergeSort(data,temp,mid+1,r); "\}b!gl$8  
for(int i=l;i<=r;i++){ {7vgHutp  
temp=data; JOBz{;:R{  
} _ XE;-weE  
int i1=l; 8 AFMn[{  
int i2=mid+1; 807al^s x  
for(int cur=l;cur<=r;cur++){ sffhPX\I  
if(i1==mid+1) B@ -|b  
data[cur]=temp[i2++]; ?4^} ;wDb2  
else if(i2>r) {!L=u/qs"  
data[cur]=temp[i1++]; 0|g[o:;fl_  
else if(temp[i1] data[cur]=temp[i1++]; '%R<"  
else Pp ,Um(  
data[cur]=temp[i2++]; :^ n*V6.4  
} ]k[x9,IU\y  
} Hi^35  
(Aorx #z  
} 6DB0ni  
hjkLVL  
改进后的归并排序: `M&P[ .9Pz  
9I85EcT^4"  
package org.rut.util.algorithm.support; >-b&v$  
 Nj+a2[  
import org.rut.util.algorithm.SortUtil; Z a! gbt  
sa*g  
/** /iplU  
* @author treeroot j_p`Ng  
* @since 2006-2-2 mjbTy"}"  
* @version 1.0 t<Ot|Ex  
*/ :$NsR*Cq*9  
public class ImprovedMergeSort implements SortUtil.Sort { *ot> WVB  
wTxbDT@H5  
private static final int THRESHOLD = 10; 8) HBh7/  
CphFv!k'Z  
/* S_6g~PHsr  
* (non-Javadoc) !NTH.U:g  
* P$_&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~(P&g7u  
*/ LT/mb2  
public void sort(int[] data) { )>V?+L5M  
int[] temp=new int[data.length]; zVw:7-  
mergeSort(data,temp,0,data.length-1); O5zE {#  
} u"`*DFjo*  
S`0NPGn;@[  
private void mergeSort(int[] data, int[] temp, int l, int r) { /'ZKST4  
int i, j, k; {=67XrWN1  
int mid = (l + r) / 2; R::zuv  
if (l == r) kO1}?dWpa  
return; lbTV$A  
if ((mid - l) >= THRESHOLD) ;r.EC}>m  
mergeSort(data, temp, l, mid); sef]>q  
else Huc|6~X  
insertSort(data, l, mid - l + 1); Zyu/|O g  
if ((r - mid) > THRESHOLD) ^XG*z?Tt  
mergeSort(data, temp, mid + 1, r); `PgdJrE  
else ZIDbqQu  
insertSort(data, mid + 1, r - mid); 7VAJJv3  
RbEKP(uw  
for (i = l; i <= mid; i++) { ygzxCn|#  
temp = data; .1#kD M  
} 0OnV0SIL  
for (j = 1; j <= r - mid; j++) { D<>@ %"%  
temp[r - j + 1] = data[j + mid]; Qs%B'9")  
} 2z\e\I  
int a = temp[l]; tlQC6Fb#  
int b = temp[r]; ,$N#Us(Wa  
for (i = l, j = r, k = l; k <= r; k++) { _[t8rl  
if (a < b) { o:~LF6A-  
data[k] = temp[i++]; 2%]Z Kd  
a = temp; Z.1> kZ  
} else { * ?]~ #  
data[k] = temp[j--]; [ c~kF+8  
b = temp[j]; MjD75hIZ  
} 6KRO{QK  
} eTbg7"waA  
} i{Ds&{  
\~~}N4  
/** wNYg$d0M  
* @param data 6;iJ*2f5V  
* @param l @1:0h9%  
* @param i 2YlH}fnH  
*/ 9t$]X>}  
private void insertSort(int[] data, int start, int len) { M'L;N!1A  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .4-,_`T?  
} /?*]lH.  
} G^;>8r  
} y >+mc7n  
} [0y$! f4  
!)pdamdA  
堆排序: Ef)yQ  
2VGg 6%  
package org.rut.util.algorithm.support; 'e!J06  
g[[;w*;z  
import org.rut.util.algorithm.SortUtil; CU)|-*uiK  
= 1.9/hW  
/** ] )}]/Qw  
* @author treeroot 8gy_Yj&{P  
* @since 2006-2-2 [yS#O\$'e  
* @version 1.0 [eUftr9&0  
*/ qfoD  
public class HeapSort implements SortUtil.Sort{ t#i,1aHA  
E3aDDFDH  
/* (non-Javadoc) N?P%-/7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <RNJ>>0  
*/ jE\Sm2G9  
public void sort(int[] data) { ep/Y^&$M  
MaxHeap h=new MaxHeap(); rXfy!rD_P_  
h.init(data); 7msAhz  
for(int i=0;i h.remove(); nh>K`+>co  
System.arraycopy(h.queue,1,data,0,data.length);  ._O  
} RQB 4s^t  
x1&W^~  
private static class MaxHeap{ cLVeT  
RsJ6OFcWV  
void init(int[] data){ CQh,~  
this.queue=new int[data.length+1]; NMOut@  
for(int i=0;i queue[++size]=data; 5L,}e<S$  
fixUp(size); Q[F}r`  
} U.!lTLjfLz  
} -Go 7"j  
??60,m:]  
private int size=0; y: m_tv0~0  
e [_m< e  
private int[] queue; mtz#}qD66  
L2Pujk  
public int get() { ^z6_Uw[  
return queue[1];  -!W<DJ*  
} rE9I>|tX  
!`41q=r  
public void remove() { V-'K6mn;  
SortUtil.swap(queue,1,size--); w }^ I  
fixDown(1); o6 E!IX+  
} X4l@woh%  
file://fixdown &e-U5'(6v_  
private void fixDown(int k) { \.YS%"Vz  
int j; K*UgX(xu4P  
while ((j = k << 1) <= size) { ,1OyN]f3  
if (j < size %26amp;%26amp; queue[j] j++; w }Uhd ,  
if (queue[k]>queue[j]) file://不用交换 b306&ZVEk  
break; HK|ynBAo  
SortUtil.swap(queue,j,k); &nBa=Enf  
k = j; %NL^WG:  
} D?XM,l+  
} [ i#zP  
private void fixUp(int k) { ^WBuMCe  
while (k > 1) { ;q N+^;,2  
int j = k >> 1; y E[#ze  
if (queue[j]>queue[k]) sBrI}[oyx  
break; 2{|h8oz  
SortUtil.swap(queue,j,k); 3gd&i  
k = j; J{^RkGF  
} GFr|E8  
} Hx ,0zS%>  
K2%w0ohC  
} ( Jz;W<E  
y ]?V~%  
} ME'|saP  
o sKKt?^?  
SortUtil: |2{wG 4  
M1KqY:9E  
package org.rut.util.algorithm; >jD[X5Y  
,#pXpAz/  
import org.rut.util.algorithm.support.BubbleSort; }.s~T#v  
import org.rut.util.algorithm.support.HeapSort; E[Cb|E  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z+@2"%W  
import org.rut.util.algorithm.support.ImprovedQuickSort; Qxj JN^Q  
import org.rut.util.algorithm.support.InsertSort; zOQ>d|p?X  
import org.rut.util.algorithm.support.MergeSort; "etPT@gF  
import org.rut.util.algorithm.support.QuickSort; 9k{PBAP  
import org.rut.util.algorithm.support.SelectionSort; w*R$o  
import org.rut.util.algorithm.support.ShellSort; _a1x\,R|DB  
..rOsg{  
/** VkZ7#  
* @author treeroot 72'5%*1  
* @since 2006-2-2 "I(xgx*  
* @version 1.0 BCA&mi3q  
*/ o}ZdTf=  
public class SortUtil { e=.]F*:J  
public final static int INSERT = 1; }sxYxn~  
public final static int BUBBLE = 2; r?/'!!4  
public final static int SELECTION = 3; (DI>5.x"  
public final static int SHELL = 4; cFJY^A  
public final static int QUICK = 5; RsYU59_Y  
public final static int IMPROVED_QUICK = 6; uC cYPvm  
public final static int MERGE = 7; Dd\jHF>u  
public final static int IMPROVED_MERGE = 8; 4ecP*g  
public final static int HEAP = 9; '*3h!lW1.  
EVGt 5z  
public static void sort(int[] data) { =zz ~kon9  
sort(data, IMPROVED_QUICK); *6VF $/rP  
} 8SGo9[U2  
private static String[] name={ O&Y*pOg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ' ET~  
}; MjU6/pO}L  
9g mW&{6q  
private static Sort[] impl=new Sort[]{ &wV]"&-  
new InsertSort(), %rv7Jy   
new BubbleSort(), b}"N`,0dO  
new SelectionSort(), -X"p:=;j  
new ShellSort(), 3qf Ym}d  
new QuickSort(), ZusEfh?  
new ImprovedQuickSort(), lz?$f4TzA  
new MergeSort(), Rd#WMo2Xd  
new ImprovedMergeSort(), y2^Y/)   
new HeapSort() @"^0%/2-  
}; '!eKTC>  
p"KFJ  
public static String toString(int algorithm){ :s7m4!EF  
return name[algorithm-1]; &__es{;P  
} 0"pAN[=K@  
fR(d  
public static void sort(int[] data, int algorithm) { 0|{u{w@!`  
impl[algorithm-1].sort(data); TOB]IrW  
} # mV{#B=  
=ACVE;L?  
public static interface Sort { AT2nVakL  
public void sort(int[] data); A\HxDIU  
} +nJgl8'^y  
|Uc_G13Y{D  
public static void swap(int[] data, int i, int j) { (KDD e}f  
int temp = data; sTn<#l6  
data = data[j]; ~T1 XLu  
data[j] = temp; )-a'{W/t  
} [PNT\ElT  
} tFp Ygff<  
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