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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。 f)c~cJz<q  
插入排序: wiaX&-c]8  
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package org.rut.util.algorithm.support; k4qp u=@U  
n9pN6,o+  
import org.rut.util.algorithm.SortUtil; < v]3g  
/** )&era ` e[  
* @author treeroot P o jmC  
* @since 2006-2-2 {GvTfZfp  
* @version 1.0 )eUW5 tS  
*/ I$Qs;- (  
public class InsertSort implements SortUtil.Sort{ c`lJu_  
6.5T/D*TT  
/* (non-Javadoc) x}U8zt)yD3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sS&Z ,A  
*/ ,D\GGRw  
public void sort(int[] data) { )!g{Sbl  
int temp; RH}A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $F.([?)k?  
} 2^t#6XBk/  
}  hjO*~  
} OmM=o*d  
D+ ~_TA  
} wU#F_De)R:  
w ;daC(:  
冒泡排序: )uv=S;+  
p^(&qk?ut  
package org.rut.util.algorithm.support; r]W  
n~g)I&  
import org.rut.util.algorithm.SortUtil; 8 #ndFpu  
#j@71]GI  
/** /h v4x9  
* @author treeroot KXV[OF&J  
* @since 2006-2-2 Xtwun  
* @version 1.0 h' !imQ  
*/ ]$U xCu  
public class BubbleSort implements SortUtil.Sort{ |F.)zC5{  
Q'k\8'x  
/* (non-Javadoc) pV6d Id  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K^_i%~  
*/ Z%GTnG|rG  
public void sort(int[] data) { GDYFU* 0  
int temp; |QV!-LK  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !*2%"H*  
if(data[j] SortUtil.swap(data,j,j-1); LZ@|9!KDw  
} tBTTCwNT%  
}  tpy>OT$  
}  0l;<5  
} T#pk]c6Q  
O]f/r,4@  
} {JV@"t-X3"  
IVr 2y8K  
选择排序: lTU$0CG  
_C\[DR0n  
package org.rut.util.algorithm.support; /6O??6g  
0A{/B/r   
import org.rut.util.algorithm.SortUtil; B2Xn?i3 l  
H3{GmV8  
/** ^-FRTC  
* @author treeroot 2MA]jT  
* @since 2006-2-2 65ly2gl  
* @version 1.0 Rl|4S[  
*/ 6h3HDFS7s  
public class SelectionSort implements SortUtil.Sort { PA6=wfc  
, @m@S ^  
/* ?Qb<-~~ j1  
* (non-Javadoc) >;z<j$;F<  
* iYnEwAoN;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $,xnU.n  
*/ qo)?8kx>l  
public void sort(int[] data) { iTW? W\d  
int temp; Z ,^9 Z  
for (int i = 0; i < data.length; i++) { ?^:h\C^a"  
int lowIndex = i; K^r)CCO  
for (int j = data.length - 1; j > i; j--) { -T6(hT\  
if (data[j] < data[lowIndex]) {  -C#PQV  
lowIndex = j; y/V%&.$o=  
} pf4 ^Bk}e  
} iut`7  
SortUtil.swap(data,i,lowIndex); 9+,R`v  
} !L5jj#0  
} ^$%Z! uz  
nN$Y(2ZN  
} E{HY!L[  
\, !Q Jp4  
Shell排序: J/7R\;q`~o  
"o& E2#  
package org.rut.util.algorithm.support; %AF5=  
m8623D B"  
import org.rut.util.algorithm.SortUtil; 9;yn}\N `  
sBv>E}*R  
/** s<x1>Q7X~  
* @author treeroot 0iCPi)B  
* @since 2006-2-2 (h']a!  
* @version 1.0 q.Nweu!jQ  
*/ ?Z\Yu'  
public class ShellSort implements SortUtil.Sort{ LtT\z<bAI  
,mPnQ?  
/* (non-Javadoc) (BX83)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _w@qr\4i=  
*/ `ovtHl3Q  
public void sort(int[] data) { lq.Te,Y%w  
for(int i=data.length/2;i>2;i/=2){ \yrisp#`  
for(int j=0;j insertSort(data,j,i); $- +/$!  
} 0=wK:Ex  
} Ba\6?K  
insertSort(data,0,1); %7Kooq(i  
} HxK$4I`  
~.PP30 '  
/** ,? E&V_5  
* @param data OT %nrzP  
* @param j bg|!'1bD`5  
* @param i eMK+X \  
*/ AvR2_  
private void insertSort(int[] data, int start, int inc) { 4Z[V uQng  
int temp; PR<||"03  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4 !`bZ`_Bw  
} W{XkV Ke1a  
} ]IJRnVp%  
} /R X1UQ.s  
I PE}gp  
} XwM611  
Ql?^ B SqG  
快速排序: 6]Q3Yz^h  
l? #xAZx&_  
package org.rut.util.algorithm.support;  Do?P<x o  
xChI ,~i  
import org.rut.util.algorithm.SortUtil; 33:DH}  
'NZGQeb K  
/** m}VM+=  
* @author treeroot N132sN2   
* @since 2006-2-2 X fz`^x>M  
* @version 1.0 U7&x rif  
*/ ba@ax3  
public class QuickSort implements SortUtil.Sort{ _i}wK?n  
yh;Y,;4  
/* (non-Javadoc) (7lBID4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D-9\~gvh  
*/ `=tyN@VC  
public void sort(int[] data) { 1;u4X`8  
quickSort(data,0,data.length-1); zH)_vW  
} (.K\Jg'Y6j  
private void quickSort(int[] data,int i,int j){ _17|U K|N  
int pivotIndex=(i+j)/2; kL@Wb/K JP  
file://swap gL$&@NY  
SortUtil.swap(data,pivotIndex,j); lp&!lb`  
Ex@`O+  
int k=partition(data,i-1,j,data[j]); ~>ME'D~  
SortUtil.swap(data,k,j); ic6L9>[  
if((k-i)>1) quickSort(data,i,k-1); (g/7yO(s  
if((j-k)>1) quickSort(data,k+1,j); @b!"joEy  
HgJb4Fi  
} Ru%|}sfd  
/** ed~R>F>  
* @param data n1(?|aJ#1  
* @param i \Z)1 ?fq  
* @param j t> Q{yw  
* @return 1uG=`k8'k  
*/ -Q$nA>trKA  
private int partition(int[] data, int l, int r,int pivot) { fhp)S",  
do{ )&NAs  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vg%QXaM  
SortUtil.swap(data,l,r); ka7uK][  
} ,-*iCs<  
while(l SortUtil.swap(data,l,r); _ P ,@  
return l; vM0_>1nN  
} dK?); *w]  
Q/_#k/R  
} ,j9 80/  
K\=8eg93Z  
改进后的快速排序: J2Et-Cz1  
/MMtTB H  
package org.rut.util.algorithm.support; OS7R Qw1  
eO5ktEoJ  
import org.rut.util.algorithm.SortUtil; "h$R ]~eG  
f>iuHR*EXB  
/** =DgC C|p  
* @author treeroot #;j9}N  
* @since 2006-2-2 (}H ,ng'4  
* @version 1.0 VK .^v<Yo  
*/ g,lY ut  
public class ImprovedQuickSort implements SortUtil.Sort { hYt7kq!"  
Ygj6(2  
private static int MAX_STACK_SIZE=4096; ?9?4p@  
private static int THRESHOLD=10; = t+('  
/* (non-Javadoc) l:e9y$_)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K^ D82tP  
*/ 7c1+t_Ew  
public void sort(int[] data) { >[K?fJ$+  
int[] stack=new int[MAX_STACK_SIZE]; [!+D <Y  
Lo3-X  
int top=-1; W7e4pR?w  
int pivot; Lt<oi8'N  
int pivotIndex,l,r; c>MY$-PD  
B3b,F#  
stack[++top]=0; 'C]jwxy  
stack[++top]=data.length-1; o<\6Rm  
,?=KgG1i  
while(top>0){ qpgU8f  
int j=stack[top--]; >ZCo 8aK  
int i=stack[top--]; h;Mu[`  
oI$V|D3 9  
pivotIndex=(i+j)/2; EVz9WY  
pivot=data[pivotIndex]; Y?!/>q  
wixD\t59X  
SortUtil.swap(data,pivotIndex,j); 5Bj77?Z  
]7<m1Lg  
file://partition Sr7@buF  
l=i-1; @a;sV!S{  
r=j; O]_={%   
do{ TNsg pJ?\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a-Y6w5  
SortUtil.swap(data,l,r); GMb!Q0I8  
} eiB(VOJ  
while(l SortUtil.swap(data,l,r); `i4I!E  
SortUtil.swap(data,l,j); ,)uPGe"y  
Gc}0]!nrW9  
if((l-i)>THRESHOLD){ _h~p:=  
stack[++top]=i; L w*1 .~  
stack[++top]=l-1; ScHlfk p  
} It\BbG=  
if((j-l)>THRESHOLD){ a@k.$  
stack[++top]=l+1; jaa/k@OG  
stack[++top]=j; =F[lg?g  
} Ltg-w\?]  
6=BZ~ed  
} % &+|==-  
file://new InsertSort().sort(data); 8!6<p[_  
insertSort(data); scmto cm  
} "o<D;lO  
/** 0$?qoS  
* @param data FLEg0/m0  
*/ 5Q;dnC  
private void insertSort(int[] data) { v['AB4  
int temp; ?:JdRnH\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XWf7"]%SX  
} ZU^Q1}</5  
} wK ][qZ ]  
} >+f'!*%7He  
=_pmy>_z  
} (Z'WR  
SE-} XI\  
归并排序: Ol_/uy1r[  
mR6E]TuM  
package org.rut.util.algorithm.support; <EOg,"F  
M+\rX1T  
import org.rut.util.algorithm.SortUtil; B ;;cbY  
- Ra\^uz  
/** V3%Krn1'  
* @author treeroot p0?o<AA%O  
* @since 2006-2-2 krwf8!bI  
* @version 1.0 $<14JEU  
*/ -^y1iN'D  
public class MergeSort implements SortUtil.Sort{ !__D}k,  
JJ)y2  
/* (non-Javadoc) bQ i<0|S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kS[Dy$AB/2  
*/ rg"TJ"Q-  
public void sort(int[] data) { MQjG<O\  
int[] temp=new int[data.length]; rR3m' [  
mergeSort(data,temp,0,data.length-1); 6@i|Kw(:  
} YcEtgpz@  
0LZ=`tI  
private void mergeSort(int[] data,int[] temp,int l,int r){ `s#sE.=o  
int mid=(l+r)/2; ;}$Z 80  
if(l==r) return ; ,K`E&hS  
mergeSort(data,temp,l,mid); fc["  
mergeSort(data,temp,mid+1,r); z^ YeMe  
for(int i=l;i<=r;i++){ k q/t]%(  
temp=data; ^7J~W'hI  
} BJ_+z gf`  
int i1=l; Q|6Ls$'$  
int i2=mid+1; EaJDz`T}  
for(int cur=l;cur<=r;cur++){ ^n6)YX  
if(i1==mid+1) 6yy|V~5  
data[cur]=temp[i2++]; .ou!g&xu  
else if(i2>r) 1y_fQ+\2A  
data[cur]=temp[i1++]; O-y6!u$6&  
else if(temp[i1] data[cur]=temp[i1++]; 0EcC  
else (R9QBZP5  
data[cur]=temp[i2++]; N`y}Gs  
} NKupOJJq  
} Q:'qw#P/C  
Xp<A@2wt?  
} j;$6F/g  
Kx(76_XD  
改进后的归并排序: d08`42Z69  
^D% }V-"  
package org.rut.util.algorithm.support; GhSL%y  
m~Kch~~]  
import org.rut.util.algorithm.SortUtil; [8B tIv  
"#_)G7W+e  
/**  ;Puy A  
* @author treeroot !$%/ rQ9  
* @since 2006-2-2 JL}hOBqfI  
* @version 1.0 `@VM<av  
*/ 4*@G&v?n  
public class ImprovedMergeSort implements SortUtil.Sort { b#?ai3E  
$gj+v+%N  
private static final int THRESHOLD = 10; f}Ne8]U/Hc  
BLl%D  
/* tdMP,0u  
* (non-Javadoc) s0~05{  
* I?^Q084  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q\ \8b{~  
*/ bQ|#_/?  
public void sort(int[] data) { -D&.)N9ctQ  
int[] temp=new int[data.length]; \]L::"![?  
mergeSort(data,temp,0,data.length-1); 9^#zxmH)  
} &;r'{$  
-z>Z0viA  
private void mergeSort(int[] data, int[] temp, int l, int r) { k"3Z@Px:  
int i, j, k; oP43NN~  
int mid = (l + r) / 2; PMz{8 F  
if (l == r) XudH  
return; ZTgAZ5_cz  
if ((mid - l) >= THRESHOLD) $ DABR  
mergeSort(data, temp, l, mid); O]$*EiO\  
else V8KTNt%  
insertSort(data, l, mid - l + 1); O&rD4#  
if ((r - mid) > THRESHOLD) kb>Vw<NtE  
mergeSort(data, temp, mid + 1, r); kB$,1J$q  
else o1p$9PL\:  
insertSort(data, mid + 1, r - mid); ?:{0  
yP<:iCY  
for (i = l; i <= mid; i++) { OTNZ!U/)j  
temp = data; X1 0"G~0  
} LoV*YSDAY  
for (j = 1; j <= r - mid; j++) { FJn~ =hA  
temp[r - j + 1] = data[j + mid]; 4cErk)F4  
} c|R3,<Q]  
int a = temp[l]; N$ qNe'b  
int b = temp[r]; n}ZBU5_  
for (i = l, j = r, k = l; k <= r; k++) { \U<F\i  
if (a < b) { EE{#S  
data[k] = temp[i++]; Vx\# +)4  
a = temp; NejsI un%  
} else { DS[l,x  
data[k] = temp[j--]; 9Ww=hfb5UW  
b = temp[j]; D@lAT#vA  
} 5w,YBUp  
} Rrs`h `'-  
} a?U%l9F  
![X.%  
/** KOAz-h@6   
* @param data )z*$`?)k  
* @param l LfjS[  
* @param i WW8L~4Zy  
*/ @$b+~X)7  
private void insertSort(int[] data, int start, int len) { 4?*"7t3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 79c9 +  
} ,< )/45  
} u%gm+NneK  
} *"wD& E?  
} L2/<+ Zw  
ru6HnLhL  
堆排序:  \3y=0  
&:cTo(C'  
package org.rut.util.algorithm.support; 1 [~|  
\.{pZMM  
import org.rut.util.algorithm.SortUtil;  ]5)&36  
|qudJucV  
/** $Zu4tuXA  
* @author treeroot L[[H&#\  
* @since 2006-2-2 wHN` - 5%  
* @version 1.0 !i"9f_  
*/ Velbq  
public class HeapSort implements SortUtil.Sort{ s$nfY.C  
t&Y^W <  
/* (non-Javadoc) dv4r\ R^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ][$$  =  
*/ ]zM90$6  
public void sort(int[] data) { "6 Hj ji@A  
MaxHeap h=new MaxHeap(); n4d(`  
h.init(data); dE9aE#o  
for(int i=0;i h.remove(); \8>N<B)  
System.arraycopy(h.queue,1,data,0,data.length); 3Ns:O2|  
} ?[>BssW  
)mo|.L0  
private static class MaxHeap{ *}WqYqOow  
dU04/]modD  
void init(int[] data){ aid)q&AcQ  
this.queue=new int[data.length+1]; T?}=k{C]  
for(int i=0;i queue[++size]=data; $, @ rKRY  
fixUp(size); 5bqYi  
} ewff(e9  
} fS$Yl~-m?  
xyJgHbml  
private int size=0; r'JK$9  
I8pxo7(-  
private int[] queue; BxN#Nk~  
wCEfR!i  
public int get() { 6V_5BpXt  
return queue[1]; FVLA^$5c  
} apWrcaj  
w7ABnX  
public void remove() { _q!ck0_  
SortUtil.swap(queue,1,size--); 0PX@E-n  
fixDown(1); "@<g'T0  
} PT*@#:MA  
file://fixdown ++RmaZ  
private void fixDown(int k) { $/(/v?3][e  
int j; sAAIyPJts  
while ((j = k << 1) <= size) { kd2'-9  
if (j < size %26amp;%26amp; queue[j] j++; "lj:bxM2C  
if (queue[k]>queue[j]) file://不用交换 vH:+  
break; C&K(({5O  
SortUtil.swap(queue,j,k); K>p:?w  
k = j; )t 7HioQ  
} hdDI%3vk3  
} I)4|?tb ?  
private void fixUp(int k) { 3G0\i!*t  
while (k > 1) { RPqn#B  
int j = k >> 1; t $ ~:C  
if (queue[j]>queue[k]) o\YdL2:X  
break; Yy:sZJ  
SortUtil.swap(queue,j,k); j3'/jk]\  
k = j; )$.9Wl Q  
} Jx[e{o)o  
} 7.'j~hJL  
\}&w/.T  
} Xpz-@fqKdf  
8k}CR)3@C  
} !Dn1 pjxc  
6E%k{ r  
SortUtil: {*  _ W  
sSb&r  
package org.rut.util.algorithm; g(/O)G.  
[9Hm][|Ph  
import org.rut.util.algorithm.support.BubbleSort; Zl/+HU~  
import org.rut.util.algorithm.support.HeapSort; VH*(>^Of F  
import org.rut.util.algorithm.support.ImprovedMergeSort; #3jZ7RqzQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; $w}aX0dK&  
import org.rut.util.algorithm.support.InsertSort; e"09b<69  
import org.rut.util.algorithm.support.MergeSort; fA,!d J  
import org.rut.util.algorithm.support.QuickSort; ~oyPmIcb  
import org.rut.util.algorithm.support.SelectionSort; c=mFYsSv  
import org.rut.util.algorithm.support.ShellSort; ::t !W7W  
qoq<dCt3  
/** \3UdC{~  
* @author treeroot Xc<9[@  
* @since 2006-2-2 ;L{y3CWT  
* @version 1.0 x?$Y<=vT  
*/ g4932_tC  
public class SortUtil { Wsz9X;  
public final static int INSERT = 1; (bXp1*0 ;  
public final static int BUBBLE = 2; ?["ZEa  
public final static int SELECTION = 3; v<4X;4p^  
public final static int SHELL = 4; X*;p;N  
public final static int QUICK = 5; <AXYqH7%A  
public final static int IMPROVED_QUICK = 6; g[Y$SgJ  
public final static int MERGE = 7; cA^7}}?e  
public final static int IMPROVED_MERGE = 8; p`ZGV97  
public final static int HEAP = 9; /FXfu  
3@A k6Uh  
public static void sort(int[] data) { VdrF=V&] O  
sort(data, IMPROVED_QUICK); 7m$/.\5  
} "@Fxfd+Ot  
private static String[] name={ [C#pMLp,~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }gt~{9?c  
}; AY]nc# zz  
>.A:6  
private static Sort[] impl=new Sort[]{ kE|#mI[>  
new InsertSort(), od|.E$B  
new BubbleSort(), m/h0J03'T  
new SelectionSort(), :H 7 "W<  
new ShellSort(), L*38T\  
new QuickSort(), A`8If  
new ImprovedQuickSort(), \/G Y0s  
new MergeSort(), IVKE dwA  
new ImprovedMergeSort(), w, wt<@}  
new HeapSort() h Nwb.[  
}; vUNE! j  
z AIC5fvu  
public static String toString(int algorithm){ G 0 yt%qHE  
return name[algorithm-1]; n40Z  
} gr7_oJ:R  
4j{ }{  
public static void sort(int[] data, int algorithm) { woKdI)f $  
impl[algorithm-1].sort(data); ^u74WN  
} bL%)k61G_v  
 '%4,!  
public static interface Sort { )$i3j 1[;  
public void sort(int[] data);  q\"$~*  
} 2:yv:7t/  
NI)nf;C  
public static void swap(int[] data, int i, int j) { ];YOP%2   
int temp = data; jTIn@Q  
data = data[j]; cm<3'#~Q?  
data[j] = temp; pcG q  
} HmKE>C/  
} xg&vZzcl  
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