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。 Pv3qN{265
插入排序: z@U5
Y;#H0v>E
package org.rut.util.algorithm.support; g96]>]A<{
l09SWug
import org.rut.util.algorithm.SortUtil; vBYk"a6SD
/** z,c=."<z
* @author treeroot 1-~sj)*k
* @since 2006-2-2 (x140_TH~
* @version 1.0 U[|o!2$
*/ MQq!<?/
public class InsertSort implements SortUtil.Sort{ F5%IsAH
lt& c/xi_
/* (non-Javadoc)
J7p?9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \T {<{<n
*/ jO}<W 1qy
public void sort(int[] data) { cXbQ
int temp; `c? 8i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); li9>zjz
} !'*1;OQ
} QSyPtjg]
} ?JMy
I\@`AU
} #Q$+ AdY|
}ZJ*N Y
冒泡排序: Xd5uF/w
&;[e
package org.rut.util.algorithm.support; \-CL}Z}S
h
I7ur
import org.rut.util.algorithm.SortUtil; =DwY-Ex
(w-@b70E
/** 1"~$(@oxG
* @author treeroot rkn'1M&u
* @since 2006-2-2 ?63ep:QEk
* @version 1.0 Y?\PU{O
*/ xM**n3SZ`
public class BubbleSort implements SortUtil.Sort{ *{dMo,.eI
F&a)mpFv3c
/* (non-Javadoc) `&i\q=u+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J
}|6m9k!
*/ > *soc!# Y
public void sort(int[] data) { m.Ki4NUm
int temp; ^CW{`eBwk
for(int i=0;i for(int j=data.length-1;j>i;j--){ rb*;4a
if(data[j] SortUtil.swap(data,j,j-1); 1!Afq}|
} R7/ET"
} i!yE#zew
} 9*2^2GR^;
} yZc#@R[0
f"t+r
/d
} uMX\Y;N
"~L$oji
选择排序: }70A>JBw
^J)0i_RS
package org.rut.util.algorithm.support; 3f(tb%pa5
ei(S&u<
import org.rut.util.algorithm.SortUtil; yaYJmhG
qm< mw"]
/** 7KN+ @6!x
* @author treeroot HNd? '
* @since 2006-2-2 e*M-y C
* @version 1.0 vr }-u
*/ OM81$Xo=
public class SelectionSort implements SortUtil.Sort { fT{%zJU
t]E@AJOK
/* 5
Q/yPQN
* (non-Javadoc) {Mc;B9W
* a"^rOiXR{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U\-=|gQ'
*/ E_\V^
public void sort(int[] data) { cVli^*se
int temp; pj Md
for (int i = 0; i < data.length; i++) { h_6c9VI
int lowIndex = i; r!~6.
for (int j = data.length - 1; j > i; j--) { zBc |gx
if (data[j] < data[lowIndex]) { Wpc8T="q
lowIndex = j; 3
J5lz~6
} =3dd1n;8>
} 8khIy-9-'
SortUtil.swap(data,i,lowIndex); >L433qR
} %e(DPX
} M2I*_pI
q4Mv2SPT
} cp6I]#X
3sp-0tUE
Shell排序: `%*`rtZ+H.
n?"("Fiw
package org.rut.util.algorithm.support; 'xGTaKlm,
tac\Ki?
import org.rut.util.algorithm.SortUtil; "[0.a\ d<
#I\" 'n5M
/** Z>pZ|
* @author treeroot
g([M hf#
* @since 2006-2-2 A=wG};%_
* @version 1.0 'V\V=yc1
*/ a%5/Oc[[
public class ShellSort implements SortUtil.Sort{ @@ cc/S
$g),|[x+(
/* (non-Javadoc) hD{
`j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hii#kB2
*/ @M"(
r"ab
public void sort(int[] data) { GP;N1/=
for(int i=data.length/2;i>2;i/=2){ V>D}z8w7
for(int j=0;j insertSort(data,j,i); )y{:Uc\4!
} ja6V*CWb
} wo;OkJKF
insertSort(data,0,1); ]E6r)C
} 3-'3w ,
]r'D
/** @9R78Zra
* @param data Cj$:TWYIh[
* @param j '_5|9
}
* @param i hzT)5'_
*/ g>l+oH[Tv|
private void insertSort(int[] data, int start, int inc) { zrf
tF2U
int temp; "Q{l])N
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]LEaoOecu
} >GLoeCRNu
} .R
l7,1\
} ;#9ioGx
=3!o_
} M&)\PbMc
wJ7^)tTRF
快速排序: .(3ec/i4CF
$x,EPRNs
package org.rut.util.algorithm.support; {e q378d
gA%
A})
import org.rut.util.algorithm.SortUtil; H \'1.8g/
%ZX9YuXQ
/** DEbMb6)U
* @author treeroot FBbaLqgVF{
* @since 2006-2-2 sN2m?`?"G
* @version 1.0 WA0D#yuJ/
*/ lQBEq"7$
public class QuickSort implements SortUtil.Sort{ ]^T-X/v9
TiF+rA{t
/* (non-Javadoc) s;Gg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A=IpP}7J
*/ v$w}UC%uf
public void sort(int[] data) { dfKGO$}V
quickSort(data,0,data.length-1); A^#\=ZBg1
} O6vxp?:^
private void quickSort(int[] data,int i,int j){ '5LdiSk
int pivotIndex=(i+j)/2; [`s0 L#
file://swap T\g+w\N
SortUtil.swap(data,pivotIndex,j); :`Ut.E~.
GC' e
int k=partition(data,i-1,j,data[j]); 9 M%Gnz
SortUtil.swap(data,k,j); a2tEp+7?
if((k-i)>1) quickSort(data,i,k-1); ar6+n^pi0]
if((j-k)>1) quickSort(data,k+1,j); YB<nz<;JR
qw?(^uZNW
} CtV|oeJ
/** `-OzjbM
* @param data 0y+^{@lU
* @param i m#Z&05^
* @param j GqR|hg
* @return ~J&-~<%P}
*/ ge:a{L
private int partition(int[] data, int l, int r,int pivot) { &(A#F[ =0
do{ 6h2keyod
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q?dd5JzZy,
SortUtil.swap(data,l,r); y_}vVHT,
} q4&! mDU
while(l SortUtil.swap(data,l,r); iC/*d
return l; kfZ`|w@q
} #v<`|_
;?tH8jf>
} ",D!8>=s
h7^&:
改进后的快速排序: EJ#I7_
?d^6ynzn
package org.rut.util.algorithm.support; yn_f%^!G
@#OL{yMy
import org.rut.util.algorithm.SortUtil; #dL,d6a
7Q9Hk(Z9
/** z k/`Uz
* @author treeroot dk
nM|
* @since 2006-2-2 tWTHyL
* @version 1.0 4
ZnQpKg
*/ `;+x\0@<
public class ImprovedQuickSort implements SortUtil.Sort { -X!<$<\y;
G3io!XM)D
private static int MAX_STACK_SIZE=4096; q+9->D(6
private static int THRESHOLD=10; #e-K It
/* (non-Javadoc) ~`FRU/@r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q
i yK
*/ D]fuX|f~ul
public void sort(int[] data) { z$R&u=J
int[] stack=new int[MAX_STACK_SIZE]; 7PMz6
BqX"La,
int top=-1; G=|?aK{p
int pivot; %W\NYSm
int pivotIndex,l,r; 5=I({=/>
cB){b'WJ
stack[++top]=0; 5>.ATfAsV
stack[++top]=data.length-1; C/Tk`C&
) hs&?:)
while(top>0){ #$xtUCqX
int j=stack[top--]; _>\33V-?b
int i=stack[top--]; P|@[D=y
@I?,!3`jS
pivotIndex=(i+j)/2; XXum2eA
pivot=data[pivotIndex]; ^UJIDg7zS
nUpj+F#
SortUtil.swap(data,pivotIndex,j); DdI%TU K,
(0q`eO2
file://partition 9e
K~g0m
l=i-1; :JG5)H}j+
r=j; d9:I.SA)E
do{ e8("G[P>
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y/Y}C.IWp)
SortUtil.swap(data,l,r); Mb2a;s
} /)J]ItJlz
while(l SortUtil.swap(data,l,r); M?sax+'
SortUtil.swap(data,l,j); !7I07~&1
Z40k>t
D
if((l-i)>THRESHOLD){ 36(qe"s
stack[++top]=i; #;a+)~3*O
stack[++top]=l-1; 1?H;
c5?d&
} #~-Xt!I
if((j-l)>THRESHOLD){ ?wG
stack[++top]=l+1; Zqm%qm:
stack[++top]=j; Yv]vl6<
} 0vfMJzk
WLXt@dK*u
}
gPB=Z!
file://new InsertSort().sort(data); *uRDB9#9,
insertSort(data); q;nAq%
} 2QbKh)
/** fDns r"T
* @param data 9_5>MmiB
*/ 5l8F.LtO\
private void insertSort(int[] data) { `PtB2,?
int temp; cQ- #]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jc_k\
} cI8\d 4/py
} }w35fG^
} Uz_ob9l<#H
(Ud"+a
} [DjlkA/Zg
n^;-&
归并排序: >g!$H}\
Dz~^AuD6
package org.rut.util.algorithm.support; paV1o>_Rd
>ph=?MKD
import org.rut.util.algorithm.SortUtil; 2( GYk
U9`Co&Z2
/** .$cX:"_Mk
* @author treeroot ]Whv%
* @since 2006-2-2 2
oL$I(83
* @version 1.0 (G+)v[f
*/ ZKt{3P
public class MergeSort implements SortUtil.Sort{ THOYx :Nr;
$ bMmyDw
/* (non-Javadoc) _X?_|!;J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [AFR \{
*/ !U4YA1>>
public void sort(int[] data) { ]lGkZyUhI
int[] temp=new int[data.length]; aOinD
mergeSort(data,temp,0,data.length-1); X=?9-z]
QO
} ]Gm4gd`
Jb> X$|N'%
private void mergeSort(int[] data,int[] temp,int l,int r){ /<T{g0s
int mid=(l+r)/2; Fg
p|gw4
if(l==r) return ; w$&;s<0
mergeSort(data,temp,l,mid); <nk/w5nKL
mergeSort(data,temp,mid+1,r); DS4y@,/)'
for(int i=l;i<=r;i++){ M*T!nwb
temp=data; T"H"m4{'
} |AExaO"jk
int i1=l; <6.`(isph
int i2=mid+1; e:MbMj6`
for(int cur=l;cur<=r;cur++){ um/F:rp
if(i1==mid+1) Y<Ae_yLa
data[cur]=temp[i2++]; s."N7F
else if(i2>r) *=O3kUoL
data[cur]=temp[i1++]; 2H8\P+
else if(temp[i1] data[cur]=temp[i1++]; TT;ls<(Lg
else Zr6.Nw
data[cur]=temp[i2++];
N8x&<H
} y~OP9Tg
} ^pY8'LF6
>U\P^yU
} x3 ( _fS
Dh}d-m_5
改进后的归并排序: ql5&&e=-
^u90N>Dvq
package org.rut.util.algorithm.support; FD%OG6db];
7N OF^/nU
import org.rut.util.algorithm.SortUtil; fY=:geB
b$
8R
/** #Ddo` >`&
* @author treeroot I%Z=O=
* @since 2006-2-2 3 TV4|&W;
* @version 1.0 PD^ 6Ywn>s
*/ l*CCnqE
public class ImprovedMergeSort implements SortUtil.Sort { %)d7iT~M
;2?fz@KZ
private static final int THRESHOLD = 10; ^HuB40
(*vBpJyz%
/*
Zf??/+[
* (non-Javadoc) e=#D1
* G|t0no\f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'vq0Tw5
*/ rkdA4'66w
public void sort(int[] data) { ^)`e}}
int[] temp=new int[data.length]; `|92!Ej
mergeSort(data,temp,0,data.length-1); IY!8j$'|
} fX\y/C
b
o_`P3
private void mergeSort(int[] data, int[] temp, int l, int r) { ?djH!
int i, j, k; psiuoYf
int mid = (l + r) / 2; sUiO~<Ozpk
if (l == r) CZy3]O"qW
return; <wd;W;B
if ((mid - l) >= THRESHOLD) 96; gzG@1!
mergeSort(data, temp, l, mid); Y}C|4"V
else y
GmFi
insertSort(data, l, mid - l + 1); 8aM\B%NGWi
if ((r - mid) > THRESHOLD) NCo!n$O1~
mergeSort(data, temp, mid + 1, r); T>hm\ !
else 3-Xd9ou
insertSort(data, mid + 1, r - mid); S|6i]/
q^ &r<i
for (i = l; i <= mid; i++) { U ){4W0
temp = data; ![I|hB
} m9DTz$S.
for (j = 1; j <= r - mid; j++) { i;Kax4k
temp[r - j + 1] = data[j + mid]; BbL]0i
} /m^G 99N
int a = temp[l]; E1w8d4P,G
int b = temp[r]; *L Y6hph"
for (i = l, j = r, k = l; k <= r; k++) { 7@k3-?q
if (a < b) { B:cQsaty
data[k] = temp[i++]; ;v.J
D7
a = temp; CeUXGa|C
} else { P{J9#.Zq&s
data[k] = temp[j--]; sK/ymEfRv
b = temp[j]; 3Tw9Uc\vT
} )
jM-5}"
} Z TB6m`
} | (,{&\
6p3cMJ'8y
/** +^AAik<yl
* @param data #i*PwgC%_
* @param l *mYGs )|
* @param i zF? 6"
*/ ~6QV?j
private void insertSort(int[] data, int start, int len) { d@b2XCh<K
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Tfv@oPu
} n!Y}D:6c6
} q @wX=
} Imclz4'8
} *1:kIi7_
;WrG\R/|
堆排序: +Oo-8f*
e(&u3 #7Nn
package org.rut.util.algorithm.support; vkG%w;
fwUF5Y
import org.rut.util.algorithm.SortUtil; )!G 10
t!B,%,Dp
/** PTXS8e4
* @author treeroot VuK>lY&
* @since 2006-2-2 o,0
Z^"|
* @version 1.0 adgd7JjI*
*/ ,u-9e4
public class HeapSort implements SortUtil.Sort{ 9Gx`[{wI9<
*7L1SjZw
/* (non-Javadoc) ,&* BhUC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2<'ol65/c
*/ P^lzbWj^
public void sort(int[] data) { \SYeDy
MaxHeap h=new MaxHeap(); 0Xn,q]@Z
h.init(data); $d.Dk4.ed
for(int i=0;i h.remove(); -0NkAQrg
System.arraycopy(h.queue,1,data,0,data.length); KO"+"1 .
} i;IhsKO0R
9gIim
private static class MaxHeap{ /pLf?m9
23Q 88z
void init(int[] data){ rx<P#y]3)
this.queue=new int[data.length+1]; I'2I'x\M
for(int i=0;i queue[++size]=data; N+pCC
fixUp(size); yi(IIW
} wqzpFPk(
} @s,kx.S
A.$P1zwC
private int size=0; P1$D[aF9$
5rQu^6&
private int[] queue; L EFLKC
>S{8sN
public int get() { $uRi/%Q9
return queue[1]; =&FaMR2
} {/48n83n
[O]rf+NZ(5
public void remove() { {*
w _*
SortUtil.swap(queue,1,size--); z;N`jqo
fixDown(1); d%E*P4Ua
} "\5 T
6
file://fixdown 7(|f@Y~*
private void fixDown(int k) { E!L_"GW
int j; }-9 c1&m
while ((j = k << 1) <= size) { >8$Lqj^i
if (j < size %26amp;%26amp; queue[j] j++; |PGTP#O<
if (queue[k]>queue[j]) file://不用交换 3 `NSSS
break; n +2>jY
SortUtil.swap(queue,j,k); 4 DV,f2:R4
k = j; QDKY7"H
} e:T9f('
} -%V~1
private void fixUp(int k) { T?tZ?!6
while (k > 1) { _|;{{8*?
int j = k >> 1; nD!t*P
if (queue[j]>queue[k]) Pw6%,?lQ
break; 4VC8#x1
SortUtil.swap(queue,j,k); }I18|=TB
k = j; \#F>R,
} >Dz8+y
} +NeoGnj
J90
)v7
} tOo\s&j
\+x#aN\
} w")m]LV
ob|^lAU
SortUtil: ;w._/
OgHqF,0MN
package org.rut.util.algorithm; 8~|v:qk
OAgZeK$
import org.rut.util.algorithm.support.BubbleSort; -av=5hm
import org.rut.util.algorithm.support.HeapSort; q &S@\b
import org.rut.util.algorithm.support.ImprovedMergeSort; OXB 5W#$
import org.rut.util.algorithm.support.ImprovedQuickSort; E[BM0.#bZ
import org.rut.util.algorithm.support.InsertSort; |A+,M"F?
import org.rut.util.algorithm.support.MergeSort; Deq@T {
import org.rut.util.algorithm.support.QuickSort; o5m]Gqa
import org.rut.util.algorithm.support.SelectionSort; K%u>'W
import org.rut.util.algorithm.support.ShellSort; 8m[o*E.4F
TpdYU*z_Br
/** u}rJqZ
* @author treeroot %Z-xh<&
* @since 2006-2-2 SEE:v+3|
* @version 1.0 +k/=L9#e
*/ [e{D
public class SortUtil { V=YDqof
public final static int INSERT = 1; Fr2F&NN`D
public final static int BUBBLE = 2; V0%a/Hi v
public final static int SELECTION = 3; - Nt8'-
public final static int SHELL = 4; +G,_|C2J
public final static int QUICK = 5; xZ
SDA8kS
public final static int IMPROVED_QUICK = 6; bXqTc2>=
public final static int MERGE = 7; ['3E'q,4&
public final static int IMPROVED_MERGE = 8; `\/\C[Gg
public final static int HEAP = 9; ,8cVv->u/
`P$X`;SwE
public static void sort(int[] data) { NSq29#
sort(data, IMPROVED_QUICK); JgV4-B0
} H. o3d/8:
private static String[] name={ IIF <Zkpb
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ID<[=es6
}; E!>MJlA:k6
Jid_&\
private static Sort[] impl=new Sort[]{ %_~1(Glz
new InsertSort(), _SH~.Mt_!
new BubbleSort(), h8;H<Y;yQ
new SelectionSort(), .B'ws/%5\
new ShellSort(), BJ5^-|
new QuickSort(), d@tNlFfS
new ImprovedQuickSort(), u(PUbxJ
V
new MergeSort(), =)x+f/c]
new ImprovedMergeSort(), :'[ha$
new HeapSort() ?u0qYep:
}; ]O0u.=1k
=c%gV]>G
public static String toString(int algorithm){ def\=WyK
return name[algorithm-1]; m\_v{1g
} ?=HoU3
Owv}lJ
public static void sort(int[] data, int algorithm) { E
0@u|
impl[algorithm-1].sort(data); Sw>,Q-32
} *Xn6yL9
A+z}z@K
public static interface Sort { e+?;Dc-SJ\
public void sort(int[] data); Zq:c2/\c}
} _,f7D/dq
UMHFq-
public static void swap(int[] data, int i, int j) { 8?w#=@ s
int temp = data; \{qtdTd
data = data[j]; ']Z%6_WF
data[j] = temp; }}oIZP\qM
} 162Dj$
} D}N4*L1