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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。 ^Z]1Z  
插入排序: gHc0n0ZV  
_ Js & _d  
package org.rut.util.algorithm.support; FaO=<jYi  
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import org.rut.util.algorithm.SortUtil; AK%2#}k.  
/** FaO1?.  
* @author treeroot f6n'g:&.W  
* @since 2006-2-2 to@ O  
* @version 1.0 G3vKA&KZ  
*/ -Gjz;/s%XH  
public class InsertSort implements SortUtil.Sort{ pcIJija:  
v~i/e+.h>y  
/* (non-Javadoc) hQ`g B.DR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m/l#hp+  
*/ ,&$=2<Dx  
public void sort(int[] data) { 9qxB/5d_  
int temp; {iiHeSD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jeM %XI  
} n |5+HE4@  
} |4NH}XVYJ>  
} d7Lna^  
F.ml]k&(m  
} n]G!@-z  
;QbMVY  
冒泡排序: h;105$E1  
o#Q0J17i?  
package org.rut.util.algorithm.support; >]uV  
td{M%D,R"  
import org.rut.util.algorithm.SortUtil;  9')  
:X7"fX  
/** D4WvRxki  
* @author treeroot kx=.K'd5H  
* @since 2006-2-2 Oi# F  
* @version 1.0 xu[6h?u(h8  
*/ =jZ}@L/+  
public class BubbleSort implements SortUtil.Sort{ )Cl!,m)~  
NU>={9!  
/* (non-Javadoc) k@r%>Ul@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ S%3?Q  
*/ FWpcWmS`s  
public void sort(int[] data) { m":lKXpQ  
int temp; Zhb) n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F8{"Rk}  
if(data[j] SortUtil.swap(data,j,j-1); pj?wQ'  
} z^s/7Va[  
} lJHV c"*/  
} ,YzrqVY  
} 8$</HNu,  
 a~>.  
} --*Jv"/0  
;`<uo$R  
选择排序: =8BMCedH|  
LlAMtw"  
package org.rut.util.algorithm.support; Cz@[l=-T7  
aq/'2U 7  
import org.rut.util.algorithm.SortUtil; b?Dhhf  
[:Kl0m7  
/** *3 .+19Q  
* @author treeroot 7 ,Tg>,%Q  
* @since 2006-2-2 8!87p?Mz  
* @version 1.0 R_iQLBrd  
*/ D{1k{/cF  
public class SelectionSort implements SortUtil.Sort { 3Z.<=D  
&K Ti[  
/* Qu4Bd|`(k  
* (non-Javadoc) > cFH=um  
* os/_ObPiX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yhF{ cK =  
*/ HmxA2 ~C  
public void sort(int[] data) { $RA8U:Q!1e  
int temp; ]7SX _:'*  
for (int i = 0; i < data.length; i++) { HPM ggRs  
int lowIndex = i; y" 4Nw]kU  
for (int j = data.length - 1; j > i; j--) { >|h$d:~n  
if (data[j] < data[lowIndex]) { zq ;YE  
lowIndex = j; M1(+_W`  
} KI&+Zw4VL  
} $#q:\yQsPC  
SortUtil.swap(data,i,lowIndex); AC*> f&  
} $Pw@EC]  
} K/)*P4C-  
' fXBWi6  
} C(o]3):?  
Z x&gr|)}  
Shell排序: Af'L=0  
p9c`rl_N  
package org.rut.util.algorithm.support; ')!+>b(P  
F$[1KjS  
import org.rut.util.algorithm.SortUtil; j*2Q{ik>J  
pO^goo V\  
/** IK#W80y  
* @author treeroot v X=zqV  
* @since 2006-2-2 JIeKp7;^  
* @version 1.0 >,JLYz|</  
*/ e)Q{yO  
public class ShellSort implements SortUtil.Sort{ C*O648yz[  
HR0t[*  
/* (non-Javadoc) .Pz( 0Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x\/N09  
*/ px`o.%`'  
public void sort(int[] data) { 9ure:Dko(Y  
for(int i=data.length/2;i>2;i/=2){ j,@N0~D5  
for(int j=0;j insertSort(data,j,i); tl.I:A5L  
} k [6%+  
} $F> #1:=v<  
insertSort(data,0,1); _ ," -25a  
} 3awh>1N2 W  
jkz .qo-%  
/** +C`h*%BW  
* @param data Grot3a  
* @param j gWlv;oq  
* @param i NI(fJ%U  
*/ uK_Q l\d  
private void insertSort(int[] data, int start, int inc) { aI8k:FK"  
int temp; 0UV5}/2rP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JY$B%R4;]  
} rU^?Z  
} ARcPHV<(2  
} A\{dq:  
L`$m<9w'  
} 2=?/$A9p  
r3~~4Q4XI>  
快速排序: tCkKJ)m  
vn5X]U"  
package org.rut.util.algorithm.support; HTfHAc?W  
0}(ZW~& 1  
import org.rut.util.algorithm.SortUtil; [=Qv?am  
v4X\LsOP  
/** }o>6 y>=  
* @author treeroot zGm#er E  
* @since 2006-2-2 kzZdYiC  
* @version 1.0 N*d )<8_  
*/ m53XN  
public class QuickSort implements SortUtil.Sort{ HH_w!_f  
P F#X8+&J  
/* (non-Javadoc) (``EBEn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -N'xQ(#n3q  
*/ \FVm_)  
public void sort(int[] data) { o;.6Y `-fJ  
quickSort(data,0,data.length-1); `S&(J2KV  
} z5~{WAAI  
private void quickSort(int[] data,int i,int j){ HiTn5XNf  
int pivotIndex=(i+j)/2; :g1C,M~  
file://swap %cy]dEL7  
SortUtil.swap(data,pivotIndex,j); K|Q|v39{b  
=\jp%A1$  
int k=partition(data,i-1,j,data[j]); ql Z()  
SortUtil.swap(data,k,j); +59tX2@Q  
if((k-i)>1) quickSort(data,i,k-1); p([g/Q  
if((j-k)>1) quickSort(data,k+1,j); +4[L_  
a(!_ 3i@  
} S4n ~wo  
/** %}t<,ex(yO  
* @param data {Q/XV=  
* @param i <IiX_*  
* @param j i5oV,fiZo  
* @return :?!kZD!  
*/ u!NY@$Wc  
private int partition(int[] data, int l, int r,int pivot) { |nfFI  
do{ H@!\?5I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A6?+$ Hr  
SortUtil.swap(data,l,r); a}oFL%=?  
} +9 Uo<6}  
while(l SortUtil.swap(data,l,r); KY1(yni&8[  
return l; v0~'`*|&  
} ?Hb5<,1u3  
XYBvM]  
} jzRfD3_s  
zF+NS]XK  
改进后的快速排序: w Pk\dyP  
N>Dr z  
package org.rut.util.algorithm.support; 6EHYIN^D  
<"Ox)XG3]W  
import org.rut.util.algorithm.SortUtil; p i ;,?p-  
Idq &0<I  
/** BhO*Pfs  
* @author treeroot v]"W.<B,  
* @since 2006-2-2 _?9|0>]xG  
* @version 1.0 0+a-l[!p  
*/ ;<aT| 4  
public class ImprovedQuickSort implements SortUtil.Sort { x1g0_&F  
);8Nj zX1  
private static int MAX_STACK_SIZE=4096; OxGS{zs  
private static int THRESHOLD=10; _$wXHONt  
/* (non-Javadoc) <=]wh|D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f-w-K)y$ht  
*/ XkG:1H;Q%  
public void sort(int[] data) { =qQH,{]c6  
int[] stack=new int[MAX_STACK_SIZE]; ck=x_HB1  
Dd1\$RBo  
int top=-1; 3J^"$qfSn  
int pivot; 'N-nFc^  
int pivotIndex,l,r; i)vbmV  
T d7f  
stack[++top]=0; ;7Hse^Oc  
stack[++top]=data.length-1; Z0Tpz2m  
m)5,ut/  
while(top>0){ KW3Dr`A  
int j=stack[top--]; !,;>)R   
int i=stack[top--]; W%3<"'eP  
JG]67v{F  
pivotIndex=(i+j)/2; Ts+S>$  
pivot=data[pivotIndex]; m7GM1[?r  
.?16w`Y  
SortUtil.swap(data,pivotIndex,j); X:aLed_{f  
O WJv<3  
file://partition U Bo[iZ|%  
l=i-1; F&ud|X=m  
r=j; -r.Qy(}p  
do{ .7h:/d Y:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &#keI.,  
SortUtil.swap(data,l,r);  j|Q*L<J  
} \Vc-W|e  
while(l SortUtil.swap(data,l,r); @ m' zm:  
SortUtil.swap(data,l,j); xJ2DkZ  
z0@{5e$#Y  
if((l-i)>THRESHOLD){ ~1_v;LhH5+  
stack[++top]=i; MLu@|Xgh  
stack[++top]=l-1; QYm]&;EI  
} bO)voJ<  
if((j-l)>THRESHOLD){ /-in:gX8  
stack[++top]=l+1; mz|#K7:  
stack[++top]=j; P^wDt14>  
} y:C=Ni&,"  
]c67zyX=%  
} 1MntTIT  
file://new InsertSort().sort(data); ^)qOILn  
insertSort(data); EWcqMD]4u  
} x] e &G!|  
/** )SX2%&N  
* @param data @-L4<=$J  
*/ 0 `Yg  
private void insertSort(int[] data) { Cb`2"mpWS  
int temp; EAPLe{qw:q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hI+mx  
} LSX;|#AI  
} }^ g6Y3\  
} ws^ 7J/8  
!>n^ ;u  
} i!|OFU6  
E46+B2_~zk  
归并排序: JO|%Vpco  
xI'sprNa_1  
package org.rut.util.algorithm.support; DlD;rL=  
m2i'$^a#  
import org.rut.util.algorithm.SortUtil; 1FkS$ j8:  
e-4 Qw #cw  
/** &bIE"ZBjt  
* @author treeroot LqDj4[}  
* @since 2006-2-2 W7\s=t\  
* @version 1.0 ji8)/  
*/ ~8A !..Z  
public class MergeSort implements SortUtil.Sort{ ^ UB*Q  
ZxDh94w/  
/* (non-Javadoc) lhp.zl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JemB[  
*/ Te\i;7;4u  
public void sort(int[] data) { lRy^Wp  
int[] temp=new int[data.length]; /=+y[y3`  
mergeSort(data,temp,0,data.length-1); 53g(:eB  
} x{o&nhuk[S  
vv  F:  
private void mergeSort(int[] data,int[] temp,int l,int r){ d=*&=r0!C{  
int mid=(l+r)/2; @(b;H0r~  
if(l==r) return ; AW\#)Em  
mergeSort(data,temp,l,mid); JBvMe H5  
mergeSort(data,temp,mid+1,r); km 0LLYG  
for(int i=l;i<=r;i++){ =!V-V}KK-  
temp=data; eu^B  
} { Rd){ky@  
int i1=l; =IIB~h[TB  
int i2=mid+1; F\)?Ntj)>@  
for(int cur=l;cur<=r;cur++){ 9'{i |xG  
if(i1==mid+1) 5[qCH(6  
data[cur]=temp[i2++]; (^U 8wit/  
else if(i2>r) *(w#*,lv  
data[cur]=temp[i1++]; :!cNkJa  
else if(temp[i1] data[cur]=temp[i1++]; x_k @hGSC  
else Z7$"0%  
data[cur]=temp[i2++]; WxgA{q7:  
} JSCZX:5  
} ;7 F'xz"  
Klv~#9Si  
} (mR ;MC  
}O7!>T  
改进后的归并排序: DJ]GM|?  
5N5Deb#V  
package org.rut.util.algorithm.support; #rps2nf.j  
%F.^cd"  
import org.rut.util.algorithm.SortUtil; I<&(Dg|XQ  
@pn<x"F5'  
/** !! \O B6  
* @author treeroot It@1!_tO2  
* @since 2006-2-2 6u6,9VG,  
* @version 1.0 J+]W*?m  
*/ GcHy`bQbiX  
public class ImprovedMergeSort implements SortUtil.Sort { ?h1r6?Sug{  
&B c$8ZR  
private static final int THRESHOLD = 10; m })EYs1  
@D3|Ak1  
/* kJfMTfl,  
* (non-Javadoc) Jh6 z5xUV  
* 1>"Yw|F-|3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Av)N6$&-Z  
*/ C8oAl3d+h  
public void sort(int[] data) { =Felo8+   
int[] temp=new int[data.length]; iN]#XIQ%  
mergeSort(data,temp,0,data.length-1); b-Uy&+:X*d  
} HUuZ7jJwf  
=D}]|ie  
private void mergeSort(int[] data, int[] temp, int l, int r) { (& =gM  
int i, j, k; o4l=oY:'  
int mid = (l + r) / 2; |PY*"Ul  
if (l == r) BQ /0z^A  
return; Y \oz9tf8  
if ((mid - l) >= THRESHOLD) e5HHsR6  
mergeSort(data, temp, l, mid); 920 o]Dh=t  
else {i!@C(M3  
insertSort(data, l, mid - l + 1); %aHQIoxg  
if ((r - mid) > THRESHOLD) 9NPOdt:@  
mergeSort(data, temp, mid + 1, r); -Y:^<C^^&8  
else VW%eB  
insertSort(data, mid + 1, r - mid); &1(PS)s  
V9SkB3-'  
for (i = l; i <= mid; i++) { ndB [f  
temp = data; \l d{Z;e  
} C3#mmiL-  
for (j = 1; j <= r - mid; j++) { qe@ctHpn  
temp[r - j + 1] = data[j + mid]; ?_<14%r;  
} iAd3w6  
int a = temp[l]; ~4t7Q  
int b = temp[r]; HZ8k%X}1  
for (i = l, j = r, k = l; k <= r; k++) { /^jV-Z`  
if (a < b) { w<54mGMOLr  
data[k] = temp[i++]; l^WPv/}?  
a = temp; 6.>l  
} else { F%s'R 0l  
data[k] = temp[j--]; q<2b,w==  
b = temp[j]; YH .+(tNv  
} YYzl"<)c  
} dK^WZQ  
} z}sBx 9;  
8`4Z%;1  
/** 8<w8"B.i  
* @param data :~gG]|F  
* @param l E5EAk6  
* @param i 2dpTU=K4  
*/ 8`? vWJS  
private void insertSort(int[] data, int start, int len) { `~S ; UG   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~,: FZ1wh  
} gb,X"ODq  
} g5,Bj  
} DFUW^0N  
} 3ug-cq  
_w\A=6=q|  
堆排序: a{deN9Qn  
=4H"&Eu{  
package org.rut.util.algorithm.support; Hb :@]!r>  
ns/L./z  
import org.rut.util.algorithm.SortUtil; #383W)n  
IBY(wx[5S  
/** }.$5'VGO  
* @author treeroot s<;kTReA  
* @since 2006-2-2 MNzWTn@  
* @version 1.0 pndAXO:v  
*/ Z8yt8O  
public class HeapSort implements SortUtil.Sort{ /A{/  
6k%Lc4W  
/* (non-Javadoc) ,f(:i^iz!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A['0~tOP  
*/ e>a4v8  
public void sort(int[] data) { WdvXVF  
MaxHeap h=new MaxHeap(); (='e9H!3D  
h.init(data); ra[*E4P9L*  
for(int i=0;i h.remove(); #rs]5tx([  
System.arraycopy(h.queue,1,data,0,data.length); b+rn:R  
} 6_#:LFke  
=iEQE  
private static class MaxHeap{ OU /=wpt  
k:JlC(^h  
void init(int[] data){ cIJqF.k  
this.queue=new int[data.length+1]; 9R6]OL)p  
for(int i=0;i queue[++size]=data; y~ZYI]` J  
fixUp(size); 6 $k"B/k  
} k9|8@3(h  
} y))) {X  
BWHH:cX  
private int size=0; " F3M  m  
1[&V6=n  
private int[] queue; }kK6"]Tj  
%x2_njDd  
public int get() { #3WKm*T/  
return queue[1]; F=qG +T  
} &P,z$H{o@  
ZNX=]]HM<n  
public void remove() { 6k@(7Mw8A  
SortUtil.swap(queue,1,size--); e71dNL'$  
fixDown(1); bWe_<'N  
} nR2pqaKc  
file://fixdown lz-t+LD@ST  
private void fixDown(int k) { &0='z  
int j; ]LE  
while ((j = k << 1) <= size) { h jCkj(b  
if (j < size %26amp;%26amp; queue[j] j++; 3tZC&!x?  
if (queue[k]>queue[j]) file://不用交换 \ O#6H5F  
break; sPod)w?e  
SortUtil.swap(queue,j,k); D')m8:>  
k = j; 4* vV9*'!  
} 9jC>OZ0s  
} +"HLx%k  
private void fixUp(int k) { F}C.F  
while (k > 1) { F6$QEiDu@  
int j = k >> 1; A3Lfh6O  
if (queue[j]>queue[k]) jZ5 mpYUO  
break; K\2UwX  
SortUtil.swap(queue,j,k); ;:/<XfZ  
k = j; !pMp n%r<]  
} k ='c*`IE  
} :qQpBr$  
G+$A|'<`z  
} 13X\PO'9  
l^$8;$Rq  
} PI5a 'k0F  
Y4 <  
SortUtil: XC D&Im  
n:#gKR-J  
package org.rut.util.algorithm; Q#2gjR r  
;<9dND  
import org.rut.util.algorithm.support.BubbleSort; ~ }g"Fe  
import org.rut.util.algorithm.support.HeapSort; hA0g'X2eC  
import org.rut.util.algorithm.support.ImprovedMergeSort; g+xA0qW  
import org.rut.util.algorithm.support.ImprovedQuickSort; 06dk K )`  
import org.rut.util.algorithm.support.InsertSort; bhqs%B!:  
import org.rut.util.algorithm.support.MergeSort; "{&?t}rj+  
import org.rut.util.algorithm.support.QuickSort; j=Co  
import org.rut.util.algorithm.support.SelectionSort; < SIe5" {  
import org.rut.util.algorithm.support.ShellSort; Uo7V)I;o  
 @o g&l;  
/** 9\aR{e,1  
* @author treeroot QS*!3? %  
* @since 2006-2-2 O6[,K1,  
* @version 1.0 xMb)4cw}  
*/ FuKp`T-H  
public class SortUtil { 9~En;e  
public final static int INSERT = 1; !}TZmwf'  
public final static int BUBBLE = 2; jYv`kt  
public final static int SELECTION = 3; 7a4b,-93  
public final static int SHELL = 4; a IA9rn  
public final static int QUICK = 5; Eed5sm$H  
public final static int IMPROVED_QUICK = 6; \+STl#3*q  
public final static int MERGE = 7; (}|QSf:  
public final static int IMPROVED_MERGE = 8; ,dG2[<?o  
public final static int HEAP = 9; %O! ~!'  
7E-1 #4  
public static void sort(int[] data) { S\F;b{S1  
sort(data, IMPROVED_QUICK); e{~3&  
} _Kw<4 $0<p  
private static String[] name={ B}(+\Q$I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [YsN c  
}; 2[#7YWs  
(eOzntp8  
private static Sort[] impl=new Sort[]{ ,Qd;t  
new InsertSort(), 2GHmA_7P  
new BubbleSort(), '}Tf9L%  
new SelectionSort(), POl[]ni=>  
new ShellSort(), $Eo)i  
new QuickSort(), !D_Qat  
new ImprovedQuickSort(), C|@6rr9TA  
new MergeSort(), mo$`a6[h<  
new ImprovedMergeSort(), |BO!q9633V  
new HeapSort() ]4$t'wI.  
}; !@r1B`]j+"  
2}ttC m  
public static String toString(int algorithm){ KXAh0A?&+  
return name[algorithm-1]; exn Fy-  
} ^o*$OM7x  
C_&-2Z  
public static void sort(int[] data, int algorithm) { ?_!} lg  
impl[algorithm-1].sort(data); ;Tn$c70  
} +;H-0Q5  
G<S(P@ss  
public static interface Sort { g^V4+3v|a'  
public void sort(int[] data); rr@S|k:|  
} ~ .FZF  
zB8 @Wl  
public static void swap(int[] data, int i, int j) { " ^t3VjN  
int temp = data; u+&t"B  
data = data[j]; -UHa;W H  
data[j] = temp; @F+zME   
} S#kA$yO  
} '`/Qr~]  
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