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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。 ^#%[  
插入排序: [@(zGb8  
WZ ZD  
package org.rut.util.algorithm.support; phTZUm i  
Yq.Omr!  
import org.rut.util.algorithm.SortUtil; t+pI<c^]y  
/** }=++Lr4*  
* @author treeroot JprZ6 >  
* @since 2006-2-2 E~24b0<7  
* @version 1.0 {It4=I)M  
*/ aJ2-BRn  
public class InsertSort implements SortUtil.Sort{ ks! G \<I  
3Z`oI#-x  
/* (non-Javadoc) w>#~_x, `  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Owq_)_ (|  
*/ 5dhRuc  
public void sort(int[] data) { b2z~C{l  
int temp; :Y"f .>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p%n}a%%I  
} Ly3^zF W  
} J,k{Bm  
} 6$IAm#  
Y40{v(Pi  
} e-Eoe_k  
[z?q -$#  
冒泡排序: XI pXP,Yy  
f9!wO';P6  
package org.rut.util.algorithm.support; z}Xn>-N-  
{BgGG@e  
import org.rut.util.algorithm.SortUtil; &a O3N  
J)66\h=  
/** 7Rq;V=2YV  
* @author treeroot ;]|Z8#s  
* @since 2006-2-2 8K{ TRPy  
* @version 1.0 WJ=^r@Sf  
*/ @HR]b^2E  
public class BubbleSort implements SortUtil.Sort{ r..\(r  
JVU:`BH  
/* (non-Javadoc) m39 `f,M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U$qSMkj6RK  
*/ 3:!+B=woR  
public void sort(int[] data) { qbmy~\ZY  
int temp; fk9FR^u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5PG%)xff*  
if(data[j] SortUtil.swap(data,j,j-1); @2]_jW  
} #R@{Bu=C  
} ?-Fp rC  
} G=(F-U;*  
} +:;r} 7Zh  
!|hv49!H  
} eQNo'cz  
RD<l<+C^~  
选择排序: o`7Bvh2  
j $a,93P5  
package org.rut.util.algorithm.support; g*TAaUs|n  
-ZBk^p  
import org.rut.util.algorithm.SortUtil; g!i\ AMG?  
O:WFh;c  
/** Ag^Cb'3X  
* @author treeroot /X {:~*.z  
* @since 2006-2-2 $xJVUV  
* @version 1.0 ~Qeyh^wo  
*/ 1@im+R?a  
public class SelectionSort implements SortUtil.Sort { XTyJ*`>  
wz<YflF  
/* weYP^>gH'  
* (non-Javadoc) $d'GCzYvZ  
* ;"Q{dOvp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) );'8*e'  
*/ -=I*{dzly  
public void sort(int[] data) { y4^6I$M7V  
int temp; M S)(\&N  
for (int i = 0; i < data.length; i++) { [RTB|0Q  
int lowIndex = i; 4Bsx[~ u&  
for (int j = data.length - 1; j > i; j--) { J.N%=-8  
if (data[j] < data[lowIndex]) { =Wn11JGh  
lowIndex = j; % V/J6  
} T1.`*,t)=  
} :)_Ap{9J  
SortUtil.swap(data,i,lowIndex); ?KDI'>"-v  
} OB FG!.)  
} QK)"-y}"g  
Pfj{TT.#L  
} sg RY`U.C  
L}7c{6!F7  
Shell排序: #8H  
bX23F?  
package org.rut.util.algorithm.support; { AdPC?R`  
t>:2F,0K9  
import org.rut.util.algorithm.SortUtil; HdQd =q(  
 Gqvj  
/** R/&Bze  
* @author treeroot R] L|&{   
* @since 2006-2-2 F?TxViL  
* @version 1.0 G'T/I\tB  
*/ ?]+{2&&$  
public class ShellSort implements SortUtil.Sort{ *J&XM[t  
zcnp?%  
/* (non-Javadoc) a/Z >-   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >jMq-#*4  
*/ U`Bw2Vdk]S  
public void sort(int[] data) { "$#X[ .  
for(int i=data.length/2;i>2;i/=2){ m08:EX P  
for(int j=0;j insertSort(data,j,i); d#6'dKV$  
} gI a/sD2m>  
} ]NgK(I U  
insertSort(data,0,1); jp?;8rS3  
} mv_N ns  
uSh!A  
/** DA;,)A&=Q  
* @param data .4P5tIn\  
* @param j 6 B>1"h%Wf  
* @param i BBnW0vAZ*  
*/ 4Rj;lAlwB  
private void insertSort(int[] data, int start, int inc) { *;b.x"  
int temp; m!{Xuy  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r:Uqtqxh  
} #'m&<g,  
} 3{OY&   
} <,/k"Y=  
6M^P]l  
} rS1mBrqD  
;{'{*g[  
快速排序: mRVE@ pc2X  
p4mlS  
package org.rut.util.algorithm.support; ]XX9.Xh=-  
n/*BK;  
import org.rut.util.algorithm.SortUtil; F|.,lb |L  
IRy!8A=X  
/** Z +%Uwj  
* @author treeroot " o.V`Bj  
* @since 2006-2-2 IO/%X;Y_  
* @version 1.0 zGKDH=Yy ;  
*/ 'wh2787  
public class QuickSort implements SortUtil.Sort{ l-|hvv5g  
%J)n#\  
/* (non-Javadoc) S-)mv'Al'F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MLD-uI10{  
*/ * ]uo/g  
public void sort(int[] data) { v4_p3&aj  
quickSort(data,0,data.length-1); Y4E UW%  
} %{GYTc \'X  
private void quickSort(int[] data,int i,int j){ 0sxZa+G0o  
int pivotIndex=(i+j)/2; d V+%x"[:  
file://swap !YUMAp/  
SortUtil.swap(data,pivotIndex,j); YbS$D  
^H]q[XFR  
int k=partition(data,i-1,j,data[j]); N^i<A2'6S;  
SortUtil.swap(data,k,j); ;uw`6 KJ  
if((k-i)>1) quickSort(data,i,k-1); GS),rNBur  
if((j-k)>1) quickSort(data,k+1,j); iCA!=%M@D  
WSA;p=_  
} FFE IsB"9  
/** :=J~t@  
* @param data h4@v. GI  
* @param i ,P G d  
* @param j 3@u<Sa  
* @return $|0_[~0-n  
*/ R7'a/  
private int partition(int[] data, int l, int r,int pivot) { {\tHS+]  
do{ \;"$Z 9W  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :4o08M%  
SortUtil.swap(data,l,r); UdBP2lGd  
} <sXmk{  
while(l SortUtil.swap(data,l,r); S@Rw+#QE  
return l; $i# 1<Qj  
} 8 1Ar.<  
:]?y,e%xu,  
} ( e> .hfrs  
wSrq?U5q  
改进后的快速排序: S<RJ46  
:Ja]Vt  
package org.rut.util.algorithm.support; gO C5  
,,*i!%Adw  
import org.rut.util.algorithm.SortUtil; ,`<w#  
1UR ;}  
/** Ave{ `YD  
* @author treeroot +qz"+g  
* @since 2006-2-2 BIx Z4Ft  
* @version 1.0 VUfV=&D-*g  
*/ ujF*'*@\  
public class ImprovedQuickSort implements SortUtil.Sort { EH;w <LvT  
tx-HY<  
private static int MAX_STACK_SIZE=4096; GyE-fB4C  
private static int THRESHOLD=10; o)NQE?  
/* (non-Javadoc) ] i;xeo,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L\@SX?j  
*/ P#`Mg@.  
public void sort(int[] data) { rh;@|/<l  
int[] stack=new int[MAX_STACK_SIZE]; ,TuDG*YA  
W/dl`UDY  
int top=-1; *G{%]\s?  
int pivot; 'BE &lW  
int pivotIndex,l,r; 5w:   
@=KuoIV  
stack[++top]=0; !P*1^8b`f  
stack[++top]=data.length-1; 3?Ckk{)&  
n-q  
while(top>0){ d ]LF5*i  
int j=stack[top--]; @^Tof5?F?  
int i=stack[top--]; "tu BfA+f  
AF5$U8jf  
pivotIndex=(i+j)/2; Yh%a7K   
pivot=data[pivotIndex]; oObm5e*Z  
/rsr|`#  
SortUtil.swap(data,pivotIndex,j); E}U[VtaC  
&m=Xg(G~c  
file://partition aL\vQ(1zO  
l=i-1; m>4jRr6sF  
r=j; (;1FhIi&  
do{ >h3r\r\n3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a`.] 8Jy)  
SortUtil.swap(data,l,r); ~RSOUrR  
} E{^*^+c"h  
while(l SortUtil.swap(data,l,r); }DxXt  
SortUtil.swap(data,l,j); " ^ydoRZ  
2al%J%  
if((l-i)>THRESHOLD){ *GbC`X)  
stack[++top]=i; g)!B};AA  
stack[++top]=l-1; PH9MB  
} qw&Wfk\}  
if((j-l)>THRESHOLD){ %'"#X?jk1  
stack[++top]=l+1; C16MzrB}(N  
stack[++top]=j; I7 pxi$8f  
} T.<er iv  
@y;N u   
} _2q4Aaza  
file://new InsertSort().sort(data); <_uLf9j a  
insertSort(data); t]P[>{y  
} Pr{?A]dQ  
/** @j`_)Y\  
* @param data jRm:9`.Q  
*/ %Xh/16X${  
private void insertSort(int[] data) { yrnB]$hf  
int temp; Z_}vjk~s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8*6vX!Z|  
} Zd1+ZH  
} $/}*HWVZ  
} P.gk'\<k  
? 1?^>M  
} J<p<5):R;  
eQx9 Vnb  
归并排序: [N$da=`wv  
V=VL@=  
package org.rut.util.algorithm.support; [Oxmg?W  
mAhtC*  
import org.rut.util.algorithm.SortUtil; 3uwu}aw  
K%Mm'$fTw  
/** MxuwEV|^  
* @author treeroot xH; qJRHa  
* @since 2006-2-2 R@5jEf  
* @version 1.0 : &mYz(1q  
*/ j?i Ur2  
public class MergeSort implements SortUtil.Sort{ Kf76./  
W'E!5T^  
/* (non-Javadoc) (?J6vK}S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j2cLb  
*/ /,"Z^=  
public void sort(int[] data) { TYw0#ZXo  
int[] temp=new int[data.length]; YPDc /  
mergeSort(data,temp,0,data.length-1); }9R45h}{<  
} #] vq <Y  
d@b0z$<s  
private void mergeSort(int[] data,int[] temp,int l,int r){ q]0a8[]3  
int mid=(l+r)/2; COOazXtW  
if(l==r) return ; g (33h2"  
mergeSort(data,temp,l,mid); V`TXn[7  
mergeSort(data,temp,mid+1,r); GD}3 r:wDs  
for(int i=l;i<=r;i++){ vz) A~"E  
temp=data; n>Y3hY  
} z:^Kr"=n  
int i1=l; &O#a==F!(  
int i2=mid+1; K?BWl:^x  
for(int cur=l;cur<=r;cur++){ V,<,;d fR  
if(i1==mid+1) }H?8~S =  
data[cur]=temp[i2++]; =w?-R\  
else if(i2>r) k)'hNk"x  
data[cur]=temp[i1++]; Ig'Y]%Z0  
else if(temp[i1] data[cur]=temp[i1++]; iVd*62$@$  
else ?|%^'(U}  
data[cur]=temp[i2++]; 82~UI'f \  
} N;F1Z-9  
} <.HHV91  
j$Vv'on  
} \_!FOUPz(  
K-)*S\<}  
改进后的归并排序: +N5G4t#.  
YdV5\!  
package org.rut.util.algorithm.support; r4gkSwy  
$9y]>R  
import org.rut.util.algorithm.SortUtil; DHbLS3-  
@?aNvWeavH  
/** en=Z[ZIPO  
* @author treeroot "]LNw=S  
* @since 2006-2-2 ba% [!  
* @version 1.0 V{HZ/p_Y  
*/ ~1S7\e7{  
public class ImprovedMergeSort implements SortUtil.Sort { ?p. dc ~tZ  
3SpDV'}  
private static final int THRESHOLD = 10; $sU?VA'h  
O!d^v9hM,  
/* ]b'K BAMy  
* (non-Javadoc) 'M_8U0k  
* $P^=QN5 Bb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 69cOdIt^D  
*/ Y5-X)f  
public void sort(int[] data) { 1|;WaO1Q  
int[] temp=new int[data.length]; K>RL  
mergeSort(data,temp,0,data.length-1); 6aM`qz)  
} z Rz#0  
XC?H  
private void mergeSort(int[] data, int[] temp, int l, int r) { %saTyF,  
int i, j, k; `vDg~o  
int mid = (l + r) / 2; ,T|iA/c  
if (l == r) ;1NZY.pyc  
return; }C/}8<  
if ((mid - l) >= THRESHOLD) , $}P<WZMu  
mergeSort(data, temp, l, mid); oMLpl3pl  
else csRba;Z[  
insertSort(data, l, mid - l + 1); SQvicZAN)`  
if ((r - mid) > THRESHOLD) 5irewh'R  
mergeSort(data, temp, mid + 1, r); To}L%)  
else j+_g37$:  
insertSort(data, mid + 1, r - mid); I4m)5G?O2  
] X%bU*4  
for (i = l; i <= mid; i++) { ;y=w :r\A  
temp = data; Y91TF'  
} VY=~cVkzS  
for (j = 1; j <= r - mid; j++) { E4}MvV=  
temp[r - j + 1] = data[j + mid]; xdYjl.f  
} /W:}p(>4a  
int a = temp[l]; x[WT)  
int b = temp[r]; L nw+o}  
for (i = l, j = r, k = l; k <= r; k++) { Z'S>i*Ts  
if (a < b) { - CM;sXq  
data[k] = temp[i++]; }9Y='+.%^  
a = temp; z]Ql/AK  
} else { dMRwQejY{7  
data[k] = temp[j--]; GZI[qKDfB  
b = temp[j]; i;6\tK"!  
} fkRb;aIl  
} t,k9:p  
} q?} G?n 4  
Rv.W~FE^  
/** MAJvjgd ..  
* @param data '? yZ,t  
* @param l jG)>{D  
* @param i G<Lm}  
*/ "q#(}1Zd  
private void insertSort(int[] data, int start, int len) { t:m t9}$d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cTRCQ+W6:  
} KO{}+~,.6  
} w\$b(HC  
} hzKfYJcQ|  
} QfcW  
g](m& O  
堆排序: QXXcJc~  
7yQ r  
package org.rut.util.algorithm.support; y)s/\l&  
Ls|;gewp  
import org.rut.util.algorithm.SortUtil; Xk7zXah  
Aqp3amW!  
/** xl# j_d,  
* @author treeroot ) }?dYk  
* @since 2006-2-2 >!bYuVHA  
* @version 1.0 uVp R^  
*/ f3v/Y5)  
public class HeapSort implements SortUtil.Sort{ UAcABL^2  
ceZt%3=5  
/* (non-Javadoc) Dt r'X@U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SxOM@A  
*/ }jIb ^|#CD  
public void sort(int[] data) { RKj A`cJ  
MaxHeap h=new MaxHeap(); |/p ^e  
h.init(data); !knYD}Rxd  
for(int i=0;i h.remove(); Q{$2D&  
System.arraycopy(h.queue,1,data,0,data.length); J+.t \R  
} sM?DNE^BvW  
m m`:ci  
private static class MaxHeap{ ipU"|{NK  
%mI`mpf  
void init(int[] data){ g|nPr)<  
this.queue=new int[data.length+1]; :;7qup  
for(int i=0;i queue[++size]=data; & JF^a  
fixUp(size); ):.]4n{L  
} 34P? nW(  
} ?cpID8Z  
ryPz?Aw(4  
private int size=0; cFH,fj  
Z/_RQ q   
private int[] queue; re^1fv  
Ex<-<tY  
public int get() { lI&0 V5  
return queue[1]; xvrCm`3n@  
} 5gEUE{S  
u}ab[$Q5  
public void remove() { -M/ny-; `}  
SortUtil.swap(queue,1,size--); Y@L`XNl  
fixDown(1); xpSMbX{e  
} cFuvi^n\  
file://fixdown Hi|Oeu  
private void fixDown(int k) { Z7%>O:@z  
int j; Y> 7/>x6  
while ((j = k << 1) <= size) { f+F /`P%  
if (j < size %26amp;%26amp; queue[j] j++; yfaXScbE  
if (queue[k]>queue[j]) file://不用交换 KU$.m3A>  
break; O(!wDnhc  
SortUtil.swap(queue,j,k); YZmD:P  
k = j; 3RGVH,  
} ))k^7g9M`  
} 4} =]QQoE  
private void fixUp(int k) { kOkgsQQ  
while (k > 1) { 1Z*-@%RX  
int j = k >> 1; B8C"i%8V)  
if (queue[j]>queue[k]) `cf&4Hn  
break; *S<>_R 8  
SortUtil.swap(queue,j,k); am@\$Sa4  
k = j; l tQ:c  
} 9C`Fd S   
} w3B*%x)  
'n.ATV,  
} F"9q Bl~  
YSeXCJ:Iy  
} ~KrzJp=5F  
KcY 2lTvx  
SortUtil: 4Tq%V|5"&  
r@iGM Jx$  
package org.rut.util.algorithm; {?#g*QF|^  
9jJ&QACn  
import org.rut.util.algorithm.support.BubbleSort; JYKaF6bx8  
import org.rut.util.algorithm.support.HeapSort; } CQ GvH  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2j( w*k q~  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0M:.Jhp  
import org.rut.util.algorithm.support.InsertSort; _DH,$evS%  
import org.rut.util.algorithm.support.MergeSort; *I>1O*  
import org.rut.util.algorithm.support.QuickSort; t;ggc{  
import org.rut.util.algorithm.support.SelectionSort; `MEH/  
import org.rut.util.algorithm.support.ShellSort; 1p`XK";g  
']4sx_)S  
/** Xc`'i@FX  
* @author treeroot ,AACE7%l  
* @since 2006-2-2 }vp\lK P  
* @version 1.0 Qm ;ip E  
*/ m#DC;(Pn  
public class SortUtil { ?hsOhUs(5  
public final static int INSERT = 1; UB(Q &U_  
public final static int BUBBLE = 2; -/KVZ  
public final static int SELECTION = 3; }1Q]C"hY  
public final static int SHELL = 4; fWF\ V[  
public final static int QUICK = 5; 4,T S1H  
public final static int IMPROVED_QUICK = 6; *H:;pI WP  
public final static int MERGE = 7; l}Jf;C*j1z  
public final static int IMPROVED_MERGE = 8; E^Q|v45d  
public final static int HEAP = 9; >qCUs3}C{*  
Exk[;lI  
public static void sort(int[] data) { )2u=U9  
sort(data, IMPROVED_QUICK); c7P"1  
} [ @&  
private static String[] name={ !</5 )B`5:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VA.:'yQtJ  
}; :] {+ 3A  
?$ o9/9w  
private static Sort[] impl=new Sort[]{ !:a pu!  
new InsertSort(), xH e<TwkI  
new BubbleSort(), (&+ ~hW5d  
new SelectionSort(), l9? ] t;  
new ShellSort(), w6v P a  
new QuickSort(), cm]8m_!  
new ImprovedQuickSort(), v-_K'm  
new MergeSort(), 8H3|^J  
new ImprovedMergeSort(), mgh,)=2cE(  
new HeapSort() jsfyNl? 6  
}; q-X)tH_+w@  
@kRe0:t  
public static String toString(int algorithm){ 8%>  Ls  
return name[algorithm-1]; 4E&URl0Bh  
} E(>RmPP=7  
L:%; Fx2  
public static void sort(int[] data, int algorithm) { ~'=s?\I  
impl[algorithm-1].sort(data); TZ?va@2  
} v8Bi1,g  
2*F["E  
public static interface Sort { 8yA :C  
public void sort(int[] data); thl{IU  
} c7L#f=Ot?  
<s)+V6 \E  
public static void swap(int[] data, int i, int j) { %AXa(C\1  
int temp = data; WDW b 7  
data = data[j]; xaAJ>0IM  
data[j] = temp; G! L=W#{  
} p p9Gzn C  
} #4Xe zj,g*  
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