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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。 nC??exc  
插入排序: iRG6Cw2  
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package org.rut.util.algorithm.support; T5T[$%]6  
p*YV*Arv  
import org.rut.util.algorithm.SortUtil; j)iUg03>/4  
/** M($GZ~ b%A  
* @author treeroot ".#h$  
* @since 2006-2-2 ,g"JgX  
* @version 1.0 UEYJd&n0CB  
*/ (0_zp`)  
public class InsertSort implements SortUtil.Sort{ j%Uoigi  
4u41M,nJQd  
/* (non-Javadoc) 4JO 16  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PGYx] r  
*/ mO]dP;,  
public void sort(int[] data) { p g_H'0R  
int temp; 4sH?85=j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8o $ ` '  
} Z}>;@c  
} tBl (E  
} _;S~nn  
N0\<B-8+,>  
} ; }ThBb3  
.V UnOdI  
冒泡排序: RVs=s}|>*  
UFj!7gX]  
package org.rut.util.algorithm.support; h>!9N dzG  
Pl`Nniy  
import org.rut.util.algorithm.SortUtil; "K+EZ%~<  
d1 kE)R  
/** QX=x^(M$m  
* @author treeroot 4)'U!jSb  
* @since 2006-2-2 m] -cRf)9  
* @version 1.0 HN5,MD[  
*/ 0B}2~}#  
public class BubbleSort implements SortUtil.Sort{ tAY{+N]f  
pW>{7pXn  
/* (non-Javadoc) d:#tN4y7(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aS\$@41"  
*/ B/!/2x  
public void sort(int[] data) { ###>0(n  
int temp; @tD (<*f+  
for(int i=0;i for(int j=data.length-1;j>i;j--){  j},i=v  
if(data[j] SortUtil.swap(data,j,j-1); G\V*j$}!  
} 6Q_A-X3hk  
} S)4p'cUwq  
} {0-rnSjC  
} <l5m\A  
'!,(G3  
} Eciu^  
~#}T|  
选择排序: g0B%3v  
*vvm8ik  
package org.rut.util.algorithm.support; F*>#Xr~/  
={N1j<%fh  
import org.rut.util.algorithm.SortUtil; wEJzLFCn  
`r~3Pf).4  
/** ;YW@ 3F-h  
* @author treeroot W7!iYxO  
* @since 2006-2-2 u*,>$(-u  
* @version 1.0 |d*a~T0  
*/ kLU-4W5t  
public class SelectionSort implements SortUtil.Sort { X ,^([$  
AYN dV(  
/* aW{5m@p{"  
* (non-Javadoc) VY+P c/b  
* /@\R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /wt7KL- I  
*/ 8UqH"^9.Q7  
public void sort(int[] data) { v}d)uPl} ;  
int temp; &vn2u bauS  
for (int i = 0; i < data.length; i++) { hwJ>IQ1  
int lowIndex = i; U,;796h  
for (int j = data.length - 1; j > i; j--) { ugE!EEy[^  
if (data[j] < data[lowIndex]) { UXJblo#  
lowIndex = j; !Hl]&  
} ]W`?0VwF  
} IM/xBP  
SortUtil.swap(data,i,lowIndex); NlKVl~_ C  
} *vuI'EbM  
} $D!/v)3  
\U>&W  
} ThI}~$Y  
<<A#4!f  
Shell排序: vIOGDI>  
oeZuvPCl  
package org.rut.util.algorithm.support; %'2.9dB  
}YFM4 0H  
import org.rut.util.algorithm.SortUtil; :=ek~s.UV  
Zp~yemERr  
/** PE4 L7  
* @author treeroot /3~L#jS  
* @since 2006-2-2 ~o"=4q`>  
* @version 1.0 &s vg<UZ  
*/ _Tor9Tj  
public class ShellSort implements SortUtil.Sort{ e7xBi!I)~  
{>msE }L  
/* (non-Javadoc) *S:~U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zHX\h [0f  
*/ cVL|kYVWT  
public void sort(int[] data) { "N6HX*  
for(int i=data.length/2;i>2;i/=2){ [=q/f2_1.  
for(int j=0;j insertSort(data,j,i); hoqZb<:  
} %N<5ST>(  
} goIv m:?  
insertSort(data,0,1); C:t>u..  
} QTi@yT:  
{jB> ]7  
/** .c+U=bV-  
* @param data $e7%>*?m  
* @param j xyk%\&"7  
* @param i uv/\1N;V3  
*/ w8 :[w  
private void insertSort(int[] data, int start, int inc) { h2Nt@  
int temp; d/Q#Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vu*e*b$}  
} H}F UgA;  
} N<rq}^qo  
} m1pA]}Y/5o  
Z&Ob,Ru  
} 3)EJws!  
zK5&,/  
快速排序: 'cpm 4mT  
=SLG N`m3  
package org.rut.util.algorithm.support; AyO%,6p[  
UF!qp  
import org.rut.util.algorithm.SortUtil; GB|>eZLv<  
q!:dZES  
/** c36p+6rJk=  
* @author treeroot p*Q-o  
* @since 2006-2-2 #]jl{K\f#X  
* @version 1.0 S=r0tao,!v  
*/ ^\ x'4!W  
public class QuickSort implements SortUtil.Sort{ 2]mV9B   
Qf( A  
/* (non-Javadoc) %JE>Z]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1;(h0j  
*/ ~ZVz sNrx  
public void sort(int[] data) { / rc[HbNg.  
quickSort(data,0,data.length-1); $@'BB=i  
} k 3m_L-  
private void quickSort(int[] data,int i,int j){ P$U" y/  
int pivotIndex=(i+j)/2; HQP.7.w7 5  
file://swap F `o9GLxM}  
SortUtil.swap(data,pivotIndex,j); $$m0mK  
&NBH'Rt  
int k=partition(data,i-1,j,data[j]); kAEq +{h  
SortUtil.swap(data,k,j); csW\Q][  
if((k-i)>1) quickSort(data,i,k-1); 0fewMS*  
if((j-k)>1) quickSort(data,k+1,j); E_=F' sP?  
:u,.(INB  
} ~Tt@ v`}  
/** U}jGr=tu  
* @param data eI:[o  
* @param i Ge`7`D>L  
* @param j |s! _;6  
* @return lV^#[%  
*/ #1haq[Uv7  
private int partition(int[] data, int l, int r,int pivot) { "BSY1?k{  
do{ k";dK*hD,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /#Pm'i>B  
SortUtil.swap(data,l,r); cIwX sx  
} !tTv$L>  
while(l SortUtil.swap(data,l,r); <CVX[R]U  
return l; h7+"*fN  
} Z(6.e8fK  
"]=OR>  
} /^xv1F{  
5.5kH$;>  
改进后的快速排序: clU ?bF~e1  
q#3T L<  
package org.rut.util.algorithm.support; r:V bjmL  
iO*5ClB  
import org.rut.util.algorithm.SortUtil; /}@F q  
\L(jNN0_R  
/** vy~6]hH  
* @author treeroot D 1.59mHsD  
* @since 2006-2-2 [l^XqD D4  
* @version 1.0 bji#ID2]%  
*/ p'LLzc##  
public class ImprovedQuickSort implements SortUtil.Sort { 6k0Awcr  
]@9W19=P!P  
private static int MAX_STACK_SIZE=4096; N>3{!K>/Y:  
private static int THRESHOLD=10; Kq")|9=d  
/* (non-Javadoc) *66EkCj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 75H!i$(*+  
*/ Pa{DB?P  
public void sort(int[] data) { #tZ!D^GQHq  
int[] stack=new int[MAX_STACK_SIZE]; ^ q ba<#e  
b&!}SZ  
int top=-1; /{buFX2"}  
int pivot; fASklcQ  
int pivotIndex,l,r; z#RwgSPw6  
5(#z)T  
stack[++top]=0; pm+E)z6Yo  
stack[++top]=data.length-1; w +UB XW  
uD{-a$6z  
while(top>0){ 8ZV!ld  
int j=stack[top--]; X_-/j.  
int i=stack[top--]; ISZEP8w  
){/n7*#Th%  
pivotIndex=(i+j)/2; RoHX0   
pivot=data[pivotIndex]; W!el[@  
fATnza  
SortUtil.swap(data,pivotIndex,j); Se??E+aX  
&:d`Pik6  
file://partition -"Kjn`8  
l=i-1; qtVgjT2#H  
r=j; 0@' -g^PS  
do{ q\P{h ij  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lnl>!z  
SortUtil.swap(data,l,r); : [?7,/w  
}  w D  
while(l SortUtil.swap(data,l,r); I&8!V)r)  
SortUtil.swap(data,l,j); Y]&2E/oc  
R90chl   
if((l-i)>THRESHOLD){ {IB4%,qT  
stack[++top]=i; Ktuv a3=>N  
stack[++top]=l-1; !+hw8@A  
} h/aG."U  
if((j-l)>THRESHOLD){ Ki :98a$  
stack[++top]=l+1; L!5="s[}  
stack[++top]=j; jxw8jo06:  
} vKbGG   
>4lA+1JYk  
} U z)G Y  
file://new InsertSort().sort(data); 1- GtZ2  
insertSort(data); I*+*Wf  
} (:# 4{C  
/** yW(A0  
* @param data  vO;:~  
*/ [HRP&jr  
private void insertSort(int[] data) { ui*CA^ Y  
int temp; ~:4Mf/Ca  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #0M,g  
} 1B`0.M'd  
} mhnK{M @56  
} y-7$HWn  
J$Ba*`~!!  
} !8%{(;(  
9fb"R"(M  
归并排序: gl6*bB=  
KA {Y*m^7  
package org.rut.util.algorithm.support; "IsDL^)A9  
}qdGS<{  
import org.rut.util.algorithm.SortUtil;  ^pZ\:  
)e:u 6]  
/** XS"lR |  
* @author treeroot ~C],?X(zk  
* @since 2006-2-2 a?9Ka!O4s  
* @version 1.0 X5D}<J2"  
*/ `BHPj p>  
public class MergeSort implements SortUtil.Sort{ ;GxKPy  
i;B)@op.#  
/* (non-Javadoc) (f|3(u'e?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t@EHhiBz  
*/ "#mr?h_  
public void sort(int[] data) { lGZ^ 8  
int[] temp=new int[data.length]; :X;' 37o#q  
mergeSort(data,temp,0,data.length-1); <}$o=>'  
} IGd]!  
f#UT~/~bL2  
private void mergeSort(int[] data,int[] temp,int l,int r){ H-o>| C  
int mid=(l+r)/2; `8%2F}x}qD  
if(l==r) return ; !bG%@{WT  
mergeSort(data,temp,l,mid); k%)QrRnB  
mergeSort(data,temp,mid+1,r); e" f/  
for(int i=l;i<=r;i++){ ,9W|$2=F  
temp=data; P'6eK?  
} i`R}IP?71  
int i1=l; 257pO9]  
int i2=mid+1; 4~3 N;]X  
for(int cur=l;cur<=r;cur++){ K uz /  
if(i1==mid+1) I|*w?i*  
data[cur]=temp[i2++]; [Az<E3H"  
else if(i2>r) 7Rf${Wv0  
data[cur]=temp[i1++]; P"LbWZ6Nj  
else if(temp[i1] data[cur]=temp[i1++]; qJb9JL$s  
else OsMU>v }m  
data[cur]=temp[i2++]; T\VKNEBo  
} ^#T@NN0T  
} zU;%s<(p  
eot]VO:  
} dC$z q~q  
K]{Y >w  
改进后的归并排序: A~_*vcz  
5G"DgG*<  
package org.rut.util.algorithm.support; 7cTDbc!E-  
$[L~X M  
import org.rut.util.algorithm.SortUtil; ,iKL 68  
!e5!8z  
/** hSQuML   
* @author treeroot 9?5'>WO  
* @since 2006-2-2 &DQyJJ`k  
* @version 1.0 )YE3n-~7{  
*/ R_IUuz$e  
public class ImprovedMergeSort implements SortUtil.Sort { zq 1je2DB  
I8R#EM%C#  
private static final int THRESHOLD = 10; TYv'#{  
SvZ~xTit  
/* EDQKbTaPt  
* (non-Javadoc) #aX+?z\4  
* r%`g` It  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (_h=|VjK(I  
*/ 77KB-l2  
public void sort(int[] data) { ]S@zhQ  
int[] temp=new int[data.length]; ?VUU[h8"v5  
mergeSort(data,temp,0,data.length-1); T_\Nvzb}  
} N|JM L  
dY=]ES} `  
private void mergeSort(int[] data, int[] temp, int l, int r) { _C`&(?}  
int i, j, k; O52B  
int mid = (l + r) / 2; Y -yozt  
if (l == r) >:o$h2  
return; voX4A p l  
if ((mid - l) >= THRESHOLD) t QR qQ  
mergeSort(data, temp, l, mid); Q y4eDv5  
else azhilUD8  
insertSort(data, l, mid - l + 1); ]|m?pt  
if ((r - mid) > THRESHOLD) GZefeBi  
mergeSort(data, temp, mid + 1, r); a/wg%cWG_  
else "A( D}~i  
insertSort(data, mid + 1, r - mid); \wjT|z1+Y  
WswM5RN  
for (i = l; i <= mid; i++) { v(0IQ  
temp = data; Ez1-Nx  
} 14~#k%zO(  
for (j = 1; j <= r - mid; j++) { G;ihm$Cad  
temp[r - j + 1] = data[j + mid]; m|uVmg!*  
} wiFA 3_\G  
int a = temp[l]; /wi*OZ7R  
int b = temp[r]; QBYY1)6S,  
for (i = l, j = r, k = l; k <= r; k++) { ?]%ZJd  
if (a < b) { PIHix{YR  
data[k] = temp[i++]; >rhqhmh;W"  
a = temp; $x/VO\Z{-  
} else { N,bH@Q.Ci  
data[k] = temp[j--]; u<U8LR=)V5  
b = temp[j]; YB+My~fw{l  
} []-<-TqJ  
} 6fm oI K{  
} V8O-|7H$ v  
5oe{i/#di  
/** r0Zj'F_e  
* @param data /g>]J70  
* @param l r,<p#4(>_  
* @param i *qA:%m3  
*/ /pC60y}O0  
private void insertSort(int[] data, int start, int len) { yRivf.wH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Sa-" G`  
} |fB/hs \  
} 3V]08  
} cte Wl/v  
} 7*kTu0m  
-C2[ZP-  
堆排序: ?L|Ai\|  
b w!  
package org.rut.util.algorithm.support; n0FzDQt26  
6"9(ce KX  
import org.rut.util.algorithm.SortUtil; 6s t^-L  
q26 qY5D  
/** *Oq& g\K)  
* @author treeroot R"{P#U,HNO  
* @since 2006-2-2 sD9OV6^{?K  
* @version 1.0 dt Br#Te  
*/ zCS&w ~  
public class HeapSort implements SortUtil.Sort{ ~ %Ij5PD  
 O[$XgPM  
/* (non-Javadoc) E_0i9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }((P)\s  
*/ \'&,9lP  
public void sort(int[] data) { z%nplG'~|  
MaxHeap h=new MaxHeap(); )K]<\Q[  
h.init(data); !/]z-z2>  
for(int i=0;i h.remove(); EgRuB@lw76  
System.arraycopy(h.queue,1,data,0,data.length); i&-g  
} sRQ4pnnrn  
d>0 j!+s  
private static class MaxHeap{ O4!!*0(+91  
_`Dz%(c  
void init(int[] data){ (rQ)0g@  
this.queue=new int[data.length+1]; Bw.?Me)mf|  
for(int i=0;i queue[++size]=data; P )[QC  
fixUp(size); N_p^DP   
} /px`FuJI(  
} Yez  
`a8&7 J(  
private int size=0; Q) iN_|  
-AXMT3p=1  
private int[] queue; @9g!5dcT  
n*hRlL  
public int get() { ze`qf%  
return queue[1]; qX]ej 2  
} KA."[dVa  
R/&C}6G n  
public void remove() { % %QAC4  
SortUtil.swap(queue,1,size--); )J&!>GP  
fixDown(1); eD N%p  
} y9Q"3LLic`  
file://fixdown 9z(h8H  
private void fixDown(int k) { a;0$fRy  
int j; [~ |e:  
while ((j = k << 1) <= size) { _1?Fy u&<5  
if (j < size %26amp;%26amp; queue[j] j++; yXA]E.K!  
if (queue[k]>queue[j]) file://不用交换 MP`WU}2  
break; .w)T2(  
SortUtil.swap(queue,j,k); 0'Qo eFKG  
k = j;  \4&FW|mx  
} Vt U  
} b"z9Dpv  
private void fixUp(int k) { <*&2b  
while (k > 1) { [u`9R<>c"U  
int j = k >> 1; w5}2$r  
if (queue[j]>queue[k]) (?zZvW8  
break; \6v*c;ZF  
SortUtil.swap(queue,j,k); ]i pltR7k  
k = j; # FV`*G  
} VUGVIy.  
} 7ip(-0  
W= \gPCo  
} lr@H4EJ{  
gw9:1S  
} =9vmRh? 8  
'|N9xL m  
SortUtil: o*WI*Fb'  
})}-K7v1+  
package org.rut.util.algorithm; &tE#1<k  
kihO~<  
import org.rut.util.algorithm.support.BubbleSort; h|Uy!?l  
import org.rut.util.algorithm.support.HeapSort; .%EEly  
import org.rut.util.algorithm.support.ImprovedMergeSort; L1E\^)  
import org.rut.util.algorithm.support.ImprovedQuickSort; l~Sn`%PgA  
import org.rut.util.algorithm.support.InsertSort; &4O0}ax*Zm  
import org.rut.util.algorithm.support.MergeSort; 675x/0}GO  
import org.rut.util.algorithm.support.QuickSort; xN#. Pm~  
import org.rut.util.algorithm.support.SelectionSort; nY<hfqof  
import org.rut.util.algorithm.support.ShellSort; _*Z2</5  
f i3<  
/** -3T6ck  
* @author treeroot \WVrn>%xu  
* @since 2006-2-2 xdH*[  
* @version 1.0 glppb$oB\  
*/ (9J,Qs[;  
public class SortUtil { Mb(aI!;A  
public final static int INSERT = 1; Gm.n@U p  
public final static int BUBBLE = 2; }9xEA[@;  
public final static int SELECTION = 3; X|7Y|0o  
public final static int SHELL = 4; Dyj5a($9"{  
public final static int QUICK = 5; &@xixbg  
public final static int IMPROVED_QUICK = 6; pc w^W  
public final static int MERGE = 7; ArUGa(; f  
public final static int IMPROVED_MERGE = 8; ;?i(WV}ee  
public final static int HEAP = 9; XY8s\DK  
5"5D(  
public static void sort(int[] data) { Rt<8 &.m4  
sort(data, IMPROVED_QUICK); iG*/m><-  
}  wNW9xmS  
private static String[] name={ 8_K22]c5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RTNUHz;{L  
}; MX?K3=j @>  
x aWmwsym  
private static Sort[] impl=new Sort[]{ ":*PC[)W  
new InsertSort(), ++:vO  
new BubbleSort(), ubIGs| p2c  
new SelectionSort(), 92GO.xAD?  
new ShellSort(), 6v0^'}  
new QuickSort(), 2@o_7w98  
new ImprovedQuickSort(), !p1OBS|  
new MergeSort(), SQ)$>3>C  
new ImprovedMergeSort(), #{GUu ',?&  
new HeapSort() m u(HNj  
}; W 0Q-&4  
<w}k9(Ds  
public static String toString(int algorithm){ UcDJ%vI  
return name[algorithm-1]; 50(/LV1  
} {>G\3|^D  
l0g#&V--  
public static void sort(int[] data, int algorithm) { -Xkdu?6Eh  
impl[algorithm-1].sort(data); @<\f[Znto  
} ~ @Ib:M  
jcN84AaRFI  
public static interface Sort { Pv`yOx&nE  
public void sort(int[] data); Nm#VA.~  
} A L}c-#GG  
i)\`"&.j>N  
public static void swap(int[] data, int i, int j) { -c%GlpZw  
int temp = data; R 3 Eh47  
data = data[j]; ?};}#%971  
data[j] = temp; (80]xLEBL  
} JTpKF_Za<  
} TvAA  
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