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。 @|t]9
插入排序: L"dN
$ A
EZ"i0u
package org.rut.util.algorithm.support; yF6AI@y
xYv;l\20.
import org.rut.util.algorithm.SortUtil; Da8gOZ
/** 3 V ^5 4_
* @author treeroot `@1e{?$
* @since 2006-2-2 o^(I+ <el
* @version 1.0 6QT&{|q=
*/ `p* 43nV
public class InsertSort implements SortUtil.Sort{ XY? Cl
~4Fz A,,
/* (non-Javadoc) u tkdL4G}'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z^tzP~nI
*/ 2!W[ff@~7
public void sort(int[] data) { \*{Mg wF
int temp; QP50.P5g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V0
Z8VqV
} _U4@W+lhX_
} "HqmS
} #*y.C[^5{
-u"|{5? '
} Pn9;&`t
m6K7D([f
冒泡排序: pRE^;
4}z
U" 3L
package org.rut.util.algorithm.support; .IY@Q
DOFW"Sp E
import org.rut.util.algorithm.SortUtil; C_q2bI
NV(jp'i~
/** lo6upirZX
* @author treeroot ( Ly^+Hjg
* @since 2006-2-2 <{;'0> ToM
* @version 1.0 )jUPMIo
*/ cc`u{F9
public class BubbleSort implements SortUtil.Sort{ -
uO(qUa#
b5]<!~Fv:`
/* (non-Javadoc) UeZ(@6_:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T@P~A)>yo
*/ ^["D>@yIR
public void sort(int[] data) { (7!pc
int temp; [hot,\+f
for(int i=0;i for(int j=data.length-1;j>i;j--){ PcZ<JJ16F$
if(data[j] SortUtil.swap(data,j,j-1); rB]2qk`/'
} ]:2Ro:4Yv
} 4:O.x#p
} WEG!;XZ
} dZ*&3.#D5
1uKIO{d@
} NPO!J^^
*w^!\
选择排序: 0(u}z
o2$A2L9P
package org.rut.util.algorithm.support; wi.E$RckD
W]bytsl
import org.rut.util.algorithm.SortUtil; r7}KV| M
|=VWE>g
/** `S?_=JIX
* @author treeroot P<[)
qq@;
* @since 2006-2-2 wK fq'W{
* @version 1.0 I(&N2L$-
*/ $Fc}K+
public class SelectionSort implements SortUtil.Sort { .)%,R
C-,#t5eir
/* KkzG#'I1
* (non-Javadoc) [z7]@v6b
* w&es N$2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E;4d lL`*
*/ 4/3w
*
public void sort(int[] data) { V^n=@CZT9C
int temp; 4~oRcO8!Y
for (int i = 0; i < data.length; i++) { 4XiQ8"C
int lowIndex = i; {A
,w%
for (int j = data.length - 1; j > i; j--) { y9@j-m&
if (data[j] < data[lowIndex]) { &io+*
lowIndex = j; ?/@XJcm+
} t(.vX
} \oGU6h<
SortUtil.swap(data,i,lowIndex); apM)$
} vt(}8C+
} e_rEu'[av
Dcs O~mg
} Ho&f[T(
7NvRZ!
Shell排序: B'vIL '
td$RDtW[3
package org.rut.util.algorithm.support; C\{hN
^
rO}'~(
import org.rut.util.algorithm.SortUtil; pD~."fb
M[iWWCX
/** 0R]'HA>
* @author treeroot [{`&a#Q
* @since 2006-2-2 ?f:0GE7
* @version 1.0 ?e+y7K}"]
*/ [V;u7Z\r-
public class ShellSort implements SortUtil.Sort{ W5Jb5
$Grk{]nT
/* (non-Javadoc) I>-1kFma;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .ubZ
*/ pf yJL?_%
public void sort(int[] data) { 81I9xqvSd~
for(int i=data.length/2;i>2;i/=2){ Ib/e\+H\
for(int j=0;j insertSort(data,j,i); z<yqQ[
} 7o*~zDh@fH
} /6 x[C
insertSort(data,0,1); PCc{0Rp\vk
} D7B g!*
iM8l,Os]<f
/** Wn2J]BH
* @param data =6fJUy^M\
* @param j }C=+Tn
* @param i ~Hx>yn94e
*/ 0NvicZ7VR
private void insertSort(int[] data, int start, int inc) { oHV!>K_D
int temp; (ze9-!%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =C)2DW J1
} 1dy"
} z<.6jx@
} THCvcU?X
|F~U
} S[&yO-=p6
9!Fg1h=
快速排序: fLkC|
`w"ooK
package org.rut.util.algorithm.support; ZNDjk
NZXCaciG
import org.rut.util.algorithm.SortUtil; 7Mh!@Rd_V
vsB3n$2@u
/**
SmAF+d
* @author treeroot m='_O+ $
* @since 2006-2-2 0o
8V8 :
* @version 1.0 )Tn(!.
*/ h{ EnS5~
public class QuickSort implements SortUtil.Sort{ [F,s=,S'M
t6%zfm
/* (non-Javadoc) 3#`Sk`z<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5^2P\y(?
*/ \LM{.gzT
public void sort(int[] data) { _G^ 4KwYp
quickSort(data,0,data.length-1); u6*0%
Km
} U\"FYTC
private void quickSort(int[] data,int i,int j){ AASS'H@
int pivotIndex=(i+j)/2; qcBamf
file://swap ,@8*c0Y~<!
SortUtil.swap(data,pivotIndex,j); gI+dyoh
;![rwra
int k=partition(data,i-1,j,data[j]); [XNDYaF8
SortUtil.swap(data,k,j); msZ3%L
if((k-i)>1) quickSort(data,i,k-1); 8;(3fSNC
if((j-k)>1) quickSort(data,k+1,j); H+N6VVnO
.DhB4v&
} )gxZ &n6
/** |Tk'H&
* @param data ZBc8^QZ
* @param i f(c#1AJE53
* @param j x0dBg~I
* @return Cuom_+wV&
*/ 8+&Da
private int partition(int[] data, int l, int r,int pivot) { iz6+jHu'l
do{ /+?eSgM/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SJ&+"S&
SortUtil.swap(data,l,r); )!=X?fz,O
} %/%TR@/
while(l SortUtil.swap(data,l,r); *V@t]d$=#
return l; ;fm>
\f
} VVi3g
])Z p|?Y
} %VO>6iVn
/}3I:aJwb
改进后的快速排序: +)*oPSQ5
)JA^FQ5N
package org.rut.util.algorithm.support; qfgw^2aUa
s[u*~A
import org.rut.util.algorithm.SortUtil; L&Pj0K-HT3
)bB
Va^
/** ?s9f}>
* @author treeroot n wO5<b;
* @since 2006-2-2 TA!6|)BUW
* @version 1.0 e3%dNa
*/ /wJocx]vQ
public class ImprovedQuickSort implements SortUtil.Sort { c/-PEsk_TP
l\{r-F
N
private static int MAX_STACK_SIZE=4096; q.d
qr<
private static int THRESHOLD=10; )C0 y<:</
/* (non-Javadoc) M HKnHPv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f(*iagEy
*/ <-=g)3_
public void sort(int[] data) { tjcG^m} _
int[] stack=new int[MAX_STACK_SIZE]; {[r}gS%
ZE6W"pbjU
int top=-1; %ERR^
int pivot; V6r*fEhrT_
int pivotIndex,l,r; )$QZ",&5
NxN~"bfh
stack[++top]=0; x UTlM
stack[++top]=data.length-1; p 8lm1;
\S)cVp)h
while(top>0){ W-4R;!42
int j=stack[top--]; H:,Hr_;nC
int i=stack[top--]; pw=o}-P{
G,,f' >
pivotIndex=(i+j)/2; XOPiwrg%p
pivot=data[pivotIndex]; )W!\D/C+
cf*SWKs
SortUtil.swap(data,pivotIndex,j); *\$ko)x?c
T)Pr%kF
file://partition opon"{
l=i-1; F)=*Ga
r=j; c=4z+_ K
do{ C$`^(?iO/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SBamgc
SortUtil.swap(data,l,r); *:Y9&s^6j
} Twpk@2=l
while(l SortUtil.swap(data,l,r); 9K=K,6
b
SortUtil.swap(data,l,j); Ft?Yc 5
TZa LB}4
if((l-i)>THRESHOLD){ \r-v]]_<d
stack[++top]=i; >,c'Z<TM
stack[++top]=l-1; {R7m qzt
} sxPvi0>
if((j-l)>THRESHOLD){ FQ]5W |e
stack[++top]=l+1; 5YQJNP
stack[++top]=j; ez[$;>
} Dx.hM[
~!'T!g%C
} ``Rg0o
file://new InsertSort().sort(data); \1#~]1~
s
insertSort(data); DU:+D}vl
} j.KV:zJU
/** .Iv`B:4
* @param data -
*xn`DH
*/ PH=O>a`a_O
private void insertSort(int[] data) { .zvvk
int temp; {1'M76T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K9S(Xip
} uo7[T*<Q
} K#dG'/M|Pb
} ?7w7Y;FuR
g7Z3GUCGL
} ^-s`$lTp
! Y'~?BI
归并排序: sUpSXG-W/@
l/56;f\IA
package org.rut.util.algorithm.support; - 4B&