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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。 z%L\EP;o}  
插入排序: IZ+ZIR@}ci  
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package org.rut.util.algorithm.support; &n& ndq  
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import org.rut.util.algorithm.SortUtil; ro@`S:  
/** @*~cmf&FIQ  
* @author treeroot `z`"0;,7S  
* @since 2006-2-2 ]WC@*3'kye  
* @version 1.0 j;i7.B"[  
*/ Dad*6;+N  
public class InsertSort implements SortUtil.Sort{ v iM6q<Ht  
 Z_?r5M;  
/* (non-Javadoc) LgoUD*MbQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1V2"sE  
*/ nsV;6^>  
public void sort(int[] data) { }G[Qm2k  
int temp; 7_AcvsdW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4[m4u6z=  
} %!Ak]|[7  
} P 4jg]g  
} 4 O~zkg  
wLH[rwPr  
} n$(_(&  
O8WLulo  
冒泡排序: nHmi%R7k  
RU GhhK  
package org.rut.util.algorithm.support; npdpKd+*K"  
{!7 ^ w  
import org.rut.util.algorithm.SortUtil; +"2IQme5  
i^u5j\pfY*  
/** l+i9)Fc<i  
* @author treeroot !3#*hL1fy  
* @since 2006-2-2 "]D2}E>U;  
* @version 1.0 6/eh~ME=  
*/ F;_L/8Ov1  
public class BubbleSort implements SortUtil.Sort{ ?W4IAbT\G  
[#6Eax,j  
/* (non-Javadoc) ^H UNq[sQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E;^~}  
*/ w>$2  
public void sort(int[] data) { xQ7-4 N,  
int temp; sDvtk]4o-4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4V0j1 k&'  
if(data[j] SortUtil.swap(data,j,j-1); HX:rVHY  
} }[*BC5{>  
} o  w<.Dh  
} ] 6rr;S  
} y9L:2f\  
Wo+'j $k  
} 5//.q;z  
SB' $?Kh  
选择排序: X"qC&oZmf  
:TzHI    
package org.rut.util.algorithm.support; d*xKq"+ &E  
6P KH%  
import org.rut.util.algorithm.SortUtil; 4RV5:&ALLS  
o Z#4<7K  
/** tMWsgK.B  
* @author treeroot 8P'zQ:#RV  
* @since 2006-2-2 -hIDL'5u-I  
* @version 1.0 i''[ u  
*/ 2qD80W<1  
public class SelectionSort implements SortUtil.Sort { 5w+X   
h&}XG\ioNA  
/* F7zBm53  
* (non-Javadoc) 4^mpQ.]lO  
* Cp 2$I<T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [EETx-  
*/ A12#v,  
public void sort(int[] data) { Pe_iA_  
int temp; A<zSh }eh6  
for (int i = 0; i < data.length; i++) { =c,m)\u/8  
int lowIndex = i; |tU4(hC  
for (int j = data.length - 1; j > i; j--) { J `8bh~7  
if (data[j] < data[lowIndex]) { vpGeG  
lowIndex = j; 3,cZ*4('d  
} lJloa'%v9  
} iCYo?>  
SortUtil.swap(data,i,lowIndex); ^Pk-<b4}  
} tOK lCc  
} wv8WqYV  
s innHQ  
} \)pT+QxZ  
H1FSN6'  
Shell排序: v<z%\`y  
A9[ELD>p  
package org.rut.util.algorithm.support; x;cjl6Acm  
x\m !3  
import org.rut.util.algorithm.SortUtil; SBY  
gL+8fX2G6  
/** \*0ow`|K  
* @author treeroot PKhH0O\_U  
* @since 2006-2-2 jz_\B(m9%  
* @version 1.0 mG!Rh  
*/ $DOBC@xxzT  
public class ShellSort implements SortUtil.Sort{ [C]u!\(IF  
H *gF>1  
/* (non-Javadoc) #lM :BO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >d&_e[j  
*/ 0N~AQu  
public void sort(int[] data) { gZ*8F|sg  
for(int i=data.length/2;i>2;i/=2){ Jm|eZDp  
for(int j=0;j insertSort(data,j,i); Ub8|x]ix  
} DV(^h$1_  
} XO*62 >Ed  
insertSort(data,0,1); JR1/\F<}  
} 85<zl|ZD  
OE(Z)|LF  
/** _[8BAm  
* @param data '1[}PmhD  
* @param j bojx:g  
* @param i q1Vh]d  
*/ i6p0(OS&D  
private void insertSort(int[] data, int start, int inc) { -o\r]24  
int temp;  2L~[dn.s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j"aimjqd3  
} \h DH81L  
} AKVll  
} Htseu`>_$  
0i2ZgOJ  
} DbdxHuKa>  
!YlyUHD  
快速排序: #TLqo(/  
FfnW  
package org.rut.util.algorithm.support; 821@qr|`e  
mJaWzR  
import org.rut.util.algorithm.SortUtil; }];8v+M  
+ j._NRXRH  
/** /h=:heS4$  
* @author treeroot V/Q~NX N  
* @since 2006-2-2 \lVxlc0{?  
* @version 1.0 `b^eRnpR  
*/ OchIEF "N  
public class QuickSort implements SortUtil.Sort{ 72qbxPY13h  
f>Mg.9gJ(  
/* (non-Javadoc) 51Yq>'8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0^VA,QkQ\  
*/ 5+<<:5_6l  
public void sort(int[] data) { Zb)j2Xgl  
quickSort(data,0,data.length-1); []D@"Bz  
} $okGqu8z.O  
private void quickSort(int[] data,int i,int j){ "=0#pH1o  
int pivotIndex=(i+j)/2; Y4Hi<JWo  
file://swap n%lY7.z8d  
SortUtil.swap(data,pivotIndex,j); _u$X.5Q;  
io_4d2uBh  
int k=partition(data,i-1,j,data[j]); _q >>]{5  
SortUtil.swap(data,k,j); /=9t$u|  
if((k-i)>1) quickSort(data,i,k-1); 8-Ik .,}  
if((j-k)>1) quickSort(data,k+1,j); je6H}eWTC6  
v Dgf}  
} :^+ aJ]  
/** K8{Ub  
* @param data F2yc&mXyk  
* @param i P%hi*0pwZ  
* @param j zmH8#  
* @return kK]JN  
*/ /xmUu0H$R  
private int partition(int[] data, int l, int r,int pivot) { >1[Hk0 <x  
do{ Fa`/i v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;Ub;AqY  
SortUtil.swap(data,l,r); u%FG% j?C  
} &h.E B  
while(l SortUtil.swap(data,l,r); ^NB @wuf7  
return l; "wi=aV9j  
} Iy\{)+}aS  
pCOr{I\  
} =k#SQ/@  
L 0?-W%$>  
改进后的快速排序: L Of0_g/  
f S50  
package org.rut.util.algorithm.support; KUG\C\z6=  
 l`x;Og>a  
import org.rut.util.algorithm.SortUtil; nmlQ-V-  
: [o0Va2 d  
/** k23*F0Dv  
* @author treeroot Vk/CV2  
* @since 2006-2-2 mAkR<\?iTF  
* @version 1.0 *Z*4L|zT  
*/ d5gYJ/Qv  
public class ImprovedQuickSort implements SortUtil.Sort { ?ic7M  
^J3\ U{B  
private static int MAX_STACK_SIZE=4096; qF m=(J%  
private static int THRESHOLD=10; 9s\;,!b  
/* (non-Javadoc) N>?R,XM V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lYkm1  
*/ ;W6P$@'zs  
public void sort(int[] data) { ?[>+'6  
int[] stack=new int[MAX_STACK_SIZE]; wykk</eQ.i  
-=aI!7*"$  
int top=-1; *k:Sg*neVq  
int pivot; RX.n7Tb  
int pivotIndex,l,r; trL:qD+{(  
UTw f!  
stack[++top]=0; HMbF#!E  
stack[++top]=data.length-1; V3O<l}ak  
D&q-L[tA@  
while(top>0){ iJ HOLz"!  
int j=stack[top--]; H~1&hF"d  
int i=stack[top--]; -g'[1  
pj.}VF!d  
pivotIndex=(i+j)/2; B d$i%.r  
pivot=data[pivotIndex]; @RW=(&<1  
E"7 iU  
SortUtil.swap(data,pivotIndex,j); 5tMp@$F\{[  
vy?Zz<c;  
file://partition 6; g_}Zx  
l=i-1; NLHF3h=?1p  
r=j; !\.%^LK1  
do{ [!E pv<G  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k 9 Xi|Yj  
SortUtil.swap(data,l,r); ml$"C  
} mF\r]ovVm  
while(l SortUtil.swap(data,l,r); ]9]cef=h#  
SortUtil.swap(data,l,j); eyK=F:GO  
'&{`^l/ MH  
if((l-i)>THRESHOLD){ |T:' G  
stack[++top]=i; e1ru#'z  
stack[++top]=l-1; >gqM|-uY  
} MM8r*T4g/  
if((j-l)>THRESHOLD){ }Z5#{Sd  
stack[++top]=l+1; D_fgxl  
stack[++top]=j; q~9Y&>D  
} y'ULhDgq^B  
O(BAw  
}  u!TVvc  
file://new InsertSort().sort(data); L=W8Q8hf  
insertSort(data); [5$=G@ zf  
} Q C?*O?~#  
/** dLQV>oF  
* @param data L1;IXCc=  
*/ 9$F '*{8  
private void insertSort(int[] data) { g7G=ga  
int temp; GmoY~}cg~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "|&xUWJ!)  
} 8Qtd,  
} O?|st$g  
} $ftcYBZa  
[ix45xu7  
} sV{M#UF2  
|7XV! D!\g  
归并排序: DuJbWtA  
,&$w*D%  
package org.rut.util.algorithm.support; nzI}w7>VU  
FFGG6r  
import org.rut.util.algorithm.SortUtil; G%N3h'zDi  
VHhW_ya1g{  
/** H6Q1r[(B  
* @author treeroot %,Fx qw  
* @since 2006-2-2 ][R#Q;y<  
* @version 1.0 NQCJ '%L6  
*/ wIT0A-Por4  
public class MergeSort implements SortUtil.Sort{ NYb eIfL  
4#H~g @  
/* (non-Javadoc) m:@-]U@ 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T^9k,J(rM  
*/ @ m14x}H  
public void sort(int[] data) { SenDJv00  
int[] temp=new int[data.length]; 8':^tMd  
mergeSort(data,temp,0,data.length-1); M5DW!^  
} yj!4L&A  
W ~sP7&sp  
private void mergeSort(int[] data,int[] temp,int l,int r){ ooa>~!91P  
int mid=(l+r)/2; 'LY.7cW  
if(l==r) return ; ^b-o  
mergeSort(data,temp,l,mid); -DgJkyt+<  
mergeSort(data,temp,mid+1,r); gGl}~  
for(int i=l;i<=r;i++){ Zr`pOUk!4  
temp=data; @?,iy?BSG  
} `8$gaA*  
int i1=l; Z~O1$,Z  
int i2=mid+1; afEhC0j  
for(int cur=l;cur<=r;cur++){ i^LLKx7M&  
if(i1==mid+1) u Ey>7I  
data[cur]=temp[i2++]; }r`m(z$z  
else if(i2>r) Ar@" K!TS  
data[cur]=temp[i1++]; k!Y7 Rc{"  
else if(temp[i1] data[cur]=temp[i1++]; /$v0Rq9  
else  #P8R  
data[cur]=temp[i2++]; /DPD,bA  
} v6B}ov[Y2  
} U2  0@B`<  
-z"=d<@  
} 6J3:[7k=&  
*T(z4RVg  
改进后的归并排序: g~EJja;  
FSnF>3kj-  
package org.rut.util.algorithm.support; WZkAlg7Z  
lFMQT ;  
import org.rut.util.algorithm.SortUtil; @SA:64 9  
"/v{B?~%!  
/** ~4HS 2\  
* @author treeroot |y+<|fb,a  
* @since 2006-2-2 'urn5[i  
* @version 1.0 Jr/|nhGl5  
*/ 4N&4TUIM  
public class ImprovedMergeSort implements SortUtil.Sort { {ir8n731p  
'xO5Le(=M  
private static final int THRESHOLD = 10; z:C VzK,  
u_+64c_7  
/* FM\yf ]'  
* (non-Javadoc) Qs(WyP#  
* Un{hI`3]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5.st!Lp1  
*/ (<RZZ{m  
public void sort(int[] data) { {<XPE:1>Y  
int[] temp=new int[data.length]; =b+W*vUAw  
mergeSort(data,temp,0,data.length-1); HFV4S]U=  
} ~@8r-[  
b65V*Vbj  
private void mergeSort(int[] data, int[] temp, int l, int r) { D@5Ud)_  
int i, j, k; ,dhSc<:LT  
int mid = (l + r) / 2; i}C9  
if (l == r) hq}kAv4B=  
return; >0yx!Iao  
if ((mid - l) >= THRESHOLD) YcJZG|[  
mergeSort(data, temp, l, mid); |TCHPKN  
else 6|q\ M  
insertSort(data, l, mid - l + 1); \nQV{J  
if ((r - mid) > THRESHOLD) l(;~9u0sa  
mergeSort(data, temp, mid + 1, r); q'u^v PO  
else o&tETJ5Bhe  
insertSort(data, mid + 1, r - mid); N 2|?I(\B  
*`]LbS  
for (i = l; i <= mid; i++) { EjZ_|Q  
temp = data; >l|ao&z>bm  
} :xdl I`S  
for (j = 1; j <= r - mid; j++) { [kfLT::mT  
temp[r - j + 1] = data[j + mid]; Eg&oAY.U  
} #:E}Eby/6I  
int a = temp[l]; <=fYz^|XT  
int b = temp[r]; w9QY2v,U  
for (i = l, j = r, k = l; k <= r; k++) { nW1Obu8x|  
if (a < b) { rkw^RW^  
data[k] = temp[i++]; [T8BQn!  
a = temp; [ 0? *J<d  
} else { <=m@Sg{o  
data[k] = temp[j--]; ySyA!Z  
b = temp[j]; Oj6PmUK4  
} G[34:J  
} ~N{ 7  
} Ko6>h  
{.vU;  
/** 3@'3U?Hin  
* @param data }u"iA^'Ot  
* @param l <[7 bUB  
* @param i (of=hzT^?  
*/ rGPFPsMQ]  
private void insertSort(int[] data, int start, int len) { C'4gve 7!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bUR; d78  
} O3Jp:.ps  
} yXg #<H6V  
} DI/yHs  
} 5i 56J1EC  
QFn .<@  
堆排序: ][Ne;F6  
lFHj]%Y  
package org.rut.util.algorithm.support; {rp5qgVE<  
:el]IH  
import org.rut.util.algorithm.SortUtil; LEnm6  
5v&mK 5zZ  
/** lPA:aHcj  
* @author treeroot .2y2Qm  
* @since 2006-2-2 & ,KxE(C  
* @version 1.0 njO5 YYOu  
*/ nJEm&"AI  
public class HeapSort implements SortUtil.Sort{ Yo`#G-]  
lLq9)+HGN  
/* (non-Javadoc) 7m{YWR0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KHK|Zu#k '  
*/ \EP<r  
public void sort(int[] data) { #=>t6B4af  
MaxHeap h=new MaxHeap(); XYeuYLut  
h.init(data); PjL"7^Q&  
for(int i=0;i h.remove(); @qC](5|TQ  
System.arraycopy(h.queue,1,data,0,data.length); } v#Tm  
} La$*)qD,  
:C%cnU;N  
private static class MaxHeap{ 8KQD w:  
&<Gs@UX~w  
void init(int[] data){ %<4ZU!2L  
this.queue=new int[data.length+1]; eVDO]5?  
for(int i=0;i queue[++size]=data; "qb1jv#to  
fixUp(size); 1y/_D$~ZO  
} 3`V #ImV>  
} [QC|Kd^#  
%XIPPEHU  
private int size=0; ;QVX'?  
i,77F!  
private int[] queue; irg% n  
e;Iz K]kP  
public int get() { XMt5o&U1  
return queue[1];  3+[R !  
} W<W5ih,#  
F=/@D)hND  
public void remove() { ;>#YOxPl  
SortUtil.swap(queue,1,size--); s>i`=[qFc  
fixDown(1); mW_B|dM"  
} c:%ll&Xtn  
file://fixdown -F&4<\=+  
private void fixDown(int k) { 1 uKWvp0\  
int j; o;d><  
while ((j = k << 1) <= size) { #!a}ZhIt  
if (j < size %26amp;%26amp; queue[j] j++; fu}ZOPu  
if (queue[k]>queue[j]) file://不用交换 ^ Tr )gik  
break; 6jdNQC$#B  
SortUtil.swap(queue,j,k); =Zg%& J  
k = j; qB%?t.k7  
} 1:L _qL  
} t%xD epFQ  
private void fixUp(int k) { h5vvizruy  
while (k > 1) { 'a}<|Et.  
int j = k >> 1; v5aHe_?lp  
if (queue[j]>queue[k]) x *p>l !  
break; x)+3SdH  
SortUtil.swap(queue,j,k); Sqt '}  
k = j; 85QVj] nr  
} ?3X(`:KB  
} JjD'2"z  
y@\R$`0J  
} 8&gr}r- 5  
#n9:8BKf  
} .BaU}-5  
)Ha`>  
SortUtil: "4 Lt:o4x  
Qxw?D4/Y  
package org.rut.util.algorithm; 5)IJ|"]y  
D^R=  
import org.rut.util.algorithm.support.BubbleSort; G-5 4D_ 4  
import org.rut.util.algorithm.support.HeapSort; f{m,?[1C,  
import org.rut.util.algorithm.support.ImprovedMergeSort; Kbdjd p  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?9F_E+!  
import org.rut.util.algorithm.support.InsertSort; 9KqN .  
import org.rut.util.algorithm.support.MergeSort; C(RZ09,.S  
import org.rut.util.algorithm.support.QuickSort; '+@q  
import org.rut.util.algorithm.support.SelectionSort; gj\'1(Ju  
import org.rut.util.algorithm.support.ShellSort; n0/H2>I[  
=th(Hdk17  
/** -AJ$-y  
* @author treeroot 0`{3|g  
* @since 2006-2-2 Rh=,]Y  
* @version 1.0 aGl*h" &  
*/ I U Mt^z  
public class SortUtil { ^rHG#^hA  
public final static int INSERT = 1; `|{6U"n  
public final static int BUBBLE = 2; {giKC)!  
public final static int SELECTION = 3; (wMiX i  
public final static int SHELL = 4; CG`s@5y>5  
public final static int QUICK = 5; __F?iRrCM  
public final static int IMPROVED_QUICK = 6; eU[f6OGqC  
public final static int MERGE = 7; f{} zqCK  
public final static int IMPROVED_MERGE = 8; 7W{xK'|]  
public final static int HEAP = 9; 3 &aBU [  
/b$0).fj@,  
public static void sort(int[] data) { V*$(Tt(  
sort(data, IMPROVED_QUICK); v#HaZT]u  
} ,-4SVj8$P  
private static String[] name={ ?PMF]ah  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CY"iP,nHl  
}; dn"&j1@KY  
5BztOYn,  
private static Sort[] impl=new Sort[]{ 0n'~wz"wB  
new InsertSort(), F"#8`Ps>  
new BubbleSort(), efK3{   
new SelectionSort(), C( ay7  
new ShellSort(), Lq-Di|6q  
new QuickSort(), a\UhOPFF  
new ImprovedQuickSort(), -zzM!1@F  
new MergeSort(), GzC=xXON  
new ImprovedMergeSort(), R(i2TAaaU  
new HeapSort() )ZyEn%  
}; I3{koI  
w2 L'j9  
public static String toString(int algorithm){ ftL>oOz[  
return name[algorithm-1]; * KDT0;/s  
} "agc*o~!F  
[f_4%Now  
public static void sort(int[] data, int algorithm) { rh8.kW-K_  
impl[algorithm-1].sort(data); Bi!j re  
} jK!Y-  
#P)7b,3pe  
public static interface Sort { gwf *M3(  
public void sort(int[] data); 1X5*V!u  
} l> Mth+ ,b  
(Wj2%*NT  
public static void swap(int[] data, int i, int j) { kLr6j-X  
int temp = data; Q%seV<!/  
data = data[j]; &_DRrp0CN  
data[j] = temp; ?r`UBR+[  
} {3jV ,S  
} 4f}:)M$5  
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