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。 ^,#MfF6
插入排序: -:Jn|=
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package org.rut.util.algorithm.support; @rlL'|&X*
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import org.rut.util.algorithm.SortUtil; i%otvDn1
/** J%P{/ nR
* @author treeroot X?SLYm@v
* @since 2006-2-2 J5zu}U?
* @version 1.0 "v+%F
*/ O7xBMqMf
public class InsertSort implements SortUtil.Sort{ xL|4'8
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/* (non-Javadoc) q;<Q-jr&O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (RLJ_M|;/b
*/ (*G'~gSX
public void sort(int[] data) {
++CL0S$e
int temp; 8]&lUMaqVZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S%7%@Qs"%
} 1-}$sO c
} 70E@h=oQ
} W C3b_ia
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X
} ^" 4u1
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冒泡排序: eQsoZQA1
ixJwv\6Y
package org.rut.util.algorithm.support; m@y_Wt
4(p,@e31
import org.rut.util.algorithm.SortUtil; sX#7;,Ft7
% ^&D,
/** C72btS
* @author treeroot P"k,[ZQ
* @since 2006-2-2 1#jvr_ ga
* @version 1.0 Ts3(,Y
*/ qR8 BS4q_p
public class BubbleSort implements SortUtil.Sort{ 33w(Pw
eo'C)j# U
/* (non-Javadoc) Eq'oy~.oV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Nno@SP@
*/ hP=z<&zb/
public void sort(int[] data) { ]]_H|tO
int temp; {-,^3PI\
for(int i=0;i for(int j=data.length-1;j>i;j--){ @-BgPDi.Z
if(data[j] SortUtil.swap(data,j,j-1); f2FGod<CzN
} ,E8~^\HV
} BXX1G
} Wg5i#6y8w
} E3E$_<^
uT{.\qHo
} dWhF[q"
Ujss?::`G
选择排序: ;AE%f.Y
Vr<ypyC
package org.rut.util.algorithm.support; D(gpF85t
-QP&A >]7
import org.rut.util.algorithm.SortUtil; QLAyX*%B
TkV$h(#!f&
/** *!x/ia9
* @author treeroot +hd1|qa4
* @since 2006-2-2 2`w\<h
* @version 1.0 `-)Fx<e
*/ o)IcAqN$H
public class SelectionSort implements SortUtil.Sort { Z|a\rNv
-~ycr[}x
/* g63?(+Fz
* (non-Javadoc) >zWVM1\\j
* 9TILrK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "ktC1y1
*/ *oz=k
public void sort(int[] data) { 0!,)7
int temp;
Ss{
for (int i = 0; i < data.length; i++) { @DYkWivLu
int lowIndex = i; #L,5;R{`
for (int j = data.length - 1; j > i; j--) { 'BwM{c-O"
if (data[j] < data[lowIndex]) { Y&_1U/}h
lowIndex = j; 9=Rj9%
} L8j#lu
} N^8
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SortUtil.swap(data,i,lowIndex); r&-Ir3[
} IWcYa.=tZ
} },5_h0
^,KN@
} Q.[^5
8
O@bDMg
Shell排序: CmPix]YMQ
ICgyCsZ,
package org.rut.util.algorithm.support; ps6c>AN`A&
"Z6: d"S`
import org.rut.util.algorithm.SortUtil; `?L-{VtM3*
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/** SAGLLk07G
* @author treeroot 8M;G@ Q80
* @since 2006-2-2 |_;Vb
* @version 1.0 0\y@etb:mf
*/ c{t[iXDG
public class ShellSort implements SortUtil.Sort{ E5 0$y:
}AfK=1yOa
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x9NLJI21/
*/ GcPhT
public void sort(int[] data) { 6\9 9WQ
for(int i=data.length/2;i>2;i/=2){ d/ OIc){tD
for(int j=0;j insertSort(data,j,i); -ijQTB
} _r|$H_#
} U{>eE8l
insertSort(data,0,1); W+~ w
} .SdEhW15)
wQ,RZO3
/** "ppT<8Qi'
* @param data VPTT*a`
* @param j RfB""b8]=
* @param i =#<hT
s
*/ 'gojP
private void insertSort(int[] data, int start, int inc) { y6o^ Knl
int temp;
l%A~3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 97Qng*i
} Sn/~R|3XA7
} TUEEwDK-
} '.@R_sj
j]<T\O>t>
} h tn2`
t?]6>J_V
快速排序: %Ys>PzM
]Nvtiw 6
package org.rut.util.algorithm.support; 0n,5"B
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import org.rut.util.algorithm.SortUtil; *[7,@S/<F
v[6 BESu
/** +2w54X%?M
* @author treeroot `R^g[0 w'
* @since 2006-2-2 j#U?'g
* @version 1.0 Y(SgfWeK@1
*/ c+G: bb%p
public class QuickSort implements SortUtil.Sort{ 685o1c|
_A)<"z0E
/* (non-Javadoc) XI\aZ\v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "=<lPi
*/ UUY-EC7X
public void sort(int[] data) { d#a
quickSort(data,0,data.length-1); Ik1,?A
} h{sW$WA
private void quickSort(int[] data,int i,int j){ -&kQlr
int pivotIndex=(i+j)/2; KF'H|)!K
file://swap *4qsM,t
SortUtil.swap(data,pivotIndex,j); tTyu,%/m
`z)!!y
int k=partition(data,i-1,j,data[j]); GGF;T&DWad
SortUtil.swap(data,k,j); {zUc*9
if((k-i)>1) quickSort(data,i,k-1); "\BP+AF
if((j-k)>1) quickSort(data,k+1,j); n/8Kb.Vf
Xx|&%b{{r
} X{#@ :z$
/** ^^?DYC
* @param data 2ZtqZ64i
* @param i i?AZ|Ha[
* @param j Lx?bO`=qg7
* @return dY\"'LtF
*/ e|Sg?ocR
private int partition(int[] data, int l, int r,int pivot) { =b% J@}m`&
do{ B0z.s+.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yK?~XV:
SortUtil.swap(data,l,r); TKLy38
} Op)0D:BmR
while(l SortUtil.swap(data,l,r); u."fJ2}l0X
return l; R~w(]
} [l#WS
aG}9Z8D
} Pz|qy,
;6b#I$-J-
改进后的快速排序: @gi
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a
LmVOL{
package org.rut.util.algorithm.support; ?3}UO:B
c(#`z!FB
import org.rut.util.algorithm.SortUtil; <YeF?$S}
:GK{JP
/** j5'Jp}
* @author treeroot fr#lH3
* @since 2006-2-2 `8dE8:#Y
* @version 1.0 xk|$Oa
*/ ri JyH;)
public class ImprovedQuickSort implements SortUtil.Sort { FOk @W&
NxXVW
private static int MAX_STACK_SIZE=4096; jq0tMTb%L
private static int THRESHOLD=10; 0"2 [I
/* (non-Javadoc) NNl/'ge<\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@'V4oUz
*/ %&_(IY$d
public void sort(int[] data) { WQ5sC[&
int[] stack=new int[MAX_STACK_SIZE]; ^Nsl5
Bd
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int top=-1; i9!Urq-
int pivot; =|U2 }U;
int pivotIndex,l,r; 4G>|It
=(n'#mV
stack[++top]=0; zi?'3T%Ie
stack[++top]=data.length-1; 3yKI2en"
J.<%E[
z
while(top>0){ ax^${s|{-
int j=stack[top--]; 6ZG)`u".("
int i=stack[top--]; owMH
T![K
i
pivotIndex=(i+j)/2; .897Z|$VB
pivot=data[pivotIndex]; xu:m~8%
g
Go
SortUtil.swap(data,pivotIndex,j); #h3+T*5} 6
4{vd6T}V!
file://partition Eq8OAuN
l=i-1; ?J~JQe42
r=j;
l#~FeD
do{ 40#KcbMa|
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T),:8/
SortUtil.swap(data,l,r); huF L [
} *}_/:\v
while(l SortUtil.swap(data,l,r); @zJI0_Bp
SortUtil.swap(data,l,j); GcU/
i`>X5Da5
if((l-i)>THRESHOLD){ h+74W0
$
stack[++top]=i; <y.D0^68
stack[++top]=l-1; O h"^
} pt4xUu{
if((j-l)>THRESHOLD){ jO,<7FPs5
stack[++top]=l+1; |?|
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stack[++top]=j; N/%#GfXx
} ob00(?;H
og\XLJ}_
} $1?X%8V
file://new InsertSort().sort(data); d_,tXV"z&
insertSort(data); AfEEYP)N
} Nb#7&_f=
/** `e9uSF:9C
* @param data ;:|KfXiC8
*/ $McO'Bye{h
private void insertSort(int[] data) { 'i(p@m<'
int temp; Q'a N|^w"f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1ZL_;k
} fv_wK_.
%:
} GiZ'IDV
} !p&'so^-W
SNU
bY6
} AY;+Ws
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归并排序: o3yqG#dA
cx,A.Lc
package org.rut.util.algorithm.support; +lT]s#Fif
wY.g-3
import org.rut.util.algorithm.SortUtil; 4sj%:
nwo!A3w:
/** IA^)`l 7H
* @author treeroot I.u,f:Fl'
* @since 2006-2-2 3rY /6{
* @version 1.0 Mak9qaWqF>
*/ BZ<z@DJp
public class MergeSort implements SortUtil.Sort{ _cw^5
kV rT?
/* (non-Javadoc) Mdrv/x{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M=WE^v!b
*/ #P-HV
public void sort(int[] data) { y|Y3,s
int[] temp=new int[data.length]; 1Kh?JH
mergeSort(data,temp,0,data.length-1); 7h]R{ _
} Kk9 8FI0]
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private void mergeSort(int[] data,int[] temp,int l,int r){ 9,5II0N L
int mid=(l+r)/2; 62x< rph
if(l==r) return ; &&]!+fTZ\(
mergeSort(data,temp,l,mid); vEe
mergeSort(data,temp,mid+1,r); :UcS$M1LE
for(int i=l;i<=r;i++){ Gr@{p"./z
temp=data; N`Xnoehu
} *Z`eNz}
int i1=l; N#)VD\m
int i2=mid+1; G`#gV"PlC
for(int cur=l;cur<=r;cur++){ 4_%FSW8-
if(i1==mid+1)
CDYx/yO
data[cur]=temp[i2++]; uHro%UAd
else if(i2>r) ^X;Xti
data[cur]=temp[i1++]; ~fp+@j-A
else if(temp[i1] data[cur]=temp[i1++]; 3t8H?B12ow
else /Z "
4[
data[cur]=temp[i2++]; O|&TL9:
} D
Ok^ON
} aaugu.9
I!7.fuO
} W:poUG1UR
!(_xu{(DL
改进后的归并排序: K2rS[Kdfaq
z83:a)U
package org.rut.util.algorithm.support; `VFl|o#H
ZU.)K>'
import org.rut.util.algorithm.SortUtil; iB3+KR
f5b`gvCY,#
/** pd>a6 lI`
* @author treeroot ~R@m!'Ik
* @since 2006-2-2 :/[YY?pg-
* @version 1.0 N^yO- xk
*/ KHus/ M&0
public class ImprovedMergeSort implements SortUtil.Sort { @*"<U]
/-YlC(kL
private static final int THRESHOLD = 10; /N]Ow
oZ>`Qu
/* )4)iANH?
* (non-Javadoc) `;qv}
* xFm{oJ!]&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C$RAJ
*/ O mh&)|Iql
public void sort(int[] data) { Fl+tbF
int[] temp=new int[data.length]; ]t*P5
mergeSort(data,temp,0,data.length-1); FV6he[,
} 7k t7^V<
ua|Z`qUyq
private void mergeSort(int[] data, int[] temp, int l, int r) { Xf_tj:eO~
int i, j, k; x\bR j>%(
int mid = (l + r) / 2; W8yfa[z~J
if (l == r) ;Q>3N(
return; W3V{Xk|
if ((mid - l) >= THRESHOLD) LYy:IBI7_
mergeSort(data, temp, l, mid); T3t~=b>&L
else Ul713Bjz
insertSort(data, l, mid - l + 1); {8Jk=)(md
if ((r - mid) > THRESHOLD) <#p|z`N
mergeSort(data, temp, mid + 1, r); =7]Q6h@X
else aBVEk2 p
insertSort(data, mid + 1, r - mid); 3@ F+ E\k
c7l!G~yx'
for (i = l; i <= mid; i++) { So\| Ye
temp = data; X|damI%
} !Zyx$2K
for (j = 1; j <= r - mid; j++) { y|+~>'^JR
temp[r - j + 1] = data[j + mid]; p]V-<
} [%iUg\'7d
int a = temp[l]; ^Q)gsJY|I
int b = temp[r]; -90ZI1O`
for (i = l, j = r, k = l; k <= r; k++) { F%_,]^ n[
if (a < b) { 3n84YX{
data[k] = temp[i++]; zsMw5C
a = temp; Fy_<Ui
} else { p[@oF5M
data[k] = temp[j--]; _KM $u>B8
b = temp[j]; hKH$AEHEU}
} ^0-e,d
9h
} sPE)m_u
} emkMR{MY
bDZKQ&
/** D=82$$
* @param data RdvPsv}D
* @param l
\ +?,c\x
* @param i S1az3VJI\
*/ 8MeO U
private void insertSort(int[] data, int start, int len) { .i3lG(
YG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KXx@
{cv
} PQ&Q71
} "x.6W!
} C{`^9J-
} 2iR:*}5
[aWDD[#j~
堆排序: 5&-j{J0iV
Oa.f~|
package org.rut.util.algorithm.support; *_{l
5v!DYx
import org.rut.util.algorithm.SortUtil; ]w_
Ukh$`q}
/** ER;lkF`RF
* @author treeroot /H%<oAjp6
* @since 2006-2-2 3I;xU(rv
* @version 1.0 a* W_fxb
*/ %<=w [*i
public class HeapSort implements SortUtil.Sort{ .o\;,l2
da9*9yN
/* (non-Javadoc) (pT(&/\8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) co$Hi9JE
*/ z|G|Y 22
public void sort(int[] data) { }rKJeOo^x?
MaxHeap h=new MaxHeap(); E~<(i':
h.init(data);
d-ag
for(int i=0;i h.remove(); un$ Z7W/
System.arraycopy(h.queue,1,data,0,data.length); T1Gp$l
} GCP{Z]u
[xZ/ZWb/
private static class MaxHeap{ C-a*EG
aDN6MZM
void init(int[] data){ B@"SOX
this.queue=new int[data.length+1]; k W<Yda<a
for(int i=0;i queue[++size]=data; pB g|n=^
fixUp(size); b"R, p=M
} 5#TrCPi6A
} KdOh'OrT9.
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private int size=0; H9Y2n 0
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private int[] queue; D4=..;
IdV,%d{
public int get() { ,YP1$gj
return queue[1]; "<PoJPh
} [):{5hMA
97qtJ(ESI
public void remove() { J{Y6fHFi
SortUtil.swap(queue,1,size--); IgPV#
fixDown(1); V-D}U$fw
} 05l0B5'p
file://fixdown Xmap9x
private void fixDown(int k) { Q vv\+Jp^
int j; p3M#XC_H]
while ((j = k << 1) <= size) { rxs~y{Xi
if (j < size %26amp;%26amp; queue[j] j++; Z&+NmOY4
if (queue[k]>queue[j]) file://不用交换 /v}P)&
break; zuC 58B
SortUtil.swap(queue,j,k); XKz;o^1a^
k = j; )z2|"Lp
} 5y1or
} kq) +@p
private void fixUp(int k) { 1s{ISWm
while (k > 1) { u @{E{
int j = k >> 1; pY+.SuM
if (queue[j]>queue[k]) 7ei>L]gm%
break; Q!4i_)rM
SortUtil.swap(queue,j,k); ${A5-
k = j; `3f_d}b
} -Z:]<;qU
} /6+1{p
!cq=)xR
} "C_T]%'Wm
!GlnQ`T
} 5x*5|8
f,Sth7y
SortUtil: ksB
q+YuVQ-fx
package org.rut.util.algorithm; SQq6X63 \
1^Kj8*O8e
import org.rut.util.algorithm.support.BubbleSort; Yw6DJY
import org.rut.util.algorithm.support.HeapSort; 6B7<
import org.rut.util.algorithm.support.ImprovedMergeSort; 1vB-M6(
import org.rut.util.algorithm.support.ImprovedQuickSort; eq^TA1>T
import org.rut.util.algorithm.support.InsertSort; vS7/ ~:C
import org.rut.util.algorithm.support.MergeSort; C>*5=p|T
import org.rut.util.algorithm.support.QuickSort; 6-mmi7IfO
import org.rut.util.algorithm.support.SelectionSort; DRH'A!r!
import org.rut.util.algorithm.support.ShellSort; =?=)s
^y:FjQC:
/** T?W[Z_D
* @author treeroot nqZA|-}
* @since 2006-2-2 W3 ^z Ij
* @version 1.0 `d75@0:
*/ c5X`_
public class SortUtil { q:vz?G
public final static int INSERT = 1; 1*Sr5N[=
public final static int BUBBLE = 2; .
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public final static int SELECTION = 3; g d z
public final static int SHELL = 4; ;*y|8od
B
public final static int QUICK = 5; RXGHD19]
public final static int IMPROVED_QUICK = 6; 6!ZVd#OM%
public final static int MERGE = 7; \.c]kG>k-
public final static int IMPROVED_MERGE = 8; M6J/mOVx5
public final static int HEAP = 9; zL9VR;q
~}h^38
public static void sort(int[] data) { ~_'0]P\
sort(data, IMPROVED_QUICK); q\a[S*
}
KR&s?
private static String[] name={ dSwm|kIa
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" J#0GlK@"
}; 2< p{z
I^WIa"u_
private static Sort[] impl=new Sort[]{ fs&,w
new InsertSort(), ]\OWZ{T'j
new BubbleSort(), W@l+ciZ_
new SelectionSort(), 3@&bxYXm
new ShellSort(), ;SfNKu
new QuickSort(), U);OR
new ImprovedQuickSort(), 4py(R-8\
new MergeSort(), 1 ojhh7<
new ImprovedMergeSort(), 9u?(^(.
new HeapSort() L59bu/LfL
}; ,!`SY)
#e*X0;m
public static String toString(int algorithm){ Ejq=*UOP
return name[algorithm-1]; ]$3+[9x'
} mV<i JZh
CoJ55TAW
public static void sort(int[] data, int algorithm) { Yrpxy.1=F5
impl[algorithm-1].sort(data); 'V&2Xvl%
} 7U,k 2LS
\yM-O- {
public static interface Sort { )7W6-.d
public void sort(int[] data);
;;@IfZ ?j
} l<TIG3bs
K'NcTw#f
public static void swap(int[] data, int i, int j) { aM), M]m[
int temp = data; cqEHYJ;B
data = data[j]; S."7+g7Ar
data[j] = temp; I0DM=V>;
} hm3jpWi8
} r=qLaPG