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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。 K/Q^8%Z  
插入排序: k zhek >  
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package org.rut.util.algorithm.support; esH>NH_  
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import org.rut.util.algorithm.SortUtil; ^l#Z*0@><~  
/** #vi `2F  
* @author treeroot 5Sd+Cc  
* @since 2006-2-2 qp*C%U  
* @version 1.0 y4aSf2   
*/ + #gJ[Cc  
public class InsertSort implements SortUtil.Sort{ /I{<]m$  
N"2Ire  
/* (non-Javadoc) JcEPwF.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8\m_.e  
*/ d `LBFH,  
public void sort(int[] data) { .jRp.U  
int temp; 8kQ >M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vx@JP93|  
}  k%V#{t.  
} *%L:soM'Ll  
} `7qZ6Z3z@  
=[!&&,c=  
} !/G2vF"  
TI-8I)  
冒泡排序: 7aVQp3<  
+0mU)4n/  
package org.rut.util.algorithm.support; A-\OB Nh  
nwh7DU i  
import org.rut.util.algorithm.SortUtil; ?yfk d:WD  
gF;i3OJg  
/** DVxW2J  
* @author treeroot q.0a0 /R  
* @since 2006-2-2 q3\ YL?  
* @version 1.0 dEU +\NY  
*/ !(PAUW S@  
public class BubbleSort implements SortUtil.Sort{ xJ>U_Gd  
 V3WHp'1  
/* (non-Javadoc) +]-~UsM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ZX71-  
*/ OosxuAC(  
public void sort(int[] data) { [mKPOg-t  
int temp; 1.YDIB||  
for(int i=0;i for(int j=data.length-1;j>i;j--){ VfOm#Ue0 q  
if(data[j] SortUtil.swap(data,j,j-1); >K$9 (  
} won;tO]\;@  
} m @) ~.E  
} b: UTq 7^  
} t W ;1  
5LU8QHj3  
} ; F% 3b47  
~aKxwH  
选择排序: ?sV0T)uk  
,$ L>  
package org.rut.util.algorithm.support; )%lPa|7s  
H(U`S  
import org.rut.util.algorithm.SortUtil; ,)3%@MwO  
]NS{q85  
/** !E<y:$eH:  
* @author treeroot e;9Z/);#s  
* @since 2006-2-2 5Jd(&k8%  
* @version 1.0 t<5 $85Y~  
*/ hnag <=  
public class SelectionSort implements SortUtil.Sort { LY b@0O<w  
6qQdTp{i  
/* [+EmV>Y  
* (non-Javadoc) .6Tan2[%  
* XVcY?_AS#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cl kL)7RQ  
*/ VWqmqR%  
public void sort(int[] data) { b6sj/V8  
int temp; 7M*&^P\}es  
for (int i = 0; i < data.length; i++) { K[JbQ30  
int lowIndex = i; 5 s3!{zT{  
for (int j = data.length - 1; j > i; j--) { 5[3vu p?  
if (data[j] < data[lowIndex]) {  nen(  
lowIndex = j; mm(Ff>O  
} Y=+pz^/"  
} UfcQFT{()  
SortUtil.swap(data,i,lowIndex); +~b@W{  
} M:6Yy@#T.  
} 9<BC6M_/  
X}*\/(fzl  
} 8UiRirw  
o NX-vN-  
Shell排序: 2fIHFo\8  
~R-P%l P  
package org.rut.util.algorithm.support; j4h6p(w{  
Q-<N)K$F(4  
import org.rut.util.algorithm.SortUtil; ayR=GqZ1  
3Au3>q,  
/** SPfz/ q{  
* @author treeroot / i[F  
* @since 2006-2-2 C;]}Ht:~I  
* @version 1.0 57 (bd0@8  
*/ 7]se!k,  
public class ShellSort implements SortUtil.Sort{ r'!L}^n  
\ vf&Ldk  
/* (non-Javadoc) m,YBk<Bx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _p0@1 s(U  
*/ a=n* }.  
public void sort(int[] data) { @I_!q*  
for(int i=data.length/2;i>2;i/=2){ %0 cFs'  
for(int j=0;j insertSort(data,j,i); oD1rt>k  
} LsB|}_j7  
} A=8%2U wI  
insertSort(data,0,1); WUnz  
} {/|RKV83  
x_Y03__/  
/** +/+:D9j ,  
* @param data VZhtx)  
* @param j (R^X3  
* @param i +S/OMkC  
*/ kucH=96  
private void insertSort(int[] data, int start, int inc) { r{oRN  
int temp; JmlMfMpXMs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /j%(Z/RM  
} 9R$0[HbI3  
} QX`Qnk|Y  
} hb@,fgo!Q  
.8[*`%K>  
} tZ|0wPp  
)wT @`p"4  
快速排序: n{'LF #4l  
vH14%&OcN  
package org.rut.util.algorithm.support; >#pZ`oPEAv  
FYe#x]ue  
import org.rut.util.algorithm.SortUtil; 05 56#U&>  
>+}yI}W;e  
/** E}-Y!,v^  
* @author treeroot Lt'FA  
* @since 2006-2-2 LT+QW  
* @version 1.0 /:S&1'=  
*/ 3` ,u^ w  
public class QuickSort implements SortUtil.Sort{ p;nRxi7'  
o'Rr2,lVi  
/* (non-Javadoc) {N.J A=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 LotN6H  
*/ ^:hI bF4G  
public void sort(int[] data) { $W_sIS0\z  
quickSort(data,0,data.length-1); OoIs'S-Z#  
} _z6_mmMp  
private void quickSort(int[] data,int i,int j){ ( AI gW  
int pivotIndex=(i+j)/2; Ec2?'*s   
file://swap :X+!W_xR  
SortUtil.swap(data,pivotIndex,j); PCqE9B)l  
#/"?.Z;SSH  
int k=partition(data,i-1,j,data[j]); )h0 3sv  
SortUtil.swap(data,k,j); 85e!)I_  
if((k-i)>1) quickSort(data,i,k-1); {pJf ~  
if((j-k)>1) quickSort(data,k+1,j); v?6g. [;?  
{wK| C<K  
} czG]rl\1  
/**  yxx9h3  
* @param data |[+/ ]Y  
* @param i e-E0Bp  
* @param j ~7;AV(\%e  
* @return J ?y0R X  
*/ Xzn}gH]  
private int partition(int[] data, int l, int r,int pivot) { I9VU,8~  
do{ 7cMHzh k^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DH IC:6EY  
SortUtil.swap(data,l,r); G*N}X3H:o  
} ==!k99`f,  
while(l SortUtil.swap(data,l,r); Ns2<wl-  
return l; ^}Wk  
} ; ElwF&"!X  
bI?uV;m>  
} HI\V29 a  
;0"p)O@s04  
改进后的快速排序: tX.fbL@ T  
lnQfpa8j  
package org.rut.util.algorithm.support; l $:?82{  
^.g BHZ  
import org.rut.util.algorithm.SortUtil; UlD]!5NO  
 I?R?rW  
/** `fM]3]x>  
* @author treeroot E7`Q =4@e  
* @since 2006-2-2 goje4;  
* @version 1.0 gt \O  
*/ !+o`,KTYp  
public class ImprovedQuickSort implements SortUtil.Sort { 96#aG h>  
p|0ZP6!|  
private static int MAX_STACK_SIZE=4096; 2~B9 (|  
private static int THRESHOLD=10; VKb=)v[K  
/* (non-Javadoc) ]1)#Y   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )RCva3Ul  
*/ =6O<1<[y  
public void sort(int[] data) { opIbs7k-  
int[] stack=new int[MAX_STACK_SIZE]; w l#jSj%pd  
QLLMSa+! \  
int top=-1; Ha41Wn'tZ  
int pivot; (k$KUP  
int pivotIndex,l,r; o,yZ1"  
/D~MHO{  
stack[++top]=0; ]!'}{[1}  
stack[++top]=data.length-1; 0\KDa$ '1k  
v/G)E_  
while(top>0){ BenUyv1d  
int j=stack[top--]; o |"iW" +  
int i=stack[top--]; ^&!iqK2o  
[~5<['G  
pivotIndex=(i+j)/2; t 2Y2v2 J  
pivot=data[pivotIndex]; I&Z+FL&@f  
OhW o  
SortUtil.swap(data,pivotIndex,j); L|y 9T {s  
XGcl9FaO}  
file://partition Mh@RO|F  
l=i-1; LXq0hI  
r=j; S4C4_*~Vd  
do{ =u<jxV9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q]rqFP0C  
SortUtil.swap(data,l,r); e13' dCG  
} ZxoAf;U~  
while(l SortUtil.swap(data,l,r); AYHefAF<w  
SortUtil.swap(data,l,j); VlFhfOR6t  
3R?6{.  
if((l-i)>THRESHOLD){ shuoEeoo  
stack[++top]=i; r"$~Gg.%(  
stack[++top]=l-1; kJNu2S  
} VK[`e[.C  
if((j-l)>THRESHOLD){ ,cFBLj(@  
stack[++top]=l+1; Xf%wW[~  
stack[++top]=j; zL=PxFw0  
} i~ITRi@  
7*C>4Gs  
} W%P$$x5&  
file://new InsertSort().sort(data); <7*d2  
insertSort(data); W{X5~w(  
} cL+bMM$4r~  
/** C+vk9:"  
* @param data Xmv^O  
*/ @$R^-_m  
private void insertSort(int[] data) { \rSofn#c  
int temp; uZXG"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \}:;kO4f  
} I*EHZctH  
} |'!9mvt=  
} M d.^r5r  
cNG`-+U'  
} /|WBk}  
!f01.Tq8  
归并排序: +z O.|`+  
|wkUnn4UB8  
package org.rut.util.algorithm.support; a~w l D.P  
0NMmN_Lr  
import org.rut.util.algorithm.SortUtil; Jl-:@[;  
,r,$x4*  
/** LB/1To  
* @author treeroot 8],tGMu  
* @since 2006-2-2 q{2 +Inf#:  
* @version 1.0 -`ss7j&b3  
*/ Co^GsUJ  
public class MergeSort implements SortUtil.Sort{ LNOz.2fr>  
-:|t^RM;FT  
/* (non-Javadoc) 4Ixu%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h: Hpz  
*/ 4|/=]w  
public void sort(int[] data) { xF8 8'p'  
int[] temp=new int[data.length]; Ry`Y +  
mergeSort(data,temp,0,data.length-1); 6fV;V:1{  
} ^+u/Lw&  
2yPF'Q7u_.  
private void mergeSort(int[] data,int[] temp,int l,int r){ @2/ xu  
int mid=(l+r)/2; n}3fItSJ  
if(l==r) return ; y1t,i. [  
mergeSort(data,temp,l,mid); bq"dKN`  
mergeSort(data,temp,mid+1,r); {(_>A\zi  
for(int i=l;i<=r;i++){ 5uO.@0  
temp=data; ]}d.h!`<)  
} k[8{N  
int i1=l; C7_nA:Rc  
int i2=mid+1; |`Q2K9'4bL  
for(int cur=l;cur<=r;cur++){ O>/& -Wk=  
if(i1==mid+1) ~pPj   
data[cur]=temp[i2++]; Y~P* !g  
else if(i2>r) [_1K1i"m  
data[cur]=temp[i1++];  li  
else if(temp[i1] data[cur]=temp[i1++]; `Oe"s_O#  
else *ulkqpO  
data[cur]=temp[i2++]; ;{Tf:j'g  
} }HxC ~J"  
} ]?UK98uS\A  
JqP~2,T  
} 2<TpNGXM_  
U$EQeb  
改进后的归并排序: ]_mcJ/6:  
gmdA1$c  
package org.rut.util.algorithm.support; ,`U'q|b  
s/0~!0  
import org.rut.util.algorithm.SortUtil; &e;GoJ  
8=WX`*-uH  
/** UsnIx54D3  
* @author treeroot de,4M s!%  
* @since 2006-2-2 B<!WAw+  
* @version 1.0 M:R|hR{=*  
*/ e<duD W$X  
public class ImprovedMergeSort implements SortUtil.Sort { r%vO^8FQ  
*9|*21  
private static final int THRESHOLD = 10; gF~#M1!!  
vhL/L?NB$  
/* 7qEc9S@  
* (non-Javadoc) 04@?Jb1*  
* f1 Zj:3e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /m8&E*+T1  
*/ VZCCMh-  
public void sort(int[] data) { K yDPD'  
int[] temp=new int[data.length]; yN9setw*,M  
mergeSort(data,temp,0,data.length-1); a"whg~  
} e8VtKVcY  
R[f@g;h  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9 $ Ud\   
int i, j, k; LHHDD\X   
int mid = (l + r) / 2; c-=z<:Kf  
if (l == r) Mo0pN\A}h  
return; ` l}+BI`4  
if ((mid - l) >= THRESHOLD) BB3wG*q  
mergeSort(data, temp, l, mid); <iN xtD0  
else \) vI-  
insertSort(data, l, mid - l + 1); ;)'  
if ((r - mid) > THRESHOLD) }J(o!2.  
mergeSort(data, temp, mid + 1, r); 9y`Vg  
else CkEbSa<)hK  
insertSort(data, mid + 1, r - mid); r"=6s/q7  
;Ff5ooL{  
for (i = l; i <= mid; i++) { nPj &a  
temp = data; &0JCZ /e  
} nx|b9W<  
for (j = 1; j <= r - mid; j++) { "XWO#,Ue  
temp[r - j + 1] = data[j + mid]; zz1]6B*eX  
} 1D2Yued  
int a = temp[l]; T )"U q  
int b = temp[r]; eWU@ @$9  
for (i = l, j = r, k = l; k <= r; k++) { 7cly{U"  
if (a < b) { <BhNmEo)2  
data[k] = temp[i++]; E2yL9]K2  
a = temp; =6< Am  
} else { t[HA86X  
data[k] = temp[j--]; %C~LKs5oH  
b = temp[j]; #uCE0}N@  
} Rd>PE=u  
} V^qkHm e  
} .;jp2^  
m$80D,3  
/** 5<mGG;F  
* @param data sX|bp)Nw  
* @param l 8mv}-;  
* @param i 92 =huV  
*/ fSw6nEXn  
private void insertSort(int[] data, int start, int len) { 8 CCA}lOG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); YZQF*fj  
} ]hjA,p@Q  
} n}toUqUnk\  
} ,,CheRO  
} &b!|Y  
B| .8+Q  
堆排序: `;v>fTcy  
prCr"y` M  
package org.rut.util.algorithm.support; <v[UYvZvY  
Ncsk~=[  
import org.rut.util.algorithm.SortUtil; q+?>shqsZ  
hWfC"0  
/** f1 TYQ?e  
* @author treeroot CZ}%\2>-v  
* @since 2006-2-2 g"|Z1iy|9  
* @version 1.0 6;%Ajx  
*/ \. _TOE9L  
public class HeapSort implements SortUtil.Sort{ OVhtU+r  
Olltu"u  
/* (non-Javadoc) x5"F`T>Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LL7un_EC  
*/ -:!FQ'/7E  
public void sort(int[] data) { Xi"<'E3_  
MaxHeap h=new MaxHeap(); #xe-Yw1!  
h.init(data); HG:9yP<,o  
for(int i=0;i h.remove(); @&}~r  
System.arraycopy(h.queue,1,data,0,data.length); {+^qm8n  
} Fa^I 1fk  
OYayTKxN  
private static class MaxHeap{ iK=SK3)vR  
;vLg4k  
void init(int[] data){ 4j VFzO%.  
this.queue=new int[data.length+1]; X2S:"0?7  
for(int i=0;i queue[++size]=data; H*VZ&{\7  
fixUp(size); >TB Rp,;r  
} m8C scC Z}  
} 1 -:{&!  
_MST8  
private int size=0; p!RyxB1.|  
$hE,BeQ  
private int[] queue; 4}MZB*);0  
2%gLq  
public int get() { VVVw\|JB>  
return queue[1]; P DtLJt$  
} {j4J(dtO  
qe_59'K  
public void remove() { <WGx 6{  
SortUtil.swap(queue,1,size--); {3R?<ET]mt  
fixDown(1); 3*;S%1C^  
} |8s45g>  
file://fixdown \o=YsJ8U  
private void fixDown(int k) { +y\mlfJ.-b  
int j; Y.}8lh eH  
while ((j = k << 1) <= size) { q:X&)f  
if (j < size %26amp;%26amp; queue[j] j++; 3tAX4DnYrq  
if (queue[k]>queue[j]) file://不用交换 MaQ`7U5 |e  
break; v''F\V )  
SortUtil.swap(queue,j,k); 5"o)^8!>  
k = j; uszH1@g'  
} siK:?A@4D  
} fkW TO"f-  
private void fixUp(int k) { @l^BW*BCo  
while (k > 1) { z4iZE*ZS  
int j = k >> 1; ~ $QNp#dq  
if (queue[j]>queue[k]) HI*j6H?\  
break; $ ";NS6 1  
SortUtil.swap(queue,j,k); G@I/Dy  
k = j;  :bBMy\(u  
} KQv97#n1  
} Ub9p&=]h  
`zBQ:_3J_  
} > cM}M=4s  
ewD=(yr  
} ds|L'7  
<|R`N)AV;  
SortUtil: ~n )<L7  
zv[pfD7a  
package org.rut.util.algorithm; $9m>(b/;n  
^s[OvJb  
import org.rut.util.algorithm.support.BubbleSort; .GH#`j  
import org.rut.util.algorithm.support.HeapSort; R<FW?z*  
import org.rut.util.algorithm.support.ImprovedMergeSort; D8,V'n>L  
import org.rut.util.algorithm.support.ImprovedQuickSort; d-BUdIz  
import org.rut.util.algorithm.support.InsertSort; l7M![Ur  
import org.rut.util.algorithm.support.MergeSort; [Adkj  
import org.rut.util.algorithm.support.QuickSort; QH.zsqf(  
import org.rut.util.algorithm.support.SelectionSort; =abBD   
import org.rut.util.algorithm.support.ShellSort; dxAP7v  
_hbTxyj  
/** qsTB)RdjP%  
* @author treeroot .X)TRD#MW  
* @since 2006-2-2 9]^ CDL  
* @version 1.0 JC}oc M j0  
*/ Y9_OkcW)  
public class SortUtil { ji :E  
public final static int INSERT = 1; wS%aN@ay3  
public final static int BUBBLE = 2; H% "R _[+  
public final static int SELECTION = 3; m#kJ((~  
public final static int SHELL = 4; [23F0-p  
public final static int QUICK = 5; EXD Qr'"  
public final static int IMPROVED_QUICK = 6; f1}am<  
public final static int MERGE = 7; 6l|,J`G  
public final static int IMPROVED_MERGE = 8; Sx|)GTJJ|-  
public final static int HEAP = 9; )Fw{|7@N  
xKW`m  
public static void sort(int[] data) { [>y0Xf9^  
sort(data, IMPROVED_QUICK); 4~YPLu  
} rbD}fUg  
private static String[] name={ +M %zOX/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G" &yE.E5  
}; %\ef Mhn  
ghu8Eg,Y  
private static Sort[] impl=new Sort[]{ NP_b~e6O=  
new InsertSort(), =n7 3bm  
new BubbleSort(), etk@ j3#  
new SelectionSort(), 0X'2d  
new ShellSort(), ;\[ el<Y)s  
new QuickSort(), Ja(>!8H>@  
new ImprovedQuickSort(), [sF z ;Py]  
new MergeSort(), oiL^$y/:;z  
new ImprovedMergeSort(), NL76 jF  
new HeapSort() 5Dv ;-G;  
}; h%yw'?s  
T~" T%r  
public static String toString(int algorithm){ c2iPm9"eh  
return name[algorithm-1]; C\WU<!  
} ;DXcEzV  
IS9}@5`'  
public static void sort(int[] data, int algorithm) { $&l} ABn  
impl[algorithm-1].sort(data); 1P1"xT  
} ~Vf+@_G8`  
M^twD*  
public static interface Sort { *6b$l.Vs  
public void sort(int[] data); *4<Kz{NF  
} _Boe"   
Sy?O(BMo  
public static void swap(int[] data, int i, int j) { +_h1JE_}D  
int temp = data; L dyTB@  
data = data[j]; %:~LU]KX  
data[j] = temp; 7[}K 2.W.  
} Y::I_6[eV  
} 5\6S5JyIL  
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