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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。 IHo6&  
插入排序: } 2)s%  
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package org.rut.util.algorithm.support; LTtfOcrt  
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import org.rut.util.algorithm.SortUtil; m ]K.0E  
/** =10t3nA1$  
* @author treeroot -"a+<(Y  
* @since 2006-2-2 xel&8 `  
* @version 1.0 ~.x!st}  
*/ @-b}iP<T  
public class InsertSort implements SortUtil.Sort{ {=g-zsc]K  
?EX'j >  
/* (non-Javadoc) 8d)F#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _n}!1(xYa`  
*/  b9y E  
public void sort(int[] data) { 59^@K"J  
int temp; '*3+'>   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iMp)g%Ng  
} A{6ZEQAh>  
} Y\p yl  
} LwGcy1F.  
x2ol   
} }UGPEf\  
J*U(f{Q(  
冒泡排序: "-xC59,  
:{66WSa@Dd  
package org.rut.util.algorithm.support; 1|gP :t}  
KH KqE6  
import org.rut.util.algorithm.SortUtil; &`TX4b^/!  
Y,(eu*Za  
/** DR0W)K ^  
* @author treeroot <O>Q;}>gfc  
* @since 2006-2-2 uEi!P2zN  
* @version 1.0  Uero!+_  
*/ Ew;<iY[  
public class BubbleSort implements SortUtil.Sort{ mG@Q}Y(  
bY>o%LL-  
/* (non-Javadoc) 4UL-j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I$ mOy{/#  
*/ Ew:JpMR  
public void sort(int[] data) { AN~1E@"  
int temp; 6U /wFT!7$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a|7V{pp=M  
if(data[j] SortUtil.swap(data,j,j-1); H1?1mH  
} K5.C*|w  
} [U jbox  
} |\_O8=B%  
} +Zr03B  
95!xTf  
} "Z{^i3 gN  
v;$^1I  
选择排序: nlmkkTHF8  
I'@ }Yjm|  
package org.rut.util.algorithm.support; bm+ Mr  
DSjo%Brd-  
import org.rut.util.algorithm.SortUtil; k Dv)g  
hsE!3[[  
/** 1QN]9R0`#7  
* @author treeroot W.67, 0m$  
* @since 2006-2-2 &1[5b8H;+  
* @version 1.0 Xl aNR+  
*/ %eah=e  
public class SelectionSort implements SortUtil.Sort { lT:<ZQyjT  
8D n]`}ok  
/* r=w%"3vb^  
* (non-Javadoc) TRq~n7Y7C  
* vv8$u3H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rxli;blzi  
*/ U=yD!  
public void sort(int[] data) { 0?:ZERv  
int temp;  ]t=>#  
for (int i = 0; i < data.length; i++) { ry< P LRN  
int lowIndex = i; xxiLi46/  
for (int j = data.length - 1; j > i; j--) { 'RA[_Z  
if (data[j] < data[lowIndex]) { =0:hrg+Zgx  
lowIndex = j; ~xJD3Qf  
} E+2y-B)E  
} Z~nl{P#  
SortUtil.swap(data,i,lowIndex); ?eO|s5r  
} 8r|LFuI  
} 1Jd:%+T  
08` @u4  
} S; c=6@"  
{l6]O  
Shell排序: )b7mzDp(  
dG rA18  
package org.rut.util.algorithm.support; p>zE/Pw~  
g<C})84y3  
import org.rut.util.algorithm.SortUtil; B 3h<K}  
m,KY_1%M  
/** vP?yl "U  
* @author treeroot M`<D Z<:<  
* @since 2006-2-2 -?(RoWv@X&  
* @version 1.0 a@a1/ 3  
*/ /0c&!OP  
public class ShellSort implements SortUtil.Sort{ Kq?7#,_  
4J_%quxO  
/* (non-Javadoc) 1)R)+`y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z%KChU  
*/ Qh[t##I/  
public void sort(int[] data) { H xlw1(zS  
for(int i=data.length/2;i>2;i/=2){ t}tKm  
for(int j=0;j insertSort(data,j,i); 4Klfnki  
} l>iU Q&V  
} 96.Wfx  
insertSort(data,0,1); <#Lw.;(U;k  
} "+WR[-n>\  
/7#&qx8  
/** ^ UzF nW@a  
* @param data 8tL61x{]  
* @param j xpxm9ySwu  
* @param i 4 5lg&oO  
*/ q- Qws0\v.  
private void insertSort(int[] data, int start, int inc) { 4_Jdh48-d  
int temp; TGNeEYr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L$xRn/\  
} P2p^jm   
} k Mo)4 Xp  
} _e 3'f:  
5^dw!^d  
} C;5}/J^E  
1fy{@j(W  
快速排序: UE4#j \  
cTnbI4S;  
package org.rut.util.algorithm.support; Y'5ck(  
f+6l0@K2  
import org.rut.util.algorithm.SortUtil; p(G?  
uS'ji k}  
/** {<2Zb N?  
* @author treeroot |$t0cd  
* @since 2006-2-2 T42g4j/l~  
* @version 1.0 LTe7f8A  
*/ ,fw[J  
public class QuickSort implements SortUtil.Sort{ H1[aNwLr  
zi ,Rk.  
/* (non-Javadoc) agYK aM1N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K9q~Vf  
*/ `O{Uz?#*x  
public void sort(int[] data) { $-RhCnE  
quickSort(data,0,data.length-1); "!tB";n  
} Mb>XM7}PU  
private void quickSort(int[] data,int i,int j){ ="DgrH  
int pivotIndex=(i+j)/2; f#~Re:7.c  
file://swap ge[i&,.&z  
SortUtil.swap(data,pivotIndex,j); 7N"Bbl  
["}A#cO652  
int k=partition(data,i-1,j,data[j]); IT(c'}  
SortUtil.swap(data,k,j); t}7wR TG  
if((k-i)>1) quickSort(data,i,k-1); m}9V@@  
if((j-k)>1) quickSort(data,k+1,j); DR /)hAE  
 vt N5{C  
} uFm-HR@4  
/** DVJc-.x8  
* @param data VO Qt{v{1|  
* @param i arP+(1U  
* @param j pqSE|3*l  
* @return pJz8e&wyLM  
*/ 2YKM9Ks  
private int partition(int[] data, int l, int r,int pivot) { J [ H?nX9  
do{ r!^\Q7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9pcf jx..  
SortUtil.swap(data,l,r); d_+8=nh3  
} hYn'uL^~[  
while(l SortUtil.swap(data,l,r); 6bNW1]rD  
return l; ,[\(U!Z7:%  
} d_uy;-3  
*u/|NU&X  
} 0EOX@;}  
s%oAsQ_y  
改进后的快速排序: #P#R~b]  
$:[BB ,$  
package org.rut.util.algorithm.support; 0*?XQV@  
>!1f`  
import org.rut.util.algorithm.SortUtil; s8[9YfuW  
4C%>/*%8>  
/** ?+5{HFx  
* @author treeroot I_G>W3  
* @since 2006-2-2 !&O/7ywe  
* @version 1.0 A#X.c=  
*/ V(u2{4gZ  
public class ImprovedQuickSort implements SortUtil.Sort { C|\^uR0  
d~jtWd|?  
private static int MAX_STACK_SIZE=4096; 2\{uq v  
private static int THRESHOLD=10; Db=>7@h3C  
/* (non-Javadoc) e:LZs0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ud>Z;X=P  
*/ }+ 2"?f|]  
public void sort(int[] data) { ~8t}*oV   
int[] stack=new int[MAX_STACK_SIZE]; ?d<:V.1U@  
GB?#1|,  
int top=-1; w3qf7{b  
int pivot; rA,Y_1b *  
int pivotIndex,l,r; !rg0U<bO!  
@>2rz  
stack[++top]=0; _c8.muQ<  
stack[++top]=data.length-1; 82za4u$q#  
XDk o{jEJ  
while(top>0){ )8 :RiG2B  
int j=stack[top--]; xH_ie  
int i=stack[top--]; xY0QGQca  
N!BOq`#da  
pivotIndex=(i+j)/2; x7Rq|NQ  
pivot=data[pivotIndex]; t;dQ~e20  
`B\KS*Gya#  
SortUtil.swap(data,pivotIndex,j); R+K&<Rz  
x}<G!*3  
file://partition V`,[=u?c  
l=i-1; n>:c}QAJH  
r=j; R}wwC[{  
do{ d Zz^9:C+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9/daRq$  
SortUtil.swap(data,l,r); qM>OE8c#/  
} {Okik}Oh  
while(l SortUtil.swap(data,l,r); o+-Ge J  
SortUtil.swap(data,l,j); >|/ ? Up  
udD* E~1q  
if((l-i)>THRESHOLD){ 7G[ GHc>  
stack[++top]=i; 7e4tUAiuU  
stack[++top]=l-1; SKSAriS~  
} ~5 pC$SC6>  
if((j-l)>THRESHOLD){ 5V nr"d  
stack[++top]=l+1; (U'7Fc  
stack[++top]=j; ( ssH=a  
} 1gShV ]2  
8U2 wH  
}  ,eeL5V  
file://new InsertSort().sort(data); +%}5{lu_e  
insertSort(data); CDW(qq-zD  
} EB2^]?  
/** 39T&c85  
* @param data ys[i`~$  
*/ |<3Q+EB^  
private void insertSort(int[] data) { K;y\[2;}e,  
int temp; b6!Q!:GO&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J4Z<Yt/  
} y:|.m@ j1  
} ?Y0$X>nm  
} av; (b3Lq  
M,\|V3s  
} '5xuT _  
Ec*--]j*c  
归并排序: y>7VxX0xi  
<Xs @ \  
package org.rut.util.algorithm.support; bOxjm`B<  
W_BAb+$aF  
import org.rut.util.algorithm.SortUtil;  _WDBG  
0J:U\S  
/** m{lRFKx>s  
* @author treeroot h"BhTx7E}  
* @since 2006-2-2 &Qq/Xi,bZ  
* @version 1.0 GrLM${G  
*/ *]:G7SW{  
public class MergeSort implements SortUtil.Sort{ +A'q#~yILa  
Jl}!CE@-  
/* (non-Javadoc) >|_gT%]5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v;bM.OL  
*/ -Ty<9(~S  
public void sort(int[] data) { qN1e{T8u  
int[] temp=new int[data.length]; uF]D  
mergeSort(data,temp,0,data.length-1); #>E3'5b   
} 4lY&=_K[)  
UYcyk $da  
private void mergeSort(int[] data,int[] temp,int l,int r){ dWW-tHv#  
int mid=(l+r)/2; PK-}Ldj  
if(l==r) return ; q-3J.VLJ5H  
mergeSort(data,temp,l,mid); G {pP}  
mergeSort(data,temp,mid+1,r); dEQReD  
for(int i=l;i<=r;i++){ 'TK$ndy;7}  
temp=data; KM_)7?`  
} []=FZ`4  
int i1=l; C NzSBm  
int i2=mid+1; cy&  
for(int cur=l;cur<=r;cur++){ yRq8;@YGY  
if(i1==mid+1)  u]1-h6  
data[cur]=temp[i2++]; }P&1s,S8J#  
else if(i2>r) m0BG9~p|  
data[cur]=temp[i1++]; uFrJ:l+  
else if(temp[i1] data[cur]=temp[i1++]; A{i][1N  
else x;ERRK  
data[cur]=temp[i2++]; $vgmoJ@X0  
} 5S|}:~7T  
} q*F~~J!P  
(5Z8zNH`3  
} 8g# c%eZ  
c6?c>*z  
改进后的归并排序: V(lK`dY  
GG@I!2,_  
package org.rut.util.algorithm.support; YoV^xl6g  
t3  uB  
import org.rut.util.algorithm.SortUtil; e-%7F]e  
k lP{yxU'n  
/** xI`Uk8-8  
* @author treeroot |iwM9oO%  
* @since 2006-2-2 %S >xSqX  
* @version 1.0 _ bXVg3oDt  
*/ ,yHzo  
public class ImprovedMergeSort implements SortUtil.Sort { pjX%LsX\  
(6ohrM>Q  
private static final int THRESHOLD = 10; &# vk4C_8m  
7GBZA=J  
/* Q>}e IQ Y  
* (non-Javadoc) A=v lC?&Z  
* j{Yt70Wv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jpYw#]Q  
*/ fH#F"^ A  
public void sort(int[] data) { <?> I\  
int[] temp=new int[data.length]; ny!lj a5[  
mergeSort(data,temp,0,data.length-1); :Bx+WW&P.i  
} <t?x 'r?@  
0%h [0jGj  
private void mergeSort(int[] data, int[] temp, int l, int r) { ; d, JN  
int i, j, k; KA|&Q<<{@  
int mid = (l + r) / 2; 27Kc -rcB  
if (l == r) |MOn0 *  
return; Xmf  
if ((mid - l) >= THRESHOLD) $n=W2WJ6f  
mergeSort(data, temp, l, mid); <O,'5+zG%  
else ++Rdv0~  
insertSort(data, l, mid - l + 1); M&|sR+$^  
if ((r - mid) > THRESHOLD) S4l)TtY  
mergeSort(data, temp, mid + 1, r); dJdD"xj  
else G zJ9N`  
insertSort(data, mid + 1, r - mid); {+@ms$z  
QmWC2$b  
for (i = l; i <= mid; i++) { wo7N7R5  
temp = data; ['51FulDR  
} $?]@_=  
for (j = 1; j <= r - mid; j++) { F9m2C'U  
temp[r - j + 1] = data[j + mid]; Ur_ S [I  
} jsk:fh0~M  
int a = temp[l]; ]6a/0rg:t  
int b = temp[r]; Ek"YM[  
for (i = l, j = r, k = l; k <= r; k++) { \S=XIf  
if (a < b) { |uQn|"U4  
data[k] = temp[i++]; qO:U]\P  
a = temp; \ &eY)^vw  
} else { =gMaaGg p,  
data[k] = temp[j--]; '+)6#/*  
b = temp[j]; ^#a#<8Jz  
} VRtbHam  
} &%|xc{i  
} i;[h 9=\/  
x\Nhix}1D  
/** D 7Gd%  
* @param data f0-RhR  
* @param l &q ," !:L]  
* @param i >QYh}Z- /%  
*/ ;el]LnV!O  
private void insertSort(int[] data, int start, int len) { 5S&aI{;9<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q Axf5  
} L]c 8d   
} q6;OS.f  
} lSZ"y Q+  
} + $k07mb\  
 O]e6i%?  
堆排序: )HJK '@  
7^kH8qJ)  
package org.rut.util.algorithm.support; RtW4 n:c  
> [Xm|A#  
import org.rut.util.algorithm.SortUtil; 2. StG(Y!  
_Ct}%-,4  
/** H "Q(2I  
* @author treeroot 3mpP| b"  
* @since 2006-2-2 { M`  
* @version 1.0 L\QQjI{  
*/ qJ\X~5{  
public class HeapSort implements SortUtil.Sort{ Z 7`5x  
8pX f T%]  
/* (non-Javadoc) mBw2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1zdYBb6;j  
*/ \1=T sU&^  
public void sort(int[] data) { rER~P\-  
MaxHeap h=new MaxHeap(); f2uZK!:m  
h.init(data); UqD5 A~w  
for(int i=0;i h.remove(); fdd~e52f  
System.arraycopy(h.queue,1,data,0,data.length); PLO\L W  
} "F&Tnhh4  
LTg?5GwD\j  
private static class MaxHeap{ \ua9thOG  
kFS0i%Sr  
void init(int[] data){ QH& %mr.S  
this.queue=new int[data.length+1]; qsI{ b<n  
for(int i=0;i queue[++size]=data; |!$ Q<-]f  
fixUp(size); p])D)FsMB  
} {&u Rd?(  
} k%"$$uo  
]MC/t5vCu  
private int size=0; 6o$Z0mG  
iYkRo>3!QX  
private int[] queue; "EJ\]S]$X  
OZ eiH X!  
public int get() { 8r2XGR  
return queue[1]; , yTN$K%M  
} {;U}:Dx  
w+Ad$4Pf"  
public void remove() { G"}qV%"6"  
SortUtil.swap(queue,1,size--); )$MS 0[?  
fixDown(1); Jm?l59bv v  
} (&q@~ dJ  
file://fixdown w#W5}i&x  
private void fixDown(int k) { AdDQWJ^r  
int j; t$aVe"uM  
while ((j = k << 1) <= size) { |__d 8a  
if (j < size %26amp;%26amp; queue[j] j++; H!p!sn  
if (queue[k]>queue[j]) file://不用交换 %(fL?  
break; |d5ggf .w  
SortUtil.swap(queue,j,k); Q%rVo4M#2  
k = j; k"t >He  
} C,[ L/!  
} P~&O4['<  
private void fixUp(int k) { TLy ;4R2Nn  
while (k > 1) { QyTh!QM~`  
int j = k >> 1; h!QjpzQe  
if (queue[j]>queue[k]) x]H3Y3  
break; ^GN5vT+:'  
SortUtil.swap(queue,j,k); `hzd|GmX  
k = j; ]OUD5T  
} c qv .dC  
} %cS#+aK6M'  
nZe\5`  
} AmZuo_  
bG52s  
} ~Hs=z$  
cnbo +U  
SortUtil: HTw#U2A;+  
`Rrr>vj  
package org.rut.util.algorithm;  KvGbDG  
S45'j(S=  
import org.rut.util.algorithm.support.BubbleSort; OthG7+eF  
import org.rut.util.algorithm.support.HeapSort; /\~l1.6`  
import org.rut.util.algorithm.support.ImprovedMergeSort; R;%^j=Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; NOV.Bs{ yL  
import org.rut.util.algorithm.support.InsertSort; 8:~b &>   
import org.rut.util.algorithm.support.MergeSort; miPmpu!  
import org.rut.util.algorithm.support.QuickSort; FWIih5 3`  
import org.rut.util.algorithm.support.SelectionSort; L+Eu d  
import org.rut.util.algorithm.support.ShellSort; 9w zwY[{  
!`Le`c  
/** b"^\)|*4;  
* @author treeroot Xp#~N_S$  
* @since 2006-2-2 /GyEVCc  
* @version 1.0 o94P I*.  
*/ Ohc^d"[7  
public class SortUtil { hRk,vB ]  
public final static int INSERT = 1; _<XgC\4O|  
public final static int BUBBLE = 2; k/U>N|5  
public final static int SELECTION = 3; B+|IZoR  
public final static int SHELL = 4; 2f `&WUe  
public final static int QUICK = 5;  -W9gH  
public final static int IMPROVED_QUICK = 6; 9g96 d-  
public final static int MERGE = 7; ci;&CHa  
public final static int IMPROVED_MERGE = 8; -7&?@M,u  
public final static int HEAP = 9; Ny]lvgu9X  
r-*l1([eW  
public static void sort(int[] data) { Rw/Ciw2@?  
sort(data, IMPROVED_QUICK); N_0pO<<cs  
} ::ri3Tu  
private static String[] name={ O6/xPeak  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c+H)ed>  
}; wBLsz/  
ZH!;z-R  
private static Sort[] impl=new Sort[]{ }H5/3be  
new InsertSort(), hc"6u\>  
new BubbleSort(), <M=';h^w2  
new SelectionSort(), GZ <nXU>  
new ShellSort(), W|0My0y  
new QuickSort(), sSNCosb  
new ImprovedQuickSort(), ),yH=6  
new MergeSort(), IOX:yxj  
new ImprovedMergeSort(), 2HSb.&7-G  
new HeapSort() #.o0mguU  
}; Q]^Yi1PbS  
<;aJ#qT  
public static String toString(int algorithm){ !KAsvF,j  
return name[algorithm-1]; 9]Lo  
} `wf|uM  
Ep<YCSQy$i  
public static void sort(int[] data, int algorithm) { RU7!U mf  
impl[algorithm-1].sort(data); QsM*wT&aa  
} A=0@UqM  
Qd?CTYNsv  
public static interface Sort { 1c / X  
public void sort(int[] data); bK?MT]%}r  
} ]r!QmWw~V  
8sH50jeP  
public static void swap(int[] data, int i, int j) { BO]=vH  
int temp = data; v"/TmiZ  
data = data[j]; ZOC#i i`:  
data[j] = temp; F'rt>YvF  
} T30Zk*V  
} ",T` \8&@e  
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