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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。 kVB}r.NHP  
插入排序: ^>P@5gcoE(  
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package org.rut.util.algorithm.support; 2vk8+LA(6  
 d'**wh,  
import org.rut.util.algorithm.SortUtil; h0y\,iWXb  
/** S`'uUvAA  
* @author treeroot Ggxrj'r  
* @since 2006-2-2 BIb{<tG^N  
* @version 1.0 37ri b  
*/ 8V53+]c$Y  
public class InsertSort implements SortUtil.Sort{ skmDsZzw  
~' PS|  
/* (non-Javadoc) K>DnD0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z=8_%r  
*/ X*p:&=o  
public void sort(int[] data) { #nMP (ShK  
int temp; hg86#jq%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |Ls&~'ik  
} 8WLh]MD`  
} ^<5^9]x  
} '3Lx!pMhN  
I5|S8d<  
} aaqjE  
*$WiJ3'(m  
冒泡排序: ?tal/uC  
`rOe5Zp$  
package org.rut.util.algorithm.support; ;M(ehX  
6|(7G64{  
import org.rut.util.algorithm.SortUtil; Y GcY2p<  
!513rNO  
/** Wpg?%+Y  
* @author treeroot FdK R{dX}  
* @since 2006-2-2 wTJMq`sY_  
* @version 1.0 9g^./k\8%  
*/ w~FO:/  
public class BubbleSort implements SortUtil.Sort{ 9N3oVHc?  
.Q6{$Y%l  
/* (non-Javadoc) ve_4@J)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ht[TMdV  
*/ ,_X,V!  
public void sort(int[] data) { !gA^$(=:"  
int temp; tg m{gR  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jAQ)3ON<  
if(data[j] SortUtil.swap(data,j,j-1); ^PCL^]W  
} @v:ILby4-  
} 9M-]~.O  
} Z!5m'yZO  
} J4R  
5SPl#*W  
} 0ju wDd  
Pq_ApUZa  
选择排序: ^ _#gIT\  
S+\Mt+o  
package org.rut.util.algorithm.support; N[?4yV2s  
B )3SiU  
import org.rut.util.algorithm.SortUtil; #@OKp,LJ  
|H|eH~.yg&  
/** V'| g  
* @author treeroot B'#gs'fl  
* @since 2006-2-2 f@V{}&ZWp  
* @version 1.0 U:\oGa84A  
*/ =S?-=jPtg  
public class SelectionSort implements SortUtil.Sort { u BW  
!z&seG]@  
/* \2VZkVO9  
* (non-Javadoc) ?2bE=|  
* :-jP8X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mm9S#Ya  
*/ cB{;Nh6"  
public void sort(int[] data) { [7t0[U~3?  
int temp; <a/ZOuBzZ  
for (int i = 0; i < data.length; i++) { ;{)@ghD  
int lowIndex = i; l#(g&x6J  
for (int j = data.length - 1; j > i; j--) { ~'YSVx& )  
if (data[j] < data[lowIndex]) { I7-PF?  
lowIndex = j; looPO:bo^  
} UVuuIW0k  
} 0O 9 Lg}  
SortUtil.swap(data,i,lowIndex); M`g Kt (3  
} ,;- cz-,  
} Z~R/ p;@  
',-X#u  
} (fjXp75  
C @[9 LB  
Shell排序:  9%hB   
-T="Ml &  
package org.rut.util.algorithm.support; *{n,4d\..  
fJN9+l  
import org.rut.util.algorithm.SortUtil; :~YyHX  
%Zi,nHg8  
/** |D_n4#X7u  
* @author treeroot OsuSx^}  
* @since 2006-2-2 B 0fo[Ev  
* @version 1.0 pmXWI`s  
*/ a/xCl :=8q  
public class ShellSort implements SortUtil.Sort{ &[\arwe)  
dodz|5o%  
/* (non-Javadoc) gQzF C&g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i3\oy`GJ  
*/ G}OrpPP  
public void sort(int[] data) { ZCq\Zk1O&  
for(int i=data.length/2;i>2;i/=2){ mgl' d  
for(int j=0;j insertSort(data,j,i); 'k) P(H  
} HrcnyQ`Q0  
} l~ >rpG  
insertSort(data,0,1); #B{F{,vlu,  
} (#>5j7i8#  
e&I.kC"j6  
/** R~ u7;Wv  
* @param data D}=i tu  
* @param j ry=[:\Z~  
* @param i }T(q"Vf~  
*/ T%b^|="@  
private void insertSort(int[] data, int start, int inc) { fN/KXdAy&  
int temp; ]?5@ObG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ':fbf7EL<  
}  6}ewBAq%  
} /IR5[67  
} [&59n,R`  
 )"Yah  
} iw6M3g#  
+c2>j8e6  
快速排序: 5_T>HHR 6  
W`rE\P  
package org.rut.util.algorithm.support; -CNv=vj 3  
S 2` ;7  
import org.rut.util.algorithm.SortUtil; S`PSFetC  
Nr7.BDA  
/** l`G:@}P>G  
* @author treeroot o ieLh"$  
* @since 2006-2-2 ^hTJp{  
* @version 1.0 YXOD fd%L  
*/ tg4&j$  
public class QuickSort implements SortUtil.Sort{ %bETr"Xom  
$B N+SD!  
/* (non-Javadoc) (9QRg;   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~w% +y  
*/ w9}IM149  
public void sort(int[] data) { W..>Ny;'3  
quickSort(data,0,data.length-1); 3m9 E2R,  
} B}bNl 7 ~  
private void quickSort(int[] data,int i,int j){ }Qu 7o  
int pivotIndex=(i+j)/2; :Gk~FRA|  
file://swap zm.sX~j  
SortUtil.swap(data,pivotIndex,j); U*l>8  
Xm+3`$<  
int k=partition(data,i-1,j,data[j]); >I ; #BE3  
SortUtil.swap(data,k,j); u8\QhUk'G  
if((k-i)>1) quickSort(data,i,k-1); eJdQ7g[>  
if((j-k)>1) quickSort(data,k+1,j); "lya|;  
.=<pU k 3G  
} ) FsSXnZL  
/** aPMM:RP`  
* @param data %}MM+1eu  
* @param i h(K4AiGE  
* @param j %5w)}|fw  
* @return yL,B\YCf8  
*/ !KW)*  
private int partition(int[] data, int l, int r,int pivot) { z{_Vn(Kg   
do{ T+( A7Qrx%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ? =Qg  
SortUtil.swap(data,l,r); clV/i&]Qa  
} k18V4ATE]  
while(l SortUtil.swap(data,l,r); vK/Z9wR*05  
return l; U5s]dUs (  
} 'GT`% ck  
)^xmy6k  
} X~b+LG/  
8hV:bz"  
改进后的快速排序: ZPog)d@!  
tV%\Jk),  
package org.rut.util.algorithm.support; W u{nC  
.;Yei6H  
import org.rut.util.algorithm.SortUtil; AE~}^(G`  
Hc3/`.nt  
/** e6a8ad  
* @author treeroot @K> Pw arl  
* @since 2006-2-2 |bUmkw  
* @version 1.0 z<XS"4l?W  
*/ NsK>UJ'  
public class ImprovedQuickSort implements SortUtil.Sort { nr6U> KR^  
eHIC'b.  
private static int MAX_STACK_SIZE=4096; !9Ni[8&Fg0  
private static int THRESHOLD=10; @1X1E 2:  
/* (non-Javadoc) <FLc0s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TR7TF]itb  
*/ a2n#T,kq&  
public void sort(int[] data) { EPfVS  
int[] stack=new int[MAX_STACK_SIZE]; ,\"gN5[$(  
/d;l:  
int top=-1; =-Tetp  
int pivot; .v!e=i}.  
int pivotIndex,l,r; z81!F'x;  
3"RZiOyv  
stack[++top]=0; oZw#Nd   
stack[++top]=data.length-1; U{m:{'np(H  
KO7cZME  
while(top>0){ o^J&c_U\3'  
int j=stack[top--]; bBL"F!.  
int i=stack[top--]; }3e+D  
\6L=^q=  
pivotIndex=(i+j)/2; ".=EAXVU  
pivot=data[pivotIndex]; v-@@>?W-  
j$Co-b1  
SortUtil.swap(data,pivotIndex,j); rZ7 Ihof  
%&NK|M+n  
file://partition *?\Nioii  
l=i-1; <#Dc(VhT  
r=j; T9yW# .  
do{ %UhF=C  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G3n7x?4m  
SortUtil.swap(data,l,r); |&.)_+w  
} 4T-AWk  
while(l SortUtil.swap(data,l,r); l"Q8`  
SortUtil.swap(data,l,j); \U8Vsx1tl  
~CscctD{;  
if((l-i)>THRESHOLD){ ?U[AE -*  
stack[++top]=i; z9ZAY!Zhq]  
stack[++top]=l-1; +g&W423k_  
} jHzb,&  
if((j-l)>THRESHOLD){ wq#3f#3V  
stack[++top]=l+1;  73X]|fy  
stack[++top]=j; 4B 6Aw?  
} ^} #!?" Y  
KYaf7qy]  
} c{q`uI;O  
file://new InsertSort().sort(data); W1z5|-T  
insertSort(data); =nl,5^  
} 1lM0pl6M  
/** oB@C-(M  
* @param data z~al h?H  
*/ jXQ_7  
private void insertSort(int[] data) { wH.'EC  
int temp; -0{WB(P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZVL0S{V-mh  
} "-oC,;yq  
} 6fiJ' j@  
} cE[lB08  
6=k^gH[g  
} OWzIea@  
82<!b]^1  
归并排序: pY@+.V`a  
;f?bb*1  
package org.rut.util.algorithm.support; kaLRI|hC  
L.'N'-BV  
import org.rut.util.algorithm.SortUtil; l/5/|UE9  
`N0E;=g  
/** Et (prmH  
* @author treeroot P:+:Cm<  
* @since 2006-2-2 Syb:i(Y  
* @version 1.0 iGIaZ!j aW  
*/ {iRNnh   
public class MergeSort implements SortUtil.Sort{ "Q( 8FF  
m,b<b91  
/* (non-Javadoc) ~[{| s' )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rm7UFMCR6i  
*/ OR O~(%-(e  
public void sort(int[] data) { 4{_5z7ody  
int[] temp=new int[data.length]; RXDk8)^  
mergeSort(data,temp,0,data.length-1); w,&RHQB  
} N'StT$(  
(~#9KA1A}  
private void mergeSort(int[] data,int[] temp,int l,int r){ FVHL;J]nf1  
int mid=(l+r)/2; )Z#7%, o  
if(l==r) return ; ,3K?=e2  
mergeSort(data,temp,l,mid); AWzpk }\  
mergeSort(data,temp,mid+1,r); :c>,=FUT  
for(int i=l;i<=r;i++){ M:~#"lfK  
temp=data; ]KmYPrCl0  
} B4?P"|  
int i1=l; K"D9.%7  
int i2=mid+1; >_o_&;=`v  
for(int cur=l;cur<=r;cur++){ Kt-@a%O0  
if(i1==mid+1) <Aa%Uwpc  
data[cur]=temp[i2++]; Je'$V%{E  
else if(i2>r) KK?}`o  
data[cur]=temp[i1++]; ?$?Ni)Z  
else if(temp[i1] data[cur]=temp[i1++]; @'QBrE  
else "](~VF[J8  
data[cur]=temp[i2++]; XxGm,A+>Ty  
} bFpwq#PDW>  
} rr*IIG&.5  
E4{8 $:q=  
} a?;{0I:Ln  
U*Q$:%72vO  
改进后的归并排序: l!b#v`  
JkKI/ 5h  
package org.rut.util.algorithm.support; nm)F tX|A  
fu`oDi  
import org.rut.util.algorithm.SortUtil; QxK%ZaFZA  
*(rq AB0~  
/** SF6n06UZu  
* @author treeroot z)ydQw>  
* @since 2006-2-2 ms?h/*E<H  
* @version 1.0 ~9{.!7KPc  
*/ Vrnx# j-U  
public class ImprovedMergeSort implements SortUtil.Sort { (efH>oY[  
0wx`y$~R  
private static final int THRESHOLD = 10; 4x:fOhtP  
?h {&  
/* ;RR)C@n1  
* (non-Javadoc) ;y"DEFs,u  
* ykZ)`E]P`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <v\|@@X  
*/ Co'dZd(  
public void sort(int[] data) { A9"ho}<  
int[] temp=new int[data.length]; -kJ`gdS  
mergeSort(data,temp,0,data.length-1); 8?PNyO-Wt5  
} }&=C*5JN  
PKP( :3|  
private void mergeSort(int[] data, int[] temp, int l, int r) { xd* kNY  
int i, j, k; X0m\   
int mid = (l + r) / 2; EfOJ%Xr[,l  
if (l == r) 1&dWt_\  
return; rIXAn4,dTv  
if ((mid - l) >= THRESHOLD) @=$;^}JS|  
mergeSort(data, temp, l, mid); VL\6U05Z  
else | 2mEowAd  
insertSort(data, l, mid - l + 1); BM3nZ<%3  
if ((r - mid) > THRESHOLD) !Ed';yfz\(  
mergeSort(data, temp, mid + 1, r); k]v a  
else [j5L}e!T  
insertSort(data, mid + 1, r - mid); Uu G;z5  
N(D_*% 96  
for (i = l; i <= mid; i++) { G,J$lT X  
temp = data; @Fo0uy\ G  
} RsE+\)  
for (j = 1; j <= r - mid; j++) { y'(;!5w  
temp[r - j + 1] = data[j + mid]; K\uR=L7  
} 6%)dsTAB  
int a = temp[l]; !4|7U\;  
int b = temp[r]; HH>]"mv  
for (i = l, j = r, k = l; k <= r; k++) { /@0wbA  
if (a < b) { .6r&<*  
data[k] = temp[i++]; U:_&aY_  
a = temp; :Bl $c,J  
} else { xC|7"N^/  
data[k] = temp[j--]; *r%=p/oQ}B  
b = temp[j]; |W?x6]~.R  
} !?]NMf_  
} E}~ GXG  
} */6PkNq  
vrH/Z.WD  
/** :Vv=p*~  
* @param data 7dAa~!/(  
* @param l &QvWT+]c'0  
* @param i ^!=+$@<  
*/ PQ1\b-I  
private void insertSort(int[] data, int start, int len) { .Zo8KwkFY  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cd\0  
} @;pTQ 5 I  
} S/8xo@vct]  
} gg933TLu(Q  
} xmbkn}@A  
Tc{r}y[)  
堆排序: }y'KS:Jb  
h T4fKc7P  
package org.rut.util.algorithm.support; u"nyx0<  
tlc&Wx  
import org.rut.util.algorithm.SortUtil; !tN]OQ)'  
|XPT2eQ{  
/** QH;1*  
* @author treeroot ;|66AIwDe  
* @since 2006-2-2 s2q#D.f  
* @version 1.0  dY|(  
*/ lr=*Ty(V  
public class HeapSort implements SortUtil.Sort{ DT;Hr4Z8^"  
e:&5Cvx  
/* (non-Javadoc) {~VgXkjsC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5X'[{'i,  
*/ O]`CSTv'_  
public void sort(int[] data) { j$BM$q/c  
MaxHeap h=new MaxHeap(); F8.Fp[_tM  
h.init(data); #TRPq>XzD  
for(int i=0;i h.remove(); 7h,SX]4Q  
System.arraycopy(h.queue,1,data,0,data.length); %*zgN[/w  
} gFJd8#6t  
/&a[D 2  
private static class MaxHeap{ VcA87*pel  
YaDr6)  
void init(int[] data){ Sky!ZN'I  
this.queue=new int[data.length+1]; PO1sVP.S  
for(int i=0;i queue[++size]=data; [T.kwQf4$  
fixUp(size); D>PB|rS@  
} xrS;06$  
} ^I@43Jy/  
[{L4~(uU8  
private int size=0; %3|0_  
(Jy7  
private int[] queue; /(5 SJ(a  
?tSFM:9PU  
public int get() { ?FxxH*>"  
return queue[1]; M5CFW >T  
} (ybKACx  
bR(rZu5  
public void remove() { H4MFTnJ{  
SortUtil.swap(queue,1,size--); d?.ewsC  
fixDown(1); 8W9kd"=U  
} Y 8EL  
file://fixdown <T,vIXwu+  
private void fixDown(int k) { 0PjWfM8%  
int j; \GEFhM4)  
while ((j = k << 1) <= size) { -$>R;L  
if (j < size %26amp;%26amp; queue[j] j++; LY-fp+  
if (queue[k]>queue[j]) file://不用交换 ?l &S:` L  
break; p$0G EYwM  
SortUtil.swap(queue,j,k);  (0bvd  
k = j; amK"Z<V F  
} TkM8GK-3  
} q]DV49UK  
private void fixUp(int k) { C5c@@ch :  
while (k > 1) { ia?{]!7$  
int j = k >> 1; c=0S]_  
if (queue[j]>queue[k]) E.R,'Y;x  
break; Ivmiz{Oii  
SortUtil.swap(queue,j,k); Ys|tGU  
k = j; .i) H1sD  
} <j+DY@*  
} bx#GOK-  
/PafIq  
} ZBUEg7c  
~xer ZQgc  
} Rt}H.D #  
zW+X5yK  
SortUtil: m0DD|7}+  
%wzDBsX  
package org.rut.util.algorithm; _ fJ 5z  
8M <q-sn4B  
import org.rut.util.algorithm.support.BubbleSort; d="Oge8  
import org.rut.util.algorithm.support.HeapSort; Dp3&@M"^yY  
import org.rut.util.algorithm.support.ImprovedMergeSort; <lopk('7  
import org.rut.util.algorithm.support.ImprovedQuickSort; P-o/ax  
import org.rut.util.algorithm.support.InsertSort; U-&dn%Sq  
import org.rut.util.algorithm.support.MergeSort; o$)pJ#";F  
import org.rut.util.algorithm.support.QuickSort; ]%>7OH'  
import org.rut.util.algorithm.support.SelectionSort; |qnAqzK|  
import org.rut.util.algorithm.support.ShellSort; aAhXHsZ|26  
;x^WPY Ej  
/** .jA'BF.  
* @author treeroot ^K. d|z  
* @since 2006-2-2 P/6$ T2k_  
* @version 1.0 I|8'#QX  
*/ ^yL6A1  
public class SortUtil { 2.)xWCG  
public final static int INSERT = 1; c5C 2xE}T  
public final static int BUBBLE = 2; 094~  s  
public final static int SELECTION = 3; WT;4J<O/  
public final static int SHELL = 4; #bc$[%_  
public final static int QUICK = 5; W5z<+8R  
public final static int IMPROVED_QUICK = 6; / Vy pN,  
public final static int MERGE = 7; t.Q}V5t{g  
public final static int IMPROVED_MERGE = 8; {Rc mjI7  
public final static int HEAP = 9; K9O%SfshF  
xVw9_il2a  
public static void sort(int[] data) { jGy%O3/  
sort(data, IMPROVED_QUICK); cLhHGwX=x  
} u5zL;C3O  
private static String[] name={ {BPNb{dBKr  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?&A)%6` ~  
}; w*#B_6bG  
HEh,Cf7`'  
private static Sort[] impl=new Sort[]{ Se~< Vpo  
new InsertSort(), Ck.LsL-  
new BubbleSort(), rH Y SS0*3  
new SelectionSort(), G8AT] =  
new ShellSort(), }.*"ezaZw  
new QuickSort(), Jy<hTd*q  
new ImprovedQuickSort(), oHh~!#u  
new MergeSort(), 1 1Sflj  
new ImprovedMergeSort(), m03D+@F  
new HeapSort() JV_VF'  
}; @N+ }cej  
NN> E1d=  
public static String toString(int algorithm){  rG[iEY  
return name[algorithm-1]; m-T@Og  
} >2v UFq`H  
QiO4fS'~W  
public static void sort(int[] data, int algorithm) { r:N =?X`N  
impl[algorithm-1].sort(data); LL% Aw)Q`  
} 1'Sr0 oEd3  
5\!t!FL_  
public static interface Sort { n1!hfu7@s  
public void sort(int[] data); NSs"I]  
} D/U=zDpiB  
q~:H>;:G-  
public static void swap(int[] data, int i, int j) { zP554Gr?  
int temp = data; oW ! Z= ;  
data = data[j]; n $Nb,/o  
data[j] = temp; z3-A2#c  
} <e&88{jJ  
} ''D\E6c\  
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