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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。 Yc5<Y-W  
插入排序: RN$q,f[#  
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package org.rut.util.algorithm.support; p  ~)\!  
KVHK~Y-G  
import org.rut.util.algorithm.SortUtil; 1pqYB]*u_  
/** X*a7`aL  
* @author treeroot $#_^uWN-M  
* @since 2006-2-2 iZ0.rcQj'o  
* @version 1.0 KP!7hJhw  
*/  nyZ?m  
public class InsertSort implements SortUtil.Sort{ 'i;ofJ[.c  
o3`0x9{  
/* (non-Javadoc) @"iNjqxh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z'zC  
*/ r#d]"3tH  
public void sort(int[] data) { Xy9'JVV6  
int temp; 7'5/T]Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d;a"rq@a)  
} 7o-}86x#  
} J?Rp  
} Up>,~bs]  
#+^l3h MK  
} )5TX3#=;(G  
(A;HB@)[A  
冒泡排序: mG%cE(j*D  
[n +(  
package org.rut.util.algorithm.support; cGW L'r)P  
{XW>3 "  
import org.rut.util.algorithm.SortUtil; 7N0m7SC  
#Z]<E6<=9  
/** vIFx'S~D  
* @author treeroot 3ep L'My$  
* @since 2006-2-2 z]sQ3"cmX  
* @version 1.0 ktv{-WG2_  
*/ fVZ_*'v  
public class BubbleSort implements SortUtil.Sort{ th=45y"C  
hG3RZN#ejq  
/* (non-Javadoc) <4;f?e u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `U;V-  
*/ i k0w\*  
public void sort(int[] data) { ^1ks`1  
int temp; 6,]2;'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ mW)"~sA  
if(data[j] SortUtil.swap(data,j,j-1); C |rl",&  
} w$Mb+b$  
} $'lJ_ jL  
} K$M,d - `b  
} & aF'IJC  
-Q!?=JNtQ  
} ezd@>(hJ  
Kw>gg  
选择排序: E} ]SGU"  
qche7kg!a  
package org.rut.util.algorithm.support; tI2p-d9B  
Pv@;)s(-  
import org.rut.util.algorithm.SortUtil;  *8 ]  
U9AtC.IG!  
/** Bc#6mO-  
* @author treeroot +Jc-9Ko\c;  
* @since 2006-2-2 '`p0T%w  
* @version 1.0 vaZ?>94  
*/ BimM)4g  
public class SelectionSort implements SortUtil.Sort { a[gN+DX%L  
|nO }YU\E  
/* I q47^  
* (non-Javadoc) D7$xY\0r  
* ;<`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3lNw*M|")  
*/ uMP&.Y(  
public void sort(int[] data) { L^nS%lm  
int temp; Xg97[I8/  
for (int i = 0; i < data.length; i++) { < YuI}d~'  
int lowIndex = i; \y/+H  
for (int j = data.length - 1; j > i; j--) { W/;qMP1"-  
if (data[j] < data[lowIndex]) { "( ?[$R  
lowIndex = j; wT\dzp>/  
} F^');8~L  
} @yjui  
SortUtil.swap(data,i,lowIndex); ;Y16I#?;Kh  
} t,;b*ZR  
}  Ia)^  
*$>$O%   
} s[@@INU  
*-9b!>5eD  
Shell排序: n1c Q#u  
M, UYDZ',  
package org.rut.util.algorithm.support; O4 Y;  
jNseD  
import org.rut.util.algorithm.SortUtil; YJwz*@l  
__||cQ  
/** BcoE&I?[m|  
* @author treeroot <kor;exeJ  
* @since 2006-2-2 %u|qAF2uS  
* @version 1.0 ~LzTqMHM  
*/ >:P3j<xTv  
public class ShellSort implements SortUtil.Sort{ RwwX;I"o%  
:Zd# }P  
/* (non-Javadoc) ^SRa!8z$W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1vxh3KS.  
*/ (.3L'+F  
public void sort(int[] data) {  ?hpk)Qu  
for(int i=data.length/2;i>2;i/=2){ XC{(O:EG  
for(int j=0;j insertSort(data,j,i); }c,}+{q  
} AuYi$?8|5  
} 'C*NyHc  
insertSort(data,0,1); -/&6}lD  
} IA;KEGJ  
mwTn}h3N  
/** >Y< y]vM:  
* @param data Onoi6^G  
* @param j ^q$vyY   
* @param i Jq`fD~(7  
*/ V1;Qt-i  
private void insertSort(int[] data, int start, int inc) { 7+u%]D!  
int temp; OiY2l;68  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j|(bDa4\  
} ArU>./)Q  
} BmUzsfD  
} Xl*-A|:j  
|qNrj~n@  
} LGCL*Qbsg  
_?_Svx2  
快速排序: <FK7Rz:4T  
0+:.9*g=k  
package org.rut.util.algorithm.support; ^NLKX5Q  
x{*!"a>  
import org.rut.util.algorithm.SortUtil; [l5 "'{x  
?\F,}e  
/** qkUr5^1  
* @author treeroot @+X}O /74  
* @since 2006-2-2 c)E[K-u  
* @version 1.0 I}v'n{5(  
*/ j)IK  
public class QuickSort implements SortUtil.Sort{ n7q-)Dv_U  
L}a3!33)C  
/* (non-Javadoc) IL:"]`f*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,em6wIq,  
*/ pr0V)C6  
public void sort(int[] data) { t1Khf  
quickSort(data,0,data.length-1); FvI`S>  
} FVQWz[N  
private void quickSort(int[] data,int i,int j){ %#QFu/l  
int pivotIndex=(i+j)/2; mQs'2Y6Oa  
file://swap JcVq%~ {M  
SortUtil.swap(data,pivotIndex,j); HIa$0g0J  
q=1SP@;\6  
int k=partition(data,i-1,j,data[j]); MthThsr7  
SortUtil.swap(data,k,j); 47K5[R  
if((k-i)>1) quickSort(data,i,k-1); V!U[N.&$  
if((j-k)>1) quickSort(data,k+1,j); lIFU7g  
G[>-@9_b  
} /l$noaskX  
/** Z|?XQ-R5  
* @param data Ju9v n44  
* @param i ^:)&KV8D|  
* @param j ]VYl Eqe  
* @return -% f DfjP  
*/  B-gr2-  
private int partition(int[] data, int l, int r,int pivot) { 3MzY]J y(  
do{ &s<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [sk"2  
SortUtil.swap(data,l,r); _gGy(`  
} Rt:PW}rFf  
while(l SortUtil.swap(data,l,r); GKd>AP_  
return l; 6~/H#8Kdn  
} KnFbRhu[  
#EM'=Q%TO  
} G<dXJ ]\\  
#dfW1@m  
改进后的快速排序: er#=xqUY  
X0$_KPn  
package org.rut.util.algorithm.support; Go67VqJr  
T+ t-0k  
import org.rut.util.algorithm.SortUtil; L wu;y@[  
z*[Z:  
/** j{Fo 6##  
* @author treeroot 4#YklVm  
* @since 2006-2-2 si;]C~X*  
* @version 1.0 DJW1kR  
*/ I.<#t(io  
public class ImprovedQuickSort implements SortUtil.Sort { ;hZ@C!S:  
\~H"!vj  
private static int MAX_STACK_SIZE=4096; :ZIcWIV-  
private static int THRESHOLD=10; QE}@|H9xs  
/* (non-Javadoc) '} kq@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;i#gk%- 2  
*/ O&s6blD11  
public void sort(int[] data) { X>6a@$MxP  
int[] stack=new int[MAX_STACK_SIZE]; _# F'rl6'  
F3'X  
int top=-1; qpeK><o  
int pivot; t;1NzI$^  
int pivotIndex,l,r; ~GeYB6F  
,'673PR  
stack[++top]=0; t}FMBG o[  
stack[++top]=data.length-1; +J4t0x  
 k WtUj  
while(top>0){ >dl!Ep  
int j=stack[top--]; bcs!4  
int i=stack[top--]; ~z}au"k  
!T{g& f  
pivotIndex=(i+j)/2; Wd}mC<rv1  
pivot=data[pivotIndex]; )pLq^j  
e`rY]X  
SortUtil.swap(data,pivotIndex,j); RVsNr rZ  
yi?&^nX@9,  
file://partition 7a<qP=J  
l=i-1; N [u Xo  
r=j; *^uj(8U  
do{ &F}+U#H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zef,*dQY   
SortUtil.swap(data,l,r); & B4U)  
} w3Ohm7N[  
while(l SortUtil.swap(data,l,r); _2Z3?/Y  
SortUtil.swap(data,l,j); +*DX(v"BH  
3$cF)5Vf  
if((l-i)>THRESHOLD){ -DnK )u\@  
stack[++top]=i; gsp 7N  
stack[++top]=l-1; OQQ9R?Ll{  
} ftPw6  
if((j-l)>THRESHOLD){ QA(,K}z~^S  
stack[++top]=l+1; Sv@p!-m  
stack[++top]=j; h'x~"k1  
} ^!qmlx*  
0)]1)z(P  
} kk'w@Sn.(  
file://new InsertSort().sort(data); Q2NnpsA^6  
insertSort(data); 's?Fip  
} `RcNqPY#S  
/** RX1{?*r]Z  
* @param data JY+[  
*/ sJ/e=1*  
private void insertSort(int[] data) { }j1Zk4}[x  
int temp; 03o3[g?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0?xiGSZV  
} vWH>k+9&X  
} ^BX@0"&-  
} `yZZP   
NR&9:?  
} *"\Q ~#W  
BfT,  
归并排序: 8 8$ Y-g5*  
uFWgq::\  
package org.rut.util.algorithm.support; Dj+Osh  
&>l8SlC?  
import org.rut.util.algorithm.SortUtil; ef;L|b%pp  
jPNfLwVkl:  
/** N08n/u&cr,  
* @author treeroot 8$kXC+  
* @since 2006-2-2 fNPj8\#V,  
* @version 1.0 EiN)TB^]  
*/ w WU_?Dr_~  
public class MergeSort implements SortUtil.Sort{ znO00qX  
dt+  4$  
/* (non-Javadoc) nln6:^w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S "Pj 1  
*/ wPJRp]FA  
public void sort(int[] data) { Z3>xpw G  
int[] temp=new int[data.length]; ~+egu89'TU  
mergeSort(data,temp,0,data.length-1); vqOLSE"t*O  
} ~!F4JRf  
5I1J)K;  
private void mergeSort(int[] data,int[] temp,int l,int r){ [?@wCY4=  
int mid=(l+r)/2; BkxhF  
if(l==r) return ; Bq]O &>\hX  
mergeSort(data,temp,l,mid); D(6x'</>?  
mergeSort(data,temp,mid+1,r); }~r6>7I  
for(int i=l;i<=r;i++){ X,+}syK  
temp=data; j(C UYm  
} KR(} A"  
int i1=l; !muYn-4M  
int i2=mid+1; uyt-q|83=  
for(int cur=l;cur<=r;cur++){ :wZ`>,K"t>  
if(i1==mid+1) B"9hQb  
data[cur]=temp[i2++]; chmJ|  
else if(i2>r) j& iL5J;  
data[cur]=temp[i1++]; Q@wq }vc!  
else if(temp[i1] data[cur]=temp[i1++]; .00=U;H%`  
else Jav2A6a  
data[cur]=temp[i2++]; RIEv*2_O  
} pEj^x[b`^  
} pptM &Y  
6//FZ:q  
} 7E3SvC|M  
qf`xH"$  
改进后的归并排序: p <=%  
!NLvo_[Y  
package org.rut.util.algorithm.support; E97+GJ3  
h<1dTl*  
import org.rut.util.algorithm.SortUtil; $7&l6~sMQ  
~po%GoH(K  
/** Va Yu%  
* @author treeroot &^n> ZY,  
* @since 2006-2-2 NTXL>Q*e  
* @version 1.0 nH>V Da  
*/ uy _i{Y|  
public class ImprovedMergeSort implements SortUtil.Sort { VNrO(j DUv  
rgdQR^!l6  
private static final int THRESHOLD = 10; cYM~IA  
RC{Z)M{~  
/* aXbNDj ][  
* (non-Javadoc) B UQn+;be  
* W0MnGzZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 04guud }  
*/ 2Uv3_i<  
public void sort(int[] data) { (vAv^A*i}  
int[] temp=new int[data.length]; Ivt} o_b*  
mergeSort(data,temp,0,data.length-1); L> Oy7w)Y  
} gJ5wAK+?  
2PR7M.V 7  
private void mergeSort(int[] data, int[] temp, int l, int r) { >mFX^t_,  
int i, j, k; x`+ l#  
int mid = (l + r) / 2; AuDR |;i  
if (l == r) >=~Fo)V!(V  
return; mKq<'t]^k  
if ((mid - l) >= THRESHOLD) dxn0HXU  
mergeSort(data, temp, l, mid); qE`:b0FT  
else gJPDNZ*6pk  
insertSort(data, l, mid - l + 1); PM-PP8h  
if ((r - mid) > THRESHOLD) Q6.*"`  
mergeSort(data, temp, mid + 1, r); qTTn51  
else <F)w=_%&  
insertSort(data, mid + 1, r - mid); K)Zkj"y  
1rv$?=Z  
for (i = l; i <= mid; i++) { ,.oa,sku  
temp = data; o'^;tLs15  
} WHgV_o 8  
for (j = 1; j <= r - mid; j++) { q)?p$\  
temp[r - j + 1] = data[j + mid]; O+o;aa6  
} 4aN+}TkH@G  
int a = temp[l]; P#[IUXtT  
int b = temp[r]; 4Hml.|$  
for (i = l, j = r, k = l; k <= r; k++) { 'G l;Ir^  
if (a < b) { 0Q$~k  
data[k] = temp[i++]; 'je8k7`VA  
a = temp; ] ^; b  
} else { B9LSxB  
data[k] = temp[j--]; ]M~8 @K  
b = temp[j]; *f`s%&Y]s  
} i0'Xy>l  
} U+.PuC[3  
} .>kccLr:z  
a: yB%:2  
/** XhE$&Ff  
* @param data abICoP1zQ  
* @param l K}PvrcO1  
* @param i rT flk  
*/ (F,(]71Z+  
private void insertSort(int[] data, int start, int len) { L2CW'Hd  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gg}5$||^C  
} p;qRm} 0}  
} gH i~nEH  
} N b3I%r  
} ZI58XS+  
DYo<5^0  
堆排序:  n5bXQ  
#)_J)/h  
package org.rut.util.algorithm.support; _8[UtZYG  
^e?$ ]JiA!  
import org.rut.util.algorithm.SortUtil; F2bm+0vOJ  
X)Dqeb6  
/** UsLh)#}h  
* @author treeroot "JzfL(yt  
* @since 2006-2-2 /&D'V_Q`*  
* @version 1.0 rDIhpT)a  
*/ K08 iPIkQ  
public class HeapSort implements SortUtil.Sort{ Cq?',QU6j  
_YH<YOrMh  
/* (non-Javadoc) #0P!xZ'|{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2f3=?YqD  
*/ v7 8&[  
public void sort(int[] data) { *>e~_{F  
MaxHeap h=new MaxHeap(); |x d@M-ln  
h.init(data); j:HH#U  
for(int i=0;i h.remove(); A$7Eo`Of  
System.arraycopy(h.queue,1,data,0,data.length); Lzh9DYU6  
} <Zig Co w  
M[h 1>}$Lz  
private static class MaxHeap{ ,^.S0;D,Z  
s8t f@H4r  
void init(int[] data){ 5 R,la\!bQ  
this.queue=new int[data.length+1]; h`?y2?O  
for(int i=0;i queue[++size]=data; E7rX1YdR  
fixUp(size); o-SRSu  
} C!!mOAhJ  
} H9%l?r5  
*I:mw8t  
private int size=0; )UR1E?'  
J#6LSD@ (O  
private int[] queue; n&_YYEHx  
QjQ4Z'.r>  
public int get() { |yLk5e~@-  
return queue[1]; i[^k.W3gf  
} 1KW3l<v-6  
HR[Q ?rg  
public void remove() { 'Z\{D*=V8  
SortUtil.swap(queue,1,size--); .r~'(g{qt  
fixDown(1); TT|-aS0l(u  
} ob0~VEH-  
file://fixdown LkaG8#m1R  
private void fixDown(int k) { M$,Jg5Dc  
int j; davvI$TA  
while ((j = k << 1) <= size) { k?^%hO>[  
if (j < size %26amp;%26amp; queue[j] j++; ,q8(]n 4  
if (queue[k]>queue[j]) file://不用交换 (-bRj#  
break; N\_( w:q  
SortUtil.swap(queue,j,k); "3@KRb4f  
k = j; 9n_ eCb)H  
} XK1fHfCEa  
} 7k 3p'FeS  
private void fixUp(int k) { G-2EQ.  
while (k > 1) { DZJ eup?Z  
int j = k >> 1; (F_w>w.h  
if (queue[j]>queue[k]) Tc:sldtCk  
break; q;p.wEbr4U  
SortUtil.swap(queue,j,k); rW[SU:  
k = j; 'yE*|Sx  
} `/c7h16  
} = Q@6c   
PM@XtL7J  
} j\! e9M  
f](I.lm:  
} !0b%Jh  
?4:rP@  
SortUtil: 6%>/og\%  
_~ v-:w  
package org.rut.util.algorithm; w-lrnjs  
Cq gJ  
import org.rut.util.algorithm.support.BubbleSort; yP x\ltG3  
import org.rut.util.algorithm.support.HeapSort; 2.]~*7   
import org.rut.util.algorithm.support.ImprovedMergeSort; P!5Z]+B#  
import org.rut.util.algorithm.support.ImprovedQuickSort; AQ-mE9>P  
import org.rut.util.algorithm.support.InsertSort; ^ b@!dS  
import org.rut.util.algorithm.support.MergeSort; /n(9&'H<  
import org.rut.util.algorithm.support.QuickSort; Pow|:Lau!  
import org.rut.util.algorithm.support.SelectionSort; ,`<]>;s  
import org.rut.util.algorithm.support.ShellSort; \kxh#{$z?  
TNx_Rc}  
/** \F[n`C"Is  
* @author treeroot ?k"0w)8  
* @since 2006-2-2 T\jAk+$Jo  
* @version 1.0 mIRAS"Q!m  
*/ C}9Kx }q  
public class SortUtil { .U<F6I:<md  
public final static int INSERT = 1; C]/&vh7ta  
public final static int BUBBLE = 2; FK6K6wU52m  
public final static int SELECTION = 3; k'x #t(  
public final static int SHELL = 4; D 0  
public final static int QUICK = 5; HQl~Dh0DJ  
public final static int IMPROVED_QUICK = 6; I:nI6gF  
public final static int MERGE = 7; WI6(#8^p  
public final static int IMPROVED_MERGE = 8; zFOL(s.h|0  
public final static int HEAP = 9; !Pw$48cg  
q=njKC  
public static void sort(int[] data) { ;:U<ce=  
sort(data, IMPROVED_QUICK); O'OFz}x),  
} +Jdm #n?_  
private static String[] name={ Gp,'kw"I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :v_w!+,/  
}; x=h0Fq ,T  
4HW;  
private static Sort[] impl=new Sort[]{ )XpV u  
new InsertSort(), b9y)wBC%`  
new BubbleSort(), G,B?&gFX  
new SelectionSort(), r4EoJyt  
new ShellSort(), ~zMDY F"&  
new QuickSort(), XwtAF3oz  
new ImprovedQuickSort(), RYH)AS4w'  
new MergeSort(), \p3v#0R{  
new ImprovedMergeSort(), bGu([VB  
new HeapSort() ~U9q-/(J/  
}; 5\&]J7(  
Uh}+"h5  
public static String toString(int algorithm){ $.9 +{mz  
return name[algorithm-1]; '<W<B!HP5Z  
} !x8kB Di,  
bfhz?,b  
public static void sort(int[] data, int algorithm) { x df?nt  
impl[algorithm-1].sort(data); GoazH?%  
} "ct58Y@   
T ~h.=5  
public static interface Sort { ^( DL+r,  
public void sort(int[] data); J B(<.E 2  
} k&!6fZ)  
$7Cgo&J  
public static void swap(int[] data, int i, int j) { $,@JYLC2  
int temp = data; y`6\L$c  
data = data[j]; oJh"@6u6K  
data[j] = temp; TVYz3~m  
} i+I0k~wY  
} ZL,6_L/  
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3+5=?,请输入中文答案:八 正确答案:八