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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。 Y~1}B_  
插入排序: i=_leC)rl  
sb4)@/Q7j  
package org.rut.util.algorithm.support; %u }|4BXoh  
322W"qduTZ  
import org.rut.util.algorithm.SortUtil; Qv8#{y@U  
/** T\c;Ra  
* @author treeroot X[k-J\  
* @since 2006-2-2 A(_AOoA'  
* @version 1.0 B%6bk.  
*/ a#H=dIj  
public class InsertSort implements SortUtil.Sort{ Ary$,3X2  
nR/; uTTz  
/* (non-Javadoc) Td[w<m+p<P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ga f/0/|  
*/ 0w\X  
public void sort(int[] data) { DjOFfD\MF  
int temp; "b%hAdR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2a.NWJS  
} pALB[;9g  
} )xQxc.  
} 0vG}c5;F  
hM\QqZFyp  
} Te'^O,C)y$  
hx4!P(o1  
冒泡排序: g|<)J-`Q  
=khjD[muC  
package org.rut.util.algorithm.support; 3FUZTX]Q1  
$Br^c< y  
import org.rut.util.algorithm.SortUtil; P@9>4}r$  
N=D Ynz_~  
/** 4:r^6m%%  
* @author treeroot zq!2);,  
* @since 2006-2-2 $Fz/&;KX!  
* @version 1.0 !Go(8`>  
*/ VK`_ Qc#B  
public class BubbleSort implements SortUtil.Sort{ W3UK[_qK  
`m<="No  
/* (non-Javadoc) /p\Ymq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =@pm-rI|-  
*/ xHsH .f_{  
public void sort(int[] data) { `^AbFV 3  
int temp; 6(9Ta'ywZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lk.Q6saI1  
if(data[j] SortUtil.swap(data,j,j-1); gbpm::  
} k6JB%m\E  
} 8e\a_R*(|  
} i`&yPw  
} ]kb%l"&  
vzi=[A  
} b]RCe^E1  
344,mnAd  
选择排序: j,/o0k,  
D\({]oj]  
package org.rut.util.algorithm.support; >[|:cz  
#*S/Sh?Q  
import org.rut.util.algorithm.SortUtil; W}L =JJo},  
eE7 R d>  
/** jLr8?Hyf  
* @author treeroot |D]jdd@!a2  
* @since 2006-2-2 q 4 Ye  
* @version 1.0 `m2F.^qrr  
*/ DDAqgx  
public class SelectionSort implements SortUtil.Sort { $#R.+B  
([f6\Pw\ <  
/* x?CjRvT $  
* (non-Javadoc) uzp !Y&C  
* Va=0R   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AN: ,t(w  
*/ f~Kln^  
public void sort(int[] data) { @Jvw"=  
int temp; q<c).4  
for (int i = 0; i < data.length; i++) { [&NF0c[i  
int lowIndex = i; R$6Y\ *L[  
for (int j = data.length - 1; j > i; j--) { :@: R4Ac  
if (data[j] < data[lowIndex]) { =m}{g/Bk  
lowIndex = j; 2gt08\  
} U^pe/11)H  
} I$f:K]|.m!  
SortUtil.swap(data,i,lowIndex); Fi5,y;]R  
} Ce5 }+A}  
} K:'pK1zy  
FC]? T  
} S}Mxm 2  
!@VmaAT  
Shell排序: Kjz,p^Y\  
44%::Oh  
package org.rut.util.algorithm.support; >5^Z'!Z"  
[*}[W6 3v  
import org.rut.util.algorithm.SortUtil; U7PA%  
)%^oR5W  
/** 4D58cR}  
* @author treeroot I*lq0&  
* @since 2006-2-2 boN)C?"^h  
* @version 1.0 *[.\ S3K`  
*/ 7ZZSAI  
public class ShellSort implements SortUtil.Sort{ 2A`EFk7_X  
1M 3U)U  
/* (non-Javadoc) SF.,sCk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d=>5%$:v  
*/ 0*g psS  
public void sort(int[] data) { uN$X3Ls_  
for(int i=data.length/2;i>2;i/=2){ TP^.]I O-  
for(int j=0;j insertSort(data,j,i); %J|EDf ,M  
} 8l='Hl  
} R1P,0Yf  
insertSort(data,0,1); WO)K*c1F  
} e'\I^'`!M  
p~3CXmUc~  
/** ir]uFOj  
* @param data sXhtn' <v  
* @param j up:e0di{  
* @param i o.Cj+`0}5  
*/ -q+Fj;El  
private void insertSort(int[] data, int start, int inc) { 3[V|C=u0  
int temp; !/jx4 w~R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p^L6uM  
} qbP[  9  
} ^1Yx'ua'  
} JWn9&WK  
u%1k  
} if[o?6U4t  
ho]!G498  
快速排序: MupW=3.38  
C$td{tM  
package org.rut.util.algorithm.support; #!Cter2  
#G  +  
import org.rut.util.algorithm.SortUtil; -Bo~"q  
hRa(<ZK  
/** #f3;}1(  
* @author treeroot KCh  
* @since 2006-2-2 Ym.l@(  
* @version 1.0 Rs F3#H  
*/ G(OT"+O,  
public class QuickSort implements SortUtil.Sort{ nN`Z0?  
QYTTP6 Gz+  
/* (non-Javadoc) yEUNkZ5^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PWk ?8dL-  
*/ y{`(|,[  
public void sort(int[] data) { @>Ghfh>~D  
quickSort(data,0,data.length-1); &:;;u\  
} f;Bfh3  
private void quickSort(int[] data,int i,int j){ .p(6' TYnI  
int pivotIndex=(i+j)/2; Q_kT}6#(J=  
file://swap Z0ncN])  
SortUtil.swap(data,pivotIndex,j); =tc`:!$  
_:g GD8  
int k=partition(data,i-1,j,data[j]); S $_Y/x  
SortUtil.swap(data,k,j); /iTUex7T  
if((k-i)>1) quickSort(data,i,k-1); >1r[]&8  
if((j-k)>1) quickSort(data,k+1,j); B221}t  
|)?aH2IL  
} K Z!N{.Jk  
/** wyrI8UY  
* @param data hD$p;LF  
* @param i rO(TG  
* @param j T018)WrhL  
* @return c BHL,  
*/ ,%?; \?b%h  
private int partition(int[] data, int l, int r,int pivot) { WS1&3mOd  
do{ prlyaq;4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G/fP(o-Wd  
SortUtil.swap(data,l,r); c+8>EU AW  
} J+@MzkpK  
while(l SortUtil.swap(data,l,r); 5X`w&(]m  
return l; +f X}O9  
} H-_^TB  
D/S>w(=  
} M9Nk=s! 3  
qIDWl{b<  
改进后的快速排序: m@G<ZCMZ  
FDVI>HK @  
package org.rut.util.algorithm.support; E/~"j  
!dyxE'T2  
import org.rut.util.algorithm.SortUtil; pkXfsi-Nu  
Z6IJo%s  
/** H~?*KcZ 0\  
* @author treeroot L}}=yh6r  
* @since 2006-2-2 29a_ZU7e6  
* @version 1.0 hJw |@V  
*/ FQk_#BkK  
public class ImprovedQuickSort implements SortUtil.Sort { j<ABO")v  
%tzN@  
private static int MAX_STACK_SIZE=4096; s; B j7]  
private static int THRESHOLD=10; ?qg^WDs$  
/* (non-Javadoc) [y|^P\D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T_@[k  
*/ p.rdSv(8'  
public void sort(int[] data) { smfG, TI  
int[] stack=new int[MAX_STACK_SIZE]; !2zo]v4?  
Uz6{>OCvk|  
int top=-1; c~gNH%1XN  
int pivot; 'v\1:zi  
int pivotIndex,l,r; &/ >;LgN  
>JKnGeF  
stack[++top]=0; xvwD3.1  
stack[++top]=data.length-1; ),cQUB  
oLrkOn/aY  
while(top>0){  xFBh?  
int j=stack[top--]; @-wNrW$  
int i=stack[top--]; SY%A"bC  
cBz!U 8(  
pivotIndex=(i+j)/2; ZnvEv;P  
pivot=data[pivotIndex]; V!T^wh;  
wr$cK'5ZL  
SortUtil.swap(data,pivotIndex,j); BIxV|\k  
h8f!<:rTS  
file://partition '1W!xQ}E  
l=i-1; r{t. c?/  
r=j; MV"E?}0  
do{ @sc8}"J]#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n-b>m7O(  
SortUtil.swap(data,l,r); k{gl^  
} 42rj6m\  
while(l SortUtil.swap(data,l,r); fL ~1  
SortUtil.swap(data,l,j); A Gv!c($  
0+T*$=?  
if((l-i)>THRESHOLD){ K\RWC4  
stack[++top]=i; J+ Jt4  
stack[++top]=l-1; AMbKN2h1f  
} `Y\gSUhzS  
if((j-l)>THRESHOLD){ yGb a  
stack[++top]=l+1; F&=I7i  
stack[++top]=j; !]$V9F{K  
} ;[(= kOI  
i&'#+f4t  
} ]Nnxnp  
file://new InsertSort().sort(data); @GN(]t&3  
insertSort(data); <Q2u)m'  
} kCj`V2go  
/** N]B)Fb  
* @param data VZ\O9lD  
*/ ^oS$>6|  
private void insertSort(int[] data) { X AQGG>  
int temp; PT3>E5`Nu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =WIE>*3[  
} 4bP13f  
} an3~'g?  
} AXz-4,=xX  
:lUX5j3  
} sW }<zGYd  
V?OuIg%=:  
归并排序: ^#]c0  
?nQ_w0j  
package org.rut.util.algorithm.support; *i@sUM?K  
Fj S%n$  
import org.rut.util.algorithm.SortUtil; H5~1g6b@  
3pB}2]  
/** ]JH64~a  
* @author treeroot YPu9Q  
* @since 2006-2-2 ?N:B  
* @version 1.0 {S G*  
*/ *D2Nm9sl  
public class MergeSort implements SortUtil.Sort{ +}P%HH]E/p  
<"<Mbbp  
/* (non-Javadoc) &,J*_F<s2<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M|d={o9Hp  
*/ djW cbC=g_  
public void sort(int[] data) { hw;0t,1  
int[] temp=new int[data.length]; _}D%iJg#  
mergeSort(data,temp,0,data.length-1); grr'd+_e  
} aS el* L  
Re>AsnA[  
private void mergeSort(int[] data,int[] temp,int l,int r){ l09Fn>wa  
int mid=(l+r)/2; u^Vh .g]  
if(l==r) return ; Z.quh;  
mergeSort(data,temp,l,mid); _1ew(x2J  
mergeSort(data,temp,mid+1,r); |pJC:woq  
for(int i=l;i<=r;i++){ g+/0DO_F3  
temp=data; o7.e'1@  
} $*k)|4  
int i1=l; D}-o+6TI?  
int i2=mid+1; u#1%P5r&X  
for(int cur=l;cur<=r;cur++){ ]Kv q |}=  
if(i1==mid+1) q(78fZ *X  
data[cur]=temp[i2++]; 3QW_k5o  
else if(i2>r) ^K+:C;Q|  
data[cur]=temp[i1++]; Jm4#V~w  
else if(temp[i1] data[cur]=temp[i1++]; w!\3ICB  
else TXjloGv^  
data[cur]=temp[i2++]; 'TL2%T/)t  
} 9e!vA6Fx  
} -IadHX}]t  
n@hl2M6.x9  
} >L gVj$Z  
xRlYr# %  
改进后的归并排序: B@ {&<  
,of]J|  
package org.rut.util.algorithm.support; P^pFqUL7#  
w]nX?S8  
import org.rut.util.algorithm.SortUtil; Z&Ue|Z4Qt  
+c--&tBo  
/** iwU[6A  
* @author treeroot =Q-k'=6\  
* @since 2006-2-2 );Z]SGd  
* @version 1.0 Ry?4h\UX5  
*/ e # 5BPI  
public class ImprovedMergeSort implements SortUtil.Sort { LEZ&W ;bCo  
;$7v%Ls=  
private static final int THRESHOLD = 10; PnA?+u2m  
8u>gbdU  
/* \:Za[6  
* (non-Javadoc) ; DDe.f"  
* Q8q@Y R#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zsj`F9*e  
*/ e`iEy=W  
public void sort(int[] data) { :lgi>^  
int[] temp=new int[data.length]; Ow@v"L;jF!  
mergeSort(data,temp,0,data.length-1); EiWd+v,QJQ  
} $ KB  
*nRNg.i3D  
private void mergeSort(int[] data, int[] temp, int l, int r) { s5&=Bsv  
int i, j, k; (Sv>NQp  
int mid = (l + r) / 2; v*z(@<Y  
if (l == r) {:bN/zV#  
return; 0}]SUe^  
if ((mid - l) >= THRESHOLD) uFG<UF  
mergeSort(data, temp, l, mid); gzf-)J  
else e"k/d<  
insertSort(data, l, mid - l + 1); OX\$nQ\o  
if ((r - mid) > THRESHOLD) W\8Ln>  
mergeSort(data, temp, mid + 1, r); Z(e ^iH  
else b*EXIzQ  
insertSort(data, mid + 1, r - mid); r8[T&z@_  
-:<lkq&/  
for (i = l; i <= mid; i++) { [|RjHGf  
temp = data; /:Lu_)5   
} E7nFb:zlV  
for (j = 1; j <= r - mid; j++) { _w!a`w*3  
temp[r - j + 1] = data[j + mid]; ;h Hi@Z 9  
} 20tO#{Li  
int a = temp[l]; aC!EWgwW[  
int b = temp[r]; gmP9j)V6  
for (i = l, j = r, k = l; k <= r; k++) { 19t{|w<  
if (a < b) { z)-c#F@%  
data[k] = temp[i++]; P`(Mk6gE  
a = temp; DMn4ll|  
} else { $ 4m*kQ  
data[k] = temp[j--]; $SY]fNJQ  
b = temp[j]; I4t*?  
} D#Kuo$  
} ^zr^ N?a  
} `VT>M@i/  
|^a;77nE_^  
/** _mJG5(|  
* @param data G$bJ+  
* @param l !yJICjXj  
* @param i wRvb8F 0  
*/ 3@<zg1.9-  
private void insertSort(int[] data, int start, int len) { 0N;%2=2_E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DHw<%Z-J  
} W0I4Vvh_"  
} 8)j@aiF`  
} eE(b4RCM  
} 7TX2&kMoc  
xZ.!d.rn  
堆排序: np9dM  
MYdO jcN  
package org.rut.util.algorithm.support; `<frgXu64  
[ f/I2  
import org.rut.util.algorithm.SortUtil; -c*\o3)  
swcd&~9r  
/** 8sOQ9  
* @author treeroot O;uG?.\  
* @since 2006-2-2 ,$lemH1d  
* @version 1.0 i=S~(gp  
*/ vB0RKk}d5  
public class HeapSort implements SortUtil.Sort{ L]%l51U  
kmPYx)o  
/* (non-Javadoc) 646JDX[o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g)"gw+ZFc  
*/ sG7u}r  
public void sort(int[] data) { mtAE  
MaxHeap h=new MaxHeap(); ?C-Towo=i  
h.init(data); 78 f$6J q  
for(int i=0;i h.remove(); kz} R[7  
System.arraycopy(h.queue,1,data,0,data.length); GVGlVAo|@  
} V3Z]DA  
g}LAks  
private static class MaxHeap{ 0#_'o ,  
i3$$,W!  
void init(int[] data){ d+eZub94U  
this.queue=new int[data.length+1]; }UwO<#  
for(int i=0;i queue[++size]=data; tc+WWDP#"  
fixUp(size); I\O\,yPhhP  
} 3uWkc3  
} }<a^</s  
SmwQET<H  
private int size=0; h^UKT`9vt  
#W>QY Tp  
private int[] queue; <AH1i@4  
+Vb8f["+-  
public int get() { V!_71x\-Q  
return queue[1]; KqY["5p  
} uVE.,)xz  
q*7<)VwI  
public void remove() { PNs~[  
SortUtil.swap(queue,1,size--); =FP0\cQ.  
fixDown(1); 4GdX/6C.  
} 58Xzup_"  
file://fixdown Yr.sm!xA  
private void fixDown(int k) { ^TY ;Zp  
int j; "Jq8?FoT  
while ((j = k << 1) <= size) { (V`Md\NL`  
if (j < size %26amp;%26amp; queue[j] j++; i%m"@7.kk  
if (queue[k]>queue[j]) file://不用交换 Mj#-j/{x{5  
break; &#`l;n:]+  
SortUtil.swap(queue,j,k); 1\*\?\T>_  
k = j; /D&%v *~E  
} {76c%<`WaP  
} HBS\<}  
private void fixUp(int k) { 4`m~FNVS   
while (k > 1) { G 2bDf-1ew  
int j = k >> 1; x!LQxoNF  
if (queue[j]>queue[k]) t]jFo  
break; *g}Yw  
SortUtil.swap(queue,j,k); 8BOZh6BV  
k = j; ,l YE  
} W!Hm~9fz  
} ^&@w$  
>@xrs  
} &Mq~T_S  
\>LnLH(  
} L!0OC''C  
2WX7nK;I  
SortUtil: J]l rS  
(.w Ie/  
package org.rut.util.algorithm; wI]"U2L5  
tz4 ]qOH8  
import org.rut.util.algorithm.support.BubbleSort; ^z1&8k"[^  
import org.rut.util.algorithm.support.HeapSort; KqBk~-G  
import org.rut.util.algorithm.support.ImprovedMergeSort; #} ~qqJ G2  
import org.rut.util.algorithm.support.ImprovedQuickSort; -}O1dEn.  
import org.rut.util.algorithm.support.InsertSort; vE@!{*  
import org.rut.util.algorithm.support.MergeSort; ^k5ll=}  
import org.rut.util.algorithm.support.QuickSort; )'17r82a  
import org.rut.util.algorithm.support.SelectionSort; <h%O?mkC  
import org.rut.util.algorithm.support.ShellSort; {;toI  
gb ^?l~SS  
/** MFTk qbc  
* @author treeroot J;_}lF9d@  
* @since 2006-2-2 X[`bMa7IB(  
* @version 1.0 b2aF 'y/  
*/ EVp,Q"V]  
public class SortUtil { wW>zgTG  
public final static int INSERT = 1; xh7cVE[UM  
public final static int BUBBLE = 2;  ]#7zk9  
public final static int SELECTION = 3; }bY; q-  
public final static int SHELL = 4; 2 rw%H  
public final static int QUICK = 5; 1) ta  
public final static int IMPROVED_QUICK = 6; BdlVabQyKW  
public final static int MERGE = 7; 7K)6^r^  
public final static int IMPROVED_MERGE = 8; I2nF-JzD2a  
public final static int HEAP = 9; 3vcO!6Z5  
t`*!w|}(1  
public static void sort(int[] data) { ~\{^%~[48  
sort(data, IMPROVED_QUICK); *Qugv^-  
} ~U;rw&'H  
private static String[] name={ S*j6OwZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3"o"fl  
}; s! n<}C  
(WJ${OW  
private static Sort[] impl=new Sort[]{ ? A(QyaKz  
new InsertSort(), xX*H7#  
new BubbleSort(), wP[t0/dl  
new SelectionSort(), !vG'J\*xc  
new ShellSort(), WVVJ  
new QuickSort(), f|O{#AC  
new ImprovedQuickSort(), Q+g!V5'  
new MergeSort(), b Q]/?cCYV  
new ImprovedMergeSort(), (Qa/EkE^*w  
new HeapSort() Cmc3k,t  
}; foJdu+^  
,9WBTH8  
public static String toString(int algorithm){ aW>6NDq(  
return name[algorithm-1]; bh^LIU  
} $<:E'^SAS  
`PY>Hgb  
public static void sort(int[] data, int algorithm) { [9 Ss# ~  
impl[algorithm-1].sort(data); sC9&Dgkk  
} K~@Mg1R  
'1M7M(va  
public static interface Sort { 0eK*9S]  
public void sort(int[] data); W 4F\}A  
} k0T?-iM  
)M)7"PC  
public static void swap(int[] data, int i, int j) { v\p;SwI   
int temp = data; \&H nKhI  
data = data[j]; *S/_i-ony  
data[j] = temp; H$I =W>;  
} L!=QR8?@E  
} a4irokJv#  
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