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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。 "0$a)4]  
插入排序: .nO\kgoK  
&U{#Kt5q  
package org.rut.util.algorithm.support; C/_ZUF(V  
)n1_(;  
import org.rut.util.algorithm.SortUtil; /~DI 6g  
/** q'+)t7!  
* @author treeroot u6J8"< -W  
* @since 2006-2-2 ['b}QW@Fx  
* @version 1.0 CYt?,qk-r  
*/ N' F77 .  
public class InsertSort implements SortUtil.Sort{ gBd]B03  
*tGY6=7O  
/* (non-Javadoc) *}Xf!"I#]N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Oy%a'w   
*/ f<-Jg  
public void sort(int[] data) { pLl(iNf]  
int temp; Eu0akqZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); We)xB  
} oph}5Krd)  
} PG2:~$L0  
} (|F*vP'  
'"`IC\N^  
} c& < Fr[AK  
dLH(D: `  
冒泡排序: Upx G@b  
.Q<>-3\K  
package org.rut.util.algorithm.support; "x%Htq@  
nz%DM<0$  
import org.rut.util.algorithm.SortUtil; C=-=_>Q,L<  
3W V"U  
/** zlyS}x@p  
* @author treeroot 3Nl <p"=  
* @since 2006-2-2 ( B!uy`  
* @version 1.0 <xup'n^7C  
*/ "WlZ)wyF%  
public class BubbleSort implements SortUtil.Sort{ ~cWAl,(B<F  
%Celc#v  
/* (non-Javadoc)  Ii6<b6-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rr/B= O7  
*/ XWn VgY s  
public void sort(int[] data) { 5CuuG<0  
int temp; C^s^D:   
for(int i=0;i for(int j=data.length-1;j>i;j--){ a,Sw4yJ!Q  
if(data[j] SortUtil.swap(data,j,j-1); yZAS#ko}}  
} FW.7'7G@n  
} z Eq GD2"  
} 57aXQ8u{  
} K)6rY(x >  
:X"?kK0V  
} E~,F  
Q[Z8ok  
选择排序: }I2wjO  
T _r:4JS  
package org.rut.util.algorithm.support; oVnvO iAc  
j 7fL7:,T  
import org.rut.util.algorithm.SortUtil; $yN{-T"  
K'55O&2  
/** #||}R[~P"  
* @author treeroot :1^LsLr5  
* @since 2006-2-2 "/yC@VC>  
* @version 1.0 !1rlN8w(qr  
*/ ,k.3|aZE  
public class SelectionSort implements SortUtil.Sort { B{/R: Hm  
8Pfb~&X^Ws  
/* !]42^?GH  
* (non-Javadoc) 2iHUZzz\  
* 1 Rq,a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B|Du@^$  
*/ fJ5iS  
public void sort(int[] data) { I?]ohG K  
int temp; @#<D ^"  
for (int i = 0; i < data.length; i++) { Q`~jw>x  
int lowIndex = i; |rY1US)S  
for (int j = data.length - 1; j > i; j--) { :D euX  
if (data[j] < data[lowIndex]) { ]99|KQ<s  
lowIndex = j; ,%6P0#-  
} |<HPn4 ,X  
} wYd b*"R  
SortUtil.swap(data,i,lowIndex); :uP,f<=)K  
} kh!FR u h  
} vhe>)h*B  
VdPtPq1  
} ?OId\'q  
\?w2a$?6w  
Shell排序: !6n_}I-W  
l#m#c6;=  
package org.rut.util.algorithm.support; vV6<^ W:9F  
kC WEtbz1  
import org.rut.util.algorithm.SortUtil; oNr-Q& C,  
H[{F'c[e  
/** :C7_Jp*Qv  
* @author treeroot LVX[uWEM  
* @since 2006-2-2 d<% z 1Dj2  
* @version 1.0 WeJl4wF  
*/ ` w=>I  
public class ShellSort implements SortUtil.Sort{ cT<1V!L4  
%huRsQ %}  
/* (non-Javadoc) +Um( h-;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *e<[SZzYZ  
*/ //*fSF   
public void sort(int[] data) { T{Gj+7bQ~  
for(int i=data.length/2;i>2;i/=2){ !_"@^?,q  
for(int j=0;j insertSort(data,j,i); 9l|@v=gw.  
} 6TYY UM"&  
} b $'FvZbk  
insertSort(data,0,1); ydFD!mO  
} VA WF3  
={_C&57N1  
/** !\"EFVH  
* @param data qUh2hz:  
* @param j ?@BTGUK"C  
* @param i MPCBT!o4Z  
*/ M:XSQ["6>V  
private void insertSort(int[] data, int start, int inc) { U [*FCD!~  
int temp; qT ,Te  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fg s!v7  
} 4h~iPn'Wl  
} : imW\@u  
} ?QsQnQ  
'GB. UKlR  
} 9Kpa><  
Fa?~0H/DL  
快速排序: yQU_>_!n  
FO=4:   
package org.rut.util.algorithm.support; 5)FJ:1-  
i;]"n;>+/  
import org.rut.util.algorithm.SortUtil; {,3>"  
Qr1"Tk7s  
/** mIurA?&7!  
* @author treeroot ^]7}YF2|  
* @since 2006-2-2 (^s>m,h  
* @version 1.0 H+1-]'g`  
*/ ,X#2\r<|  
public class QuickSort implements SortUtil.Sort{ 9`wZz~hL"  
<nE>XAI_7  
/* (non-Javadoc) `q?8A3A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BZ:H`M`n  
*/ H#NCi~M>3  
public void sort(int[] data) { %4ePc-  
quickSort(data,0,data.length-1); gMY1ts}Z  
} 2#P* ,  
private void quickSort(int[] data,int i,int j){ 3wOZ4<B  
int pivotIndex=(i+j)/2; M*!agh  
file://swap lU @]@_<  
SortUtil.swap(data,pivotIndex,j); Xp >7iX!:  
C3*gn}[  
int k=partition(data,i-1,j,data[j]); I2TaT(e\  
SortUtil.swap(data,k,j); d_CKP"TA  
if((k-i)>1) quickSort(data,i,k-1); `)` n(B  
if((j-k)>1) quickSort(data,k+1,j); 0C1pt5K  
o4j[p3$  
} Gnf~u[T6  
/** O?)3VT*  
* @param data y603$Cv  
* @param i ^X0P'l &D2  
* @param j m4aB*6<lq  
* @return ZZ k=E4aae  
*/ >{N9kW Y  
private int partition(int[] data, int l, int r,int pivot) { aAJU`=uq  
do{ OTy.VT|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C3eR)Yh  
SortUtil.swap(data,l,r); Inn@2$m~  
} txW{7+,  
while(l SortUtil.swap(data,l,r); m=?KZ?U`  
return l; (0j}-iaQEZ  
} j:5=s%S  
}3o|EXx=  
} W"zab  
xGu r  
改进后的快速排序: PfreAEv,  
Nd`%5%'::  
package org.rut.util.algorithm.support; !;0U,!WI  
9  TvV=  
import org.rut.util.algorithm.SortUtil; cVubb}ou  
,u!*2cWN  
/** qC}-_u7s  
* @author treeroot DBPRGQ  
* @since 2006-2-2 y<HO:kZ8`  
* @version 1.0 Z9MdD>uwi  
*/ @{YS}&Q/  
public class ImprovedQuickSort implements SortUtil.Sort { `4(e  
#,7e NM"  
private static int MAX_STACK_SIZE=4096; g}f`,r9  
private static int THRESHOLD=10; C 'v+f=  
/* (non-Javadoc) \Z]UA&v_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eAXc:222  
*/ v\!Be[ ?  
public void sort(int[] data) { Y]NSN-t  
int[] stack=new int[MAX_STACK_SIZE]; \]&#%6|V  
qDv93  
int top=-1; 9F4Dm*_<  
int pivot; <\Eh1[F  
int pivotIndex,l,r; 'ixwD^x  
{XNREjhm  
stack[++top]=0; hJn%mdx~w|  
stack[++top]=data.length-1; crqpV F]1]  
V=zi >o`   
while(top>0){ Y,W uBH  
int j=stack[top--]; #cnq(S=.  
int i=stack[top--]; V^JV4 `o  
N F2/B#q  
pivotIndex=(i+j)/2; S'A>2>  
pivot=data[pivotIndex]; (5R?#vj  
+s,Qmmb7)  
SortUtil.swap(data,pivotIndex,j); g6Q!8  
7N-w eX  
file://partition :,Pn3xl  
l=i-1; y=`2\L" O  
r=j; h!&prYx  
do{ {U!8|(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .z 6fv  
SortUtil.swap(data,l,r); O$IEn/%+  
} F{EnOr`,m=  
while(l SortUtil.swap(data,l,r); \]=7!RQ\  
SortUtil.swap(data,l,j); kB/D!1 "  
& @s!<9$W  
if((l-i)>THRESHOLD){ I2 j}Am  
stack[++top]=i; 4G$|Rx[{,  
stack[++top]=l-1; ]3VI|f$$  
} <1FC%f/  
if((j-l)>THRESHOLD){ E0u~i59Z  
stack[++top]=l+1; 29!q!g|  
stack[++top]=j; ? %`@ub$  
} X=hYB}}nu  
BDq%'~/^  
} 9:,V5n=  
file://new InsertSort().sort(data); RnhL< Ywu  
insertSort(data); ,_yh z0.  
} /x5rf  
/** Ys@}3\Mc  
* @param data an|x$e7|?  
*/ nX(+s*Y+w  
private void insertSort(int[] data) { %;e/7`>Ma  
int temp; Bm"KOr$}-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1jy9lP=  
} I 4,K43|  
} NbC@z9Q  
} #Yr9AVr}K  
T2SP W@#Z3  
} 4T!+D  
Q.]}]QE   
归并排序: c8L~S/t  
%7"X(Ts7B  
package org.rut.util.algorithm.support; iTag+G4*  
"kMguK}c  
import org.rut.util.algorithm.SortUtil; *tgnYa[l  
| \'rP_I>  
/** W6"v)Jc>_  
* @author treeroot KcK>%%  
* @since 2006-2-2 VwOW=4`6  
* @version 1.0 Svc|0Ad&  
*/ t: #6sF  
public class MergeSort implements SortUtil.Sort{ &e;=cAXG  
7Garnd b  
/* (non-Javadoc) dgA-MQ5{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JcbwDlUb  
*/ -TM 0]{  
public void sort(int[] data) { Eo#u#IY  
int[] temp=new int[data.length]; #$c Rkw  
mergeSort(data,temp,0,data.length-1); %kB8'a3  
} 0JlZs]  
r:F  
private void mergeSort(int[] data,int[] temp,int l,int r){ / C>wd   
int mid=(l+r)/2; COW}o~3-4  
if(l==r) return ; MxY/`9>E|+  
mergeSort(data,temp,l,mid); u>TZt]h8  
mergeSort(data,temp,mid+1,r); 4eikLRD,  
for(int i=l;i<=r;i++){ 5dB'&8DX  
temp=data; <5NF;  
} *M$0J'-BQ  
int i1=l; \>C YC|  
int i2=mid+1; ~ECD`N<YF  
for(int cur=l;cur<=r;cur++){ [ { bV4  
if(i1==mid+1) HYD"#m'TkB  
data[cur]=temp[i2++]; qIY~dQ|  
else if(i2>r) 9(6I<]#  
data[cur]=temp[i1++]; >2,Gy-&"0  
else if(temp[i1] data[cur]=temp[i1++]; }; f#^gz'  
else !<SA6m#  
data[cur]=temp[i2++]; 0&/b42W  
} ;PjQt=4K  
} &2`Fn!m  
sFQ^2PwbS  
} #|*F1K  
Q($Z%1S  
改进后的归并排序: )hk   
tI7:5Cm  
package org.rut.util.algorithm.support; Y=?yhAw  
hi0R.V&  
import org.rut.util.algorithm.SortUtil; L+CyQq  
TZ2=O<Kj  
/** :'*DPB-  
* @author treeroot 7vABq(  
* @since 2006-2-2 ( YQWbOk  
* @version 1.0 *,Za6.=  
*/ w9o^s5n  
public class ImprovedMergeSort implements SortUtil.Sort { e_/b2"{  
j{NNSi3  
private static final int THRESHOLD = 10; /Wy.>YC|  
'Er:a?88l  
/* ]R=,5kK3  
* (non-Javadoc) mExVYp h  
* 5g9; +}X;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DSt]{fl`P  
*/ nzmDA6d  
public void sort(int[] data) {  jcI&w#re  
int[] temp=new int[data.length]; :dLAs@z  
mergeSort(data,temp,0,data.length-1); ds&e|VSH;  
} ]ut5S>,"  
w^LuIbA  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~i21%$  
int i, j, k; i:u1s"3~  
int mid = (l + r) / 2; Rr!Y3)f;  
if (l == r) D<V~f B  
return; v{9t]s>B  
if ((mid - l) >= THRESHOLD) X`fn8~5  
mergeSort(data, temp, l, mid); C&6IU8l\  
else XK: 9r{r{  
insertSort(data, l, mid - l + 1); M?[h0{^K  
if ((r - mid) > THRESHOLD) <x&%~6j  
mergeSort(data, temp, mid + 1, r); Tp0bS  
else 5cEcTJL[C  
insertSort(data, mid + 1, r - mid); Y_]De3:V0B  
i:Zm*+Gi  
for (i = l; i <= mid; i++) { $2u 'N:o  
temp = data; WdnIp!  
} :"l-KQ0  
for (j = 1; j <= r - mid; j++) { \#rIQOPl?  
temp[r - j + 1] = data[j + mid]; Vo7dAHHL  
} Qu7T[ <  
int a = temp[l]; >P/][MT  
int b = temp[r]; xY$iz)^0&  
for (i = l, j = r, k = l; k <= r; k++) { Y}[c^$S  
if (a < b) { <}sq?Sfq!  
data[k] = temp[i++]; ;>AL`M+  
a = temp; ONCnVjZ  
} else { YSj+\Z$(  
data[k] = temp[j--]; P1NJ^rX  
b = temp[j]; .58qL-iC  
} 4WE6fJ2X  
} m\ddp_l  
} <a[Yk 2  
)x]3Zq  
/** ?_ dIIQ  
* @param data #Jna6  
* @param l in(U:04  
* @param i zLF?P3^  
*/ m~dC3}e8/?  
private void insertSort(int[] data, int start, int len) { 8@PX7!9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TARXx>  
} (%U@3._  
} ]XTu+T.aT  
} Z( 9 u<  
} 8HZs>l  
lw :`M2P,  
堆排序: nwN@DqO  
M{$j  
package org.rut.util.algorithm.support; )LdyC`S\c  
.-JCwnP  
import org.rut.util.algorithm.SortUtil; |Xw/E)jA  
'}rRzD:  
/** t#S<iBAZ  
* @author treeroot ay %KE=*v  
* @since 2006-2-2 N |1>ooU[  
* @version 1.0 rLU/W<F8  
*/ W;1|+6x  
public class HeapSort implements SortUtil.Sort{ 2QNNp:`6  
i@][rdhT  
/* (non-Javadoc) &bhq`>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h1(j2S`:  
*/ uK'&Dam  
public void sort(int[] data) { !gLkJ)  
MaxHeap h=new MaxHeap(); dV Q-k  
h.init(data); RID]pek  
for(int i=0;i h.remove(); fl;s9:<  
System.arraycopy(h.queue,1,data,0,data.length); kEO7PK/  
}  `juLQH  
-!)xQvagD.  
private static class MaxHeap{ +`sv91c  
gt\MS;jMa  
void init(int[] data){ :d8W +|1u  
this.queue=new int[data.length+1]; cv(PP-'\  
for(int i=0;i queue[++size]=data; Q.Aw2  
fixUp(size); <jS~ WI@  
} up2+ s#  
} (Z}>1WRju  
nkv(~ej(  
private int size=0; @vMA=v7a  
kqb0>rYa   
private int[] queue; O8] 'o*<]  
OgcHS?  
public int get() { {} Bf   
return queue[1]; uHIiH@ S  
} KIeT!kmDl  
5*\\J&H  
public void remove() { kSc{^-<R  
SortUtil.swap(queue,1,size--); ^ZM0c>ev=l  
fixDown(1); 2S8P}$mM  
} O,<IGO  
file://fixdown O'GG Ti]e  
private void fixDown(int k) { vfB2XVc  
int j; KvQ,;A  
while ((j = k << 1) <= size) { CAT.4GM  
if (j < size %26amp;%26amp; queue[j] j++; !vn1v)6  
if (queue[k]>queue[j]) file://不用交换 ^VT1vu %03  
break; @h?shW=^  
SortUtil.swap(queue,j,k); &/A 8-:m  
k = j; __@zTSVb  
} <} jPXEB"  
} =H8 xSJLh  
private void fixUp(int k) { 4gSH(*}  
while (k > 1) { b.O9ITR  
int j = k >> 1; J4=_w  
if (queue[j]>queue[k]) .P$IJUYO  
break; I5AO?BzJ  
SortUtil.swap(queue,j,k); T<-=nX  
k = j; ?4CNkk=v  
} Cv)/7vyB8  
} (]*H[)F/  
OquAql:   
} 3K@@D B6  
dV?5Q_}  
} U6[ang'l  
?4G|+yby  
SortUtil: Zs2-u^3&  
^O^:$nXhYy  
package org.rut.util.algorithm; a4gi,pz$]  
pbHsR^  
import org.rut.util.algorithm.support.BubbleSort; to"' By{9  
import org.rut.util.algorithm.support.HeapSort; QMo}W{D  
import org.rut.util.algorithm.support.ImprovedMergeSort;  qW_u  
import org.rut.util.algorithm.support.ImprovedQuickSort; X~ Rl 6/,  
import org.rut.util.algorithm.support.InsertSort; S>q>K"j^!  
import org.rut.util.algorithm.support.MergeSort; HftxS  
import org.rut.util.algorithm.support.QuickSort; !}M,  
import org.rut.util.algorithm.support.SelectionSort; 2}vg U$a  
import org.rut.util.algorithm.support.ShellSort; WqrgRpM{  
2eQdQwX  
/** w> xV  
* @author treeroot ]+DI.%   
* @since 2006-2-2  \4ghYQ:  
* @version 1.0 *pzq.#  
*/ ?R Fg$Z'^  
public class SortUtil { K:y^OAZfV  
public final static int INSERT = 1; 7?"y{R>E  
public final static int BUBBLE = 2; 3}1ssU"T  
public final static int SELECTION = 3; 1on'^8]0  
public final static int SHELL = 4; s|bM%!$1  
public final static int QUICK = 5; ,%#   
public final static int IMPROVED_QUICK = 6; EA<}[4#jS  
public final static int MERGE = 7; |rRG=tG_'  
public final static int IMPROVED_MERGE = 8; ]7AX%EG3  
public final static int HEAP = 9; lz | 64J  
7@%'wy&A  
public static void sort(int[] data) { Aw!gSf)  
sort(data, IMPROVED_QUICK); ^] p  
} /DS?}I.*]  
private static String[] name={ Wx)K* 9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Zszs1{t  
}; (y4#.vZh:  
2_QN&o ~h  
private static Sort[] impl=new Sort[]{ d6 _C"r  
new InsertSort(), qBk``!|s]  
new BubbleSort(), oCi ~P}r  
new SelectionSort(), CPazEe1S  
new ShellSort(), S(eQ{rSs  
new QuickSort(), Ja^ 5?Ar|  
new ImprovedQuickSort(), @nV5.r0W}B  
new MergeSort(), !{_yaVF  
new ImprovedMergeSort(), x;BbTBc>  
new HeapSort() E^ h=!RW{  
}; x4a:PuqmGG  
6er(%4!  
public static String toString(int algorithm){ )E7 FA|  
return name[algorithm-1]; T9y;OG  
} ZX`J8lZP  
~bA,GfSn0  
public static void sort(int[] data, int algorithm) { _.18z+  
impl[algorithm-1].sort(data); SjcL#S($&Y  
} BZ+-p5]-  
w3*-^: ?j  
public static interface Sort { \X}8 q  
public void sort(int[] data); S9Y[4*//  
} nX%AeDBAT  
=)<3pGO  
public static void swap(int[] data, int i, int j) { #'o7x'n^  
int temp = data; *8g<R  
data = data[j]; ('o&Q_  
data[j] = temp; @O3/3vi1  
} (hZ:X)E>  
} +`| *s3M  
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