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。 2$=?;~
插入排序: *sZOws<
!=|3^A
package org.rut.util.algorithm.support; !u>29VN
&{/ `Q,
import org.rut.util.algorithm.SortUtil; >Y)jt*vQ
/** B.Ic8'
* @author treeroot |giK]Z
* @since 2006-2-2 4+' yJ9~,B
* @version 1.0 HrEZ]iQ@O0
*/ x_bS-B)%Y:
public class InsertSort implements SortUtil.Sort{ GT<Y]Dk
;:8_H0X'K
/* (non-Javadoc) [1 w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mY#[D;mUe
*/ e=1&mO?
public void sort(int[] data) { L?4c8!Q
int temp; _"##p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mNWmp_c,1
} @H1pPr
} jYO@ %bQ
} o @~XX@5l
I zM =?,`
} )Xl/|YD
-Ufd+(
冒泡排序: y<8)mw
R%8nR6iG"
package org.rut.util.algorithm.support; 9I+;waLlB
YJ.'Yc
import org.rut.util.algorithm.SortUtil; #B;` T[
-"<H$
/** ) ?+-Z2BwA
* @author treeroot W^60BZ
* @since 2006-2-2 9%>H}7=
* @version 1.0 #O\4XZ,Lv
*/ $9M>B<]
public class BubbleSort implements SortUtil.Sort{ :-ax5,J> q
3)EslBA7i
/* (non-Javadoc) )}]<o
|'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D>VI{p
*/ -r/# 20Y
public void sort(int[] data) { ?b^VEp.;}
int temp; rV[#4,} PF
for(int i=0;i for(int j=data.length-1;j>i;j--){ J &u&G7#S
if(data[j] SortUtil.swap(data,j,j-1); =_D82`p
} B`T|M$Ug
} lWd)(9Kj
} q !EJs:AS
} S%kE<M?
v}+axu/?
} 3k5Mty
G0^23j
选择排序: mhnD1}9,Ih
B.'@~$
package org.rut.util.algorithm.support; />FrMz8;(
*~lD;{2
import org.rut.util.algorithm.SortUtil; xQk]a1
&!N5}N&
/** jF Bq>
* @author treeroot agM.-MK
* @since 2006-2-2 ?*9U
d
* @version 1.0 c<y.Y0
*/ {5#P1jlT
public class SelectionSort implements SortUtil.Sort { Olj]A]v}
]6pxd \Q
/* nAoGG0$5
* (non-Javadoc) Z?ZcQ[eC
* h<Yn0(.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x
+q"%9.c
*/ F$ZWQ9&5U0
public void sort(int[] data) { Z,lUO.
int temp; p<Ah50!B
for (int i = 0; i < data.length; i++) { 0`h[|FYV
int lowIndex = i; zt[TShD^
for (int j = data.length - 1; j > i; j--) { e%R+IH5i
if (data[j] < data[lowIndex]) { 2^ ^;Q:
lowIndex = j; 5y(irbk7
} J.$<Lnt>u
} +y6|Nq
SortUtil.swap(data,i,lowIndex); 95T%n{rz
} E&{*{u4
} Zv7@
0k:&7(j
} T9t9])
q[M7)-
Shell排序: @7u4v%,wB
KjZ^\lq'
package org.rut.util.algorithm.support; ~9kvC&/{[
SjtGU47$!
import org.rut.util.algorithm.SortUtil; CBnD)1b\
6 KnD(im
/** Ook3B
* @author treeroot 9`4h"9dO
* @since 2006-2-2 ,\+tvrR4X
* @version 1.0 Gxi;h=J2)>
*/ JEdtj1v{O
public class ShellSort implements SortUtil.Sort{ (PsA[>F
#7lkj:j4
/* (non-Javadoc) 3a!/EP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rHT8a^MO
*/ M0=ZAsN
public void sort(int[] data) { &I'~:nWpt
for(int i=data.length/2;i>2;i/=2){ ~<v{CBq[
for(int j=0;j insertSort(data,j,i); @T;O^rE~N
} 6|T{BOW!d
} 0WF(Ga/o
insertSort(data,0,1); O<6/0ub&+h
} l>~:lBO
X2M<DeF:
/** puZ<cV
e/
* @param data iL|*g3`-f
* @param j l2VO=RDiW
* @param i ;cp-jY_U
*/ O3bK>9<K
private void insertSort(int[] data, int start, int inc) { `Jm{K*&8Q
int temp; oxO}m7ULH
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oq8~PTw
} 6WceDY
} j"94hWb
} 4fzq C)
xBgf)'W_Z
} 2-j|q6m5
Qi=rhN`
快速排序: M? [lpH3
JO :m:
M
package org.rut.util.algorithm.support; 3C_g)5
_:
rt^z#2$
import org.rut.util.algorithm.SortUtil; *ivbk /8
Zr}`W\
/** pxI*vgfN7
* @author treeroot (g7nMrE$j
* @since 2006-2-2 /
s H*if
* @version 1.0 jvu,W4
*/
~{^AP
public class QuickSort implements SortUtil.Sort{ ei\X/Z*q%P
Ql&P1|&
/* (non-Javadoc) <>j,Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *zX<`E
*/ =_^g]?5i
public void sort(int[] data) { ik8e
quickSort(data,0,data.length-1);
`d
OjCA_&
} hp,T(D|
private void quickSort(int[] data,int i,int j){ g:[&]o} :9
int pivotIndex=(i+j)/2; 6Otv[8^}
file://swap }ZVNDvGH
SortUtil.swap(data,pivotIndex,j); /jj@ =H
ZN1QTb
int k=partition(data,i-1,j,data[j]); {GHGFi`Z
SortUtil.swap(data,k,j); yt!K|g
if((k-i)>1) quickSort(data,i,k-1); Z#V[N9L
if((j-k)>1) quickSort(data,k+1,j); A8Jbl^7E+
fi bR:8
} HowlJ[ km%
/** tCc}}2bC&
* @param data h$ZF[Xbfe
* @param i _^P>@
^
* @param j 5+ fS$Q
* @return Cs]xs9
*/ B5I(ai7<M
private int partition(int[] data, int l, int r,int pivot) { ;H:qDBH
do{ c#HocwP@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5~rs55W
SortUtil.swap(data,l,r); $<ZX};/D
} ~gBqkZ# y?
while(l SortUtil.swap(data,l,r); wV5<sH__
return l; oK(ua
} QQ!,W':
kQ'G+Kw~F
} ][?GJ"O+U
Z<&:
W8n
改进后的快速排序: TzK?bbgr!
HH+rib'u
package org.rut.util.algorithm.support; xPb`CY7
C{2UPG4 x
import org.rut.util.algorithm.SortUtil; ^'[ |
Q7}wY
/**
VJ=!0v
* @author treeroot 58v5Z$%--
* @since 2006-2-2 u[dI81`
* @version 1.0 VKR6 i
*/ YO,GZD`-o
public class ImprovedQuickSort implements SortUtil.Sort { pkk0?$l",
niA{L:4
private static int MAX_STACK_SIZE=4096; 7s.sbP~
private static int THRESHOLD=10; gl!3pTC
/* (non-Javadoc) VFYJXR{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GbL,k?ey
*/ 8=2)I.
public void sort(int[] data) { jXW71$B
int[] stack=new int[MAX_STACK_SIZE]; SR 43#!99Q
mS%D"
e
int top=-1; ")sq?1?X
int pivot; DD~8:\QD
int pivotIndex,l,r; el[6E0!@
IF1?/D"<
stack[++top]=0; nZ%<2
stack[++top]=data.length-1; $}\.)^[}
l|uN-{w
while(top>0){ MT&i5!Z
int j=stack[top--]; YEZ"BgUnbp
int i=stack[top--]; +:Y6O'h.
.d8~]@U!<
pivotIndex=(i+j)/2; }RyYzm2
pivot=data[pivotIndex]; 5,mb]v0k
(TY^
ky Sr
SortUtil.swap(data,pivotIndex,j); ](a<b@p
I`y}Ky<q
file://partition FijzO
l=i-1; ] xH `
r=j; L^0jyp
do{ ?EpY4k8,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3ea6g5kX
SortUtil.swap(data,l,r); sxuYwQ
} Z#Zk)
while(l SortUtil.swap(data,l,r); ZM)a4h,kcm
SortUtil.swap(data,l,j); TI*uNS;-
UnO -?
if((l-i)>THRESHOLD){ 1$
l3-x
stack[++top]=i; `Y(/G"]
stack[++top]=l-1; ChBZGuO:
} XS1>ti|<
if((j-l)>THRESHOLD){ /sYD+*a
stack[++top]=l+1; a2g1 5;kM
stack[++top]=j; +q=/}|
} >yL8C:J9
cy}2~w&s4
} )fC^h=Qp
file://new InsertSort().sort(data); f-23.]`v
insertSort(data); 4~Z\tP|Q.
} qvab>U`
/** \
(X~Z
* @param data Z-/ E$j
*/ 43(+3$V M7
private void insertSort(int[] data) { N}^\$sVu_
int temp; G,$jU9 f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4K4?Q+?
} .IG(Y!cB
} mk0rAN
} e<IT2tv>u
-ff*,b$Q/
} #PFf`7b,z
U`:$1*(`
归并排序: \6sp"KqP
eR;cl$
package org.rut.util.algorithm.support; C$?dkmIt
/gPn2e;
import org.rut.util.algorithm.SortUtil; 3
D+dM0wM
>S!QvyM(V
/** ^Ji5)c
* @author treeroot ,c7 8O8|
* @since 2006-2-2 rt."P20T
* @version 1.0 3UBG?%!$f
*/ & }}o9
public class MergeSort implements SortUtil.Sort{ ,H.q%!{h_
q5QYp
/* (non-Javadoc) e&wWlB![
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v_oNM5w
*/ #Ok*Or
public void sort(int[] data) { *xt3mv/<z
int[] temp=new int[data.length]; OHH wcJ 7N
mergeSort(data,temp,0,data.length-1); -,p(PK
} &%INfl>o7.
G#K=n
private void mergeSort(int[] data,int[] temp,int l,int r){ Qs*g)Yr
int mid=(l+r)/2; Y.=v!*p?}
if(l==r) return ; M3x%D)*
mergeSort(data,temp,l,mid); Ga~IOlS
mergeSort(data,temp,mid+1,r); P~=|R9t
for(int i=l;i<=r;i++){ CxwZ$0
temp=data; mNs&*h}
} 7zy6`OP
int i1=l; bl:.D~@
int i2=mid+1; jYuH
zf
for(int cur=l;cur<=r;cur++){ &grT}
if(i1==mid+1) H{9di\xnEm
data[cur]=temp[i2++]; Oi=kL{DG:s
else if(i2>r) VBsS1!g
data[cur]=temp[i1++]; O~ w&4F;{
else if(temp[i1] data[cur]=temp[i1++]; Rsqb<+7
else ULAAY$o@5
data[cur]=temp[i2++]; 7X1T9'jI2
} KLlW\MF1
} *qGxQ?/
j@Z4(XL
} ,GGr@})
lS9rgq<n
改进后的归并排序: P b2exS(
p]IF=~b
package org.rut.util.algorithm.support; i!jxjP
)CEfG
import org.rut.util.algorithm.SortUtil; ~x`OCii
`0Qzu\gRb
/** k6.}.
* @author treeroot l *.#g
* @since 2006-2-2 gHA"O@HgDI
* @version 1.0
"ifYy>d
*/ leX&py
public class ImprovedMergeSort implements SortUtil.Sort { *N<~"D
hbzU?_}
private static final int THRESHOLD = 10; a\aJw[d{
ZB<goEg
/* A2g+m
* (non-Javadoc) g!cTG-bh>J
* TDk'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iIA&\'|;i
*/ M-"%4^8_
public void sort(int[] data) { jBarY g
int[] temp=new int[data.length]; Hj$JXo[U
mergeSort(data,temp,0,data.length-1); WOG=Uy$
} 3<CCC+47
MAQkk%6[g
private void mergeSort(int[] data, int[] temp, int l, int r) { E"nIC,VZ
int i, j, k; `(.K|l}
int mid = (l + r) / 2; PiP\T.XANa
if (l == r) y2yW91B,
return; OT&J OTk\
if ((mid - l) >= THRESHOLD) W{Ine>
a'
mergeSort(data, temp, l, mid); DHd9yP9-
else TE3A(N'
insertSort(data, l, mid - l + 1); -y)ij``VY
if ((r - mid) > THRESHOLD) }RDGk+x7|
mergeSort(data, temp, mid + 1, r); oxha8CF]D
else >7p?^*&7;
insertSort(data, mid + 1, r - mid);
8dNwi&4
7q^osOj"
for (i = l; i <= mid; i++) { y08.R.
l
temp = data; |Xlpgdiu
} 4(f[Z9 iZ]
for (j = 1; j <= r - mid; j++) { db'Jl^
temp[r - j + 1] = data[j + mid]; Zchs/C 9{
} 2X!O '
int a = temp[l]; {'NdN+_C
int b = temp[r]; B#N(PvtE
for (i = l, j = r, k = l; k <= r; k++) { D
]: sR
if (a < b) { R6r'[-B2
data[k] = temp[i++]; Cq(dj^/~m
a = temp; Xk8+m>
} else { esIEi!d
data[k] = temp[j--]; mw-0n
b = temp[j]; `<cB 6
} q~48lxDU
} q]ER_]%Gna
} 2Xys;Dwx
k^:)|Z
/** 8vOKm)[%
* @param data c,:xm=&
* @param l QX1QYwcm G
* @param i ~k'KS
7c
*/ ]v{f!r=}
private void insertSort(int[] data, int start, int len) { ;!v2kVuS]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R'`q0MoN1
} UR>zL3
} $e)d!m.
} J=JYf_=4bc
} ~Pq1@N>n
FctqE/>}I
堆排序: J\^ZRu_K
<C`qJP-
package org.rut.util.algorithm.support;
XCc/\
$vlq]6V8
import org.rut.util.algorithm.SortUtil; PGF=q|j9K
*7u~`
/** O0`sg90,C
* @author treeroot rlEEf/m:
* @since 2006-2-2 o{f|==<t3#
* @version 1.0 ;}"_hLX
*/ [p^N].K$
public class HeapSort implements SortUtil.Sort{ X`JWYb4
"7mYs)=
/* (non-Javadoc) RB`Emp&T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GVP"~I~/:
*/ ]r8t^bqe
public void sort(int[] data) { pC2ZN
MaxHeap h=new MaxHeap(); [DpGL/Y.
h.init(data); e[.c^Hw
for(int i=0;i h.remove();
jT}3Zn
System.arraycopy(h.queue,1,data,0,data.length); A[`c2v-hF
} QV,X> !Nz
'Alt+O_
private static class MaxHeap{ J6r"_>)z
bw\fKZ
void init(int[] data){ &MKG#Y}
this.queue=new int[data.length+1]; 3z';Zwz &X
for(int i=0;i queue[++size]=data; +LuGjDn0
fixUp(size); EhL
8rR
} KJ M:-z@
} ufyqfID
eM
Ym@~4
private int size=0; Y /$`vgqs
=@q 9,H
private int[] queue; q<