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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。 ]> nPqL  
插入排序: o,?!"*EP  
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package org.rut.util.algorithm.support; +"k.E x0:  
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import org.rut.util.algorithm.SortUtil; gHQPhe#n  
/** TqS2!/jp  
* @author treeroot &u+yM D  
* @since 2006-2-2 [NHg&R H  
* @version 1.0 RDUT3H6~  
*/ e1^fUOS  
public class InsertSort implements SortUtil.Sort{ E:08%4O  
ad"'O]  
/* (non-Javadoc) \@Ee9C 13  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p&i. )/  
*/ a$C2}  
public void sort(int[] data) { Ho|o,XvLv  
int temp; hMNJ'i}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wyy^gJl  
} wVx,JL5Jr  
} =LlLE<X"%x  
} FWuw/b$  
/Jh1rck  
} $T"h";M)s  
Ap11b|v  
冒泡排序: `+roQX.p  
Z7JKaP9{:  
package org.rut.util.algorithm.support; y\^@p=e  
O{PW  
import org.rut.util.algorithm.SortUtil; nAIH`L"X  
5JS ZLC  
/** xLA~1ZSVJw  
* @author treeroot nYOY"'z  
* @since 2006-2-2 +J"'  'cZ  
* @version 1.0 n4^~gT%b5]  
*/ L<bYRGz  
public class BubbleSort implements SortUtil.Sort{ J"diFz+20  
fx<FIj7  
/* (non-Javadoc) sB?2*S"X)<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8$\Za,)g  
*/ bsB},pc  
public void sort(int[] data) { _~tm7o+js  
int temp; FXS^^p P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cb +l"FI7  
if(data[j] SortUtil.swap(data,j,j-1); ^:m^E0(H  
} p={Jf}v  
} `-4'/~G  
} [-4KY4R  
} :%N*{uy  
wz|DT3"Xs  
} z(+&wa  
T_eJ}(p  
选择排序: VLiIO"u;  
9*4 .  
package org.rut.util.algorithm.support; *dN N<  
q^5yk=2fq  
import org.rut.util.algorithm.SortUtil; >L^xlm%7o  
| z:Q(d06  
/** q7|:^#{av  
* @author treeroot  #;`Oj  
* @since 2006-2-2 27m@|M] R  
* @version 1.0 W$r^  
*/ @cZ\*,T  
public class SelectionSort implements SortUtil.Sort { fb23J|"  
xPt*CB  
/* 7skljw(  
* (non-Javadoc) ZT6V/MD7T.  
* _l<mu?"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cg,Ua!c  
*/ @@Q6TB  
public void sort(int[] data) { (z/jMMms  
int temp; j?xk&  
for (int i = 0; i < data.length; i++) { D z@1rc<B  
int lowIndex = i; \SOeTn+  
for (int j = data.length - 1; j > i; j--) { .l \r9I(  
if (data[j] < data[lowIndex]) { $ADPV,*gG  
lowIndex = j; "qawq0P8Z  
} (%bE~Q2P*<  
} w#&z]O9r  
SortUtil.swap(data,i,lowIndex); COSTV>s;  
} IK'F{QPH  
} b vRB  
gY!N3 *:  
} lkb2?2\+  
_%{0?|=  
Shell排序: .$Y? W<  
oE1M/*myS  
package org.rut.util.algorithm.support; 34z+INkX  
X]!D;7^  
import org.rut.util.algorithm.SortUtil; i E9\_MA  
]KWK}Zyi  
/** /Pk:4,  
* @author treeroot O=aw^|oj]  
* @since 2006-2-2 !4t`Hv?'  
* @version 1.0 vG~+r<:  
*/ B!}BM}r  
public class ShellSort implements SortUtil.Sort{ _8^0!,j  
K\(6 rS}N  
/* (non-Javadoc) n3$gx,KL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vM(Xip7  
*/ 3rNc1\a;  
public void sort(int[] data) { T`\]!>eb  
for(int i=data.length/2;i>2;i/=2){ "]#'QuR  
for(int j=0;j insertSort(data,j,i); ul@3 Bt  
} I^G^J M!  
} UW6VHA>  
insertSort(data,0,1); 26.)Ur<F  
} &tj0M.-  
'w.}2(  
/** ,hWcytzEw  
* @param data =IZ[_ /@  
* @param j _{$fA6C  
* @param i 4&{!M _  
*/ &s8<6P7  
private void insertSort(int[] data, int start, int inc) { PNpu*# Z`  
int temp; I8u!\F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 59 <hV?  
} zsVcXBz  
} =((yWn+t  
} OPuj|%Wgw  
OxQYNi2  
} 'Jydu   
% :/_f  
快速排序: E!! alc{  
.'j29 6[u  
package org.rut.util.algorithm.support;  $:EG%jl  
Uw)=WImz[  
import org.rut.util.algorithm.SortUtil; CxDcY  
6+3$:?  
/** jj,r <T  
* @author treeroot l5k?De_(x  
* @since 2006-2-2 {<K=*r rZ  
* @version 1.0 9x?'}  
*/ 8sg|MWSU  
public class QuickSort implements SortUtil.Sort{ ?:igumeYX  
Fp%Ln(/m  
/* (non-Javadoc) gn)R^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !D:Jbt@R<n  
*/ S!h Xf|*0[  
public void sort(int[] data) { 0%<+J;'o  
quickSort(data,0,data.length-1); !E0!-UpY  
} c)~h<=)  
private void quickSort(int[] data,int i,int j){ aSL6zye ,  
int pivotIndex=(i+j)/2; $UvPo0{  
file://swap `/4:I  
SortUtil.swap(data,pivotIndex,j); "^Rv#  
YQd:M%$  
int k=partition(data,i-1,j,data[j]); OlY$ v@|  
SortUtil.swap(data,k,j); CU$#0f>  
if((k-i)>1) quickSort(data,i,k-1); bd== +   
if((j-k)>1) quickSort(data,k+1,j); >c~RI7uu  
~3CVxbB^<  
} IQnIaZ  
/** z9DcnAs  
* @param data U~H?4Izl=  
* @param i cWa)#:JOV  
* @param j U>F{?PReA?  
* @return 9v?l  
*/ "9XfQ"P  
private int partition(int[] data, int l, int r,int pivot) { Ew$I\j*  
do{ aG{$Ic  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u9Y3?j,oC  
SortUtil.swap(data,l,r); ] fwZAU  
} U|5-0u5  
while(l SortUtil.swap(data,l,r); ,_ .v_  
return l; S3Y2O x  
} VhEka#  
lH2wG2  
} h<x4YB5Mj  
80;n|nNB  
改进后的快速排序: FTf<c0  
P^)q=A8Z#  
package org.rut.util.algorithm.support; 4kl Ao$  
X`JV R"=4  
import org.rut.util.algorithm.SortUtil; ?*u*de[,  
S6D^3n  
/** gl7|H&&xV  
* @author treeroot Hd &{d+B  
* @since 2006-2-2 C6  "  
* @version 1.0 ,6,]#R :J  
*/ m3.sVI0I  
public class ImprovedQuickSort implements SortUtil.Sort { Q(Gl{#b  
nwmW.(R4  
private static int MAX_STACK_SIZE=4096; GF$`BGW  
private static int THRESHOLD=10; x#H 3=YD*  
/* (non-Javadoc) N#ioJ^}n:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X+82[Y,mB.  
*/ $`J_:H%  
public void sort(int[] data) { ig!7BxM)<h  
int[] stack=new int[MAX_STACK_SIZE]; )rtomp:X  
o:p *_>&  
int top=-1; szmmu*F,U:  
int pivot; dl~|Izm  
int pivotIndex,l,r; cg{AMeW  
j !H^-d}q  
stack[++top]=0; S\#17.=  
stack[++top]=data.length-1; 3tAU?sV!  
bt/ =Kq#  
while(top>0){ T+IF}4e d  
int j=stack[top--]; /)L 0`:I#  
int i=stack[top--]; rcN 9.1  
]! *[Q\  
pivotIndex=(i+j)/2; z-T{~{q  
pivot=data[pivotIndex]; }q[Bd  
>BVoHt~;  
SortUtil.swap(data,pivotIndex,j); e'9r"<>i  
}} ZY  
file://partition rS8 w\`_  
l=i-1; ~O6\6$3b5E  
r=j; nH-V{=**  
do{ $XnPwOj  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >3.X?  
SortUtil.swap(data,l,r); tJ0NPI56yP  
} r 2:2,5_  
while(l SortUtil.swap(data,l,r); /)3Lnn{W  
SortUtil.swap(data,l,j); [1yq{n=  
0<p{BL 8  
if((l-i)>THRESHOLD){ R.9V,R5  
stack[++top]=i; j2 %^qL  
stack[++top]=l-1; \cJa;WM>  
} PkuTg";  
if((j-l)>THRESHOLD){ (5Nv8H8|  
stack[++top]=l+1; `'S0*kMT  
stack[++top]=j; 9 ; i\g=  
} Cb;WZ3HR  
 ti@kKz  
} /~p+j{0L3W  
file://new InsertSort().sort(data); =/0=$\Ws  
insertSort(data); {w6/[ -^  
} `Ityi}  
/** .ic:`1  
* @param data OQ&'Dti  
*/ RP4Ku9hk  
private void insertSort(int[] data) { ~ 5"JzT  
int temp; @OpNHQat9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /0MDISQy9  
} *# {z3{+  
}  ;q>9W,jy  
} yHo[{,4itA  
w?Ju5 5  
} <If35Z)~  
}28=  
归并排序: , E )|y4  
0MF}^"R  
package org.rut.util.algorithm.support; c]k*}W3T  
_ QOZ sEe  
import org.rut.util.algorithm.SortUtil; $.%rAa_H  
Fg]?zEa  
/** sBX-X$*N  
* @author treeroot ^Q<mV*~  
* @since 2006-2-2 Wi. 5Y{  
* @version 1.0 t<iEj"5  
*/ X;F8_+Np  
public class MergeSort implements SortUtil.Sort{ I^\&y(LJF  
*XOJnyC_H  
/* (non-Javadoc) &EGqgNl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q'[}9e`Q  
*/ w*9br SK  
public void sort(int[] data) { 26?W nu60  
int[] temp=new int[data.length]; W#fZ1E6  
mergeSort(data,temp,0,data.length-1); da!P0x9p  
} ] y{WD=T  
OPJ: XbG  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y$K!7Kq  
int mid=(l+r)/2; CT a#Q,  
if(l==r) return ; .wA+S8}S  
mergeSort(data,temp,l,mid); t&q N: J  
mergeSort(data,temp,mid+1,r); jEdtJ EPa  
for(int i=l;i<=r;i++){ 0 fXLcal  
temp=data; ,8'>R@o  
} @D^^_1~  
int i1=l; u^Ku;RQo  
int i2=mid+1; Uh eC  
for(int cur=l;cur<=r;cur++){ oTjyN\?H  
if(i1==mid+1) 2NGe C0=  
data[cur]=temp[i2++]; p/Sbt/R  
else if(i2>r) :'L2J  
data[cur]=temp[i1++]; URgk^nt2p  
else if(temp[i1] data[cur]=temp[i1++]; 7R.Q Ql  
else EI~"L$?  
data[cur]=temp[i2++]; .jw}JJ  
} {]*x*aa\  
} rHge~nY<  
/&#XhrT  
} lA(Q@yEW  
/'2O.d0}.  
改进后的归并排序: ) /vhclkb  
8F(h*e_?  
package org.rut.util.algorithm.support; C;+(Zp  
@Hb'8F  
import org.rut.util.algorithm.SortUtil; fc=Patg  
:#E*Y8-  
/** @:0ddb71  
* @author treeroot @!N-RQ&A  
* @since 2006-2-2 bu7'oB~:V^  
* @version 1.0 2aZw[7s  
*/ %_-zWVJ  
public class ImprovedMergeSort implements SortUtil.Sort { 9h90huyKF  
#m{{a]zm^  
private static final int THRESHOLD = 10; 8M*PML4r  
rPNb\Ri  
/* 63|+2-E2Q  
* (non-Javadoc) BcjP+$k4_  
* ^mWybPqx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8b.u'r174  
*/ W W2Ob*  
public void sort(int[] data) { <:FP4e "(  
int[] temp=new int[data.length]; u=F+(NE"  
mergeSort(data,temp,0,data.length-1); \6?A!w~6  
} #o/ H~Iv  
#ge)2  
private void mergeSort(int[] data, int[] temp, int l, int r) { \@3Qi8u//  
int i, j, k; 9Ya<My  
int mid = (l + r) / 2; 1 2++RkL#  
if (l == r) up3O|lj4  
return; -4rDbDsr  
if ((mid - l) >= THRESHOLD) kd:$oS_*s  
mergeSort(data, temp, l, mid); #PDf,^  
else HjqB^|z  
insertSort(data, l, mid - l + 1); ,B(7\  
if ((r - mid) > THRESHOLD) /iNa'W5\  
mergeSort(data, temp, mid + 1, r); >h2%[j=  
else uJHu>M}~  
insertSort(data, mid + 1, r - mid); v[@c*wo  
-! ;l~#K=  
for (i = l; i <= mid; i++) { G&xo1K]  
temp = data; hv6@Jr3  
} _Y=2/*y^  
for (j = 1; j <= r - mid; j++) { <^~FLjsfg  
temp[r - j + 1] = data[j + mid]; _I`,Br:N  
} h eaRX4  
int a = temp[l]; U-k+9f 0  
int b = temp[r]; P&d"V<  
for (i = l, j = r, k = l; k <= r; k++) { b*;"q9u5  
if (a < b) { 2$_9cF Wm  
data[k] = temp[i++]; ^,F;M`[  
a = temp; 6$a$K,dZ  
} else { ;= j@, yu  
data[k] = temp[j--]; k:2QuG^  
b = temp[j]; C 3hv*  
} x^|Vaf  
} IEjP<pLe  
} pL1Q7&&c0  
6iEhsL&K  
/** zf4Ec-)  
* @param data fPi3s b`}  
* @param l \T]EZ'+O  
* @param i f\+f o  
*/ Iz6y{E  
private void insertSort(int[] data, int start, int len) { #j#_cImE  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |py6pek|  
} uPYmHA} _/  
} gj\)CBOv  
} 9!9Z~ /*m  
} W3vi@kb]  
!3i Gz_y  
堆排序: ;!91^Tl  
k4qp u=@U  
package org.rut.util.algorithm.support; \Gm-MpW  
%p^.\ch9  
import org.rut.util.algorithm.SortUtil; l$K,#P<)  
AM"Nn L"  
/** 4!asT;`'  
* @author treeroot Q6o(']0  
* @since 2006-2-2 ZT02"3F  
* @version 1.0 `r5 $LaD  
*/ T5Q{{@Q  
public class HeapSort implements SortUtil.Sort{ 'Y$R~e^Y?  
`c/*H29  
/* (non-Javadoc) -/_L*oYli  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AC O)Dt(Y  
*/ GV)<Q^9  
public void sort(int[] data) { 2f U$J>Y  
MaxHeap h=new MaxHeap(); !zPG? q]3  
h.init(data); "dR |[a<#g  
for(int i=0;i h.remove(); <APB11  
System.arraycopy(h.queue,1,data,0,data.length); mrm^e9*Z  
} >FhK #*Pa  
,f}UGd[a  
private static class MaxHeap{ ug{R 3SS  
22kpl)vbU  
void init(int[] data){ 2,lqsd:xM  
this.queue=new int[data.length+1]; "#v=IJy&r  
for(int i=0;i queue[++size]=data; vHAg-Av c  
fixUp(size); wU#F_De)R:  
} k>dsw:  
} ^gV T$A  
8Qh#)hiW!  
private int size=0; $Vc~/>  
ut >4U'.H  
private int[] queue; v7%X@j]ji  
t9&c E:n  
public int get() { 0Io'bF  
return queue[1]; .nYUL>  
} #jAqra._b  
UgWs{y2SE.  
public void remove() { nR4y`oP+  
SortUtil.swap(queue,1,size--); :{NC-%4o0  
fixDown(1); f84:hXo6  
} ,uzN4_7u  
file://fixdown *. 3N=EO  
private void fixDown(int k) { fzjU<?}  
int j; X7,PEA  
while ((j = k << 1) <= size) { Q'k\8'x  
if (j < size %26amp;%26amp; queue[j] j++; [4fU+D2\d  
if (queue[k]>queue[j]) file://不用交换 iK?b~Q  
break; i,13b e  
SortUtil.swap(queue,j,k); Z%GTnG|rG  
k = j; -XRn~=5   
} 3nY1[,  
} }HE6aF62O  
private void fixUp(int k) { sC[yI Up  
while (k > 1) { JFgoN,xn  
int j = k >> 1; Bl9jkq ]  
if (queue[j]>queue[k]) {lth+{&L#  
break; `mye}L2I  
SortUtil.swap(queue,j,k); CG'.:` t  
k = j; lpH=2l$>?  
} Ro2d,'   
} `h}q Eo`  
9N%JP+<89  
} H _Va"yTO6  
nhG J  
} "O8gJ0e  
IV lf=k  
SortUtil: Hi_ G  
bCZ g cN  
package org.rut.util.algorithm; $A3<G-4O  
/6O??6g  
import org.rut.util.algorithm.support.BubbleSort; 1FtM>&%4  
import org.rut.util.algorithm.support.HeapSort; uxg9yp@|  
import org.rut.util.algorithm.support.ImprovedMergeSort; X0 -IRJ[  
import org.rut.util.algorithm.support.ImprovedQuickSort; dD<fn9t  
import org.rut.util.algorithm.support.InsertSort; lnE+Au'  
import org.rut.util.algorithm.support.MergeSort; -@>BHC  
import org.rut.util.algorithm.support.QuickSort; < j$#9QQ1  
import org.rut.util.algorithm.support.SelectionSort; "RVcA",  
import org.rut.util.algorithm.support.ShellSort; X7L8h'(@  
m]*Bx%-1c  
/** vK$"# F~  
* @author treeroot *5<Sr q'  
* @since 2006-2-2 1 nvTce  
* @version 1.0 '8Phxx|  
*/ |*RYq2y  
public class SortUtil { A]L%dFK  
public final static int INSERT = 1; ??hJEE  
public final static int BUBBLE = 2; %+ZJhHT  
public final static int SELECTION = 3; $,xnU.n  
public final static int SHELL = 4; bqanFQj  
public final static int QUICK = 5; O4<g%.HC6  
public final static int IMPROVED_QUICK = 6; a?yMHb{F  
public final static int MERGE = 7; yT{8d.Rh  
public final static int IMPROVED_MERGE = 8; 2iu_pjj  
public final static int HEAP = 9; vpPl$ga5bY  
E,n}HiAz7V  
public static void sort(int[] data) { $8l({:*q0  
sort(data, IMPROVED_QUICK); Wl h~)   
} B*htN  
private static String[] name={ R(j1n,c]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D@EO=08<b  
}; ,Ma.V\T[  
Y32O-I!9u  
private static Sort[] impl=new Sort[]{ 4/ X/>Y1  
new InsertSort(), ^$%Z! uz  
new BubbleSort(), )Qm[[pnj  
new SelectionSort(), "uLjIIl  
new ShellSort(), )XQ`M?**M  
new QuickSort(), ? muzU.h"z  
new ImprovedQuickSort(), B= keBO](@  
new MergeSort(), %LXM+<N8  
new ImprovedMergeSort(), "o& E2#  
new HeapSort()  s95vK7I  
}; {b]aC  
_md=Q$9!m  
public static String toString(int algorithm){ UN"(5a8.  
return name[algorithm-1]; s<x1>Q7X~  
} nS()u}c;r  
U $Qv>7  
public static void sort(int[] data, int algorithm) { Hn,:`mj4-6  
impl[algorithm-1].sort(data); ,fEO> i  
} Z -%(~  
61U<5:#l  
public static interface Sort { Cw5%\K$=  
public void sort(int[] data); R~bC,`Bh  
} , n !vsIN  
a:~@CUD >I  
public static void swap(int[] data, int i, int j) { _w@qr\4i=  
int temp = data; "QoQ4r<|  
data = data[j]; 3cj3u4y  
data[j] = temp; !? ^h;)a  
} P?BGBbC  
} {f9{8-W <u  
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