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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。 %GRD3S  
插入排序: =@#[@Ia  
%O 5 k+~9  
package org.rut.util.algorithm.support; Ri$wt.b  
Qo*,2B9R L  
import org.rut.util.algorithm.SortUtil; BMw_F)hTO  
/** sE*A,z?  
* @author treeroot EN lqoj1  
* @since 2006-2-2 PJC[#>}  
* @version 1.0 !Vtt.j &4  
*/ "NUl7ce.R  
public class InsertSort implements SortUtil.Sort{ f/spJ<B).4  
.C avb  
/* (non-Javadoc) n^8LF9r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #;Yn8'a~  
*/ u{0'" jVJ  
public void sort(int[] data) { h kzy I~7  
int temp; [ vU$zZ<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I }AO_rtb  
} ;#np~gL  
} zd) 2@jX=  
} %w <59d6  
E?c)WA2iH  
} wGd4:W  
V K/;ohTTP  
冒泡排序: "Aw| 7XII  
\;0J6LBc  
package org.rut.util.algorithm.support; ?Ji.bnfK  
I(6k.PQ  
import org.rut.util.algorithm.SortUtil; !FhK<#  
Cm:&n|  
/** lO482l_t  
* @author treeroot ,vBi)H  
* @since 2006-2-2 SK2nxZOH  
* @version 1.0 TNs0^h)  
*/ [@Hv,  
public class BubbleSort implements SortUtil.Sort{ auOYi<<>W  
VKtrSY}6T  
/* (non-Javadoc) 8'=8!V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Q:5{?  
*/ NTRw:'  
public void sort(int[] data) { N2yxli  
int temp; =Qt08,.bW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b .9]b  
if(data[j] SortUtil.swap(data,j,j-1); JTcK\t8  
} yVe<[!hJ  
} ebk{p <  
} ny:c&XS  
} Lp\89tB>  
".&x`C  
} vkE[Ur>  
k0|*8  
选择排序: h:QKd!Gq  
*uYnu|UQH  
package org.rut.util.algorithm.support; q2VQS1R`8  
'jp nQcwxx  
import org.rut.util.algorithm.SortUtil; w$J0/eX{A  
8fpaY{]  
/** Xrnxpp!#^D  
* @author treeroot iE}jilU  
* @since 2006-2-2 S[fzy$">  
* @version 1.0 ]A}'jP  
*/ vt`hY4  
public class SelectionSort implements SortUtil.Sort { - #]?3*NO  
jEBZ"Jvb  
/* o[AQS`  
* (non-Javadoc) /p~Wk4'  
* 8" Z!: =A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) csTX',c  
*/ OZ?4"1$.t  
public void sort(int[] data) { |;q*Zy(  
int temp; 4]$cf:  
for (int i = 0; i < data.length; i++) { .+XGbs]kCi  
int lowIndex = i; }+U} [G  
for (int j = data.length - 1; j > i; j--) { 1-@.[VI  
if (data[j] < data[lowIndex]) { L2>UA<@mZ  
lowIndex = j; Q2;zve&Dl  
} n50XGv  
} v'`9^3(-  
SortUtil.swap(data,i,lowIndex); 5q[0;`J  
} q_Td!?2?  
} 2Up1 FFRx  
;$W/le"Xr  
} Y7R"~IA$  
L|G!of[8n  
Shell排序: [T', ZLR|  
ocwRU0+j  
package org.rut.util.algorithm.support; R4,j  
h'wOslyFa  
import org.rut.util.algorithm.SortUtil; >LxYP7M  
}S6Sz&)  
/** 2Mx9Kd'a r  
* @author treeroot Z(AI]wk3<  
* @since 2006-2-2 11}fPWK  
* @version 1.0 .?b2Bd!MC  
*/ .fxI)  
public class ShellSort implements SortUtil.Sort{ ~o`I[-g)  
-ecP@,  
/* (non-Javadoc) 6L~@jg~0A[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _+ K[1P  
*/ *a Y`[,4#$  
public void sort(int[] data) { *&)<'6  
for(int i=data.length/2;i>2;i/=2){ #3maT*JY  
for(int j=0;j insertSort(data,j,i); 'UO,DFq[Fl  
} y wlN4=  
} iK%<0m  
insertSort(data,0,1); tx;DMxN!W  
} Q[i/]  
Mn+;3qo{6  
/** BDY@&vF  
* @param data }x4,a6^  
* @param j bL 5z%bV  
* @param i Sv.z9@S  
*/ T{u!4Yu  
private void insertSort(int[] data, int start, int inc) { }*l V  
int temp; ~I6Er6$C^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >jAr9Blz]  
} GqhnE>  
} Nd/iMV6V;  
} p2|c8n==  
B?c9cS5Mj  
} ITh1|yP  
W5?F?Dp!v  
快速排序: z<rdxn,9  
w[PWJ! <  
package org.rut.util.algorithm.support; HbF.doXK  
jzc/Olb  
import org.rut.util.algorithm.SortUtil; H n+1I  
ByeyUw  
/** PPT"?lt*&  
* @author treeroot )NZ6!3[@  
* @since 2006-2-2 I ,Q"<? &  
* @version 1.0 >L/Rf8j&  
*/ !o &+  
public class QuickSort implements SortUtil.Sort{ k%#`{#n i  
O!='U!X@P  
/* (non-Javadoc) xbrxh-gV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BR\% aU$u  
*/ +NPk9jn  
public void sort(int[] data) { dC@aQi6{6  
quickSort(data,0,data.length-1); (+>~6SE  
} OxX{[|!`  
private void quickSort(int[] data,int i,int j){ rKq/=Avv  
int pivotIndex=(i+j)/2; ?_[xpK()  
file://swap UiS9uGj  
SortUtil.swap(data,pivotIndex,j); 8WV1OIL  
-yeQQ4b  
int k=partition(data,i-1,j,data[j]); `(1em%}  
SortUtil.swap(data,k,j); !cw<C*  
if((k-i)>1) quickSort(data,i,k-1); 0Mt2Rg}  
if((j-k)>1) quickSort(data,k+1,j); B{!)GZ(}  
NAhV8  
} ed*Cx~rT  
/** joDnjz=  
* @param data 6cSMKbgZJ  
* @param i @lAOi1m,,  
* @param j b].:2  
* @return H[V^wyi'z  
*/ hN c;, 13  
private int partition(int[] data, int l, int r,int pivot) { i0,{*LD%^  
do{ noe1*2*TE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0"o<( 1  
SortUtil.swap(data,l,r); H ~1laV  
} >b,o yM  
while(l SortUtil.swap(data,l,r); dN;kYWRK  
return l; NUb^!E"  
} tx&>Eo  
B{a:cz>0<  
} {f#{NA5  
&KgR;.R^J  
改进后的快速排序: +] B  
*wP8)yv7  
package org.rut.util.algorithm.support; KgVit+4u/  
" e g`3v  
import org.rut.util.algorithm.SortUtil; %@$h?HP  
`3kE$h#  
/** Y\BB;"x1  
* @author treeroot Ri4_zb  
* @since 2006-2-2 UT [7 J  
* @version 1.0 m\7-/e2 a  
*/ rB?u.jn0T  
public class ImprovedQuickSort implements SortUtil.Sort { E!Hq%L!/  
rMSB|*_  
private static int MAX_STACK_SIZE=4096; xPb;_~  
private static int THRESHOLD=10; Km]N scq1  
/* (non-Javadoc) F}0QocD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gB&]kHLO  
*/ 2*n2!7jZ*  
public void sort(int[] data) { k@5#^G  
int[] stack=new int[MAX_STACK_SIZE]; u1` 8f]qt  
J"|)?$d]z  
int top=-1; <qZXpQ#  
int pivot; K7<'4i~k  
int pivotIndex,l,r; jd l1Q<Z  
=nFT0];  
stack[++top]=0; YS?P A#  
stack[++top]=data.length-1; NmST1pMk  
= Ii@-C  
while(top>0){ 9~zh]deH  
int j=stack[top--]; Zqd&EOm  
int i=stack[top--]; ,Ng3!2&$e  
=b32E^z,  
pivotIndex=(i+j)/2; y4VCehdJ  
pivot=data[pivotIndex]; <?52Svi}}  
-QIcBzw;q  
SortUtil.swap(data,pivotIndex,j); cZ|D!1%  
JwB:NqB  
file://partition yNc>s/  
l=i-1; Yc=y  Vh  
r=j;  -6~*:zg,  
do{ S n.I ]:l  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); seHwn'Jn  
SortUtil.swap(data,l,r); E{T\51V]%  
} GWjKZ1p  
while(l SortUtil.swap(data,l,r); Jkpw8E7  
SortUtil.swap(data,l,j); XZcsx  
u A C:&  
if((l-i)>THRESHOLD){ |C'w] QYm  
stack[++top]=i; /2>-h-zBjw  
stack[++top]=l-1; 7zr\AgV9  
} ~0ZEnejy  
if((j-l)>THRESHOLD){ >1pD'UZIy7  
stack[++top]=l+1; ?*}76u  
stack[++top]=j; h|=^@F_\`  
} HCHP15otfe  
E}k#-+u<S4  
} <tf4j3lwH  
file://new InsertSort().sort(data); {9;~xxTo  
insertSort(data); R|V<2  
} G&D N'bp  
/** E=~H,~  
* @param data dtA- 4Ndm  
*/ ^Q!:0D*  
private void insertSort(int[] data) { dwrc"GK!o  
int temp; .~v~~VL1NS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;zs*Zd7h M  
} >]:R{1h  
} qqw6p j  
} /T#<g:   
x)"=*Jj  
} 6i.'S5.  
6 $ IXER  
归并排序: t vk^L3=<  
[7<X&Q  
package org.rut.util.algorithm.support; zmr=iK  
wrqdQ} @(  
import org.rut.util.algorithm.SortUtil; &@dMk4BH<  
~pzaX8!  
/** W:(:hT6`j9  
* @author treeroot U%oI*  
* @since 2006-2-2 y{u6t 3  
* @version 1.0 yl 0?Y  
*/ |\QR9>  
public class MergeSort implements SortUtil.Sort{ O b8[P=  
3;>(W  
/* (non-Javadoc) wB9IP{Pf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L%B+V;<h3  
*/ =v:_N.Fh-c  
public void sort(int[] data) { r0\bi6;s/  
int[] temp=new int[data.length]; *N>Qj-KAM_  
mergeSort(data,temp,0,data.length-1); =7e8N&-nv  
} .Z_U]_(  
GbP!l;a  
private void mergeSort(int[] data,int[] temp,int l,int r){ /2FX"I[0V%  
int mid=(l+r)/2; ` t6lnO  
if(l==r) return ; Efp=z=E  
mergeSort(data,temp,l,mid); 1/cb;:h>  
mergeSort(data,temp,mid+1,r); Q~xR'G[N  
for(int i=l;i<=r;i++){ 1'aS2vB9  
temp=data; xR_]^Get  
} >E]*5jqU  
int i1=l; g!~j Wn?A  
int i2=mid+1; gKYn*  
for(int cur=l;cur<=r;cur++){ o8s&n3mY}y  
if(i1==mid+1) ` 4k;`a  
data[cur]=temp[i2++]; A:D\!5=  
else if(i2>r) V?_%Y<|L  
data[cur]=temp[i1++]; LL[ +QcH  
else if(temp[i1] data[cur]=temp[i1++]; G!rcY5!J  
else 3\4Cg()  
data[cur]=temp[i2++]; c'G\AbUVjE  
} +vU.#C_2  
} -g@pJ^>:  
hA@X;Mh^w  
} W/\7m\ B  
66|lQE&n  
改进后的归并排序: dHp6G^Y  
L1F){8[  
package org.rut.util.algorithm.support; Xrz0ch  
R=e`QMq  
import org.rut.util.algorithm.SortUtil; Q'8v!/"}p{  
l w%fY{  
/** kkJg/:g  
* @author treeroot y.O? c &!  
* @since 2006-2-2 r p @=  
* @version 1.0 IcQ?^9%{  
*/ Z(<ul<?r  
public class ImprovedMergeSort implements SortUtil.Sort { piId5Gx7  
D>|:f-Z6Z  
private static final int THRESHOLD = 10; AGv;8'`  
.s!:p pwl  
/* PN'8"8`{  
* (non-Javadoc) NGze: gPmO  
* <!+o8z]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,88Y1|:X  
*/ 4;*V^\',9  
public void sort(int[] data) { mD=?C  
int[] temp=new int[data.length]; `3+U6>U [  
mergeSort(data,temp,0,data.length-1); ^M80 F7  
} kqyMrZ#  
:?p{ga9  
private void mergeSort(int[] data, int[] temp, int l, int r) { ScTqnY$v  
int i, j, k; 'sA&Pm  
int mid = (l + r) / 2; djSN{>S  
if (l == r) /tUl(Fp J`  
return; 4/h2_  
if ((mid - l) >= THRESHOLD) Gt1Up~\s  
mergeSort(data, temp, l, mid); t]` 2f3UO  
else q@\_q!  
insertSort(data, l, mid - l + 1); sbs"26IE  
if ((r - mid) > THRESHOLD) xv*mK1e  
mergeSort(data, temp, mid + 1, r); #>,cc?H-  
else 1z`,*eD7  
insertSort(data, mid + 1, r - mid); }UO,R~q~  
D~y]d  
for (i = l; i <= mid; i++) { <N*>9S,}  
temp = data; asF- mf;D  
} <G&v  
for (j = 1; j <= r - mid; j++) { _ 4W#6!  
temp[r - j + 1] = data[j + mid]; srSTQ\l4  
} x:bYd\ EJ[  
int a = temp[l]; <VBw1|)$@  
int b = temp[r]; :1{j&$  
for (i = l, j = r, k = l; k <= r; k++) { "/ "qg  
if (a < b) { ;CvGIp&y  
data[k] = temp[i++]; ~H$XSNPi  
a = temp; p']AXJ`Z  
} else { =aekY;/  
data[k] = temp[j--]; [_0g^(`  
b = temp[j]; j~{2fd<>  
} i f"v4PHq  
} a2 SQ:d  
} Stc\P]%d  
- VE#:&  
/** MCCZh{uo  
* @param data ku{aOV%  
* @param l <-?B#  
* @param i *Q>:|F[vM  
*/ "5YdmBy  
private void insertSort(int[] data, int start, int len) { LBE".+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 35>}$1?-6  
} |. 6@-h~8  
} f@{C3E dd  
} IF:M_   
} saT9%?4-  
%C)JmaQ{9  
堆排序: yRznP)  
>ob/@  
package org.rut.util.algorithm.support; w|HZI,~  
Wk|z\OR(  
import org.rut.util.algorithm.SortUtil; w=`z!x![/  
O)Qz$  
/** @( t:E`8  
* @author treeroot z(WpOD   
* @since 2006-2-2 e ?YbG.(E9  
* @version 1.0 "uCQm '  
*/ lkm(3y@']A  
public class HeapSort implements SortUtil.Sort{ A!D:Kc3  
.}E)7"Qi,  
/* (non-Javadoc) lP e$AI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z C93C7lJ  
*/ cOb%SC[A{  
public void sort(int[] data) { mQs$7t[>t  
MaxHeap h=new MaxHeap(); [z~Nw#  
h.init(data); K[[k,W]qb  
for(int i=0;i h.remove(); !7oy%{L  
System.arraycopy(h.queue,1,data,0,data.length); {X$Mwqhpp;  
}  SoX V  
mig3.is  
private static class MaxHeap{ X W)A~wPBs  
Ic}ofBK  
void init(int[] data){  ~Hs{(7   
this.queue=new int[data.length+1]; dO[4}FZ$  
for(int i=0;i queue[++size]=data; gp)ds^  
fixUp(size); `VsGa  
} S:YL<_oI|  
} H1nQ.P]_  
m'tk#C  
private int size=0; 0I((UA/7Zs  
kKM%    
private int[] queue; b..$5  
Z-|C{1}A  
public int get() { \DqxS=o;  
return queue[1]; vI'>$  
} ~-`02  
CK(ev*@\D,  
public void remove() { ? 6d4T  
SortUtil.swap(queue,1,size--); V+24-QWh  
fixDown(1); QNXxpoS#  
} }NCvaO  
file://fixdown W~3tQ!  
private void fixDown(int k) { K]8wW;N4  
int j; l*Ei7 |Z  
while ((j = k << 1) <= size) { <&:&qn gg  
if (j < size %26amp;%26amp; queue[j] j++; 8>q% 1]X  
if (queue[k]>queue[j]) file://不用交换 P@YL.'KU)  
break; + nS/jW  
SortUtil.swap(queue,j,k); fZ}Y(TG/  
k = j; %>2t=)T  
} ?MM3LA! <  
} df *#?Ok  
private void fixUp(int k) { .4> s2  
while (k > 1) { &.hRVW(  
int j = k >> 1; |"qB2.[  
if (queue[j]>queue[k]) ~C'nBV  
break; AJfi,rFPg  
SortUtil.swap(queue,j,k); `uVW<z{ l  
k = j; ;6nZ  
} b:Kw_Q  
} b U]N^og^  
X3{1DY3@u  
} i8_x1=A  
U!:!]DX(  
} _M[[vXH  
WgJAr73 l  
SortUtil: q_y,j&  
DXW?;|8)O  
package org.rut.util.algorithm; 8$ZSF92C  
G*i#\   
import org.rut.util.algorithm.support.BubbleSort; 5jV97x)BGx  
import org.rut.util.algorithm.support.HeapSort; :IVMTdYf  
import org.rut.util.algorithm.support.ImprovedMergeSort; }.UI&UZ-  
import org.rut.util.algorithm.support.ImprovedQuickSort; h#>L:Wf5E  
import org.rut.util.algorithm.support.InsertSort; i i@1!o  
import org.rut.util.algorithm.support.MergeSort; ll\^9 4]Q  
import org.rut.util.algorithm.support.QuickSort; gH^$Y~Lx  
import org.rut.util.algorithm.support.SelectionSort; xeM':hD.o  
import org.rut.util.algorithm.support.ShellSort; IXvz&4VD  
|4. o$*0Y  
/** gkML .u  
* @author treeroot ](>7h _2B  
* @since 2006-2-2 Xm:=jQn  
* @version 1.0 5A$az03y$\  
*/ $;uWj|  
public class SortUtil { ;[%}Xx  
public final static int INSERT = 1; }u_EXP8M  
public final static int BUBBLE = 2; Pgw%SMEp  
public final static int SELECTION = 3; RyOT[J  
public final static int SHELL = 4; b2X'AHK S  
public final static int QUICK = 5; P!+nZXo  
public final static int IMPROVED_QUICK = 6; A?D"j7JD=L  
public final static int MERGE = 7; 0tCOb9  
public final static int IMPROVED_MERGE = 8; .(7C)P{ .0  
public final static int HEAP = 9; x56 F  
%C`'>,t>  
public static void sort(int[] data) { O {6gNR,*  
sort(data, IMPROVED_QUICK); Eqmv`Z [_  
} 'SU9NQS  
private static String[] name={ 6!%d-Z7)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `x$}~rP&)!  
}; 'CX.qxF1;p  
 n22hVw  
private static Sort[] impl=new Sort[]{ xcZ%,7  
new InsertSort(), M&djw`B  
new BubbleSort(), NnLhJPh  
new SelectionSort(), .aismc`=  
new ShellSort(), y|;8:b32  
new QuickSort(), ?FV7|)f  
new ImprovedQuickSort(), dD^_^'i  
new MergeSort(), j&[.2PW\  
new ImprovedMergeSort(), u1) TG "+0  
new HeapSort() cxD}t'T  
}; Stw+Dm\!  
ok3  
public static String toString(int algorithm){ a|P~LMPM  
return name[algorithm-1]; B2G5h baA  
} Z0"&  
Naf`hE9  
public static void sort(int[] data, int algorithm) { "T{~,'T  
impl[algorithm-1].sort(data); d@6:|auO  
} 9IvcKzS2  
RZd4(7H=q  
public static interface Sort { 7"n1it[RJ8  
public void sort(int[] data); Lk`k>Nn)  
} NT;x1  
O~#uQm  
public static void swap(int[] data, int i, int j) { >2lAy:B5  
int temp = data; F8S~wW=\w  
data = data[j]; ,dZ#,<  
data[j] = temp; ^%oG8z,L  
} LZQFj/,Jg  
} +f\pk \Ith  
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