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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。 <r_L-  
插入排序: \,<5U F0  
m{(G%n>E&  
package org.rut.util.algorithm.support; 'lPt.*Y<u  
vf=b5s(7Q  
import org.rut.util.algorithm.SortUtil; <IWO:7*#  
/** I:4m]q b  
* @author treeroot $F|3VQ~  
* @since 2006-2-2 [whX),3>  
* @version 1.0 l6^IX0&p  
*/ c2aX_ "  
public class InsertSort implements SortUtil.Sort{ ZXP9{Hh  
3g!tk9InG  
/* (non-Javadoc) UADD 7d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oe<9CK:?>  
*/ :J|t! `  
public void sort(int[] data) { F ] e]  
int temp; & 5!.!Z3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :"Vfn:Q  
}  jpc bW  
} YK[PC]w  
} r=Up-(j  
PNwXZ/N%  
} Ob:}@jj  
N/ 7Q(^  
冒泡排序: E1(2wJ-3"  
2!Ip!IQ:  
package org.rut.util.algorithm.support; ZJCD)?]=3  
ZP>KHiA  
import org.rut.util.algorithm.SortUtil; a}~Xns  
>syQDB  
/** HmWU;9Vn+  
* @author treeroot h,-8( S  
* @since 2006-2-2 tDF=Iqu)a  
* @version 1.0 =D<{uovQB  
*/ P`JO6O:&  
public class BubbleSort implements SortUtil.Sort{ kPt9(E]  
yi7m!+D3  
/* (non-Javadoc) 2&st/y(hs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %#!pAUP\&  
*/ F9DY\EI  
public void sort(int[] data) { [X +E  
int temp; 3l?D%E]P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7Sc._G{[%  
if(data[j] SortUtil.swap(data,j,j-1); ~f/nq/8  
} cVHv>nd#  
} =.q Zgcg  
} $is|B9B  
} m&EJ @,H  
';g]!XsY)  
} PP\nR @  
*\9JIi 2  
选择排序: H5@N<v5 u  
RQzcsO  
package org.rut.util.algorithm.support; rQ0V3x1"Qx  
*XRAM.  
import org.rut.util.algorithm.SortUtil; h,:8TMJRRN  
"i+fO&LpZ  
/** "c[ D 0{\{  
* @author treeroot 9$-V/7@)  
* @since 2006-2-2 DOi\DJV!  
* @version 1.0 C_>dJYM  
*/ t@K N+ C  
public class SelectionSort implements SortUtil.Sort { h^{D "  
(E'f'g  
/* Ne^md  
* (non-Javadoc) %O$4da"y  
* u`Ew^-">  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ![ & go  
*/ bERYC|  
public void sort(int[] data) { NXQdyg,  
int temp; y:TLGQ0  
for (int i = 0; i < data.length; i++) { JTH8vk:@  
int lowIndex = i; y#[PQ T  
for (int j = data.length - 1; j > i; j--) { %G~ f>  
if (data[j] < data[lowIndex]) { cN/8 b0C  
lowIndex = j; cTy;?(E  
} zD>:Kj5  
} < * )u\A  
SortUtil.swap(data,i,lowIndex); F8(6P1}E  
} \}O'?)(1  
} ZJL[#}*  
l56D?E8  
} [12^NEt  
~~h@(2/Q>x  
Shell排序: jl# )CEx  
Yb57Xu  
package org.rut.util.algorithm.support; q$[x*!~  
Rk#@{_  
import org.rut.util.algorithm.SortUtil; F1skI _!  
&5Ai&<q"p  
/** /IDfGAE  
* @author treeroot XWQp-H.  
* @since 2006-2-2 Z4U8~i  
* @version 1.0 >L6V!  
*/ #q`-"2"|  
public class ShellSort implements SortUtil.Sort{ 1:I47/  
$0[T=9q <+  
/* (non-Javadoc) MjIp~?*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tOn_S@/r  
*/ n !ty\E  
public void sort(int[] data) { L_Q1:nL-0  
for(int i=data.length/2;i>2;i/=2){ X|Gsf= 1S  
for(int j=0;j insertSort(data,j,i); e<_p\LiOS  
} ocwh*t)<k  
} wIi_d6?  
insertSort(data,0,1); 2=pVX  
} )*[3Imq/  
cC'{+j8-a  
/** ?zwPF;L*  
* @param data R8 1z|+c|_  
* @param j |2,'QTm=  
* @param i l@-J&qG  
*/ OSc&n>\t  
private void insertSort(int[] data, int start, int inc) { cnh\K.*}_x  
int temp; ]V!q"|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~`Q8)(y<#$  
} u_.`I8qa  
} &P Ru[!  
} <&3qFK*9r  
!|P>%bi  
} \wY? 6#;  
2+pLDIIT  
快速排序: Xz`?b4i  
=y" lX{}G  
package org.rut.util.algorithm.support; @}&o(q1M0  
>mzK96  
import org.rut.util.algorithm.SortUtil; a%2r]:?^?  
{9wBb`.n^  
/** SOo/~ giz|  
* @author treeroot I~lX53D  
* @since 2006-2-2 ]m0MbA  
* @version 1.0 bg$df 0  
*/ `.PZx%=  
public class QuickSort implements SortUtil.Sort{ ax7]>Z=%d"  
7T \}nX1  
/* (non-Javadoc) CrHH Ob  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a}l^+  
*/ \ ]  
public void sort(int[] data) { RH+3x7 l  
quickSort(data,0,data.length-1); 7o?6Pv%HJC  
} fDo )~t*~  
private void quickSort(int[] data,int i,int j){ Bor_Kib  
int pivotIndex=(i+j)/2; ;hsgi|Cy-  
file://swap "qEHK;  
SortUtil.swap(data,pivotIndex,j); SJhcmx+  
M%H<F3  
int k=partition(data,i-1,j,data[j]); uZ mi  
SortUtil.swap(data,k,j); JwR]!  
if((k-i)>1) quickSort(data,i,k-1); Yrp WGK520  
if((j-k)>1) quickSort(data,k+1,j); qv<[f=X9|  
oy90|.]G  
} 3{o5AsVv  
/** h amn9  
* @param data <6k5nEh  
* @param i  ol^J-  
* @param j P@LYa_UFsN  
* @return V[>MKB(  
*/ XBv:$F.>$  
private int partition(int[] data, int l, int r,int pivot) { M/ @1;a@\  
do{ yP\KIm!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +,=DUsI}  
SortUtil.swap(data,l,r); <_&H<]t%rI  
} > t *+FcD  
while(l SortUtil.swap(data,l,r); L1#z'<IO  
return l; ws:@Pe4AF  
} |}paa  
A$G>D3  
} IDbqhZp(  
Y*iYr2?;  
改进后的快速排序: l v]TE"  
f,Vj8@p)x  
package org.rut.util.algorithm.support; w|?<;+  
1MI/:vy-  
import org.rut.util.algorithm.SortUtil; R.Xh&@f`  
X 10(oT  
/** dwOB)B@{H  
* @author treeroot "`Q~rjc$2  
* @since 2006-2-2 Q:$<`K4)  
* @version 1.0 qn}w]yGW  
*/ ,.Ac= "f  
public class ImprovedQuickSort implements SortUtil.Sort { [pf78  
)F;`07  
private static int MAX_STACK_SIZE=4096; Q/rOIHiI  
private static int THRESHOLD=10; >YuBi:z  
/* (non-Javadoc) 0?525^   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I, 9!["^|  
*/ @O b$w1c  
public void sort(int[] data) { _W]qV2j  
int[] stack=new int[MAX_STACK_SIZE]; L 1=HD  
E/9h"zowS  
int top=-1; ,a&N1G.  
int pivot; *9((X,v@/  
int pivotIndex,l,r; ej dYh $  
 }6SfI;  
stack[++top]=0; f Co-ony  
stack[++top]=data.length-1; Ht,_<zP;  
q h;ahX~  
while(top>0){ 4PUSFZK?  
int j=stack[top--]; w[@>k@=  
int i=stack[top--]; 7!Z\B-_,  
-MZ LkSU  
pivotIndex=(i+j)/2; 6tXx--Nh  
pivot=data[pivotIndex]; ,w%cX{  
%(h-cuhq  
SortUtil.swap(data,pivotIndex,j); }MAvEaUd  
a]^hcKo4  
file://partition K@lZuQ.1  
l=i-1; s"b()JP  
r=j; Z_{`$nW  
do{ 1qXqQA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lquY_lrri  
SortUtil.swap(data,l,r); +9db1:  
} FWqnlK#  
while(l SortUtil.swap(data,l,r); 7g1" s1~or  
SortUtil.swap(data,l,j); cwi HHf>  
&!uw;|%  
if((l-i)>THRESHOLD){ Htn'(Q  
stack[++top]=i; )3g7dtq}  
stack[++top]=l-1; ^LgaMmz  
} X6s6fu;  
if((j-l)>THRESHOLD){ =~Oi:+L  
stack[++top]=l+1; "5*n(S{ks  
stack[++top]=j; p?S:J`q  
} e R"XXF0u  
|r*btyOJk  
} FT'_{e!M  
file://new InsertSort().sort(data); 6v7H?4  
insertSort(data); S'~Zlv 3`  
} :Z|lGH =  
/** c(jF^ 0~  
* @param data | _/D-m*  
*/ 1(6B|w5+  
private void insertSort(int[] data) { 9 ! [oJ3  
int temp; vUD,%@k9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #;GIvfW  
} /rp.H'hC  
} Gxk=]5<7  
} Qzy[  
{H OvJ`tM  
} yyZ}qnbx]  
Bs2.$~   
归并排序: k{ >rI2;  
QA_SS'*  
package org.rut.util.algorithm.support; v#u]cmI  
vaQZ1a,  
import org.rut.util.algorithm.SortUtil; HPVW2Y0_N  
o3*IfD  
/** (3z: ;  
* @author treeroot 9!sx  
* @since 2006-2-2 jR<yV  
* @version 1.0 `M?C(  
*/ c|q!C0X[  
public class MergeSort implements SortUtil.Sort{ - Z?rx5V;t  
ldcYw@KQ  
/* (non-Javadoc) }}Ah-QU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) seWYY $$  
*/ ]Hk8XT@Q+  
public void sort(int[] data) { <4s$$Uw}6%  
int[] temp=new int[data.length]; 5 OR L  
mergeSort(data,temp,0,data.length-1); >o #^r;  
} '@'~_BBZP  
\z!*)v/{-  
private void mergeSort(int[] data,int[] temp,int l,int r){ is&A_C7yg  
int mid=(l+r)/2; )%p.v P'p  
if(l==r) return ; o_   
mergeSort(data,temp,l,mid); Rfh#JO@%[  
mergeSort(data,temp,mid+1,r); zA[6rYXY  
for(int i=l;i<=r;i++){ PZ2$ [s0W  
temp=data; k]FP1\Y  
} aH<BqD[#  
int i1=l; Di{T3~fqU  
int i2=mid+1; bv$g$  
for(int cur=l;cur<=r;cur++){ 5^'PjtW6  
if(i1==mid+1) -DDH)VO  
data[cur]=temp[i2++]; +f/G2qY!t  
else if(i2>r) D&_Ir>"\  
data[cur]=temp[i1++]; !FOPFPn  
else if(temp[i1] data[cur]=temp[i1++]; z:f[<`,GT  
else tK)E*!  
data[cur]=temp[i2++]; h-`Jd>u"  
} w6>'n }  
} NikY0=i  
!f\,xa|M  
} c]jK Y<  
y05(/NH>  
改进后的归并排序: pUby0)}t  
hKv3;jcd  
package org.rut.util.algorithm.support; h,B ]5Of  
`btw*{.[  
import org.rut.util.algorithm.SortUtil; vH_QSx;C#  
nW2 fB8yq  
/** _U)BOE0o  
* @author treeroot K~**. NF-n  
* @since 2006-2-2 D*3\4=6x  
* @version 1.0 *44^M{ti<  
*/ l]R O'  
public class ImprovedMergeSort implements SortUtil.Sort { D%k%kg0,  
vtw{ A}  
private static final int THRESHOLD = 10; |0YDCMq(  
)M(;:#le  
/* c;DWSgIw  
* (non-Javadoc) A,-UW+:  
* ZY-UQ4_|u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X8l[B{|  
*/ {IEc{y7?gO  
public void sort(int[] data) { =fa!"$J3  
int[] temp=new int[data.length]; HU ]Yv+3   
mergeSort(data,temp,0,data.length-1); g2L^cP>2  
} <)c/PI[j  
N@J "~9T  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0-#SvTf>;:  
int i, j, k; b['Jr% "O  
int mid = (l + r) / 2; W6f?/{Oo8  
if (l == r) [*zB vj}G  
return; HFYN(nz}[  
if ((mid - l) >= THRESHOLD) qPsf`nI7  
mergeSort(data, temp, l, mid); YCod\}3  
else >0kn&pe7#T  
insertSort(data, l, mid - l + 1); y7aBF13Kl  
if ((r - mid) > THRESHOLD) HHa XK  
mergeSort(data, temp, mid + 1, r); ^t4T8ejn  
else -U;2 b_  
insertSort(data, mid + 1, r - mid); uP bvN[~t  
Ut4cli&cC  
for (i = l; i <= mid; i++) { VS0 &[bl  
temp = data; l6ayV  
} NT?Gl(  
for (j = 1; j <= r - mid; j++) { 7 J$  
temp[r - j + 1] = data[j + mid];  M\zM-B  
} 5]yQMY\2)  
int a = temp[l]; v^2q\A-?  
int b = temp[r]; c6gRXp'ID  
for (i = l, j = r, k = l; k <= r; k++) { 1HYrJb,d  
if (a < b) { :f (UZmV$  
data[k] = temp[i++]; xab1`~%K  
a = temp; 6 J[ {?,  
} else { (+}H ih  
data[k] = temp[j--]; wi/Fx=w  
b = temp[j]; ; V)pXLE  
} ]pi"M 3f_  
} n'a=@/  
} JK:i-  
Lqy]bnY  
/** ?EF[OyE  
* @param data M]&F1<  
* @param l Xy[O  
* @param i ) jBPt&  
*/ K?0f)@\nx  
private void insertSort(int[] data, int start, int len) { "<6X=|C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {xb8H  
} dLl/V3C6t  
} -Z )j"J  
} 5P~{*of  
} 0OLE/T<Xv  
xu9K\/{7  
堆排序: SYkLia(Ty  
*'D( j#&  
package org.rut.util.algorithm.support; k2{*WF  
5tUp[/]pl  
import org.rut.util.algorithm.SortUtil; Dizc#!IGU  
>t_5( K4  
/** 5e tbJk  
* @author treeroot 'J(rIH3U  
* @since 2006-2-2 $<R\|_6J  
* @version 1.0 ?v8.3EE1\o  
*/ nojJGeW%  
public class HeapSort implements SortUtil.Sort{ 4D(5WJ&  
yn=BO`sgW  
/* (non-Javadoc) "w3#2q&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6qfL-( G  
*/ 7=yV8.cD  
public void sort(int[] data) { Zd$a}~4~  
MaxHeap h=new MaxHeap(); ,h1 z8.wD|  
h.init(data); B3 fKb#T  
for(int i=0;i h.remove(); Q;A1&UA2  
System.arraycopy(h.queue,1,data,0,data.length); =+24jHs  
} # +OEO  
Q/'jw yj_  
private static class MaxHeap{ K,f*}1$qM  
u0^Vy#@_  
void init(int[] data){ TC7&IqT  
this.queue=new int[data.length+1]; 3ZRi@=kWz  
for(int i=0;i queue[++size]=data; /'KCW_Q  
fixUp(size);  l* C>  
} ^Pqj*k+F  
} XV)<Oavs  
jI})\5<R  
private int size=0; :E ]Ys  
}6zo1"  
private int[] queue; -Zs.4@GH  
Q+L;k R  
public int get() { "9W] TG  
return queue[1]; PvW {g5)S  
} f.Wip)g  
(bpO>4(S  
public void remove() { SM%N ]/@U  
SortUtil.swap(queue,1,size--); 7wKN  
fixDown(1); FKhmg&+>  
} LIzdP,^pc  
file://fixdown }G8gk"st  
private void fixDown(int k) { z4 GcS/3K  
int j; )UBU|uYR\  
while ((j = k << 1) <= size) { (9gL  
if (j < size %26amp;%26amp; queue[j] j++; P`ZzrN  
if (queue[k]>queue[j]) file://不用交换 }J=>nL'B  
break; c8uFLM j  
SortUtil.swap(queue,j,k); 7 YS'Tf  
k = j;  J+hiz3N  
} lG[@s 'j  
} =j,2  
private void fixUp(int k) { -G\svwv@)  
while (k > 1) { }_,\yC9F  
int j = k >> 1; T!-*;yu  
if (queue[j]>queue[k]) +qN}oyL  
break; S5o\joc  
SortUtil.swap(queue,j,k); 'OrGt_U  
k = j; Bi}uL)~rD  
} DxuT23. (  
} HW|5'opF  
z;T_%?u  
} c lhmpu  
JATW'HWC|I  
} Ep>} S  
\#)|6w-  
SortUtil: c? Z M<Y"  
A kMP)\Q  
package org.rut.util.algorithm; }57s  
aCxF{>n  
import org.rut.util.algorithm.support.BubbleSort; ,"6Bw|s  
import org.rut.util.algorithm.support.HeapSort; & OO0v*@{  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1 8*M  
import org.rut.util.algorithm.support.ImprovedQuickSort; *dmB Ji}  
import org.rut.util.algorithm.support.InsertSort; SX/ E@vYb  
import org.rut.util.algorithm.support.MergeSort; Sj=x.Tr\  
import org.rut.util.algorithm.support.QuickSort; g|STegg  
import org.rut.util.algorithm.support.SelectionSort; !TNp|U!  
import org.rut.util.algorithm.support.ShellSort; &TgS$c5k  
q4y P\B  
/** B/Jz$D  
* @author treeroot h7 r *5E  
* @since 2006-2-2 }4Q~<2  
* @version 1.0 0^lCZ,uq;  
*/ 38<Z=#S  
public class SortUtil { o]R*6$  
public final static int INSERT = 1; '{>R-}o[3  
public final static int BUBBLE = 2; 7~zd % o  
public final static int SELECTION = 3; |B{@noGX  
public final static int SHELL = 4; fBj-R~;0  
public final static int QUICK = 5; ww? AGd  
public final static int IMPROVED_QUICK = 6; j\hI, mc  
public final static int MERGE = 7; d76nyQKK  
public final static int IMPROVED_MERGE = 8; <cof   
public final static int HEAP = 9; $O'IbA  
;!~&-I0l  
public static void sort(int[] data) { 1hTE^\W  
sort(data, IMPROVED_QUICK); 1]&FB{l  
} +,g3Xqs}X  
private static String[] name={ Zk:Kux[7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OrC}WMhd  
}; 9Sey&x  
gZf8/Tp\z  
private static Sort[] impl=new Sort[]{ s(.H"_ a  
new InsertSort(), }xa~U,#5  
new BubbleSort(), L'?7~Cdls  
new SelectionSort(), n0a|GZyO]  
new ShellSort(), !"d"3coQ?  
new QuickSort(),  i)!2DXn  
new ImprovedQuickSort(), z=FOymv C  
new MergeSort(), mb\"qD5  
new ImprovedMergeSort(), n g,&;E  
new HeapSort() J@}PBHK+  
}; aP ToP.e  
c0ue[tb  
public static String toString(int algorithm){ ;% <[*T:*'  
return name[algorithm-1]; K[q{)>,9  
} JGHQzC  
dZWO6k9[H  
public static void sort(int[] data, int algorithm) { Q8H+=L:  
impl[algorithm-1].sort(data); /R(]hmW  
} ,J&\) yTP  
\{EYkk0]  
public static interface Sort { xqQLri}  
public void sort(int[] data); "Snt~:W>  
} GBY-WN4sc[  
g)mjw  
public static void swap(int[] data, int i, int j) { :<P3fW  
int temp = data; Nsf>b8O  
data = data[j]; ~K/_51O'  
data[j] = temp; e"(SlR  
} c5em*qCw$  
} |Vo{ {)  
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