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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。 8hww({S2  
插入排序: 6rE8P#  
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package org.rut.util.algorithm.support; fGe ie m  
w]xr ~D+  
import org.rut.util.algorithm.SortUtil; `*Wg&u  
/** \25EI]  
* @author treeroot <n k/w5nKL  
* @since 2006-2-2 Q$p3cepsK  
* @version 1.0 S3HyB b  
*/ PyI"B96gz  
public class InsertSort implements SortUtil.Sort{ Qo3Enwap=  
"\+\,C  
/* (non-Javadoc) X*7VDt=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T-4dD  
*/ Xajt][  
public void sort(int[] data) { V_n tS& 2o  
int temp; <7L-25 =  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YuJ{@"H  
} }!|$;3t+c  
} Cy5iEI#  
} xwHE,ykE  
c7WOcy@M  
} bcxR7<T,"9  
MJH>rsTQ  
冒泡排序: ^Q+z^zlC  
|942#rM  
package org.rut.util.algorithm.support; -QBM^L  
;K4uu<e \  
import org.rut.util.algorithm.SortUtil; 6o(.zk`d  
/t2H%#v{  
/** *Utx0Me  
* @author treeroot Are0Nj&?  
* @since 2006-2-2 \CS4aIp  
* @version 1.0 j+gh*\:q  
*/ S+^hK1jL  
public class BubbleSort implements SortUtil.Sort{ m*i,|{UZ  
7*WO9R/  
/* (non-Javadoc) F8/n;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5'w&M{{9  
*/ VyNU<}  
public void sort(int[] data) { Es\J%*\u  
int temp; a^[s[j#^,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h\~!!F  
if(data[j] SortUtil.swap(data,j,j-1); +;oR_]l  
} }6{00er  
} 8f%OPcr&  
} WOeLn[  
} 1L?W+zMO  
8A-*MU`+  
} 9.#")%_p  
#8BI`.t)j  
选择排序: X_Pbbx_j  
z-sq9Qp&x  
package org.rut.util.algorithm.support; GyFA1%(o  
\~U:k4  
import org.rut.util.algorithm.SortUtil; e~R_bBQ0  
a6It1%a+  
/** MFWkJbZV  
* @author treeroot y;P%=M P  
* @since 2006-2-2 i2[8^o`_  
* @version 1.0 [`bK {Dq2  
*/ Y OvhMi  
public class SelectionSort implements SortUtil.Sort { 2jkma :$'  
a`eb9o#  
/* Bw[#,_  
* (non-Javadoc) zQ u9LN  
* #%#N.tB 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I\[z(CHg@  
*/ ?UeV5<TewS  
public void sort(int[] data) { i`iR7UmHeR  
int temp; q,;wD1_wG  
for (int i = 0; i < data.length; i++) { 3e\IRF xzb  
int lowIndex = i; ^\yz`b(A0  
for (int j = data.length - 1; j > i; j--) { ?Ho>  
if (data[j] < data[lowIndex]) { EyBTja(4  
lowIndex = j; 3mg:9]X9  
} [?$tu%Q(Z  
} 23Q 88z   
SortUtil.swap(data,i,lowIndex); E7B?G3|z3  
} s8' ;4z  
} I'2I'x\M  
8"V1h72vcW  
} Y%r>=Jvu6  
qIh9? |`U  
Shell排序: `ah"Q;d$  
N6%L4v8-}X  
package org.rut.util.algorithm.support; cBZJ  
3+iryW(\  
import org.rut.util.algorithm.SortUtil; K(TejW#  
0]nveC$  
/** ? 5OK4cR  
* @author treeroot yGX5\PSo  
* @since 2006-2-2 Qz$nWsD  
* @version 1.0 S5UQ   
*/ Y^8'P /A  
public class ShellSort implements SortUtil.Sort{ WU,b<PU &  
axN\ZXU  
/* (non-Javadoc) C!6D /S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |=:hUp Jp  
*/ r;wm`(e  
public void sort(int[] data) { Z:2%gU&W  
for(int i=data.length/2;i>2;i/=2){ )?6%d  
for(int j=0;j insertSort(data,j,i); ={o)82LV  
} lB#7j  
} 5as5{"l  
insertSort(data,0,1); 2{oQ  
} oMoco tQ;$  
z('t#J!b  
/** |~rKDc  
* @param data {yd(n_PqY  
* @param j qc' ;<  
* @param i HTm`_}G9  
*/ ~K(mt0T )  
private void insertSort(int[] data, int start, int inc) { #n|eq{fkK  
int temp; h$%h w+"4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n+2>jY  
} z*cKH$':  
} )gAqWbkB  
} Kt/:caD  
RfT)dS+rAh  
} y,qn9  
LIyb+rH#yg  
快速排序: wk1/&  
WB `h)  
package org.rut.util.algorithm.support; M<Dvhy[  
t=jG$A  
import org.rut.util.algorithm.SortUtil; ^U,Dx  
gplrJaH@  
/** i#*lK7  
* @author treeroot 7[0CVWs,  
* @since 2006-2-2 4jjo%N  
* @version 1.0 }I18|=TB  
*/ J(P'!#z^  
public class QuickSort implements SortUtil.Sort{ DH4IF i>  
s;sr(34  
/* (non-Javadoc) 15Jc PDV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >?ec"P%vS/  
*/ {L7+lz  
public void sort(int[] data) { o/=61K8D  
quickSort(data,0,data.length-1); tOo\s&j  
} ogJ';i/o  
private void quickSort(int[] data,int i,int j){ ([7XtG/?  
int pivotIndex=(i+j)/2; \vS > jB  
file://swap z&jASL  
SortUtil.swap(data,pivotIndex,j); ~b4kV)[ q  
`-?`H>+OG  
int k=partition(data,i-1,j,data[j]); ;w._/  
SortUtil.swap(data,k,j); "}oo`+]Cq  
if((k-i)>1) quickSort(data,i,k-1); UoSc<h|  
if((j-k)>1) quickSort(data,k+1,j); 8~|v:qk  
VAe[x `  
} N0 mh gEA  
/** D/,(xWaT  
* @param data cu)B!#<!&  
* @param i us.IdG  
* @param j :X}Ie P  
* @return bwJluJ, E  
*/ 0+.<BOcW5  
private int partition(int[] data, int l, int r,int pivot) { Q~KzcB<  
do{ } na@gn  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S5YEz XG  
SortUtil.swap(data,l,r); iI &z5Q2  
} XdnpL$0  
while(l SortUtil.swap(data,l,r); E*s _Y  
return l; Zt9ld=T  
} 8m[o*E.4F  
]]y,FQ,r  
} _ G2)=yj]  
xP27j_*m>  
改进后的快速排序: $-s8tc(  
/wkrfYRs  
package org.rut.util.algorithm.support; MIN}5kc<  
O:imX>|u  
import org.rut.util.algorithm.SortUtil; a^Q ?K\c4N  
.*z$vl  
/** \c!e_rZ  
* @author treeroot #CW{y?=  
* @since 2006-2-2 #<#-Bv  
* @version 1.0 w?Cho</Xu  
*/ V0%a/Hi v  
public class ImprovedQuickSort implements SortUtil.Sort { J5z\e@?.0\  
>X=VPh8  
private static int MAX_STACK_SIZE=4096; /Kd'!lMuz  
private static int THRESHOLD=10; Y)#,6\=U  
/* (non-Javadoc) a :cfr*IsK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YtXd>@7  
*/ Oh,Xjel  
public void sort(int[] data) { +I}!)$/  
int[] stack=new int[MAX_STACK_SIZE]; 0sCWIGU W  
}j!C+i  
int top=-1; /)?qD  
int pivot; ?D(aky#cyc  
int pivotIndex,l,r; 5'<a,,RKu  
NSq29#  
stack[++top]=0; 'a:';hU3f  
stack[++top]=data.length-1; R0bgt2J  
FL&L$#X  
while(top>0){ <UTO\w%  
int j=stack[top--]; Zcg-i:@  
int i=stack[top--]; ,C:^K`k&  
*r7%'K{ C  
pivotIndex=(i+j)/2; 6]4=8! J  
pivot=data[pivotIndex]; 8m#y>`  
$I<\Yuy-M9  
SortUtil.swap(data,pivotIndex,j); D u_ ;!E  
yQ&C]{>TS  
file://partition Ht@5@(W]I  
l=i-1; *qxv"PptX  
r=j; itcM-?  
do{ #/\Zo &V8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fw a*|y;  
SortUtil.swap(data,l,r); ZS`9r16@b  
} ;q#Pl!*5  
while(l SortUtil.swap(data,l,r); GgE 38~A4  
SortUtil.swap(data,l,j); /J(~NGT  
l%qh^0  
if((l-i)>THRESHOLD){ by$mD_sr  
stack[++top]=i; rqKK89fD'  
stack[++top]=l-1; ^b^buCYw  
} n]>L"D,  
if((j-l)>THRESHOLD){ |3hNTH?  
stack[++top]=l+1; Ix~rBD9  
stack[++top]=j; mcs!A/]<  
} m\_v{1g  
' t^ r2N/  
} Ri*mu*r\}  
file://new InsertSort().sort(data); =Ew77  
insertSort(data); n;QFy5HB8  
} _:Jma  
/** [fs.D /  
* @param data S%wd Xe  
*/ j%':M  
private void insertSort(int[] data) { N(O* "1b  
int temp; r[#*..Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?KE:KV[Y  
} @ 0/EKWF  
} GC(QV}9z"  
} !LsIHDs4  
UMHFq-  
} b=SCyGxlZ5  
q 2;CvoF  
归并排序: Zm+GH^f'  
Hr \vu`p$  
package org.rut.util.algorithm.support; D4?cnwU  
JM53sx4&  
import org.rut.util.algorithm.SortUtil; 162Dj$  
&G?w*w_n  
/** ~ cI`$kJ  
* @author treeroot j9BcoEl:;  
* @since 2006-2-2 3ik~PgGoKQ  
* @version 1.0 }|nEbM]#  
*/ Jn9 {@??  
public class MergeSort implements SortUtil.Sort{ z+^9)wg9  
N37CAbw0  
/* (non-Javadoc) U? ;Q\=>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #E#@6ZomT  
*/ (^]3l%Ed  
public void sort(int[] data) { MOm+t]vq1  
int[] temp=new int[data.length]; z9v70 q  
mergeSort(data,temp,0,data.length-1); vOl3utu7  
} 2Tv W 6  
$F]*B `  
private void mergeSort(int[] data,int[] temp,int l,int r){ g'EPdE  
int mid=(l+r)/2; di<g"8  
if(l==r) return ; +;bZ(_ohG  
mergeSort(data,temp,l,mid); :*cd$s  
mergeSort(data,temp,mid+1,r); 6t'.4SR  
for(int i=l;i<=r;i++){ []?*}o5&>T  
temp=data; /74)c~.W  
} Gsz$H_  
int i1=l; ]}.|b6\  
int i2=mid+1; ^Of\l:q*  
for(int cur=l;cur<=r;cur++){ g``S SU  
if(i1==mid+1) c4bvJy8  
data[cur]=temp[i2++]; 7Oi<_b  
else if(i2>r) t&IWKu#  
data[cur]=temp[i1++]; >;}(? +|f  
else if(temp[i1] data[cur]=temp[i1++]; - <tTT  
else Dj3,SJ*x  
data[cur]=temp[i2++]; #fXy4iL l  
} %2^V.`0T  
} K1o&(;l8G  
"5<YN#  
} :zpT Gk8Z  
M" $g*j  
改进后的归并排序: IU"8.(;o  
ly@%1  
package org.rut.util.algorithm.support; x6vkd%fCj  
c]|Tg9AW  
import org.rut.util.algorithm.SortUtil; ojVN -*5  
;)ERxMun  
/** sGa "  
* @author treeroot Vq^b_^  
* @since 2006-2-2 N1U.1~U  
* @version 1.0 'Hu+8,xA  
*/ %Siw>  
public class ImprovedMergeSort implements SortUtil.Sort { ppeF,Q  
V2g"5nYT  
private static final int THRESHOLD = 10; \\Z?v,XsS  
Q_*.1L  
/* CM t$ )  
* (non-Javadoc) z*o2jz?t4  
* bvT$/ (7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `u8(qGg7GF  
*/ r'@7aT&_  
public void sort(int[] data) { bKh}Y`  
int[] temp=new int[data.length]; ft!D2M  
mergeSort(data,temp,0,data.length-1); x@|10GC#:  
} _J,*0~O$  
T ^/\Rr  
private void mergeSort(int[] data, int[] temp, int l, int r) { f3<253 1/}  
int i, j, k; dx.Jv/Mb  
int mid = (l + r) / 2; %mOQIXr1s  
if (l == r) aED73:b  
return; Z'd]oNF  
if ((mid - l) >= THRESHOLD) %d /]8uO  
mergeSort(data, temp, l, mid); 'a~F'FN$  
else =~q$k  
insertSort(data, l, mid - l + 1); `Y, Rk  
if ((r - mid) > THRESHOLD) $]a*ZHd;2&  
mergeSort(data, temp, mid + 1, r); &C#?&AQ  
else C @P$RVS  
insertSort(data, mid + 1, r - mid); -y/Y%]%0  
T6\d]  
for (i = l; i <= mid; i++) { G%CS1#  
temp = data; +5%ncSJx  
} <B+ WM  
for (j = 1; j <= r - mid; j++) { ;U?323Z  
temp[r - j + 1] = data[j + mid]; WGUd@lC~  
} HLqDI lL  
int a = temp[l]; lEw!H^O4  
int b = temp[r]; |w>d]eA5  
for (i = l, j = r, k = l; k <= r; k++) { '1Ex{$Yk  
if (a < b) { #6#%y~N  
data[k] = temp[i++]; 2=| Ks]<P  
a = temp; Jb)xzUhES  
} else { FWLLbL5t  
data[k] = temp[j--]; oYWHO<b  
b = temp[j]; k~JTQh*,w  
} .8wF> 8  
} #5X+. !L  
} b >'c   
O`;o"\P<  
/** 31p7oRzr  
* @param data g c<Y?a-  
* @param l "rpP  
* @param i }RQHsS  
*/ 1WI^R lWd(  
private void insertSort(int[] data, int start, int len) { r4]hcoU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /5?tXH"  
} ~^o YPd52*  
} m;vm7]5  
} k:&B b"  
} ZtpbKy!\$B  
`a@YbuLd  
堆排序: ];QX&";Z  
+t(Gt0+  
package org.rut.util.algorithm.support; !{A#\~,  
Jn20^YG  
import org.rut.util.algorithm.SortUtil; $;)A:*e  
rt\.|Hr4s  
/** +0:]KG!Zs.  
* @author treeroot PE6ZzxR|U<  
* @since 2006-2-2 x. /WP~I  
* @version 1.0 %KR2Vlh0  
*/ i,l$1g-i  
public class HeapSort implements SortUtil.Sort{ Z{_YH7_  
gbu)bqu2x  
/* (non-Javadoc) mqiCn]8G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =ibKdPtTh^  
*/ ~;oaW<"  
public void sort(int[] data) { ra1_XR}  
MaxHeap h=new MaxHeap(); {G=|fgz  
h.init(data); hE +M|#o  
for(int i=0;i h.remove(); =r~ExW}+  
System.arraycopy(h.queue,1,data,0,data.length); x, 'KI?TyQ  
} >{"E~U  
= @lM*  
private static class MaxHeap{ UvL=^*tm  
2hb>6Z;r]K  
void init(int[] data){ VzWH9%w  
this.queue=new int[data.length+1]; '.7ER  
for(int i=0;i queue[++size]=data; 9ol&p>  
fixUp(size); 9]g`VD6 <v  
} f~f)6XU|  
} =@d->d  
kU{a!ca4  
private int size=0; J #;|P-pt  
H9[0-Ur5  
private int[] queue; w|-m*v .  
4@Bl 1b[<  
public int get() { Q|7m9~  
return queue[1]; )p{,5"0u  
} p }3$7CR/  
R^yh,  
public void remove() { 43!E>mq  
SortUtil.swap(queue,1,size--); :\%ZTBLL  
fixDown(1); (b7',:_U7  
} iz27yXHZ~  
file://fixdown ziv*4  
private void fixDown(int k) { >|1-o;UU  
int j; H^jcWwy:  
while ((j = k << 1) <= size) { Lv>OBHD  
if (j < size %26amp;%26amp; queue[j] j++; Dt'bbX'edw  
if (queue[k]>queue[j]) file://不用交换 t* =i8`8  
break; L^Fb;sJYI  
SortUtil.swap(queue,j,k); m=60a@o]  
k = j; g2YE^EKU~  
} z#6(PZC}  
} ,]tMZ?n8  
private void fixUp(int k) { m-Qy6"eW  
while (k > 1) { .cr<.Ov  
int j = k >> 1; zOYG`:/'  
if (queue[j]>queue[k]) $ou/ Fn  
break; e1ExB#  
SortUtil.swap(queue,j,k); $NBQv6#:  
k = j; )c<[@ ::i  
} QvlV jDIy  
} yL23 Nqe  
j/1 f|x  
} Z5@E|O&  
(bD#PQXzm  
} ?BU?c:"f  
oKPG0iM:  
SortUtil: @u:q#b  
&pH XSU  
package org.rut.util.algorithm;  8(}cbW  
b.cBg.a  
import org.rut.util.algorithm.support.BubbleSort; K}p0$Lc  
import org.rut.util.algorithm.support.HeapSort; P}he}k&IR  
import org.rut.util.algorithm.support.ImprovedMergeSort; C-&s$5MzGb  
import org.rut.util.algorithm.support.ImprovedQuickSort; ksyQ_4^SO  
import org.rut.util.algorithm.support.InsertSort; pV$A?b"?*  
import org.rut.util.algorithm.support.MergeSort; 7s 0pH+  
import org.rut.util.algorithm.support.QuickSort; "7w=LhzV[$  
import org.rut.util.algorithm.support.SelectionSort; 'T]Ok\  
import org.rut.util.algorithm.support.ShellSort; %<MI]D  
!j9(%,PR  
/** J$S*QCo  
* @author treeroot Qa"4^s  
* @since 2006-2-2 "J 2v8c  
* @version 1.0 hSaw)g`w  
*/ CJ6vS  
public class SortUtil { {#z[iiB  
public final static int INSERT = 1; fbJa$  
public final static int BUBBLE = 2; Eg1|Kg\&  
public final static int SELECTION = 3; )IKqO:@  
public final static int SHELL = 4; zT'(I6 S:)  
public final static int QUICK = 5; Q 34-a"6)  
public final static int IMPROVED_QUICK = 6; b6@0?_n  
public final static int MERGE = 7; %z-n2%  
public final static int IMPROVED_MERGE = 8; w=[ITQ|W%  
public final static int HEAP = 9; {&nDm$KTD  
QM{B(zH  
public static void sort(int[] data) { }s.\B    
sort(data, IMPROVED_QUICK); p@wtT"Y  
} y/"CWD/i  
private static String[] name={ [+qB^6I+P%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ',I$`h  
}; vQ >8>V  
o)H| #9h5  
private static Sort[] impl=new Sort[]{ @Suww@<  
new InsertSort(), #_zj5B38E  
new BubbleSort(), F/"lJ/I  
new SelectionSort(), 9 $zx<O  
new ShellSort(), Jjh=zxR>  
new QuickSort(), VgMuX3=  
new ImprovedQuickSort(), }U**)"  
new MergeSort(), )a$sx}  
new ImprovedMergeSort(), H:o=gP60]  
new HeapSort() /.(F\2+A  
}; F mQiy+.|  
QG09=GQ  
public static String toString(int algorithm){ |Rb8 / WX  
return name[algorithm-1]; #2%8@?_-M  
} +l<;?yk:;  
|C7=$DgwY  
public static void sort(int[] data, int algorithm) { % xBQX  
impl[algorithm-1].sort(data); cK'}+  
} Nb\B*=4AR  
f_IsY+@  
public static interface Sort { -90X^]  
public void sort(int[] data); z/i&Lpr:  
} }L>0}H  
Q1x=@lXR  
public static void swap(int[] data, int i, int j) { #YSFiy:+r_  
int temp = data; + ,rl\|J%  
data = data[j]; ,+FiP{`  
data[j] = temp; +aOX{1w  
} P} Y .  
} $Eo-58<q  
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