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。 I~p8#<4#b
插入排序: r/CEYEJ&X
C.yY8?|
package org.rut.util.algorithm.support; L.09\1?.n
f?=r3/AO
import org.rut.util.algorithm.SortUtil; ^8?j~&u$F
/** a%7"_{s1
* @author treeroot )(h&Q?
Ar
* @since 2006-2-2 ' "ZRD_"
* @version 1.0 {B FT
*/ My]+?.Ru
public class InsertSort implements SortUtil.Sort{ .k# N7[q=
qDby!^ryc
/* (non-Javadoc) oupJJDpP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o &BPG@n
*/ GB&Nt{
public void sort(int[] data) { >DDQ'W !
int temp; sg3h i"Im
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `pP9z;/Xq
} \We"?1^
} 5Y(r\Dd
} )^t!|*1LA
^G}# jg.
} O24Jj\"
uz*d^gr}
冒泡排序: a`7%A H)
7<h.KZPc
package org.rut.util.algorithm.support; Q,zC_
+VSZhg,Np8
import org.rut.util.algorithm.SortUtil; sW;7m[o
%z(9lAe
/** R<Z^L~)
* @author treeroot |.1qy,|!X
* @since 2006-2-2 7<^'DOs
* @version 1.0 q&u$0XmV
*/ W;^N8ap%
public class BubbleSort implements SortUtil.Sort{ `Jn,IDq
Q2*/`L}m\
/* (non-Javadoc) j._G7z/LJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .j:i&j(
*/ -Bj.hx*
public void sort(int[] data) { JYPxd~T/-
int temp; {5SfE$r
for(int i=0;i for(int j=data.length-1;j>i;j--){ T'hml
if(data[j] SortUtil.swap(data,j,j-1); /Z:N8e
} Was'A+GZ
} /^J2B8y
} (G#}*
} i#k-)N _$
8fnR1mWG
} ]22C)<
3a'q`.L
选择排序: .%_)*NUZ
j5zFDh1(
package org.rut.util.algorithm.support; 5)mVy?Z
P2Onkl
import org.rut.util.algorithm.SortUtil; q&Q/?g>f
[KMS<4t'
/** %8
qSv%_
* @author treeroot G[#.mD{k
* @since 2006-2-2 qh$X^%g
* @version 1.0 i!L;? `F{
*/ Fqo&3+J4
public class SelectionSort implements SortUtil.Sort { JPLI
@zX^
NS Np
/* )U'yUUi
* (non-Javadoc) i-,'.w
* [g +y_@9s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7gm:ZS
*/ $Buf#8)F*
public void sort(int[] data) { *E}Oh
int temp; ?NlSeh
for (int i = 0; i < data.length; i++) { u%xDsTDP
int lowIndex = i; ;,dkJ7M
for (int j = data.length - 1; j > i; j--) { bK<}0Ja[
if (data[j] < data[lowIndex]) { Q&gPa]z]}
lowIndex = j; '6X%=f'^b
} K@6`-|I
} "c,!vc4
SortUtil.swap(data,i,lowIndex); WO@H*
} ywEDy|Wn$~
} l
DnMjK\M
7 W{~f?Sh
} 7G"7wYc>R
Y9tV%
Shell排序: |Ytg
<raG07{!*
package org.rut.util.algorithm.support; ~0ooRUWU7
U{}!y3[wK
import org.rut.util.algorithm.SortUtil; ]26mB
{`F1u?l
/** &n|*uLn
* @author treeroot E=kw)<X2
* @since 2006-2-2 /l6\^Xf{
* @version 1.0 .H2qs{N!
*/ 74_xR
public class ShellSort implements SortUtil.Sort{ Gqt-_gga
\?&Au
/* (non-Javadoc) bDWeU}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qm'b'!gq~
*/ -`Q}tg>cT
public void sort(int[] data) { hiwIWd:H
for(int i=data.length/2;i>2;i/=2){ |1l&@#j!2
for(int j=0;j insertSort(data,j,i); PrSkHxm
} 2tf6GX:
} U^rm:*f
insertSort(data,0,1); QrC/ssf}
} ^=0$
FJT1i@N
/** "OL~ul5
* @param data 9!}q{2j
* @param j `?9T~,
* @param i d0
-~|`5
*/ O R
#7"
private void insertSort(int[] data, int start, int inc) { c@(1:,R
int temp; s<&[\U
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %!y89x=E
} q (>c`5
} 2+'|kt2
} \zu}\{
RtC'v";6
} +O+<Go@a
ia4k :\
快速排序: U=cWmH
K\&o2lo]
package org.rut.util.algorithm.support; p<5!02yQ\
%{C)1*M7
import org.rut.util.algorithm.SortUtil; T'1gy}
XoItV
/** vZkXt!%)
* @author treeroot MEq"}zrh
* @since 2006-2-2 -(IC~
* @version 1.0 T2weAk#J
*/ hz\WZ^
public class QuickSort implements SortUtil.Sort{ maC>LBa2/
S LGW:
/* (non-Javadoc) {QQl$ys/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ai;\@$ cq
*/ |!LnAh
public void sort(int[] data) { >85zQ
1aL
quickSort(data,0,data.length-1); B~TN/sd
} oT&m4I
private void quickSort(int[] data,int i,int j){ |J3NR`-R
int pivotIndex=(i+j)/2; 'jvpNn
file://swap q`Q}yE>9
SortUtil.swap(data,pivotIndex,j); "&QH6B1U6H
"!Lkp2\
int k=partition(data,i-1,j,data[j]); KAc >-c<
SortUtil.swap(data,k,j); B?6QMC;
if((k-i)>1) quickSort(data,i,k-1); G!Zyl^
if((j-k)>1) quickSort(data,k+1,j); <KQ(c`KW7
&[j]Bp?
} !wh&>3~
/** 1`-r#-MGG
* @param data OW`STp!
* @param i 'M/([|@
* @param j *Km7U-BG
* @return 4|Ui?.4=
*/ T20VX 8gX
private int partition(int[] data, int l, int r,int pivot) { Tbf:eVIG
do{ Rs7|}Dl}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Gi7RMql6Q
SortUtil.swap(data,l,r); `fS^
j-_M
} dGkgaC+
while(l SortUtil.swap(data,l,r); ~<ri97)
return l; ]J@/p:S>
} x-_vl
9P)
Z[ZDQ o1
} u\g,.C0
;n*J$B
改进后的快速排序: 9UD
@MA
|_zO_F rtp
package org.rut.util.algorithm.support; v?j!&d>
VKrShI
import org.rut.util.algorithm.SortUtil; {9'M0=
<Ar$v'W=F{
/** pFO^/P'
* @author treeroot h?j_Ry
* @since 2006-2-2 8MF2K6
* @version 1.0 C}"@RHEu
*/ 8^ #mvHah
public class ImprovedQuickSort implements SortUtil.Sort { QK <\kVZ8
AH d-
private static int MAX_STACK_SIZE=4096; Tr .hmG U
private static int THRESHOLD=10; rt!r2dq"
/* (non-Javadoc) l(:kfR~AC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )[&zCqDc
*/ $p$dKH
public void sort(int[] data) { f/ahwz
int[] stack=new int[MAX_STACK_SIZE]; e7k%6'@
{fz$Z!8-
int top=-1; ^v:Z o
int pivot; Y(VO.fVJK
int pivotIndex,l,r; C`K^L=8`{
"wM1 qX
stack[++top]=0; # cFr
stack[++top]=data.length-1; #oV+@D`
ZYMw}]#((E
while(top>0){ VmvQvQ/9R
int j=stack[top--]; `;%Z N
int i=stack[top--]; =G${[V\
GP,<`l&
pivotIndex=(i+j)/2; @;)PSp*j
pivot=data[pivotIndex]; 1}g:|Q
~5OL6Bi-q
SortUtil.swap(data,pivotIndex,j); jRQ+2@n{E
0Y?H0
file://partition *e{PxaF!C
l=i-1; 5Ec/(-F
r=j; ]<trA$ 0
do{ !G?gsW0\h
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?<%=:
Yh
SortUtil.swap(data,l,r); C/tr$.2H=
} EX
"|H.(
while(l SortUtil.swap(data,l,r); Qc"'8kt
SortUtil.swap(data,l,j); uA~slS
Z
X.#oEmA,P
if((l-i)>THRESHOLD){ Poy^RpnX
stack[++top]=i; ^&