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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。 [)L)R`  
插入排序: D5gDVulsh  
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package org.rut.util.algorithm.support; d@IV@'Q7u  
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import org.rut.util.algorithm.SortUtil; i3v|r 0O~L  
/** <WCTJ!Z  
* @author treeroot 7'1 +i  
* @since 2006-2-2 jt,dr3|/n  
* @version 1.0 X\ bXat+  
*/ Uk@'[_1z  
public class InsertSort implements SortUtil.Sort{ }<KQ +  
F* h\#?  
/* (non-Javadoc) 9?L,DThQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Atnnx]n  
*/ NR|t~C+  
public void sort(int[] data) { O=2SDuBZ  
int temp; l %M0^d6M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h.WvPZ2U  
} Ka|, qkb  
} C<u<:4^H  
} ObIL  w  
w/UZ6fu  
} J_ y+.p- 5  
nBo?r}t4  
冒泡排序: Gr}lr gPS  
~4'AnoD1w  
package org.rut.util.algorithm.support; 0oiz V;B5%  
1p }:K`#{  
import org.rut.util.algorithm.SortUtil; 0kOl,%Ey  
=>en<#[\:  
/** Yp(F}<f?  
* @author treeroot d@aPhzLu  
* @since 2006-2-2 .|Y&,?k| Y  
* @version 1.0 7w?V0pLwn8  
*/ N`1W"Rx!  
public class BubbleSort implements SortUtil.Sort{ yhzZ[vw7k  
.lE7v -e  
/* (non-Javadoc) UD}#c:I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z:3SI$tO  
*/ Ptj[9R  
public void sort(int[] data) { /.>8e%)  
int temp; { M&Vh]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "2 "gTS  
if(data[j] SortUtil.swap(data,j,j-1); ;(I')[R "  
} ,UE>@;]  
} h qT6]*  
} RP|/rd]-k  
} \#O}K  
guc[du  
} \Jy/ a-  
}?KfL$@$  
选择排序: ]sL)[o  
K#_x.: <J  
package org.rut.util.algorithm.support; ecIZ +G)k  
& Y Y^Bd#  
import org.rut.util.algorithm.SortUtil; !wNj;ST*  
'wm :Xa  
/** M`u&-6  
* @author treeroot op5G}QZ  
* @since 2006-2-2 Tc.k0n%W:b  
* @version 1.0 BK;Gh0mp  
*/ {.mP e|  
public class SelectionSort implements SortUtil.Sort { Oll,;{<O  
TP R$oO2  
/* f:hsE  
* (non-Javadoc) wR]jJb F  
* ?CU6RC n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ww)p&don  
*/ yDe6f(D  
public void sort(int[] data) { pB0p?D)n  
int temp; O~~WP*N  
for (int i = 0; i < data.length; i++) { RF$2p4=[  
int lowIndex = i; |X6/Y@N  
for (int j = data.length - 1; j > i; j--) { vv0+F6 @  
if (data[j] < data[lowIndex]) { Nt'6Y;m!  
lowIndex = j; ,C97|6rC  
} Md[M}d8  
} |0N6]%r  
SortUtil.swap(data,i,lowIndex); MFzJ 8^.1R  
} b;k3B7<  
} R.'-jvO  
h}$g}f%$+  
} :)=>,XwL8  
R;l;;dC=  
Shell排序: l\t\DX"s_  
-'%>Fon  
package org.rut.util.algorithm.support; F)n^pT  
g:rjt1w`D  
import org.rut.util.algorithm.SortUtil; F :p9y_W  
=&~7Q"  
/** 9S_PZH  
* @author treeroot vOQ 3A%/  
* @since 2006-2-2 1=U NA :t<  
* @version 1.0 68 \73L=  
*/ hI>vz"J  
public class ShellSort implements SortUtil.Sort{ DElrY)3O.  
Q /zlU@  
/* (non-Javadoc) ;eY.4/*R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !> 2kH  
*/ E>I\m!ue  
public void sort(int[] data) { )Bw}T  
for(int i=data.length/2;i>2;i/=2){ rZ#ZY  
for(int j=0;j insertSort(data,j,i); J1UG},-h  
} 50jZu'z:  
} )Gm,%[?2C  
insertSort(data,0,1); $~c wB  
}  Qo$j'|lD  
 @ ^cR  
/** ?DrA@;IB  
* @param data =8V 9E  
* @param j \@!"7._=  
* @param i hH(w O\s  
*/ U]AJWC6  
private void insertSort(int[] data, int start, int inc) { .$"13"  
int temp; q"9 2][}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &,8F!)[9  
} h"3Mj*s  
} ;1AX u/  
} m- u0U  
H5!e/4iz  
} 1tIJ'#6  
4^(aG7  
快速排序: YG_|L[/#  
PK).)5sW  
package org.rut.util.algorithm.support; d+o.J",E  
C2}f'  
import org.rut.util.algorithm.SortUtil; 4H4ui&|7u6  
7z;X@+O}s  
/** E! GH$%:;  
* @author treeroot J~.`  
* @since 2006-2-2 v8l3{qq  
* @version 1.0 =JNCQu  
*/ LE}V{%)xD  
public class QuickSort implements SortUtil.Sort{ h<<uef9  
'4ip~>3?w  
/* (non-Javadoc) .L@gq/x)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %urd;h D  
*/ x:$ xtu  
public void sort(int[] data) { |R&cQKaQ`  
quickSort(data,0,data.length-1); !rsGCw!Pg  
} ?>s[B7wMp  
private void quickSort(int[] data,int i,int j){ SceK$  
int pivotIndex=(i+j)/2; b[KZJLZ)  
file://swap ,n3e8qd  
SortUtil.swap(data,pivotIndex,j); _J"fgxW  
aY-7K._</  
int k=partition(data,i-1,j,data[j]); 6o d^+>U  
SortUtil.swap(data,k,j); PC!g?6J  
if((k-i)>1) quickSort(data,i,k-1); ^D8~s;?  
if((j-k)>1) quickSort(data,k+1,j); aqEmF  
{/}%[cY =  
} ey@ccc*sZ9  
/** ]{| wU.  
* @param data |/;;uK,y  
* @param i p1N3AhXY  
* @param j bRD-[)  
* @return )uu(I5St  
*/ +L|x^ B3  
private int partition(int[] data, int l, int r,int pivot) { b/"gUYo  
do{ >@)p*y.K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $f?GD<}?7r  
SortUtil.swap(data,l,r); v>0I=ut  
} p""\uG'  
while(l SortUtil.swap(data,l,r); +"1fr  
return l; .XT]\'vW  
} -v! ;  
Ye S5%?Fk  
} s}F.D^^G  
1ixBwnp?  
改进后的快速排序: }qT{" *SC  
[vqf hpz  
package org.rut.util.algorithm.support; )G),iy  
JNv@MJb}  
import org.rut.util.algorithm.SortUtil; "`NAg  
GTM@9^  
/** 0`V;;w8  
* @author treeroot xz Hb+1+p  
* @since 2006-2-2 [/o B jiBA  
* @version 1.0 8]mRX~  
*/ B$M4f7  
public class ImprovedQuickSort implements SortUtil.Sort { 6UI6E)g  
A0,h 7<i  
private static int MAX_STACK_SIZE=4096; a<J< Oc!  
private static int THRESHOLD=10; ]nNn"_qh  
/* (non-Javadoc) 21O@yNpS$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V :/v r  
*/ I?RUVs  
public void sort(int[] data) { I? ="Er[g}  
int[] stack=new int[MAX_STACK_SIZE]; iG#9 2e4  
,FwpHs $A  
int top=-1; fV2w &:^3  
int pivot; }kG>6_p?  
int pivotIndex,l,r; Rl&nR$#  
tOX -vQ  
stack[++top]=0; ,xg-H6Xfa{  
stack[++top]=data.length-1; T|,/C|L  
.W\JvPTC  
while(top>0){ +%H=+fJ2}  
int j=stack[top--]; &NOCRabc  
int i=stack[top--]; @?>5~  
 W_6gV  
pivotIndex=(i+j)/2; %l,CJd5  
pivot=data[pivotIndex]; 7K ~)7U  
pk`5RDBu  
SortUtil.swap(data,pivotIndex,j); zm8k,e +5-  
;d<O/y,:4  
file://partition 5=\^DeM@ H  
l=i-1; KZO[>qC"R  
r=j; eLLOE)x  
do{ ;l^'g}dQ^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :}2Tof2  
SortUtil.swap(data,l,r); hBaF^AWW  
} +koW3>  
while(l SortUtil.swap(data,l,r); Lr 9E02  
SortUtil.swap(data,l,j); k<x7\T  
1B gHkDW  
if((l-i)>THRESHOLD){ 3?D{iMRM  
stack[++top]=i; m&yHtnt  
stack[++top]=l-1; F"cZ$TL]  
} 3xN_z?Rg  
if((j-l)>THRESHOLD){ gF`hlYD  
stack[++top]=l+1; Xvk+1:D  
stack[++top]=j; $&!|G-0'  
} <*+[E!oi  
U o aWI2  
} -g:i'e  
file://new InsertSort().sort(data); D<:zw/IRE  
insertSort(data); K:A:3~I!NW  
} 9kwiG7V1  
/** Nv|0Z'M  
* @param data f|ERZN`uB  
*/ \GV'{W+o2  
private void insertSort(int[] data) { ;O|u`fAqT  
int temp; Rn`DUYg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9R">l5u  
} 4 L 5$=V  
} &O#1*y Z  
} RP^vx`9h  
QyY<Zi;6  
} sgnc$x"  
@^J>. g  
归并排序: sy-#Eo#3  
)c?nh3D  
package org.rut.util.algorithm.support; 4;@L#Pzt  
Z +O< IF%  
import org.rut.util.algorithm.SortUtil; <EdNF&S-  
w+Gav4  
/** 2R ^6L@fw  
* @author treeroot _0ZU I^#  
* @since 2006-2-2 k)[c!\a[i  
* @version 1.0 R<vbhB/lU  
*/ GHo mk##0E  
public class MergeSort implements SortUtil.Sort{ u/NcX  
I-=Ieq"R9  
/* (non-Javadoc) _k;HhLj`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2G<XA  
*/ Sn^M[}we  
public void sort(int[] data) { t BG 9Mn  
int[] temp=new int[data.length]; ;JMmr-@  
mergeSort(data,temp,0,data.length-1); cnRgzj<ek  
} bvHQ# :}H  
bR1Q77<G\  
private void mergeSort(int[] data,int[] temp,int l,int r){ yY*(!^S  
int mid=(l+r)/2; Z$r7Hi  
if(l==r) return ; ur7S K(#  
mergeSort(data,temp,l,mid); (Q&O'ng1  
mergeSort(data,temp,mid+1,r); @6%7X7m  
for(int i=l;i<=r;i++){ }$sTnea  
temp=data; Ck>]+rl  
} #3{{[i(;i  
int i1=l; vT @25  
int i2=mid+1; W`P>vK@=  
for(int cur=l;cur<=r;cur++){ :."6g)T  
if(i1==mid+1) I[?bM-  
data[cur]=temp[i2++]; sl(go^  
else if(i2>r) yhI;FNSf  
data[cur]=temp[i1++]; ]rNxvFN*j  
else if(temp[i1] data[cur]=temp[i1++]; lgD %  
else g>#}(u!PH  
data[cur]=temp[i2++]; | +uc;[`  
} th<>%e}5c  
} Oqt{ uTI~  
d(@ ov^e-  
} yW\kmv.O  
Ra6}<o  
改进后的归并排序: rZ)7(0BBs  
)D)4=LJ  
package org.rut.util.algorithm.support; {t.S_|IE  
(uy\~Zb  
import org.rut.util.algorithm.SortUtil; &Nw|(z&$  
bE@Eiac  
/** .TDg`O24c,  
* @author treeroot Sqyju3Yp  
* @since 2006-2-2 Eau V  
* @version 1.0 +?[s"(  
*/ )>^Ge9d]  
public class ImprovedMergeSort implements SortUtil.Sort { ]"htOO  
\ rg;xZa5  
private static final int THRESHOLD = 10; ?<5KLvGv  
QAMcI:5  
/* :XoR~syT  
* (non-Javadoc) IS`ADDU[S  
* baL<|& c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =P_ *.SgR  
*/ Sfp-ns32%A  
public void sort(int[] data) { y+V>,W)r7  
int[] temp=new int[data.length]; cM4{ e^  
mergeSort(data,temp,0,data.length-1); #yU"n-eLR  
} %o0H#7'  
${}9/(x/^  
private void mergeSort(int[] data, int[] temp, int l, int r) { qn,fx6v4  
int i, j, k; +x/vZXtOK  
int mid = (l + r) / 2; }R YPr  
if (l == r) -}( o+!nl  
return; DRTT3;,N  
if ((mid - l) >= THRESHOLD) TZ3gJ6 Cb  
mergeSort(data, temp, l, mid); T|j=,2_  
else Pj_DI)^  
insertSort(data, l, mid - l + 1); MZh?MaBz06  
if ((r - mid) > THRESHOLD) \:'6_K  
mergeSort(data, temp, mid + 1, r); I)0_0JXs  
else L/%{,7l<^?  
insertSort(data, mid + 1, r - mid); Y=O-^fL  
1CM 8P3  
for (i = l; i <= mid; i++) { )q\6pO@  
temp = data; KoWG:~>|  
} #`l&HV   
for (j = 1; j <= r - mid; j++) { I3izLi  
temp[r - j + 1] = data[j + mid]; x9 n(3Oa  
} - DYH>!  
int a = temp[l]; vQy<%[QO  
int b = temp[r]; }w2Et  
for (i = l, j = r, k = l; k <= r; k++) { D0MW~Y6{  
if (a < b) { 3H4T*&9;n  
data[k] = temp[i++]; >IA1 \?(  
a = temp; @+)T"5_Y[  
} else { ]1|7V|N6  
data[k] = temp[j--]; \q24E3zS&  
b = temp[j]; tK'9%yA\  
} qSD3]Dv"  
} )7Qp9Fxo  
} /11CC \  
q|IU+r:! 3  
/** (?lT @RY/  
* @param data yJlRW!@&:  
* @param l R yM2 9uD  
* @param i IjQgmS~G  
*/ FL&Y/5  
private void insertSort(int[] data, int start, int len) { !x||ObW\H  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )nK+`{;@!  
} 1=!2|D:C)i  
} !YlEXaS  
} * kUb[  
} 5lM 3In@  
d-W*`:Q  
堆排序: TIaiJvo  
n!lE|if  
package org.rut.util.algorithm.support; [9Tnp]q  
"T<7j.P?  
import org.rut.util.algorithm.SortUtil; 5LU7}v~/  
sqjDh  
/** huR ^l  
* @author treeroot q./jYe  
* @since 2006-2-2 KZaiy*>)  
* @version 1.0 [ :Sl~  
*/ P=9UK`n  
public class HeapSort implements SortUtil.Sort{ &zVXd  
IlI5xkJ(  
/* (non-Javadoc) Mii&doU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9y} J|z  
*/ > %Hw008  
public void sort(int[] data) { 6x/o j`_[  
MaxHeap h=new MaxHeap(); V>UlL&V  
h.init(data); MU:v& sk  
for(int i=0;i h.remove(); h gwS_L  
System.arraycopy(h.queue,1,data,0,data.length); HW'I$ .  
} ' dv(  
s.KfMJ"u[  
private static class MaxHeap{ vkM_a}%<  
$"}*#<Z  
void init(int[] data){ IF<T{/MA  
this.queue=new int[data.length+1]; |%3>i"Y@AK  
for(int i=0;i queue[++size]=data; 4$ah~E>,t  
fixUp(size); LfCgvq6/pO  
} 1-.i^Hal  
} 7qWa>fX  
/#L4ec-'  
private int size=0; - ku8n%u  
yZNg[KH  
private int[] queue; o"A?Aq  
Fta=yH }  
public int get() { o>m*e7l,  
return queue[1]; U9 Q[K`  
} *7#5pT~  
&XXr5ne~C  
public void remove() { L&]{GNw  
SortUtil.swap(queue,1,size--); Imyw-8/;  
fixDown(1); 8|+@A1)&4  
} LA(/UA3Izd  
file://fixdown kK0zb{  
private void fixDown(int k) { 9'|_1Q.b^  
int j; J%!vhQ  
while ((j = k << 1) <= size) { 9J<vkxG9`  
if (j < size %26amp;%26amp; queue[j] j++; IEI&PRD  
if (queue[k]>queue[j]) file://不用交换 1$:O9 {F  
break; <Skf n`).  
SortUtil.swap(queue,j,k); xf|C{XV@H  
k = j; u%OLXb  
} #H5 +8W  
} 77]lp mC  
private void fixUp(int k) { tZ*>S]qD  
while (k > 1) { lACS^(  
int j = k >> 1; kn`O3cW/  
if (queue[j]>queue[k]) #&z'?x^a  
break; $`lGPi(Jc  
SortUtil.swap(queue,j,k); UjyrmQf  
k = j; 9PaV*S(\TR  
} , 0?_? GO  
} ]IDhE{  
V~Jt  
} Tq6\oIBkV  
e#WASHZN  
} OL@$RTh  
{"rL3Lk  
SortUtil: [8 23w.{]#  
6J cXhlB`  
package org.rut.util.algorithm; wX!0KxR/Z  
SWT)M1O2  
import org.rut.util.algorithm.support.BubbleSort; \vpX6!T  
import org.rut.util.algorithm.support.HeapSort; *h pS/g/3\  
import org.rut.util.algorithm.support.ImprovedMergeSort; R(f%*S4  
import org.rut.util.algorithm.support.ImprovedQuickSort; ndk~(ex|j  
import org.rut.util.algorithm.support.InsertSort; wawJZ+V  
import org.rut.util.algorithm.support.MergeSort; lt\Bm<"z!1  
import org.rut.util.algorithm.support.QuickSort; &F'n >QT9q  
import org.rut.util.algorithm.support.SelectionSort; M`)3(|4  
import org.rut.util.algorithm.support.ShellSort; B@' OUcUR  
[3x*47o"z  
/** 20:![/7:!  
* @author treeroot <" 0b 8 Z  
* @since 2006-2-2 P#rS.CIh  
* @version 1.0 X'xnJtk  
*/ QVl"l'e8  
public class SortUtil { _!?a9  
public final static int INSERT = 1; iWkC: fQz  
public final static int BUBBLE = 2; N7)K\)DS!z  
public final static int SELECTION = 3; 1DH P5q  
public final static int SHELL = 4; sy6[%8D$  
public final static int QUICK = 5; 2cZgG^  
public final static int IMPROVED_QUICK = 6; ajf(Ii\/  
public final static int MERGE = 7; Pv*]AF;9pQ  
public final static int IMPROVED_MERGE = 8; z 1.vnGP  
public final static int HEAP = 9; :1v.Jk  
A3J=,aRI_v  
public static void sort(int[] data) { )vY)Mg  
sort(data, IMPROVED_QUICK);  / w[Tu  
} yEkwdx5!(  
private static String[] name={ {GGP8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A yOy&]g  
}; _Y)Wi[  
=t.T9'{  
private static Sort[] impl=new Sort[]{ Xs~IoU  
new InsertSort(), }yd!UU  
new BubbleSort(), 1`~.!yd8(  
new SelectionSort(), J M;WCV%NM  
new ShellSort(), F^?DnZs  
new QuickSort(), E7I$GD  
new ImprovedQuickSort(), IUD@Kf]S  
new MergeSort(), Bt(nm> Ng  
new ImprovedMergeSort(), Sb}=j;F  
new HeapSort() Kv ajk~  
}; \Y6r !D9  
6yC4rX!a  
public static String toString(int algorithm){ \]3[Xw-$  
return name[algorithm-1];  LYyud  
} &fE2zTz  
EQ>@K-R  
public static void sort(int[] data, int algorithm) { +.-mqtM  
impl[algorithm-1].sort(data); ]UGk"s5A  
} h1$75E?,  
h" f_T [  
public static interface Sort { , hp8b$  
public void sort(int[] data); l4U  
} c/l^;6O/!\  
\4O_@d`A  
public static void swap(int[] data, int i, int j) { C>QWV[F  
int temp = data; `(E$-m-~jH  
data = data[j]; bzECNi5^  
data[j] = temp; =}Yz[-I  
} O<MO2U+^x  
} Y<_;8%S  
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