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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。 '`9%'f)  
插入排序: uE"5cq'B/  
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package org.rut.util.algorithm.support; +ylxezc  
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import org.rut.util.algorithm.SortUtil; Q^*G`&w,  
/** umZlIH[7  
* @author treeroot ?@3#c  
* @since 2006-2-2 /&*m1EN#o  
* @version 1.0 v&p,Clt-2  
*/ kw 6cFz  
public class InsertSort implements SortUtil.Sort{ wEBtre7  
zt-'SY  
/* (non-Javadoc) 9 %D$T'K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f-vZ2+HP  
*/ u+I3IdU3  
public void sort(int[] data) { y T[Lzv#  
int temp; J"/ JRn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5dg-d\ 6S  
} UN-T ^  
} \R6;Fef  
} E}]I%fi  
F5<"ktnI  
} G /NT e  
;[FW!  
冒泡排序:  KYnW7|*  
Sg/:n,68  
package org.rut.util.algorithm.support; !S~,> ,yd  
O3_D~O ."  
import org.rut.util.algorithm.SortUtil; _L?v6MTj  
b^uP^](J  
/** >r;ABz/  
* @author treeroot R#"U/8b>z  
* @since 2006-2-2 %T`4!:vy  
* @version 1.0 q :TZ=bs^  
*/ fn1 ?Qp|  
public class BubbleSort implements SortUtil.Sort{ H;b8I  
tn"Y9 k|  
/* (non-Javadoc) ATKYjhc _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^zvA?'s  
*/ JN{<oxI  
public void sort(int[] data) { :hC {5!|  
int temp; v9Z lNA7m!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3C> 2x(]M  
if(data[j] SortUtil.swap(data,j,j-1); HF*j`}  
} B`g<Ge~  
} Q mb[ e>  
} Rf)'HT  
} S1D9AcK  
%MfGVx}nG  
} 1bV2  
T [T6  
选择排序: w^ixMn~nLF  
*Te4U5F  
package org.rut.util.algorithm.support; 6Y;Y}E  
S 23S.]r  
import org.rut.util.algorithm.SortUtil; X)`(nj  
xDPQG`6  
/** wm); aWP  
* @author treeroot s,eld@  
* @since 2006-2-2 >/7KL2*  
* @version 1.0 2uvQf&,  
*/ s(1_:  
public class SelectionSort implements SortUtil.Sort { }ZEfT]  
w o-O_uZB  
/* #2_o[/&}x@  
* (non-Javadoc) YWt"|  
* qR [}EX&3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =q_&* '  
*/ 91-P)%?  
public void sort(int[] data) { [<#<:h &\  
int temp; O, bfdc[g4  
for (int i = 0; i < data.length; i++) {  5uQv  
int lowIndex = i; v\vE^|-\/  
for (int j = data.length - 1; j > i; j--) { qT4I Y$h  
if (data[j] < data[lowIndex]) { zznPD%#Sc  
lowIndex = j; K$MJ#Zx^  
} ;whFaQi 4  
} #JJp:S~`   
SortUtil.swap(data,i,lowIndex); c[wQJc  
} OoAr%  
} JVJ1Ay/be  
j33P~H~  
} *=-__|t  
WmT}t  
Shell排序: $$2S*qY  
pm'@2dT  
package org.rut.util.algorithm.support; QOkE\ro  
Z$OF|ZZQ  
import org.rut.util.algorithm.SortUtil; E3CiZ4=5  
"TBQNWZ  
/** iF#}t(CrH  
* @author treeroot &rl]$Mtt  
* @since 2006-2-2 E1Ru)k{B  
* @version 1.0 uPv;y!Lsa@  
*/ >wg9YZ~8  
public class ShellSort implements SortUtil.Sort{ W2r6jm!  
%{N$1ht^  
/* (non-Javadoc) |d/x~t=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *j_fG$10g  
*/ 2FZ 0c/[&  
public void sort(int[] data) { Sy+]SeF&  
for(int i=data.length/2;i>2;i/=2){ Uy$U8b-ov  
for(int j=0;j insertSort(data,j,i); Y{Y;EY4  
} }5o~R~H  
} U:mq7Rd8  
insertSort(data,0,1); PBxK>a  
} Q.pEUDq/  
b*'=W"%\  
/** !LHzY(  
* @param data zCBtD_@  
* @param j y~]I Vl"  
* @param i C>w9 {h  
*/ 1K? & J2  
private void insertSort(int[] data, int start, int inc) { !^>LOH>j  
int temp;  Vq .!(x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Kc JP^  
} ]v^`+s}3  
} bMqu5G_q  
} v GR \GFm  
6mI_Q2  
} wZ]BY;  
.gM>FUH3L  
快速排序: e_>rJWI}  
uh C=  
package org.rut.util.algorithm.support; Ww'TCWk@  
r?5@Etpg  
import org.rut.util.algorithm.SortUtil; Uf7F8JZmM  
<\}Y@g8  
/** fcE/  
* @author treeroot .UT,lqEkv  
* @since 2006-2-2 {0A[v}X ~  
* @version 1.0 hVT=j ?~  
*/ DSDl[;3O{s  
public class QuickSort implements SortUtil.Sort{ D<_,>{$gW  
}QWTPRn  
/* (non-Javadoc) RKo P6LGw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :{wsd$Qlj  
*/ 0XQ".:+h  
public void sort(int[] data) { I9*BENkR  
quickSort(data,0,data.length-1); s_ GK;;  
} BuEQ^[Ex  
private void quickSort(int[] data,int i,int j){ @R'g@+{I  
int pivotIndex=(i+j)/2; }GoOE=rhY  
file://swap Cdt,//xrz  
SortUtil.swap(data,pivotIndex,j); GqIvvnw@f  
_pH6uuB  
int k=partition(data,i-1,j,data[j]); A5.'h<  
SortUtil.swap(data,k,j); (. quX@w"m  
if((k-i)>1) quickSort(data,i,k-1); ,rH)}C<Q+  
if((j-k)>1) quickSort(data,k+1,j); &-8-xw#.  
~P]HG;$?n  
} -h G 9  
/** r_g\_y7ua  
* @param data Cb@S </b  
* @param i ohc/.5Kl  
* @param j S0Bl?XsD_  
* @return _ntW}})K  
*/ I(?|Ox9"?  
private int partition(int[] data, int l, int r,int pivot) { ziLr }/tg  
do{ bn*{*=(|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8)-t91hkL  
SortUtil.swap(data,l,r); vYMbson}  
} 6XOpB^@  
while(l SortUtil.swap(data,l,r); zNsL^;uT  
return l; -X&!dV:= 4  
} J++sTQ(!?  
"f&i 251  
} ?) ,xZ1"  
n6%jhv9H  
改进后的快速排序: /ie3H,2  
LKqog%,c  
package org.rut.util.algorithm.support; 'a-5 U TT  
*nsnX/e(-  
import org.rut.util.algorithm.SortUtil; pZ_FVID  
(!>g8=`"  
/** Pv2nV!X6  
* @author treeroot >Rki[SNb-b  
* @since 2006-2-2 ,$6MM6W;-F  
* @version 1.0 JIY ^N9_  
*/ hyvV%z Z  
public class ImprovedQuickSort implements SortUtil.Sort { V&,<,iNN  
5cNzG4z  
private static int MAX_STACK_SIZE=4096; qh(-shZ4Du  
private static int THRESHOLD=10; UwL"%0u  
/* (non-Javadoc) "mP*}VF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X,!OWz:[  
*/ i3kI2\bd/  
public void sort(int[] data) { #Rm=Em}d  
int[] stack=new int[MAX_STACK_SIZE]; @Pb 1QLiz  
d"d)<f   
int top=-1; %\{?(baOA  
int pivot; Eps\iykB  
int pivotIndex,l,r; tFST.yT>zg  
li_pM!dWU_  
stack[++top]=0; [>J~M!yu:r  
stack[++top]=data.length-1; {ZsWZJ!  
8F\Msx  
while(top>0){ 3R=3\;  
int j=stack[top--]; |L_g/e1A3  
int i=stack[top--]; cdtzf:#q  
HyX4ob[X  
pivotIndex=(i+j)/2; eR* ]<0=  
pivot=data[pivotIndex]; #`#aSqGmc  
dW^_tzfF7  
SortUtil.swap(data,pivotIndex,j); oIL+@}u7  
qiKtR  
file://partition 5.K$ X$+7}  
l=i-1; ETWmeMN  
r=j; #PLB$$  
do{ a4a[pX,5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a@=36gx)  
SortUtil.swap(data,l,r); :{N3o:  
} DHumBnQ  
while(l SortUtil.swap(data,l,r); g 2 { ?EP  
SortUtil.swap(data,l,j); i;'X}KW  
ZhbY, wJ,  
if((l-i)>THRESHOLD){ KGE-RK  
stack[++top]=i; -TU{r_!Z(  
stack[++top]=l-1; mKFHT  
} 7E75s)KH  
if((j-l)>THRESHOLD){ !qGx(D{\  
stack[++top]=l+1; I`$I0  
stack[++top]=j; hIO4%RQj_  
} vzrD"  
q(ET)xCeD  
} pffw5Tc  
file://new InsertSort().sort(data); Z Lio8  
insertSort(data); MoR-8vnJ  
} _M]rH<h  
/** f_P+qm  
* @param data Oi%~8J>  
*/ @~U6=(+  
private void insertSort(int[] data) { 9@z|2z2\G  
int temp; $?A Uk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dZiWVa  
} u*-<5& X  
} ;!Z7-OZX  
} o` 1V  
CT:eV7<>s  
} KjfKo;T  
H"RF[bX(  
归并排序: `:BQ&T%UQR  
L"du"-  
package org.rut.util.algorithm.support; OTHd1PSOu  
>5vl{{,$K  
import org.rut.util.algorithm.SortUtil; Ty4%du6?d  
09;'z  
/** tG ^?fc  
* @author treeroot ]-Y]Q%A4  
* @since 2006-2-2 Rb}&c)4  
* @version 1.0 ^`r|3c0  
*/ ![hhPYmV  
public class MergeSort implements SortUtil.Sort{ _DvPF~  
G8DIig<  
/* (non-Javadoc) ,bwopRcA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AFB 7s z  
*/ ?Nze P?g  
public void sort(int[] data) { .L{+O6*c  
int[] temp=new int[data.length]; nIKT w  
mergeSort(data,temp,0,data.length-1); dVtLYx  
} qjEWk."  
k+GK1Yl  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2#A9D.- h  
int mid=(l+r)/2; ,lS-;.  
if(l==r) return ; y~ 4nF  
mergeSort(data,temp,l,mid); 7(USp#"  
mergeSort(data,temp,mid+1,r); [ma#8p)  
for(int i=l;i<=r;i++){ ,<j5i?  
temp=data; 5b4V/d* '  
} . .je<   
int i1=l; H{Y=&#%d  
int i2=mid+1; 7 8inh%  
for(int cur=l;cur<=r;cur++){ x7kg_`\U  
if(i1==mid+1) Jq<`j<'9  
data[cur]=temp[i2++]; u.4vp]eU  
else if(i2>r) `1}?{ud  
data[cur]=temp[i1++]; `iayh  
else if(temp[i1] data[cur]=temp[i1++]; wOkJ:k   
else lLFBop  
data[cur]=temp[i2++]; {UC<I.5X  
} RT A=|q  
} z,x"vK(  
OQ&D?2r  
} Y~SlipY_  
YM* 6W?  
改进后的归并排序: +C;#Qf  
QV7c9)<]'}  
package org.rut.util.algorithm.support; R$&&kmJ  
|laKntv2  
import org.rut.util.algorithm.SortUtil; MkGq%AE`Y  
V42*4hskL  
/** 4m(>"dHP  
* @author treeroot ]S aH/$  
* @since 2006-2-2 pV|?dQ  
* @version 1.0 $M<4Bqr  
*/ WHLKf  
public class ImprovedMergeSort implements SortUtil.Sort { gN'i+mQcu  
v.v%k2;  
private static final int THRESHOLD = 10; E0A|+P '?  
SFgIY]  
/* bYB}A :  
* (non-Javadoc) =&/a\z!  
* p[cL# fBz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >!F,y3"5S  
*/ r<N*N,~  
public void sort(int[] data) { ^?xJpr%)  
int[] temp=new int[data.length]; Z=[a 8CU  
mergeSort(data,temp,0,data.length-1); )j|y.[  
} J9c3d~YW  
LP6FSo~K  
private void mergeSort(int[] data, int[] temp, int l, int r) { #TwE??ms  
int i, j, k; ]3u'Qv}o  
int mid = (l + r) / 2; !!O{ ppM  
if (l == r) %FFm[[nxI  
return; =\7p0cq&*  
if ((mid - l) >= THRESHOLD) }JMkM9]  
mergeSort(data, temp, l, mid); pyJOEL]1F  
else JwVC?m).  
insertSort(data, l, mid - l + 1); =usDI<3r  
if ((r - mid) > THRESHOLD) _`[6jhNa!  
mergeSort(data, temp, mid + 1, r); u0hbM9U>  
else z n8ig/C  
insertSort(data, mid + 1, r - mid); NG!Q< !Y  
Xq!tXJ)  
for (i = l; i <= mid; i++) { Cwf$`?|W  
temp = data; Rj;e82%%N  
} "UnSZ[;t  
for (j = 1; j <= r - mid; j++) { Y8{1?LO  
temp[r - j + 1] = data[j + mid]; TaJn2cC^  
} 5(`GF|  
int a = temp[l]; -gGK(PIf  
int b = temp[r]; !TZ/PqcE  
for (i = l, j = r, k = l; k <= r; k++) { )stWr r&  
if (a < b) { 2]*~1d  
data[k] = temp[i++]; 'c{]#E1}  
a = temp; &U)s%D8e;d  
} else { BQ0PV  
data[k] = temp[j--]; BXw,Rz }  
b = temp[j]; )qXe`3 d5  
} 9<CUsq@i:  
} Z=8CbS).  
} x%ag.g2I  
gc) 3  
/** tvxcd*{  
* @param data ; 2-kQK9  
* @param l Q&Ahr  
* @param i qk1D#1vl  
*/ 6mpUk.M"  
private void insertSort(int[] data, int start, int len) { $%8n,FJ[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yOzKux8kB  
} tKGsrgoV  
} ^WPV  
} +%9Y7qol  
} J c^ozw  
=8_TOvSJ4p  
堆排序: vqZM89 xY  
=Fl4tY#X  
package org.rut.util.algorithm.support; q#-H+7 5  
~0Q72  
import org.rut.util.algorithm.SortUtil; i>zyn-CuW  
Dy@NgHe  
/** =JH,RQ *  
* @author treeroot =@XR$Uud6  
* @since 2006-2-2 5D*V%v  
* @version 1.0 EQO7:vb  
*/ *3($s_r>  
public class HeapSort implements SortUtil.Sort{ YKd?)$J  
P32'`!/:  
/* (non-Javadoc) Y @&nW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jhM|gV&  
*/ "T=LHjE  
public void sort(int[] data) { UF&Wgj [  
MaxHeap h=new MaxHeap(); R)Fl@ Tn  
h.init(data); :''0z  
for(int i=0;i h.remove(); K L~sEli  
System.arraycopy(h.queue,1,data,0,data.length); P~Owvs/=  
} Xrn~ ]P7  
nz l,y,  
private static class MaxHeap{ p:%E>K1<  
^ ?9 ~R"  
void init(int[] data){ ! NE q|Y  
this.queue=new int[data.length+1]; @$G K<jl  
for(int i=0;i queue[++size]=data; `"Pd$jW  
fixUp(size); "ZW*O{  
} )\G#[Pc7  
} t]%R4ymV  
<sOB j'  
private int size=0; <P- r)=^  
K\Q 1/})  
private int[] queue; j,jUg}b  
QNEaj\   
public int get() { >z$|O>j  
return queue[1]; ]!w52kF7  
} 3i~{x[Jc  
r'?&VS-Cj  
public void remove() { t$iU|^'uV  
SortUtil.swap(queue,1,size--); ,Z"sh*  
fixDown(1); s:P-F0q!&  
} oGJI3Oh  
file://fixdown w2GY,,R  
private void fixDown(int k) { $hh=-#J8  
int j; BJ/%{ C`g  
while ((j = k << 1) <= size) { 4HAfTQ 1G  
if (j < size %26amp;%26amp; queue[j] j++; ElxbHQj6  
if (queue[k]>queue[j]) file://不用交换 r$zXb9a|<  
break; N@S;{uK  
SortUtil.swap(queue,j,k); k2;yl _7  
k = j; J( 60eTwQ  
} :;QLoZh^  
} {S!~pn&^Y  
private void fixUp(int k) { E)bP}:4V  
while (k > 1) { 3kg+*]tLx  
int j = k >> 1; 9'M({/7y  
if (queue[j]>queue[k]) 2e &Zs%u  
break; isqW?$s  
SortUtil.swap(queue,j,k); LBR_Q0EP  
k = j; (?(ahtT4T  
} ga1RMRu+  
} M Cz3RZK  
Sob+l'U$  
} .H "gH-I  
);vU=p"@  
} z`CI gSR  
y|ZJ-[qg  
SortUtil: h#>67gJV  
)`a R?_  
package org.rut.util.algorithm; iC">F.9#  
5k@ k  
import org.rut.util.algorithm.support.BubbleSort; }T6jQ:?@  
import org.rut.util.algorithm.support.HeapSort; IiL?@pIq  
import org.rut.util.algorithm.support.ImprovedMergeSort; @<+(40`*  
import org.rut.util.algorithm.support.ImprovedQuickSort; BScysoeD  
import org.rut.util.algorithm.support.InsertSort; "[G P)nC  
import org.rut.util.algorithm.support.MergeSort; (1R,   
import org.rut.util.algorithm.support.QuickSort; m-K6y7t  
import org.rut.util.algorithm.support.SelectionSort; {^v50d  
import org.rut.util.algorithm.support.ShellSort; f|EWu  
b^ZrevM  
/** 59LIK&w  
* @author treeroot y}|zH  
* @since 2006-2-2 4V=dD<3m  
* @version 1.0 ,}<v:!  
*/ n*V^Q f  
public class SortUtil { L/shF}<  
public final static int INSERT = 1; `8Gwf;P1  
public final static int BUBBLE = 2; DF#Ob( 1  
public final static int SELECTION = 3; )pJzw-m"  
public final static int SHELL = 4; )g-*fSa  
public final static int QUICK = 5; WZ ZD  
public final static int IMPROVED_QUICK = 6; phTZUm i  
public final static int MERGE = 7; Yq.Omr!  
public final static int IMPROVED_MERGE = 8; r$+9grm<  
public final static int HEAP = 9; h0!j;fn  
}b44^iL$9y  
public static void sort(int[] data) { @0aUWG!k  
sort(data, IMPROVED_QUICK); jjs-[g'}  
} C>LkU|[  
private static String[] name={ j1g^Q$B>m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7oUYRqd  
}; ^0VI J)y  
- Q,lUP  
private static Sort[] impl=new Sort[]{ _3`{wzMA  
new InsertSort(), ^LZU><{';  
new BubbleSort(), -.xs=NwB.|  
new SelectionSort(), [!v:fj  
new ShellSort(), @wB$qd;v  
new QuickSort(), %_5B"on  
new ImprovedQuickSort(), rZ^DiFR  
new MergeSort(), H>VuUH|  
new ImprovedMergeSort(), G.9?ApG9  
new HeapSort() !X8:#a(  
}; n U/v(lN  
<^M`U>   
public static String toString(int algorithm){ !Y5O3^I=u  
return name[algorithm-1]; &a O3N  
} gXG1w>  
#Ez>]`]TB  
public static void sort(int[] data, int algorithm) { ~v2_vEu}JX  
impl[algorithm-1].sort(data); 2@=JIMtc  
} /mvuSNk  
R}*e%EG/  
public static interface Sort { i_V~SC`  
public void sort(int[] data); d!8`}L:=M  
} )Nk^;[  
 ;A1pqHr  
public static void swap(int[] data, int i, int j) { D guAeK  
int temp = data; m"NZ;*d'  
data = data[j]; &c0U\G|j  
data[j] = temp; Q4C28-#  
} lQldW|S>  
} 7\eN 8+  
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