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。 O%r<I*T^r
插入排序: ' vwBG=9C
6{M.S}.^
package org.rut.util.algorithm.support; >L%%B-
{)mlXo(On
import org.rut.util.algorithm.SortUtil; rhrlEf@
/** +~-|(
y
* @author treeroot zy|hf<V
* @since 2006-2-2 P1t5-q
* @version 1.0 '&9b*u";x(
*/ ;>~iCFk]?
public class InsertSort implements SortUtil.Sort{ { T.VB~C
?CIa)dhu
/* (non-Javadoc) @9-qqU@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4t":WutC
*/ 1 !sYd@iD@
public void sort(int[] data) { Yr+&|;DB
int temp; <XNLeJdY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y.zW>Mfl
} p s2C8;zT
} @bZb#,n]
} PJ'l:IU
rZLMYM
} +mJAIjH
>_@J&vC
冒泡排序: IoC,\$s,
[K5afnq`
package org.rut.util.algorithm.support; vQ;Z 0_
4
QWHGh"
import org.rut.util.algorithm.SortUtil; t?\osPL
{S?.bT%&
/** W+QI
D/
* @author treeroot R&?p^!`%
* @since 2006-2-2 i[B%:q:&
* @version 1.0 9I,Trk@&
*/ ^#nAS2w7U
public class BubbleSort implements SortUtil.Sort{ j'Fni4;
^dro*a,
/* (non-Javadoc) K&/W cuP&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b{A#P?
*/ t4h* re+
public void sort(int[] data) { v"j7},P@
int temp; L(.5:&Y=`
for(int i=0;i for(int j=data.length-1;j>i;j--){ k20tn
ew
if(data[j] SortUtil.swap(data,j,j-1); G]{)yZ'}
} y0xte&
} .m
.v$(
} '`S,d[~
} zR%#Q_
, vWcWT
} r;-\z(h
@ Fu|et
选择排序: #(%6urd
jN'zNOV~
package org.rut.util.algorithm.support; ~!I
\{(
j*GYYEY
import org.rut.util.algorithm.SortUtil; y&UsSS
7XaRi@uG
/** &a V`u?'e
* @author treeroot TV} H
* @since 2006-2-2 WkT4&|POJ
* @version 1.0 ;e+ErN`a.~
*/ 4XRVluD%W.
public class SelectionSort implements SortUtil.Sort { $(BW |Pc
p &A3l
/* [L:,A{rve
* (non-Javadoc) 0ZO!_3m$r
* /0A}N$?>:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T5ol2
*/ :p89J\
public void sort(int[] data) { 7v{Dwg
int temp; >y5~:L
for (int i = 0; i < data.length; i++) { env]*gx+=
int lowIndex = i; jVr:O`
for (int j = data.length - 1; j > i; j--) { -LUKYGBK
if (data[j] < data[lowIndex]) { /)j:Y:5
lowIndex = j; {a(TT)d
} 2QdqVwm
} {<V{0
s%
SortUtil.swap(data,i,lowIndex); U<zOR=_
} 6:H@=fEv
} %5'6^bT
tks1*I$S<
} 0y*8;7-|r)
Uo# Pe@ieQ
Shell排序: @,$>H7o
EsdA%`
package org.rut.util.algorithm.support; d4~!d>{n|c
yN9/'c~
import org.rut.util.algorithm.SortUtil; Mp}U>+8
+d<o2n4!
/** eGjEO&$
* @author treeroot s_/CJ6s
* @since 2006-2-2 r+>gIX+Fl
* @version 1.0 T)MKhK9\Ab
*/ nPE{Gp) }
public class ShellSort implements SortUtil.Sort{ {;q
zz9 |
12.|E d*72
/* (non-Javadoc) "_W[X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /;
w(1)B
*/ J.$N<.
public void sort(int[] data) { ,XU<2jv]
for(int i=data.length/2;i>2;i/=2){ a0~LZQ?
for(int j=0;j insertSort(data,j,i); -a !?%
} =A{F&:+a]
} 4S5U|n
insertSort(data,0,1); 0.+MlyA
} /V0[Urc@
pC^d-Ii
/** 1aDx 6Mq
* @param data .k cyw>T`I
* @param j u^, eHO
* @param i DZ"'GQSg
*/ 7v't# =
private void insertSort(int[] data, int start, int inc) { Q\rf J||
int temp; _\;0E!=p
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E%LUJx}
} .~u[rc|<
} DHQS7%)f`
} xa8;"Y~"bg
VYbH:4K@%
} ^,}1^?*
zcGmru|k
快速排序: TophV}@B`
zncKd{Q\tP
package org.rut.util.algorithm.support; u.;l=tzz
VkFMr8@|
import org.rut.util.algorithm.SortUtil; cDS\=Bf
52ExRG S
/** 0Xb,ne
7
* @author treeroot 2ci[L:U
* @since 2006-2-2 z.lIlp2:
* @version 1.0 =U'!<w<-
*/ 9k/L m
public class QuickSort implements SortUtil.Sort{ AO,
o|,#4F
5\V""fH
/* (non-Javadoc) KT[ZOtu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K
@RGvP
*/ DQ<4`wE M
public void sort(int[] data) { nr&bpA/
quickSort(data,0,data.length-1); ijP`fM8
} .exBU1Yk@
private void quickSort(int[] data,int i,int j){ uP G\1
int pivotIndex=(i+j)/2; ml@;ngmp.
file://swap D%L^[|)c\s
SortUtil.swap(data,pivotIndex,j); oz:"w
nX
#/_{(P
int k=partition(data,i-1,j,data[j]); P?p]sLrP
SortUtil.swap(data,k,j); |M`'
if((k-i)>1) quickSort(data,i,k-1); I3HO><of
if((j-k)>1) quickSort(data,k+1,j); )pSA|Qt N
t W+"/<U
} $GP66Ev
/** 60;_^v
* @param data eSQkW
* @param i d~ +(g!
* @param j EHN(K-
* @return eR%\_;}7;
*/ Qk? WX
(`B
private int partition(int[] data, int l, int r,int pivot) { 4C/G &w&
do{ {0~\ T[qm
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4sRM"w;
SortUtil.swap(data,l,r); ;4l8Qg
7
} ?VlGTMaS+
while(l SortUtil.swap(data,l,r); k@
<dru
return l; P -NR]f
} VCfHm"'E8
-0UR%R7q
} .fbY2b([
?5FlbiT
改进后的快速排序: A
0v=7
]
9u^M{6
package org.rut.util.algorithm.support; )X?oBNsj
FRuPv6
import org.rut.util.algorithm.SortUtil; {CV+1kz
/{f"0]-RA
/** Qo)Da}uo20
* @author treeroot &Ts!#OcB,
* @since 2006-2-2 !m^;wkrY
* @version 1.0 GF6 o
*/ ,A'| Z
public class ImprovedQuickSort implements SortUtil.Sort { "I66@d?
~P#mvQE)
private static int MAX_STACK_SIZE=4096; 0N^+d,Xt.
private static int THRESHOLD=10; ltfKqY-
/* (non-Javadoc) <3!Al,!ej@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )by7[I0v
*/ Tf~eH!~0
public void sort(int[] data) { iLch3[p%
int[] stack=new int[MAX_STACK_SIZE]; .<zKBv
d\uN
int top=-1; =WjHf8v;
int pivot; LD ]-IX&L
int pivotIndex,l,r; N"}>);r
5mQ@&E~#W
stack[++top]=0; mFg$;F
stack[++top]=data.length-1; U|]cB
S=ZZ[E_~S
while(top>0){ 9v_s_QkL2
int j=stack[top--]; ||JUP}eP
int i=stack[top--]; E/g"}yR
s>m2qSu
pivotIndex=(i+j)/2; `Jk0jj6Z
pivot=data[pivotIndex]; 0u1ZU4+EC
QuqznYSY{
SortUtil.swap(data,pivotIndex,j); dpTsTU!\
arDl2T,igF
file://partition g!R7CRt%
l=i-1; Rjq Xz6
r=j; ss[`*89
do{ wn.~Dx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n74\{`8]o
SortUtil.swap(data,l,r); y92R}e\M
} +9w[/n ^,G
while(l SortUtil.swap(data,l,r); .ojEKu+EJ'
SortUtil.swap(data,l,j); [EDX@Kdq)
BbI%tmA7
if((l-i)>THRESHOLD){ b%0p<*:a/
stack[++top]=i; 2uOYuM[7gH
stack[++top]=l-1; sSZ)C|Q
} gYD1A\
if((j-l)>THRESHOLD){ `wXK&R<`
stack[++top]=l+1; ]:OrGD"
stack[++top]=j; B~w$j/sWU
} ,U3
N$6e KJ]
} Yy88 5
file://new InsertSort().sort(data); Q]YB.n3
insertSort(data); }:m/@LKB
} ux<|8S
/** o5bp~.m<
* @param data 1ZI1+TDH
*/ 0n{.96r0R
private void insertSort(int[] data) { RNi%6A1
int temp; \IE![=p\w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HohCb4do
} rS{}[$Zpl
} iX$G($[l(
} G
IN|cv=
#B;P4n3
} c,4~zN8Ou
,B[j{sE
归并排序: tw_o?9
moM?aYm
package org.rut.util.algorithm.support; g}s$s}
Y~AjcqS
import org.rut.util.algorithm.SortUtil; )O]6dd
'{"Rjv7
/** C`hdj/!A
* @author treeroot eR$@Q
* @since 2006-2-2 LH5Z@*0#
* @version 1.0 }T@=I&g;
*/ &eHRn_st5b
public class MergeSort implements SortUtil.Sort{
H)Btm
E`.xu>Yyj
/* (non-Javadoc) s*k)h,\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j6GIB_
*/ hZx&j{
public void sort(int[] data) { 8M99cx*K
int[] temp=new int[data.length]; wM+1/[7
mergeSort(data,temp,0,data.length-1); 4.!1odKp
} } ?j5V
B?! L~J@p
private void mergeSort(int[] data,int[] temp,int l,int r){ 6Ijt2c'A}
int mid=(l+r)/2; r[S(VPo[()
if(l==r) return ; CRK%^3g
mergeSort(data,temp,l,mid); ij
?7MP
mergeSort(data,temp,mid+1,r); 'XK 'T\m
for(int i=l;i<=r;i++){ yp#!$+a}
temp=data; PMfW;%I.
} 4yyw:"
int i1=l; $-}&RW9
int i2=mid+1; %T({;/
for(int cur=l;cur<=r;cur++){ Sc7 Ftb%
if(i1==mid+1) >Uw:cq
data[cur]=temp[i2++];
)0VL$A
else if(i2>r) jE*{^+n
data[cur]=temp[i1++]; 7*l$i/!
else if(temp[i1] data[cur]=temp[i1++]; z`zz8hK.
else geme_
data[cur]=temp[i2++]; eFG/!b<17
} 3`bQ0-D;
} fpR|+`k
z`wIb
} Zw]"p63eMa
l7|z]v-
改进后的归并排序: wZ(1\
M(
fz(YP=@ZnP
package org.rut.util.algorithm.support; Lc{AB!Br
ANhqS
import org.rut.util.algorithm.SortUtil; iXDG-_K
9{u=
/** cnu&!>8V
* @author treeroot IL*B@E8
* @since 2006-2-2 x3q^}sj%
* @version 1.0 y
bhFDx
*/ ?2]fE[SqY
public class ImprovedMergeSort implements SortUtil.Sort { @7Ec(]yp
f/)Y {kS6
private static final int THRESHOLD = 10; QP(0
y98FEG#S}
/* "wgPPop
* (non-Javadoc) M+ +Dk7B
* }9^:(ty2A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M& ZKc
*/ $94lF~
public void sort(int[] data) { y\T$) XGV
int[] temp=new int[data.length]; tgF~5
o}?
mergeSort(data,temp,0,data.length-1); P T;{U<5
} 3"h*L8No
2Re8rcQQU
private void mergeSort(int[] data, int[] temp, int l, int r) { 2R\K!e
int i, j, k; 5i[O\@]5
int mid = (l + r) / 2; 9hzu!}~'I
if (l == r) Nf| 0O\+%y
return; 9^a|yyzL
if ((mid - l) >= THRESHOLD) Jh-yIk
mergeSort(data, temp, l, mid); E=I'$*C\D
else }>{R<[I!G
insertSort(data, l, mid - l + 1); &W\e 5X<A
if ((r - mid) > THRESHOLD) ?MH=8Cl1w
mergeSort(data, temp, mid + 1, r); `i`P}W!F
else w|f+OlPXq
insertSort(data, mid + 1, r - mid); "S;4hO
f)Qln[/
for (i = l; i <= mid; i++) { \@@ G\\)er
temp = data; "yu{b]AU
} A[l
)>:
for (j = 1; j <= r - mid; j++) { "9;
temp[r - j + 1] = data[j + mid]; 2+&