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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。 yi*)g0M  
插入排序: 4E]w4BG)  
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package org.rut.util.algorithm.support; Zyxr#:Qm  
o-\ K]  
import org.rut.util.algorithm.SortUtil; . (G9mZFV  
/** Rhh5r0 \5  
* @author treeroot ||3%REliC  
* @since 2006-2-2 !'uL  
* @version 1.0 `%}SK~<R  
*/ i356m9j  
public class InsertSort implements SortUtil.Sort{ ;Z|X` <6g  
7Y T%.ID  
/* (non-Javadoc) yq+'O&+   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bb}zn'xC  
*/ =W'a6)WE  
public void sort(int[] data) { 'fO[f}oa_.  
int temp; Ik2y If5d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y}5V3)P  
} |}s)Wo  
} eMyh&@7(F  
} .lnyn|MVb  
S]&f+g}&w  
}  SyFw  
y J*`OU#  
冒泡排序: 7(cRm$)L  
1!_$HA  
package org.rut.util.algorithm.support; !$N^Ak5#  
{`,dWjy{%  
import org.rut.util.algorithm.SortUtil; F N6 GV  
,:POo^!/fT  
/** ) =-$>75Z  
* @author treeroot t}L kl(  
* @since 2006-2-2 4FURm@C6  
* @version 1.0 ;hb;%<xqT  
*/ e;L++D  
public class BubbleSort implements SortUtil.Sort{ Vg'vL[Y  
ZXV_Dc   
/* (non-Javadoc) 5{nERKaPf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F]]1>w*/0  
*/ xUl=N   
public void sort(int[] data) { &#!5I;3EN  
int temp; EH{m~x[Ei  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0Oy.&C T  
if(data[j] SortUtil.swap(data,j,j-1); |Iei!jm  
} "ee:Z_Sz  
} ybLl[K(D=  
} hG~4i:p <  
} d-/{@   
3z7SK Gy  
} ;f,`T  
0#1hkJ"  
选择排序: M)4-eo  
~q]@Jp  
package org.rut.util.algorithm.support; _9yb5_  
QOXG:?v\  
import org.rut.util.algorithm.SortUtil; q?} /q  
NG3!09eY  
/** }e$^v*16  
* @author treeroot .*\TG/x  
* @since 2006-2-2 .Z%y16)T  
* @version 1.0 'fpm] *ig  
*/ Y'-@O"pK  
public class SelectionSort implements SortUtil.Sort { u5D@,wSNz  
oz3N 8^M  
/* OpFe=1Q  
* (non-Javadoc) ,:6gp3  
* S -$ L2N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C \"nlNKw  
*/ )F _vWbg  
public void sort(int[] data) { WUOoK$I~K  
int temp; wEd+Ds]$  
for (int i = 0; i < data.length; i++) { a#3+PB #  
int lowIndex = i; Ws;S=|9,7~  
for (int j = data.length - 1; j > i; j--) { (gW#T\Eln  
if (data[j] < data[lowIndex]) { wW2b?b{*Z  
lowIndex = j; ,U`:IP/L  
} ^h wF=  
} =' %r"_`}  
SortUtil.swap(data,i,lowIndex); \j C[|LM&  
} 0 D^d-R,  
} fny|^F]w  
BK>3rjXi>a  
} %f[0&)1!.v  
B=dF\.&Z  
Shell排序: z+3G zDLy  
HURr k~[  
package org.rut.util.algorithm.support; h8 Wv t's  
^a+W!  
import org.rut.util.algorithm.SortUtil; k;EG28   
r?cDyQE  
/** _0HCtx ;  
* @author treeroot R1't W=  
* @since 2006-2-2 scr`] tD  
* @version 1.0 pO]{Y?X:  
*/ %[3?vX  
public class ShellSort implements SortUtil.Sort{ HC1jN8WDY  
2ed4xh V  
/* (non-Javadoc) /%qw-v9qPV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R<\5 q%@G  
*/ HJ5 Ktt  
public void sort(int[] data) { jnF-kia  
for(int i=data.length/2;i>2;i/=2){ !9 7U2L4  
for(int j=0;j insertSort(data,j,i); ^YVd^<cE  
} wWq(|"  
} X8(H#Ef[  
insertSort(data,0,1); W=QT-4  
} {T;A50  
5&Y%N(  
/** S"-q*!AhK  
* @param data D1xIRyc/  
* @param j k@}?!V*l  
* @param i dP[vXhc  
*/ 0EWov~Y?  
private void insertSort(int[] data, int start, int inc) { 6Bv!t2  
int temp; lI,lR  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }G{'Rb  
} W^(:\IvV  
} SynL%Y9)|,  
} w_gFN%8  
%P3|#0yg0  
} yT3q~#:  
9^yf'9S1  
快速排序: a"ct"g=  
D./!/>@f  
package org.rut.util.algorithm.support; rN$U%\.I  
*U<l$gajq  
import org.rut.util.algorithm.SortUtil; $!?tJ@{  
Kp]\r-5UD>  
/** z2.9l?"rfQ  
* @author treeroot %#AM }MWIa  
* @since 2006-2-2 Ai*R%#  
* @version 1.0 adCTo  
*/ "c+j2f'f  
public class QuickSort implements SortUtil.Sort{ -'!K("  
$m hIX A.  
/* (non-Javadoc) 62-,!N 1-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *|Bu7nwg  
*/ !sTOo  
public void sort(int[] data) { W't?aj I|  
quickSort(data,0,data.length-1); 0fOx&"UAB  
} DfPC@` k  
private void quickSort(int[] data,int i,int j){ h4iz(*  
int pivotIndex=(i+j)/2; Y5dt/8Jo  
file://swap \OzPDN  
SortUtil.swap(data,pivotIndex,j); [ClDKswq  
2`Dqu"TWh  
int k=partition(data,i-1,j,data[j]); yuef84~  
SortUtil.swap(data,k,j); E%.w6-  
if((k-i)>1) quickSort(data,i,k-1); o$4i{BL  
if((j-k)>1) quickSort(data,k+1,j); " Y1]6 Zu  
wI0NotC  
} sY- ] Q  
/** T"bH{|:%*=  
* @param data bmid;X|  
* @param i r 9~Wh $  
* @param j o[A y2"e?  
* @return {M_*hR;lL  
*/ og?>Q i Tr  
private int partition(int[] data, int l, int r,int pivot) { #7*{ $v  
do{ $.5f-vQp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c4Leh"ry  
SortUtil.swap(data,l,r); :cE6-Fv  
} )qID<j#  
while(l SortUtil.swap(data,l,r); e=H,|)P  
return l; 8h?):e  
} ~dtS  
HL`=zB%  
} :-[y`/R  
|_h$}~ ;  
改进后的快速排序: qH=<8Iu  
)01,3J>#  
package org.rut.util.algorithm.support; ^ UDNp.6k  
u4KP;_,m  
import org.rut.util.algorithm.SortUtil; #$dEg  
m)1+D"z  
/** f{HjM? Mb3  
* @author treeroot S - N [  
* @since 2006-2-2 o5(~nQ  
* @version 1.0 i"_@iN0N  
*/ \@8.BCWK  
public class ImprovedQuickSort implements SortUtil.Sort { m) q e  
zbL8 pp  
private static int MAX_STACK_SIZE=4096; Iq?#kV9)  
private static int THRESHOLD=10; qlU"v)Mx  
/* (non-Javadoc) /19ZyQw9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]?<=DHn  
*/ 6OPYq*|  
public void sort(int[] data) { ,_iR  
int[] stack=new int[MAX_STACK_SIZE]; >^Z==1  
F,.dC&B  
int top=-1; x|=]Xxco  
int pivot; J1\H^gyW)  
int pivotIndex,l,r; uD0<|At/  
i]{-KZC  
stack[++top]=0; w9aLTLv-  
stack[++top]=data.length-1; =jWjUkm2  
+EOd9.X\~  
while(top>0){ }od5kK;  
int j=stack[top--]; ' X9D(?O  
int i=stack[top--];  %>z)Q  
l h]Q\  
pivotIndex=(i+j)/2; -tH^Deo  
pivot=data[pivotIndex]; GF/!@N  
Vb++K0CK  
SortUtil.swap(data,pivotIndex,j); +FBUB  
"q]r{0  
file://partition L#~z#  
l=i-1; w|G4c^KH  
r=j; 4Q?3gA1  
do{ ?.~hex#M@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V"u .u  
SortUtil.swap(data,l,r); ,3,(/%=k  
} (X?et &  
while(l SortUtil.swap(data,l,r); 3$n O@rOS  
SortUtil.swap(data,l,j); aWk1D.  
>"|"Gy (  
if((l-i)>THRESHOLD){ ^fqco9^;  
stack[++top]=i; 2'-!9!C  
stack[++top]=l-1; sKniqWi  
} x@Ze%$'  
if((j-l)>THRESHOLD){ '\wZKY VN  
stack[++top]=l+1; *1b1phh0/  
stack[++top]=j; Naa "^  
} d) $B  
g5[r!XO  
} B(ZK\]  
file://new InsertSort().sort(data); 5)=YTUCk  
insertSort(data); XNaiMpp'  
} ><DXT nt'x  
/** >0AVs6&;v  
* @param data +6;1.5Tc  
*/ 3q)y;T\yW  
private void insertSort(int[] data) { ++|vy~T  
int temp; XdV(=PS!a@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D=_FrEM_IA  
} ^77X?nDz=h  
} %|o2d&i  
} 5`A^"}0  
5-B %08T  
} %<yH6h*u  
}HLV'^"k  
归并排序: )Q5ja}-{V  
| HfN<4NL  
package org.rut.util.algorithm.support; eZv G  
uD8,E!\  
import org.rut.util.algorithm.SortUtil; %$ ^ eY'-'  
Jf3xK"in  
/** <c_'(   
* @author treeroot SUaXm#9  
* @since 2006-2-2 A[8vD</}_  
* @version 1.0 i}e4P>ADD  
*/ !McRtxq?~  
public class MergeSort implements SortUtil.Sort{ `Qxdb1>mjY  
.?dYY;P  
/* (non-Javadoc) vcz?;lg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0UN65JBuD  
*/ %(d0`9  
public void sort(int[] data) { K0-AP $  
int[] temp=new int[data.length]; 8I)}c1j`v  
mergeSort(data,temp,0,data.length-1); i7|sVz=  
} >,A&(\rO  
e;r?g67  
private void mergeSort(int[] data,int[] temp,int l,int r){ (>M@Ukam:  
int mid=(l+r)/2; sV$Zf `X)  
if(l==r) return ; lCxPR'C|  
mergeSort(data,temp,l,mid); 4VI'd|Ed  
mergeSort(data,temp,mid+1,r); *'\ xlsp#  
for(int i=l;i<=r;i++){ Tq,xW  
temp=data; "Cn<x\E b  
} o`%;*tx  
int i1=l; B nu5\P  
int i2=mid+1; )^[PW&=W|x  
for(int cur=l;cur<=r;cur++){ =q"o%dc`R  
if(i1==mid+1) _d*QA{  
data[cur]=temp[i2++]; jrLV\(p  
else if(i2>r) ^#p+#_*V  
data[cur]=temp[i1++]; K<~J*k<v  
else if(temp[i1] data[cur]=temp[i1++]; ^/:G`'  
else 4fgYO]  
data[cur]=temp[i2++]; %=<Kb\  
} 5"^Z7+6  
} [`_-;/Gx2  
uK5 C-  
} E0_S+`o2y  
i564<1`x  
改进后的归并排序: h:~ 8WV|  
Q/y"W,H#  
package org.rut.util.algorithm.support; ]v|n'D-?  
^M7pCetjdW  
import org.rut.util.algorithm.SortUtil; Q'R*a(pm  
K/IG6s;Xj  
/**  zPW_  
* @author treeroot QvvH/u  
* @since 2006-2-2 V)#rP?Y  
* @version 1.0 L3|~ i&k  
*/ #:M <<gk  
public class ImprovedMergeSort implements SortUtil.Sort { D?`|`Mu  
!6pE0(V^+4  
private static final int THRESHOLD = 10; L`n Ma   
bY!1t}ALh  
/* L)-1( e<x  
* (non-Javadoc) TV[@!E a  
* G Q])y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<$z-y'  
*/  ;)ji3M  
public void sort(int[] data) { DWmViuZmL  
int[] temp=new int[data.length]; "C'T>^qw*  
mergeSort(data,temp,0,data.length-1); u3])_oj=  
} ~=i<O&nai  
@; 0t+  
private void mergeSort(int[] data, int[] temp, int l, int r) { !r %u@[(  
int i, j, k; ~%Xs"R1c ,  
int mid = (l + r) / 2; L2`a| T=  
if (l == r) 7>!Rg~M  
return; l2 mO{'|C  
if ((mid - l) >= THRESHOLD) dH_g:ocA  
mergeSort(data, temp, l, mid); 3}gf %U]L  
else g#s hd~e  
insertSort(data, l, mid - l + 1); CCp&+LRvR  
if ((r - mid) > THRESHOLD) ql2O%B.6?  
mergeSort(data, temp, mid + 1, r); *Fu;sR2y%:  
else la{Iqm{i  
insertSort(data, mid + 1, r - mid); GPLq$^AH  
>A ?{cbJ  
for (i = l; i <= mid; i++) { &N:`Rler  
temp = data; NhF<2[mt  
} .V.ga2+  
for (j = 1; j <= r - mid; j++) { M\6u4p!G!  
temp[r - j + 1] = data[j + mid]; -EIfuh  
} a1 .+L  
int a = temp[l]; LR Dj!{k{  
int b = temp[r]; ' i<}/l  
for (i = l, j = r, k = l; k <= r; k++) { qJq!0F  
if (a < b) { <EM'|IR?  
data[k] = temp[i++]; 1 ILA Utf)  
a = temp; ix!4s613w  
} else { Z[G:  
data[k] = temp[j--]; (M nK \^Y  
b = temp[j]; qfa[KD)!aB  
} o7 1f<&1  
} M TOZ:b  
} *wu|(t_ A  
C[s='v~}  
/** C*&FApG  
* @param data S?e*<s9k  
* @param l 'm|PSwB7  
* @param i z\r29IRh  
*/ =x5k5NIF  
private void insertSort(int[] data, int start, int len) { SJ).L.Cm6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (ioJ G-2u  
} _ m<@ou7  
} q^^&nz<A  
} `VD7VX,rp*  
} l$DQkbOj  
R~H+.Vh  
堆排序: \Ws$@ J-M  
z,IUCNgM  
package org.rut.util.algorithm.support; H:!pFj  
4$MV]ldUI  
import org.rut.util.algorithm.SortUtil; ,@r 0-gL  
'q, L*  
/** !B:wzb_  
* @author treeroot +MvO+\/  
* @since 2006-2-2 Rn5{s3?F~2  
* @version 1.0  YW'l),Z  
*/ {LoNp0i1a  
public class HeapSort implements SortUtil.Sort{ *4?%Y8;bF6  
-,^Z5N#\|  
/* (non-Javadoc) $@@@</VbP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -cL wjI  
*/ L2{b~`UvP  
public void sort(int[] data) { @r9[&  
MaxHeap h=new MaxHeap(); GRj#1OqL  
h.init(data); 6<m9guv  
for(int i=0;i h.remove(); 08F~6e6a8  
System.arraycopy(h.queue,1,data,0,data.length); I6RF;m:Jw  
} tde&w=ec  
F%`O$uXA  
private static class MaxHeap{ TDZ p1zpXb  
DA9f\q   
void init(int[] data){ 26[m7\O  
this.queue=new int[data.length+1]; ;QqC c!b  
for(int i=0;i queue[++size]=data; akV-|v_  
fixUp(size); JHCXUT-r{  
} dz=pL$C  
} meArS*d  
;Wedj\Kkp  
private int size=0; ]/c!;z  
734<X6^1  
private int[] queue; c);vl%  
V6 uh'2  
public int get() { L#Rj~&U  
return queue[1]; 84f^==Y  
} R&FO-{S  
`<IaQY  
public void remove() { 5"2pU{xmK  
SortUtil.swap(queue,1,size--); a}5/?/  
fixDown(1); VkZ3Q7d  
}  re@;6o  
file://fixdown EN;4EC7tE  
private void fixDown(int k) { :XCRKRDLE  
int j; eh}I?:(a?  
while ((j = k << 1) <= size) { cs7K^D;.V  
if (j < size %26amp;%26amp; queue[j] j++; G}#p4 \/  
if (queue[k]>queue[j]) file://不用交换 :[!b";pR  
break; ]Ia}H+&  
SortUtil.swap(queue,j,k); C1po]Ott*  
k = j; [J +5  
} MD>xRs   
} 'l6SL- <  
private void fixUp(int k) { z\c$$+t  
while (k > 1) { VJOB+CKE  
int j = k >> 1; Y20T$5{#  
if (queue[j]>queue[k]) ]qO*(m:}o  
break; OSIf>1  
SortUtil.swap(queue,j,k); t 4>\ ;  
k = j; %eW2w@8]  
} ^17i98w  
} 't'2z  
o>e-M  
} yt1dYF0Xq  
Q+; N(\  
} oN&U@N/>aU  
L)9uBdF  
SortUtil: ((T6z$:hA  
bEli!N$  
package org.rut.util.algorithm; #@}wl  
\vF*n Z5/  
import org.rut.util.algorithm.support.BubbleSort; aqKrf(Rv  
import org.rut.util.algorithm.support.HeapSort; rHJtNN8$k  
import org.rut.util.algorithm.support.ImprovedMergeSort; (Z?g^kjq)  
import org.rut.util.algorithm.support.ImprovedQuickSort; Dgm"1+  
import org.rut.util.algorithm.support.InsertSort; (gjCm0#_%  
import org.rut.util.algorithm.support.MergeSort; h1Logm+m  
import org.rut.util.algorithm.support.QuickSort; O>[B"mM t  
import org.rut.util.algorithm.support.SelectionSort; Z!*k0 <Z  
import org.rut.util.algorithm.support.ShellSort; UX@8  
FC#t}4as  
/** 37 d-!  
* @author treeroot j71RlS73  
* @since 2006-2-2 gIY]hC.  
* @version 1.0 8DcIM(;Z  
*/ _`+2e-  
public class SortUtil { A75z/O{  
public final static int INSERT = 1; *_/n$& I%&  
public final static int BUBBLE = 2; F~wqt7*  
public final static int SELECTION = 3; Pv3qN{265  
public final static int SHELL = 4; Nbd[xs-lw  
public final static int QUICK = 5; sDP8!  
public final static int IMPROVED_QUICK = 6; } bm ^`QY  
public final static int MERGE = 7; .wf$]oQQ  
public final static int IMPROVED_MERGE = 8; =&#t ("  
public final static int HEAP = 9; 5q _n 69b  
r Fhi:uRV  
public static void sort(int[] data) { Cp^`-=r+  
sort(data, IMPROVED_QUICK); m(CAXq-t  
} W3w$nV  
private static String[] name={ 1)J' pDa  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y} crE/  
}; \ k &ZA  
T0"q,lrdxV  
private static Sort[] impl=new Sort[]{ %OJq(}  
new InsertSort(), MQq!<?/  
new BubbleSort(), 2 sK\.yS  
new SelectionSort(), <8BNqbX  
new ShellSort(), %:yVjb,Yf  
new QuickSort(), Vu;z|L  
new ImprovedQuickSort(), gfQ1p?  
new MergeSort(), ?b xa k  
new ImprovedMergeSort(), >;+q,U}  
new HeapSort() ] D+'Ao^'  
}; `ZGKM>q`  
T[%@B"  
public static String toString(int algorithm){ E^? 3P'%^  
return name[algorithm-1]; L16">,5  
} vQmqYyOc2  
$Go)Zs-bL?  
public static void sort(int[] data, int algorithm) { {!xDJnF;  
impl[algorithm-1].sort(data); `gz/?q  
} _:+ k|I  
lf}%^od~6  
public static interface Sort { FQM9>l@6)>  
public void sort(int[] data); jf=\\*64r4  
} "z4V@gk   
zXML<?w  
public static void swap(int[] data, int i, int j) { Ir6g"kwCKq  
int temp = data; 8K2=WYN  
data = data[j]; Le*gdoW.  
data[j] = temp; LTcZdQd$  
} Vr hd\  
} |nmt /[  
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