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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。 ;5.o;|w?!  
插入排序: I:qfB2tL)O  
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package org.rut.util.algorithm.support; l?/.uNw  
iC{~~W6  
import org.rut.util.algorithm.SortUtil; G{cTQH|  
/** :~2An-V  
* @author treeroot kH43 T  
* @since 2006-2-2 [?$|   
* @version 1.0 Gkr^uXNg#  
*/ ?"aj&,q+  
public class InsertSort implements SortUtil.Sort{ R "&(Ae?LR  
/Lc= K<  
/* (non-Javadoc) 2z\4?HJy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uq,M\V \  
*/ N&0MA  
public void sort(int[] data) { <}E^r_NvD  
int temp; IFX|"3[$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ] _/d  
} YW}1iT/H  
} Qjj:r~l  
} Qn7l-:`?  
|m%M$^sZ}  
} &E{5k{Y  
6rnehv!p  
冒泡排序: @x@w<e%  
PSdH9ea  
package org.rut.util.algorithm.support; r]{fjw(~  
lbES9o5  
import org.rut.util.algorithm.SortUtil; O^ ]I>A#d  
8dw]i1t<  
/** TgaDzF,j{A  
* @author treeroot / -=(51}E  
* @since 2006-2-2 jz[|rwAp  
* @version 1.0 _e.b #{=9  
*/ (jD..qMs#  
public class BubbleSort implements SortUtil.Sort{ a.5s5g)8  
/p [l(H  
/* (non-Javadoc) 8j,_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f/b }X3K  
*/ r<oI4px  
public void sort(int[] data) { 6bg+U`&g  
int temp; \ooqa<_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Gc9^Z=  
if(data[j] SortUtil.swap(data,j,j-1); UZdE ^Q[  
} 9xg_M=72  
} Ssu{Lj  
} TKc&yAK  
} j8os6I  
Ar sMqb  
} '3o0J\cz  
cLl fncI  
选择排序: s\&_Kbw] c  
 W4CI=94  
package org.rut.util.algorithm.support; $/C<^}A  
71tMX[x  
import org.rut.util.algorithm.SortUtil; JLAg-j2  
#{0DpSzE5  
/** c 3@SgfKmk  
* @author treeroot Vk_*]wU  
* @since 2006-2-2 |Z;w k&  
* @version 1.0 L\og`L)5\  
*/ B>?Y("E  
public class SelectionSort implements SortUtil.Sort { &Jj> jCg  
Z-<v5aF  
/* YeJ95\jf  
* (non-Javadoc) i&,U);T  
* ~,e!t.339  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t%z7#}9$  
*/ >*}qGk  
public void sort(int[] data) { 3i(k6)H$4  
int temp; SEchF"KJQF  
for (int i = 0; i < data.length; i++) { BHmA*3?  
int lowIndex = i; ~rCnST  
for (int j = data.length - 1; j > i; j--) { n@L!{zY  
if (data[j] < data[lowIndex]) { <J-OwO a-1  
lowIndex = j; 8"LaP3U  
} )O- x1U  
} l``1^&K  
SortUtil.swap(data,i,lowIndex); @\l> <R9V  
} F.8{ H9`  
} w=e,gNO  
6sy%KO*A  
} F'CUkVC0~P  
>2syF{`j  
Shell排序: GIVs)~/Eq  
qd|*vE  
package org.rut.util.algorithm.support; CES FkAj~  
Ux icqkX  
import org.rut.util.algorithm.SortUtil; 24N,Bo 3  
Dlj=$25  
/** H[N&Wiq/|  
* @author treeroot ^z&xy41#B  
* @since 2006-2-2 G^mk<pH  
* @version 1.0 'v|2} T*  
*/ $fKwJFr  
public class ShellSort implements SortUtil.Sort{ P'9aZd  
o m_&|9B)  
/* (non-Javadoc) K[sM)_I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?XOeMI  
*/ T %a]3  
public void sort(int[] data) { {t/!a0\HS  
for(int i=data.length/2;i>2;i/=2){ <M'IR f/D  
for(int j=0;j insertSort(data,j,i); 9_>4~!x`  
} iKabo,~  
} Y(SI`Xo[  
insertSort(data,0,1); qk,cp},2K  
} yL Q&<\  
18A&[6"!  
/** Zc4hjg  
* @param data "}HQ)54&  
* @param j _Mt:^H}Sy  
* @param i aY:(0en]&  
*/ f,L  
private void insertSort(int[] data, int start, int inc) { +~fu-%,k  
int temp; M.8!BB7\8e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w|nVK9.  
} :s'%IGy>:  
} 93WYZNpX  
} ygf qP  
&HXSO,@  
} &yA<R::o  
(x^|  
快速排序: oNU* q.Q  
ONGe/CEXT  
package org.rut.util.algorithm.support; mW-@-5Wda  
Zj7XmkL  
import org.rut.util.algorithm.SortUtil; ; %Da {  
@E>^\!nH  
/** &\X;t|  
* @author treeroot )(L&+DDy  
* @since 2006-2-2 <@vE 3v;  
* @version 1.0 -.*\J|S@g  
*/ M<p)@p  
public class QuickSort implements SortUtil.Sort{ :9h8q"T  
Gj ^bz'2  
/* (non-Javadoc) |wb7`6g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | fI%L9  
*/ 7.Mh$?;i9  
public void sort(int[] data) { /* O,T  
quickSort(data,0,data.length-1); O^xt  
} z>0"T2W y  
private void quickSort(int[] data,int i,int j){ (;j7 {(  
int pivotIndex=(i+j)/2; @iP6 N  
file://swap K`X2N  
SortUtil.swap(data,pivotIndex,j); ww,c)$  
|@g1|OWd|  
int k=partition(data,i-1,j,data[j]); 5->PDp  
SortUtil.swap(data,k,j); zc1Zuco| R  
if((k-i)>1) quickSort(data,i,k-1); 6+u'Tcb  
if((j-k)>1) quickSort(data,k+1,j); d$TW](Bby  
$F-XXBp  
} PW`Tuj  
/** H\k5B_3OU  
* @param data >eTlew<5  
* @param i CbHNb~  
* @param j :9YQX(l8  
* @return -0X> y  
*/ @iRVY|t/  
private int partition(int[] data, int l, int r,int pivot) { 1}uDgz^  
do{ c'B"Onu@m*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "n6Y^  
SortUtil.swap(data,l,r); J7_H.RPa  
} !:t9{z{Ixg  
while(l SortUtil.swap(data,l,r); Xp~]kRm9  
return l; ;gMh]$|"  
} "P{&UwMmh  
Xdq, =;  
} *YtNt5u  
m%V[&"5%e  
改进后的快速排序: :z\f.+MI  
bevT`D  
package org.rut.util.algorithm.support; }m H>lN  
\$C 4H  
import org.rut.util.algorithm.SortUtil; SHk[X ]Uo  
 5q ,  
/** cMl%)j-  
* @author treeroot ??m7xH5u1  
* @since 2006-2-2 4PWr;&  
* @version 1.0 -"zu"H~t4  
*/ x]ti3?w  
public class ImprovedQuickSort implements SortUtil.Sort { 6b/b} vl  
':V_V. :  
private static int MAX_STACK_SIZE=4096; ]1&9~TL  
private static int THRESHOLD=10; ~{+{pcO}  
/* (non-Javadoc) h2%:;phH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #I?iR 3u  
*/ n{t',r50  
public void sort(int[] data) { >>$|,Q-.  
int[] stack=new int[MAX_STACK_SIZE]; [tzSr=,Cg  
%)9]dOdOk  
int top=-1; L)}V [j#  
int pivot; x 5SQ+7  
int pivotIndex,l,r; >D/~|`=p  
#& wgsGV8C  
stack[++top]=0; xiF%\#N  
stack[++top]=data.length-1; M: "ci;*$  
zcKC5vqb  
while(top>0){ ElXe=5L\#  
int j=stack[top--]; i'wF>EBz  
int i=stack[top--]; V@S/!h+  
?i~/gjp  
pivotIndex=(i+j)/2; }BJ1#<  
pivot=data[pivotIndex]; hzLGmWN2j8  
2 mZ/ 3u  
SortUtil.swap(data,pivotIndex,j); &%X Jf~IQ  
RC(D=6+[C  
file://partition 4QFOO sNp  
l=i-1; pU ]{Z(  
r=j; 3~</lAm;  
do{ %5*#c*)R  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FA9e(Ha   
SortUtil.swap(data,l,r); w.aFaR)04  
} {0e{!v  
while(l SortUtil.swap(data,l,r); ['emP1g~  
SortUtil.swap(data,l,j); %h"< IA S.  
({KAh?  
if((l-i)>THRESHOLD){  _)E8XyzF  
stack[++top]=i; qm=F6*@}  
stack[++top]=l-1; !|h2&tH  
} {,FeNf46  
if((j-l)>THRESHOLD){ " B{0-H+  
stack[++top]=l+1; 1ckw[0d  
stack[++top]=j; &t/<yq}{  
} 9yo[T(8  
%`QsX {?,  
} ;lH,bX~5  
file://new InsertSort().sort(data); ,R}KcZG)  
insertSort(data); "IG$VjgcB  
} wmE,k1G  
/** R0mT/h2  
* @param data &H1D!N  
*/ H}V*<mg w  
private void insertSort(int[] data) { $Q?G*@y  
int temp; Zfv(\SI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s66XdM  
} ~cBc&u:"  
} Z 034wn\N  
} ]8>UII,US  
37- y  
} SP7g qM  
"tB"j9Jb  
归并排序: sLa)~To  
P .4b+9T x  
package org.rut.util.algorithm.support; L*01l"5  
l;}7A,u  
import org.rut.util.algorithm.SortUtil; ,beR:60)  
jfPJ5]Z  
/** bNjaCK<  
* @author treeroot fC GDL6E  
* @since 2006-2-2 ?VZXJO{^  
* @version 1.0 (vsk^3R[6  
*/ }0*ra37z>  
public class MergeSort implements SortUtil.Sort{ sq(Ar(L<  
E'S;4B5?  
/* (non-Javadoc) dU>R<jl!$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _K}_h\e.  
*/ fyq] M_5  
public void sort(int[] data) { H.8CwsfP  
int[] temp=new int[data.length]; y7)[cvB  
mergeSort(data,temp,0,data.length-1); hf^`at  
} FR,#s^kF  
sx<+ *Trl  
private void mergeSort(int[] data,int[] temp,int l,int r){ zg Y*|{4Sl  
int mid=(l+r)/2; 0rJ\e  
if(l==r) return ; qVD!/;l  
mergeSort(data,temp,l,mid); @VC9gd O/  
mergeSort(data,temp,mid+1,r); Qv0>Pf  
for(int i=l;i<=r;i++){ @52=3  
temp=data; /N[o[q  
} Ed&,[rC  
int i1=l; Na 9l#  
int i2=mid+1; $ l sRg:J  
for(int cur=l;cur<=r;cur++){ HvgK_'  
if(i1==mid+1) zHoO?tGf  
data[cur]=temp[i2++]; {iIg 4PzrU  
else if(i2>r) 7! b)'W?  
data[cur]=temp[i1++]; $F@L$& ~  
else if(temp[i1] data[cur]=temp[i1++]; B,vHn2W  
else JNM@Q  
data[cur]=temp[i2++]; 76_8e{zbr  
} }RN=9J  
} MZMS ?}.2  
xK),:+G(  
} .H (}[eG_  
oF b mz*  
改进后的归并排序: 1Q&WoJLfR  
t:"=]zUU  
package org.rut.util.algorithm.support; {`Fx~w;i  
18p3  
import org.rut.util.algorithm.SortUtil; U??f<  
4`!  
/** ]i,Mq  
* @author treeroot 9HNh*Gc=  
* @since 2006-2-2 fyg~KF}  
* @version 1.0 &pMlt7  
*/ ??zABV  
public class ImprovedMergeSort implements SortUtil.Sort { )-9w3W1r  
Pvg  
private static final int THRESHOLD = 10; Ro'4/{}+  
^I'Lw  
/* )>/j&>%  
* (non-Javadoc) ^tg6JB;s  
* !: EW21m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lQ<#jxp  
*/ tU)r[2H2  
public void sort(int[] data) { }OP%p/eY  
int[] temp=new int[data.length]; WrHgF*[  
mergeSort(data,temp,0,data.length-1); i_9Cc$Qh<  
} 9B#)h)h(=  
g=oeS%>E  
private void mergeSort(int[] data, int[] temp, int l, int r) { 76IALJ00V  
int i, j, k; yNqm]H3<MP  
int mid = (l + r) / 2; DNm7z[ t{  
if (l == r) R(/[NvUb  
return; Jp.3KA>  
if ((mid - l) >= THRESHOLD) >xU72l#5  
mergeSort(data, temp, l, mid); -@ UN]K  
else k;K> ,$ F  
insertSort(data, l, mid - l + 1); K.#,O+-Kg`  
if ((r - mid) > THRESHOLD) / UaNYv/  
mergeSort(data, temp, mid + 1, r); C6D=>%uY  
else liCCc;&B;  
insertSort(data, mid + 1, r - mid); RQ*|+ ~H  
!4 4mT'Y  
for (i = l; i <= mid; i++) { 7SA-OFM  
temp = data; TRySl5jx@  
} :_fjml/  
for (j = 1; j <= r - mid; j++) { p;n3`aVh  
temp[r - j + 1] = data[j + mid]; XC7Ty'#"KX  
} n $O.>  
int a = temp[l]; +9 16ZPk  
int b = temp[r]; qUEd E`B  
for (i = l, j = r, k = l; k <= r; k++) { 9 N*S-Po=  
if (a < b) { ^:cb $9F  
data[k] = temp[i++]; o&hKg#nO83  
a = temp; *3.yumcv{L  
} else { Z/NGv  
data[k] = temp[j--]; 1C}pv{0:&  
b = temp[j]; A"\P&kqMV  
} f74%YY  
} tyn?o  
} qL%.5OCn(  
c#\ah}]Vo  
/** oRT  
* @param data h7de9Rt  
* @param l nCffBc  
* @param i  e8XM=$@  
*/ y(/jTS/ hd  
private void insertSort(int[] data, int start, int len) { kO..~@ aY  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JK(`6qB>(6  
} ^ Hz  
} h \D_  
} &prdlh=UE  
} t`<}UWAH+  
C}(<PNT  
堆排序: zqekkR]  
]ZR{D7.?  
package org.rut.util.algorithm.support; P<cMP)+K  
|n|U;|'^  
import org.rut.util.algorithm.SortUtil; 5T$9'5V7  
0\\ueMj  
/** {2}tPT[a(  
* @author treeroot Tsm)&$JI8  
* @since 2006-2-2 [|:QE~U@  
* @version 1.0 ~8H&m,{j  
*/ 1R'u v4e  
public class HeapSort implements SortUtil.Sort{ 3:]{(@J  
PZ  
/* (non-Javadoc) )XmCy"xx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AkYupP2]v  
*/ klK-,J  
public void sort(int[] data) { ot|N;=ZKo  
MaxHeap h=new MaxHeap(); MO));M)  
h.init(data); vHs>ba$"  
for(int i=0;i h.remove(); 0%;N9\  
System.arraycopy(h.queue,1,data,0,data.length); Cbgj@4H  
} F:[7^GQZ{  
ou<S)_|Iu  
private static class MaxHeap{ )CC?vV  
5`4}A%@&  
void init(int[] data){ kP!%|&w;  
this.queue=new int[data.length+1]; Tm%$J  
for(int i=0;i queue[++size]=data; fs2m N1  
fixUp(size); XPHQAo[(s  
} r.^0!(d  
} PtQQZ"ept  
1KeJd&e  
private int size=0; egZyng pB  
V;>9&'Z3  
private int[] queue; JwN}Jm  
#d }0}7ue  
public int get() { 4o1Q7  
return queue[1]; :0 W6uFNOU  
} >:w?qEaE  
jgk{'_ j  
public void remove() { `FZ(#GDF  
SortUtil.swap(queue,1,size--); K)<Wm,tON  
fixDown(1); MxM]( ew~7  
} dIoF~8V  
file://fixdown ]%gp?9wy  
private void fixDown(int k) { a(PjcQ4dY  
int j; eP V-yy  
while ((j = k << 1) <= size) { ?60>'Xj j  
if (j < size %26amp;%26amp; queue[j] j++; ,bB( 24LD  
if (queue[k]>queue[j]) file://不用交换 Si#"Wn?|  
break; o\_ Td  
SortUtil.swap(queue,j,k); X4d Xm>*?=  
k = j; Pk$}%;@v  
} W0VA'W  
} D3<IuWeM  
private void fixUp(int k) { >}ro[x`K  
while (k > 1) { 9 b?i G  
int j = k >> 1; [Xxw]C6\>(  
if (queue[j]>queue[k]) I["F+kt^^  
break; e(?:g@]-r  
SortUtil.swap(queue,j,k); 6?53q e  
k = j; GLo\q:5A  
} BhqhyX\D&y  
} sFbfFUd  
$a`J(I  
} z[WC7hvU  
fm3(70F\  
} J)-T:.i|0  
?F!EB4E\y}  
SortUtil: .i MnWW  
5,F;j<F  
package org.rut.util.algorithm; Bj;\mUsk  
}*?yHJ3  
import org.rut.util.algorithm.support.BubbleSort; Lf5%M|o.)  
import org.rut.util.algorithm.support.HeapSort; nVz5V%a!\q  
import org.rut.util.algorithm.support.ImprovedMergeSort; \9046An  
import org.rut.util.algorithm.support.ImprovedQuickSort; m,\i  
import org.rut.util.algorithm.support.InsertSort; x^zdTMNhw  
import org.rut.util.algorithm.support.MergeSort; I)[`ZVAXR  
import org.rut.util.algorithm.support.QuickSort; IO}+[%ptc*  
import org.rut.util.algorithm.support.SelectionSort; ;l$9gD>R  
import org.rut.util.algorithm.support.ShellSort; n"(7dl?  
BmJkt3j."  
/** ZrFr`L5F;  
* @author treeroot Bx+d3  
* @since 2006-2-2  pgC d  
* @version 1.0 A ?#]s  
*/ # .~ga7Q  
public class SortUtil { lo"j )Zt  
public final static int INSERT = 1; L30>| g  
public final static int BUBBLE = 2; 2>\b:  
public final static int SELECTION = 3; pNP_f:A|  
public final static int SHELL = 4; {d| |q<.-  
public final static int QUICK = 5; %,33gZzf  
public final static int IMPROVED_QUICK = 6; E|Q{]&$;Z"  
public final static int MERGE = 7; S  <2}8D  
public final static int IMPROVED_MERGE = 8; AnRlH  
public final static int HEAP = 9; _o\>V:IZ  
- o4@#p>>  
public static void sort(int[] data) { \^Ep>Pq`]  
sort(data, IMPROVED_QUICK); 9X!ET!  
} h8em\<;  
private static String[] name={ [.{^"<Z<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a@Mq J=<L  
}; B,4q>KQA  
(RExV?:  
private static Sort[] impl=new Sort[]{ Kl2}o|b   
new InsertSort(), #>BX/O*D  
new BubbleSort(), $+7ci~gs  
new SelectionSort(), *U M! (  
new ShellSort(), YdK _.t0Mu  
new QuickSort(), T0;u+$  
new ImprovedQuickSort(), FX7M4t#<  
new MergeSort(), >J.Qm0TY(  
new ImprovedMergeSort(), |Mt&p#y  
new HeapSort() \xF;{}v  
}; {z=j_;<]  
Ah*wQow  
public static String toString(int algorithm){ w %;hl#s  
return name[algorithm-1]; yDzdE;  
} S)+CTVVE  
tL1P<1j_  
public static void sort(int[] data, int algorithm) { vuXS/ d  
impl[algorithm-1].sort(data); HF]EU!OT  
} j]>=1Rd0b(  
>o#ERNf  
public static interface Sort { h(_P9E[g  
public void sort(int[] data); \WcB9  
} ,`y yR:F  
4b]_ #7Qm  
public static void swap(int[] data, int i, int j) { Yhe+u\vGs\  
int temp = data; "2%>M  
data = data[j]; sA3UeTf  
data[j] = temp; k'g$2  
} p<q].^M  
} AfN&n= d K  
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