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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。 HobGl0<y  
插入排序: G<">/_jn  
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package org.rut.util.algorithm.support; <eud#v  
Y5h)l<P>B  
import org.rut.util.algorithm.SortUtil; =FtM;(\  
/** F- !}dzO  
* @author treeroot *7xQp!w^  
* @since 2006-2-2 )9A<fwpN  
* @version 1.0 fw(j6:p  
*/ MYDf`0{$_a  
public class InsertSort implements SortUtil.Sort{ jt'Y(u]2  
S+_A <p  
/* (non-Javadoc) 0] :*v?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O)$N}V0  
*/ WQIM2_=M  
public void sort(int[] data) { GDo)6du  
int temp; c"%_]7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &dZ.+#8r  
} y]E)2:B[d  
} 7)8rc(58  
} np'M4^E;  
{jx#^n&5R  
} ;H m-,W  
0btmao-  
冒泡排序: T0*TTB&b  
 bbQ 10H  
package org.rut.util.algorithm.support; 8M3p\}O  
xvdnEaWe$  
import org.rut.util.algorithm.SortUtil; IxEQh)J X  
k"DQbUy0L  
/** $X.'W\o|  
* @author treeroot (zM+7tJH  
* @since 2006-2-2  hZss  
* @version 1.0 G +nY}c  
*/ vZ_DG}n11  
public class BubbleSort implements SortUtil.Sort{ W)$|Hm:H  
5x1%oC  
/* (non-Javadoc) 5Re`D|8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R uFu,H-  
*/ v:J.d5  
public void sort(int[] data) { eBYaq!t k  
int temp; ^)C$8:@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 654jS!  
if(data[j] SortUtil.swap(data,j,j-1); ; K)?:  
} `3>)BV<P  
} L!+[]tB  
} =B o4yN  
} P60]ps!M  
e $/Zb`k  
} qN`]*baS  
2\z`G  
选择排序: B!E<uVC  
0o"<^] _|  
package org.rut.util.algorithm.support; PTI'N%W  
vU \w3  
import org.rut.util.algorithm.SortUtil; gKm~cjCB`~  
e u=f-HW]  
/** 0\_R|i_`>  
* @author treeroot ]Gd]KP@S  
* @since 2006-2-2 }07<(,0n  
* @version 1.0 +poIgjq0  
*/ *{;A\sL  
public class SelectionSort implements SortUtil.Sort { t#D\*:Xi  
%. 6?\w1e  
/* g6a3MJV`  
* (non-Javadoc) RfKxwo|M<  
* Bu >yRL=*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'bY|$\I  
*/ <8z[,X}bM  
public void sort(int[] data) { =|{,5="  
int temp; w3?t})PB&  
for (int i = 0; i < data.length; i++) { B'BbTI,  
int lowIndex = i; }&C!^v o  
for (int j = data.length - 1; j > i; j--) { HU'`kimWb  
if (data[j] < data[lowIndex]) { 1^H<+0  
lowIndex = j; ^)0{42!]  
} {</$ObK  
} KJvJUq  
SortUtil.swap(data,i,lowIndex); -I$txa/"|  
} x_H7=\pX]  
} PEQvEruZ}  
-m x3^  
} n5,Pq+[  
8Jy1=R*S  
Shell排序: \%4+mgiD  
y3o4%K8  
package org.rut.util.algorithm.support; M3ZJt'|  
?=@Q12R)X  
import org.rut.util.algorithm.SortUtil; H R!>g  
j>Bk; f|  
/** Y ,pS/  
* @author treeroot Mb/6>  
* @since 2006-2-2 , LPFb6o  
* @version 1.0 zH\;pmWiN9  
*/ Xde=}9  
public class ShellSort implements SortUtil.Sort{ r;6YCI=z  
JpHsQ8<  
/* (non-Javadoc) j BQqpFH9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /qQ2@k  
*/ ]#7Y @Yo  
public void sort(int[] data) { MPEBinE?  
for(int i=data.length/2;i>2;i/=2){ Nxs%~ wZ   
for(int j=0;j insertSort(data,j,i); Xi`U`7?D(=  
} [@FeRIu8  
} 1oW]O@R  
insertSort(data,0,1); uA}FuOE6  
} d<cbp [3F  
Exs _LN  
/** [\M?8R$)  
* @param data ! {o+B^^  
* @param j AFhG{G'W  
* @param i ` Ehgn?6'  
*/ 8/kO9'.P  
private void insertSort(int[] data, int start, int inc) { b yreleWo  
int temp; o  >4>7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U+A(.+d.  
} [6gHi.`p'  
} @/2wmza%2  
} ^l2d?v8  
c"&!=@  
} i.dAL)V  
P;91C'T-x  
快速排序: ]}Hv,a   
>`V|`Zi ?  
package org.rut.util.algorithm.support; A kQFb2|ir  
?}Ptb&Vk(  
import org.rut.util.algorithm.SortUtil; o?hw2-mH  
VKfHN_m*  
/** \C\y' H5  
* @author treeroot A)a+LW'=u  
* @since 2006-2-2 4Jy,IKPp  
* @version 1.0 j<-o{6r  
*/ "N:]d*A\  
public class QuickSort implements SortUtil.Sort{ V'hz1roe  
!<^j!'2  
/* (non-Javadoc) @ DKl<F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pO+wJ|f  
*/ jJQfCOD$  
public void sort(int[] data) { p~;z"Z  
quickSort(data,0,data.length-1); (2\ekct ^  
} (>lqp%G~  
private void quickSort(int[] data,int i,int j){ ej53O/hP  
int pivotIndex=(i+j)/2; .0;k|&eBD  
file://swap cZF;f{t  
SortUtil.swap(data,pivotIndex,j); v&,VC~RN-J  
]T$w7puaJ  
int k=partition(data,i-1,j,data[j]); QMpA~x_m  
SortUtil.swap(data,k,j); (eIxU&o'  
if((k-i)>1) quickSort(data,i,k-1); DmA!+  
if((j-k)>1) quickSort(data,k+1,j); "1TM  
qvE[_1QCc  
} ['`'&+x&!  
/** ;Wm)e~`,  
* @param data ` Z V'7|  
* @param i U5%]nT"[]  
* @param j t"Rf67  
* @return 5{f/H] P  
*/ zw:b7B]  
private int partition(int[] data, int l, int r,int pivot) { zYJ`.,#C 5  
do{ a9JJuSRC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Vk=<,<BB  
SortUtil.swap(data,l,r); Vx8.FNJh  
} }nERQq&A  
while(l SortUtil.swap(data,l,r); XzFqQ- H  
return l; @?AE75E{  
} *jSc&{s~  
s/|'1E\F  
} %ycT}Lu  
s"!}=k X  
改进后的快速排序: (:k`wh&  
]-OkW.8d1  
package org.rut.util.algorithm.support; =U|SK"oO  
cDol o1*  
import org.rut.util.algorithm.SortUtil; |L-juT X9  
 xyCcd=  
/** l zkn B  
* @author treeroot 3nGK674;z  
* @since 2006-2-2 -mdPqVIJn:  
* @version 1.0 `erQp0fBM  
*/ Ekp 0.c8:  
public class ImprovedQuickSort implements SortUtil.Sort { 4nXS9RiF2  
UsKn4Kh  
private static int MAX_STACK_SIZE=4096; pODo[Rkq  
private static int THRESHOLD=10; {%}6 d~Bg  
/* (non-Javadoc) ~OfKn1D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wWswuhq<  
*/ O@&I.d$  
public void sort(int[] data) { tELnq#<6  
int[] stack=new int[MAX_STACK_SIZE]; 56aJE .?<  
".Z+bi2l  
int top=-1; =v"{EmT[$  
int pivot; u3!!_~6,z  
int pivotIndex,l,r; G?(:Z=  
y`Y}P1y*  
stack[++top]=0; 0 1w/,r  
stack[++top]=data.length-1; $l"(tB7d  
0tyU%z{RV  
while(top>0){ Li$k<AM  
int j=stack[top--]; 'v)+S;oB  
int i=stack[top--]; gvt4'kp  
0kEq|k9  
pivotIndex=(i+j)/2; skArocs  
pivot=data[pivotIndex]; RtEkd_2  
l'R`XGT  
SortUtil.swap(data,pivotIndex,j); IMEoov-x  
+T;qvx6  
file://partition }Ec"&  
l=i-1; lK@r?w|<M  
r=j; '*.};t~;"d  
do{ c(JO;=,@9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SX8%F:<.  
SortUtil.swap(data,l,r); M" \y2   
} n-WvIy  
while(l SortUtil.swap(data,l,r); +g30frg+Gl  
SortUtil.swap(data,l,j); 5lY9  
KwyXM9h6=  
if((l-i)>THRESHOLD){ M,lu)~H  
stack[++top]=i; y5 +&P  
stack[++top]=l-1; -v&srd^  
} Dn! V)T  
if((j-l)>THRESHOLD){ Fm{y.URo  
stack[++top]=l+1; Etk<`GRfA  
stack[++top]=j; pswppC6f  
} w| # 79,&  
9 f+7vCA  
} S)h1e%f, f  
file://new InsertSort().sort(data); ?os0JQVB  
insertSort(data); EaL+}/q&  
} 1Qkuxw  
/** 3g?T,| 2K  
* @param data Q5ao2-\   
*/ 4 .qjTR  
private void insertSort(int[] data) { VW/1[?HG5  
int temp; >X,6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IHfqW?  
} % M:"Ai5:  
} JJO"\^,;~  
} G_RK3E[FK  
{QJ`.6Kt  
} Su^Z{ Ud`  
3e:y?hpeL  
归并排序: i[ lH@fJm_  
O%{>Zo_<  
package org.rut.util.algorithm.support; ],m-,K  
}zi6F.  
import org.rut.util.algorithm.SortUtil; ~yg9ZM  
u[@*}|uXM  
/** \:S8mDI^s  
* @author treeroot ?Ci\3)u,P  
* @since 2006-2-2 z@}~2K  
* @version 1.0 xCD+qP ^  
*/ kE}I b4]J  
public class MergeSort implements SortUtil.Sort{ Bf'(JJ7&N  
/xnhHwJm  
/* (non-Javadoc) 7Q&P4{hi0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #/6X44 *u  
*/ <Do89  
public void sort(int[] data) { >~ :]+q  
int[] temp=new int[data.length]; 6w#v,RDEu  
mergeSort(data,temp,0,data.length-1); e V#H"fM  
} c{0?gt.  
Q=E6ZxH5;  
private void mergeSort(int[] data,int[] temp,int l,int r){ CJ>=odK[  
int mid=(l+r)/2; mbK$Wp#  
if(l==r) return ; %G*D0pE  
mergeSort(data,temp,l,mid); 3]Mx,u  
mergeSort(data,temp,mid+1,r); zjS<e XLs[  
for(int i=l;i<=r;i++){ EWi@1PAZK  
temp=data; :yeTzIz]  
} ?T&D@Ohsx  
int i1=l; nNr3'6lz  
int i2=mid+1; BH1To&ol  
for(int cur=l;cur<=r;cur++){ aJ ts  
if(i1==mid+1) >#Y q&@G  
data[cur]=temp[i2++]; )sr]}S0  
else if(i2>r)  Qy%/+9L  
data[cur]=temp[i1++]; =v}.sJ V?  
else if(temp[i1] data[cur]=temp[i1++]; Lj#6K@u@Z  
else 'S\H% -  
data[cur]=temp[i2++]; 'lF|F+8   
} EOiKwhrV  
} 3h>Ji1vV  
/WMLr5  
} +( d2hSIF  
Phczf  
改进后的归并排序: wKN9HT  
1*"Uc!7.%  
package org.rut.util.algorithm.support; {_JLmyaerZ  
&+sN= J.x  
import org.rut.util.algorithm.SortUtil; &W%TY:Da|  
_nt%&f  
/** cW2:D$Pe  
* @author treeroot h=aHZ6v  
* @since 2006-2-2 d>}%A ]  
* @version 1.0 8MdKH7  
*/ c}lgWu~  
public class ImprovedMergeSort implements SortUtil.Sort { >X]<s^  
~tWBCq 6  
private static final int THRESHOLD = 10; pJI H_H  
@ NF8?>!  
/* KRQ/wuv  
* (non-Javadoc) |cacMgly  
* YY9q'x,w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0WFZx Ad"  
*/ d0,I] "  
public void sort(int[] data) { "v06F j>q  
int[] temp=new int[data.length]; S70ERRk  
mergeSort(data,temp,0,data.length-1); BsAglem  
} l40$}!!<  
xFJ>s-g*  
private void mergeSort(int[] data, int[] temp, int l, int r) { J';tpr  
int i, j, k; >Y:ouN~<  
int mid = (l + r) / 2; 8CL05:&  
if (l == r) 9D@Ez"xv  
return; C<pF13*4  
if ((mid - l) >= THRESHOLD) w?[)nlNW  
mergeSort(data, temp, l, mid); 1VeCAx[e  
else ;4 &~i  
insertSort(data, l, mid - l + 1); Mo/xEB/O  
if ((r - mid) > THRESHOLD) e1#}/U  
mergeSort(data, temp, mid + 1, r); ] 3v  
else KNn E5f  
insertSort(data, mid + 1, r - mid); rtI4W  
F-nt7l  
for (i = l; i <= mid; i++) { {"<Q?yA2y  
temp = data; CNwhH)*  
} 5segzaI  
for (j = 1; j <= r - mid; j++) { SOm~];[  
temp[r - j + 1] = data[j + mid]; nD_g84us  
} {|fA{ Q_R  
int a = temp[l]; NO&OuiN  
int b = temp[r]; LRs{nN.N  
for (i = l, j = r, k = l; k <= r; k++) { HTC7fS  
if (a < b) { *?uF&( 0  
data[k] = temp[i++]; #X)s=Y&5!T  
a = temp; V3-LVgM%  
} else { a'|0e]  
data[k] = temp[j--]; k;)L-ge9  
b = temp[j]; \l:n  
} ,UP6.C14  
} R'{V&H^Z  
} UY==1\  
@U&|38  
/** ZE :oK   
* @param data Deam%)bXM]  
* @param l b~|B(lL6Xm  
* @param i au8) G_A  
*/ 2XE4w# [j  
private void insertSort(int[] data, int start, int len) { r"n)I$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h'bxgIl'`  
} []@Mk  
} zIL.R#|D=  
} {3;4=R3  
} ScI9.{  
f; 22viE  
堆排序: ~6OdPD  
NENbr$,G  
package org.rut.util.algorithm.support; {\%x{  
OTRTa{TB  
import org.rut.util.algorithm.SortUtil; R(:q^?  
xGA%/dy,;  
/** ?O_;{(F_  
* @author treeroot ;c'jBi5W  
* @since 2006-2-2 {30A1>0#P  
* @version 1.0 V7&L+]!  
*/ {u:DC4eut  
public class HeapSort implements SortUtil.Sort{ hGpaHY>My  
v/kYyz  
/* (non-Javadoc) eVy,7goh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }NUP[%  
*/ 8T%z{A1T  
public void sort(int[] data) { old}}>_  
MaxHeap h=new MaxHeap(); +pE-Yn`YS  
h.init(data); ;xb:{?  
for(int i=0;i h.remove(); j3FDGDrg  
System.arraycopy(h.queue,1,data,0,data.length); (BJs6":BFe  
} `'g%z: ~  
e]rWR  
private static class MaxHeap{ 6l50IWj,T  
rc$G0O  
void init(int[] data){ [1E u6X6  
this.queue=new int[data.length+1]; nJ6bC^*)U  
for(int i=0;i queue[++size]=data; ub-ZrC'  
fixUp(size); 0iwx$u 7[  
} Oh|Hy/&6W  
} M[X& Q  
8&3G|m1-2  
private int size=0; m:'fk;khN  
@P% &Dha  
private int[] queue; wL}=$DN  
f#[Fqkmj  
public int get() { kQYX[e7n  
return queue[1]; RhYf+?2  
} nlJxF5/  
Fd3V5h  
public void remove() { N5 g!,3  
SortUtil.swap(queue,1,size--); L"AZ,|wIk  
fixDown(1); &'R\yX<J)  
} b,I$.&BD  
file://fixdown rtOXK4)]I  
private void fixDown(int k) { w,^!kO0)~8  
int j; _PJd1P.k  
while ((j = k << 1) <= size) { b,s T[!X[  
if (j < size %26amp;%26amp; queue[j] j++; %rYd=Ri  
if (queue[k]>queue[j]) file://不用交换 `,xKK+~YG-  
break; gi~*1RIel;  
SortUtil.swap(queue,j,k); 0kmZO"K#e  
k = j; 'sJYt^  
} "/wZtc  
} aQcJjF5x  
private void fixUp(int k) { oKzLt  
while (k > 1) { @q|I$'K]x  
int j = k >> 1; p*vEVo  
if (queue[j]>queue[k]) b]@^SN9  
break; 0p8(Q  
SortUtil.swap(queue,j,k); u3kZOsG  
k = j; hv8V=Z'Q  
} - wCfwC  
} dZ_Hj X7  
$O=m/l $  
} ^hLAMaR  
B!6?+< J"  
} yyG:Kl  
G 9d@vu  
SortUtil: E7ixl~  
>/GVlXA'  
package org.rut.util.algorithm; { "=d7i  
wU+-;C5e  
import org.rut.util.algorithm.support.BubbleSort; -FdhV%5]  
import org.rut.util.algorithm.support.HeapSort; Eqnc("m)  
import org.rut.util.algorithm.support.ImprovedMergeSort; RP!X 5  
import org.rut.util.algorithm.support.ImprovedQuickSort; %i$]S`A}  
import org.rut.util.algorithm.support.InsertSort; F~4oPB K<  
import org.rut.util.algorithm.support.MergeSort; BlMc<k  
import org.rut.util.algorithm.support.QuickSort; k\I+T~~xD  
import org.rut.util.algorithm.support.SelectionSort; S}mqK|!  
import org.rut.util.algorithm.support.ShellSort;  {|a=  
.r$d 8J  
/** &E0P`F,GQA  
* @author treeroot $SA8$!:  
* @since 2006-2-2 {p-&8-  
* @version 1.0 ^pIT,|myY7  
*/ n}}$-xl  
public class SortUtil { rISg`-  
public final static int INSERT = 1; p78X,44xg  
public final static int BUBBLE = 2; *+rO3% ;t  
public final static int SELECTION = 3; ;(5b5PA  
public final static int SHELL = 4; iW9G0Ay  
public final static int QUICK = 5; '+JU(x{CCl  
public final static int IMPROVED_QUICK = 6; M|6 l  
public final static int MERGE = 7; B^Fe.ty  
public final static int IMPROVED_MERGE = 8; 1>|2B&_^  
public final static int HEAP = 9; 3%p^>D\  
4At{(fw W  
public static void sort(int[] data) { |Q[[WHqj2f  
sort(data, IMPROVED_QUICK); t&*X~(Yb!  
} -YPUrU[)  
private static String[] name={ :/A3l=}iV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EA) K"C  
}; B=8],_  
h0_od/D1r  
private static Sort[] impl=new Sort[]{ oF7o"NHaWa  
new InsertSort(), ,* !HN &  
new BubbleSort(), ^Cs?FF@P  
new SelectionSort(), !hdOH3h=  
new ShellSort(), 76Ho\}-U">  
new QuickSort(), B"P-h^oiV  
new ImprovedQuickSort(), YEqZ((H  
new MergeSort(), -C1,$mkj  
new ImprovedMergeSort(), sT ]JDC6  
new HeapSort() { )=h  
}; s"gNHp.oF  
mW- 4  
public static String toString(int algorithm){ AXFQd@#  
return name[algorithm-1]; B~xT:r  
} DPqk~KCM  
U|Z Yoc+](  
public static void sort(int[] data, int algorithm) { 2SVBuV/R  
impl[algorithm-1].sort(data); }M*yE]LL;Z  
} ,aq0Q<}~lc  
^/b3_aM5d  
public static interface Sort { '~{bq'7`m  
public void sort(int[] data); M^S <G  
} :rR)rj'  
xL&M8:  
public static void swap(int[] data, int i, int j) { #k?uYg8  
int temp = data; ~?E.U,R  
data = data[j]; Q#M@!&  
data[j] = temp; Pr|BhX  
} ,E ]vM&  
} O1xK\ogv  
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