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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。 l$XPIC~H  
插入排序: -DjJ",h( $  
yCP4r6X0  
package org.rut.util.algorithm.support; pr&=n;_ n  
]JXKZV8$0  
import org.rut.util.algorithm.SortUtil; [M%._u,  
/** E=$p^s  
* @author treeroot 2YlH}fnH  
* @since 2006-2-2 x`%JI=q  
* @version 1.0 S\=1_LDx"  
*/ b?T  
public class InsertSort implements SortUtil.Sort{ oyvKa g  
n}?wVfEy  
/* (non-Javadoc) Gh\q^?}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GpI!J}~m  
*/ +?dl`!rE  
public void sort(int[] data) { c{Ou^.yR  
int temp; xfFg,9w8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ba@ctkCW  
} %IY``r)j  
} {A:j[  
} [{ ~TcT  
t9cl"F=  
} ; )Eo7?]-  
F_H82BE+3  
冒泡排序: S1S;F9F  
A/}W&bnluD  
package org.rut.util.algorithm.support; bt$)Xu<R  
y*23$fj(  
import org.rut.util.algorithm.SortUtil; k{I 01  
. (}1%22  
/** \ck+GW4&  
* @author treeroot (Pbg[AY  
* @since 2006-2-2 t#i,1aHA  
* @version 1.0 hA1-){aw3q  
*/ .(CP. d  
public class BubbleSort implements SortUtil.Sort{ /i]y$^  
6 #@ f'~s  
/* (non-Javadoc) ])}(k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cC'x6\a  
*/ n$n 7-7  
public void sort(int[] data) { r^,<(pbd  
int temp; x[ 3A+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T0zn,ej  
if(data[j] SortUtil.swap(data,j,j-1); \S~Vx!9w  
} .iD*>M:W  
} !\Xm!I8  
} "Wo,'8{v  
} NnT g3:.  
i0jBZW"_1$  
} C3NdE_E  
\ZU1J b1c  
选择排序: }Gyqq6Aeb  
VVP:w%yW  
package org.rut.util.algorithm.support; hvka{LD  
sarq`%zrk  
import org.rut.util.algorithm.SortUtil; ',^+bgs5  
Uyx!E4pl(  
/** -Go 7"j  
* @author treeroot r.ZF_^y}+  
* @since 2006-2-2 j hbonuV_  
* @version 1.0 qqrq11W  
*/ svf|\p>]H  
public class SelectionSort implements SortUtil.Sort { !V 2/A1?  
sZGj"_-Hzu  
/* B=8Iu5m  
* (non-Javadoc) GVHV =E  
* ^z6_Uw[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >K9#3 4hP  
*/ 4;`oUt'.  
public void sort(int[] data) { _j?e~w&0b  
int temp; _WXtB#  
for (int i = 0; i < data.length; i++) { a ] =  
int lowIndex = i; jO*l3:!~\  
for (int j = data.length - 1; j > i; j--) { UhA"nt0  
if (data[j] < data[lowIndex]) { :+Om]#`Vls  
lowIndex = j; :0 & X^]\  
} `K~AhlJUQ  
} 2_vbT!_  
SortUtil.swap(data,i,lowIndex); r%:+$aIt  
} h\v'9  
} ,to+oSZE  
,1OyN]f3  
} c:Wze*vI ;  
GaX[C<Wt  
Shell排序: g<{xC_J  
)q7UxzE+  
package org.rut.util.algorithm.support; $`R6=\|  
 <1%f@}+8  
import org.rut.util.algorithm.SortUtil; PxH72hBS  
D?XM,l+  
/** J Ro?s~Ih  
* @author treeroot FFdBtB  
* @since 2006-2-2 b4^`DHRu6  
* @version 1.0 0c K{  
*/ E|'h]NY  
public class ShellSort implements SortUtil.Sort{ M@0;B30L  
@2'Mt}R>  
/* (non-Javadoc) 2{|h8oz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7i&:DePM'q  
*/ T^J>ZDA  
public void sort(int[] data) { 5waKI?4F  
for(int i=data.length/2;i>2;i/=2){ "HE^v_p  
for(int j=0;j insertSort(data,j,i); \+aC"#+0  
} _uc hU=  
} V3 ~~  
insertSort(data,0,1); .{y uo{u  
} ]?*I9  
9]q:[zm^  
/** &gzCteS  
* @param data T)r9-wOq  
* @param j  Yn8=  
* @param i C z\Ppq  
*/ ~ vqa7~}m  
private void insertSort(int[] data, int start, int inc) { R<OI1,..r  
int temp; 4Y[1aQ(%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (}}S9 K  
} W`c'=c  
} E[Cb|E  
} |4'Y/re  
jH_JmYd  
} BcI |:qv|  
xyI}y(CN1  
快速排序: /7gOSwY  
q$=#A7H>3)  
package org.rut.util.algorithm.support; 9K1oZ?)_z  
_a1x\,R|DB  
import org.rut.util.algorithm.SortUtil; GvBHd%Ot  
6? w0  
/** ;Iq/l%vX  
* @author treeroot l+V>]?j  
* @since 2006-2-2 K4kMM*D  
* @version 1.0 ,G)r=$XU  
*/ T#>7ub  
public class QuickSort implements SortUtil.Sort{ o"*AtGR+"  
812$`5l  
/* (non-Javadoc) =ZqT3_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G;YrF)\  
*/ r?/'!!4  
public void sort(int[] data) { -\C!I  
quickSort(data,0,data.length-1); i-6 Z"b{  
} ~c\e'&sc;  
private void quickSort(int[] data,int i,int j){ Qjb:WC7he  
int pivotIndex=(i+j)/2; .0es 3Rj  
file://swap p|!  
SortUtil.swap(data,pivotIndex,j); #'y#"cmQ.  
4ecP*g  
int k=partition(data,i-1,j,data[j]); NX}<*b/  
SortUtil.swap(data,k,j); R6(oZph  
if((k-i)>1) quickSort(data,i,k-1); I1X-s  
if((j-k)>1) quickSort(data,k+1,j); EKO[!,  
13>0OKg`#  
} UeRj< \"Q  
/** D|{jR~J)xK  
* @param data ga`3 (  
* @param i J@u;H$@/y  
* @param j /{&tY: ;m  
* @return bD?VU<)3  
*/ R~PA 1wDZ  
private int partition(int[] data, int l, int r,int pivot) { .hifsB~  
do{ Om5Y|v"*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c I4K+  
SortUtil.swap(data,l,r); w 47tgPPk  
} n^g|Ja  
while(l SortUtil.swap(data,l,r); (=om,g}  
return l; maNl^i  
} 3eF -8Z(f  
sc}~8T  
} <_-hRbS  
~Yy>zUH^X  
改进后的快速排序: X"fb;sGT  
ojan Bg   
package org.rut.util.algorithm.support; Ys\Wj%6A  
Rx}$0c0  
import org.rut.util.algorithm.SortUtil; '!eKTC>  
oaIi2=Tf  
/** rp ;b" q  
* @author treeroot }F#okU  
* @since 2006-2-2 r/u A.Aou^  
* @version 1.0 y#3j`. $3p  
*/ G U( _  
public class ImprovedQuickSort implements SortUtil.Sort { `)_dS&_\  
6;ixa hZV  
private static int MAX_STACK_SIZE=4096; TOB]IrW  
private static int THRESHOLD=10; {A05u3}  
/* (non-Javadoc) ;5659!;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .N ,3 od@  
*/ gMzcTmbc8  
public void sort(int[] data) { zdYy^8V|z  
int[] stack=new int[MAX_STACK_SIZE]; =\H!GT  
 PoxK{Y  
int top=-1; ^rifRY-,yO  
int pivot; xe^Gs]fm  
int pivotIndex,l,r; ,X`)ct  
6">+ ~ G  
stack[++top]=0; ,g2ij  
stack[++top]=data.length-1; e,W%uH>X  
NTYg[VTr  
while(top>0){ [PNT\ElT  
int j=stack[top--]; ?#}N1k\S  
int i=stack[top--]; SAy=WV  
e&&53?  
pivotIndex=(i+j)/2; I|^;B 8[  
pivot=data[pivotIndex]; B><d9d  
iKX-myCz  
SortUtil.swap(data,pivotIndex,j); wk5s)%V  
^ hZ0IM  
file://partition W04@!_) <  
l=i-1; e4? >-  
r=j; RBs-_o+%  
do{ 2N: ,Q8~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [YlKR'_  
SortUtil.swap(data,l,r); [XEkz#{  
} ;DFSzbF`  
while(l SortUtil.swap(data,l,r); 21K>`d\  
SortUtil.swap(data,l,j); )48QBz?  
;:\<gVi:  
if((l-i)>THRESHOLD){ >\KNM@'KI  
stack[++top]=i; u{['<r;I  
stack[++top]=l-1; UQ?XqgUM  
} Ya3C#=  
if((j-l)>THRESHOLD){ (k5We!4[1  
stack[++top]=l+1; -p]1=@A<}  
stack[++top]=j; $w2u3 -  
} |}BL F  
F\KjEl0  
} bDL,S?@  
file://new InsertSort().sort(data); |H;F7Y_  
insertSort(data); ,JAx ?Xb  
} 6-$jkto  
/** _>(^tCo  
* @param data =;Rtdy/Yn%  
*/ QbkLdM,S*  
private void insertSort(int[] data) { (^T F%(H  
int temp; 6jE |  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e2s]{obf  
} HK,cJah q  
} }wr{W:j  
} g{OwuAC_  
z> Rsi  
} j*so9M6|c  
$'BSH4~|.  
归并排序: Pg,b-W?n*  
dJJP3} M/  
package org.rut.util.algorithm.support; G_bG  
We$:&K0  
import org.rut.util.algorithm.SortUtil; E ~Sb  
,?8qpEG~#+  
/** $q6BP'7  
* @author treeroot 7K,-01-:  
* @since 2006-2-2 _x%7@ .TB  
* @version 1.0 y{ibO}s  
*/ ^1iSn)&  
public class MergeSort implements SortUtil.Sort{ JEXy%hl  
l=S35og  
/* (non-Javadoc) e6@=wnoX u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r e/@D@%  
*/ O#:$^#j&  
public void sort(int[] data) { \F1_lq;K  
int[] temp=new int[data.length]; t<#mP@Mz=N  
mergeSort(data,temp,0,data.length-1); UQ)W%Y;[0  
} 4|buk]9  
zi|+HM  
private void mergeSort(int[] data,int[] temp,int l,int r){ F U_jGwD  
int mid=(l+r)/2; -+(jq>t  
if(l==r) return ; [#-b8Cu  
mergeSort(data,temp,l,mid); @L<*9sLWh  
mergeSort(data,temp,mid+1,r); 7Ri46Tkt  
for(int i=l;i<=r;i++){ v- T$:cL  
temp=data; ;X?}x%$  
} |'P]GK  
int i1=l; SQBa;hvgM  
int i2=mid+1; &]"  
for(int cur=l;cur<=r;cur++){ 8ja$g,  
if(i1==mid+1) 7X0Lq}G@  
data[cur]=temp[i2++]; k;K)xb[w|  
else if(i2>r) U 9_9l7&r  
data[cur]=temp[i1++]; (D#B_`;-  
else if(temp[i1] data[cur]=temp[i1++]; fkuLj%R  
else ii[F]sR\  
data[cur]=temp[i2++]; 3h;{!|-3  
} Y2a5bc P  
} h1B? 8pD  
qaiNz S@q  
} W5EDVP ur  
aoMqSwF=  
改进后的归并排序: /Y9>8XSc  
*7CV^mDm  
package org.rut.util.algorithm.support; :[wsKFaV+  
+o\:d1y  
import org.rut.util.algorithm.SortUtil; ah+~y,Gl  
C7rNV0.Fq  
/** JJP08 oP  
* @author treeroot S>h;K`  
* @since 2006-2-2 15%w 8u  
* @version 1.0 '8Q]C*Z  
*/ xbdN0MAU  
public class ImprovedMergeSort implements SortUtil.Sort { rM`X?>iT+  
iq8Grd L"  
private static final int THRESHOLD = 10; {IxA)v-`  
jr)1(**  
/* (!ZM{Js%  
* (non-Javadoc) Q\^O64geD  
* S|SV$_ (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X &uTSgN  
*/ AJh w  
public void sort(int[] data) { 1n=lqn/  
int[] temp=new int[data.length]; &~8oQC-eF  
mergeSort(data,temp,0,data.length-1); N >FKy'.gk  
} !TAlB kj  
f%SZg!+t  
private void mergeSort(int[] data, int[] temp, int l, int r) { KC/=TSSXd.  
int i, j, k; &M46&^Jho  
int mid = (l + r) / 2; kStnb?nk  
if (l == r) v=0(~<7B  
return; GR&z,  
if ((mid - l) >= THRESHOLD) .:@Ykdm4I  
mergeSort(data, temp, l, mid); fKeT,U`W  
else )Ub_@)X3%l  
insertSort(data, l, mid - l + 1); kh {p%<r{  
if ((r - mid) > THRESHOLD) 7op`s5i  
mergeSort(data, temp, mid + 1, r); &+cEV6vb+  
else iIMd!Q.)@  
insertSort(data, mid + 1, r - mid); ~D<IB#C  
D&od?3}E  
for (i = l; i <= mid; i++) { .n#@$ nGZ  
temp = data; Mmxlp .l  
} 5*+!+V^?X  
for (j = 1; j <= r - mid; j++) { (zgW%{V@  
temp[r - j + 1] = data[j + mid]; C>-aIz!y  
} O[I\A[*  
int a = temp[l]; @OV|]u  
int b = temp[r]; ~<O7$~  
for (i = l, j = r, k = l; k <= r; k++) { q;R],7Re  
if (a < b) { MLoYnR^  
data[k] = temp[i++]; G}:w@}h/  
a = temp; p~SClaR3H  
} else { wfNk=)^$  
data[k] = temp[j--]; RX>xB  
b = temp[j]; dYG,_ji  
} v'U{/ ,x  
} % 5m/  
} qAAX;N  
z>XrU>}  
/** \?Z{hmN  
* @param data Q3 u8bx|E  
* @param l w\(.3W7  
* @param i NL!u<6y  
*/ ABQa 3{v  
private void insertSort(int[] data, int start, int len) { OjFLPGRCh  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =8t]\Y?  
} +aJ>rR  
} x.f]1S7h[  
} fI{ESXU  
} tasIDoo+!J  
G f,`  
堆排序: 2[Z,J%:0  
N!ls j \-  
package org.rut.util.algorithm.support; P#R R9>Q  
^Y@\1fX 4e  
import org.rut.util.algorithm.SortUtil; SLkhCR  
VRI0W`  
/** Jbjmv: db  
* @author treeroot j <Bkj/  
* @since 2006-2-2 )we}6sE"  
* @version 1.0 .}q&5v  
*/ v K9E   
public class HeapSort implements SortUtil.Sort{ ] Bcp;D  
E;Y;z  
/* (non-Javadoc) M!/Cknm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]!I7Y.w6  
*/ $* AYcy7  
public void sort(int[] data) { o$#G0}yn  
MaxHeap h=new MaxHeap(); -&3hEv5  
h.init(data); 4?ICy/,U-  
for(int i=0;i h.remove(); gLE:g5v6  
System.arraycopy(h.queue,1,data,0,data.length); I,0q4  
} JBi*P.79^  
}])oM|fgO  
private static class MaxHeap{ )\eI;8  
%+j8["VEC  
void init(int[] data){ LW[9  
this.queue=new int[data.length+1]; m;'6MHx;  
for(int i=0;i queue[++size]=data; PK{acen  
fixUp(size); jF0jkj1&/[  
} {)BTR%t  
} UmKI1l  
iH/6M  
private int size=0; d{SG Cr 9d  
Jth[DUH8H  
private int[] queue; n@C[@?D  
`-(|>5wWS  
public int get() { oXb;w@:  
return queue[1]; Fx;QU)1l3  
} )6q,>whI]  
# WAZ9,t  
public void remove() { YE|SKx@  
SortUtil.swap(queue,1,size--); Tw""}|] g  
fixDown(1); G&i!Hs  
} (#Wu# F1;  
file://fixdown 1DE1.1  
private void fixDown(int k) { ;A]@4*q  
int j; {@+Ty]e  
while ((j = k << 1) <= size) { Yzh"1|O  
if (j < size %26amp;%26amp; queue[j] j++; Hkwl>R$  
if (queue[k]>queue[j]) file://不用交换 #73F} tZ^  
break; i.3= !6z  
SortUtil.swap(queue,j,k); P{wF"vf  
k = j; MUTj-1H6)  
} iPd[l {85Z  
} *h'=3w:G  
private void fixUp(int k) { 0w)^)  
while (k > 1) { l:j4Ft 8  
int j = k >> 1; N'^&\@)xiU  
if (queue[j]>queue[k]) _a6[{_Pc  
break; ~yH?=:>U  
SortUtil.swap(queue,j,k); swM*k;$q{  
k = j; q(`/Vo4g(  
} rEB @$C^  
} P(+&OoY2  
RloK,bg  
} n?- })  
{so `/EWa  
} [H6hyG~  
a0D%k:k5  
SortUtil: D|e uX7b  
k@/sn (x  
package org.rut.util.algorithm; fh](K'P#^  
-Z 4e.ay5  
import org.rut.util.algorithm.support.BubbleSort; 555XCWyrC  
import org.rut.util.algorithm.support.HeapSort; -_1>C\h"  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8=NM|i  
import org.rut.util.algorithm.support.ImprovedQuickSort; gj*+\3KO@a  
import org.rut.util.algorithm.support.InsertSort; j!U-'zJ  
import org.rut.util.algorithm.support.MergeSort; Dpl A?  
import org.rut.util.algorithm.support.QuickSort; .P[ _<8  
import org.rut.util.algorithm.support.SelectionSort; Cj{1H([-  
import org.rut.util.algorithm.support.ShellSort; }+C2I  
H@%GSE  
/** Uk^B"y_  
* @author treeroot (C@mLu)  
* @since 2006-2-2 I@yCTl uV$  
* @version 1.0 K i'Fn"  
*/ 5@+,Xh,H|t  
public class SortUtil { ,N!o  
public final static int INSERT = 1; 2E}*v5b,  
public final static int BUBBLE = 2; P_*" dza  
public final static int SELECTION = 3; _V7r1fY:  
public final static int SHELL = 4; umt.Um.m2  
public final static int QUICK = 5; YVHm{A1b0  
public final static int IMPROVED_QUICK = 6; FB{KH .  
public final static int MERGE = 7; -OapVac  
public final static int IMPROVED_MERGE = 8; ;#vKi0V7  
public final static int HEAP = 9; whi`Z:~  
23Nw!6S  
public static void sort(int[] data) { ;\14b?TUH  
sort(data, IMPROVED_QUICK); |wH5sjT  
} ,*7 (%k^`  
private static String[] name={ :lf+W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rA%usaW  
}; -o $QS,  
'}B+r@YCN  
private static Sort[] impl=new Sort[]{ Q9Kve3u-i  
new InsertSort(), v(ZYS']d2  
new BubbleSort(), tjdaaN#,V  
new SelectionSort(), L?WFm n  
new ShellSort(), gG*X^Uo  
new QuickSort(), ZWc]$H?  
new ImprovedQuickSort(), ykV 5  
new MergeSort(), 05b_)&4R  
new ImprovedMergeSort(), A v2 08}Y  
new HeapSort() "1 L$|  
}; G(p`1~xm  
Wu[&Wv~  
public static String toString(int algorithm){ { g/0x,-Z  
return name[algorithm-1]; /v- 6WSN  
} }\\KYyjY  
_'{_gei_P  
public static void sort(int[] data, int algorithm) { amOnqH-(  
impl[algorithm-1].sort(data); :,'wVS8"]  
} :6vm+5!  
KH(%?  
public static interface Sort { 2jR r,Nl  
public void sort(int[] data); /OLFcxEWh  
} cx&>#8s&  
}o(zj=7  
public static void swap(int[] data, int i, int j) { MvK !u  
int temp = data; PIu1+k.r?  
data = data[j]; %s|}Fz->  
data[j] = temp; 5=v}W:^v.  
} RS)tO0  
} '98VYCL  
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