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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。 cTR@ :sm  
插入排序: TZ]D6.mD  
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package org.rut.util.algorithm.support; j/FFxlFNL  
cS'|c06  
import org.rut.util.algorithm.SortUtil; Yzr|Z7r q}  
/** KH<f=?b  
* @author treeroot )$Erfu  
* @since 2006-2-2 >c~ Fg s  
* @version 1.0 lAM"l)Ij  
*/ YMSA[hm  
public class InsertSort implements SortUtil.Sort{ wd/"! A4(  
5GP,J,J  
/* (non-Javadoc) 42Gv]X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sKkk+-J4  
*/ 5DHFxym'  
public void sort(int[] data) { /kAu&}  
int temp; P7||d@VW,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pV3o\bk!  
} V ?10O  
} jM E==)Y  
} },2mIit(  
} h.]sF  
} Rw54`_kFEB  
t/=xY'7  
冒泡排序: 7%-+7O3ud  
!1:364  
package org.rut.util.algorithm.support; ~vVsxC$.  
Wa8?o~0"L  
import org.rut.util.algorithm.SortUtil; @"6dq;"  
hY?x14m$3  
/** m|RA@sY%`  
* @author treeroot p.gaw16}>  
* @since 2006-2-2 gX}(6RP_!  
* @version 1.0 Y+k)d^6r  
*/ &wlSOC')j  
public class BubbleSort implements SortUtil.Sort{ P(1 bd"Q  
,~!rn}MI<  
/* (non-Javadoc) Sc<%$ Gd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) llf|d'5Nl  
*/ w2!5Cb2  
public void sort(int[] data) { H!D?;X  
int temp; vsjl8L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O>=D1no*  
if(data[j] SortUtil.swap(data,j,j-1); )V}u}5  
} uKI2KWU?2  
} .H,wdzg)  
} `XwFH#_  
} %lw!4Z\gg  
S z3@h"  
} FQbF)K~e  
6S;-fj  
选择排序: f$lf(brQ:  
Ol,Tw=?  
package org.rut.util.algorithm.support; qc*z`Wz:  
}}";)}C`  
import org.rut.util.algorithm.SortUtil; PKT/U^2X]  
(W7cQ>  
/**  $)5F3 a|  
* @author treeroot L{hP&8$k  
* @since 2006-2-2 7>g^OE f  
* @version 1.0 _?M71>3$.  
*/ s uT#k3  
public class SelectionSort implements SortUtil.Sort { +v 9@du  
'g8~uP  
/* I e#LZti  
* (non-Javadoc) ~*|0yPFg  
* 26Y Y1T\B)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  )"im|9  
*/ vwZrvjP2  
public void sort(int[] data) { -?A,N,nnX  
int temp; < c[+60p"  
for (int i = 0; i < data.length; i++) { #6[7q6{ 4  
int lowIndex = i; : kVEB<G  
for (int j = data.length - 1; j > i; j--) { .c[v /SB]  
if (data[j] < data[lowIndex]) { MCOz-8@|Y  
lowIndex = j; =R08B)yR  
} r@_`ob RW;  
} aj1o   
SortUtil.swap(data,i,lowIndex); %)7HBj(*J  
} 'J&&F2O%  
} s V70a 3#  
!5rja-h  
} SBnwlM"AN  
:nuMakZZ  
Shell排序: Yg5m=Lis  
wG1A]OJl1  
package org.rut.util.algorithm.support; niZ/yW{w  
@$R[Js%MuO  
import org.rut.util.algorithm.SortUtil; f^8,Z+n  
p}qNw`  
/** C.r9)#G  
* @author treeroot |22~.9S  
* @since 2006-2-2 -kp! .c  
* @version 1.0 >&0)d7Nu8m  
*/ uTN mt]  
public class ShellSort implements SortUtil.Sort{ ;?/v}$Pa  
Ou~|Q&f'  
/* (non-Javadoc) $7{|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;><9R@0  
*/ 6Q&R,"!$p  
public void sort(int[] data) { 5*=a*nD11  
for(int i=data.length/2;i>2;i/=2){ rrGsam\.  
for(int j=0;j insertSort(data,j,i); .JNU3%s  
} $V$|"KRcs  
} Sm;EWz-?  
insertSort(data,0,1); D2$"!7O1H  
} sK~d{)+T  
*R17 KMS  
/** 2QUZAV\ Y  
* @param data eGrC0[SH  
* @param j >gAq/'.Q  
* @param i p?OwcMT]M  
*/ WN?1J4H  
private void insertSort(int[] data, int start, int inc) { :eQ?gM!,  
int temp; S/j~1q_|G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8U8l 5r  
} |];s[^$#  
} $9v:(:!Bm  
} y6|&bJ @  
T<*i($ [  
}  =(kwMJ  
(>*<<a22  
快速排序: JO:40V?op  
zmf`}j[  
package org.rut.util.algorithm.support; 5}3Q}o#  
38IVSK_  
import org.rut.util.algorithm.SortUtil; ;H5H7ezV  
3%Jg' Tr+  
/** d[+xLa  
* @author treeroot sy+o{] N  
* @since 2006-2-2 r40#-A$  
* @version 1.0 jHPJk8@y  
*/ #/'5N|?  
public class QuickSort implements SortUtil.Sort{ )Yvf9dl  
ar.w'z  
/* (non-Javadoc) 7dl]f#uZU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JV|GE n\@N  
*/ C<CE!|sfr  
public void sort(int[] data) { FHVZ/ e  
quickSort(data,0,data.length-1); @,i_ KN6C  
} o/E A%q1  
private void quickSort(int[] data,int i,int j){ ^7C?yC  
int pivotIndex=(i+j)/2; 0Y#S2ty  
file://swap #87:Or1  
SortUtil.swap(data,pivotIndex,j); 7bioLE  
Ug=8:a(U.  
int k=partition(data,i-1,j,data[j]); t?p[w&@M2  
SortUtil.swap(data,k,j); M9{?gM9  
if((k-i)>1) quickSort(data,i,k-1); b?-Ep?G'\  
if((j-k)>1) quickSort(data,k+1,j); )>q.!"B  
7_ g}t!b`  
} ;\=W=wL(  
/** hv 18V>8  
* @param data yyJ4r}TE  
* @param i _K{hq<g  
* @param j ^g`1SU`  
* @return SGn:f>N  
*/ #z{9:o7[-  
private int partition(int[] data, int l, int r,int pivot) { {.tUn`j6V  
do{ YC\~PVG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hPt(7E2ke~  
SortUtil.swap(data,l,r); <7TE[M'  
} 5KJN](x+  
while(l SortUtil.swap(data,l,r); Rt{qbM|b&  
return l; yu~~"Rq)  
} W!g'*L/#L  
BgLK}p^  
} mT\!LpX  
V2kNJwwk  
改进后的快速排序: E<;C@B  
~JY<DW7  
package org.rut.util.algorithm.support; zm rQ7(y  
c#+JG  
import org.rut.util.algorithm.SortUtil; F,^Q'$ !  
HaI  
/** ou6|;*>d  
* @author treeroot IbAGnl{  
* @since 2006-2-2 ^+cf  
* @version 1.0 )`]w\s #  
*/ UPgjf  
public class ImprovedQuickSort implements SortUtil.Sort { X_XeI!,b  
IGs!SXclCs  
private static int MAX_STACK_SIZE=4096; UX=JWb_uGm  
private static int THRESHOLD=10; 'S<ebwRd=  
/* (non-Javadoc) TfK$tTkM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &G?b|Tb2  
*/ ?1 $.^  
public void sort(int[] data) { @qH{;  
int[] stack=new int[MAX_STACK_SIZE]; A<.`HCv2  
0hK)/!Y  
int top=-1; s<x2*yVUA  
int pivot; ?}y?e}y*xZ  
int pivotIndex,l,r; uNV (r"  
ipfiarT~)  
stack[++top]=0; \:C@L&3[  
stack[++top]=data.length-1; OpmI" 4{+  
j E_a ++  
while(top>0){ @%@uZqQ4  
int j=stack[top--]; ;cIs$  
int i=stack[top--]; ;Ad$Q9)EE  
hp6S *d  
pivotIndex=(i+j)/2; /m%Y.:g  
pivot=data[pivotIndex]; 1cWUPVQ  
D 4^2F(YRX  
SortUtil.swap(data,pivotIndex,j); hh`7b,+ 4  
?fcQd6-}  
file://partition zZDa7 1>  
l=i-1; <T JUKznO  
r=j; \M1-  
do{ 0}jB/Z_T  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;,n{6`  
SortUtil.swap(data,l,r); H `Fe |6I&  
} 9r% O  
while(l SortUtil.swap(data,l,r); <e|I?zI9-  
SortUtil.swap(data,l,j); {Cnz7TVB  
-sl] funRy  
if((l-i)>THRESHOLD){ I?@9;0R  
stack[++top]=i; SUxz &xH  
stack[++top]=l-1; n\&[^Q#b|  
} CGvU{n,"  
if((j-l)>THRESHOLD){ he;;p="!*  
stack[++top]=l+1; S !cc%  
stack[++top]=j; *?%DdVrO@  
} #WlIH7J8Tc  
k2muHKBlk  
} )xIk#>)  
file://new InsertSort().sort(data); jD9 ^DzFx  
insertSort(data); + |MHiC  
} ]cLO-A  
/** hrPm$`  
* @param data 0 3kzS ]g  
*/ r`}')2  
private void insertSort(int[] data) { p7}x gUxX  
int temp; 7HzO_u%H1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qp~O!9ph  
} 5Og.:4  
} Jj}+tQ f  
} w=I8f}(  
5O<7<O B  
} E\&~S+:Xp  
gq4le=,v  
归并排序: /<)A!Nn+F  
vL(7|K  
package org.rut.util.algorithm.support; Gb.r!W8  
Va>~7  
import org.rut.util.algorithm.SortUtil; _oxhS!.*  
}8Tr M0q8  
/** ]Ec\!,54u  
* @author treeroot Zoh[tO   
* @since 2006-2-2 k2o98bK&;  
* @version 1.0 Q.Tn"rE|  
*/ 8R}CvzI  
public class MergeSort implements SortUtil.Sort{ NL%5'8F>,  
&=y)C/u  
/* (non-Javadoc) {b~l [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4JSf t t  
*/ -bT1Qh X  
public void sort(int[] data) { 7<DlA>(oUX  
int[] temp=new int[data.length]; 7(AB5.O  
mergeSort(data,temp,0,data.length-1); >AI65g  
} 8?AFvua}r  
|u{NM1,  
private void mergeSort(int[] data,int[] temp,int l,int r){ :it52*3=  
int mid=(l+r)/2; ] P;Ng=a  
if(l==r) return ; 1*<m,.$  
mergeSort(data,temp,l,mid); jh \L)a*  
mergeSort(data,temp,mid+1,r); W3K?K-  
for(int i=l;i<=r;i++){ Q[J%  
temp=data; F[mL_JU  
} S,,,D+4  
int i1=l; uuW._$.A>  
int i2=mid+1; `+cc{k  
for(int cur=l;cur<=r;cur++){ 0w}OE8uq  
if(i1==mid+1) ]wCg'EUB  
data[cur]=temp[i2++]; f]N2(eM  
else if(i2>r) l1XA9>n  
data[cur]=temp[i1++]; zI77#AUM  
else if(temp[i1] data[cur]=temp[i1++]; uc4#giCD  
else (;-< @~2  
data[cur]=temp[i2++]; $ \0)~cy  
} qg6283'?  
} ousvsP%'  
n 5h4]u  
}  K9 h{sC  
IF-g %  
改进后的归并排序: *^+8_%;1  
qELy'\  
package org.rut.util.algorithm.support; k_$:?$  
}cuU5WQ?%  
import org.rut.util.algorithm.SortUtil; `) s]T.-  
fH[Yc>(oj  
/** LRl2@&z<  
* @author treeroot ikd~k>F  
* @since 2006-2-2 c+P.o.k;  
* @version 1.0 K1]m:Y<  
*/ Obwj=_+upd  
public class ImprovedMergeSort implements SortUtil.Sort { -)_"7}|u5  
_GSl}\  
private static final int THRESHOLD = 10; KLi&T mIB  
YJi C}.4Q  
/* ]/>(C76  
* (non-Javadoc) H0tj Bnu   
* ~kM# lh7At  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uh#"4-v  
*/ }: v&Nc  
public void sort(int[] data) { CYD&#+o  
int[] temp=new int[data.length]; 8wJfG Y  
mergeSort(data,temp,0,data.length-1); w+c%Y\:  
} ]Q-*xho  
'o41)p  
private void mergeSort(int[] data, int[] temp, int l, int r) { iOk^RDG+  
int i, j, k; ;#a^M*e  
int mid = (l + r) / 2; zyb>PEd.  
if (l == r) znm3b8ns  
return; v%8.o%G  
if ((mid - l) >= THRESHOLD) Bg.~#H  
mergeSort(data, temp, l, mid); &|cg`m  
else Hg<d%7.  
insertSort(data, l, mid - l + 1); VnqgN  
if ((r - mid) > THRESHOLD) _Ec9g^I10  
mergeSort(data, temp, mid + 1, r); 4 XSEN ]F  
else Y#[jDS(ip  
insertSort(data, mid + 1, r - mid); Qf0]7  
}',/~T6  
for (i = l; i <= mid; i++) { "`;$wA  
temp = data; ;VVKn=X=S=  
} :5`=9 _|  
for (j = 1; j <= r - mid; j++) { 3 sUTdCnNf  
temp[r - j + 1] = data[j + mid]; 7OSk0%Q,  
} -DWyKR= j"  
int a = temp[l]; oT9dMhx8  
int b = temp[r]; 90ZMO7_  
for (i = l, j = r, k = l; k <= r; k++) { w Q!C9Gp3e  
if (a < b) { 9p| ;Hh:  
data[k] = temp[i++]; Z{<&2*  
a = temp; IpX.ube  
} else { y>4r<Y ZQ  
data[k] = temp[j--]; 1?k{jt~  
b = temp[j]; AXbDCDA  
} AP1Eiv<Hub  
} "'Bx<FA  
} (t$jb |Oa  
3-^z<*  
/** xLID @9Hbu  
* @param data \v|nRn,`-  
* @param l |]s/NNU  
* @param i 9eG{"0)  
*/ s.VtmAH  
private void insertSort(int[] data, int start, int len) { l-?B1gd,l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); of?hP1kl[  
} K9\p=H^T7  
} }.+{M.[}  
} $Sz@u"ig%  
} -B+Pl*  
~cC =DeX  
堆排序: SxyXz8+e[  
T >BlnA  
package org.rut.util.algorithm.support; # !:u*1  
|a||oyrN  
import org.rut.util.algorithm.SortUtil; &~9'7 n!  
e+`LtEve0  
/** .x6c.Y.S  
* @author treeroot #J4{W84B  
* @since 2006-2-2 W|C>X=zTi  
* @version 1.0 ^r4@C2#vzJ  
*/ \PHbJN:BI  
public class HeapSort implements SortUtil.Sort{ SQ$|s%)oB  
c*fMWtPp  
/* (non-Javadoc) d2cslD d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kyn[4Bu!?  
*/ F@4TD]E0^  
public void sort(int[] data) { L$T23*9XY  
MaxHeap h=new MaxHeap(); Tf0"9  
h.init(data); H rMH  
for(int i=0;i h.remove(); ^?-SMcUHB  
System.arraycopy(h.queue,1,data,0,data.length); )1E[CIaXK  
} \W%Aeg*c  
cOhx  
private static class MaxHeap{ ,drbj.0-  
g4p-$WyT8>  
void init(int[] data){ }02#[vg  
this.queue=new int[data.length+1]; nw.,`M,N  
for(int i=0;i queue[++size]=data; I%4)%  
fixUp(size); nYA@t=t0  
} vIMLUL0  
} |->P|1 P  
`Mg&s*  
private int size=0; 3u&>r-V6Fn  
*?l-:bc]  
private int[] queue; $C&y-Hnar  
H]zi>;D  
public int get() { 6R`q{}.  
return queue[1]; DL*/hbG  
} S9cAw5E(yN  
)iKV"jsC  
public void remove() { -MA/:EB  
SortUtil.swap(queue,1,size--); )Id.yv}_  
fixDown(1); QYS 1.k  
} zc1y)s0G  
file://fixdown Y.7iKMp(  
private void fixDown(int k) { CO%o.j=1  
int j; utH/E7^8  
while ((j = k << 1) <= size) { F=T};b  
if (j < size %26amp;%26amp; queue[j] j++; seNJ6p=`  
if (queue[k]>queue[j]) file://不用交换 v|]1x2191  
break; 2cnyq$4k  
SortUtil.swap(queue,j,k); j'\!p):H  
k = j; f*(W%#*|  
} Q/u2Q;j>  
} 9Q*T'+V  
private void fixUp(int k) { DK6^\k][V  
while (k > 1) { xAZ-_}'tW  
int j = k >> 1; q3_ceXYU  
if (queue[j]>queue[k]) uT\|jv,  
break; w#-J ?/m  
SortUtil.swap(queue,j,k); @.D1_A  
k = j; @2X{e7+D  
} o+}>E31a  
} o.o$dg(r!  
w6Owfq'v  
} >14 x.c  
}{oZdO  
} xJNV^u  
@Yu=65h  
SortUtil: i(hL6DLD  
p-qt?A  
package org.rut.util.algorithm; mFGiysM  
DI>SW%)>  
import org.rut.util.algorithm.support.BubbleSort; z\kiYQ6kA  
import org.rut.util.algorithm.support.HeapSort; eH0^d5bH  
import org.rut.util.algorithm.support.ImprovedMergeSort; N(7UlS,u'  
import org.rut.util.algorithm.support.ImprovedQuickSort; BQOit.  
import org.rut.util.algorithm.support.InsertSort; ,NA _pvH)  
import org.rut.util.algorithm.support.MergeSort; Z)Zc9SVC  
import org.rut.util.algorithm.support.QuickSort;  K}OY!|  
import org.rut.util.algorithm.support.SelectionSort; j=],n8_i  
import org.rut.util.algorithm.support.ShellSort; Ra!Br6  
_ Vo35kA  
/** g)L?C'BG  
* @author treeroot ZcQ@%XY3~  
* @since 2006-2-2 *)8!~Hs   
* @version 1.0 L-,C5^  
*/ }Dc7'GZ  
public class SortUtil { w>TlM*3D/  
public final static int INSERT = 1; ]b+Nsr~  
public final static int BUBBLE = 2; 3$~oQC  
public final static int SELECTION = 3; 2jT2~D.U1  
public final static int SHELL = 4; ab!Cu8~v  
public final static int QUICK = 5; SQS PdR+  
public final static int IMPROVED_QUICK = 6; VfFXH,j  
public final static int MERGE = 7; flXDGoW  
public final static int IMPROVED_MERGE = 8; 8*7,qX  
public final static int HEAP = 9; l5/!0]/  
pWm==Ds|  
public static void sort(int[] data) { 141G~@-  
sort(data, IMPROVED_QUICK); 8TE2q Pm  
} 0Mo?9??  
private static String[] name={ }2!=1|}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JtbwY@R  
}; <rbzsn"a  
\'>ZU-V  
private static Sort[] impl=new Sort[]{ @5,Xr`]  
new InsertSort(), "NM SLqO  
new BubbleSort(), [" PRxl  
new SelectionSort(), YD@n8?~$$  
new ShellSort(), LJ{P93aq`^  
new QuickSort(), {;2Gl$\r  
new ImprovedQuickSort(), D=^|6}  
new MergeSort(), cvk$ I"q+  
new ImprovedMergeSort(), TGSkJ 1Lx  
new HeapSort() VJoobu1h  
}; p* Q *}V  
XD8Q2un  
public static String toString(int algorithm){ sWGc1jC?.F  
return name[algorithm-1]; >s;>"]  
} mE)I(< %  
/4 M~ 6LT`  
public static void sort(int[] data, int algorithm) { vxt<}h5J/!  
impl[algorithm-1].sort(data); +#LD@)G  
} Q|] 9  
mh :eUFe  
public static interface Sort { <?E~Qc t  
public void sort(int[] data); Oe_*(q&  
} R\MFh!6sn  
gc[BP>tl\  
public static void swap(int[] data, int i, int j) { =}xH6^It  
int temp = data; py':UQS*q  
data = data[j]; qHf8z;lc  
data[j] = temp; y7@q]~%  
} of<(4<T  
} lWRRB&8  
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