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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。 )Xice=x9  
插入排序: O5A]{ W  
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package org.rut.util.algorithm.support; s mqUFo  
?fNUmk^A<  
import org.rut.util.algorithm.SortUtil; G-Zn-I  
/** TZa LB}4  
* @author treeroot t7,**$ST  
* @since 2006-2-2 k~=P0";  
* @version 1.0 _ IlRZ}f  
*/ 9oj0X>| 1  
public class InsertSort implements SortUtil.Sort{ nSq$,tk(  
Bh()?{q  
/* (non-Javadoc) GCp90  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3tCT"UvTD  
*/ v'SqH,=d  
public void sort(int[] data) { }C5Fvy6uz  
int temp; /_tN&[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j`_tb   
} <E7y:%L[Go  
} ~!'T!g%C  
} F-2Q3+7$  
``Rg0o  
} ^2"w5F  
%WtF\p  
冒泡排序: x=V3_HI/}  
,sltB3f  
package org.rut.util.algorithm.support; P$"s*otr  
b:x*Hjf  
import org.rut.util.algorithm.SortUtil; kvam`8SeL  
/1?{,Das=  
/** `k3sl 0z%  
* @author treeroot BqDOo(%1)  
* @since 2006-2-2 Hh &s.ja  
* @version 1.0 L^L.;1  
*/ >,n K  
public class BubbleSort implements SortUtil.Sort{ N7Kkz /  
E=qfI>2U&  
/* (non-Javadoc) /!W',9ua6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L}>ts(!q&  
*/ K#dG'/M|Pb  
public void sort(int[] data) { @mEB=X(-l=  
int temp; {hx=6"@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (YHK,aC>u  
if(data[j] SortUtil.swap(data,j,j-1); eyG[1EEU  
} ]O&yy{yYK  
} h BzZJ/jn  
} ab*O7v  
} W(PNw2  
u\=yY.   
} &&te(DC\  
pwo @ S"  
选择排序: - 4B&{P  
h]k1vp)Q y  
package org.rut.util.algorithm.support; ^6 \@$   
Uk4G9}I  
import org.rut.util.algorithm.SortUtil; x6 h53R  
Gvc/o$_  
/** b`|,rfq^AZ  
* @author treeroot G[Jz(/yNH  
* @since 2006-2-2 VQn]"G( `  
* @version 1.0 j15t8du&O  
*/ 36yIfC,  
public class SelectionSort implements SortUtil.Sort { FK;2u $:  
!FeNx*31i  
/* y@dTdR2Wc  
* (non-Javadoc) 9+:<RFJ  
* M|qJZ#{4>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zu/1:8x  
*/ Z xR  
public void sort(int[] data) { Qz([\Xx:  
int temp; ;%O>=m'4  
for (int i = 0; i < data.length; i++) { = '<*mT<  
int lowIndex = i; Z%7X"w  
for (int j = data.length - 1; j > i; j--) { -m Sf`1l0  
if (data[j] < data[lowIndex]) { [.>g.p,;  
lowIndex = j; KwhATYWQb  
} iLf* m~Q  
} USbFUHdDc  
SortUtil.swap(data,i,lowIndex); -7A2@g  
} laaoIL^  
} &u~%5;  
-_BjzA|  
} .$ 5*v  
<Sp>uhet1  
Shell排序: Z8WBOf*~e  
y(jd$GM|  
package org.rut.util.algorithm.support; iU4Z9z!  
poXT)2^)  
import org.rut.util.algorithm.SortUtil; MMf_  
Io<L! =>  
/** 9D51@b6k  
* @author treeroot ~lH2# u>g  
* @since 2006-2-2 =p#:v  
* @version 1.0 ie<m)  
*/ Ve t<,;Te  
public class ShellSort implements SortUtil.Sort{ dt(Lp_&v  
(0zYS_m A  
/* (non-Javadoc) l#|M.V6G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &F|Wk,y  
*/ qQCds}<w  
public void sort(int[] data) { Z/b,aZhB  
for(int i=data.length/2;i>2;i/=2){ \$2zF8  
for(int j=0;j insertSort(data,j,i); Xvn \~Vr  
} 3y-P-NI~=  
} }62Q{>`  
insertSort(data,0,1); $"`e^J9!!  
} c.h_&~0qf  
.,gVquqMY  
/** :/i13FQ  
* @param data ~{!,ZnO*  
* @param j j4Y] 8  
* @param i qX*Xo[Xp  
*/ ;Dc\[r  
private void insertSort(int[] data, int start, int inc) { o^<W3Z  
int temp;  fG|+ !  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  Rlx  
} _)^`+{N<  
} ;e\K8*o  
} IYB;X  
}r:8w*4 7  
} ~D! Y] SK  
8iN@n8O  
快速排序: ,pVq/1  
+fG~m:E  
package org.rut.util.algorithm.support; DWu~%U8  
"nC=.5/$  
import org.rut.util.algorithm.SortUtil; /{nZ I_v#  
r }Nq"s<  
/** wI2fCq(a0  
* @author treeroot 2Q[q)u  
* @since 2006-2-2 `}*jjnr"  
* @version 1.0 )-S;j)(+  
*/ 8rSu,&<  
public class QuickSort implements SortUtil.Sort{ d4A3DTW  
zM<yd#`yt8  
/* (non-Javadoc) n_-k <3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y~I6ee,\  
*/ =8x-+u5}rK  
public void sort(int[] data) { M pLn)  
quickSort(data,0,data.length-1); .;NoKO7)  
} ??XtN.]7  
private void quickSort(int[] data,int i,int j){ wm/>_  
int pivotIndex=(i+j)/2; X$ 76#x  
file://swap )LE#SGJP  
SortUtil.swap(data,pivotIndex,j); _<l9j;6  
{aWfD XB1  
int k=partition(data,i-1,j,data[j]); Z%I9:(  
SortUtil.swap(data,k,j); Axx{G~n![  
if((k-i)>1) quickSort(data,i,k-1); jp+#N pH  
if((j-k)>1) quickSort(data,k+1,j); <^B!.zQ  
LZrkFkiC  
} (JeRJ4  
/** _ +A$6l  
* @param data 8^"P'XQ  
* @param i *wK7qS~VB2  
* @param j o1 @. <Q+}  
* @return }7/Ob)O  
*/ &^@IAjxn  
private int partition(int[] data, int l, int r,int pivot) { r;OE6}L>  
do{ aKkY)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YX 19QG%  
SortUtil.swap(data,l,r); He)dm5#fg  
} UQ)7uYQ5  
while(l SortUtil.swap(data,l,r); ;X[23A{  
return l; R=s^bYdoy  
} v9vY#W  
u"M^qRhD  
} -vBk,;^>  
({p @Ay  
改进后的快速排序: wvg>SfV,e  
($:JI3e[;  
package org.rut.util.algorithm.support; =/F\_/Xw  
S[o R q  
import org.rut.util.algorithm.SortUtil; xm}`6B^f  
^W<uc :L7  
/** 8rgNG7d  
* @author treeroot K6z-brvw "  
* @since 2006-2-2 VWcR@/3  
* @version 1.0 1F }mlyS  
*/ E 9n7P'8  
public class ImprovedQuickSort implements SortUtil.Sort { %#b+ =J  
^tFgkzXm  
private static int MAX_STACK_SIZE=4096; YM]ZL,8  
private static int THRESHOLD=10; NpF}~$2  
/* (non-Javadoc) A49HYX-l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }-ysP$  
*/ zj9aaZ}  
public void sort(int[] data) { XW9 [VUW~  
int[] stack=new int[MAX_STACK_SIZE]; @awN*mO  
`(?x@Y>.Ht  
int top=-1; t"Djh^=y  
int pivot; RVb}R<yU+  
int pivotIndex,l,r; "M5&&\uT  
s7TV@Y)  
stack[++top]=0; EL-1o0 2-  
stack[++top]=data.length-1; cE0Kvqe`  
xT1{O`  
while(top>0){ ;yK:.Vg  
int j=stack[top--]; ~",,&>#[K  
int i=stack[top--]; WgQ6EV`  
za@`,Yq  
pivotIndex=(i+j)/2; nFfwVqV  
pivot=data[pivotIndex]; S vR? nN|  
S[W|=(f9  
SortUtil.swap(data,pivotIndex,j); $N1UEvC%Q  
+R?d6IjH  
file://partition ;l6tZ]-"  
l=i-1; )51H\o  
r=j; |);-{=.OdQ  
do{ bbO1`b-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Gd 5J<K  
SortUtil.swap(data,l,r); 4?{e?5)  
} >O&:[CgEF  
while(l SortUtil.swap(data,l,r); BnLWC  
SortUtil.swap(data,l,j); s8<)lO<SV.  
g+98G8 R  
if((l-i)>THRESHOLD){ 13nXvYo'  
stack[++top]=i; *@,>R6)jI  
stack[++top]=l-1; ) Pdl[+a  
} ^.9I[Umua  
if((j-l)>THRESHOLD){ 7!E?(3$#"  
stack[++top]=l+1; e.|_=Gd2/  
stack[++top]=j; =pP0d vn  
} ,,>b=r_r&  
)} H46  
} 0FV?By  
file://new InsertSort().sort(data); 4F+n`{~  
insertSort(data); &m6x*i-5\f  
} R)w|bpW  
/** fscAG\>8  
* @param data 6DG:imGl  
*/ bvM a|;f1  
private void insertSort(int[] data) { |[VtYV _{  
int temp; B|Rnh;B-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @{Q[M3l  
} t zhkdG  
} =U5lPsiv,3  
} ='0f#>0Q  
t4H@ZvAH0  
} siHS@S  
e:Zc-  
归并排序: #w4= kWJ[  
lr[a~ca\  
package org.rut.util.algorithm.support; P/'~&*m-  
l*|^mx^Q  
import org.rut.util.algorithm.SortUtil; JxP=[>I  
aNpeePF)z  
/** w`vJE!4B  
* @author treeroot ;u'mSJI'  
* @since 2006-2-2 o Ohm`7iy  
* @version 1.0 ~R]E=/m|  
*/ >69+e+|I  
public class MergeSort implements SortUtil.Sort{ tj ,*-).4%  
@83h/Wcxd  
/* (non-Javadoc) ,R1`/aRy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HN\Zrb  
*/ eiJO;%fl>l  
public void sort(int[] data) { W%f:+s}cI  
int[] temp=new int[data.length]; 6EhRCl  
mergeSort(data,temp,0,data.length-1); zn T85#]\@  
} X3DXEeBEL  
JrTSu`S('  
private void mergeSort(int[] data,int[] temp,int l,int r){ kyQ%qBv ^  
int mid=(l+r)/2; sD$ \!7:b  
if(l==r) return ; \#[W8k<Z  
mergeSort(data,temp,l,mid); {_1^ GIIS  
mergeSort(data,temp,mid+1,r); #dDsI]E )  
for(int i=l;i<=r;i++){ M#JOX/  
temp=data; : z^ p s0  
} Sq&*K9:z  
int i1=l; TR,,=3n  
int i2=mid+1; (XJehdB0  
for(int cur=l;cur<=r;cur++){ }(AUe5aw`G  
if(i1==mid+1) jK#y7E  
data[cur]=temp[i2++]; sB_o HUMH6  
else if(i2>r) #D3e\(  
data[cur]=temp[i1++]; ]<q{0.  
else if(temp[i1] data[cur]=temp[i1++]; />XfK,c-  
else $EbxV"b+  
data[cur]=temp[i2++]; J.:"yK""  
} +vkqig  
} EH"iK2n\9  
`LnLd;Z  
} xTX\% s|  
-[s*R%w  
改进后的归并排序: p2PD';"  
-9/YS  
package org.rut.util.algorithm.support; []0`>rVq  
j4le../N  
import org.rut.util.algorithm.SortUtil; fcb:LPk;  
3O<<XXar  
/** qFW- ~T  
* @author treeroot N{`-&8q;K  
* @since 2006-2-2 ?rWqFM:hb  
* @version 1.0 !h7`W*::  
*/ Ly\$?3 h  
public class ImprovedMergeSort implements SortUtil.Sort { RMDs~  
m?xzx^xs/  
private static final int THRESHOLD = 10; !,Wd$U K  
7|T<dfQk  
/* %96JH YcX  
* (non-Javadoc) {$>*~.Wu  
* OekcU% C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kwfrh?  
*/ WUAjb,eo  
public void sort(int[] data) { knpb$eX4  
int[] temp=new int[data.length]; X#5dd.RR  
mergeSort(data,temp,0,data.length-1); _< 69d  
} "*#$$e53A  
x2/|i? ZO  
private void mergeSort(int[] data, int[] temp, int l, int r) { a2UER1Yp"  
int i, j, k; TclZdk]%T  
int mid = (l + r) / 2; g8mVjM\B;  
if (l == r) [+gX6  
return; P$2J`b[H$  
if ((mid - l) >= THRESHOLD) 2Y&z}4'j  
mergeSort(data, temp, l, mid); ,]~iIoTi  
else 6-gxba  
insertSort(data, l, mid - l + 1); 79uL"N;  
if ((r - mid) > THRESHOLD) S D] d/|y  
mergeSort(data, temp, mid + 1, r); IoJkM-^H&)  
else 'Y6{89y  
insertSort(data, mid + 1, r - mid); 1[J&^@t[h6  
-hL8z$}  
for (i = l; i <= mid; i++) { 5|x FY/%  
temp = data; G-Z_pGer^  
} 5wRDH1z@{  
for (j = 1; j <= r - mid; j++) { >9F,=63A  
temp[r - j + 1] = data[j + mid]; DyG3|5s1R  
} 8;p6~&).C~  
int a = temp[l]; 17H_>a\`  
int b = temp[r]; 1 @E<5rp o  
for (i = l, j = r, k = l; k <= r; k++) { 1;SW% \M  
if (a < b) { ;f[Ki$7  
data[k] = temp[i++]; 6*kY7  
a = temp; Mc~(S$FU$  
} else {  nq8mzI  
data[k] = temp[j--]; "Z }'u2%\m  
b = temp[j]; l+ bP48  
} }{:H0)H*  
} f&H):.  
} ~y_TT5+ 3  
+uKlg#wqc  
/** :74^?  
* @param data Mmbb}(<  
* @param l SYB } e  
* @param i %#02Z%?%  
*/ bU=!~W5  
private void insertSort(int[] data, int start, int len) { E92dSLhs5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <y6M@(b  
} :r:5a(sq  
}  o9#  
} !V Zl<|  
} :Py/d6KK  
L/<^uO1  
堆排序: {08UBnR  
x<P$$G/  
package org.rut.util.algorithm.support; s8{3~Hv  
+G? 4Wc1  
import org.rut.util.algorithm.SortUtil; "Hg.pDNZ  
:bW}*0b-  
/** ]Tf.KUm  
* @author treeroot mDvZ 1aj  
* @since 2006-2-2 KZ`d3ad  
* @version 1.0 {_ww1'|A  
*/ G#N h)ff  
public class HeapSort implements SortUtil.Sort{ 6fY(u7m|p  
* ?rw'  
/* (non-Javadoc) 4bhm1Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *r?g&Vw$m  
*/ 4NQS'*%D  
public void sort(int[] data) { E4HG`_cWb  
MaxHeap h=new MaxHeap(); NV9D;g$Y  
h.init(data); J Q%e'  
for(int i=0;i h.remove(); V(=~p[  
System.arraycopy(h.queue,1,data,0,data.length); -/B}XN W  
} CP|N2rb  
"\vEi &C  
private static class MaxHeap{ 5sM-E>8G^{  
' ,a'r.HJH  
void init(int[] data){ WsL*P .J  
this.queue=new int[data.length+1]; d&w g\"E  
for(int i=0;i queue[++size]=data; O=MO M  
fixUp(size); be$wG O=Ts  
} G! zV=p  
} %TPnC'2  
Zu_m$Mx  
private int size=0; xFHc+m' m~  
1V+a;-?  
private int[] queue; v~?d7p {  
z\oq b) a  
public int get() { "7JO~T+v  
return queue[1]; S@z$,}Yc`<  
} d\3L.5]X  
xQ* U9Wt;T  
public void remove() { )T(xQ2&r4  
SortUtil.swap(queue,1,size--); R4_4FEo  
fixDown(1); w-AF5%gX  
} m%+W{N4Wb  
file://fixdown 0 4x[@f`  
private void fixDown(int k) { *"P :ySA  
int j; Cl6y:21]K  
while ((j = k << 1) <= size) { 1 [[` ^v  
if (j < size %26amp;%26amp; queue[j] j++; u<]-%ha$  
if (queue[k]>queue[j]) file://不用交换 TCX*$ac"  
break; &0It"17Ej  
SortUtil.swap(queue,j,k); @7" xDgA  
k = j; yj `b-^$?  
} M9_ y>N[0  
} mF%>pj&b  
private void fixUp(int k) { H(lq=M0~  
while (k > 1) { ..Zuy|?w  
int j = k >> 1; 5:hajXd  
if (queue[j]>queue[k]) aM9^V MOb  
break; \%KJ +PJ  
SortUtil.swap(queue,j,k); ' 6Ybf  
k = j; 1wW8D>f]K  
} x9a*^l  
} %Fa/82:- "  
R N5\,>+  
} ]-bA{@tP.  
.LIEZ^@  
} ,LSF@1|Fx  
Agl5[{]E  
SortUtil: (WVN*OR?  
" nq4!  
package org.rut.util.algorithm; m[LIM}Gu  
!<h*\%;  
import org.rut.util.algorithm.support.BubbleSort; (Vf&,b@U_  
import org.rut.util.algorithm.support.HeapSort; T8GxoNm  
import org.rut.util.algorithm.support.ImprovedMergeSort; c;xL.  
import org.rut.util.algorithm.support.ImprovedQuickSort; d}EGI  
import org.rut.util.algorithm.support.InsertSort; z;zy k  
import org.rut.util.algorithm.support.MergeSort; sw[1T_S>  
import org.rut.util.algorithm.support.QuickSort; L oe!@c  
import org.rut.util.algorithm.support.SelectionSort; o*_[3{FU  
import org.rut.util.algorithm.support.ShellSort; ^ W eE%"  
al F*L  
/** X)e6Y{vO  
* @author treeroot N0O8to}V  
* @since 2006-2-2 glH&v8  
* @version 1.0 6^H64jM  
*/ 2IFri|;-eb  
public class SortUtil { ^' lx5+-  
public final static int INSERT = 1; e#:.JbJ:D  
public final static int BUBBLE = 2; uH^/\  
public final static int SELECTION = 3; .</d$FM JE  
public final static int SHELL = 4; c+f~>AaI  
public final static int QUICK = 5; #|v\UJ:Pf/  
public final static int IMPROVED_QUICK = 6; L}h?nWm8  
public final static int MERGE = 7; ~%qHJ4C  
public final static int IMPROVED_MERGE = 8; _ "&b%!  
public final static int HEAP = 9; Uq<c+4)5  
2o] V q  
public static void sort(int[] data) { .>zXz%p  
sort(data, IMPROVED_QUICK); cWl  
} B# |w}hj  
private static String[] name={ i~@e}=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y1p^ &9 U  
}; "diF$Lj  
`J|bGf#  
private static Sort[] impl=new Sort[]{ |#D3~au   
new InsertSort(), >2x[ub%$L  
new BubbleSort(), Gw:8-bxS  
new SelectionSort(), WNrgqyM  
new ShellSort(), XpJT/&4  
new QuickSort(), (@B gsY  
new ImprovedQuickSort(), E y1mlW  
new MergeSort(), 1&ukKy,[  
new ImprovedMergeSort(), g>12!2}  
new HeapSort() x~j>Lvw L  
}; s]#D;i8  
c/DB"_}!a  
public static String toString(int algorithm){ 0.'$U}#b  
return name[algorithm-1]; z2vrV?:  
} OIGu`%~js  
-GLI$_lLF  
public static void sort(int[] data, int algorithm) { n2zJ'  
impl[algorithm-1].sort(data); 26B]b{Iz{  
} =H%c/Jty  
v#q7hw=  
public static interface Sort { -Ob'/d5&  
public void sort(int[] data); i^eU!^KF  
} #f0J.)M  
bX6eNk-L  
public static void swap(int[] data, int i, int j) { 2 DJs '"8  
int temp = data; 7m~.V[l1  
data = data[j]; \XFF(  
data[j] = temp; +)k%jIi!  
} =e=sK'NvD  
} {'C PLJ{R  
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