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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。 hle@= e/n  
插入排序: 1VG7[#Zy  
do@BJWo  
package org.rut.util.algorithm.support; @FuX^Q.[  
_?9|,  
import org.rut.util.algorithm.SortUtil; C6:; T%  
/** ra{HlB{  
* @author treeroot >orDw3xC  
* @since 2006-2-2 h>n<5{zqM  
* @version 1.0 xQ8?"K;iX  
*/ \eS-wO7%  
public class InsertSort implements SortUtil.Sort{ "C]_pWk  
_^Q =n>G  
/* (non-Javadoc) $9<P3J 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y?V#LW[^E  
*/ RZI4N4o  
public void sort(int[] data) { &fwb?Vn4  
int temp; u]t#Vf-$u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o&rNM5:  
} |z.Ov&d4)(  
} zA&]#mc  
} WO{9S%ck  
h?&S*)1  
} ],Y+|uX->  
gOn^}%4.I  
冒泡排序: (%|L23  
 Tv~Ys#  
package org.rut.util.algorithm.support; XNB4KjT  
CGCSfoS9f  
import org.rut.util.algorithm.SortUtil; Y_M3-H=0  
qF4pTQf  
/** J ?H| "  
* @author treeroot zvh&o*\2<d  
* @since 2006-2-2 hgF4PdO1e  
* @version 1.0 Rm=[Sj84  
*/ )cxML<j'  
public class BubbleSort implements SortUtil.Sort{ BxGz4  
c`!8!R  
/* (non-Javadoc) `xu/|})KI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 08;t%[R  
*/ (J\Qo9Il  
public void sort(int[] data) { 3AarRQWsn  
int temp; +FtL_7[v  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Pqv9> N|  
if(data[j] SortUtil.swap(data,j,j-1); I i J%.U  
} PD@@4@^  
} SR&'38UCe  
} REKv&^FLN  
} W$?Bsz)  
Y1U\VU  
} sqk$q pV6  
,2^zX]dgM  
选择排序: 1$rrfg  
7Dwf0Re`  
package org.rut.util.algorithm.support; jxA*Gg3cT5  
I=wA)Bli1p  
import org.rut.util.algorithm.SortUtil; DX@*lM  
g+92}$_  
/** vhu5w#]u*  
* @author treeroot ~JxAo\2i  
* @since 2006-2-2 #kL4Rm;  
* @version 1.0 ryoD 1OE  
*/ . g95E<bd  
public class SelectionSort implements SortUtil.Sort { L9(!L$  
NW@guhK.  
/* ^1w*$5YI  
* (non-Javadoc) @P}!mdH1  
* rJ_fg$.<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '5m`[S-IU  
*/ zu|=1C#5h  
public void sort(int[] data) { / ,#&Htk  
int temp; WG.J-2#3  
for (int i = 0; i < data.length; i++) { {,b:f  
int lowIndex = i; "ku ?A^f  
for (int j = data.length - 1; j > i; j--) { >Y[nU~w  
if (data[j] < data[lowIndex]) { 5nJmabw3  
lowIndex = j; XKT2u!Lx  
} L# NW<T  
} ]h0K*{  
SortUtil.swap(data,i,lowIndex); lhhp6-r  
} jCv%[H7  
} .#$D\cwV  
%y}l^P5z  
} *L~88-V^  
a76`"(W  
Shell排序: V61.UEN  
]R  s  
package org.rut.util.algorithm.support; Ww$ ?X LF  
c<j  +"  
import org.rut.util.algorithm.SortUtil; .jjv S  
by%k*y  
/** yu] nK-Y7S  
* @author treeroot 60&4?<lR4  
* @since 2006-2-2 } X[wWH  
* @version 1.0 h$eVhN &Vv  
*/ ia}V8i  
public class ShellSort implements SortUtil.Sort{ |qTS{qQh{L  
7ZRLSq'S  
/* (non-Javadoc) {QRrAi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p-;I"uKv  
*/ QnNddCiu=  
public void sort(int[] data) { p6e9mSs  
for(int i=data.length/2;i>2;i/=2){ X:Z*7P/  
for(int j=0;j insertSort(data,j,i); 6t(I.>-  
} $S _VR  
} a4iq_F#NF  
insertSort(data,0,1); 4P\?vz"  
} *wetPt)~v_  
x nm!$ $W  
/** &DgJu.  
* @param data qC aM]Y  
* @param j D,J yb0BW  
* @param i -YHyJs-bU  
*/ woCFkO;'O  
private void insertSort(int[] data, int start, int inc) { ^`XTs!.  
int temp; RTR@p =ck  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )w3HC($g  
} 5L8)w5   
} -^%YrWgd?  
} $"G=r(MW  
t&99ZdE  
} &;O)Dw  
gr y]!4Hy  
快速排序: ;3H#8x-  
p&~= rp`E  
package org.rut.util.algorithm.support; #XJ`/\E]  
zU$S#4/C  
import org.rut.util.algorithm.SortUtil; hB)TH'R{:  
Ei[>%Ah  
/** 8bIwRVA2\  
* @author treeroot b4HUgW3Ac  
* @since 2006-2-2 $-:j'e:j  
* @version 1.0 pl.K*9+  
*/ rWo&I _{  
public class QuickSort implements SortUtil.Sort{ ?pJUbZ#J  
;jgJI~3l  
/* (non-Javadoc) zU1[+JJY"{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ s2<y@  
*/ M:? :EJ  
public void sort(int[] data) { [C"[#7  
quickSort(data,0,data.length-1);  H*]B7?S  
} `K^j:fE7n  
private void quickSort(int[] data,int i,int j){ 8P#jC$<  
int pivotIndex=(i+j)/2; )m7 Yo  
file://swap U1wsCH3+n  
SortUtil.swap(data,pivotIndex,j); v!EE[[  
Q7b$j\;I  
int k=partition(data,i-1,j,data[j]); .}.63T$h9  
SortUtil.swap(data,k,j); 5, <:|/r  
if((k-i)>1) quickSort(data,i,k-1); ;.<0lnV  
if((j-k)>1) quickSort(data,k+1,j); aJi0!6oy  
9M&uQccY  
} CkJ\v%JAW  
/** @3:oo /;  
* @param data _PR> <L_  
* @param i OAhCW*B  
* @param j C3p/|{TP  
* @return .%rB-vO:g  
*/ \-?@ &' :  
private int partition(int[] data, int l, int r,int pivot) { If*t$f>y4N  
do{ v3vQfcxR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^Q'^9M2)  
SortUtil.swap(data,l,r); mSu1/?PS  
} *&VqAc%qD  
while(l SortUtil.swap(data,l,r); Jm l4EW7  
return l; eZ^-gk?  
} aF~ 0\XC  
R} #6  
} DWQ@]\  
>pV|c\  
改进后的快速排序: g}\Yl.  
,?Bo x  
package org.rut.util.algorithm.support; 9. 7XRxR^  
)j[rm   
import org.rut.util.algorithm.SortUtil; *mgK^9<  
LmKG6>Q1#1  
/** Mk-Rl  
* @author treeroot @}{~Ofs  
* @since 2006-2-2 vQ/&iAyut  
* @version 1.0 RI q9wD}4(  
*/ [aK7v{Wu  
public class ImprovedQuickSort implements SortUtil.Sort { ??!+2G#%!  
' N@1+v=  
private static int MAX_STACK_SIZE=4096; )Bq~1M 2  
private static int THRESHOLD=10; &u_s*  
/* (non-Javadoc) )OAd[u<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@n9i@UsO  
*/ AJ*FQo.U  
public void sort(int[] data) { 3 oG5E"G  
int[] stack=new int[MAX_STACK_SIZE]; -R[ *S "  
(\Qk XrK  
int top=-1; Ris5) *7  
int pivot; g`}+K U  
int pivotIndex,l,r; S]7RGzFe  
x[,HK{U|t  
stack[++top]=0; ];.H]TIc6  
stack[++top]=data.length-1; 3\xvy{r  
PV*U4aP  
while(top>0){ R0n# FL^E  
int j=stack[top--]; WzC_M>_  
int i=stack[top--]; 0pSqk/  
|G5Me  
pivotIndex=(i+j)/2; ].j;d2xT\  
pivot=data[pivotIndex]; p)$DpNL% p  
ZPT6 p J  
SortUtil.swap(data,pivotIndex,j); F|3 =Cl  
O+Zt*jN;  
file://partition 39w|2%(O.  
l=i-1; GJLlMi  
r=j; ]&')# YO  
do{ Ig hd,G-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8}& O7zO?  
SortUtil.swap(data,l,r); MMMuT^X  
} <3wfY #;><  
while(l SortUtil.swap(data,l,r); i U^tv_1  
SortUtil.swap(data,l,j); 5s >UM@})  
[ ET03 nZ  
if((l-i)>THRESHOLD){ J~6-}z   
stack[++top]=i; >&|C E2'  
stack[++top]=l-1; [,Io!O  
} MVGznf?  
if((j-l)>THRESHOLD){ uIG,2u,  
stack[++top]=l+1; rI\G&OqpP  
stack[++top]=j; 6dRxfbL  
} 6w d0"  
h|_E>6d)  
} Sc!{ o!9\  
file://new InsertSort().sort(data); qjsS2,wM  
insertSort(data); [dK5kO  
} 0u]!C"VX  
/** Xgge_`T9  
* @param data 6iiH+Nc  
*/ -/>SdR$D7  
private void insertSort(int[] data) { =kp-[7  
int temp; O<0G\sU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z9k3@\7  
} Z\{"/( Hi  
} Ut;, Z  
} `wJR^O!e  
6]=R#d 7U  
} kvzGI>H:  
E1U~ ew  
归并排序: A8?uCkG  
~bp^Q| wM  
package org.rut.util.algorithm.support; jpl"KN?X  
H1]An'qz,  
import org.rut.util.algorithm.SortUtil; fa7I6 i  
Pd99vq/  
/** n5Ad@Bg  
* @author treeroot [MmOPm}@  
* @since 2006-2-2 c :S A#.  
* @version 1.0 6R%Ra  
*/ ZSKSMI%D  
public class MergeSort implements SortUtil.Sort{ 0-ISOA&  
9V]\,mD=  
/* (non-Javadoc) y#'|=0vTvP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oy :;v7  
*/ }n+#o!uEf  
public void sort(int[] data) { 28KS*5S  
int[] temp=new int[data.length]; ;]* %wX  
mergeSort(data,temp,0,data.length-1); H\OV7=8  
} S H"e x,=  
gK{-eS  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^f:oKKaAW;  
int mid=(l+r)/2; qSRE)C=)  
if(l==r) return ; ,)u\G(N  
mergeSort(data,temp,l,mid); 7V6gT}R  
mergeSort(data,temp,mid+1,r); - J9K  
for(int i=l;i<=r;i++){ gpBpG  
temp=data; '%@fW:r~  
} UN7>c0B  
int i1=l; >4gGb)  
int i2=mid+1; Cv@ZzILyoK  
for(int cur=l;cur<=r;cur++){ uyt]\zVT  
if(i1==mid+1) qNI2+<u)j  
data[cur]=temp[i2++]; ('qu#.'  
else if(i2>r) (Kl96G<Wej  
data[cur]=temp[i1++]; <r_L-  
else if(temp[i1] data[cur]=temp[i1++]; yF &"'L  
else Nr\[|||%  
data[cur]=temp[i2++]; m{(G%n>E&  
} 'lPt.*Y<u  
} $"z|^ze  
0ZY.~b'eu  
} o ]UG*2  
|p"P+"#  
改进后的归并排序:  ~yQby&s  
wb@TYvDt  
package org.rut.util.algorithm.support; d4Y8q1  
|!VSed#FSn  
import org.rut.util.algorithm.SortUtil; ou;E@`h;x  
n>d@}hyv  
/** oMH-mG7:K  
* @author treeroot :J|t! `  
* @since 2006-2-2 F ] e]  
* @version 1.0 =-XI)JV#  
*/ 0{0|M8  
public class ImprovedMergeSort implements SortUtil.Sort {  jpc bW  
o1x IGP<  
private static final int THRESHOLD = 10; Q/oel'O*x  
ai7*</ls  
/* 7B@[`>5?%L  
* (non-Javadoc) 1'c  
* 0_d,sC?V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )/BI :)  
*/ jmgU'w-s  
public void sort(int[] data) { NwH`t#zd  
int[] temp=new int[data.length]; 3urL*Fw,  
mergeSort(data,temp,0,data.length-1); %:bTOw[4r  
} U$; FOl  
v%_5!SR  
private void mergeSort(int[] data, int[] temp, int l, int r) { L*TPLS[lh  
int i, j, k; %d<uOCf\Q  
int mid = (l + r) / 2; u{F^Ngy )  
if (l == r) zKycd*X  
return; 's.%rre%  
if ((mid - l) >= THRESHOLD) UZ8 vZ  
mergeSort(data, temp, l, mid); 8!a6)Zeux  
else Q;m:o8Q5  
insertSort(data, l, mid - l + 1); .VFa,&5;3  
if ((r - mid) > THRESHOLD) 9>y6zFTV  
mergeSort(data, temp, mid + 1, r); ?&Zfb  
else }co v"o  
insertSort(data, mid + 1, r - mid); }}AooziH9  
aJ[K'5|  
for (i = l; i <= mid; i++) {  3z^l  
temp = data; X2avo|6e  
} k 7 !{p  
for (j = 1; j <= r - mid; j++) { 739J] M  
temp[r - j + 1] = data[j + mid]; E;[ANy4L  
} V2< 4~J2:9  
int a = temp[l]; ~*WSH&ip  
int b = temp[r]; [ugBVnma  
for (i = l, j = r, k = l; k <= r; k++) { wYxnKm~f  
if (a < b) { !+qy~h  
data[k] = temp[i++]; b2x8t7%O  
a = temp; FBn`sS8hH  
} else { Ep/kb-~-  
data[k] = temp[j--]; p~ `f.q$'  
b = temp[j]; cVrses^yE  
} e0i&?m  
} w Phs1rL  
} ?nWK s  
xHs8']*\  
/** eGZ{%\PH<  
* @param data  4wLp  
* @param l !!NVx\a  
* @param i O gQE1{C  
*/ Y9h~ hD  
private void insertSort(int[] data, int start, int len) { x1\ a_Kt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EZ+_*_9  
} GEr]zMYG[A  
} 'g<0MOq{  
} 1BQB8i-,  
} q&.SB`  
=c{ / Z  
堆排序: Im9^mVe  
< * )u\A  
package org.rut.util.algorithm.support; V~rF`1+5N  
giU6f!%  
import org.rut.util.algorithm.SortUtil; _x<CTFTL  
Jf<+VJ>t  
/** }@-4*5P3  
* @author treeroot O2[uN@nY  
* @since 2006-2-2 :Oz! M&Ov  
* @version 1.0 >P7|-bV  
*/ P4vW.|@  
public class HeapSort implements SortUtil.Sort{ [[{y?-U  
tx=~bm"*?  
/* (non-Javadoc) wO6`Ap t1:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Etk`>,]Y>y  
*/ ^rd]qii"  
public void sort(int[] data) { &%QtUPvr9  
MaxHeap h=new MaxHeap(); BdHLow  
h.init(data); ulM6R/ V:?  
for(int i=0;i h.remove(); i#$N,kt  
System.arraycopy(h.queue,1,data,0,data.length); 92}UP=RW!  
} a0y7a/@c  
>3HLm3T  
private static class MaxHeap{ F<wwuCbF  
&lg+uK  
void init(int[] data){ !C&!Wj  
this.queue=new int[data.length+1]; A;~u"g'z&  
for(int i=0;i queue[++size]=data; 52-Gk2dp  
fixUp(size); chE~UQ  
} B2UQO4[w  
} KNtsz[#b  
nK*$P +[R  
private int size=0; l@-J&qG  
OSc&n>\t  
private int[] queue; cnh\K.*}_x  
]V!q"|  
public int get() { 8$ dJh]\Y  
return queue[1]; u_.`I8qa  
} &P Ru[!  
<&3qFK*9r  
public void remove() { Q<$I,C]  
SortUtil.swap(queue,1,size--); S:qML]RO  
fixDown(1); _9!_fIY  
} Xz`?b4i  
file://fixdown =y" lX{}G  
private void fixDown(int k) { @}&o(q1M0  
int j; _1w?nN'  
while ((j = k << 1) <= size) { 2J;h}/!H  
if (j < size %26amp;%26amp; queue[j] j++; Q/T\Rr_d  
if (queue[k]>queue[j]) file://不用交换 Yc+0OBH[  
break; [([?+Ouy  
SortUtil.swap(queue,j,k); y>zPsc,  
k = j; mZ9+.lm  
} !Kv.v7'N/k  
} yQ)y#5/<6  
private void fixUp(int k) { wTBp=)1)f  
while (k > 1) { 9)={p9FZY  
int j = k >> 1; I>X_j)  
if (queue[j]>queue[k]) \D8d!gr  
break; K9Dxb  
SortUtil.swap(queue,j,k); {3Z&C$:s  
k = j; Y$8 >fv  
} 3RpDIl`0  
} ~Ein)5  
lxTW1kr  
} Z IfhC'  
DJSSc  
} D@T>z;  
AtNu:U$  
SortUtil: e-Z+)4fH  
[G{{f  
package org.rut.util.algorithm; ^7Q}W#jy  
W.h6g8|wx  
import org.rut.util.algorithm.support.BubbleSort; CA[-\>J7y  
import org.rut.util.algorithm.support.HeapSort; !( xeDX  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0tVZvXgTu  
import org.rut.util.algorithm.support.ImprovedQuickSort; l_JPkM(mJw  
import org.rut.util.algorithm.support.InsertSort; >/;V_(  
import org.rut.util.algorithm.support.MergeSort; N_TWT&o4  
import org.rut.util.algorithm.support.QuickSort; 9kj71Jp&}  
import org.rut.util.algorithm.support.SelectionSort; 4}sfJ0HhX  
import org.rut.util.algorithm.support.ShellSort; wkm;yCF+  
Mfjj+P  
/** pQc5'*FKd  
* @author treeroot aML?$_6  
* @since 2006-2-2 `A O_e4D0i  
* @version 1.0 :Mr_/t2(  
*/ xk=5q|u_-  
public class SortUtil { r=[T5,L(s  
public final static int INSERT = 1; T1ZAw'6(K  
public final static int BUBBLE = 2; wPTXRq%  
public final static int SELECTION = 3; >W[8wR  
public final static int SHELL = 4; T 'pX)ZH  
public final static int QUICK = 5; Kx.I'_Qk  
public final static int IMPROVED_QUICK = 6; .L'>1H]B  
public final static int MERGE = 7; Q jMH1S  
public final static int IMPROVED_MERGE = 8; ^]}UyrOn  
public final static int HEAP = 9; fw@n[u{~  
'6*^s&H~  
public static void sort(int[] data) { H8j#rC#&pm  
sort(data, IMPROVED_QUICK); !gv/jdF  
} #)`N  
private static String[] name={ D2x-Wa  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >x0"gh  
}; 1au1DvH  
"\bbe@  
private static Sort[] impl=new Sort[]{ *"#62U6  
new InsertSort(), FCxLL"))  
new BubbleSort(), 9:N@+;|T  
new SelectionSort(), HgJ:Rf]  
new ShellSort(), +VSJve |  
new QuickSort(), \v bU| a  
new ImprovedQuickSort(), *9((X,v@/  
new MergeSort(), ej dYh $  
new ImprovedMergeSort(),  }6SfI;  
new HeapSort() f Co-ony  
}; 8/X#thG  
_y{z%-  
public static String toString(int algorithm){ w[@>k@=  
return name[algorithm-1]; 7!Z\B-_,  
} &U:bRzD  
:lQl;Q -e  
public static void sort(int[] data, int algorithm) { ,w%cX{  
impl[algorithm-1].sort(data); T% J;~|  
} Fi.gf?d  
-miWXEe@l  
public static interface Sort { t3!?F(&  
public void sort(int[] data); s"b()JP  
} We3Z#}X  
mB &nN+MV  
public static void swap(int[] data, int i, int j) { $@kGbf~k  
int temp = data; +9db1:  
data = data[j]; FWqnlK#  
data[j] = temp; (6i)m c(  
} vKYdYa\  
} kylR)  
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