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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。 6Clxe Lk  
插入排序: [OBj2=  
*[jG^w0z8~  
package org.rut.util.algorithm.support; ]Ln2|$R  
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import org.rut.util.algorithm.SortUtil; WmTSxneo  
/** rD)yEuYX  
* @author treeroot Dk4Jg++  
* @since 2006-2-2 +HNY!fv9  
* @version 1.0 XYIZ^_My  
*/ [8AGW7_  
public class InsertSort implements SortUtil.Sort{ |i'V\" hW  
p_S8m|%  
/* (non-Javadoc) MVU5+wX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]5W0zNb*  
*/ AVyO5>w  
public void sort(int[] data) { v;" [1w}  
int temp; ~Emeo&X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3eQ-P8LS  
} Qrjo@_+w!  
} sh(G{Yz@  
} #?.Yc%5B  
yS0YWqv]6@  
} @O9.~6  
laN:H mR8  
冒泡排序: 7UvfXzDNC  
A\Rkt;:  
package org.rut.util.algorithm.support; mxsmW  
'F3Xb  
import org.rut.util.algorithm.SortUtil; r=6-kC!T9  
62K7afH  
/** TB 9{e!4  
* @author treeroot ,-^Grmr4M  
* @since 2006-2-2 O_aZ\28};C  
* @version 1.0 AFO g*{1  
*/ }z6@Z#%q  
public class BubbleSort implements SortUtil.Sort{ ;Ut0tm  
xWlj.Tjt}  
/* (non-Javadoc) "']I.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FI++A`  
*/ 7?<.L  
public void sort(int[] data) { BYuF$[3ya&  
int temp; `oP :F[B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?#"rI6  
if(data[j] SortUtil.swap(data,j,j-1); L A-H  
} T!e ]=  
} )$K )`uqb  
} =?>f[J5  
}  f.acH]p  
braHWC'VYg  
} aOHf#!/"sb  
f<WP< !N%  
选择排序: aP^,@RrL  
i:W.,w%8  
package org.rut.util.algorithm.support; [2I1W1pd  
5Z/xY &  
import org.rut.util.algorithm.SortUtil; 89T xd9X  
/tI8JXcUK  
/** O@r%G0Jge  
* @author treeroot UN#XP$utY  
* @since 2006-2-2 X@KF}x's  
* @version 1.0 wYy=Tl-N  
*/ xo2PxUO  
public class SelectionSort implements SortUtil.Sort { ;Ak<O[  
S~L$sqt  
/* b,"gBg  
* (non-Javadoc) {]1o($.u  
* Yl%1e|WV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mne4uW  
*/ - y[nMEE  
public void sort(int[] data) {  (c;F%m|  
int temp; cM%I5F+n  
for (int i = 0; i < data.length; i++) { *TQXE:vZ[  
int lowIndex = i; :N$^x /{  
for (int j = data.length - 1; j > i; j--) { Rd~-.&   
if (data[j] < data[lowIndex]) { 9/3gF)I}  
lowIndex = j; xtW Q.  
} &}:'YK*X  
} \'Oi0qo>  
SortUtil.swap(data,i,lowIndex); o))z8n?b  
} m  "'  
} d_s=5+Yj  
L+,p#w  
} %+gYZv-  
g&eIfm  
Shell排序: i]&C=X  
! J`>;&  
package org.rut.util.algorithm.support; )90Q  
3)\jUVuj  
import org.rut.util.algorithm.SortUtil; U;QTA8|!&  
dbM~41C6  
/** A+P9M \u.  
* @author treeroot \6o%gpUkD  
* @since 2006-2-2 ZDEz&{3U;  
* @version 1.0 =@(&xfTC  
*/ J%ng8v5ex  
public class ShellSort implements SortUtil.Sort{ 4po zTe  
n{sF'n</  
/* (non-Javadoc) {FRUB(68b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,aOi:aaZRT  
*/ ^o&3+s} M  
public void sort(int[] data) { G J"S*30  
for(int i=data.length/2;i>2;i/=2){ q6DuLFatc*  
for(int j=0;j insertSort(data,j,i); dsck:e5agZ  
} V4I5PPz~  
} 02B *cz_K  
insertSort(data,0,1); 50r3Kl0  
} vN#?>aL  
0#1hkJ"  
/** 'J\nvNm  
* @param data Fy:CG6@X  
* @param j |a9d]^  
* @param i mQEE?/xX;  
*/ /)RyRS8c  
private void insertSort(int[] data, int start, int inc) { EB R,j_  
int temp; SFhi]48&V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 32h}+fd  
} zq]I"0Bi.  
} 4<%(Y-_sF  
} [Q"*I2&  
t &scvXh  
} ~,#zdm1r@  
2J?ON|2M  
快速排序: BK>3rjXi>a  
bY` b3  
package org.rut.util.algorithm.support; `)5,!QPQ7u  
Cj{+DXT  
import org.rut.util.algorithm.SortUtil; VpmwN`  
x=-dv8N?  
/** FPAy.cljJ  
* @author treeroot W5 l)mAv  
* @since 2006-2-2 HC1jN8WDY  
* @version 1.0 J)R2O{z  
*/ nsf.wHGZ"J  
public class QuickSort implements SortUtil.Sort{ O*qSc^9q  
>~%!#,C(|U  
/* (non-Javadoc) W`^euBr7R>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X8(H#Ef[  
*/ ".0~@W0  
public void sort(int[] data) { m .:2G  
quickSort(data,0,data.length-1); SNLZU%jan  
} :vsBobiJ  
private void quickSort(int[] data,int i,int j){ |[6jf!F  
int pivotIndex=(i+j)/2; lI,lR  
file://swap p~v rr 5  
SortUtil.swap(data,pivotIndex,j); FE'|wf  
8]G  
int k=partition(data,i-1,j,data[j]); 4k$i:st;  
SortUtil.swap(data,k,j); |ZJ<J)y  
if((k-i)>1) quickSort(data,i,k-1); tccw0  
if((j-k)>1) quickSort(data,k+1,j); aL)}S%5o?  
;JpsRf!  
} %#AM }MWIa  
/** `Zdeq.R]  
* @param data G`;YB  
* @param i  !' }  
* @param j blVt:XS{,m  
* @return  AqqD!  
*/ S*aMUV&  
private int partition(int[] data, int l, int r,int pivot) { T O]wD^`  
do{ 0\B31=N(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /JcfAY  
SortUtil.swap(data,l,r); [ClDKswq  
} K3Sa6"U  
while(l SortUtil.swap(data,l,r); rT#2'-f  
return l; wI0NotC  
} *A^`[_y  
1QA{NAnu&  
} 5%6{ ePh{  
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改进后的快速排序: *UerLpf  
Wx8oTN  
package org.rut.util.algorithm.support; ~[N"Q|D3Y  
mJ #|~I*Z-  
import org.rut.util.algorithm.SortUtil; -J6G=+ s/  
Xn%ty@8  
/** |_h$}~ ;  
* @author treeroot hf`5NcnP  
* @since 2006-2-2 yIq. m=  
* @version 1.0 #/,WgsAC  
*/ IG(1h+5 R(  
public class ImprovedQuickSort implements SortUtil.Sort { ,N1I\f  
W5SCm(QS5  
private static int MAX_STACK_SIZE=4096; K*/X{3J;  
private static int THRESHOLD=10; c/'Cju W  
/* (non-Javadoc) Iq?#kV9)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qlU"v)Mx  
*/ /19ZyQw9  
public void sort(int[] data) { ]?<=DHn  
int[] stack=new int[MAX_STACK_SIZE]; 6Trtulm  
!H^e$BA  
int top=-1; T?4I\SG  
int pivot; LkwjEJQf  
int pivotIndex,l,r; sX c|++  
h>:eu#  
stack[++top]=0; 3UNmUDl[~  
stack[++top]=data.length-1; c$fYK  
lP;X=X>  
while(top>0){ =>m x>R`S  
int j=stack[top--]; ~Qm<w3oy  
int i=stack[top--]; 'V`Hp$r  
e h6\y7 9g  
pivotIndex=(i+j)/2; v1`*}.#  
pivot=data[pivotIndex]; + t JEG:  
/@O$jlX5I  
SortUtil.swap(data,pivotIndex,j); -tH^Deo  
GF/!@N  
file://partition i.5?b/l0  
l=i-1; 8q/3}AnI  
r=j; 5*hA6Ex7  
do{ (/[wM>q:r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A dL>?SG%  
SortUtil.swap(data,l,r); 4Q?3gA1  
} ?.~hex#M@  
while(l SortUtil.swap(data,l,r); = lMs1}S9  
SortUtil.swap(data,l,j); T*"*##c  
LcW:vV|'K  
if((l-i)>THRESHOLD){ 7Ap==J{a  
stack[++top]=i; xV\mS+#  
stack[++top]=l-1; 50R&;+b  
} O?OG`{k  
if((j-l)>THRESHOLD){ U?e.)G  
stack[++top]=l+1; $v\o14 v  
stack[++top]=j; sKniqWi  
} x@Ze%$'  
'\wZKY VN  
} hhr!FQ.+/  
file://new InsertSort().sort(data); 2JR$  
insertSort(data); nl/~7({  
} n:P++^ j  
/** Ap)pOD7  
* @param data =}1m.  
*/ OaF[t*]D3  
private void insertSort(int[] data) { s;Sv@=\  
int temp; EHlkt,h*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W&s@2y?rF  
} wqE+hKs,  
} _!C M  
} (> VD#n  
P>wTp)  
} 6483v'  
@3Nvf}He  
归并排序: O <#H5/Tq  
8h$f6JE  
package org.rut.util.algorithm.support; 7blo<|9  
4iC=+YUn  
import org.rut.util.algorithm.SortUtil; d3&l!DoX  
kNC]q,ljt5  
/** aQ#6PO7.Z  
* @author treeroot {Q/_I@m].  
* @since 2006-2-2 EF5:$#  
* @version 1.0 4<<T#oW.:G  
*/ ;vp[J&=  
public class MergeSort implements SortUtil.Sort{ q'CtfmI`r=  
yr[HuwU  
/* (non-Javadoc) jA,| .P>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Q.|qyq  
*/ )mh,F# "L  
public void sort(int[] data) { ?Vo/mtbY5X  
int[] temp=new int[data.length]; ]S0sjN  
mergeSort(data,temp,0,data.length-1); 3v,Bg4[i  
} ?L(y8b}F(  
T(q/$p&q  
private void mergeSort(int[] data,int[] temp,int l,int r){ Xd@_:ds  
int mid=(l+r)/2; " LkI'>3}  
if(l==r) return ; *$*V#,V-  
mergeSort(data,temp,l,mid); b3^d!#KVM  
mergeSort(data,temp,mid+1,r); )D8V;g(7F  
for(int i=l;i<=r;i++){ "3e1 7dsY  
temp=data; 2&KM&NX~  
} 2E_d$nsJ  
int i1=l; ~`!{5:v  
int i2=mid+1; F&)(G\  
for(int cur=l;cur<=r;cur++){ ~7O.}RP0  
if(i1==mid+1) g"|/^G_6S  
data[cur]=temp[i2++]; N}X7g0>hV  
else if(i2>r) %WO4uOi:@  
data[cur]=temp[i1++]; #4wia%}u  
else if(temp[i1] data[cur]=temp[i1++]; ]]!&>tOlI  
else 5o2vj8::  
data[cur]=temp[i2++]; y%@C-:  
} ;pVnBi  
} p)YI8nW  
?7cT$/4  
} |0s)aV|K  
XFJz\'{  
改进后的归并排序: [l:}#5\]4  
n"|1A..^  
package org.rut.util.algorithm.support; vfpK|=[7o  
tJ9-8ZT*  
import org.rut.util.algorithm.SortUtil; x>eV$UJ  
bTJ l  
/** =DLVWz/<  
* @author treeroot  c FV3  
* @since 2006-2-2 ' "I-! +  
* @version 1.0 7CV}QV}G  
*/ S0jYk (  
public class ImprovedMergeSort implements SortUtil.Sort { 0;n}{26a  
p{W'[A{J .  
private static final int THRESHOLD = 10; g$9EI\a  
%Z!3[.%F  
/* Rw]lW;EN<  
* (non-Javadoc) A#x_>fV  
* 6< @F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MwO`DrV  
*/ ~X<Ie9m1x  
public void sort(int[] data) { Cs?[   
int[] temp=new int[data.length]; ~pG,|\9  
mergeSort(data,temp,0,data.length-1); o@@, }  
} #J|DW C!#d  
!rPU5y*  
private void mergeSort(int[] data, int[] temp, int l, int r) { {"n=t`E)3  
int i, j, k; `R@b`3*%v  
int mid = (l + r) / 2; aZB$%#'vR  
if (l == r) o@ W:PmKW  
return; T.GB *  
if ((mid - l) >= THRESHOLD) AH'4k(-  
mergeSort(data, temp, l, mid); fUa[3)I  
else 4elA<<  
insertSort(data, l, mid - l + 1); Jx3fS2  
if ((r - mid) > THRESHOLD) ! w2BD^V-  
mergeSort(data, temp, mid + 1, r); MVXy)9q  
else v|@1W Uc,g  
insertSort(data, mid + 1, r - mid); }&Kl)2:O  
)9s 6(Iu  
for (i = l; i <= mid; i++) { .u\xA7X  
temp = data; PCZ%<>v  
} i2 7KuPjC  
for (j = 1; j <= r - mid; j++) { P^J#;{R  
temp[r - j + 1] = data[j + mid]; D+('1E?  
} c!Wj^  
int a = temp[l]; rLx'.:  
int b = temp[r]; KGNBzy~9  
for (i = l, j = r, k = l; k <= r; k++) { T%[!m5   
if (a < b) { Z<W`5sop^  
data[k] = temp[i++]; o*Kl`3=]  
a = temp; .XPPd?R  
} else { WR5W0!'Tf  
data[k] = temp[j--]; }/g1s71  
b = temp[j]; y vo4 .u  
} ~?<VT k  
} WeE1 \  
} 141XnAb)I  
M.0N`NmS  
/** SPo}!&p$~  
* @param data P2=u-{?~  
* @param l ew 4pAav  
* @param i <0!)}O  
*/ cC7&]2X +f  
private void insertSort(int[] data, int start, int len) { w i=&W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I W5N^J  
} d6+{^v$#  
} 5~\GAjf  
} %W,V~kb  
} {bMOT*X=A  
:,1 kSM%r  
堆排序: ^zVW 3 Y q  
#xfPobQ>il  
package org.rut.util.algorithm.support; &l _NCo2  
dA=T+u  
import org.rut.util.algorithm.SortUtil; t:yJ~En]=  
tq&CJvJ4  
/** A_}6J,*u  
* @author treeroot 0S$6j-"  
* @since 2006-2-2 {<L|Z=&k`  
* @version 1.0 '/ *;g#W=  
*/ -,^Z5N#\|  
public class HeapSort implements SortUtil.Sort{ $@@@</VbP  
-cL wjI  
/* (non-Javadoc) L2{b~`UvP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <g'0q*qE  
*/ x{I, gu|+  
public void sort(int[] data) { ZZJ<JdD  
MaxHeap h=new MaxHeap(); .kZ<Q]Vk  
h.init(data); -PLh|  
for(int i=0;i h.remove(); I6RF;m:Jw  
System.arraycopy(h.queue,1,data,0,data.length); tde&w=ec  
} F%`O$uXA  
TDZ p1zpXb  
private static class MaxHeap{ KAR **Mp+  
#s3R4@{  
void init(int[] data){ JYO("f  
this.queue=new int[data.length+1]; :BpXi|n;  
for(int i=0;i queue[++size]=data; }E&48$0h  
fixUp(size); FN"Ye*d  
} #Z1 <lAy  
} *rv7#!].  
MoMxKmI  
private int size=0; *(CV OY~  
$[{YE[a  
private int[] queue; 7Kn}KO!Y8  
4'GosQ85  
public int get() { W'L  
return queue[1]; I/Q~rVt  
} xa$4P [  
B)=)@h[f  
public void remove() { + 3c (CTz  
SortUtil.swap(queue,1,size--); `C>De4nT@  
fixDown(1); ]y~"M  
} H.#zbKj  
file://fixdown +!eh\.u|]  
private void fixDown(int k) { ;kR+jC(  
int j; pz,iQUs _o  
while ((j = k << 1) <= size) { ?C*}NM  
if (j < size %26amp;%26amp; queue[j] j++;  wjfc9z  
if (queue[k]>queue[j]) file://不用交换 VX]Ud\(  
break; -E>LB\[t)  
SortUtil.swap(queue,j,k); _<6B.{$\7m  
k = j; `=19iAp.  
} zr^"zcfz&  
} <P0&!yN  
private void fixUp(int k) { ?eOw8Rom  
while (k > 1) { Fb<fQIa  
int j = k >> 1; 6h{>U*N"&d  
if (queue[j]>queue[k]) [,Fu2j]  
break; Ob@HzXH  
SortUtil.swap(queue,j,k); buA/G-<e  
k = j; IyoitIbLl  
} u -A_l<K  
} wrAcVR  
bD<hzOa  
} H-jxH,mJmW  
K?eY<L  
} JGQ)/(  
,)Z1&J?  
SortUtil: *Z2#U ?_  
+XpQ9Cd  
package org.rut.util.algorithm; \vF*n Z5/  
aqKrf(Rv  
import org.rut.util.algorithm.support.BubbleSort; rHJtNN8$k  
import org.rut.util.algorithm.support.HeapSort; (Z?g^kjq)  
import org.rut.util.algorithm.support.ImprovedMergeSort; Dgm"1+  
import org.rut.util.algorithm.support.ImprovedQuickSort; (gjCm0#_%  
import org.rut.util.algorithm.support.InsertSort; b0uWUI(=  
import org.rut.util.algorithm.support.MergeSort; uy8mhB+]  
import org.rut.util.algorithm.support.QuickSort; !m6=Us  
import org.rut.util.algorithm.support.SelectionSort; s(cC ;  
import org.rut.util.algorithm.support.ShellSort; W ![*0pL  
?$~5ti#\  
/** Q&8epO|J  
* @author treeroot ; ~#uH7k  
* @since 2006-2-2 k`NXYf:  
* @version 1.0 :[?65q{  
*/ |C}=  1  
public class SortUtil { 8RjFp2) W  
public final static int INSERT = 1; b/obHB+:  
public final static int BUBBLE = 2; Tno 0Q +  
public final static int SELECTION = 3; B~47mw&b  
public final static int SHELL = 4; A+ LX37B  
public final static int QUICK = 5; MTAq} 8  
public final static int IMPROVED_QUICK = 6; DTz)qHd#X  
public final static int MERGE = 7; i^}ib RQbN  
public final static int IMPROVED_MERGE = 8; "Zu>cbE  
public final static int HEAP = 9; Hgbrlh  
9@wmngvM*Y  
public static void sort(int[] data) { {;+9A}e  
sort(data, IMPROVED_QUICK); /dwj:g0y  
} H&uh$y@  
private static String[] name={ f J+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (x140_TH~  
}; SY$%)(c8kL  
%OJq(}  
private static Sort[] impl=new Sort[]{ MQq!<?/  
new InsertSort(), 2 sK\.yS  
new BubbleSort(), <8BNqbX  
new SelectionSort(), lt& c/xi_  
new ShellSort(), `2,F!kCt  
new QuickSort(), ,L-G-V+  
new ImprovedQuickSort(), \T {<{<n  
new MergeSort(), ca,U>'(y  
new ImprovedMergeSort(), +l;AL5h  
new HeapSort() b] ~  
}; KEo?Cy?%ff  
<uvA([r=Vq  
public static String toString(int algorithm){ mOntc6&]  
return name[algorithm-1]; Lrq e:\  
} RKb (  
XvIY=~  
public static void sort(int[] data, int algorithm) { <`d;>r=4z  
impl[algorithm-1].sort(data); ?JMy  
} FQM9>l@6)>  
jf=\\*64r4  
public static interface Sort { E(Zm6~  
public void sort(int[] data); zXML<?w  
} Ir6g"kwCKq  
8K2=WYN  
public static void swap(int[] data, int i, int j) { ? u~?:a@K  
int temp = data; @P/6NMjZ^  
data = data[j]; FY"csZ  
data[j] = temp; 3 uJ?;  
} 6"/4@?  
} 4ZtsLMwLD  
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