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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。 s[Ur~Wvn  
插入排序: \sA*V%n  
Yh)Isg|0>  
package org.rut.util.algorithm.support; Y[SU&LM  
|/ }\6L]  
import org.rut.util.algorithm.SortUtil; y3<Y?M4  
/** T%Pp*1/m7  
* @author treeroot vOgC>_x7  
* @since 2006-2-2 LG]3hz9^9  
* @version 1.0 z* <y5  
*/ 0ji q-3V)  
public class InsertSort implements SortUtil.Sort{ ?U7) XvQ  
aTzDew  
/* (non-Javadoc) -@&1`@):{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6/ `.(fL1  
*/ 4eH.9t  
public void sort(int[] data) { ai*b:Q  
int temp; q_Lo3|t i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nmjm<Bu  
} i5F:r|  
} *xR 2)u  
} rNl.7O9b  
A-ZmG7xk  
} B ZMu[M  
`)4a[thp  
冒泡排序: n,O5".aa<  
6> {r6ixs1  
package org.rut.util.algorithm.support; \.gEh1HW  
3I 0eW%,  
import org.rut.util.algorithm.SortUtil; 4@;-%H&7  
@$eT~ C  
/** /hv#CB>1x  
* @author treeroot ug`NmIQP  
* @since 2006-2-2 ;PyZ?Z;  
* @version 1.0 >\A8#@1  
*/ k#:2'!7G  
public class BubbleSort implements SortUtil.Sort{ (5$ZvXx?}  
AD('=g J  
/* (non-Javadoc) VzlDHpG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K^t?gt@k}  
*/ rgcWRt  
public void sort(int[] data) { <f~Fl^^8  
int temp; Bf4%G,o5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a1N!mQ^  
if(data[j] SortUtil.swap(data,j,j-1); Wd(86idnc  
} }vt%R.u  
} v0l_w  
} $WW)bP d4^  
} D';eTy Y  
#:ns64|  
} G"y.Z2$  
PKq-@F%X  
选择排序: 8X&Ya =  
"?.~/@  
package org.rut.util.algorithm.support; uM(UO,X  
"zZI S6j  
import org.rut.util.algorithm.SortUtil; 3,aN8F1;C  
y~<@x.  
/** dv N<5~  
* @author treeroot 1QJBb \  
* @since 2006-2-2 7k=fZ$+O  
* @version 1.0 m W`oq  
*/ g2p"LWex-  
public class SelectionSort implements SortUtil.Sort { T,JA#Rk|1N  
UmKX*T9  
/* eR!G[Cw-  
* (non-Javadoc) @=uN\) 1  
* $1*3!}_0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gH:ArfC  
*/ Wf>^bFb"$  
public void sort(int[] data) { t0m*PJcF  
int temp; W$?e<@  
for (int i = 0; i < data.length; i++) { 'qv;sB.  
int lowIndex = i; k<4P6?  
for (int j = data.length - 1; j > i; j--) { 19d6]pJ5  
if (data[j] < data[lowIndex]) { `Xo 4q3  
lowIndex = j; XY+y}D %  
} X,v4d~>]  
} msk/p>{O  
SortUtil.swap(data,i,lowIndex); $->d!  
} Q1tpCT  
} 6/mF2&&g  
rj  H`  
} So4nJ><p  
s'_,:R\VM>  
Shell排序: ms~8QL  
.`C V^\  
package org.rut.util.algorithm.support; Nw](".  
( v#pj8aE  
import org.rut.util.algorithm.SortUtil; Rs$5PdH  
(a{ZJI8_  
/** >xd<YwXZ  
* @author treeroot t<b3K-  
* @since 2006-2-2 [N|xzMe  
* @version 1.0 {0's~U+@  
*/ Q;26V4  
public class ShellSort implements SortUtil.Sort{ ^b53}f8H  
$3\yf?m}q  
/* (non-Javadoc) ^ @.G,u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XT||M)#  
*/ j Selop>N  
public void sort(int[] data) { L0&S0HG   
for(int i=data.length/2;i>2;i/=2){ ^,7=X8Su  
for(int j=0;j insertSort(data,j,i); *_)E6Y?9  
} d\Jji 6W  
} lfS;?~W0k  
insertSort(data,0,1); !dv-8C$U  
} +{rJ[J/g  
 *W^=XbG  
/** 8B@J Fpg^  
* @param data #/WAzYt{  
* @param j 5N1 K~".  
* @param i =s[ &;B`s  
*/ Gc;B[/:  
private void insertSort(int[] data, int start, int inc) { cgyo_ k  
int temp; 4 iH&:Al  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v.`+I-\.z)  
} :t2B^})\  
} dERc}oAh(  
} *bZ\@Qm  
#AncOo  
} zrx JN  
`-D$Fsl  
快速排序: VG#Q;Xd}  
V.,bwPb{9  
package org.rut.util.algorithm.support; "=A|K~b  
B| Q6!  
import org.rut.util.algorithm.SortUtil; rl|Q)A{  
KO-a; [/  
/** $Sb@zLi)  
* @author treeroot ;c)! @GoA  
* @since 2006-2-2 @+dHF0aXd  
* @version 1.0 _0]QS4a][c  
*/ uL>:tb  
public class QuickSort implements SortUtil.Sort{ eycV@|6u*  
jYdV?B  
/* (non-Javadoc) 8vJdf9pB*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m"-G6BKS  
*/ :r39wFi  
public void sort(int[] data) { l;5`0N?QO  
quickSort(data,0,data.length-1); }jcIDiSu  
} Opry`}5h  
private void quickSort(int[] data,int i,int j){ n2E4!L|q  
int pivotIndex=(i+j)/2; MF|*AB|E  
file://swap a4u^f5)@  
SortUtil.swap(data,pivotIndex,j); s]bPV,"p  
#PH#2/[  
int k=partition(data,i-1,j,data[j]); ]BfR.,,  
SortUtil.swap(data,k,j); T?e9eYwS  
if((k-i)>1) quickSort(data,i,k-1); b_ JWnh  
if((j-k)>1) quickSort(data,k+1,j); I{<;;;a  
F '#^`G9  
} ` @>ZGL:  
/** (txt8q  
* @param data i+RD]QL  
* @param i 'Q`C[*c  
* @param j ^;64!BaK  
* @return h60\ Y 8  
*/ IQoH@l&Xk  
private int partition(int[] data, int l, int r,int pivot) { sU*3\  
do{ UKYupLu5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); p5`ZyD ]+  
SortUtil.swap(data,l,r); s*+ZYPk  
} Z~R dFC  
while(l SortUtil.swap(data,l,r); Mz}i[|U\  
return l; 54wM8'+  
} .xnQd^qoac  
Q;@X2 JSp  
} \6LcVik  
zf7rF}  
改进后的快速排序: [,nfAY  
J=V yyUB  
package org.rut.util.algorithm.support; kdd7X bw-  
kDg{ >mf  
import org.rut.util.algorithm.SortUtil; wXcMt>3  
:o<N!*pT  
/** H8<m9zDvl  
* @author treeroot c&A]pLn+x  
* @since 2006-2-2 z0;9SZ9  
* @version 1.0 4)E|&)-fu8  
*/ }8 \|1@09  
public class ImprovedQuickSort implements SortUtil.Sort { uegb;m  
#!Ze\fOC  
private static int MAX_STACK_SIZE=4096; mf~Lzp  
private static int THRESHOLD=10; v0u\xX[H;  
/* (non-Javadoc) QglYU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?d#Lr*m  
*/ !4L#$VG  
public void sort(int[] data) { ?.~]mvOR  
int[] stack=new int[MAX_STACK_SIZE]; V-:`+&S{^  
9kUV1?  
int top=-1; Gzj3Ka  
int pivot; { $X X  
int pivotIndex,l,r; Jtpa@!M  
&EGY+p|2Y  
stack[++top]=0; n)Hk8)^8  
stack[++top]=data.length-1; RAdvIIQp:  
GA7u5D"0  
while(top>0){ ^xmZ|f-  
int j=stack[top--]; 2!{N[*)  
int i=stack[top--]; ?U$}Rsk{#  
.u&|e  
pivotIndex=(i+j)/2; bt0djJRw  
pivot=data[pivotIndex]; Gk{W:866  
$u&|[vcP0  
SortUtil.swap(data,pivotIndex,j); |O%:P}6c  
O<bDU0s{M  
file://partition z,M'Tr.1|  
l=i-1; n~9 i^  
r=j; nx D'r  
do{ tb:    
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _,t&C7Yf;  
SortUtil.swap(data,l,r); M,ppCHy/$  
} ?C FS}v  
while(l SortUtil.swap(data,l,r); TJE% U0Ln  
SortUtil.swap(data,l,j); I>d I[U  
Wf_CR(  
if((l-i)>THRESHOLD){ 4@= aa  
stack[++top]=i; d RHlx QUn  
stack[++top]=l-1; BQE{  
} m\1VF\  
if((j-l)>THRESHOLD){ !W 0P `i<  
stack[++top]=l+1; !+5C{Hs2  
stack[++top]=j; 4Fh&V{`W  
} `3]Rg0g&Xe  
tx gvVQ  
} $R8>u#K!  
file://new InsertSort().sort(data); <&KLo>B^  
insertSort(data); /cM 5  
} ^zKt{a  
/** a4Ls^  
* @param data B<(Pd  
*/ omNpE_  
private void insertSort(int[] data) { vuAQm}A4'g  
int temp; 0T1HQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jC#`PA3m=  
} { ( _B  
} H\ {E%7^h-  
} fm[_@L% x  
C{DlcZ<  
} 9e0C3+)CY  
.@fK;/OuC  
归并排序: C{8i7D  
kboizJp  
package org.rut.util.algorithm.support; <>SR4  
F\zkyk 4  
import org.rut.util.algorithm.SortUtil; xq#U 4E  
<'yf|N!9G  
/** "[#@;{@Gt  
* @author treeroot \FIa,5k8  
* @since 2006-2-2 Gv!BB=ir(  
* @version 1.0 #4Dn@Gqh.Y  
*/ E"G:K`Q  
public class MergeSort implements SortUtil.Sort{ Y]hV-_2+Do  
bl$+8 !~  
/* (non-Javadoc) 1 ,#{X3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jB5>y&+  
*/ kA;xAb+U3  
public void sort(int[] data) { \8=e |a5`  
int[] temp=new int[data.length]; )!'Fa_$ e  
mergeSort(data,temp,0,data.length-1); -08&&H  
} vsu@PuqH  
_)OA$  
private void mergeSort(int[] data,int[] temp,int l,int r){ a v'd%LZP  
int mid=(l+r)/2; W`w5jk'0^=  
if(l==r) return ; Oqd"0Qt-  
mergeSort(data,temp,l,mid); #;wkr))  
mergeSort(data,temp,mid+1,r); ;% /6Y~/  
for(int i=l;i<=r;i++){ +vSCR (n  
temp=data; %bCcsdK  
} sN6 0o 7.  
int i1=l; * i=?0M4S  
int i2=mid+1; Qw3a"k-  
for(int cur=l;cur<=r;cur++){ Z}sG3p  
if(i1==mid+1) +^/Nil  
data[cur]=temp[i2++]; :5TXA  
else if(i2>r) #)W8.  
data[cur]=temp[i1++]; 3X88x-3  
else if(temp[i1] data[cur]=temp[i1++]; C1ZFA![  
else zF[3%qZE:T  
data[cur]=temp[i2++]; U@o2gjGN  
} g`%ED0aR  
} GVjv** U  
g_rA_~dh  
} e8~62O^  
9f@#SB_H  
改进后的归并排序: 5QqJ I#4~  
kGB#2J  
package org.rut.util.algorithm.support; ()+jrrK  
W /~||s  
import org.rut.util.algorithm.SortUtil; w,M1`RsK  
JxX jDYrU  
/** wc<2Uc  
* @author treeroot ]7#^])>  
* @since 2006-2-2 LV}UBao5n  
* @version 1.0 OhSt6&+  
*/ |%M{k A-  
public class ImprovedMergeSort implements SortUtil.Sort { sYAG,r>h  
bqZ?uvc3  
private static final int THRESHOLD = 10; O4 +SD  
yDCooX0  
/* ROJ'-Vde9  
* (non-Javadoc) y9V;IXhDc  
* "ay,Lr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;a!h.8UJPI  
*/ jyY^iQ.2  
public void sort(int[] data) { cc2d/<:  
int[] temp=new int[data.length]; ?`vM#)  
mergeSort(data,temp,0,data.length-1); *@-q@5r}!  
} 9J-!o]f .b  
!7O=<  
private void mergeSort(int[] data, int[] temp, int l, int r) { yS:IRI.  
int i, j, k; J[<D/WIH  
int mid = (l + r) / 2; ;55tf l  
if (l == r) ?L<UOv7;t  
return; b6LC$"t0  
if ((mid - l) >= THRESHOLD) E]HND.`*>  
mergeSort(data, temp, l, mid); D+*uKldS;  
else y]z)jqX<  
insertSort(data, l, mid - l + 1); ?1-n\ka  
if ((r - mid) > THRESHOLD) ="#:=i]  
mergeSort(data, temp, mid + 1, r); =\ti<  
else "6I-]:K-  
insertSort(data, mid + 1, r - mid); P-E'cb%ub  
9a"Y,1  
for (i = l; i <= mid; i++) { )$gsU@H -  
temp = data; [T}%q"<  
} %#S"~)  
for (j = 1; j <= r - mid; j++) { r|JiGj^om  
temp[r - j + 1] = data[j + mid]; < tu[cA>  
} Ab^>z  
int a = temp[l]; l ))~&  
int b = temp[r]; %U=S6<lbj;  
for (i = l, j = r, k = l; k <= r; k++) { j(@g   
if (a < b) {  H3/Y  
data[k] = temp[i++]; Hg gR=>s  
a = temp; gJcXdv=]2  
} else { {E3<GeHw4  
data[k] = temp[j--]; {.' ,%)  
b = temp[j]; `aO@N(  
} RF,=bOr19  
} SBN_>;$c5}  
} &G7)s%q  
lH,]ZA./  
/** XoH[MJC  
* @param data *Lb(urf  
* @param l 0?5%  
* @param i Fl#VKU3h  
*/ ERX|cc  
private void insertSort(int[] data, int start, int len) { !5E%W[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); XW&8T"q7  
} Q[ 9rA  
} ,/w852|ub  
} [F AOp@7W  
} u]]5p[ |S  
[)J49  
堆排序: Vlp*'2VO  
[MQJ71(3  
package org.rut.util.algorithm.support; [o[v"e\w  
`%mBu`A  
import org.rut.util.algorithm.SortUtil; X#Dhk6  
vS J<  
/** Z68Wf5@to&  
* @author treeroot 9 .&Or4>  
* @since 2006-2-2 :,}:c%-^"  
* @version 1.0 nuQLq^e  
*/ _#^A:a^e8  
public class HeapSort implements SortUtil.Sort{  'QekQ];  
rmg";(I  
/* (non-Javadoc) |S>J<]H p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cO=UswIkwO  
*/ =-Q  
public void sort(int[] data) { %)6 :eIS  
MaxHeap h=new MaxHeap(); zfr(dQ  
h.init(data); ?%za:{  
for(int i=0;i h.remove(); r"u(!~R  
System.arraycopy(h.queue,1,data,0,data.length); 'Qs 3  
} %:be{Y6  
RZ/+ K=  
private static class MaxHeap{ Og;$P 'U  
C5sN[  
void init(int[] data){ '+q'H  
this.queue=new int[data.length+1]; sw qky5_K  
for(int i=0;i queue[++size]=data; ;@ll  
fixUp(size); m)[wZP*e  
} h@>rjeY@  
} G5QgnxwP2  
&J&w4"0N'  
private int size=0; '/yx_R K2?  
$ Op/5j  
private int[] queue; HDW\S#  
1:;&wf  
public int get() { LnRi+n[@7  
return queue[1]; ` .sIZku  
} t 1RwB23  
8#Z\}gGz  
public void remove() { %dk$K!5D0  
SortUtil.swap(queue,1,size--); "za*$DU  
fixDown(1); k0 e|8g X  
} #Mem2cz  
file://fixdown gH{\y5%rO  
private void fixDown(int k) { [>Kxm  
int j; zk 'e6  
while ((j = k << 1) <= size) { 7dg 5HH  
if (j < size %26amp;%26amp; queue[j] j++; qYu!:xa8  
if (queue[k]>queue[j]) file://不用交换 G`9F.T_Z^)  
break; %`T^qh_dE  
SortUtil.swap(queue,j,k); h&)vdCCk  
k = j; :jKXKY+T  
} z`r4edk3  
} CQuvbAo  
private void fixUp(int k) {  RoM*Qjw  
while (k > 1) { wmcp`8w.  
int j = k >> 1; rW%'M#! =  
if (queue[j]>queue[k]) ~tj7zI6  
break; P2:Q+j:PX  
SortUtil.swap(queue,j,k); X"khuyT_  
k = j; 8JFkeU%yO  
} ah6F^Kpl{  
} %k;FxUKi  
+!V%Q  
}  DIu72\  
gmAKW4(  
} z#E,96R  
~ {7N TW  
SortUtil: ohtn^o;C}  
j&G~;(DY  
package org.rut.util.algorithm; cV!/  
(_n8$3T75  
import org.rut.util.algorithm.support.BubbleSort; l<K.!z<-:8  
import org.rut.util.algorithm.support.HeapSort; h }%M  
import org.rut.util.algorithm.support.ImprovedMergeSort; MVL }[J  
import org.rut.util.algorithm.support.ImprovedQuickSort; tA u|8aL  
import org.rut.util.algorithm.support.InsertSort; B?YfOSF=5  
import org.rut.util.algorithm.support.MergeSort; W%XS0k}x  
import org.rut.util.algorithm.support.QuickSort; ?o DfI  
import org.rut.util.algorithm.support.SelectionSort; l'{goyf  
import org.rut.util.algorithm.support.ShellSort; Y)5uK:)^  
rnBeL _8C  
/** 4a\+o]  
* @author treeroot ]jY)M<:J4  
* @since 2006-2-2 n]{}C.C=  
* @version 1.0 |b;M5w?  
*/ 6C51:XQO  
public class SortUtil { oD}FJvV  
public final static int INSERT = 1; WT {Cjn  
public final static int BUBBLE = 2; Vq7 kA "  
public final static int SELECTION = 3; "yq;{AGOGl  
public final static int SHELL = 4; \w_[tPz}  
public final static int QUICK = 5; >E,L"&_j  
public final static int IMPROVED_QUICK = 6; BHE =Zo  
public final static int MERGE = 7; np>!lF:  
public final static int IMPROVED_MERGE = 8; KeOBbe  
public final static int HEAP = 9; kuud0VWJ  
MGC0^voe  
public static void sort(int[] data) { EkAqFcKLq  
sort(data, IMPROVED_QUICK); yrYaKh  
} l3|>*szX  
private static String[] name={ gV44PI6h  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9*Twx&  
}; iR5soIR  
E|uXi)!.x  
private static Sort[] impl=new Sort[]{ \*"0wR;[K  
new InsertSort(), 4sE=WPKF#  
new BubbleSort(), z'K7J'(R  
new SelectionSort(), G}xBYc0b  
new ShellSort(), N)y;owgo  
new QuickSort(), l YA+k5  
new ImprovedQuickSort(), %|* y/m  
new MergeSort(), #YVDOR{z  
new ImprovedMergeSort(), 1;[ <||K  
new HeapSort() XN%D`tbvJ  
}; 3:Egqw  
$/#)  
public static String toString(int algorithm){ ]Oh>ECA|D  
return name[algorithm-1]; CrX-?$  
} ?iO^b.'I#  
7IW7'klkvD  
public static void sort(int[] data, int algorithm) { \mit&EUh}  
impl[algorithm-1].sort(data); kV%y%l(6  
} ,^66`C[G  
ywtDz8!^u  
public static interface Sort { +Ws}a  
public void sort(int[] data); EMH}VigR  
} Cu<ojN- $  
.z7f_KX^  
public static void swap(int[] data, int i, int j) { pnb$lpxt  
int temp = data; iZ;jn8  
data = data[j]; #{`NJ2DU]  
data[j] = temp; {"(|oIo{  
} k ZEy  
} n ,%^R  
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