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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。 &Npv~Iy  
插入排序: g`~c|bx  
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package org.rut.util.algorithm.support; BEM_y:#  
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import org.rut.util.algorithm.SortUtil; p-n_ ">7  
/** .-[uQtyWW  
* @author treeroot D )z'FOaI  
* @since 2006-2-2 q]Gym 7o  
* @version 1.0 o"D`_ER  
*/ DArEIt6Q  
public class InsertSort implements SortUtil.Sort{ [OJ@{{U%  
m)4s4P57y  
/* (non-Javadoc) AnVj '3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jG=*\lK6  
*/ A[L+w9  
public void sort(int[] data) { |@pJ]  
int temp; Gs$<r~Tg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mlCw(i,  
} F. X{(8  
} M##h<3I  
} zRtaO'G(  
aH<BqD[#  
} Di{T3~fqU  
F*QZVg+<*X  
冒泡排序: sOA!Sl  
s>`$]6wPa  
package org.rut.util.algorithm.support; l<  8RG@  
lV!ecJw$  
import org.rut.util.algorithm.SortUtil; &$uQ$]&H  
\eD#s  
/** 3c] oU1GfF  
* @author treeroot .zr2!}lB  
* @since 2006-2-2 :@KU_U)\  
* @version 1.0 wWm 1G)  
*/ 1GB$;0 W),  
public class BubbleSort implements SortUtil.Sort{ Q`ERI5b6  
c]jK Y<  
/* (non-Javadoc) y05(/NH>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^6;n@  
*/ m#Rgelhk.  
public void sort(int[] data) { h,B ]5Of  
int temp; q%8%J'Fro  
for(int i=0;i for(int j=data.length-1;j>i;j--){ TTcMIMyLT  
if(data[j] SortUtil.swap(data,j,j-1); -+4:} sD  
} ($:s}_<>s  
} d K|6p_  
} ") kE 1D%  
} clK3kBh~&  
` oN~  
} w^tNYN,i  
@F)51$Ld  
选择排序: un|+YqLf  
9?B}CCE<LR  
package org.rut.util.algorithm.support; FNlzpCT~L  
6L Z(bP'd;  
import org.rut.util.algorithm.SortUtil; ]CyWL6 z  
NYtp&[s2-  
/** s>d@=P>R  
* @author treeroot 5|YpkY  
* @since 2006-2-2 O57n<J'6  
* @version 1.0 =fa!"$J3  
*/  e#0C  
public class SelectionSort implements SortUtil.Sort { j>XM+>  
bnBnE[y<'  
/* !7ct=L  
* (non-Javadoc) +r[u4?  
* &L}e&5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f?: o  
*/ oLVy?M%{P  
public void sort(int[] data) { qk~ni8  
int temp; 1<a+91*=e  
for (int i = 0; i < data.length; i++) { 8 _0j^oh  
int lowIndex = i; A-<\?13uW  
for (int j = data.length - 1; j > i; j--) { CuRYtY@9  
if (data[j] < data[lowIndex]) { r@L19d)J  
lowIndex = j; =*0<.Lo':  
} KK" uSC  
} nxH=Ut7{  
SortUtil.swap(data,i,lowIndex); ^t4T8ejn  
} -U;2 b_  
} uP bvN[~t  
dr3#?%  
} 5 {cbcuG  
i-Ck:-J  
Shell排序: 4Z>KrFO  
--E_s /   
package org.rut.util.algorithm.support; Dp|y&x!  
=$3]%b}  
import org.rut.util.algorithm.SortUtil; u50 o1^<X  
yVd}1bX  
/** z zL@3/<j  
* @author treeroot R}lS@w1  
* @since 2006-2-2 B-`d7c5  
* @version 1.0 Dd8*1,  
*/ (xw)pR  
public class ShellSort implements SortUtil.Sort{ e"HA.t[A  
@,0W(  
/* (non-Javadoc) Pe[~kog,TP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yt79W  
*/ ?)<DEu:Y  
public void sort(int[] data) { ^(7<L<H  
for(int i=data.length/2;i>2;i/=2){ !4zSE,1  
for(int j=0;j insertSort(data,j,i); 5X>b(`  
} V+My]9ki  
} t.|b285e  
insertSort(data,0,1); M.|O+K z  
} 71`)@y,Z,  
"<6X=|C  
/** {xb8H  
* @param data p^PAbCP'|3  
* @param j lA}(63j+b  
* @param i e]-bB#-A  
*/ LAqmM3{fA  
private void insertSort(int[] data, int start, int inc) { @Bs7kjuX  
int temp; A?[06R5E#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x*GGO)r  
} nxH+XHv  
} TZ8:3ti  
} Y?G9d6]Lk6  
_E0XUT!rA  
} S*,DX~vig  
BUR96YN.  
快速排序: `j+aAxJ=\  
Wt=QCutt  
package org.rut.util.algorithm.support;  WK;X6`  
?v8.3EE1\o  
import org.rut.util.algorithm.SortUtil; $g? ]9}p  
:D(4HXHK%  
/** le1  
* @author treeroot e<wA["^  
* @since 2006-2-2 C-Y~T;53  
* @version 1.0 4%#Y)z o.e  
*/ V<&x+?>S  
public class QuickSort implements SortUtil.Sort{ |HhqWja  
J`/t;xk  
/* (non-Javadoc) B3 fKb#T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q;A1&UA2  
*/ =+24jHs  
public void sort(int[] data) { D"kss5>w  
quickSort(data,0,data.length-1); v eP)ElX  
} 1#rcxUSi  
private void quickSort(int[] data,int i,int j){ .bcoH  
int pivotIndex=(i+j)/2; Y*0AS|r!  
file://swap t"[ xx_i  
SortUtil.swap(data,pivotIndex,j); [Q(FBoI|  
dq d:V$o  
int k=partition(data,i-1,j,data[j]); m$b5Vqq  
SortUtil.swap(data,k,j); LLp/ SWe  
if((k-i)>1) quickSort(data,i,k-1); /[ _aw&W}Z  
if((j-k)>1) quickSort(data,k+1,j); ]o}g~Xn  
:E ]Ys  
} hKa<9>MI`  
/** 8 nCw1   
* @param data ^5j+O.zgN  
* @param i zJC!MeN  
* @param j CJ+/j=i;~c  
* @return iZsZSW \  
*/ 39 D!e&  
private int partition(int[] data, int l, int r,int pivot) { Cu*+E%P9`  
do{ CG@3z@*?.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2d1Z;@x  
SortUtil.swap(data,l,r); hp ?4w),  
} @~t^zI1  
while(l SortUtil.swap(data,l,r); KVQ^-^  
return l; zx<:1nF,]  
} K?]><z{  
S#km`N`  
} c8uFLM j  
7 YS'Tf  
改进后的快速排序: C(N' +VV_  
/ =]h@m-`  
package org.rut.util.algorithm.support; 3$<u3Zi6  
 UZJ^ e$N  
import org.rut.util.algorithm.SortUtil; L'1!vu *Rg  
SZVNu*G!H  
/** yjcZTvjJ  
* @author treeroot wm1`<r^M.  
* @since 2006-2-2 *`D}voU  
* @version 1.0 IXjFK  
*/ Bi}uL)~rD  
public class ImprovedQuickSort implements SortUtil.Sort { M8_f{|!&  
;U+4!N  
private static int MAX_STACK_SIZE=4096; QT\||0V~p  
private static int THRESHOLD=10; Ag[Zs%X  
/* (non-Javadoc) $7J9Yzp?L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2HA-q),6  
*/ uJxT)m!/  
public void sort(int[] data) { dJYsn+  
int[] stack=new int[MAX_STACK_SIZE]; "AN*2)e4  
h2k"iO }  
int top=-1; 6}z-X*  
int pivot; ZLP)i;Az  
int pivotIndex,l,r; +pcGxje\  
FM{^ND9x  
stack[++top]=0; AvP$>Alc  
stack[++top]=data.length-1; ]iI2  
f\p#3IwwH  
while(top>0){ S10"yhn(-t  
int j=stack[top--]; :%&|5Ytb  
int i=stack[top--]; V47z;oMXct  
\mK;BWg)  
pivotIndex=(i+j)/2; aMU0BS"   
pivot=data[pivotIndex];  %XF>k)  
B/Jz$D  
SortUtil.swap(data,pivotIndex,j); bCa%$  
+( Q$GO%  
file://partition 2Dc2uU@`r  
l=i-1; _?VMSu  
r=j; g:dtfa/]  
do{ 'dXGd.V7u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K_SURTys  
SortUtil.swap(data,l,r); y$Nqw9  
} }Gvu!a#R  
while(l SortUtil.swap(data,l,r); != uaB.  
SortUtil.swap(data,l,j); \v\f'eQ  
Jy^.L$bt  
if((l-i)>THRESHOLD){ .ei5+?V<i  
stack[++top]=i; a:v5(@8  
stack[++top]=l-1; LE@<)}Au^  
} QUQw/  
if((j-l)>THRESHOLD){ zf4\V F  
stack[++top]=l+1; /Z~} dWI  
stack[++top]=j; \\R$C  
} p<Oz"6_/~  
gT-"=AsxZQ  
} MpNgp )%>  
file://new InsertSort().sort(data); 0<3->uK  
insertSort(data); }xa~U,#5  
} 4UxxmREx;  
/** W(#u^,$e[  
* @param data }Fq~!D Ee  
*/ f (Su  
private void insertSort(int[] data) { Xp67l!{v  
int temp; 5^5hhm4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -P6Z[ V%  
} -){aBMOv3  
} |KMwK png  
} k_?Z6RE>  
.Qv H7  
} @S<6#zR  
6 l,8ev  
归并排序: &7J-m4BI  
@sdHB ./  
package org.rut.util.algorithm.support; +0l-zd\  
zJ*(G_H  
import org.rut.util.algorithm.SortUtil; 73p7]Uo  
''Y'ZsQ;  
/** M\_IQj  
* @author treeroot Fp&tJ]=B.  
* @since 2006-2-2 Q "vhl2RX  
* @version 1.0 I/B*iW^  
*/ x DiGN Jc  
public class MergeSort implements SortUtil.Sort{ +HT?> k  
H$ZLtPv5  
/* (non-Javadoc) Oq9E$0JW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B&+)s5hh  
*/ dW5@Z-9  
public void sort(int[] data) { ?E}9TQ  
int[] temp=new int[data.length]; -UoTBvObAm  
mergeSort(data,temp,0,data.length-1); ]r\FC\n6e  
} kNd(KQ<.17  
^wIg|Gc  
private void mergeSort(int[] data,int[] temp,int l,int r){ Zmc"  
int mid=(l+r)/2; 3\ {?L  
if(l==r) return ; |)65y  
mergeSort(data,temp,l,mid); QOR92}yC  
mergeSort(data,temp,mid+1,r); /O}lSXo6E  
for(int i=l;i<=r;i++){ : i{tqY%  
temp=data; iLt2L;v>h  
} j  Gp&P  
int i1=l;  3 GL,=q  
int i2=mid+1; 3y%,f|ju  
for(int cur=l;cur<=r;cur++){ G]n_RP$G  
if(i1==mid+1)  Al1}Ir   
data[cur]=temp[i2++]; tbXl5x0  
else if(i2>r) 2!_DkE  
data[cur]=temp[i1++]; 8F K%7\V  
else if(temp[i1] data[cur]=temp[i1++]; 2Krh&  
else SE$~Wbj?  
data[cur]=temp[i2++]; C %i{{Y&l  
} g#q7~#9  
} UOpSH{N  
U4N H9-U'  
} YuUJgt .1  
wEF"'T  
改进后的归并排序: 7J ;\&q'  
/|p\l"  
package org.rut.util.algorithm.support; 5gSe=|we*p  
M%YxhuT0  
import org.rut.util.algorithm.SortUtil; eiQ42x@Z  
IP  
/** $ ~%w21?&  
* @author treeroot '2Lx>nByk  
* @since 2006-2-2 xOx=Z\ c  
* @version 1.0 /Un\P   
*/ &`IJ55Z-)  
public class ImprovedMergeSort implements SortUtil.Sort { `x`zv1U  
,<BV5~T.|  
private static final int THRESHOLD = 10; -W{ !`<8D  
6j Rewj  
/* ?PYZW5  
* (non-Javadoc) 5\Rg%Ezl  
* C]Q`!e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }X6w"  
*/ ]$BC f4:  
public void sort(int[] data) { :*ZijN*{)$  
int[] temp=new int[data.length]; VHi'~B#'*  
mergeSort(data,temp,0,data.length-1); <@$+uZt+  
} S.Q:O{]  
p}Um+I=1  
private void mergeSort(int[] data, int[] temp, int l, int r) { B7wzF"  
int i, j, k; 29^(weT"]  
int mid = (l + r) / 2; `MHixQ;j  
if (l == r) Q@uWh:  
return; Ob/i_  
if ((mid - l) >= THRESHOLD) }9 ]7V<  
mergeSort(data, temp, l, mid); :PK2! 0nK  
else "A*;V  
insertSort(data, l, mid - l + 1); {"2Hv;x  
if ((r - mid) > THRESHOLD) Mh2Zj  
mergeSort(data, temp, mid + 1, r); {oS/Xa  
else r~G  amjS  
insertSort(data, mid + 1, r - mid); >`l^ C  
;H3~r^>c  
for (i = l; i <= mid; i++) { yIC C8M  
temp = data; * a^wYWa  
} <iBn-EG l>  
for (j = 1; j <= r - mid; j++) { `oTV)J'~  
temp[r - j + 1] = data[j + mid]; CTe!jMZ=  
} ;Y,zlq2  
int a = temp[l]; e8E'X  
int b = temp[r]; XmaRg{22  
for (i = l, j = r, k = l; k <= r; k++) { S5:&_&R8[  
if (a < b) { 8>9MeDE  
data[k] = temp[i++]; $DaQM'-  
a = temp; :r2d%:h%2  
} else { RG=i74a  
data[k] = temp[j--]; voFg6zoV_  
b = temp[j]; bXeJk]#y  
} a)*(**e$*i  
} iaJLIrl  
} E5 #ff5  
\<hHZS  
/** +4p=a [  
* @param data * H~=dPC  
* @param l [%P[ x]-  
* @param i f1S% p  
*/ HRyhq ;C  
private void insertSort(int[] data, int start, int len) { ]4r&Q4d>O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c_>AbF{  
} ]a`"O  
} |S~$IFN4  
} gb4$W@N7V  
} +tlBOl $  
Ljiw9*ZI  
堆排序: >xA( *7  
ArjRoXDE  
package org.rut.util.algorithm.support; OnU-FX<  
'BUfdb8d  
import org.rut.util.algorithm.SortUtil; &'`ki0Xh;  
NHQoP&OG  
/** yVQW|D0,j  
* @author treeroot .<E7Ey#  
* @since 2006-2-2 5i}g$yjZ<  
* @version 1.0 upaQoX/C  
*/ ;<GK{8  
public class HeapSort implements SortUtil.Sort{ {>PEl; ,-  
B873UN  
/* (non-Javadoc) @LFB}B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r,3\32[?  
*/ R )4,f~@"  
public void sort(int[] data) { >Q'*~S@v3  
MaxHeap h=new MaxHeap(); #C'E'g0  
h.init(data); *VH Wvj  
for(int i=0;i h.remove(); H!6+x*P0  
System.arraycopy(h.queue,1,data,0,data.length); 4e?bkC  
} H DD)AM&p  
&EYoviFp  
private static class MaxHeap{ >j7]gi(  
P_b!^sq9  
void init(int[] data){ w ~"%&SNN  
this.queue=new int[data.length+1]; E^gN]Z"O  
for(int i=0;i queue[++size]=data; ?bu=QV@  
fixUp(size); p5py3k  
} )*R';/zaI  
} M IyT9",Pl  
,6#%+u}f  
private int size=0; q!+:zZu  
]NtBP  
private int[] queue; :>0,MO.^~K  
_mk@1ft  
public int get() { vC^{,?@  
return queue[1]; a\ ~118 !  
} Um4DVg5  
wv\V&U$  
public void remove() { $iMLT8U  
SortUtil.swap(queue,1,size--); Qg]A^{.1  
fixDown(1); wW8[t8%43  
} ,j9?9Z7R  
file://fixdown ._t1eb`m{  
private void fixDown(int k) { {-Mjs BR  
int j; fFoZ! H  
while ((j = k << 1) <= size) { `KE]RTq  
if (j < size %26amp;%26amp; queue[j] j++; I<XYLe[_S  
if (queue[k]>queue[j]) file://不用交换 I-1NZgv  
break; SjY|aW+wAL  
SortUtil.swap(queue,j,k); xG(iSuz  
k = j; ycwkF$7  
} CW/<?X<!n  
} KK5_;<  
private void fixUp(int k) { -"{g kjuv  
while (k > 1) { ,%BDBZ  
int j = k >> 1; ]T&d_~l   
if (queue[j]>queue[k]) R/Z7}QW  
break; #6~Bg)7AM  
SortUtil.swap(queue,j,k); =9`UcTSi6p  
k = j; (2QfH$HEk  
} >qOj^WO~  
} .)Pul|)d  
]zCD1 *)  
} BX6kn/i  
@HSK[[?  
} ;<;~;od*/  
hF5T9^8  
SortUtil: {~j/sto-:  
Ww\ WuaY  
package org.rut.util.algorithm; Yh;(puhyA  
2_6ON   
import org.rut.util.algorithm.support.BubbleSort; cH4 PrMm&  
import org.rut.util.algorithm.support.HeapSort; C^5 V  
import org.rut.util.algorithm.support.ImprovedMergeSort; \x\N?$`ANc  
import org.rut.util.algorithm.support.ImprovedQuickSort; >T\@j\X4  
import org.rut.util.algorithm.support.InsertSort; IbJl/N%o  
import org.rut.util.algorithm.support.MergeSort; O:a=94  
import org.rut.util.algorithm.support.QuickSort; >dJ~  
import org.rut.util.algorithm.support.SelectionSort; $+ N~Fa  
import org.rut.util.algorithm.support.ShellSort; `W" ;4A  
ij~-  
/** S0gxVd(  
* @author treeroot h^qZi@L  
* @since 2006-2-2 F u^j- Io  
* @version 1.0 b62B|0i  
*/ Ctn?O~u  
public class SortUtil { &l!T2PX!  
public final static int INSERT = 1; J .TK<!  
public final static int BUBBLE = 2; $~/cxLcT  
public final static int SELECTION = 3; r\FZ-gk}Q  
public final static int SHELL = 4; = &?&}pVF  
public final static int QUICK = 5; rly%+B `/  
public final static int IMPROVED_QUICK = 6; HRjbGc|[  
public final static int MERGE = 7; 3&5b!Y  
public final static int IMPROVED_MERGE = 8; o)n)Z~  
public final static int HEAP = 9; D/ sYH0.V$  
l?rLadvc  
public static void sort(int[] data) { | 5:2?S2R  
sort(data, IMPROVED_QUICK); o1?-+P/  
} ;ND[+i2MN  
private static String[] name={ >SL mlK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p >ua{}!L  
}; -*~ @?  
vfvp#  
private static Sort[] impl=new Sort[]{ sf[|8}(  
new InsertSort(), 42A'`io[w]  
new BubbleSort(), Y'bz>@1(  
new SelectionSort(), MP<]-M'|<  
new ShellSort(), W[qy4\.B  
new QuickSort(), rFkZ'rp74b  
new ImprovedQuickSort(), $pAVTz  
new MergeSort(), `?WN*__["  
new ImprovedMergeSort(), aaw[ia_EL  
new HeapSort() 6&0G'PMf  
}; 0s H~yvM5  
|HYST`  
public static String toString(int algorithm){ %6rSLBw3  
return name[algorithm-1]; V9qA'k  
} Oq,@{V@)9k  
>;Vfs{Z(q  
public static void sort(int[] data, int algorithm) { &7>]# *  
impl[algorithm-1].sort(data); .taP2^2Z  
} G!=(^G@J;  
s3yGL  
public static interface Sort { Skr0WQ  
public void sort(int[] data); Yt,MXm\  
} ^Go,HiB  
44B D2`nF  
public static void swap(int[] data, int i, int j) { XqUQ{^;aI  
int temp = data; XksI.]tfj  
data = data[j]; v_pe=LC{-e  
data[j] = temp; n}e%c B  
} Im!b-1  
} @>.aQE  
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