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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。 .6F3;bg R7  
插入排序: r(T/^<  
WN/#9]` P  
package org.rut.util.algorithm.support; N:[;E3?O  
5yiiPK$qr  
import org.rut.util.algorithm.SortUtil; PjW+V`  
/** C(HmLEB^  
* @author treeroot $ ].k6,%{p  
* @since 2006-2-2 MxEAs}MDv  
* @version 1.0 $2CGRhC  
*/ o=# [^Zv  
public class InsertSort implements SortUtil.Sort{ i!oj&&  
{/xs9.8:JX  
/* (non-Javadoc) )9*3^v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .^IhH|U  
*/ GR[>mkW!M  
public void sort(int[] data) { ~y H>Ko9F}  
int temp; xyjV dD\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e=z_+gVm  
} :U.)YHY  
} Qr%Jm{_o  
} h4\6h  
y*b.eO  
} Cm;qDvj+u  
V<V\0n!0  
冒泡排序: Rw\C0'  
lJzy)ne  
package org.rut.util.algorithm.support; $dp#nyP  
6_5d  
import org.rut.util.algorithm.SortUtil; k\#-6evT  
9N D+w6"  
/** `$sY^EX  
* @author treeroot -+=:+LhSMb  
* @since 2006-2-2 W _,;eyo  
* @version 1.0 _`Q It>R  
*/ l \^nC2  
public class BubbleSort implements SortUtil.Sort{ r%,H*DOu  
ff}a <w  
/* (non-Javadoc)  4SffP/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lcs{OW,  
*/ ^[,s_34V  
public void sort(int[] data) { d$_q=ywc  
int temp; >U~|R=*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4,U}Am1Q  
if(data[j] SortUtil.swap(data,j,j-1); H : T N  
} >GznG[Ku  
} hiMyFvA4  
} <P^hYj-swh  
} 80$0zbw$  
_+*/~E  
} JOdwv4(3V  
k?HrD"k"  
选择排序: M[K0t>ih  
fNqmTRu  
package org.rut.util.algorithm.support; O*rmD<L$  
^b"bRQqm  
import org.rut.util.algorithm.SortUtil; MxgLzt Y  
N2tkCkl^x9  
/** d=?Mj]  
* @author treeroot i$bzdc#s  
* @since 2006-2-2 9si}WqAw  
* @version 1.0 =a9etF%B  
*/ afY_9g!\  
public class SelectionSort implements SortUtil.Sort { 0F+ zG)G"  
B.YMP;7>  
/* z+k=|RMau  
* (non-Javadoc) $7UoL,N>  
* 3ximNQ} S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q sg/ V]  
*/ d@4rD}_Z  
public void sort(int[] data) { 7$ =Y\ P  
int temp; 4bi NGl~  
for (int i = 0; i < data.length; i++) { KZF0rW  
int lowIndex = i; fVDDYo2\  
for (int j = data.length - 1; j > i; j--) { Dn_"B0$lk  
if (data[j] < data[lowIndex]) { c~^CKgr~R9  
lowIndex = j; E.J 0fwyT  
} h(@R]GUX  
} .hX0c"f]b  
SortUtil.swap(data,i,lowIndex); ^kn ^CI6  
} GIm " )}W  
} p^1zIC>F  
g@~!kh,TH  
} UvxSMD:A  
e Om< !H  
Shell排序: OM.k?1%+M  
J7BFk ?=  
package org.rut.util.algorithm.support; M{?.hq  
w 66 v\x~  
import org.rut.util.algorithm.SortUtil; <S1??  
keLR1qf  
/** *Jvxs R'a1  
* @author treeroot $Y6I_U  
* @since 2006-2-2  nbI= r+  
* @version 1.0 }I]j&\  
*/ d^F|lc ]8  
public class ShellSort implements SortUtil.Sort{ Hm%g_Mt  
hv* >%p  
/* (non-Javadoc) g(/{.%\k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yu)q4C7ek  
*/  ep+  
public void sort(int[] data) { ]3*P:$Rq  
for(int i=data.length/2;i>2;i/=2){ 8|O=/m^]  
for(int j=0;j insertSort(data,j,i); ^=EjadVQ  
} 5|ic3  
} o`bo#A  
insertSort(data,0,1); xS'zZ%?  
} x# VyQ[ok  
A\K,_&x1Z  
/** %*lp< D  
* @param data '\`6ot8  
* @param j !(Krf  
* @param i g \Wj+el}  
*/ AoBoFZLl3  
private void insertSort(int[] data, int start, int inc) { JqEW= 5  
int temp; Bv $UFTz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mN;+TN'?{  
} W>B^S  
} aD9rp V  
} hd B |#t  
dpwD8Q< U  
} $I@GUtzjp  
8pXKO"u],  
快速排序: z{:-!oF&CB  
9R p2W  
package org.rut.util.algorithm.support; xCWz\-;  
$r\"6e  
import org.rut.util.algorithm.SortUtil; )6{< i5nJ\  
-v+&pG?m  
/** q-nER<  
* @author treeroot i9rS6<V'  
* @since 2006-2-2 !9;)N,  
* @version 1.0 !:WW  
*/ 8d!GZgC8R  
public class QuickSort implements SortUtil.Sort{ .2.qR,"j  
S]^`woD  
/* (non-Javadoc) {uU 2)5i2-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wv?RO*E  
*/ ;o0#(xVz  
public void sort(int[] data) { A%u_&a}  
quickSort(data,0,data.length-1); ?cKZ_c  
} *6Q|}b[qcD  
private void quickSort(int[] data,int i,int j){ <8!  Tq  
int pivotIndex=(i+j)/2; @PI%FV z~p  
file://swap v4rW2F:X  
SortUtil.swap(data,pivotIndex,j); 5G[x}4U  
$A2n{  
int k=partition(data,i-1,j,data[j]); d(-EcY>?  
SortUtil.swap(data,k,j); `zA#z />  
if((k-i)>1) quickSort(data,i,k-1); +bA%  
if((j-k)>1) quickSort(data,k+1,j); 0 Y>M=|  
*27*>W1  
} %Jp|z? [/  
/** F]EBD8/b  
* @param data Io  n~  
* @param i :>+\17tx  
* @param j /@"Y^  
* @return Dnw|%6Y  
*/ pTJX""C  
private int partition(int[] data, int l, int r,int pivot) { ",yc0 2<  
do{ t$J.+}}I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MSw$_d  
SortUtil.swap(data,l,r); %eg+F  
} M f~}/h  
while(l SortUtil.swap(data,l,r); aC%&U4OS  
return l; .iG&Lw\,  
} ^7^N}x@  
.uF[C{RnO  
} :o46rBs  
S >yLqPp  
改进后的快速排序: 1oiRWRe  
CyDV r  
package org.rut.util.algorithm.support; @-HG`c ct  
_oG&OJ@  
import org.rut.util.algorithm.SortUtil; piy`zc- yu  
gw36Ec<M  
/** h[o6-f<D  
* @author treeroot ,m_WR7!$E  
* @since 2006-2-2 8CbXMT  
* @version 1.0 2ZcKK8X;7  
*/ D^ Jk@<*  
public class ImprovedQuickSort implements SortUtil.Sort { {vEOn-(7  
A@hppaP!  
private static int MAX_STACK_SIZE=4096; lVOu)q@l7g  
private static int THRESHOLD=10; c;?fMX  
/* (non-Javadoc) i|`dWOVb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6;'dUGvH  
*/ #>lG7Ns|4  
public void sort(int[] data) { Lk\P7w{  
int[] stack=new int[MAX_STACK_SIZE]; 1u3, '8F  
;oZ)Wt  
int top=-1; js iSg/  
int pivot; M?m,EQh.  
int pivotIndex,l,r; R^?/' dr  
>zAUW[]C:I  
stack[++top]=0; Guz"wY  
stack[++top]=data.length-1; 1 zw*/dp  
f+8wl!M+6  
while(top>0){ X+UJzR90  
int j=stack[top--]; #(An6itl  
int i=stack[top--]; 4=<tWa|@9  
[8tL"G6s  
pivotIndex=(i+j)/2; hGpv2>M  
pivot=data[pivotIndex]; %_!bRo  
k0Ol*L!p  
SortUtil.swap(data,pivotIndex,j); zR2B- &]H  
.o) `m9/  
file://partition QQWadVQo  
l=i-1; pe^u$YE  
r=j; lOtDqb&  
do{ CHe>OreiS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ggJO:$?$L  
SortUtil.swap(data,l,r); 6I@h9uIsze  
} x)(|[  
while(l SortUtil.swap(data,l,r); BD(Z5+EU1  
SortUtil.swap(data,l,j);  }Y;K~J  
")d`dj\o  
if((l-i)>THRESHOLD){ ]]zPq<b2  
stack[++top]=i; FCnm1x#  
stack[++top]=l-1; M5 <@~V/[  
} 8- 2cRs  
if((j-l)>THRESHOLD){ '&\kxNglJ  
stack[++top]=l+1; Hy^N!rBxfO  
stack[++top]=j; rzt Ru  
} U&?v:&c#&n  
@3zg=?3  
} [eC2"&}  
file://new InsertSort().sort(data); )ubiB^g'm  
insertSort(data); Za 1QC;7  
} :Of^xj>A  
/** DQ r Y*nH  
* @param data =>_\fNy  
*/ oz,e/v8~  
private void insertSort(int[] data) { 1,% R;7J=g  
int temp; >k (C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k7T`bYv  
} 7eAX*Kgt<_  
} -4 SY=NC_  
} d8c=L8~jt  
t+!$[K0/  
} s+<Yg$)  
`Tv[DIVW  
归并排序: g\&g N  
=w{Z@S(ukz  
package org.rut.util.algorithm.support; 5fd]v<  
=,6z4" )  
import org.rut.util.algorithm.SortUtil; ^G}47(  
oU.R2\Q  
/** u)+8S/ )  
* @author treeroot ,Ge"anO  
* @since 2006-2-2 5Ou`z5S\k  
* @version 1.0 -#N.X_F  
*/ }E50>g  
public class MergeSort implements SortUtil.Sort{ [J?aD`{#O  
! t?iXZ  
/* (non-Javadoc) ]1#e#M]#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <^5Z:n!q  
*/ 9 a!$z!.  
public void sort(int[] data) { %[ Z \S0C  
int[] temp=new int[data.length]; d,B:kE0Y  
mergeSort(data,temp,0,data.length-1); Dv5D~on{  
} {tYZt4!{^  
*Doa* wQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ YUtC.TR1  
int mid=(l+r)/2; q_MG?re  
if(l==r) return ; kuszb~`zPY  
mergeSort(data,temp,l,mid); I 8`VNA&b  
mergeSort(data,temp,mid+1,r); >4TaP*_  
for(int i=l;i<=r;i++){ ux vqMgR  
temp=data; QI'Oz{vE  
} $5aV:Z3P  
int i1=l; \fz<.l]  
int i2=mid+1; &8Cu#^3  
for(int cur=l;cur<=r;cur++){ 1WxK#c-)  
if(i1==mid+1) v3~?;f,l  
data[cur]=temp[i2++]; chM%]|gey  
else if(i2>r) 1\ o59Y  
data[cur]=temp[i1++]; -*Xa3/kQ  
else if(temp[i1] data[cur]=temp[i1++]; r!_-"~`7E  
else 3no%E03p  
data[cur]=temp[i2++]; 7)`nD<j 5  
} gY/"cq  
} tkeoNuAM  
PUp6Q;AdQ  
} EE&K0<?T|:  
+" .X )avF  
改进后的归并排序: zy/@ WFPE  
#rMlI3;  
package org.rut.util.algorithm.support; f-vCm 5f  
naG=Pq<  
import org.rut.util.algorithm.SortUtil; LM~[@_j  
_|kxY '_[8  
/** 9-&Ttbb4)0  
* @author treeroot x kx^%3dV  
* @since 2006-2-2 g:g\>@Umo  
* @version 1.0 Ns>- o  
*/ P+@/O  
public class ImprovedMergeSort implements SortUtil.Sort { BKCA <  
)WNzWUfn=z  
private static final int THRESHOLD = 10; cOmw?kA*G  
2b}t,&bv?  
/* (-UYB9s  
* (non-Javadoc) |mxDjgq  
* MU@UfB|;u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n\Z!ff/  
*/ k+# %DK  
public void sort(int[] data) { H%qsjB^  
int[] temp=new int[data.length]; ^me-[ 5  
mergeSort(data,temp,0,data.length-1); :3v}kLO7|  
} ?8npG]L)  
pnl{&<$C%C  
private void mergeSort(int[] data, int[] temp, int l, int r) { {j.bC@hWw  
int i, j, k; orzZ{87  
int mid = (l + r) / 2; hci6P>h<ia  
if (l == r) x[FJgI'r  
return; nsu@h  
if ((mid - l) >= THRESHOLD) "%`1 ]Fr  
mergeSort(data, temp, l, mid); BRw .]&/  
else }MJy +Z8&  
insertSort(data, l, mid - l + 1); ,?J!  
if ((r - mid) > THRESHOLD)  U f:`  
mergeSort(data, temp, mid + 1, r); >{q]&}^U  
else J{.{f  
insertSort(data, mid + 1, r - mid); l5S aT,%  
0IsPIi"7  
for (i = l; i <= mid; i++) { wL+s8#{  
temp = data; ,;EIh}  
} LC,F <>w1  
for (j = 1; j <= r - mid; j++) { 8zZvht*  
temp[r - j + 1] = data[j + mid]; LA!?H]  
} [;n9:Qxf  
int a = temp[l]; [>jbhV'  
int b = temp[r]; .p<:II:6  
for (i = l, j = r, k = l; k <= r; k++) { Kfbb)?  
if (a < b) { NH[kNi'  
data[k] = temp[i++]; k$4y9{  
a = temp; `!ob GMTQ<  
} else { F~,Mw8  
data[k] = temp[j--]; ]0Y4U7W  
b = temp[j]; \o z#l'z  
} 0!4Ts3qn1  
} &W| [r(  
} J?*1*h  
Gw}%{=D9  
/** /j #n  
* @param data ux=w!y;}  
* @param l 8o3E0k1  
* @param i %"q9:{m  
*/ W,K;6TZhh  
private void insertSort(int[] data, int start, int len) { L ^r#o-H<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >@U*~Nz  
} qrb[-|ie&  
} rlMLW  
} QJZK|*  
} .N,bIQnj  
5VfyU8)7X  
堆排序: _('=b/  
BOX{]EOj  
package org.rut.util.algorithm.support; ~k"=4j9  
IB(6+n,6s  
import org.rut.util.algorithm.SortUtil; h){0rX@:&  
.UQzPnK  
/** 0CWvYC%e  
* @author treeroot uu-PJTNZ  
* @since 2006-2-2 {AhthR%(1  
* @version 1.0 ?fQ'^agq  
*/ &u]8IEv}u  
public class HeapSort implements SortUtil.Sort{ 3$jT*OyG#  
gt\E`HB8E  
/* (non-Javadoc) .r|tSfm6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ryl:a\  
*/ ?1*cO:O  
public void sort(int[] data) { K='z G*$l  
MaxHeap h=new MaxHeap(); S){)Z  
h.init(data); U#0Q)  
for(int i=0;i h.remove(); #%pI(,o=  
System.arraycopy(h.queue,1,data,0,data.length); y;4OY  
} _F4Ii-6  
fJ=0HNmX  
private static class MaxHeap{ v3*_9e  
%@<8<6&q  
void init(int[] data){ V)3KS-  
this.queue=new int[data.length+1]; c_dVWh e  
for(int i=0;i queue[++size]=data; %h hfU6[  
fixUp(size); w0[6t#$F  
} U2ohHJ``  
} C+* d8_L  
$r^GE  
private int size=0; [NF'oRRD9s  
5A,K6f@:g  
private int[] queue; L{#IT.  
bc7/V#W  
public int get() { G ?9"Y%  
return queue[1]; O24m;oHM  
} UgRhWV~f0  
@Y?#Sl*  
public void remove() { #?RU;1)Cw  
SortUtil.swap(queue,1,size--); .fn \]rUv  
fixDown(1); .nO\kgoK  
} <NHH^M\N  
file://fixdown W1WYej"  
private void fixDown(int k) { fPU`/6  
int j; 0!D4pvlt  
while ((j = k << 1) <= size) { oF vfCrd  
if (j < size %26amp;%26amp; queue[j] j++; y>S.?H:P  
if (queue[k]>queue[j]) file://不用交换 x" 7H5<  
break; W=ig.-  
SortUtil.swap(queue,j,k); Z3%}ajPu[  
k = j; bes<qy  
} r^2p*nr}  
} 'Oxy$U   
private void fixUp(int k) { )i6mzzj5  
while (k > 1) { f@6QvkIa  
int j = k >> 1; c& < Fr[AK  
if (queue[j]>queue[k]) Y h7rU?Gj  
break; C:GK,?!Jn'  
SortUtil.swap(queue,j,k); nz%DM<0$  
k = j; P i=+/}  
} GL&y@6  
} },uF 4M.K  
+u.1 ;qF  
} <<UB ^v m  
GeI-\F7b  
} CJtcn_.F  
'|ad_M  
SortUtil: {vs uPY  
85>05 ?  
package org.rut.util.algorithm; rUTcpGH  
XFg 9P}"  
import org.rut.util.algorithm.support.BubbleSort; oL-]3TY~  
import org.rut.util.algorithm.support.HeapSort; Y21g{$~Q{  
import org.rut.util.algorithm.support.ImprovedMergeSort; xg30x C[  
import org.rut.util.algorithm.support.ImprovedQuickSort; z__EYh  
import org.rut.util.algorithm.support.InsertSort; -N6f1>}pE  
import org.rut.util.algorithm.support.MergeSort; toLV4BtIG  
import org.rut.util.algorithm.support.QuickSort; &]V.S7LC #  
import org.rut.util.algorithm.support.SelectionSort; 5]~'_V  
import org.rut.util.algorithm.support.ShellSort; ^/uA?h:]\  
H-WJp<_  
/** N1Ng^aY0  
* @author treeroot -#7'r<I9@  
* @since 2006-2-2 09|K>UC)v  
* @version 1.0 j_/>A=OD  
*/ F7A=GF'  
public class SortUtil { ^pxX]G]  
public final static int INSERT = 1; tI]Q%S,  
public final static int BUBBLE = 2; ,%6P0#-  
public final static int SELECTION = 3; 'g6\CZw(#  
public final static int SHELL = 4; bNm#tmSt  
public final static int QUICK = 5; u$h 4lIl  
public final static int IMPROVED_QUICK = 6; C](f>)Dz /  
public final static int MERGE = 7; j1^I+j)  
public final static int IMPROVED_MERGE = 8; rTM}})81  
public final static int HEAP = 9; :=}BN  
? 8)'oMD  
public static void sort(int[] data) { Z.c'Hs+;  
sort(data, IMPROVED_QUICK); 6 rh5h:  
} yu;+o3WlK  
private static String[] name={ bG7O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2- &k^Gl!:  
}; ?iPC*  
"K  ~  
private static Sort[] impl=new Sort[]{ \O}E7 -  
new InsertSort(), bT\1>  
new BubbleSort(), ccB&O _  
new SelectionSort(), ydFD!mO  
new ShellSort(), L E&RY[  
new QuickSort(), ~:0sk"t$1  
new ImprovedQuickSort(), qUh2hz:  
new MergeSort(), R_(tjkT  
new ImprovedMergeSort(), 1=t>HQ  
new HeapSort() U [*FCD!~  
}; N< |@ymi  
4h~iPn'Wl  
public static String toString(int algorithm){ 5G::wuxk  
return name[algorithm-1]; 'GB. UKlR  
} s2teym,uG  
yQU_>_!n  
public static void sort(int[] data, int algorithm) { a,xycX:U  
impl[algorithm-1].sort(data); Mx&&0#;r  
} b$4"i XSQ  
$RYa6"`  
public static interface Sort { } uO);k5H  
public void sort(int[] data); q_TR q:&.  
} ,X#2\r<|  
7"aN#;&  
public static void swap(int[] data, int i, int j) { AB=daie  
int temp = data; #EO9UW5  
data = data[j]; <d,b'<z s  
data[j] = temp; U@g4w!$r  
} Q7*SE%H  
} b8~Bazk  
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