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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。 nz+KA\iW  
插入排序: `MS=/xE  
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package org.rut.util.algorithm.support; ;DpK* A  
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import org.rut.util.algorithm.SortUtil; 1lM0pl6M  
/** 9yPB)&"EF  
* @author treeroot Bc@e;k@i  
* @since 2006-2-2 ,# 6\:i  
* @version 1.0 gsAO<Fy  
*/ >F v8 -  
public class InsertSort implements SortUtil.Sort{ 7+bzCDKU  
&3efJ?8  
/* (non-Javadoc) k-/$8C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r`@Dgo}  
*/ W*2SlS7  
public void sort(int[] data) { |9h[Q[m  
int temp; JB7]51WH@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Et (prmH  
} Nx"?'-3Hm  
} iGIaZ!j aW  
} -p }]r  
m,b<b91  
} bPEAG=l"-  
w~`P\i@  
冒泡排序: *!/9?M{p  
7gkHKdJoMA  
package org.rut.util.algorithm.support; ^AN9m]P  
\a#2Wm  
import org.rut.util.algorithm.SortUtil; sq%f%?(V  
F&Gb[Q&a8  
/** sYL+;(#t  
* @author treeroot PSE![whK  
* @since 2006-2-2 oUqNA|l T  
* @version 1.0 JQb]mU%?  
*/ px*MOHq K  
public class BubbleSort implements SortUtil.Sort{ eP)RP6ON{  
86i =N _  
/* (non-Javadoc) _> *"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4{8 $:q=  
*/ u=4Rn  
public void sort(int[] data) { 1DX=\BWp  
int temp; IpWl;i`__  
for(int i=0;i for(int j=data.length-1;j>i;j--){ C-(&zwj?!  
if(data[j] SortUtil.swap(data,j,j-1); 5 Z@Q ^  
} ReY K5J=O  
} r`=d4dK-  
} ~HELMS~-  
} Vrnx# j-U  
7}Gy%SJ`  
} Nz m 7E]  
wm}i+ApK  
选择排序: ,QK>e;:Be  
q|~9%Pujg  
package org.rut.util.algorithm.support; EprgLZ1B  
$+tkBM  
import org.rut.util.algorithm.SortUtil; rIXAn4,dTv  
@=$;^}JS|  
/** `8L7pbS%,Q  
* @author treeroot rA9"CN  
* @since 2006-2-2 |')Z;  
* @version 1.0 z2r{AQ.&  
*/ kWgxswl7H  
public class SelectionSort implements SortUtil.Sort { [j5L}e!T  
Uu G;z5  
/* N(D_*% 96  
* (non-Javadoc) mF "ctxE  
* ;&iQNXL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RsE+\)  
*/ y'(;!5w  
public void sort(int[] data) { K\uR=L7  
int temp; FsD}N k=m~  
for (int i = 0; i < data.length; i++) { P? >p+dM  
int lowIndex = i; HH>]"mv  
for (int j = data.length - 1; j > i; j--) { /@0wbA  
if (data[j] < data[lowIndex]) { .6r&<*  
lowIndex = j; )s!x)< d;  
} ]]Wa.P~]O  
} xC|7"N^/  
SortUtil.swap(data,i,lowIndex); *r%=p/oQ}B  
} |W?x6]~.R  
} hse$M\5  
!?]NMf_  
} E}~ GXG  
*/6PkNq  
Shell排序: vrH/Z.WD  
Ra.<D.  
package org.rut.util.algorithm.support; <CeDIX t  
9=:!XkT.  
import org.rut.util.algorithm.SortUtil; Z(Xu>ap  
5=l Ava#  
/** [&e}@!8O`  
* @author treeroot oM J5;  
* @since 2006-2-2 g,\<fY+ 4  
* @version 1.0 m,'u_yK  
*/ gQ& FO~cr  
public class ShellSort implements SortUtil.Sort{ w!h!%r  
[$B  
/* (non-Javadoc) SFTThM]8M1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PX+$Us  
*/ !uHX2B+~  
public void sort(int[] data) { WG9x_X&XJ  
for(int i=data.length/2;i>2;i/=2){ QH;1*  
for(int j=0;j insertSort(data,j,i); ;|66AIwDe  
} 68d(6?OgW  
} \!`*F :7]-  
insertSort(data,0,1); gJ:Z7b  
} jytfGE:  
ZfS-W&6Z  
/** {,,w5/k^  
* @param data 6:@tHUm  
* @param j uS3J^=>@(a  
* @param i [@Y?'={qE  
*/ !RAyUfS  
private void insertSort(int[] data, int start, int inc) { p.)G ],  
int temp; _.zW[;84b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AfyEFnY  
} )0YMi!&j`  
} cSQvP.  
} ji:JLvf]%  
>{V]q*[/;Q  
} m;k' j@:  
`O-$qT, _  
快速排序: @32JMS<  
yPKeatH]  
package org.rut.util.algorithm.support; g?)9zJ9  
S'lZ'H/  
import org.rut.util.algorithm.SortUtil; YEQ}<\B\&  
[ q22?kT  
/** y1B3F5  
* @author treeroot J1hc :I<;  
* @since 2006-2-2 *o`bBdZ  
* @version 1.0 Jk 0 ;<2j  
*/ ^I@43Jy/  
public class QuickSort implements SortUtil.Sort{ [{L4~(uU8  
%3|0_  
/* (non-Javadoc) (Jy7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /(5 SJ(a  
*/ ?tSFM:9PU  
public void sort(int[] data) {  5'Y @c  
quickSort(data,0,data.length-1); M5CFW >T  
} (ybKACx  
private void quickSort(int[] data,int i,int j){ 5l}v  
int pivotIndex=(i+j)/2; PohG y  
file://swap ?=$a6o  
SortUtil.swap(data,pivotIndex,j); ,_D`0B6o  
%TP0i#J  
int k=partition(data,i-1,j,data[j]); 8N'[ )Jw  
SortUtil.swap(data,k,j); 5F18/:\n  
if((k-i)>1) quickSort(data,i,k-1); YOqGFi~`  
if((j-k)>1) quickSort(data,k+1,j); [g`P(?  
MZv In ZS  
} h:}oUr8   
/** vg5i+ry<  
* @param data @/g%l1$`  
* @param i aTxss:7]  
* @param j P?\IlziCB  
* @return q{nNWvL  
*/ nZ0- Kb  
private int partition(int[] data, int l, int r,int pivot) { jA?A)YNQb  
do{ P|Dw +lQj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (3C::B=  
SortUtil.swap(data,l,r); |L 11?{ K  
} nRzD[ 3I  
while(l SortUtil.swap(data,l,r); hQv~C4Wfrf  
return l; 79^Y^.D  
} _8v8qT}O~4  
>,yE;zuw  
} tt $DWmm  
9@9(zUS|  
改进后的快速排序: !?,7Cu.5#6  
|@`F !bnLr  
package org.rut.util.algorithm.support; d,tGW  
Kc$j<MRtv  
import org.rut.util.algorithm.SortUtil; kI<;rP1S|  
omevF>b;  
/** N =FX3Z  
* @author treeroot <b.?G  
* @since 2006-2-2 JK) )Cuh  
* @version 1.0 |4^us|XY  
*/ UzTFT:\  
public class ImprovedQuickSort implements SortUtil.Sort { 0K<y }  
{OtD+%  
private static int MAX_STACK_SIZE=4096; c07'mgsU  
private static int THRESHOLD=10; pnl7a$z  
/* (non-Javadoc) Uus%1hC%a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?%-VSL>$w=  
*/ Up*1j:_O  
public void sort(int[] data) { ND $m|V-C  
int[] stack=new int[MAX_STACK_SIZE]; I|8'#QX  
0}tf*M+a  
int top=-1; 2.)xWCG  
int pivot; c5C 2xE}T  
int pivotIndex,l,r; 094~  s  
WT;4J<O/  
stack[++top]=0; .0+=#G>  
stack[++top]=data.length-1; :Aj8u\3!@  
GrPKJ~{6  
while(top>0){  ieo Naq  
int j=stack[top--]; {Rc mjI7  
int i=stack[top--]; o b;]  
X67^@~l  
pivotIndex=(i+j)/2; Aj#bhv  
pivot=data[pivotIndex]; tUU`R{=(  
8S/SXyS  
SortUtil.swap(data,pivotIndex,j); *'[8FZ|dQ  
@-ps[b`z  
file://partition Hj(ay4 8  
l=i-1; w*#B_6bG  
r=j; }x!=F<Q!r  
do{ ]z3!hgTj  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >n3w'b  
SortUtil.swap(data,l,r); uy'm2  
} qw?#~"Ca.  
while(l SortUtil.swap(data,l,r); mW EaUi)Zz  
SortUtil.swap(data,l,j); b* (~8JxZ  
m03D+@F  
if((l-i)>THRESHOLD){ JV_VF'  
stack[++top]=i; bvn%E H  
stack[++top]=l-1; X?'ShXI  
} "}ibH{$lM  
if((j-l)>THRESHOLD){ B}S!l>.z  
stack[++top]=l+1; K!~j}z*  
stack[++top]=j; }\ kLh(  
} )bqSM&SO  
ufl[sj%^|  
} 8[v9|r  
file://new InsertSort().sort(data); y950Q%B]  
insertSort(data); GO&~)Vh&7  
} zy8Z68%E`*  
/** fL$U%I3  
* @param data zP554Gr?  
*/ 0SS,fs<w3  
private void insertSort(int[] data) { P'}WmE'B}F  
int temp; -nK\+bTL}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /Uxp5 b h  
} y0}3s)lKv  
} fhwJ  
} D@W[Nd5MJ  
M$J{clr  
} +>bm~6  
Y["aw&;#O\  
归并排序: 2bv/ -^  
R;d)I^@  
package org.rut.util.algorithm.support; 0+3_CS++r  
 >;qAj!'  
import org.rut.util.algorithm.SortUtil; = 1ltX+   
b6(LoN.  
/** ce56$L8[  
* @author treeroot 7l%]O}!d)  
* @since 2006-2-2 1 sJtkge:  
* @version 1.0 "%zb>`1s  
*/ t@(:S6d  
public class MergeSort implements SortUtil.Sort{ t_xO-fT)  
S"=y >.#  
/* (non-Javadoc) U~CG(9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WNnB s  
*/ b;;mhu  
public void sort(int[] data) { 6Dl]d %.  
int[] temp=new int[data.length]; EN2H[i+,  
mergeSort(data,temp,0,data.length-1); "5wer5? t  
} V Zz>)Kz:  
iVaCXXf'  
private void mergeSort(int[] data,int[] temp,int l,int r){ {u}d`%_.M  
int mid=(l+r)/2; =# /BCL7  
if(l==r) return ; hnYL<<AA  
mergeSort(data,temp,l,mid); r'F)8%  
mergeSort(data,temp,mid+1,r); /`kM0=MMa  
for(int i=l;i<=r;i++){ <Jc :a?ICe  
temp=data; %VH{bpS|i:  
} ?z pN09e  
int i1=l; 6lAHB*`  
int i2=mid+1; 'G)UIjl  
for(int cur=l;cur<=r;cur++){ QJ4=*tX)  
if(i1==mid+1) ztEM>xsk  
data[cur]=temp[i2++]; _8 C:Md`  
else if(i2>r) {,X}Btnwp  
data[cur]=temp[i1++]; F[@M?  
else if(temp[i1] data[cur]=temp[i1++]; )lh Pl  
else #@UzOQ>  
data[cur]=temp[i2++]; aam6R/4  
} S"<"e\\}"_  
} fW3 awR{  
~bD'QMk  
} ?mi1PNps#  
t,]E5,1  
改进后的归并排序: xg.o7-^M  
eAl;:0=%L  
package org.rut.util.algorithm.support; rYI7V?  
K@<%Vc>L(  
import org.rut.util.algorithm.SortUtil; 3;%dn \ D  
360b`zS  
/** ."u DM<  
* @author treeroot ^'G,sZ6'Nh  
* @since 2006-2-2 Vi*HG &DD  
* @version 1.0 (3VV(18  
*/ =O o4O CF2  
public class ImprovedMergeSort implements SortUtil.Sort { 7[I%UP  
'$0~PH&  
private static final int THRESHOLD = 10; w D}g\{P  
/idrb c  
/* *Dhy a g  
* (non-Javadoc) o+0x1Ct3P  
* (#K u`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $8{v_2C){  
*/ ^q}cy1"j"  
public void sort(int[] data) { zgn~UC6&  
int[] temp=new int[data.length]; 9Hm>@dBhM  
mergeSort(data,temp,0,data.length-1); wa%;'M&  
} AuIg=-xR  
TbQ5  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y;"rJxHD  
int i, j, k; @b3jO  
int mid = (l + r) / 2; cii! WCu  
if (l == r) 5fvY#6;  
return; iXPe  
if ((mid - l) >= THRESHOLD) 0`Hr(J`F  
mergeSort(data, temp, l, mid); T$IwrTF@?  
else p:Hg>Z  
insertSort(data, l, mid - l + 1); 9#MY(Hr  
if ((r - mid) > THRESHOLD) -d)+G%{  
mergeSort(data, temp, mid + 1, r); p0sq{d~  
else }UzRFIcv  
insertSort(data, mid + 1, r - mid); w!--K9  
:406Oa  
for (i = l; i <= mid; i++) { SCL8.%z D  
temp = data; /v-:ca)7mI  
} IBm"VCg{Ew  
for (j = 1; j <= r - mid; j++) { = P@j*ix  
temp[r - j + 1] = data[j + mid]; 6F:< c  
} ] ^ s,  
int a = temp[l]; :cA%lKg  
int b = temp[r]; ,SG-{   
for (i = l, j = r, k = l; k <= r; k++) { ,a'Y^[4k?  
if (a < b) { J^gElp  
data[k] = temp[i++]; v[XTH 2  
a = temp; "n%0L4J  
} else { [ BZA1,  
data[k] = temp[j--]; 8nE}RD7bx  
b = temp[j]; Vk:] aveW  
} zEy,aa :M  
} FMEW['  
} ?2nF1>1  
P}~nL  
/** 'Da*MGu9  
* @param data 2>*b.$g  
* @param l []l2 `fS#  
* @param i ;"w?@ELE  
*/ b]6@ O8  
private void insertSort(int[] data, int start, int len) { @Yj+u2!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); b <z)4  
} W,f XHYst  
} I%M"I0FV  
} #p7K2  
} T)o>U &KNP  
6-Id{m x  
堆排序: 1LVO0lT  
"I,=L;p  
package org.rut.util.algorithm.support; vf;&0j&`  
o2rL&  
import org.rut.util.algorithm.SortUtil; d#1yVdqRl  
Sp/<%+2(  
/** 4 Kh0evZ  
* @author treeroot -gB9476-  
* @since 2006-2-2 CmxQb,Uls  
* @version 1.0 3eERY[  
*/ tA8O( 9OV  
public class HeapSort implements SortUtil.Sort{ *2>kic aH  
'h87 A-\!F  
/* (non-Javadoc) 3 =-V!E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B'&QLO|  
*/ -?p4"[  
public void sort(int[] data) { b?K`DUju{0  
MaxHeap h=new MaxHeap(); W<u,S  
h.init(data); t.Yf8Gy  
for(int i=0;i h.remove(); )F_nK f"a  
System.arraycopy(h.queue,1,data,0,data.length); _=_<cg y1u  
} u*$]Bx  
ipC <p?PpR  
private static class MaxHeap{ Qs,4PPEg  
W1_.wN$,5  
void init(int[] data){ 0Py*%}r1  
this.queue=new int[data.length+1]; "8R &c}  
for(int i=0;i queue[++size]=data; bObsj]  
fixUp(size); 9s1^hW2%Q  
} 7Ie=(x8):  
} ac\([F-  
hI 9q);g  
private int size=0; ^qzH(~g{M  
3YJ"[$w='(  
private int[] queue; .)SR3?   
}V[ORGzox  
public int get() { f!{@{\  
return queue[1]; QIg'js$W  
} S@g(kIo]  
91]sO%3  
public void remove() { YN+vk}8 <  
SortUtil.swap(queue,1,size--); wSw> UU  
fixDown(1); 2WTOu x*  
} }8PO m#  
file://fixdown $rlrR'[H  
private void fixDown(int k) { $ nHD,h  
int j; TkJ[N4'0  
while ((j = k << 1) <= size) { .`Q^8|$-K  
if (j < size %26amp;%26amp; queue[j] j++; 6]4#8tR1_  
if (queue[k]>queue[j]) file://不用交换 v+I-*,R  
break; !LzA  
SortUtil.swap(queue,j,k); V$sY3,J7A%  
k = j; ~USt&?  
} ![ sXR  
} dI&Q5M8  
private void fixUp(int k) { OZ+v ~'oD  
while (k > 1) { AYgXqmH~+  
int j = k >> 1; b>Y{,`E3  
if (queue[j]>queue[k]) B6Eu."T  
break; tAF?. \x"g  
SortUtil.swap(queue,j,k); Z&Ciy n  
k = j; ! 5NuFLOf  
} =E5bM_P<K  
} i'7+ ?YL  
#{vC =m73  
} fT|A^  
xC,x_:R`  
} i=cST8!8N  
Zym6btc  
SortUtil: REU,"  
sVK?sBs]  
package org.rut.util.algorithm; qD4]7"9  
Jsysk $R  
import org.rut.util.algorithm.support.BubbleSort; lI 4tW=  
import org.rut.util.algorithm.support.HeapSort; ;~EQS.Qp  
import org.rut.util.algorithm.support.ImprovedMergeSort; PDuc;RG  
import org.rut.util.algorithm.support.ImprovedQuickSort; )63 $,y-;$  
import org.rut.util.algorithm.support.InsertSort; O=A2QykV(  
import org.rut.util.algorithm.support.MergeSort; H*'1bLzq  
import org.rut.util.algorithm.support.QuickSort; }=5>h' <  
import org.rut.util.algorithm.support.SelectionSort; RqtBz3v  
import org.rut.util.algorithm.support.ShellSort; njF$1? )sq  
UowvkVa  
/** du66a+@t  
* @author treeroot _cX}!d!j  
* @since 2006-2-2 qcS.=Cj?)  
* @version 1.0 kFv*>>X`  
*/ <qwf"Ey  
public class SortUtil { e@Lxduq  
public final static int INSERT = 1; 5e /YEDP  
public final static int BUBBLE = 2; @PEFl"  
public final static int SELECTION = 3; sD:o 2(G*  
public final static int SHELL = 4; nt#9j',6Rn  
public final static int QUICK = 5; ^_;'9YD  
public final static int IMPROVED_QUICK = 6; j#1G?MF  
public final static int MERGE = 7; Yv5H41o"  
public final static int IMPROVED_MERGE = 8; X.eOw>.  
public final static int HEAP = 9; rm8Ys61\=  
> S>*JP  
public static void sort(int[] data) { R}ki%i5|  
sort(data, IMPROVED_QUICK); v;x0=I&%  
} 5#,H&ui\  
private static String[] name={ \8`7E1d  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <+_XGOt0<  
}; /MGapmqV9  
\c< oVF'  
private static Sort[] impl=new Sort[]{ \Ii{sn9  
new InsertSort(), hOY@vm&  
new BubbleSort(), }a7d(7  
new SelectionSort(), gV2vwe  
new ShellSort(), m,k 0 h%  
new QuickSort(), ?woL17Gt  
new ImprovedQuickSort(), H9mNnZ_k  
new MergeSort(), L  ;L:  
new ImprovedMergeSort(), u>*a@3$f  
new HeapSort() sbW+vc  
}; q)?%END  
aZN?V}^+  
public static String toString(int algorithm){ @d WA1tM  
return name[algorithm-1]; >jW**F  
}  g\q .  
|+Y-i4t  
public static void sort(int[] data, int algorithm) { 6}^x#9\  
impl[algorithm-1].sort(data); /5NWV#-  
} UPhO =G  
$*C }iJsF  
public static interface Sort { ?"yjgt7+y  
public void sort(int[] data); ^E70$yB ^  
} Y~UuT8-c  
!db=Iz5)  
public static void swap(int[] data, int i, int j) { qs]W2{-4~  
int temp = data; Ne u$SP  
data = data[j]; +6WjOcu  
data[j] = temp; y" =?l  
} =[n !3M+X  
} awzlLI<2p  
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