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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。 eL7\})!W  
插入排序: 8KU5x#  
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package org.rut.util.algorithm.support; b/eJEL  
/^TXGc.  
import org.rut.util.algorithm.SortUtil; .Q^8 _'ZG  
/**  "0( _  
* @author treeroot 20XN5dTFT  
* @since 2006-2-2 Z_qOQ%l  
* @version 1.0 a*gzVE7W#n  
*/ @3F4Lg6H|  
public class InsertSort implements SortUtil.Sort{ -l# h^  
c8cPGm#i  
/* (non-Javadoc) vUU)zZB ~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i{ " g 7  
*/ :n} NQzs  
public void sort(int[] data) { 2!+saf^-,  
int temp; m$X0O_*A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qz .{[ l  
} +7]]=e<[E  
} g~i%*u,Y<  
} FnFJw;:,{  
Z*Fxr;)d  
} o2C{V1nB  
sAG#M\A6  
冒泡排序: )Kw Gb&l&  
LyB &u( )  
package org.rut.util.algorithm.support; ^t{2k[@  
.0b$mSV[  
import org.rut.util.algorithm.SortUtil;  KDODUohC  
d?uN6JH9  
/** 2MapB*  
* @author treeroot n%J {Tcn6  
* @since 2006-2-2 bm+ #OI  
* @version 1.0 U)n+j}vi  
*/ O*8 .kqlgt  
public class BubbleSort implements SortUtil.Sort{ ^mA^7jB  
np#RBy  
/* (non-Javadoc) &2EimP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TZ2-%k#  
*/ ; n)9  
public void sort(int[] data) { Pq@%MF]5  
int temp; Av#_cL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ca},tov&  
if(data[j] SortUtil.swap(data,j,j-1); Vk>m/"  
} '8$*gIQ8  
} E~y@ue:  
} W".: 1ov#B  
} [Pnk@jIk4  
uFzvb0O`O  
} ?Thh7#7LM  
&u@<0 1=  
选择排序: I|27%i  
TNHkHR[&  
package org.rut.util.algorithm.support; iksd^\]f  
X?'v FC  
import org.rut.util.algorithm.SortUtil; wInJ!1  
,a&&y0,  
/** ,'E+f%  
* @author treeroot YF]W<ZpY  
* @since 2006-2-2 #BK3CD(&  
* @version 1.0 2Bf]#l{z  
*/ t3dvHU&Z:  
public class SelectionSort implements SortUtil.Sort { !G0OD$  
Sas &P:# r  
/* $i^#KZ}-WK  
* (non-Javadoc) 2th>+M~A  
* M :4N'#`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dZ1/w0<M2  
*/ rX-V0  
public void sort(int[] data) { 0pYCh$TL1  
int temp; 7NY9UQ  
for (int i = 0; i < data.length; i++) { (H\)BS7#R  
int lowIndex = i; a=m7pe ^  
for (int j = data.length - 1; j > i; j--) { 0\N n.x%  
if (data[j] < data[lowIndex]) { TbY <(wrMZ  
lowIndex = j; @w H+,]xE  
} VhWF(*  
} @.PVUP  
SortUtil.swap(data,i,lowIndex); lBbUA)z6  
} Z;nbnRz  
} ]Ywj@-*q  
SP,#KyWP0)  
} P2q'P&  
`pHlGbrW  
Shell排序: LZ97nvK  
km)5?  
package org.rut.util.algorithm.support; .fQ/a`AsU  
4!%TY4 bJ  
import org.rut.util.algorithm.SortUtil; HR/"Nwr  
XpFo SW#K  
/** E7_)P>aS5  
* @author treeroot HH\6gs]u  
* @since 2006-2-2 b?p_mQKtZ  
* @version 1.0 @213KmB.  
*/ IwE{Zvr  
public class ShellSort implements SortUtil.Sort{ <0Mc\wy  
0nh;0Z  
/* (non-Javadoc) ((2 g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NaR/IsN8%  
*/ 2W}f|\8MX  
public void sort(int[] data) { 3M;[.b  
for(int i=data.length/2;i>2;i/=2){ 7nzNBtk  
for(int j=0;j insertSort(data,j,i); C;u8qVI  
} ,r&:C48 dI  
} 4z_>CiA  
insertSort(data,0,1); 9{{|P=  
} J73B$0FP  
aetK<9L$  
/** dW32O2@-  
* @param data /G zA89N(  
* @param j Ly?%RmHK  
* @param i *@XJ7G[  
*/ Mn- f  
private void insertSort(int[] data, int start, int inc) { =`8%qh  
int temp; -FAAP&LG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Auq)  
} 0X`sQNx  
} }\9elVt'2  
} "kE$2Kg  
3Ishe"  
} +}XFkH~  
8IAf 9  
快速排序: zfAkWSY  
q,ry3Nr4n  
package org.rut.util.algorithm.support; k63]Qf=5?N  
AI$r^t1  
import org.rut.util.algorithm.SortUtil; ]6`]+&  
Hcp)Q76X  
/** F~NmLm  
* @author treeroot A,tmy',d"  
* @since 2006-2-2 @_gCGI>Q  
* @version 1.0 >O{U4_j@(  
*/ r[>=iim  
public class QuickSort implements SortUtil.Sort{ i|z=q  
'8au j  
/* (non-Javadoc) <.DFa/G   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qoNVp7uv  
*/ %s+H& vfQs  
public void sort(int[] data) { l17sJ!I  
quickSort(data,0,data.length-1); <Ae1YHUY  
} :'L^zGf  
private void quickSort(int[] data,int i,int j){ 7X Z5CX&  
int pivotIndex=(i+j)/2; $\W|{u`  
file://swap ?,_$;g  
SortUtil.swap(data,pivotIndex,j); FmRCTH  
v<*ga7'S  
int k=partition(data,i-1,j,data[j]); 1eg/<4]hA  
SortUtil.swap(data,k,j); .>5KwEK~  
if((k-i)>1) quickSort(data,i,k-1); 7*!h:rg  
if((j-k)>1) quickSort(data,k+1,j); xq?9w$  
rmX'Ym9#  
} ]BY^.!Y  
/** cJ6n@\  
* @param data uxGY/Zf  
* @param i 7e{w)m:A  
* @param j 5hVp2 w-  
* @return GI&XL'K&  
*/ \S[7-:Lu^  
private int partition(int[] data, int l, int r,int pivot) { E>/kNl  
do{ U]Iypl`l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0 i76(2  
SortUtil.swap(data,l,r); 7J 0=HbH  
} `N+A8  
while(l SortUtil.swap(data,l,r); So ?ScX\lG  
return l; *rY@(|  
} aoLYw 9  
$ekB+ t:cj  
} Lo'P;Sb4<}  
=}:9y6QR.  
改进后的快速排序: &f}a`/{@  
ZnX]Q+w  
package org.rut.util.algorithm.support; *W'F 6Hpu  
-h5yg`+1N\  
import org.rut.util.algorithm.SortUtil; Q(P'4XCm  
th@a./h"  
/** 6x1 !!X+)+  
* @author treeroot X8F@U ^@  
* @since 2006-2-2 }y<p_dZI  
* @version 1.0 yPgDb[V+  
*/ - P;_j,~U  
public class ImprovedQuickSort implements SortUtil.Sort { NWuJ&+gcO5  
*z2G(Uac  
private static int MAX_STACK_SIZE=4096; bCM&Fe0GM  
private static int THRESHOLD=10; 8hx4s(1!  
/* (non-Javadoc) bITc9Hqc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N5 BC<pu  
*/ K~j&Q{yws@  
public void sort(int[] data) { ZRDY `eK  
int[] stack=new int[MAX_STACK_SIZE]; 0KW@j>=jK  
(dOC ^i  
int top=-1; 1_D|;/aI  
int pivot; QZcdfJck=+  
int pivotIndex,l,r; ]9xuLJ)  
'@Zau\xC  
stack[++top]=0; RUJkfi=$  
stack[++top]=data.length-1; /Iwnl   
>900I4]I  
while(top>0){ Cu5fp.OS7  
int j=stack[top--]; EXlmIY4  
int i=stack[top--]; vvJ{fi  
w"s;R8  
pivotIndex=(i+j)/2; %M=[h2SN  
pivot=data[pivotIndex]; _l?InNv  
(!-gX" <b  
SortUtil.swap(data,pivotIndex,j); -E6#G[JJ  
]7 qn&(]  
file://partition SZO$#  
l=i-1; <h(KI Y9T  
r=j; tx$kD2  
do{ P8tpbdZE-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l+6y$2QR  
SortUtil.swap(data,l,r); }T@^wY_Ow  
} o,| LO$~  
while(l SortUtil.swap(data,l,r); 9(;5!q,Gsg  
SortUtil.swap(data,l,j);  ~F?vf@k  
}?"}R<F|M,  
if((l-i)>THRESHOLD){ ]*I:N  
stack[++top]=i; [>5<&[A  
stack[++top]=l-1; #;9I3,@/Y  
} Z(fXN$  
if((j-l)>THRESHOLD){ ^[K3]*!@  
stack[++top]=l+1; r-M:YB  
stack[++top]=j;  U 6((  
} k)Y}X)\36  
t' )47k\  
} i$~2pr  
file://new InsertSort().sort(data);  yN9k-IPI  
insertSort(data); 'H"wu /#  
} "m*.kB)e7  
/** \;al@yC=T  
* @param data \#LkzN8  
*/ cL31g_u  
private void insertSort(int[] data) { -__RFxG  
int temp; 9`83cL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F`/-Q>Q  
} 3\x@G)1  
} `Gct_6  
} Lk?%B)z  
sVk+E'q  
} qPh @Bl3  
I r8,=  
归并排序: .hBq1p  
Y7W xV>E  
package org.rut.util.algorithm.support; b2}>{Li0  
G,tJ\xMw8  
import org.rut.util.algorithm.SortUtil; v"nN[_T  
(IlHg^"  
/** .YV{wL@cB  
* @author treeroot *&WkorByW  
* @since 2006-2-2 -6 WjYJx  
* @version 1.0 P$YY4|`  
*/ 4 &r5M  
public class MergeSort implements SortUtil.Sort{ c$Vu/dgx  
sK)fEx  
/* (non-Javadoc) @ |bN[XL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4( Q_J4}P  
*/ /z<7gd~oU  
public void sort(int[] data) { ^$8@B]*  
int[] temp=new int[data.length]; j7(sYo@x7  
mergeSort(data,temp,0,data.length-1);  {{hp;&x  
} B,Pbm|U1  
U_s3)/'  
private void mergeSort(int[] data,int[] temp,int l,int r){ [i[*xf-B  
int mid=(l+r)/2; 4?+K:e #F  
if(l==r) return ; a`c#- je  
mergeSort(data,temp,l,mid); o1Bn^ w  
mergeSort(data,temp,mid+1,r); =>? ;Iv'Z  
for(int i=l;i<=r;i++){ z\S#P|;  
temp=data; F52%og~N  
} zD#$]?@ b  
int i1=l; `SFA`B)[5@  
int i2=mid+1; AcZ{B<  
for(int cur=l;cur<=r;cur++){ }BF!!*  
if(i1==mid+1) dTV4 Q`Z  
data[cur]=temp[i2++]; F$L2bgQR?'  
else if(i2>r) 1NHiW v  
data[cur]=temp[i1++]; &zuPt5G|  
else if(temp[i1] data[cur]=temp[i1++]; j,DF' h  
else jL9g.q4^  
data[cur]=temp[i2++]; o#"U8N%r  
} NCW<~   
} q=I8W}Z i  
l#%qF Db  
} #'DrgZ)W  
a0wSXd  
改进后的归并排序: #$5"&SM  
;(&$Iw9X  
package org.rut.util.algorithm.support; X8}m %  
/KU9sIE;  
import org.rut.util.algorithm.SortUtil; *~h@KQm7  
{gL8s  
/** 7aF'E1e'3  
* @author treeroot U yb-feG  
* @since 2006-2-2 pZE}<EX  
* @version 1.0 QN4{xf:}S  
*/ [b2KBww\  
public class ImprovedMergeSort implements SortUtil.Sort { .uh>S!X, ]  
]%%I=r  
private static final int THRESHOLD = 10; CP]nk0  
7 XNZEi9o  
/* 7 KuUV!\h`  
* (non-Javadoc) ~FP4JM,y6  
* Kw%to9 eh)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u%t/W0xi  
*/ .OyzM  
public void sort(int[] data) { c-GS:'J{  
int[] temp=new int[data.length]; ABx< Ep6  
mergeSort(data,temp,0,data.length-1); lfJvN  
} c -sc*.&  
N8[ &1  
private void mergeSort(int[] data, int[] temp, int l, int r) { -dto46X  
int i, j, k; *VUD!`F  
int mid = (l + r) / 2; H=/;  
if (l == r) Sg&0a$  
return; {yzo#"4Oy  
if ((mid - l) >= THRESHOLD) pZ`^0#Fo  
mergeSort(data, temp, l, mid); w@![rH6~F  
else `4SwdW n  
insertSort(data, l, mid - l + 1); D'8xP %P  
if ((r - mid) > THRESHOLD) MyZ5~jnr\  
mergeSort(data, temp, mid + 1, r); ]|xfKDu  
else AjYvYMA&  
insertSort(data, mid + 1, r - mid); (]@yDb4  
>P9|?:c  
for (i = l; i <= mid; i++) { s![Di  
temp = data; Z|#G+$"QV  
} wsKOafrV  
for (j = 1; j <= r - mid; j++) { 7Dt* ++:  
temp[r - j + 1] = data[j + mid]; +L\Dh.Ir  
} gmqL,H#  
int a = temp[l]; [PIh^ DhK  
int b = temp[r]; h5o6G1ur  
for (i = l, j = r, k = l; k <= r; k++) { ~D0e \Q(A  
if (a < b) { nk*T x  
data[k] = temp[i++]; kEYkd@ {  
a = temp; n8+_Uww  
} else { /;X+<Wj  
data[k] = temp[j--]; gLss2i.r  
b = temp[j]; <"hq}B  
} )KdEl9o  
} kgb:<{pJ  
} ^KF%Z2:$  
@e#{Sm  
/** a5k![sw\  
* @param data p 2>\  
* @param l W9rmAQjn  
* @param i !hugn6  
*/ f-BPT2U+  
private void insertSort(int[] data, int start, int len) { \Dx;AKs  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y$K[ArqX  
} oHPh2b0  
} Yn_v'Os2  
} 4[lym,8C  
} Xk(p:^ R  
YlC$L$%Zd.  
堆排序: :^En\YcU  
X( )yhe_  
package org.rut.util.algorithm.support; 4T>d%Tt+)  
hnnVp_<]  
import org.rut.util.algorithm.SortUtil; Jm`{MzqL  
$xqX[ocor  
/** Aa`R40yl  
* @author treeroot M:*)l(  
* @since 2006-2-2 u.@B-Pf[Eo  
* @version 1.0 x+bC\,q  
*/ @@3%lr71   
public class HeapSort implements SortUtil.Sort{ w }=LC#le  
p f`vH`r  
/* (non-Javadoc) XS(Q)\"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .)c+gyaQ  
*/ M^&^g  
public void sort(int[] data) { 2 {xf{)hO?  
MaxHeap h=new MaxHeap(); sh/4ui{  
h.init(data); !BjJ5m  
for(int i=0;i h.remove(); 'j9x(T1M1  
System.arraycopy(h.queue,1,data,0,data.length); u#+Is4Vh  
} MMy\u) 4  
!y&<IT(\4  
private static class MaxHeap{ ++!'6! l  
PVi0|  
void init(int[] data){ qQwf#&  
this.queue=new int[data.length+1]; }vEMG-sxX  
for(int i=0;i queue[++size]=data; S=a>rnF  
fixUp(size); &9ERlZ(A  
} BC)1FxsGf  
} bMB@${i}  
^@ Xzh:  
private int size=0; `PtfPt<{  
Kut@z>SK  
private int[] queue; Pyp#'du>  
f~?kx41dq  
public int get() { J(5#fo{Q.g  
return queue[1]; T2}X~A  
} =<X4LO)C  
GGU>={D)  
public void remove() { {#,?K  
SortUtil.swap(queue,1,size--); ] Jnrs  
fixDown(1); W+i&!'  
} W.c>("gC  
file://fixdown 48)D%867.;  
private void fixDown(int k) { gLwrYG7@  
int j; .1:B\ R((  
while ((j = k << 1) <= size) { e3k58  
if (j < size %26amp;%26amp; queue[j] j++; r8Z.}<j  
if (queue[k]>queue[j]) file://不用交换 UmLBoy&*  
break; eWr2UXv$  
SortUtil.swap(queue,j,k); hO2W!68  
k = j; BU O8 Z]  
} "..I$R  
} TR9dpt+T  
private void fixUp(int k) { -VvN1G6.x?  
while (k > 1) { W.l#@p  
int j = k >> 1; ;0o% hx  
if (queue[j]>queue[k]) fwi -   
break; 0*,] `A=  
SortUtil.swap(queue,j,k); $"g'C8  
k = j; t]hfq~Ft  
} ,rX|_4 n*  
} D%= j@  
H`4KhdqR  
} UHS "{%  
K$wxiGg8P  
} 6GoQJ  
0py29>"t  
SortUtil: ))6YOc  
$U"pdf  
package org.rut.util.algorithm; SNC)cq+{  
L\q-Z..  
import org.rut.util.algorithm.support.BubbleSort; U^kk0OT^  
import org.rut.util.algorithm.support.HeapSort; T~ P<Gq} ,  
import org.rut.util.algorithm.support.ImprovedMergeSort; Yo\%53w/  
import org.rut.util.algorithm.support.ImprovedQuickSort; }J6 y NoXu  
import org.rut.util.algorithm.support.InsertSort; $mxl&Qr>Q;  
import org.rut.util.algorithm.support.MergeSort; $ncP#6  
import org.rut.util.algorithm.support.QuickSort; XrJLlH>R4  
import org.rut.util.algorithm.support.SelectionSort; ) 3ZkKv;zY  
import org.rut.util.algorithm.support.ShellSort; a28`)17z  
[&)*jc16  
/** QTU$mC]  
* @author treeroot 8{)N%r  
* @since 2006-2-2 ;P^}2i[q>[  
* @version 1.0 -YS9u [   
*/ 7w}]9wCN?  
public class SortUtil { W^i[7 r  
public final static int INSERT = 1; Nk<H=kw+  
public final static int BUBBLE = 2; -PaR&0Tt  
public final static int SELECTION = 3; ;pqS|ayl  
public final static int SHELL = 4; h*?]A  
public final static int QUICK = 5; fs2y$HN  
public final static int IMPROVED_QUICK = 6; w& )ApfL  
public final static int MERGE = 7; i^)JxEPr w  
public final static int IMPROVED_MERGE = 8; KB$Y8[  
public final static int HEAP = 9; Qp-P[Tc  
bUe6f,8,  
public static void sort(int[] data) { ,U>G$G^  
sort(data, IMPROVED_QUICK); \=H+m%  
} 7 iQa)8,  
private static String[] name={ U:gvK 8n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^@<Ia-x  
}; D2f~*!vEnA  
bp'\nso/  
private static Sort[] impl=new Sort[]{ |`d-;pk!%  
new InsertSort(), |P-kyY34  
new BubbleSort(), M %!O)r#Pn  
new SelectionSort(), @=K*gbq5  
new ShellSort(), q:m qA$n  
new QuickSort(), *JO%.QNg  
new ImprovedQuickSort(), f.:0T&%G  
new MergeSort(), |eksvO'~  
new ImprovedMergeSort(), +*G<xW :M  
new HeapSort() $\L=RU!c}  
}; j07b!j:"\}  
} a!HbH  
public static String toString(int algorithm){ ->W rBO  
return name[algorithm-1]; L$?YbQo7  
} A~;+P  
2>)::9e4  
public static void sort(int[] data, int algorithm) { P}vk5o'  
impl[algorithm-1].sort(data); ,Y@4d79  
} IO"q4(&;P4  
yY!@FGsA  
public static interface Sort { o4,9jk$  
public void sort(int[] data); ^2nH6,LPS  
} %-an\.a.  
q*}$1 zb  
public static void swap(int[] data, int i, int j) { B-wF1! Jv  
int temp = data; L(}/W~En  
data = data[j]; 4 ;^  
data[j] = temp; ",]A.,  
} j|VX6U   
} !Hj 7|5  
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