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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。 j;Gtu  
插入排序: wu6;.xTLl  
8rGgF]F  
package org.rut.util.algorithm.support; g-k|>-h  
nAato\mM  
import org.rut.util.algorithm.SortUtil; j_[tu!~  
/** +E+p"7  
* @author treeroot ",t?8465y  
* @since 2006-2-2 **0~K";\  
* @version 1.0 sdrfsrNvB-  
*/ %0?KMRr  
public class InsertSort implements SortUtil.Sort{ xu%k~4cB,  
qZh/IW  
/* (non-Javadoc) aK~8B_5k8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8`{:MkXP  
*/ -ad{tJV|  
public void sort(int[] data) { :kV#y  
int temp; }#+^{P3;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Po0A#Zl  
} I,DS@SK  
} QL/(72K  
} rXq.DvQ  
cZ*@$%_  
} O\tb R=  
T Z@]:e:"b  
冒泡排序: 7z,C}-q  
G _tCmu\  
package org.rut.util.algorithm.support; `[yKFa I  
est9M*Fn  
import org.rut.util.algorithm.SortUtil; w.o@7|B1N  
W i.& e  
/** !|uWH  
* @author treeroot e>OoyDZ@R  
* @since 2006-2-2 UDFDJm$  
* @version 1.0 {Mk6T1Bkq  
*/ I 34>X`[o  
public class BubbleSort implements SortUtil.Sort{ G.B2('  
}>|s=uGW  
/* (non-Javadoc)  /maJtX'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2tO,dx  
*/ ?$pCsBDo  
public void sort(int[] data) { y Pp9\[+^j  
int temp; Ix}sK"}[n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e`s ~.ZF  
if(data[j] SortUtil.swap(data,j,j-1); >R_&Ouh:  
} G_JA-@i%  
} _LnpnL:  
} q i;1L Kc  
} (WJRi:NP?  
v1JzP#  
} ~ Iuf}D;  
djZqc5t  
选择排序: c6]U E@A  
0mVNQxHI  
package org.rut.util.algorithm.support; |r/"  |`  
V0YZp  
import org.rut.util.algorithm.SortUtil;  F(n$  
H?Wya.7  
/** gQuw1  
* @author treeroot J;e2&gB  
* @since 2006-2-2 C) s5D  
* @version 1.0 0+ '&`Q!u  
*/ 5tk AFb4P  
public class SelectionSort implements SortUtil.Sort { =qIp2c}Rx  
Zi i   
/* Q&;9 x?e  
* (non-Javadoc) ?V=ZIGj  
* (t|Zn@uY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w9imKVry  
*/ *^4"5X@  
public void sort(int[] data) { n>XdU%&  
int temp; <lPG=Xt  
for (int i = 0; i < data.length; i++) { JQI: sj  
int lowIndex = i; q;CiV  
for (int j = data.length - 1; j > i; j--) { A)!*]o>U  
if (data[j] < data[lowIndex]) { `h\j99  
lowIndex = j; J@'wf8Ub  
} "S]TP$O D  
} )&O %*@F  
SortUtil.swap(data,i,lowIndex); CRE3icXbQ  
} 'H!Uh]!  
} BU_nh+dF  
am'7uy!ka~  
} kzLsoZ!I  
X_h}J=33Q  
Shell排序: cT,sh~-x,  
bE..P&"  
package org.rut.util.algorithm.support; 4$<JHo @.  
{\5  
import org.rut.util.algorithm.SortUtil; ~ 7s!VR  
)10+@d  
/** # W']6'O  
* @author treeroot 0~S^Y1hH  
* @since 2006-2-2 \b x$i*  
* @version 1.0 *)Zdz9E'1(  
*/ f6Ah6tb  
public class ShellSort implements SortUtil.Sort{ CTa57R  
q} >%8;nm  
/* (non-Javadoc) O>,e~#!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t~XN}gMxw  
*/ pnOAs&QAm  
public void sort(int[] data) { oPM96 (  
for(int i=data.length/2;i>2;i/=2){ }Y\%RA  
for(int j=0;j insertSort(data,j,i); EQM {  
} T8g$uFo  
} /x$nje,.  
insertSort(data,0,1); =H8;iS2R  
} 6&x@.1('z  
7:1Lol-V  
/** c@7rqHU-0  
* @param data p5iuYHKk?  
* @param j &QgR*,5eo  
* @param i R m( "=(  
*/ } Kgy  
private void insertSort(int[] data, int start, int inc) { /8S>;5hvK@  
int temp; T~e.PP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y N-9[P8C  
} 1+s;FJ2}  
} g- gV2$I  
} "to;\9lP  
y6a3t G  
} 0H:X3y+  
(9a^$C*  
快速排序: 4Nsp<Kn>  
*EH~_F  
package org.rut.util.algorithm.support; 1qA;/-Zr<o  
{IjR^J=k  
import org.rut.util.algorithm.SortUtil; ]/v[8dS(l  
ygcm|PrS  
/** JZ x[W&]zT  
* @author treeroot upmx $H>  
* @since 2006-2-2 &D<yX~  
* @version 1.0 o]V^};B  
*/ F^:3?JA _  
public class QuickSort implements SortUtil.Sort{ 75lA%| *X  
gbA_DZ  
/* (non-Javadoc) B+`g> h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CU0YIL  
*/  ob]w;"  
public void sort(int[] data) { XCQs2CHt  
quickSort(data,0,data.length-1); yG{TH0tq  
} E1 2uZ$X  
private void quickSort(int[] data,int i,int j){ ih3n<gXF  
int pivotIndex=(i+j)/2; F== p<lrs  
file://swap XiWmV  ?  
SortUtil.swap(data,pivotIndex,j); K&-"d/QuLg  
!N^@4*  
int k=partition(data,i-1,j,data[j]); m&3xJuKih  
SortUtil.swap(data,k,j); 3v-~K)hl?  
if((k-i)>1) quickSort(data,i,k-1); Vurq t_nb  
if((j-k)>1) quickSort(data,k+1,j); %cn<ych G  
dZuOrTplA  
} tH4B:Bgj!  
/** #'`{Qv0,  
* @param data c:('W16  
* @param i n$R)>n Y  
* @param j 2=}FBA,2  
* @return [-w%/D%@  
*/ Hl=xW/%6y  
private int partition(int[] data, int l, int r,int pivot) { 2\$oV  
do{ BgT*icd8d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c71y'hnT  
SortUtil.swap(data,l,r); dE3) | %  
} | -H& o]  
while(l SortUtil.swap(data,l,r); Id9TG/H7  
return l; er\|i. Y  
} L~3Pm%{@A  
0jfuBj5!  
} |w=zOC;v  
['D]>Ot68  
改进后的快速排序: <_+X 88  
BA.uw_^4  
package org.rut.util.algorithm.support; XjBD{m(  
7_t'( /yu  
import org.rut.util.algorithm.SortUtil; zQ PQ  
#-J>NWdt  
/** fP1! )po  
* @author treeroot a+QpM*n7Lq  
* @since 2006-2-2 !,PWb3S  
* @version 1.0 j>kqz>3  
*/ '3;b@g,  
public class ImprovedQuickSort implements SortUtil.Sort { q^nVN#  
W,u:gzmhw  
private static int MAX_STACK_SIZE=4096; [Rb+q=z#  
private static int THRESHOLD=10; q3`u1S7Z7  
/* (non-Javadoc) %so]L+r2!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nk:)j:fr  
*/ hbn([+xY  
public void sort(int[] data) { \M-OC5fQv  
int[] stack=new int[MAX_STACK_SIZE]; O/LXdz0B  
2an f$^[  
int top=-1; <VE@DBWyl~  
int pivot; Q2> gU#  
int pivotIndex,l,r; : Dp0?&_  
F'Z,]b'st3  
stack[++top]=0; v@pky0  
stack[++top]=data.length-1; 5r0YA IJ  
lhJ'bYI  
while(top>0){ 30{ gI0jk  
int j=stack[top--]; p ll)Y  
int i=stack[top--]; $[|mGae  
*1"+%Z^  
pivotIndex=(i+j)/2; =~gvZV-<  
pivot=data[pivotIndex]; H?w6C):]  
Y/oHu@ _  
SortUtil.swap(data,pivotIndex,j); +C)~bb*  
i/.6>4tE:  
file://partition ~ri5zb20  
l=i-1; PY'2h4IL  
r=j; 2<6UwF  
do{ p7 ~!z.)o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !x)R=Z/C  
SortUtil.swap(data,l,r); #9s,# }  
} (k P9hcV  
while(l SortUtil.swap(data,l,r); (m$Y<{)2  
SortUtil.swap(data,l,j); +`15le`R  
*WZA9G#V5  
if((l-i)>THRESHOLD){ a9Vi];  
stack[++top]=i;  :11 A  
stack[++top]=l-1; r_d! ikOT(  
} SX#&5Ka/  
if((j-l)>THRESHOLD){ ^rz_f{c]-  
stack[++top]=l+1; L},_.$I?  
stack[++top]=j; :'ptuY  
} >mkFV@`  
jWgX_//!  
} H/Jbk*Q  
file://new InsertSort().sort(data); +|f@^-  
insertSort(data); YYS0`  
} O0:q;<>z  
/** |BYRe1l6l  
* @param data .Y|!:t|  
*/ $Kd>:f=A  
private void insertSort(int[] data) { 7$#u  
int temp; UZ";a453r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xx $cnG  
} +ai< q>+  
} 8,|kao:  
} I 6O  
b MBLXk  
} MOC/KNb  
YZ7.1`8  
归并排序: z!\*Y =e  
7Yy ;  
package org.rut.util.algorithm.support; /V By^L:  
ABkl%m6xf  
import org.rut.util.algorithm.SortUtil; "jCu6Rjd  
_ dg\\c  
/** <naz+QK'  
* @author treeroot [B3RfCV{  
* @since 2006-2-2 7:~_D7n  
* @version 1.0 q\)-BXw:  
*/ T{'RV0%   
public class MergeSort implements SortUtil.Sort{ Ca-j?bb!  
! P4*+')M  
/* (non-Javadoc) 2zpr~cB=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DwF hK*  
*/ @|!z9Y*  
public void sort(int[] data) { 4K74=r),i  
int[] temp=new int[data.length]; *ui</+  
mergeSort(data,temp,0,data.length-1); QL*IiFR  
} vSh`&w^*  
?ubro0F:  
private void mergeSort(int[] data,int[] temp,int l,int r){ $d4n"+7  
int mid=(l+r)/2; '>" 4  
if(l==r) return ; ^@]3R QB  
mergeSort(data,temp,l,mid); a{e4it  
mergeSort(data,temp,mid+1,r); \NC3'G:Ii  
for(int i=l;i<=r;i++){ (.,G=\!  
temp=data; N g,j#  
} }7X%'Bg=M  
int i1=l; E"0>yl)  
int i2=mid+1; >d6|^h'0  
for(int cur=l;cur<=r;cur++){ mc3"`+o  
if(i1==mid+1) 4+ig' |o  
data[cur]=temp[i2++]; I:.s_8mH}  
else if(i2>r) M3AXe]<eC1  
data[cur]=temp[i1++]; Pc9H0\+Xk  
else if(temp[i1] data[cur]=temp[i1++]; ] R*A  
else @PU [:;  
data[cur]=temp[i2++]; PW4q~rc=:  
} ntY]SK%Z  
} #;<Y[hR{P  
Js;h%  
} F}zDfY\-  
I_BJH'!t  
改进后的归并排序: ~s{$WL&  
svSVG:48  
package org.rut.util.algorithm.support; f 1d?.)  
E_`=7 i  
import org.rut.util.algorithm.SortUtil; @XVTU  
;G!q Y  
/** Ep}s}Stlr}  
* @author treeroot W8<%[-r  
* @since 2006-2-2 tVjsRnb{  
* @version 1.0 s@C}P  
*/ =Sv/IXX\di  
public class ImprovedMergeSort implements SortUtil.Sort { 1Z;iV<d  
ctUp=po  
private static final int THRESHOLD = 10; <QvOs@i*  
 @8 6f  
/* +v\oOBB)  
* (non-Javadoc) NO3/rJ6-  
* j#6.Gq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qb4z T  
*/ ;nGa.= "L  
public void sort(int[] data) { o}!PQ#`M  
int[] temp=new int[data.length]; ME dWLFf  
mergeSort(data,temp,0,data.length-1); ry!!9Z>9n  
} W4N{S.#!  
 XilS!,  
private void mergeSort(int[] data, int[] temp, int l, int r) { he4(hX^  
int i, j, k; CWlw0 X  
int mid = (l + r) / 2; M`>E|" <  
if (l == r) 1"g<0 W  
return; g5yJfRLxp  
if ((mid - l) >= THRESHOLD) Lv%x81]K  
mergeSort(data, temp, l, mid); 26nx`w?j(  
else $C\BcKlmv  
insertSort(data, l, mid - l + 1); :%.D78&  
if ((r - mid) > THRESHOLD) ?8$Q-1=  
mergeSort(data, temp, mid + 1, r); z@Y;r=v  
else oQ#8nu{k  
insertSort(data, mid + 1, r - mid); m2o0y++TjW  
]tD]Wx%  
for (i = l; i <= mid; i++) { v1[29t<I!  
temp = data; =fbWz  
} l\mPHA23  
for (j = 1; j <= r - mid; j++) { OY d !v`<  
temp[r - j + 1] = data[j + mid];  `]X>V,  
} +0~YP*I`/  
int a = temp[l]; vbNBLCwug  
int b = temp[r]; 2|L&DF:G  
for (i = l, j = r, k = l; k <= r; k++) { PdCEUh\>y  
if (a < b) { 9my^ Y9B  
data[k] = temp[i++]; q7!{?\T%  
a = temp; ] @'!lhLi  
} else { q@qsp&0/  
data[k] = temp[j--]; /ouPg=+Nl  
b = temp[j]; e!Hhs/&!T  
} _^;Z~/.  
} : 'c&,oLY  
} xmG<]WF>E  
{FG j]*  
/** yLGRi^d#  
* @param data N$DkX)Z  
* @param l *Uh!>Iv;  
* @param i d@^ZSy>L2  
*/ u"8yK5!  
private void insertSort(int[] data, int start, int len) { Q@niNDaW2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zTp"AuNHN  
} hc1N ~$3!G  
} `gJ(0#ac  
} SIllU  
} yr6V3],Tp  
"z c l|@  
堆排序: R=dC4;  
O=lzT~G|4  
package org.rut.util.algorithm.support; [ }:$yg  
nu^436MSOa  
import org.rut.util.algorithm.SortUtil; ]yu:i-SfP  
G6/m#  
/** >0gW4!7Y  
* @author treeroot pJ=#zsE0  
* @since 2006-2-2 ;*N5Y}?j'  
* @version 1.0 ),)lzN%!  
*/ <GJbmRc|  
public class HeapSort implements SortUtil.Sort{ m[$_7a5  
Bwrx*J  
/* (non-Javadoc) /{[o ~:'p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mR~&)QBP.  
*/ : +u]S2u{  
public void sort(int[] data) { %)|s1B'd  
MaxHeap h=new MaxHeap(); Fs{*XKv&lH  
h.init(data); omFz@  
for(int i=0;i h.remove(); @7u0v  
System.arraycopy(h.queue,1,data,0,data.length); N;R^h? '  
} LLI.8kn7  
[RL9>n8f  
private static class MaxHeap{ >sF)Bo Lc  
4 :v=pZ  
void init(int[] data){ 0a7Ppntb@  
this.queue=new int[data.length+1];  9!GM{  
for(int i=0;i queue[++size]=data; .VqhV  
fixUp(size); [?gP;,  
} vIvIfE  
} "N;EL0=  
YQ} o?Q$z  
private int size=0; . me;.,$#  
.X&9Q9T=#  
private int[] queue; ^pS~Z~[d/  
jo7\`#(Q  
public int get() { t:S+%u U  
return queue[1]; z{543~Og59  
} ni<(K 0~  
~,Qp^"rlW  
public void remove() { "~nZ G iK  
SortUtil.swap(queue,1,size--); Zfw,7am/  
fixDown(1); *Ly6`HZ9  
} [;N'=]`  
file://fixdown NlqImM=r,  
private void fixDown(int k) { >~f]_puT  
int j; d5b%  W3  
while ((j = k << 1) <= size) { N[hG8f  
if (j < size %26amp;%26amp; queue[j] j++; QP x^_jA  
if (queue[k]>queue[j]) file://不用交换 t-AmX) $  
break; rOYx b }1  
SortUtil.swap(queue,j,k); MA\V[32H  
k = j; ;"I^ZFYX  
} cNrg#Asen&  
} /QQ*8o8  
private void fixUp(int k) { Q59suL   
while (k > 1) { ?0.NIu,,o  
int j = k >> 1; +3gp%`c4  
if (queue[j]>queue[k]) =wJX 0A|  
break; @WhHUd4s  
SortUtil.swap(queue,j,k); =M1I>  
k = j; !Cs_F&l"j  
} qK+5NF|  
} Sdo-nt  
UG^q9 :t  
} l{9Y  
Wqnc{oq |$  
} x;S @bY  
S/ *E,))m  
SortUtil: +q4O D$}  
[^)g%|W  
package org.rut.util.algorithm; OI*H,Z "  
wkq 66?  
import org.rut.util.algorithm.support.BubbleSort; y-k.U%  
import org.rut.util.algorithm.support.HeapSort; [0of1eCSl  
import org.rut.util.algorithm.support.ImprovedMergeSort; v19-./H^ j  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4*L_)z&4;  
import org.rut.util.algorithm.support.InsertSort; @~e5<:|5#  
import org.rut.util.algorithm.support.MergeSort; -=="<0c  
import org.rut.util.algorithm.support.QuickSort; +vH4MwG$.&  
import org.rut.util.algorithm.support.SelectionSort; J,hCvm  
import org.rut.util.algorithm.support.ShellSort; mw!F{pw  
'91/md5  
/** 29rX%09T]  
* @author treeroot {ax:RUQxy  
* @since 2006-2-2 /z!%d%"  
* @version 1.0 }C:r 9? T  
*/ E./2jCwI(Y  
public class SortUtil { H|*m$| $,  
public final static int INSERT = 1; [ 3Gf2_  
public final static int BUBBLE = 2; \m,PA'nd/  
public final static int SELECTION = 3; LLo;\WGZ  
public final static int SHELL = 4; dG{A~Z z  
public final static int QUICK = 5;  g-A-kqo9  
public final static int IMPROVED_QUICK = 6; r$1Qf}J3=  
public final static int MERGE = 7; yevPHN"M  
public final static int IMPROVED_MERGE = 8; ;jXgAAz7  
public final static int HEAP = 9; *hx  
yfSmDPh  
public static void sort(int[] data) { hM{bavd  
sort(data, IMPROVED_QUICK); ` A>@]d  
} +TJCLZ..  
private static String[] name={ M{@(G5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zda 3 ,U2o  
}; UZMd~|  
uT{q9=w  
private static Sort[] impl=new Sort[]{ P?\6@_ Z  
new InsertSort(), @- xjfC\d  
new BubbleSort(), ]'}L 1r  
new SelectionSort(), )UR7i8]!0  
new ShellSort(), VRMXtQ*1Dm  
new QuickSort(), E.TAbD&5(  
new ImprovedQuickSort(), pb}*\/s  
new MergeSort(),  &HW9Jn  
new ImprovedMergeSort(), O?2DQY?jT  
new HeapSort() +nL[MSw  
}; ![1rzQvGDb  
WLT"ji0w2  
public static String toString(int algorithm){ Tx D#9]Q`  
return name[algorithm-1]; wz%-%39q%  
} qna8|3eP  
Y|n"dMrL  
public static void sort(int[] data, int algorithm) { =euni}7a  
impl[algorithm-1].sort(data); +rd+0 `}C  
} e= AKD#  
yAt ^;  
public static interface Sort { oxs#866x  
public void sort(int[] data); ? k/`  
}  @5FQX  
A&VG~r$  
public static void swap(int[] data, int i, int j) { KPF1cJ2N  
int temp = data; k:;r2f  
data = data[j]; \dVOwr  
data[j] = temp; v+XJ*N[W  
} (HVGlw'`  
} X8|,   
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