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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。 v5.KCc}"  
插入排序: Nb\B*=4AR  
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package org.rut.util.algorithm.support; -90X^]  
:*J!  
import org.rut.util.algorithm.SortUtil; hjp,v)#  
/** m21H68y  
* @author treeroot cZAf?,>u  
* @since 2006-2-2 v=-T3 n  
* @version 1.0 x'V:qv*O  
*/ y>ePCDR3  
public class InsertSort implements SortUtil.Sort{ >vNE3S_  
$Eo-58<q  
/* (non-Javadoc) s2 $w>L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2=X.$&a  
*/ ]MB6++.e  
public void sort(int[] data) { J n'SGR  
int temp; u`u{\ xN9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zn5|ewl@"  
} hdYd2 j  
} i \@a&tw  
} D*ZswHT{y  
"1hFx=W+\  
} U+ V yH4"  
y.::d9v  
冒泡排序: `=2p6<#z  
l^rQo_alk  
package org.rut.util.algorithm.support; D~ 7W  
FMC]KXSd  
import org.rut.util.algorithm.SortUtil; j_SUR)5  
] m #*4  
/** v+'*.Iv:  
* @author treeroot ubl)$jZ:Q  
* @since 2006-2-2 _Pn 1n  
* @version 1.0 ^N O4T  
*/ 2W;2._  
public class BubbleSort implements SortUtil.Sort{ c=p!2jJ1K~  
LVJn2t^  
/* (non-Javadoc) VhU,("&pm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &,$N|$yK}|  
*/ ra^"Vr  
public void sort(int[] data) { <BK?@Xy  
int temp; ^(7Qz&q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ p-,Bq!aG$  
if(data[j] SortUtil.swap(data,j,j-1); *Z3b6X'e  
} Uf~5Fc1d =  
} LB^xdMXi  
} U=[isi+7  
} lO HW9Z  
Y9B"yV  
} d/\ajQ1::  
!'>,37()  
选择排序: dHtEyF  
+_ny{i`'  
package org.rut.util.algorithm.support; X5=I{eY}  
fD%20P`.  
import org.rut.util.algorithm.SortUtil; 2j$~lI  
[iC]Wh%  
/** .L.9e#?3  
* @author treeroot 5X:3'*  
* @since 2006-2-2 STz@^A  
* @version 1.0 yn.[-  
*/ TpxAp',#7  
public class SelectionSort implements SortUtil.Sort { u"DE?  
CM)V^k*  
/* <>V~  
* (non-Javadoc) Fp>nu_-"  
* LXf|n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40 zO4  
*/ c,}VC-  
public void sort(int[] data) { xggF:El3{  
int temp; }l_8~/9  
for (int i = 0; i < data.length; i++) { n'!x"O7  
int lowIndex = i;  Au*1-  
for (int j = data.length - 1; j > i; j--) { xxOhGA)  
if (data[j] < data[lowIndex]) { V9wL3*  
lowIndex = j; %{0F.  
} rnBp2'EM  
} 8( bK\-b  
SortUtil.swap(data,i,lowIndex); T[2<_nn=  
} sk@aOv'*(  
} T75N0/teS  
4K,S5^`Gx  
} $}=r 45e0K  
M%7|7V<o)^  
Shell排序: AsI.8"  
'a"Uw"/p[  
package org.rut.util.algorithm.support; uYijzHQyD  
6Ia[`x uL  
import org.rut.util.algorithm.SortUtil; 3=%G{L16-  
'30JJ0  
/** uFFC.w  
* @author treeroot `)Y 5L}c=  
* @since 2006-2-2 chM-YuN|  
* @version 1.0 {d> 6*b  
*/ cvYKZB  
public class ShellSort implements SortUtil.Sort{ ."`||@|  
7t+H94KG7  
/* (non-Javadoc) QRwOv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) im F,8'  
*/ 6rlvSdB  
public void sort(int[] data) { ]hZk #rp}  
for(int i=data.length/2;i>2;i/=2){ bb$1zSA  
for(int j=0;j insertSort(data,j,i); E CPSE {  
} Mo4c8wp&SM  
} @2TfW]6  
insertSort(data,0,1); n2Q ?sV;m  
} (N5"'`NZA  
V6'k\5|_  
/** 15MKV=?oY  
* @param data y(=0  
* @param j |7!Bk$(vA  
* @param i $)'LbOe  
*/ X7?j90tH  
private void insertSort(int[] data, int start, int inc) { TV}=$\D  
int temp; ^=qV)j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O mph(  
} ^}lL@Bd|  
} $SfY<j,R  
} c*R18,5-  
>]2^5C;  
} [~?6jnp  
bG+Gg*0p  
快速排序: IEWl I  
LYTnMrM  
package org.rut.util.algorithm.support; }TDq7-(g  
zR?1iV.]  
import org.rut.util.algorithm.SortUtil; qipS`:TER  
{vur9L  
/** rym*W\AWx  
* @author treeroot #r]GnC,  
* @since 2006-2-2 C}\kp0mz  
* @version 1.0  !>Q{co'  
*/ D2zqDo<+;  
public class QuickSort implements SortUtil.Sort{ wd1>L) T  
[5Zi\'~UH)  
/* (non-Javadoc) l !ZzJ&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) muO;g&  
*/ A@reIt  
public void sort(int[] data) { ?28)l 4 Ml  
quickSort(data,0,data.length-1); {_ZbPPh;M"  
} nFwdW@E9  
private void quickSort(int[] data,int i,int j){ 01IfvK  
int pivotIndex=(i+j)/2; @Y#TWt#  
file://swap X"%eRW&qu/  
SortUtil.swap(data,pivotIndex,j); EdZNmL3cB  
z]j_,3Hff  
int k=partition(data,i-1,j,data[j]); UN:cRH{?*  
SortUtil.swap(data,k,j); TBgiA}|\D  
if((k-i)>1) quickSort(data,i,k-1); fqn;,!D?9  
if((j-k)>1) quickSort(data,k+1,j); N<QLvZh  
b)T6%2  
} ~}Z{hs)  
/** $=Tq<W*c  
* @param data @FN1o4&3  
* @param i iu{QHjZK(  
* @param j rEs!gGNN  
* @return {wD "|K  
*/ F0'8n6zj  
private int partition(int[] data, int l, int r,int pivot) { lT'V=,Y t  
do{ ;9qwB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !0cb f&^:  
SortUtil.swap(data,l,r); xww\L &y  
} yaAg!mW  
while(l SortUtil.swap(data,l,r); {3 >`k.w  
return l; ,fj~BkW{  
} T? ,Q=.  
3) XS^WG  
} ca%XA|_J  
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改进后的快速排序: ,|w,  
:BblH0'  
package org.rut.util.algorithm.support; M$3/jl*#}  
KCn#*[  
import org.rut.util.algorithm.SortUtil; ,_:6qn{  
VGOdJ|2]Wr  
/** 8,:lw3x1  
* @author treeroot Gn<e&|4>i}  
* @since 2006-2-2 I!.-}]k  
* @version 1.0 UBx0Z0Y  
*/ A$TF a:O|  
public class ImprovedQuickSort implements SortUtil.Sort { Q|Nw @7$`  
p(A[ah_  
private static int MAX_STACK_SIZE=4096;  8vUq8[[  
private static int THRESHOLD=10; "p&4Sn3T2?  
/* (non-Javadoc) Vtk}>I@%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0:eK}tC  
*/ [LSs|f  
public void sort(int[] data) { qtp-w\#S$  
int[] stack=new int[MAX_STACK_SIZE]; C(}Kfi@6N  
dkZ[~hEQG-  
int top=-1; Rtai?  
int pivot; }$:ha>  
int pivotIndex,l,r; Rz33_ qA  
Fh.Z sPn,m  
stack[++top]=0; (- {.T  
stack[++top]=data.length-1; :Z]\2(x  
9A}nZ1Y  
while(top>0){ 83Fmu/(  
int j=stack[top--]; d^`n/"Ice  
int i=stack[top--]; ;5}"2hU>  
r4 ;nkx  
pivotIndex=(i+j)/2; "=0JYh)%_  
pivot=data[pivotIndex]; !XY}\zKq  
J#G\7'?{  
SortUtil.swap(data,pivotIndex,j); x%RE3J-  
jDW$}^ 6  
file://partition  j g_;pn  
l=i-1; (@xr/9:i  
r=j; h'A #Yp0,  
do{ |l,0bkY@&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m_UzmWF  
SortUtil.swap(data,l,r); &-|(q!jm  
} a6g+"EcH#'  
while(l SortUtil.swap(data,l,r); r D|Bj(X8  
SortUtil.swap(data,l,j); AaJz3oncJ  
1@`mpm#Y  
if((l-i)>THRESHOLD){ $P Tl{  
stack[++top]=i; 0f,Ii_k bT  
stack[++top]=l-1; <:~'s]`zf  
} d'p@[1/  
if((j-l)>THRESHOLD){ </qli-fXB}  
stack[++top]=l+1; J8h H#7WMS  
stack[++top]=j; 1@Rl^ey  
} 5Veybchy "  
=UF mN"  
} QkY;O<Y_  
file://new InsertSort().sort(data); AHTQF#U^  
insertSort(data); 200Fd8Ju  
} PJ'@!jx  
/** '>UQsAvm  
* @param data PL7_j  
*/ Yn-;+ 4 K  
private void insertSort(int[] data) { |A:+[35  
int temp; fMZc_dsW9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g=kuM  
} L(3} H,t  
} .T7S1C $HP  
} wTVd){q`.  
+p &$`(  
} {I QCA-AI  
Ga $EM  
归并排序: $:*/^)L  
*iujJ i  
package org.rut.util.algorithm.support; OyTp^W`&  
<{A|Xs  
import org.rut.util.algorithm.SortUtil; UC?i>HsJrX  
gK- $y9]~+  
/** YnX6U 1/^  
* @author treeroot I#](mRJ6  
* @since 2006-2-2 O%busM$P)/  
* @version 1.0 'U4@Sax,  
*/ F0+@FS0   
public class MergeSort implements SortUtil.Sort{ bOdyrynh  
,F0bkNBG  
/* (non-Javadoc) /PtmJ2 [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wTu=v  
*/ 7f q\ H{  
public void sort(int[] data) { M1=y-3dW3  
int[] temp=new int[data.length]; X:gE mcXc  
mergeSort(data,temp,0,data.length-1); AO^c=^  
} nV?e(}D  
_iW-i  
private void mergeSort(int[] data,int[] temp,int l,int r){ O.wk*m!9  
int mid=(l+r)/2; =VDtZSa!$^  
if(l==r) return ; ScTeh  
mergeSort(data,temp,l,mid); HiDL:14  
mergeSort(data,temp,mid+1,r); e{`DvfY21  
for(int i=l;i<=r;i++){ v/}h y$7  
temp=data; <Z9N}wY,8  
} F7qQrE5bl  
int i1=l; kG]FB.@bG  
int i2=mid+1; o`ijdg!5qG  
for(int cur=l;cur<=r;cur++){ ? Eh)JJt  
if(i1==mid+1) /N\[ C"8  
data[cur]=temp[i2++]; Z)H9D(Za  
else if(i2>r)  tvvRHvL  
data[cur]=temp[i1++]; 1M/_:UH`  
else if(temp[i1] data[cur]=temp[i1++]; }TAHVcX*p  
else naWW i]9  
data[cur]=temp[i2++]; >-<7 r?~  
} 9_\1cSk'  
} >&2n\HR\  
%^66(n)  
} 9Y-6e0B:  
RF.8zea{O`  
改进后的归并排序: @;H1s4OZ  
P :D6w){  
package org.rut.util.algorithm.support; 5nJmabw3  
Xu#K<#V  
import org.rut.util.algorithm.SortUtil; tD !$!\`O  
9x9~u8j  
/** 9='=wWW  
* @author treeroot p}R3A J  
* @since 2006-2-2 qox31pnS  
* @version 1.0 %y}l^P5z  
*/ >6zXr.  
public class ImprovedMergeSort implements SortUtil.Sort { a76`"(W  
V61.UEN  
private static final int THRESHOLD = 10; zWEt< `1M  
Ww$ ?X LF  
/* f8?c[%br  
* (non-Javadoc) .jjv S  
* !aub@wH3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qT+:oMrTSm  
*/ %O_Ed {G4t  
public void sort(int[] data) { N8w@8|KM  
int[] temp=new int[data.length]; ~J,e^$u  
mergeSort(data,temp,0,data.length-1); ^N_?&pgy  
} oN6 '%   
*/yR _f  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4w-P%-4  
int i, j, k; 9Wi+7_)  
int mid = (l + r) / 2; jFMf=u&U  
if (l == r) G Za<  
return; Y>: e4Q  
if ((mid - l) >= THRESHOLD) p[M*<==4  
mergeSort(data, temp, l, mid); F),wj8#~>-  
else 5W=jQ3 C  
insertSort(data, l, mid - l + 1); &fYV FRVkq  
if ((r - mid) > THRESHOLD) .kkrU  
mergeSort(data, temp, mid + 1, r); wX*F'r"z  
else F-2&P:sjQ  
insertSort(data, mid + 1, r - mid); ' Zmslijf  
b#[7A  
for (i = l; i <= mid; i++) { IHlTp0?  
temp = data; lwuslt*E/  
} \a}W{e=FNT  
for (j = 1; j <= r - mid; j++) { 51lN,VVD  
temp[r - j + 1] = data[j + mid]; =/jCDY  
} z4 yV1  
int a = temp[l]; my^2}>wi  
int b = temp[r]; 5U+a{oA  
for (i = l, j = r, k = l; k <= r; k++) { B&oP0 jS  
if (a < b) { d;9F2,k$w  
data[k] = temp[i++];  E\! <=  
a = temp; T=n)ea A  
} else { #+,O  
data[k] = temp[j--]; m=uW:~  
b = temp[j]; rF8n z:8  
} ai,Nx:r   
} 5*W<6ia  
} XLNR%)l  
k^Q>  
/** Lu@'Ee!>G  
* @param data N }tiaL4  
* @param l QirS=H+~  
* @param i h (1 }g/  
*/ pZv>{=2hOS  
private void insertSort(int[] data, int start, int len) { \P` mV9P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aV'r oxM  
} 2PSt*(  
} 6#rj3^]  
} j >wT-s  
} 8QYM/yAM  
wpLC,  
堆排序: )m7 Yo  
U1wsCH3+n  
package org.rut.util.algorithm.support; v!EE[[  
Q7b$j\;I  
import org.rut.util.algorithm.SortUtil; &7CAxU;i3  
5, <:|/r  
/** ?Q XS?  
* @author treeroot ucVn `  
* @since 2006-2-2 _(Qec?[^Ps  
* @version 1.0 fq2t^c|$  
*/ WKB8k-.]ww  
public class HeapSort implements SortUtil.Sort{ }dt7n65  
>x$.mXX{  
/* (non-Javadoc) P}Ud7Vil;l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >(aGk{e1  
*/ jg_##Oha  
public void sort(int[] data) { sZ!/uN!6  
MaxHeap h=new MaxHeap(); CI };$4W~  
h.init(data); XvIrO]F-  
for(int i=0;i h.remove(); L,B#%t  
System.arraycopy(h.queue,1,data,0,data.length); aF~ 0\XC  
} {IlX@qWr  
DWQ@]\  
private static class MaxHeap{ (K(6`~  
JWuF ?<+k  
void init(int[] data){ !VJ5(b  
this.queue=new int[data.length+1]; 9<ev]XaSl  
for(int i=0;i queue[++size]=data; rprtp5Cg  
fixUp(size); V!Q1o!J  
} Alsr6uLT1  
} -%*w&',G  
0DFxVH_xN  
private int size=0; C/w!Y)nB=  
Xt!%W    
private int[] queue; `f9I#B  
%;Dp~T`0  
public int get() { 7Q(5Nlfcz  
return queue[1]; 7Q>*]  
} )Bq~1M 2  
smM*HDK  
public void remove() { Y^Olcz  
SortUtil.swap(queue,1,size--); w/`I2uYu  
fixDown(1); -m.SN>V  
} p+;[i%`  
file://fixdown QlHxdRK`.  
private void fixDown(int k) { =h4* ^NJ  
int j; l$_Yl&!q$  
while ((j = k << 1) <= size) {  3O:gZRxK  
if (j < size %26amp;%26amp; queue[j] j++; N!fTt,  
if (queue[k]>queue[j]) file://不用交换 1qw*mV;W)_  
break; ]i3 1@O  
SortUtil.swap(queue,j,k); 3',|HA /x  
k = j; $RYsqX\v  
} CqRG !J  
} BN?OvQ  
private void fixUp(int k) { ?>_[hZ  
while (k > 1) { WzC_M>_  
int j = k >> 1; IfH*saN7  
if (queue[j]>queue[k]) |G5Me  
break; %b H1We  
SortUtil.swap(queue,j,k); KKz{a{ePY%  
k = j; j5,vSh~q;'  
} ItZqLUJ m  
} Fnnk }I}  
CCp8,  
} #N=!O/Y  
u49v,,WGw  
} eN/o}<(e  
se)vi;J7K  
SortUtil: q@i,$R  
Q)7iu  
package org.rut.util.algorithm; SYPG.O?I  
e Akjpc  
import org.rut.util.algorithm.support.BubbleSort; 7n-;++a5]  
import org.rut.util.algorithm.support.HeapSort; `@acQs;0  
import org.rut.util.algorithm.support.ImprovedMergeSort; Qg\OJmv  
import org.rut.util.algorithm.support.ImprovedQuickSort; JY+ N+c\  
import org.rut.util.algorithm.support.InsertSort; ccUq!1  
import org.rut.util.algorithm.support.MergeSort; ?3Ytn+Py  
import org.rut.util.algorithm.support.QuickSort; =+T$1  
import org.rut.util.algorithm.support.SelectionSort; wz-#kH5?  
import org.rut.util.algorithm.support.ShellSort; HbRDa  
p/4\O  
/** '\ $2+*  
* @author treeroot 0$-N  
* @since 2006-2-2 cMCGaaLU  
* @version 1.0 poqcoSL"}  
*/ r.5}Q?  
public class SortUtil { *LTFDC  
public final static int INSERT = 1; &uh|! lD  
public final static int BUBBLE = 2; ;E8.,#/a  
public final static int SELECTION = 3; <5s51b <  
public final static int SHELL = 4; u;fD4CA  
public final static int QUICK = 5; *Txt`z[|  
public final static int IMPROVED_QUICK = 6; 9Ytf7NpR  
public final static int MERGE = 7; Ylc[ghx  
public final static int IMPROVED_MERGE = 8; )F\tU  
public final static int HEAP = 9; bp06xHMu  
ohFUy}y  
public static void sort(int[] data) { - I$qe Xy  
sort(data, IMPROVED_QUICK); i)Hjmf3  
} $nB4Ie!WcR  
private static String[] name={ ,;aELhMZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fZqMznF  
}; nQ*9|v4  
E,]G Ek  
private static Sort[] impl=new Sort[]{ 'WEypz  
new InsertSort(), ;+%(@C51GE  
new BubbleSort(), zCvt"!}RRa  
new SelectionSort(), s3+^q  
new ShellSort(), .^<4]  
new QuickSort(), ]UR@V;JG  
new ImprovedQuickSort(), }n+#o!uEf  
new MergeSort(), 6]=$c<.&  
new ImprovedMergeSort(), ^:.=S`,^  
new HeapSort() 35dbDgVz$  
}; no*p`a *  
T+_pmDDN  
public static String toString(int algorithm){ 5 ",@!1ju  
return name[algorithm-1]; 8Bvc# +B  
} iWbrX1 I+  
[NE:$@  
public static void sort(int[] data, int algorithm) { ~ kdxJP"  
impl[algorithm-1].sort(data); 5]/i[T_  
} bk@F/KqL  
~bSPtH ]6d  
public static interface Sort { W}<'Y@[ ,  
public void sort(int[] data); lg)jc3  
} 1gEeZ\B-&  
1m*fkM#  
public static void swap(int[] data, int i, int j) { dqU bJc]  
int temp = data; ?mdgY1  
data = data[j]; a#iJXI  
data[j] = temp; 'eNcQJh  
} i ez@j  
} -^m]Tb<u  
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