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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。 %-NG eN8  
插入排序: r`:dUCFE  
?T[K{t;~jo  
package org.rut.util.algorithm.support; )Vx C v  
.ldBl  
import org.rut.util.algorithm.SortUtil; r9^~I  
/** NX<Q}3cC  
* @author treeroot 7)Bizlf  
* @since 2006-2-2 :HN\A4=kc(  
* @version 1.0 Ng1[y4R}  
*/ 88atj+N]  
public class InsertSort implements SortUtil.Sort{ 1 swqs7rR|  
B]cV|S|  
/* (non-Javadoc) 4({Wipd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 J~KM=p  
*/ |DoD.?v  
public void sort(int[] data) { Cqw`K P  
int temp; M4}zRr([.5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j|(bdTZY:  
} 6b=7{nLF  
} \F),SL  
} ~2U5Wt  
3VmF1w 2  
} n'Z5rXg  
}kb6;4>c  
冒泡排序: VxGR[kq$]  
Gv }~  
package org.rut.util.algorithm.support; o_%gFV[q  
fhQ}Z%$  
import org.rut.util.algorithm.SortUtil; ^Jn=a9Q6Z  
{DGnh1  
/** BYsQu.N  
* @author treeroot r*4@S~;  
* @since 2006-2-2 1ba* U~OEg  
* @version 1.0 CjlA"_!%E  
*/ cP(is!  
public class BubbleSort implements SortUtil.Sort{ I)cA:Ip  
-#"7F:N1  
/* (non-Javadoc)  ,L7:3W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 gx(L*y,  
*/ ?$rH yI  
public void sort(int[] data) { E,:E u<  
int temp; iQ_^MzA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Fo[=Dh*AqU  
if(data[j] SortUtil.swap(data,j,j-1); RkXW(T`  
} 5iP{)  
} =OF]xpI'&a  
} >qjV(_?F-  
} SI@Yct]<g  
qx\P(dOUf  
} w?zY9Fs=s  
Y!L<& sl   
选择排序: 7[u$!.4{*  
Pi:=0,"XOp  
package org.rut.util.algorithm.support; e.ksN  
)MJy  
import org.rut.util.algorithm.SortUtil; x$\w^h\F  
 #mcU);s  
/** ^5d9n<_xnQ  
* @author treeroot u9R:2ah&K  
* @since 2006-2-2 rCdf*;  
* @version 1.0 P_3U4J  
*/ &24z`ZS[w6  
public class SelectionSort implements SortUtil.Sort { ^L;k  
$*i"rlJC  
/* n32.W?9  
* (non-Javadoc) o|0QstSCl  
* !u=,bfyH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9K`uGu  
*/ mjz<,s`D  
public void sort(int[] data) { CuD^@  
int temp; PofHe  
for (int i = 0; i < data.length; i++) { '}q1 F<&  
int lowIndex = i; 2r|!:^'?W  
for (int j = data.length - 1; j > i; j--) { ^U4|TR6mub  
if (data[j] < data[lowIndex]) { #XlE_XD  
lowIndex = j; pe1_E KU  
}  kwd)5J  
} DfQD!}=  
SortUtil.swap(data,i,lowIndex); ?nAKB5=  
} %d\|a~p:  
} JKsdPW<?  
I^z$0  
} /o_h'l|PS  
 !bi}9w  
Shell排序: wzRIvm{  
1#3 Qa{i  
package org.rut.util.algorithm.support; CxOBH89(  
?)~j>1"S  
import org.rut.util.algorithm.SortUtil; 8/y~3~A{D  
%aszZP  
/** Hf'yRKACj  
* @author treeroot zjrr*iw  
* @since 2006-2-2 )*Qa 9+ :  
* @version 1.0 rpNe8"sh  
*/ 6v9{ $:  
public class ShellSort implements SortUtil.Sort{ ymsqJ   
HGgw<Os-k  
/* (non-Javadoc) plY`lqm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ew n/@;E  
*/ `f2m5qTP%  
public void sort(int[] data) { o\luE{H .?  
for(int i=data.length/2;i>2;i/=2){ G"BoD5m  
for(int j=0;j insertSort(data,j,i); E5%ae (M^  
} IrRn@15,  
} N -]m <z>  
insertSort(data,0,1); A_t<SG5  
} !!c.cv'  
CDcs~PR@B  
/** i`g>Y5   
* @param data YSuw V)Y  
* @param j !HXdUAKu  
* @param i f-\l<o(  
*/ ^saJfr x  
private void insertSort(int[] data, int start, int inc) { b'N"?W^YQ  
int temp; /Ki :6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Pc]c8~  
} nDvny0^a  
} rrSA.J{  
} r,6~?hG]  
q\[31$i$  
} &-+&`h|s  
=*'X  
快速排序: ,>(M5\Z/c  
lb1(1 |#  
package org.rut.util.algorithm.support; >t8eVMMa  
q<JI!n1O  
import org.rut.util.algorithm.SortUtil; |y%pP/;&!  
E"Xi  
/** /]xd[^  
* @author treeroot d*3R0Q|#{  
* @since 2006-2-2 N13 <!QQ  
* @version 1.0 NUL~zb  
*/ Dz)bP{iq"  
public class QuickSort implements SortUtil.Sort{ W,agP G\+  
3iWLo Qm  
/* (non-Javadoc) % wRJ"T`Tt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qrX6FI  
*/ Gz*U?R-T  
public void sort(int[] data) { GZ'hj_2%<  
quickSort(data,0,data.length-1); .yWdlq##  
} l:@.D|(o3  
private void quickSort(int[] data,int i,int j){ & 8&WY1cU  
int pivotIndex=(i+j)/2; 1shvHmrV  
file://swap 1xtbhk]D  
SortUtil.swap(data,pivotIndex,j); 71/6=aq>n  
?qK:P  
int k=partition(data,i-1,j,data[j]); &2\.6rb.  
SortUtil.swap(data,k,j); #3CA  
if((k-i)>1) quickSort(data,i,k-1); G>_ZUHd I  
if((j-k)>1) quickSort(data,k+1,j); xD lC]loi7  
@pko zE-  
} i&LbSxUh9  
/** \aW5V:?  
* @param data rWvJ{-%  
* @param i Vfw$>og!  
* @param j 3]VTQl{P  
* @return @/7Rp8Fr  
*/ lMO0d_:b1  
private int partition(int[] data, int l, int r,int pivot) { $K G?d>wx  
do{ R\+$^G}#6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,vhR99g{  
SortUtil.swap(data,l,r); X>wQYIi  
} yWK[@;S]%  
while(l SortUtil.swap(data,l,r); gh 0\9;h  
return l; }M~AkJL  
} n+i}>3'A  
O>>8%=5Q  
} l;;:3:  
igQyn|  
改进后的快速排序: 1IsR}uLh  
jf2E{48P  
package org.rut.util.algorithm.support; eeX>SL5'i  
UmJg-~  
import org.rut.util.algorithm.SortUtil; L`p[Dq.  
N!va12  
/** #\M<6n{  
* @author treeroot bIhL!Ty T.  
* @since 2006-2-2 1h"B-x  
* @version 1.0 l%:_#1?isf  
*/ w])Sz*J  
public class ImprovedQuickSort implements SortUtil.Sort { #*`|}_6L  
&Y&zUfA  
private static int MAX_STACK_SIZE=4096; 5u!cA4e"  
private static int THRESHOLD=10; 1hN! 2Y:  
/* (non-Javadoc) 0jyokER  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cm&itG  
*/ LSs={RD2+p  
public void sort(int[] data) { !`WuLhB`  
int[] stack=new int[MAX_STACK_SIZE]; p[$I{F*a  
7 D^A:f  
int top=-1; *Zvw&y*  
int pivot; xWMMHIu  
int pivotIndex,l,r; nk{1z\D{  
@PI\.y_w  
stack[++top]=0; 0Nfj}sXCWE  
stack[++top]=data.length-1; (AS%P?  
 96BMJE'  
while(top>0){ C+mU_g>  
int j=stack[top--]; 7MfT~v  
int i=stack[top--]; cQR1v-Xt  
)v9[/ ]*P  
pivotIndex=(i+j)/2; `#]\Wnp~y  
pivot=data[pivotIndex]; |bk*Lgkzw  
$1v5*E  
SortUtil.swap(data,pivotIndex,j); 2*M*<p=v  
|); >wV"  
file://partition >&VL2xLy  
l=i-1; oxzNV&D[{`  
r=j; D)_Ei'+*l  
do{ ^ WNJQg'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S|[UEU3FpB  
SortUtil.swap(data,l,r); >W;i2%T  
} )~/U+,  
while(l SortUtil.swap(data,l,r); 'GFzI:Xr  
SortUtil.swap(data,l,j); HZ}*o%O  
d}ZH Y[  
if((l-i)>THRESHOLD){ !r|X6`g  
stack[++top]=i; ]Q3Gj@6  
stack[++top]=l-1; gy{a+Wbc*  
} pV7Gh`<y  
if((j-l)>THRESHOLD){ "YL-!P  
stack[++top]=l+1; "7HB3?2>W  
stack[++top]=j; @>Keu\)  
} Cu:Zn%  
)hug<D *h  
} gNwXOd u  
file://new InsertSort().sort(data); ju#6 3  
insertSort(data); 5)UmA8"zVB  
} #lF<="y%X  
/** \ax%I)3  
* @param data qx)k1QY  
*/ X2cR+Ha0  
private void insertSort(int[] data) { qN@a<row&~  
int temp; j;)6uia*A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]D%k)<YK  
}  qR qy  
} S F>D:$a  
} PAHlj,n)  
Gq*)]X{U a  
} F"xO0t  
8(>.^667  
归并排序: d 4]%Wdvf  
$]kg_l)  
package org.rut.util.algorithm.support; v=tj.Vg  
Yys~p2  
import org.rut.util.algorithm.SortUtil; )\-";?sYky  
pGY]Vw Y  
/** `fZD%o3l  
* @author treeroot 6[.Mx}h6  
* @since 2006-2-2 aLi_Hrb9  
* @version 1.0 [+g@@\X4  
*/ N-`;\  
public class MergeSort implements SortUtil.Sort{ v9U(sEDq  
-vHr1I<  
/* (non-Javadoc) P]"d eB|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DYlvxF`  
*/ k-V I9H!,  
public void sort(int[] data) { WuFwt\U  
int[] temp=new int[data.length]; {X<4wxeTo  
mergeSort(data,temp,0,data.length-1); *W12Rb2  
} *O> aqu  
.vS6_  
private void mergeSort(int[] data,int[] temp,int l,int r){ P0e""9JOo  
int mid=(l+r)/2; cmhN(==  
if(l==r) return ; kLt9; <L  
mergeSort(data,temp,l,mid); H'{?aaK|t  
mergeSort(data,temp,mid+1,r); Ia`JIc^e  
for(int i=l;i<=r;i++){ M~Qj'VVL  
temp=data; S tnv>  
} 6@q[tN7_^  
int i1=l; &3Z. #*  
int i2=mid+1; ~59`S#ax/l  
for(int cur=l;cur<=r;cur++){ x XM!E 8  
if(i1==mid+1) PCPf*G>  
data[cur]=temp[i2++]; {R-82%X  
else if(i2>r) oD#>8Aws  
data[cur]=temp[i1++]; vM7vf6  
else if(temp[i1] data[cur]=temp[i1++]; vA"niO  
else 1N9< d,  
data[cur]=temp[i2++]; u'i%~(:$\)  
} /J.\p/%\  
} =6L*!JP<  
"6N~2q,SW  
} ml.;wB|  
~r^5-\[hZ  
改进后的归并排序: o}MzqKfu  
oU0 h3  
package org.rut.util.algorithm.support; XDkS ^9  
Mf:M3H%YV+  
import org.rut.util.algorithm.SortUtil; Ji6`-~ k  
-nk#d%a\  
/** g T XW2S  
* @author treeroot 'Z.OF5|eGT  
* @since 2006-2-2 9G#8 %[W  
* @version 1.0 E-sSRt  
*/ W&e'3gk_  
public class ImprovedMergeSort implements SortUtil.Sort { qA/#IUi)1  
G7Z vfLR{:  
private static final int THRESHOLD = 10; _7lt(f[S  
M_h8#7{G  
/* |,;twj[?4  
* (non-Javadoc) cXS;z.M\_  
* ,$h(fM8GC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NTm<6Is`  
*/ v`S2M  
public void sort(int[] data) { %9T~8L @.  
int[] temp=new int[data.length]; > 'aG /(  
mergeSort(data,temp,0,data.length-1); hIVI\U,  
} WVS$O99Y  
cgs3qI  
private void mergeSort(int[] data, int[] temp, int l, int r) { V(;55ycr  
int i, j, k; |P~O15V*Q  
int mid = (l + r) / 2; [x!i* rW3  
if (l == r) j-J(C[[9  
return; R2}kz.  
if ((mid - l) >= THRESHOLD) L#`2.nU  
mergeSort(data, temp, l, mid); 2J;kD2"!  
else m$fQ`XzU  
insertSort(data, l, mid - l + 1); @[MO,J&h  
if ((r - mid) > THRESHOLD) n1QEu"~Zj  
mergeSort(data, temp, mid + 1, r); 5vD3K! \u  
else oL<BLr9>  
insertSort(data, mid + 1, r - mid); u64 @"P  
C=N! z  
for (i = l; i <= mid; i++) { iH-bo@  
temp = data; CifA,[l34  
} \U/v;Ijf  
for (j = 1; j <= r - mid; j++) { _*s~`jn{H  
temp[r - j + 1] = data[j + mid]; tT;8r8@  
} j~Q}F|i8  
int a = temp[l]; .#*D!;f  
int b = temp[r]; 7\mDBG  
for (i = l, j = r, k = l; k <= r; k++) { Ri|k<io  
if (a < b) { ,H>W:O  
data[k] = temp[i++]; NW z9C=y  
a = temp; A-Mj|V  
} else { glv ;C/l  
data[k] = temp[j--]; (tepmcf  
b = temp[j]; oP/>ju  
} SOVj Eo4'3  
} 2(pLxVl  
} R7lYu\mA  
hM?`x(P  
/** %/51o6a  
* @param data d$w(-tV42  
* @param l p"2m90IO  
* @param i wHf&R3fg  
*/ G\R*#4cF  
private void insertSort(int[] data, int start, int len) { Z a! gbt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rn;<HT  
} Hb+X}7c$  
} le.anJAr  
} rWA6X DM7  
} PSPTL3_~  
)i;un.  
堆排序: V\0E=M*P  
1I ""X]I_  
package org.rut.util.algorithm.support; "?35C !  
FQ`(b3.   
import org.rut.util.algorithm.SortUtil; _BbvhWN&+  
2HD:JdL  
/** ~(P&g7u  
* @author treeroot e!GZSk   
* @since 2006-2-2 ?-f,8Z|h  
* @version 1.0 msiu8E  
*/ *Ddi(`  
public class HeapSort implements SortUtil.Sort{ |jsb@  
|d[5l^6  
/* (non-Javadoc) ++b$E&lYU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8] `Ru5nd  
*/ j C)-`_  
public void sort(int[] data) { Us]=Y}(  
MaxHeap h=new MaxHeap(); ;r.EC}>m  
h.init(data); HJIC<U  
for(int i=0;i h.remove(); U6<M/>RG$  
System.arraycopy(h.queue,1,data,0,data.length); QOH<]~3J  
} {L].T#  
dxK9:IX  
private static class MaxHeap{ ]W/>Ldv  
Or8kp/d  
void init(int[] data){ 2Q@Y^t   
this.queue=new int[data.length+1]; /`3 #4=5-  
for(int i=0;i queue[++size]=data; .fp&MgiQ  
fixUp(size); I`T1Pll  
} y!~qbh[  
} {e"dm5  
uH:YKH':/  
private int size=0; wP<07t[-g  
WF[bO7:  
private int[] queue; vcv CD7MD  
2:SO_O4C  
public int get() { [ c~kF+8  
return queue[1]; "g0(I8  
} y t5H oy  
g9~]s 9  
public void remove() { pr&=n;_ n  
SortUtil.swap(queue,1,size--); ,eRQu.  
fixDown(1); 5)UQWnd5  
} |ZiC`Nt  
file://fixdown ) #+^ sAO  
private void fixDown(int k) { SwW['c'*]B  
int j; .4-,_`T?  
while ((j = k << 1) <= size) { =5x&8i  
if (j < size %26amp;%26amp; queue[j] j++; a`!@+6yC  
if (queue[k]>queue[j]) file://不用交换 ;+/o?:AH  
break; 2oCkG~j  
SortUtil.swap(queue,j,k); k~.&j"K  
k = j; "@/62b  
} Ba'LRz  
} ~ G6"3"  
private void fixUp(int k) { 2=iH$v  
while (k > 1) { bt$)Xu<R  
int j = k >> 1; +>\id~c(  
if (queue[j]>queue[k]) [yS#O\$'e  
break; X3%Ic`Lq#  
SortUtil.swap(queue,j,k); B9,^mE#  
k = j; n6<V+G)T  
} &ldBv_  
} {{yZ@>o6  
=] C]=  
} 5jxQW ;  
S* *oA 6  
} 9DQa PA6  
%w7pkh,  
SortUtil: \Ae9\Jp8M  
NnT g3:.  
package org.rut.util.algorithm; C3NdE_E  
^Yj xeNY  
import org.rut.util.algorithm.support.BubbleSort; JM- t<.  
import org.rut.util.algorithm.support.HeapSort; ]X Z-o>+ ,  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z|" p*5O,  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7R!5,Js+  
import org.rut.util.algorithm.support.InsertSort; d5 7i)=  
import org.rut.util.algorithm.support.MergeSort; $37 g]ZD  
import org.rut.util.algorithm.support.QuickSort; !V 2/A1?  
import org.rut.util.algorithm.support.SelectionSort; E.|-?xQ6  
import org.rut.util.algorithm.support.ShellSort; F# T 07<  
6(d}W2GP  
/** b` Hz$8  
* @author treeroot 29CINC  
* @since 2006-2-2 V-'K6mn;  
* @version 1.0 %\|'%/"`2(  
*/ Bw%Qbs0Q  
public class SortUtil { lKZB?Kk^w\  
public final static int INSERT = 1; w@JKl5  
public final static int BUBBLE = 2; p~ HW5\4  
public final static int SELECTION = 3; Tm_B^ W}  
public final static int SHELL = 4; ]$b[` g&  
public final static int QUICK = 5; r}[7x]sP  
public final static int IMPROVED_QUICK = 6; <S?ddp2  
public final static int MERGE = 7; J]f3CU,<N  
public final static int IMPROVED_MERGE = 8; xk&Jl#v  
public final static int HEAP = 9; !aO` AC=5u  
;q N+^;,2  
public static void sort(int[] data) { U!U$x74D5  
sort(data, IMPROVED_QUICK); hW!)w  
} gUyR_5q)8l  
private static String[] name={ oy<WsbnS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GFr|E8  
}; ~/.7l8)  
g1t0l%_7^  
private static Sort[] impl=new Sort[]{ #9K-7je;j  
new InsertSort(), o,|[GhtHqs  
new BubbleSort(), C z\Ppq  
new SelectionSort(), xhcK~5C  
new ShellSort(), sc,Xw:YO  
new QuickSort(), 0}_[DAd6  
new ImprovedQuickSort(), HRB<Y mP@  
new MergeSort(), jH_JmYd  
new ImprovedMergeSort(), xyI}y(CN1  
new HeapSort() q$=#A7H>3)  
}; OpHsob~  
zc[Si bT  
public static String toString(int algorithm){ rtc9wu  
return name[algorithm-1]; F_CYYGZ  
} qvPtyc^fN  
7hsGua  
public static void sort(int[] data, int algorithm) { fkac_X$7  
impl[algorithm-1].sort(data); P#AW\d^"B  
} t.;LnrY  
thhwN A  
public static interface Sort { 7Hs%Cc"  
public void sort(int[] data); P-9<YN  
} X 7rMeu  
)= =Jfn y  
public static void swap(int[] data, int i, int j) { 6fw(T.Pe  
int temp = data; *c2YRbU(  
data = data[j]; ?"g!  
data[j] = temp; d@qsdYu-*  
} :8OZ#D_Hl  
} jbAx;Xt'=M  
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