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 viV
Y
插入排序:
`WEZ"5n
=%)+%[wv
package org.rut.util.algorithm.support; AT
Zhr.
H
PrQ?PvA<L
import org.rut.util.algorithm.SortUtil; Y>."3*^
/** F7m?xy
* @author treeroot Myat{OF
* @since 2006-2-2 89}Y5#W
* @version 1.0 HY;o^drd
*/ VvbFp
public class InsertSort implements SortUtil.Sort{ 8$N8}q%
]Hj<IvG
/* (non-Javadoc) Z[!d*O%R_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T70QJ=,
*/ >Y 1{rSk
public void sort(int[] data) { }G46g#_6d>
int temp; rI$`9d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b<I9 MR
} +!-~yf#RE
} {MAQ/5
} u.pxz8
I7 QCYB|
} /NT[ETMk+
g3@Rl2yQJ
冒泡排序: m^%|ZTrwN7
I:(m aMc
package org.rut.util.algorithm.support; ^_I} x)i*@
R`Aj|C
z
import org.rut.util.algorithm.SortUtil; kpwt]]e*
\ A1uhHP!
/** >4m'tZ8
* @author treeroot qVjWV$j
* @since 2006-2-2 ;cQW sTfT
* @version 1.0 2s*#u<I
*/ >M%\T}5
public class BubbleSort implements SortUtil.Sort{ <HWS:'1
87!C@XlK_
/* (non-Javadoc) P47V:E%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (9\;A*CZ
*/ W^,S6!
public void sort(int[] data) { %1
KbS
[
int temp; 3:/'t{ ^B
for(int i=0;i for(int j=data.length-1;j>i;j--){ %\O#&=$E
if(data[j] SortUtil.swap(data,j,j-1); ~8 H_u
} M`,~ mU
} iq#b#PYA
} 2'jOP"G
} |LG4=j.l
Kr'f- {
}
xp'_%n~K@
zQ?!f#f
选择排序: +i ?S
<P ,~eX(r
package org.rut.util.algorithm.support; 5S
Xn?
bUV >^d
import org.rut.util.algorithm.SortUtil; 4EI7W,y
[%~
:@m
/** {_N,=DQ!
* @author treeroot |@?%Ct
* @since 2006-2-2 mOpTzg@
* @version 1.0 L$'[5"ma
;
*/ (2ur5uk+
public class SelectionSort implements SortUtil.Sort { mE O\r|A
e+v({^k
/* dF0,Y?
* (non-Javadoc) H>Q%"|
* c0c|z
Ym
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6K
cD&S/
*/ \y6OUM2y
public void sort(int[] data) { lN,/3\B
int temp; hc
(e$##
for (int i = 0; i < data.length; i++) { U<"WK"SM
int lowIndex = i; ^
PI 5L
for (int j = data.length - 1; j > i; j--) { U~{du;\
if (data[j] < data[lowIndex]) { Gir#"5F
lowIndex = j; QY/hI`
} -yxOBq
} j.a`N2]WE
SortUtil.swap(data,i,lowIndex); A,su;Qh
} A[G0 .>Wk
} &1%q"\VI
_0+0#! J!
} 3X9b2RY*L/
Nu8Sr]p
Shell排序: bNT9 H`P
_'4A|-9
package org.rut.util.algorithm.support; %0#1t 5g
F4=}}kU
import org.rut.util.algorithm.SortUtil; U$oduY#
jq'!UN{
/** l4T7'U>`
* @author treeroot 80A.<=(=.
* @since 2006-2-2 &`b
"a!
* @version 1.0 gTRF^knrY
*/ 5J8r8` t
public class ShellSort implements SortUtil.Sort{ TJE\A)|>g
Cg*H.f%Mr
/* (non-Javadoc) .4.b*5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MO;X>D =
*/ Qf@I)4'
public void sort(int[] data) { rt
JtK6t
for(int i=data.length/2;i>2;i/=2){ +cb6??H
for(int j=0;j insertSort(data,j,i); l
& Dxg
} B|o2K}%f
} /0\
mx4u
insertSort(data,0,1); F~ Lx|)0M
} 0"~i^
VDTcR
/** XMG]Wf^%\<
* @param data d1[ZHio2c?
* @param j vn/.}GkpU
* @param i x@8a''
*/ F R|&^j6
private void insertSort(int[] data, int start, int inc) { 6q
2_WX
int temp; $XoQ]}"O
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k4 F"'N
} j65<8svl
} vv26I
}
}-~l!
86nN"!{l:
} ;;&}5jcV
&r:7g%{n
快速排序: CirZ+o
5atYOep
package org.rut.util.algorithm.support; 23gPbtq/
$8BPlqBIZ
import org.rut.util.algorithm.SortUtil; Kv~U6_=1O
7%sdtunf`
/** tsk)zP,<
* @author treeroot ={u0_j
W
* @since 2006-2-2 8g7<KKw
* @version 1.0 {AQ=<RDRF
*/ tor!Dl@Mo
public class QuickSort implements SortUtil.Sort{ ,cqF3
`jOX6_z?I
/* (non-Javadoc) HJY2#lSha6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3)RsLI9
*/ Qa.uMq
public void sort(int[] data) { W|o'&
quickSort(data,0,data.length-1); YX#-nyK
} L31|\x]
private void quickSort(int[] data,int i,int j){ Sfr&p>{,
int pivotIndex=(i+j)/2; *2GEnAZb7n
file://swap 1</kTm/Qa
SortUtil.swap(data,pivotIndex,j); `[n("7,
I&YSQK:b
int k=partition(data,i-1,j,data[j]); =xS+5(
SortUtil.swap(data,k,j); nak Yn
if((k-i)>1) quickSort(data,i,k-1); 3@]SKfoo1
if((j-k)>1) quickSort(data,k+1,j); b4pm_Um
{ .?/)
} pn^ d]rou?
/** cSm%s
* @param data 9cj9SB4
* @param i Xp}Yw"7
* @param j ~T89_L
* @return Y(d$
*/ -bU oCF0
private int partition(int[] data, int l, int r,int pivot) { @W9x$
do{ GbaEgA'fa
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y?q*WUh
SortUtil.swap(data,l,r); )d>!"JB-
} yiA<,!;4P
while(l SortUtil.swap(data,l,r); ziCHjqT
return l; :EA\)@^$R
} 0p\@!Z H
q*7VqB
} x"
L20}
u!W0P6
改进后的快速排序: -u8NF_{c
aiu5}%U
package org.rut.util.algorithm.support; w_{wBL[3e
uvG]1m#
import org.rut.util.algorithm.SortUtil; 7w6cwHrL@
csW43&
/** 20nP/e
* @author treeroot MfWyc_
* @since 2006-2-2 DRi<6Ob
* @version 1.0 vz7J-CH
*/ ry` z(f
public class ImprovedQuickSort implements SortUtil.Sort { -K3^BZHI
zp%Cr.)$
private static int MAX_STACK_SIZE=4096; 6U R2IxbE
private static int THRESHOLD=10; `6]%P(#a
/* (non-Javadoc) \S!e![L/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #nPQ!NB/
*/ ap+JQ@b
public void sort(int[] data) { 9#MBaO8_"
int[] stack=new int[MAX_STACK_SIZE]; tAv@R&W,
2h1vVF3
int top=-1; ^Uf]Q$uCjE
int pivot; E4~<V=2l
int pivotIndex,l,r; HV{wI1
)E-inHD /
stack[++top]=0; <#u=[_H
stack[++top]=data.length-1; w.YiO5|y
K|hjEQRv
while(top>0){ UVd 7 JGR
int j=stack[top--]; rp!oO>F
int i=stack[top--]; 4O )1uF;
V`XNDNJ:
pivotIndex=(i+j)/2; lrIS{MJ+-
pivot=data[pivotIndex]; uP~@U" !
lE&&_INHQ
SortUtil.swap(data,pivotIndex,j); "2)H'<
$JMXV
file://partition Pa
V@aM~3
l=i-1; "J[K 3
r=j; 10q'Z}34
do{ VFURAYS
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I+[>I=ewa
SortUtil.swap(data,l,r); ebUBrxZX
} _/6!yyl
while(l SortUtil.swap(data,l,r); C9n?@D;S
SortUtil.swap(data,l,j); {MCi<7j<?
X.f>'0i
if((l-i)>THRESHOLD){ ][9%Kl*%@p
stack[++top]=i; {f2S/$q
stack[++top]=l-1; T"E6y"D
} {B?Wu3-
if((j-l)>THRESHOLD){ 'rO!AcdLU
stack[++top]=l+1; :y%/u%L
stack[++top]=j; t\{'F7
} \]2]/=2tLd
]
2eK
} [z`31F
file://new InsertSort().sort(data); r&R B9S@*h
insertSort(data); )FF>IFHG
} VEqS;~[
/** ?'@8kpb
* @param data 3=FZ9>by
*/ GqaDL3Niqs
private void insertSort(int[] data) { Mc09ES
int temp; j53*E
)d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C":32_q
} +e yc`J
} *W0y: 3dB3
} Ma.`A
<acUKfpY
} 8S mCpg
%C~1^9uq
归并排序: b\vKJ2
"a
ueL/dgN
package org.rut.util.algorithm.support; Pe3@d|-,MU
]iN'x?Fo
import org.rut.util.algorithm.SortUtil; B$ajK`x&I
DcoX+8 7
/** i'H/ZwU
* @author treeroot B_nVP
* @since 2006-2-2 OGde00
* @version 1.0 kP#B5K_U|
*/ TUV&vz{
public class MergeSort implements SortUtil.Sort{ h{HF8>u[
Tl$[4heE
/* (non-Javadoc) - }7e:!.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y .#")IAF
*/ 01r 8$+
public void sort(int[] data) { *.sVr7=j
int[] temp=new int[data.length]; Ir`eL
mergeSort(data,temp,0,data.length-1); 10<x.8fSP
} lE;Ewg
1crnmJ!C
private void mergeSort(int[] data,int[] temp,int l,int r){ -8eoNzut
int mid=(l+r)/2; +Z7th7W/,
if(l==r) return ; 2z6yn?'&L
mergeSort(data,temp,l,mid); PD&\LbuG
mergeSort(data,temp,mid+1,r); o<<xY<
for(int i=l;i<=r;i++){ WG N=Y~E
temp=data; [Sr,h0h6
} P<l&0dPO8
int i1=l; A<5ZF27
int i2=mid+1; %\D)u8}
for(int cur=l;cur<=r;cur++){ 9xO#tu]
if(i1==mid+1) ?WF/|/
data[cur]=temp[i2++]; [`{Z}q&
else if(i2>r) mL{B!Q
data[cur]=temp[i1++]; tZ}
v%3
else if(temp[i1] data[cur]=temp[i1++]; 6l5:1|8b,!
else ^T ?RK"p
data[cur]=temp[i2++]; ?]Pmxp
H}
} }4Tc
} {;N,t]>8M
}Mf!-g
} ^* J2'X38I
:"=ez<t
改进后的归并排序: m@"QDMHk.
RIb4!!',c
package org.rut.util.algorithm.support; B:gjAb}9T
@6{~05.p
import org.rut.util.algorithm.SortUtil; &