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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。 k, v.U8  
插入排序: ;yk@`<  
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package org.rut.util.algorithm.support; 1YnDho;~  
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import org.rut.util.algorithm.SortUtil; W=)}=^N0  
/** )SDGj;j+  
* @author treeroot tO~H/0  
* @since 2006-2-2 M6?Qw=  
* @version 1.0 SxT:k,ji  
*/ Wdy2;a<\{  
public class InsertSort implements SortUtil.Sort{ SZwfYY!ft0  
(\R"v^  
/* (non-Javadoc) kV<VhBql!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f$WO{ J  
*/ r&ToUU 5  
public void sort(int[] data) { F1Z20)8K  
int temp; A0[flIl  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yobi$mnsy!  
} 2EE#60  
} = )(;  
} L YH9P-5H  
]i$CE|~  
} J::SFu=  
>/'WU79TYE  
冒泡排序: `C!Pe84(  
@69q// #B  
package org.rut.util.algorithm.support; *Li;:b"t  
QCtG #/  
import org.rut.util.algorithm.SortUtil; "sHD8TUX  
Bq@G@Qi  
/** $6oLiYFX;  
* @author treeroot R`$Odplh>  
* @since 2006-2-2 HDy[/7"  
* @version 1.0 VNytK_F0P  
*/ : wn![<`3q  
public class BubbleSort implements SortUtil.Sort{ e dD(s5  
TS1 k'<c?  
/* (non-Javadoc)  &$+yXN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1y?TyUP  
*/ @8_K^3-~e  
public void sort(int[] data) { Z3#3xG5pl  
int temp; "HYK~V  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2'@0|k,yC  
if(data[j] SortUtil.swap(data,j,j-1); ZGp8$Y>r  
} Y+G4:  
} Bq$bxuhV  
} cc^V~-ph  
} t~bjDV^`  
\{~x<<qFd  
} m*I5 \  
% mI q,  
选择排序: beIEy(rA  
].1R~7b  
package org.rut.util.algorithm.support; 1P[!B[;c  
4s$))x9p  
import org.rut.util.algorithm.SortUtil; da 2BQ;  
52%.^/  
/** wPG3Ap8L  
* @author treeroot I.( 9{  
* @since 2006-2-2 "+HZ~:~f  
* @version 1.0 4z$ eT  
*/ 7tt&/k?Q  
public class SelectionSort implements SortUtil.Sort { #D}NT*w/  
rP>5OLP  
/* ^Nc\D7( l  
* (non-Javadoc) "dkvk7zCP  
* 8ztY_"]3p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &i!.6M2  
*/ f:HRrKf9  
public void sort(int[] data) { zfxxPL'  
int temp; 02=eE|Y@  
for (int i = 0; i < data.length; i++) { Zo&U3b{Dy  
int lowIndex = i; 2 K` hH  
for (int j = data.length - 1; j > i; j--) { g4~{#P^i  
if (data[j] < data[lowIndex]) { :/1WJG:!  
lowIndex = j; Q04N  
} g/T`4"p[H  
} +i K.+B  
SortUtil.swap(data,i,lowIndex); t(s']r  
} 5$9j&&R  
} rgOB0[  
e+&/ Tq'2  
} a Fl(K\  
EnfSVG8kB8  
Shell排序: &{7%Vs TB  
W}T$Z  
package org.rut.util.algorithm.support; [zY9"B<3  
wtRAq/  
import org.rut.util.algorithm.SortUtil; xOEj+%M  
tF=96u_X  
/** -o=qYkyLK  
* @author treeroot 1o.]"~0:  
* @since 2006-2-2 'jfI1 ]q  
* @version 1.0 a7M8sZ?"  
*/ X\flx~  
public class ShellSort implements SortUtil.Sort{ JZai{0se  
'5{gWV`  
/* (non-Javadoc) m@TU2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eLl ;M4d  
*/ jg2>=}  
public void sort(int[] data) { 8vchLl#  
for(int i=data.length/2;i>2;i/=2){ g.z/%Lp K  
for(int j=0;j insertSort(data,j,i); i5:fn@&  
} "|&SC0*  
} %"{SGp  
insertSort(data,0,1); 1vQ*Br  
} _%.atW7  
glHHr  
/** HQ4o^WC  
* @param data cp]\<p('A  
* @param j edbzg #wy  
* @param i Pc1vf]  
*/ 0 5 `x$f  
private void insertSort(int[] data, int start, int inc) { k}JjSt1_A;  
int temp; B(E+2;!QF  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DQwbr\xy\  
} wl}Q|4rZ  
} esFBWJ  
} EK[~lIXg  
"-\I?k  
} .`iOWCS  
2}hEBw68  
快速排序: HjL+Wg  
`43E-'g  
package org.rut.util.algorithm.support; \vpUl  
(LQ*U3J]_  
import org.rut.util.algorithm.SortUtil; !.kj-==s{7  
_PQQ&e)E  
/** PYW~x@]k%,  
* @author treeroot {QJJw}!#  
* @since 2006-2-2 _?mu2!X  
* @version 1.0 V\4'Hd  
*/ 'V } -0  
public class QuickSort implements SortUtil.Sort{ Z+FJ cvYx  
[N.4 i" Cd  
/* (non-Javadoc) PC=b.H8P+W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b$%W<D  
*/ /_>S0  
public void sort(int[] data) { $xNZ.|al  
quickSort(data,0,data.length-1); uBH4E;[f  
} E ekX|*  
private void quickSort(int[] data,int i,int j){ @ 2Z{en?  
int pivotIndex=(i+j)/2; }eSaF@.  
file://swap CO-9-sQx  
SortUtil.swap(data,pivotIndex,j); 08cC rG  
ioz4kG!  
int k=partition(data,i-1,j,data[j]); -=@d2LY  
SortUtil.swap(data,k,j); _KLKa/3  
if((k-i)>1) quickSort(data,i,k-1); 8+^q9rLii  
if((j-k)>1) quickSort(data,k+1,j); RQ!kVM@  
=J<3B H^m  
} c7,p5[  
/** 1H{J T op  
* @param data Jf9a<[CcV  
* @param i ={B%qq  
* @param j 9J$N5  
* @return 4Zo.c* BZ  
*/ Wv8?G~>  
private int partition(int[] data, int l, int r,int pivot) { KZ>cfv-&a  
do{ :)p\a1I[*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4*P#3 B'@V  
SortUtil.swap(data,l,r); 2V:`':  
} #;z;8q  
while(l SortUtil.swap(data,l,r); ACctyGd  
return l; O,x[6P54P  
} e?,n>  
58V`I5_  
} `zw XfY,%  
r roI  
改进后的快速排序: e ^2n58  
[+ K jun_  
package org.rut.util.algorithm.support; _ VKBzOH  
h'jc4mu0  
import org.rut.util.algorithm.SortUtil; "m4. _4U  
<Z5-?wgf9  
/** j4k\5~yzS  
* @author treeroot 41Hv)}Yd  
* @since 2006-2-2 e#!%:M;4P  
* @version 1.0 %|AebxB'o  
*/ jmPnUn  
public class ImprovedQuickSort implements SortUtil.Sort { |Bz1u|uc  
c#( Hh{0  
private static int MAX_STACK_SIZE=4096; -Aaim`06bv  
private static int THRESHOLD=10; vhIZkz!9  
/* (non-Javadoc) m Q4(<,F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~t^ Umx"Ew  
*/ FUzN }"\1  
public void sort(int[] data) { t-B5,,`  
int[] stack=new int[MAX_STACK_SIZE]; ~@=(#tO.  
n+MWny  
int top=-1; =h0vdi%{  
int pivot; :e /*5ix  
int pivotIndex,l,r; h! =h0  
cD6S;PSg  
stack[++top]=0; hz:h>Hwy  
stack[++top]=data.length-1; 0xVw{k}1U  
=HMa<"-8  
while(top>0){ x<5ARK6\=  
int j=stack[top--]; %|j`z?i|  
int i=stack[top--]; y^Uh<L0M  
Kv0V`}<Yc  
pivotIndex=(i+j)/2; *IX<&u#  
pivot=data[pivotIndex]; DK)T2{:  
2Pow-o*r  
SortUtil.swap(data,pivotIndex,j); )G#mC0?PV  
/| q .q  
file://partition qYoB;gp  
l=i-1; ^G|* =~_  
r=j; vMd3#@  
do{ 4>A|2+K\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;3x*pjLG:Q  
SortUtil.swap(data,l,r); @<NuuYQ&  
} Xii>?sA5Z"  
while(l SortUtil.swap(data,l,r); y+3+iT@i  
SortUtil.swap(data,l,j); t:MSV?  
v5>A1\  
if((l-i)>THRESHOLD){ \?SvO  
stack[++top]=i; e,N}z  
stack[++top]=l-1; is }>+&_  
} WP2=1"X63  
if((j-l)>THRESHOLD){ G/*;h,NbNr  
stack[++top]=l+1; 8Cs;.>75[  
stack[++top]=j; .7]P-]uOZ  
} G %'xEr0n  
L!>nl4O>`  
} m _cRK}>  
file://new InsertSort().sort(data); 28k=@k^q  
insertSort(data); +F-EgF+J  
} b7XB l  
/** m9vX8;.  
* @param data eU\xOTl~<{  
*/  ^M{,{bG  
private void insertSort(int[] data) { JIhEkY  
int temp; y];-D>jk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z',Fa4@z  
} DQT'OZ :w  
} 5r`rstV  
} K+pVRDRcs  
 0:f]&Ng  
} Xu8I8nAwl  
f WZ(  
归并排序: u\V^g   
8[;vC$  
package org.rut.util.algorithm.support; ,DZvBS  
v\GVy[Qyv  
import org.rut.util.algorithm.SortUtil; H4s~=iB  
k,[*h-{8  
/** >))CXGE  
* @author treeroot t;BUZE_!0c  
* @since 2006-2-2 #l ZK_N|1x  
* @version 1.0 t%;w<1E  
*/ 2 /FQ;<L  
public class MergeSort implements SortUtil.Sort{ O&1qL)  
_bGkJ=  
/* (non-Javadoc) < Hkq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E7t;p)x  
*/ 7i*eKC`ZqK  
public void sort(int[] data) { ;h\T7pwwb  
int[] temp=new int[data.length]; ;xZjt4M1  
mergeSort(data,temp,0,data.length-1); HcgvlFb  
} =}vT>b  
"|h%Uy?XY  
private void mergeSort(int[] data,int[] temp,int l,int r){ - 8p!,+Dk  
int mid=(l+r)/2; nq)F$@  
if(l==r) return ; z@yTkH_  
mergeSort(data,temp,l,mid); G@.MP| 2  
mergeSort(data,temp,mid+1,r); x2rAB5r6  
for(int i=l;i<=r;i++){ #L~i|(=U5  
temp=data; &)Xc'RQ.C  
} IdQ./@?  
int i1=l; X/yq<_ g  
int i2=mid+1; p&h?p\IF  
for(int cur=l;cur<=r;cur++){ 1~*1W4};F8  
if(i1==mid+1) Zge(UhZ  
data[cur]=temp[i2++]; H+4j.eVzZU  
else if(i2>r)  .qgUD  
data[cur]=temp[i1++]; Zz0e4C  
else if(temp[i1] data[cur]=temp[i1++]; G18w3BFx  
else ]K"&Vd  
data[cur]=temp[i2++]; N% 4"9K  
} GC{M"q|_  
} V5 w1ET  
eXW|{asx  
} $@>0;i ::  
y3zP`^  
改进后的归并排序: Ix5&B6L8  
MKl0 d  
package org.rut.util.algorithm.support; TxX=(7V  
TaN{xpo  
import org.rut.util.algorithm.SortUtil; rZ~w_DK*  
_y@].G  
/** mHxR4%i5  
* @author treeroot :OG I|[  
* @since 2006-2-2 iQ;p59wSzL  
* @version 1.0 T#) )_aC  
*/ wY8:j  
public class ImprovedMergeSort implements SortUtil.Sort { {_QdB;VwH  
f8Iddm#  
private static final int THRESHOLD = 10; p+ CUYo(  
8R,<S-+v  
/* p49]{2GXb  
* (non-Javadoc) =V[uXm  
* ~SnUnNDm`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jsz!ro  
*/ xT%`"eM}  
public void sort(int[] data) { n t}7|h|  
int[] temp=new int[data.length]; p;O%W@n"  
mergeSort(data,temp,0,data.length-1); UFG_ZoD+  
} uu9M}]mDl  
V ~C$|+>e  
private void mergeSort(int[] data, int[] temp, int l, int r) { ffZ~r%25{  
int i, j, k; 5E&#Kh(I  
int mid = (l + r) / 2; tAdE<).!  
if (l == r) _)M,p@!?=h  
return; SIe!=F[  
if ((mid - l) >= THRESHOLD) |eqBCZn  
mergeSort(data, temp, l, mid); \D7bTn  
else : ?>7Z6  
insertSort(data, l, mid - l + 1); CD$#}Id  
if ((r - mid) > THRESHOLD) 'X^auyL  
mergeSort(data, temp, mid + 1, r); Y`;}w}EcgR  
else F5h/>  
insertSort(data, mid + 1, r - mid); -8Jw_  
rtV`Q[E  
for (i = l; i <= mid; i++) { KK){/I=z  
temp = data; Fx9-A8oIR  
} Q&} 0owe  
for (j = 1; j <= r - mid; j++) { O>~,RI!  
temp[r - j + 1] = data[j + mid]; <+`%=r)4  
} .%zcm  
int a = temp[l]; =V^-@ji)b  
int b = temp[r]; l8\UO<^fY  
for (i = l, j = r, k = l; k <= r; k++) { \|]mClj#  
if (a < b) { C=: <[_m`  
data[k] = temp[i++]; VdLoi\-/L  
a = temp; H@Dpht>[  
} else { "Ms;sdjg}&  
data[k] = temp[j--]; 0 j.K?]f)h  
b = temp[j]; E}@C4pS  
} " kDiK`i  
} J2YQdCL  
} %#HU~X:  
Hiyg1  
/** !"rPSGK*  
* @param data $></%S2g  
* @param l J:xGEa t  
* @param i oQ$yr^M  
*/ Lc3&\q e  
private void insertSort(int[] data, int start, int len) { v pI9TG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d#k(>+%=Q  
} !wAT`0<94F  
} j(;^XO Y#  
} iUx\3d,  
} }>A q<1%  
w5@ 5"M  
堆排序: $#Pxf  
8Zv``t61  
package org.rut.util.algorithm.support; o[|[xuTm  
IGlR,tw_/  
import org.rut.util.algorithm.SortUtil; k]b*&.EY1  
TdtV (  
/** swKkY`g  
* @author treeroot +v Bi7#&  
* @since 2006-2-2 g3R(,IH  
* @version 1.0 Syk)S<  
*/ \Wbmmd}8  
public class HeapSort implements SortUtil.Sort{ TT$A o  
ys[Li.s:  
/* (non-Javadoc) :^;c(>u{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R.~[$G!  
*/ odRiCiMH  
public void sort(int[] data) { 6Rc=!_v^  
MaxHeap h=new MaxHeap(); Knq 9 "k  
h.init(data); i?00!t  
for(int i=0;i h.remove(); / f%mYL  
System.arraycopy(h.queue,1,data,0,data.length); yI0bSu<j-  
} 55[ 4)*  
t@q'm.:uw<  
private static class MaxHeap{ +H)'(<  
Q8p6n  
void init(int[] data){ 7_0 p& 3  
this.queue=new int[data.length+1]; |)-kUu  
for(int i=0;i queue[++size]=data; j8Z,:op  
fixUp(size); U1RU2M]v  
} 91-bz^=xO  
} Up9{aX  
s#2t\}/  
private int size=0; %fS9F^AK  
7)66e  
private int[] queue; 0-2|(9 Kc  
b}e1JPk}!  
public int get() { jHLs 5%  
return queue[1]; R4?>C-;  
} $a(-r-_Fi]  
Zk3Pv0c  
public void remove() { eA!o#O.  
SortUtil.swap(queue,1,size--); D6 B-#u!M  
fixDown(1); @^{Hq6_`  
} 2 $>DX\h  
file://fixdown Z\&f"z?L  
private void fixDown(int k) { sD|l}f  
int j; h Yu6PWK  
while ((j = k << 1) <= size) { Z;0~f<e%  
if (j < size %26amp;%26amp; queue[j] j++; X{9^$/XsJ  
if (queue[k]>queue[j]) file://不用交换 q z)2a2C  
break; a#oROb-*~  
SortUtil.swap(queue,j,k); #&3,T1i`  
k = j; r pNb.  
} .`or^`X3  
} [ks_wvY:'  
private void fixUp(int k) { /y$Omc^  
while (k > 1) { hor7~u+  
int j = k >> 1; }Zhe%M=}G  
if (queue[j]>queue[k]) bIQ,=EA1  
break; N&9o  1_}  
SortUtil.swap(queue,j,k); 53Adic  
k = j; jhu &Wh  
} @s5=6z]=H  
} Fs+ tcr/\[  
6].[z+  
} BK$y>= `  
b@CB +8 $  
} b3(* /KgK  
C]^Ep  
SortUtil:  W!Tx%  
JsEJ6!1  
package org.rut.util.algorithm; Qg>NJ\*Q  
rd <m:r  
import org.rut.util.algorithm.support.BubbleSort; w5FIHYl6B  
import org.rut.util.algorithm.support.HeapSort; I-#H+\S  
import org.rut.util.algorithm.support.ImprovedMergeSort; %? ~'A59  
import org.rut.util.algorithm.support.ImprovedQuickSort; &@=Jm /5  
import org.rut.util.algorithm.support.InsertSort; }=R]<`Sj.j  
import org.rut.util.algorithm.support.MergeSort; \#sD`O  
import org.rut.util.algorithm.support.QuickSort; 05UN <l]  
import org.rut.util.algorithm.support.SelectionSort; F^!D[:;jK  
import org.rut.util.algorithm.support.ShellSort; 3m1g"  
JWVV?~1  
/** -D^I;[j_  
* @author treeroot  hfB$4s9  
* @since 2006-2-2 V&Y`?Edc  
* @version 1.0 _]:b@gXUw  
*/ _nGx[1G( 5  
public class SortUtil { qGk+4 yC  
public final static int INSERT = 1; R2bqhSlF  
public final static int BUBBLE = 2; bM W|:rn  
public final static int SELECTION = 3; F.s$Y+c!6  
public final static int SHELL = 4; 2.qPMqH  
public final static int QUICK = 5; H MOIUd  
public final static int IMPROVED_QUICK = 6; yOM/UdWq  
public final static int MERGE = 7; [8V;Q  
public final static int IMPROVED_MERGE = 8; ~ |G&cg  
public final static int HEAP = 9; lg%fjBY  
Vaxg   
public static void sort(int[] data) { 'nmGHorp  
sort(data, IMPROVED_QUICK); 4.A^5J'W  
} q^X7x_  
private static String[] name={ w,|@e_|J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ns[/M~_r  
}; 3:nhZN/95T  
0KA*6]h t  
private static Sort[] impl=new Sort[]{ SmXJQ@jN  
new InsertSort(), %h. zkocM  
new BubbleSort(), U~G7~L &m  
new SelectionSort(), "8za'@D"f  
new ShellSort(), q(sTKT[V  
new QuickSort(), i4D(8;  
new ImprovedQuickSort(), bpu`'Vx  
new MergeSort(), Iu'9yb  
new ImprovedMergeSort(), <,vIN,Kl8/  
new HeapSort() f-U zFlU  
}; Ku5||u.F4*  
X'A`" }=_  
public static String toString(int algorithm){ lg^'/8^f  
return name[algorithm-1]; r[9m-#)>  
} v>X!/if<y  
EEe$A?a;  
public static void sort(int[] data, int algorithm) { DYX{v`>f^  
impl[algorithm-1].sort(data); .ARYCTyG  
} F`=p/IAJK  
iSfRJ:_&6  
public static interface Sort { S!K<kn`E3  
public void sort(int[] data); U1\EwBK8*T  
} 3Tr,waV  
dJuyJl$*  
public static void swap(int[] data, int i, int j) { *tjaac;z<J  
int temp = data; c!w[)>v  
data = data[j]; '1u?-2  
data[j] = temp; i?L=8+9f  
} QE 4   
} /*C!]Z>.  
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