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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。 A}O9e  
插入排序: (.) s =  
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package org.rut.util.algorithm.support; bBL"F!.  
o$;x[US  
import org.rut.util.algorithm.SortUtil; 1k(*o.6  
/** |'#NDFI>}  
* @author treeroot M3;B]iRQD  
* @since 2006-2-2 *?\Nioii  
* @version 1.0 zc5_;!t  
*/ J(GLPCO$K  
public class InsertSort implements SortUtil.Sort{ y+<HS]vyV  
+/'jX?7x%  
/* (non-Javadoc) [0emOS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R8)"M(u=l  
*/ =XB)sC%  
public void sort(int[] data) { KYaf7qy]  
int temp; ,GlK_-6>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lw{|~m5`  
} Zx{'S3W  
} =T`-h"E~@  
} g*uO IF  
a;sZNUSn  
} ~gD'up@$/  
6fiJ' j@  
冒泡排序: bC|~N0b  
OWzIea@  
package org.rut.util.algorithm.support; PE>_;k-@k  
;f?bb*1  
import org.rut.util.algorithm.SortUtil; g& Rk}/F  
[%pZM.jFO  
/** h kY E7  
* @author treeroot f~Su F,o@h  
* @since 2006-2-2 h2nyP  
* @version 1.0 QK\z-'&n  
*/ @{G(.S  
public class BubbleSort implements SortUtil.Sort{ /(w5S',EL  
e;$s{CNo  
/* (non-Javadoc) $A ,=z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7pNh|#Uv'  
*/ 2=  _.K(  
public void sort(int[] data) { 6=FuH@Q&  
int temp; 3 V<8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?w+T_EH  
if(data[j] SortUtil.swap(data,j,j-1); P-C_sj A7  
} Gu-Sv!4p  
} q)/4i9  
} C^a~)r.h  
} bF.Aj8ZQ  
'"&?u8u)  
} :MpCj<<[  
F {[Q  
选择排序: *QLbrR  
vc<8ApK3V  
package org.rut.util.algorithm.support; A 6d+RAx  
$I'ES#8P6  
import org.rut.util.algorithm.SortUtil; `?)i/jko"  
^6=nL<L  
/** C-M op,w  
* @author treeroot <K43f#%  
* @since 2006-2-2 !@Ox%vK  
* @version 1.0 8WvT0q>]  
*/ 1@am'#<  
public class SelectionSort implements SortUtil.Sort { ~9{.!7KPc  
~[C m#c  
/* TCVJ[LbJ  
* (non-Javadoc) ;3w W)gL1  
* xN5}y3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6|zA,-=  
*/ ZjzQv)gZ  
public void sort(int[] data) { :G!Kaa,r  
int temp; 6wGf47  
for (int i = 0; i < data.length; i++) { }&=C*5JN  
int lowIndex = i; $ZA71TzMV  
for (int j = data.length - 1; j > i; j--) { q|~9%Pujg  
if (data[j] < data[lowIndex]) { d+_qBp  
lowIndex = j; m^wYRA.  
} &ha39&I  
} H]SnM'Y  
SortUtil.swap(data,i,lowIndex); pvX\k X3}  
} LB>!%Vx  
} ?g!)[p`v  
"2 Kh2[K  
} ;&iQNXL  
$ED<:[3N  
Shell排序: RJ0w3T]7  
#q%&,;4  
package org.rut.util.algorithm.support; (mv8_~F0  
zgLm~  
import org.rut.util.algorithm.SortUtil; n#4Ra+dD  
xC|7"N^/  
/** :}Z+K*%o-  
* @author treeroot N/Z<v* i"  
* @since 2006-2-2 myH#.$=A  
* @version 1.0 ^)X^Pcx  
*/  MgA6/k  
public class ShellSort implements SortUtil.Sort{ 4\t9(_  
IXg0g<JZ  
/* (non-Javadoc) Pj^6.f+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cd\0  
*/ F$d`Umqs;P  
public void sort(int[] data) { gg933TLu(Q  
for(int i=data.length/2;i>2;i/=2){ sq*sbdE  
for(int j=0;j insertSort(data,j,i); }y'KS:Jb  
} OD{Rh(Id  
} H$Q_K<V  
insertSort(data,0,1); x#U?~6.6  
} Bisht%]^  
?!b}Ir<1j  
/** JWC{"6  
* @param data gJ:Z7b  
* @param j nXXyX[c4e  
* @param i 7u0!Q\  
*/ st~f}w@  
private void insertSort(int[] data, int start, int inc) { *Z Aue.  
int temp; ]^R;3kU4Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T~_+\w  
} #TRPq>XzD  
} D}Z].c@ E  
} )/UPDdO  
|K7JU^"OQ  
} a,!c6'QE  
`G,\=c~{A  
快速排序: A6= Um%T  
}m(u o T~  
package org.rut.util.algorithm.support; 8nW#Q <s  
Mvu!  
import org.rut.util.algorithm.SortUtil; 58{6kJ@  
Z#%4QIz ?  
/** Od)]FvO  
* @author treeroot !'[f!vsyM{  
* @since 2006-2-2 O$<kWSC  
* @version 1.0 ["kk.*&  
*/ 6l<q  
public class QuickSort implements SortUtil.Sort{ YOd 0dKe  
%TP0i#J  
/* (non-Javadoc) ,aU_bve  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !D!Q]M5oU  
*/ \IQf|  
public void sort(int[] data) { QQj)"XJ29  
quickSort(data,0,data.length-1); =LC:1zn4  
} amK"Z<V F  
private void quickSort(int[] data,int i,int j){ B~G ?&"]  
int pivotIndex=(i+j)/2; ~K5eO-  
file://swap P|Dw +lQj  
SortUtil.swap(data,pivotIndex,j); l q~^&\_#  
nn5tOV}QE  
int k=partition(data,i-1,j,data[j]); }.>( [\ q  
SortUtil.swap(data,k,j); bx#GOK-  
if((k-i)>1) quickSort(data,i,k-1); :<r.n "  
if((j-k)>1) quickSort(data,k+1,j); 40w,:$  
|#^wYZO1U  
} bH%k)  
/** 9nN$%(EO5;  
* @param data mmE\=i~  
* @param i Dp3&@M"^yY  
* @param j dDK4I3a  
* @return 0JN>w^  
*/ O/Ub{=g  
private int partition(int[] data, int l, int r,int pivot) { hd^?mZ  
do{ >4 4A  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); % put=I  
SortUtil.swap(data,l,r); ^cs:S-s  
} S:aAR*<6  
while(l SortUtil.swap(data,l,r); SaceIV%(  
return l; @-qS[bV  
} E!nEB(FD  
WT;4J<O/  
} C,r[H5G#  
$a.fQ<,\X  
改进后的快速排序: \]uD"Jqv#  
xMsSZ{j%5  
package org.rut.util.algorithm.support; s\O4D*8  
Jmg<mjq/G  
import org.rut.util.algorithm.SortUtil; R!{^qHb  
Hj(ay4 8  
/** H2[VZ&Pg  
* @author treeroot $23*:)&J4  
* @since 2006-2-2 !8YZ;l  
* @version 1.0 r{2V`h1/|  
*/ T-,T)R`R  
public class ImprovedQuickSort implements SortUtil.Sort { l ld,&N8  
nY y%=B|>  
private static int MAX_STACK_SIZE=4096;  ja!K2^  
private static int THRESHOLD=10; NN> E1d=  
/* (non-Javadoc) 8G3CQ]G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K!~j}z*  
*/ 0#Ivo<V  
public void sort(int[] data) { ufl[sj%^|  
int[] stack=new int[MAX_STACK_SIZE]; 'C[{cr.`  
GO&~)Vh&7  
int top=-1; 0n dk=V  
int pivot; E3hql3=  
int pivotIndex,l,r; im,H|u_f4  
J)o.@+Q}  
stack[++top]=0; <e&88{jJ  
stack[++top]=data.length-1; qe^d6  
M9~eDw'Pr  
while(top>0){ U)v){g3w)  
int j=stack[top--]; SfTTB'9  
int i=stack[top--]; y-#{v.|L  
0c}pg:XT  
pivotIndex=(i+j)/2; oz8z%*9 (  
pivot=data[pivotIndex]; !V.2~V[^M  
3g79pw2w=  
SortUtil.swap(data,pivotIndex,j); 4e`GMtp  
7l%]O}!d)  
file://partition ;D8175px;  
l=i-1; , B90r7K:  
r=j; yV.E+~y  
do{ =`st1K  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DjLSl,Z  
SortUtil.swap(data,l,r); <Pn]{N  
} |(eRv?Qy@  
while(l SortUtil.swap(data,l,r); ~SzHIVj:6  
SortUtil.swap(data,l,j); #3~hF)u&/  
I@/s&$H`l  
if((l-i)>THRESHOLD){ f[ 'uka.U  
stack[++top]=i; |7# S0Ca@  
stack[++top]=l-1; OUtXu7E$  
} 3a Y^6&  
if((j-l)>THRESHOLD){ 0 k (su  
stack[++top]=l+1; !+EE*-c1c  
stack[++top]=j; *`]#ntz9  
} 8pXului  
F[@M?  
} '}5Yc,  
file://new InsertSort().sort(data); aam6R/4  
insertSort(data); kVRh/<s  
} O~*`YsL9  
/** w}rsboU  
* @param data ^]zC~LfG  
*/ (5/>arDn  
private void insertSort(int[] data) { <| =^['vi  
int temp; wZnv*t_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S_ER^Pkg  
} o4t6NDa  
} # ? _8 *?  
} '$0~PH&  
]jRaR~[UN  
} MszX9wl  
h0z>dLA#2  
归并排序: 5Tg[-tl  
d:!A`sk7  
package org.rut.util.algorithm.support; Q<O(Ix  
AuIg=-xR  
import org.rut.util.algorithm.SortUtil; 78UE?) X"  
kSUpEV+/  
/** igO,Ge8}  
* @author treeroot iXPe  
* @since 2006-2-2 ;r3Xh)k;  
* @version 1.0 |r<#>~*  
*/ vPce6 Cl*  
public class MergeSort implements SortUtil.Sort{ 3/s" ;Kg,  
~YQH]  
/* (non-Javadoc) 61pJVOe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +i@{h9"6g  
*/ GX#SCZ&}C  
public void sort(int[] data) { iOrpr,@  
int[] temp=new int[data.length]; xcM*D3  
mergeSort(data,temp,0,data.length-1); b^^ .$Gu  
} AD>X'J u8  
~\khwNA  
private void mergeSort(int[] data,int[] temp,int l,int r){ $2/v8  
int mid=(l+r)/2; $mu*iW\{  
if(l==r) return ; Ba#wW E  
mergeSort(data,temp,l,mid); nvbKW.[<f{  
mergeSort(data,temp,mid+1,r); )cV*cDL1j  
for(int i=l;i<=r;i++){ TjY-C m  
temp=data; 13aj fH  
} =berCV  
int i1=l; {?RVw`g&f  
int i2=mid+1; %U?1Gf e  
for(int cur=l;cur<=r;cur++){ <! Z06  
if(i1==mid+1) B&rw R/d  
data[cur]=temp[i2++]; jxqKPMf>@%  
else if(i2>r) 11YpC;[o  
data[cur]=temp[i1++]; d}^G790  
else if(temp[i1] data[cur]=temp[i1++]; h/pm$9A  
else %4,v2K  
data[cur]=temp[i2++]; GV0-"9uwX~  
} N%Uk/ c'  
} ]114\JE  
rsn^Y C  
} +x]3 - s  
Xrr3KQaK&  
改进后的归并排序: 0Zh]n;S3m  
u"gtv  
package org.rut.util.algorithm.support; 4A)@,t9+  
h>"j!|#!s  
import org.rut.util.algorithm.SortUtil; /i)>|U 4  
GyF  
/** 2(AuhZ>  
* @author treeroot G\(cnqHk  
* @since 2006-2-2 Xv<K>i>k  
* @version 1.0 ib-H jJ8  
*/ VT [TE  
public class ImprovedMergeSort implements SortUtil.Sort { H>]A|-rG#  
Seh(G  
private static final int THRESHOLD = 10; mqK}y K^P]  
YY4q99^K  
/* 8Z!Mad  
* (non-Javadoc) p(!d,YSE  
* Q 6n!u;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5m2f\^U  
*/ } 89-U  
public void sort(int[] data) { Zo< j"FG  
int[] temp=new int[data.length]; Ay0.D FL  
mergeSort(data,temp,0,data.length-1); ^X;p8uBo  
} [H@71+_Q  
TPVB{ 107  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5x"eM=  
int i, j, k; ckYT69U  
int mid = (l + r) / 2; E NrcIZ  
if (l == r) VWK%6Ye0  
return; ?$#P =VK  
if ((mid - l) >= THRESHOLD) d:pGdr& .  
mergeSort(data, temp, l, mid); m5v IS  
else $!$,cK Pl5  
insertSort(data, l, mid - l + 1); e}+Zj'5  
if ((r - mid) > THRESHOLD)  ]0XlI;ah  
mergeSort(data, temp, mid + 1, r); r+k g$+%b  
else jG{OLF6 !  
insertSort(data, mid + 1, r - mid); :(iBLO<x  
2ck0k,WP  
for (i = l; i <= mid; i++) { 20# V?hX3  
temp = data; 55FRPNx-x  
} SBI *[  
for (j = 1; j <= r - mid; j++) { x\oSD1t,  
temp[r - j + 1] = data[j + mid]; Zs4NN 2~  
} On|b-  
int a = temp[l]; oFGWI#]ts>  
int b = temp[r]; G6dUm_iB  
for (i = l, j = r, k = l; k <= r; k++) { qOy0QZ#0  
if (a < b) { oL~?^`cGZ  
data[k] = temp[i++]; XZ@ |(_Z  
a = temp; f] _'icP  
} else { Y]tbwOle  
data[k] = temp[j--]; KP&xk1 3)  
b = temp[j]; >}:  
} FGzKx9I9  
} mV^~  
} g^^pPV K_  
A"z9t#dv@  
/** 4xH/a1&p=  
* @param data *%Fu/  
* @param l _N=f&~T  
* @param i 6bPl(.(3  
*/ |Sm/s;&c6  
private void insertSort(int[] data, int start, int len) { )N*Jc @Y@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :yRv:`r3Lt  
} D*j^f7ab  
} skBD2V4  
} t cO{CI  
} k<5g  
XDHi4i47`o  
堆排序: i4]oE&G  
yRIXUCy  
package org.rut.util.algorithm.support; XMiu}w!  
Bhv$   
import org.rut.util.algorithm.SortUtil; Rw|'LaW  
S8Y\@C?5  
/** gq"d$Xh$x7  
* @author treeroot :.r_4$F:  
* @since 2006-2-2 /M+Du,  
* @version 1.0 !?v_.  
*/ 9?8PMh.  
public class HeapSort implements SortUtil.Sort{ Mc <u?H  
=#v? }JG  
/* (non-Javadoc) ![ sXR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *yaS^k\  
*/ zh|9\lf  
public void sort(int[] data) { DzQ  
MaxHeap h=new MaxHeap(); XbqMWQN*  
h.init(data); tc<uS%XT4^  
for(int i=0;i h.remove(); "VZXi_P  
System.arraycopy(h.queue,1,data,0,data.length); 4l+!Z,b  
} Pc_aEBq  
p[(I5p: L  
private static class MaxHeap{ _'LZf=V0  
! 5NuFLOf  
void init(int[] data){ =E5bM_P<K  
this.queue=new int[data.length+1]; i'7+ ?YL  
for(int i=0;i queue[++size]=data; 2ozh!8aL  
fixUp(size); Ps74SoD-  
} W*t] d  
} ;4[[T%&v  
fEX=csZ86  
private int size=0; l6y}>]  
z -!w/Bv@  
private int[] queue; 3f] ;y<Km  
^J5{quV  
public int get() { iN[x *A|h  
return queue[1]; !R"W2Z4h  
} $[A\i<#  
mAtqF %V  
public void remove() { DK\XC%~m  
SortUtil.swap(queue,1,size--); y=Kqv^  
fixDown(1); Z*i p=FYR  
} pA6KiY&  
file://fixdown Y @p<f5[c  
private void fixDown(int k) { MQQm3VaKS  
int j; mK[Z#obc=  
while ((j = k << 1) <= size) { m{/( 3  
if (j < size %26amp;%26amp; queue[j] j++;  ch8a  
if (queue[k]>queue[j]) file://不用交换 G{3 |d/;Bt  
break; G aV&y  
SortUtil.swap(queue,j,k); ;:fW]5"R  
k = j; S^eem_C  
} }/F$73Xd  
} n^Ca?|} ,  
private void fixUp(int k) { U X@%1W!8  
while (k > 1) { #wI}93E  
int j = k >> 1; D\AVZ76F1  
if (queue[j]>queue[k]) "XR=P> xk  
break; ;!MQ@Fi^  
SortUtil.swap(queue,j,k); _&uJE&xl}  
k = j; +;?mg(:  
} K*SgEkb'l  
} mGjB{Q+  
:A8}x=K  
} 5#,H&ui\  
*nCA6i  
} >fH0>W+!  
p~ b4TRvA6  
SortUtil: {^WK#$]  
<RY =y?%z  
package org.rut.util.algorithm; _MBhwNBxZ  
h2ROQKL"B  
import org.rut.util.algorithm.support.BubbleSort; Q":_\inF  
import org.rut.util.algorithm.support.HeapSort; R2,9%!iiX  
import org.rut.util.algorithm.support.ImprovedMergeSort; )`DVPudiy  
import org.rut.util.algorithm.support.ImprovedQuickSort; T/_u;My;  
import org.rut.util.algorithm.support.InsertSort; 7q ?ZieR  
import org.rut.util.algorithm.support.MergeSort; Vu:ZG*^  
import org.rut.util.algorithm.support.QuickSort; c/|{yp$Ga>  
import org.rut.util.algorithm.support.SelectionSort; x>yqEdR=o  
import org.rut.util.algorithm.support.ShellSort; g8<ODU0[g  
~#r>@C  
/** Qr.{_M  
* @author treeroot (Q*q# U  
* @since 2006-2-2 Ew/MSl6}  
* @version 1.0 y, l[v39  
*/ ;6G]~}>o  
public class SortUtil { #a e@VedM  
public final static int INSERT = 1; @t%da^-HS"  
public final static int BUBBLE = 2; /5NWV#-  
public final static int SELECTION = 3; \p4*Q}t  
public final static int SHELL = 4; Dvg'  
public final static int QUICK = 5; Kxsd@^E  
public final static int IMPROVED_QUICK = 6; T3wTMbZ!VK  
public final static int MERGE = 7; )Te\6qM  
public final static int IMPROVED_MERGE = 8; =XfvPBA  
public final static int HEAP = 9; 9xQ|Uad+%  
D!`[fjs6A  
public static void sort(int[] data) { E`)e ;^  
sort(data, IMPROVED_QUICK); Xf4QLw/r  
} +^AdD8U  
private static String[] name={ LIDi0jbrq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $u<;X^  
}; v;(cJ,l  
L4po1  
private static Sort[] impl=new Sort[]{ 8-;.Ejz!\A  
new InsertSort(), ;]LQ}^MP(  
new BubbleSort(), `wi+/^);  
new SelectionSort(), 6()Jx%  
new ShellSort(), zA#pgX[#  
new QuickSort(), D <iG*I  
new ImprovedQuickSort(), C. .|O  
new MergeSort(), Es[3Ppz  
new ImprovedMergeSort(), D1RQkAZS  
new HeapSort()  !XTzsN  
}; upMs yLp(  
> )4~,-;k  
public static String toString(int algorithm){ b'O/u."O  
return name[algorithm-1]; nAQ[ -NbW,  
} fHaF9o+/b  
#'/rFT4{v  
public static void sort(int[] data, int algorithm) { ,zjz "7'  
impl[algorithm-1].sort(data); ndQw>  
} p W[TufTa  
\(??Ytc<B  
public static interface Sort { 5%TSUU+<I  
public void sort(int[] data); (\qf>l+*  
} `C4(C4u  
gPn0-)<  
public static void swap(int[] data, int i, int j) { X}GX6qAdt  
int temp = data; >_Tyzl>z  
data = data[j]; 56Lxr{+X  
data[j] = temp; B}7j20:Z  
} xZ'C(~t  
} oyiG04H&  
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