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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。 XwNJHOaF  
插入排序: j68_3zpl  
7\xGMCctM  
package org.rut.util.algorithm.support; cEc_S42Z  
LqA&@  
import org.rut.util.algorithm.SortUtil; \)' o{l&  
/** !CO1I-yL  
* @author treeroot HX&G  k  
* @since 2006-2-2 ~R!M.gY[rK  
* @version 1.0 /-v6jiM  
*/ |{en) {:  
public class InsertSort implements SortUtil.Sort{ .\6q\7Ej  
4`M7 3k0  
/* (non-Javadoc) #lld*I"d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b)1v:X4Bv=  
*/ F\G-. 1  
public void sort(int[] data) { HZDeQx`*s  
int temp; +t hkx$o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CfMCc:8mL  
} rQ*Fc~^L  
} 2/ES.>K!.  
}  <RaM@E  
ZJ Ke}F`l  
} N ">4I)  
eGF+@)K1"  
冒泡排序: >&g^ `  
0!fT:Ra  
package org.rut.util.algorithm.support; _9<nM48+t  
2b i:Q9  
import org.rut.util.algorithm.SortUtil; l}jC$B`5  
yJRqX]MLA  
/** 6#SUfK;  
* @author treeroot lH#C:n  
* @since 2006-2-2 ah9P C7[  
* @version 1.0 }#Gq*^w  
*/ EpsjaOmAF  
public class BubbleSort implements SortUtil.Sort{ ,^K}_z\9f  
)A1u uW (  
/* (non-Javadoc) suF<VJ)&s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wp2$L-T&$  
*/ _< LJQ  
public void sort(int[] data) { tP0\;W  
int temp; E'ay @YAp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;if PqL kO  
if(data[j] SortUtil.swap(data,j,j-1); N R0"yJV>  
} nd4Z5=X  
} fb*h.6^y9  
} *+|,rcI  
} :H(wW   
jo}yeGbU  
} FJCLK#-  
\)'5V!B|s  
选择排序: [0M`uf/u  
oH ] _2[ !  
package org.rut.util.algorithm.support; L#6!W  
^1mnw@04  
import org.rut.util.algorithm.SortUtil; N}\%r&KR=  
o0}kRL  
/** 6a!b20IZh  
* @author treeroot @yj$  
* @since 2006-2-2 KKcajN  
* @version 1.0 \M U-D,@  
*/ WM8])}<L  
public class SelectionSort implements SortUtil.Sort { dMlJ2\ ]u  
&)ED||r,  
/* E gD$A!6N8  
* (non-Javadoc) .:I^O[k  
* :6[G;F7s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9pMXjsE   
*/ pAtt=R,Ht  
public void sort(int[] data) { ]*]#I?&'Hx  
int temp; =!N,{V_  
for (int i = 0; i < data.length; i++) { "969F(S$  
int lowIndex = i; Z(Z$>P&4  
for (int j = data.length - 1; j > i; j--) { >.1d1#+b  
if (data[j] < data[lowIndex]) { mTU[khEmL=  
lowIndex = j; Tf{lH9ca$  
} Is[n7Q  
} ?[#4WH-G  
SortUtil.swap(data,i,lowIndex); &WJ;s*  
} "~:P-]`G  
} uGU-MC *  
> Hwf/Gf[  
} Z/e^G f#i  
nJ2910"<  
Shell排序: cES8%UC^i  
-2qI2Z  
package org.rut.util.algorithm.support; B".3NQ  
9 K~X+N\  
import org.rut.util.algorithm.SortUtil; E0*62OI~O  
cof+iI~9O%  
/** ^OrO&w|  
* @author treeroot q${+I(b,  
* @since 2006-2-2 n3_| # 1Qu  
* @version 1.0 %{B4M#~  
*/ ql I1<Jx  
public class ShellSort implements SortUtil.Sort{ pqDlg  
rKkFflOVO  
/* (non-Javadoc) :/\KVz'fw}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XYze*8xUb  
*/ j*_>/gi  
public void sort(int[] data) { q"-+`;^7(-  
for(int i=data.length/2;i>2;i/=2){ U]PsL3:  
for(int j=0;j insertSort(data,j,i); kIJ=]wU|v  
} _T(77KLn;  
} -?L3"rxAP  
insertSort(data,0,1); #:E^($v  
} x }.&?m  
=6d'/D#J  
/** Zfc{}ius  
* @param data Q;k D Jo  
* @param j @g] >D  
* @param i S76x EL  
*/ l<UA0*t  
private void insertSort(int[] data, int start, int inc) { 4bq+(CI6  
int temp; \F9HsR6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [H=l# W@  
} <Q@{6  
} ?8ady% .ls  
} H8A=]Gq  
h3(B7n7  
} YDaGr6y4i  
$]~|W3\G  
快速排序: FPkig`(3  
,GMuq_H  
package org.rut.util.algorithm.support; 49Hgq/uO  
~)#xOE}  
import org.rut.util.algorithm.SortUtil; SN5Z@kK  
*qKf!&  
/** RPZ -  
* @author treeroot q@d6P~[-gj  
* @since 2006-2-2 GiKmB-HO  
* @version 1.0 F-<c.0;6  
*/ vpP8'f.  
public class QuickSort implements SortUtil.Sort{ :auq#$B  
ZW ZKyJQ  
/* (non-Javadoc) ^)1!TewCY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h{CMPJjD  
*/ ?jn";:  
public void sort(int[] data) { N6h.zl&04  
quickSort(data,0,data.length-1); F>ps& h  
} i|N(= Z=  
private void quickSort(int[] data,int i,int j){ e^h4cC\^  
int pivotIndex=(i+j)/2; '<aFd)-  
file://swap lTZcbaO?]  
SortUtil.swap(data,pivotIndex,j); bj=YFV+  
%iD'2e:  
int k=partition(data,i-1,j,data[j]); J\Z\q  
SortUtil.swap(data,k,j); Dw&_6\F@  
if((k-i)>1) quickSort(data,i,k-1); 3gz4c1 s^:  
if((j-k)>1) quickSort(data,k+1,j); ,%]x T>kH  
fH 0&Wc3yC  
} WZf}1.Mh*  
/** |$`I1  
* @param data | (: PX  
* @param i XB+Juk&d  
* @param j V]|P>>`v9p  
* @return y2@8?  
*/ Ombvp;  
private int partition(int[] data, int l, int r,int pivot) { {3G2-$yb  
do{ }O8#4-E_Ji  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o%l|16DR  
SortUtil.swap(data,l,r); ^w~Utx4  
} ;mXw4_{  
while(l SortUtil.swap(data,l,r); |\/V1  
return l; !z_VwZ#,  
} 5uD'Kd$H  
J-Wphc!m  
} 3t$)saQR  
IfpFsq:  
改进后的快速排序: ("_tML 8/p  
0BQ<a  
package org.rut.util.algorithm.support; }zqYn`ffD  
~ MW_=6U  
import org.rut.util.algorithm.SortUtil; "%)^:('Ki  
u|8yV.=R  
/** (Q6}N'T  
* @author treeroot LE@`TPg$R  
* @since 2006-2-2 <'<{|$Pw  
* @version 1.0 y0cB@pWp  
*/ -\~D6OA  
public class ImprovedQuickSort implements SortUtil.Sort { ]y<<zQ_fhY  
zP#%ya :I  
private static int MAX_STACK_SIZE=4096; 1}jwv_0lL  
private static int THRESHOLD=10; \bumB<w(]  
/* (non-Javadoc) Q~G>=J9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @(s"5i.`)  
*/ nnBl:p>< k  
public void sort(int[] data) { 7VKTI:5y  
int[] stack=new int[MAX_STACK_SIZE]; Oz7WtN  
C]DvoJmBs  
int top=-1; @G0j/@v  
int pivot; e"6!0Py#*  
int pivotIndex,l,r; \&5t@sC  
s(M8 Y  
stack[++top]=0; x)!NB99(tC  
stack[++top]=data.length-1; I:,D:00+  
Wo~#R   
while(top>0){ y1+~IjY  
int j=stack[top--]; ee{8C~  
int i=stack[top--]; MYF6tZ*  
nh+f,HtSt  
pivotIndex=(i+j)/2; |\S p IFH1  
pivot=data[pivotIndex]; f iu?mb=*  
Vq1v e;(8s  
SortUtil.swap(data,pivotIndex,j); kc-v(WIC  
1U;p+k5c  
file://partition pm}!?TL  
l=i-1; ,MdK "Qa>  
r=j; ET}Dh3A  
do{ Irnfr\l.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i-_ * 5%A  
SortUtil.swap(data,l,r); ,1&</R_  
} d}RR!i`<N  
while(l SortUtil.swap(data,l,r); 4]3(Vyh`  
SortUtil.swap(data,l,j); 0s8w)%4$  
J,j!  
if((l-i)>THRESHOLD){ l-RwCw4f  
stack[++top]=i; "1Oe bo2  
stack[++top]=l-1; #jNN?,ZK  
} 3erGTa[|q  
if((j-l)>THRESHOLD){ &ZUV=q%g9n  
stack[++top]=l+1; & !I$  
stack[++top]=j; o$-!E(p  
} XB'PEvh8  
sZ9VXnz24  
} )I`Ma6bX  
file://new InsertSort().sort(data); 01" b9`jU  
insertSort(data); x-HN]quhe  
} x)Ls(Xh+g  
/** "iY=1F"\R  
* @param data .#ASo!O5q  
*/ @>sZ'M2mq  
private void insertSort(int[] data) { 1O,<JrE+-  
int temp; V,qc[*_3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CDTM<0`%  
} ]~1Xx:X-  
} jjrhl  
} amH..D7_>  
%\2w 1  
} 26Jb{o9Z<  
.y~vn[qN  
归并排序: Z&E!m   
.#[==  
package org.rut.util.algorithm.support; bI"_hvcFp  
\tx4bV#  
import org.rut.util.algorithm.SortUtil; v8!Ts"  
QBI;aG<+b>  
/** :AM5EO  
* @author treeroot BHa'`lCb  
* @since 2006-2-2 V O= o)H\  
* @version 1.0  rr=e  
*/ pZg}7F{$  
public class MergeSort implements SortUtil.Sort{ nD51,1>  
UfWn\*J&k  
/* (non-Javadoc) 08TeGUjJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yMoV|U6  
*/ l mRd l>  
public void sort(int[] data) { wjeuZNYf  
int[] temp=new int[data.length]; OW|5IEC  
mergeSort(data,temp,0,data.length-1); Lradyo44u\  
} <yHa[c`L  
2)zAX"#/  
private void mergeSort(int[] data,int[] temp,int l,int r){ C>:'@o Z  
int mid=(l+r)/2; FELDz7DYya  
if(l==r) return ; 3</gK$f2  
mergeSort(data,temp,l,mid); ~l@ h  
mergeSort(data,temp,mid+1,r); gL:Vj%c  
for(int i=l;i<=r;i++){ Z>si%Npm\  
temp=data; ^Voi 4;  
} ~d072qUos  
int i1=l; BrO" _  
int i2=mid+1; Dxlpo! ?#  
for(int cur=l;cur<=r;cur++){ gx',~  
if(i1==mid+1) j aEUz5  
data[cur]=temp[i2++]; @jxAU7!  
else if(i2>r) ZcLW8L  
data[cur]=temp[i1++]; WQ1~9#  
else if(temp[i1] data[cur]=temp[i1++]; rV0X*[]J>  
else t/57LjV  
data[cur]=temp[i2++]; }pMd/|A,  
} [, )G\  
} V|n}v?f_q  
|r%NMw #y  
} t0*,%ge:<  
=h Lw 1~  
改进后的归并排序: +-*Ww5Zti  
r$ 8 ^K\oF  
package org.rut.util.algorithm.support; >{HQ"{Q  
8*iIJ  
import org.rut.util.algorithm.SortUtil; UTLuzm  
&xYO6_.  
/** #NZ#G~oeO  
* @author treeroot QU;bDNq,c  
* @since 2006-2-2 qG<3H!Z!ky  
* @version 1.0 c&GVIrJ  
*/ [<,i}z  
public class ImprovedMergeSort implements SortUtil.Sort { +M=`3jioL  
qLYz-P'ik  
private static final int THRESHOLD = 10; +\_c*'K>  
7H l>UX,|  
/* ls*bCe  
* (non-Javadoc) !JGe .U5  
* l3O!{&~K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kR,ry:J-  
*/ };Oyv7D+b  
public void sort(int[] data) { F!_8?=|  
int[] temp=new int[data.length]; =} D9sT  
mergeSort(data,temp,0,data.length-1); w5+H9R6  
} 3HEm-pok  
?bH&F  
private void mergeSort(int[] data, int[] temp, int l, int r) { |Fi{]9(G2  
int i, j, k; K!,T.qA&=  
int mid = (l + r) / 2; 8=  kwc   
if (l == r) $Vp*,oRL  
return; j"F?^0aR,Q  
if ((mid - l) >= THRESHOLD) H-&T)  
mergeSort(data, temp, l, mid); }NJKkj?  
else mfqnRPZ  
insertSort(data, l, mid - l + 1); !*1 $j7`tP  
if ((r - mid) > THRESHOLD) \}Al85  
mergeSort(data, temp, mid + 1, r); e~U]yg5X-  
else 2rV]n  
insertSort(data, mid + 1, r - mid); TT@ U_^o  
]?6Pt:N2  
for (i = l; i <= mid; i++) { [eO^C  
temp = data; FMi:2.E  
} lsaA    
for (j = 1; j <= r - mid; j++) { 4`GOBX1b.y  
temp[r - j + 1] = data[j + mid]; S"4eS,5L|  
} 2{Y~jYt{h  
int a = temp[l]; x:K~?c3  
int b = temp[r]; ZfMs6`Wv 1  
for (i = l, j = r, k = l; k <= r; k++) { b} 0G~oLP  
if (a < b) { Uv m:`e~?  
data[k] = temp[i++]; L</k+a?H!  
a = temp; $<QrV,T  
} else { Rb!y(&>v  
data[k] = temp[j--]; 9 {wRqY  
b = temp[j]; Obf RwZh?q  
} z"97AXu  
} ;_=N YG.  
} uOO\!Hqq  
a$j ~YUG_  
/** r~z'QG6v/  
* @param data %s! |,Cu  
* @param l 4{@{VsXN  
* @param i r7,}"Pl  
*/ ]rG/?1'^i  
private void insertSort(int[] data, int start, int len) { .P <3+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4*ZY#7h  
} Z]e`bfNnI  
} <2E|URo,#  
} lA pZC6Iwk  
} o! l Ykud  
=EYWiK77a  
堆排序: 5X f]j=_  
$nb.[si\  
package org.rut.util.algorithm.support; _u+ 7>  
<iA\ZS:  
import org.rut.util.algorithm.SortUtil; r'`7}@H*  
q3<kr<SP  
/** ua)jGif  
* @author treeroot F"bz<{  
* @since 2006-2-2 u0GHcpOm  
* @version 1.0 au04F]-|j8  
*/ -V4%f{9T3  
public class HeapSort implements SortUtil.Sort{ -@e2/6Oi  
64mg:ed&  
/* (non-Javadoc) ruQt0q,W3%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RC/45:hZZ  
*/ {#:31)P  
public void sort(int[] data) { nTv}/M&  
MaxHeap h=new MaxHeap(); X@"G1j >/  
h.init(data); 7o0zny3?  
for(int i=0;i h.remove(); \ )=WA!  
System.arraycopy(h.queue,1,data,0,data.length); )S 7+y6f&*  
} 4EHrd;|   
|mP};&b  
private static class MaxHeap{ 3 3|t5Ia  
BZ =I/L  
void init(int[] data){ 1$8@CT^m  
this.queue=new int[data.length+1]; e{7\pQK  
for(int i=0;i queue[++size]=data; <)p.GAZ  
fixUp(size); r=&,2meo  
} 59O-"Sc[  
} G[\TbPh  
]q.%_  
private int size=0; X%+lgm+  
0_eqO'"  
private int[] queue; {G Jl<G1  
8f/KNh7#s  
public int get() { QYMfxpiC  
return queue[1]; 4/Y?eUQ  
} ZRG Cy5Rk  
+U2lwd!j  
public void remove() { F)(^c  
SortUtil.swap(queue,1,size--); {YgU23;q  
fixDown(1); {2h *NFp  
} 8u2k-_9  
file://fixdown b)<WC$"  
private void fixDown(int k) { .`}TND~  
int j; tL$,]I$1+  
while ((j = k << 1) <= size) { bGCC?}\  
if (j < size %26amp;%26amp; queue[j] j++; J5G<Y*q  
if (queue[k]>queue[j]) file://不用交换 A$=ny6  
break; pM?~AYWb  
SortUtil.swap(queue,j,k); }6@E3z]AMO  
k = j; byxlC?q7  
} } Bf@69  
} 1ysfpX{=  
private void fixUp(int k) { r8s>s6vm  
while (k > 1) { uQIPnd(V  
int j = k >> 1; u%~'+=  
if (queue[j]>queue[k]) CefFUqo4  
break; `(FjOd K  
SortUtil.swap(queue,j,k); (oG YnN,2  
k = j; 2y - QH  
} c!ZZMC s  
} '4 *0Pw  
^OKm (  
} x95s%29RS  
KL'1)G"OH  
} uge r:cD  
qWhW4$7x  
SortUtil: VcrMlcnO  
ZaYiby@Ci  
package org.rut.util.algorithm; YB"gLv?  
9^XZ|`  
import org.rut.util.algorithm.support.BubbleSort; .dU91> ~Ov  
import org.rut.util.algorithm.support.HeapSort; |M;Nq@bRv  
import org.rut.util.algorithm.support.ImprovedMergeSort; kG /1  
import org.rut.util.algorithm.support.ImprovedQuickSort; \}$|Uo$O  
import org.rut.util.algorithm.support.InsertSort; .o/|]d`%  
import org.rut.util.algorithm.support.MergeSort; I{89chi  
import org.rut.util.algorithm.support.QuickSort; K=N&kda   
import org.rut.util.algorithm.support.SelectionSort; g>VtPS5 y  
import org.rut.util.algorithm.support.ShellSort; V *@q< rQ  
:^]Po$fl  
/** G<?RH"RZr  
* @author treeroot cg8/v:B  
* @since 2006-2-2 k*C69  
* @version 1.0 N|yA]dg[  
*/ lwQ!sH[M  
public class SortUtil { !igPyhi,hl  
public final static int INSERT = 1; d~aTjf  
public final static int BUBBLE = 2; FEk9a^Xyx  
public final static int SELECTION = 3; hoFgs9  
public final static int SHELL = 4; `,V&@}&"n  
public final static int QUICK = 5; 2H`r:x<Z-  
public final static int IMPROVED_QUICK = 6; b$'%)\('g  
public final static int MERGE = 7; 7KlL%\  
public final static int IMPROVED_MERGE = 8; ?ES{t4"  
public final static int HEAP = 9; C1;uAw?\  
}ekNZNcuM  
public static void sort(int[] data) { (d &" @  
sort(data, IMPROVED_QUICK); &`m.]RV  
} spA|[\Nl  
private static String[] name={ :$G^TD/n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <sC(a7i1  
}; aG7Lm2{c"  
12 )  
private static Sort[] impl=new Sort[]{ 'gN[LERT  
new InsertSort(), #X)DFAtb  
new BubbleSort(), [\ku,yd%0  
new SelectionSort(), ()|e xWW  
new ShellSort(), YMw,C:a4  
new QuickSort(), !\'w>y7  
new ImprovedQuickSort(), O.dZ3!!+  
new MergeSort(), q,sO<1wAT\  
new ImprovedMergeSort(), SVa^:\"$[  
new HeapSort() mCnl@  
}; PlCw,=K8f  
|Gq3pL<jkC  
public static String toString(int algorithm){ "I=Lbh-`  
return name[algorithm-1]; b|87=1^m[  
} m<n+1  
}D1? Z7p  
public static void sort(int[] data, int algorithm) { s {*rBX8N  
impl[algorithm-1].sort(data); JXuks`:Q  
} =>S[Dh  
M7qg\1L  
public static interface Sort { qi@Nz=t#HJ  
public void sort(int[] data); :2 \NG}  
} vo#$xwm1  
&x (D%+  
public static void swap(int[] data, int i, int j) { g1XpERsSEV  
int temp = data; [ !~8TF  
data = data[j]; Cno[:iom  
data[j] = temp; h9d*N9!;M  
} UaG&HGg]!  
} MNh:NFCRA  
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10+5=?,请输入中文答案:十五