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。 x.ZV<tDi7
插入排序: Z!=/[,b
VVeO>j d
package org.rut.util.algorithm.support; LNml["
P8!Vcy938
import org.rut.util.algorithm.SortUtil; FT73P0!8.
/** `),7*gn*)
* @author treeroot Acr\2!))
* @since 2006-2-2 d{&+xl^ll
* @version 1.0 bTZ/$7pp9
*/ +<6L>ZAL
public class InsertSort implements SortUtil.Sort{ QQPbKok>
;[WW,,!Y
/* (non-Javadoc) B, nCx=\S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *%(8z~(\
*/ 3 D,PbAd
public void sort(int[] data) { |$Dt6{h
int temp; w[\*\'Vm0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yo;/7gG>
} yXS ~PG
} HZCEr6}(
} /A\'_a|
CyO2Z
} Da1BxbDeI
*MW)APw=
冒泡排序: >x@]wsj
_z\oDd`'
package org.rut.util.algorithm.support; S6,AY(V
0F=UZf&
import org.rut.util.algorithm.SortUtil;
Tn2Z{.q$
@Ek''a$
/** 9>u2;
'Ls
* @author treeroot /A}3kTp
* @since 2006-2-2 B)/X:[
* @version 1.0 <(`dU&&%"}
*/ Mcc774'*9
public class BubbleSort implements SortUtil.Sort{ nH}api^0A
(7`goi7M
/* (non-Javadoc) fL
ng[&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "5%G[MB
*/ Tk$rwTCl
public void sort(int[] data) { 9_JK.
int temp; znhe]&Fw
for(int i=0;i for(int j=data.length-1;j>i;j--){ \lCr~D5
if(data[j] SortUtil.swap(data,j,j-1); PKT0Drv}c7
} En8-Hc#NC
} &tw.]3
} N~l(ng9'U
} &WN4/=QW-J
'cy35M
} 'IP'g,o++
}|H]>U&
选择排序: ps"crV-W
QW6F24
package org.rut.util.algorithm.support; g[*+R9'
d]VL(&
import org.rut.util.algorithm.SortUtil; jC
,foqL
rmUTl
/** N\=pH{
* @author treeroot 5!}xl9D
* @since 2006-2-2 :y !e6
* @version 1.0 8wwqV{O7
*/ :N\*;>
public class SelectionSort implements SortUtil.Sort { !cE>L~cza
kLR4?tX!
/* @YdS_W
* (non-Javadoc) .a:"B\B`
* \E9Z
H3;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r1EccY
*/ gR.zL>=_5e
public void sort(int[] data) { ]p(+m_F
int temp; epCU(d*b
for (int i = 0; i < data.length; i++) { x?KgEcnw2X
int lowIndex = i; s6OnHX\it7
for (int j = data.length - 1; j > i; j--) { *6e`km
if (data[j] < data[lowIndex]) { JTNQz
lowIndex = j; V;L^q?v
!
} x8.7])?w
} TU$/3fp*
SortUtil.swap(data,i,lowIndex); mC
n,I
} :g2?)Er-
} Wd_bDZQ
OZ&J'Y
} 24Z7;'
%Z 9<La
Shell排序: !e&ZhtTuC
+8."z"i3lE
package org.rut.util.algorithm.support; r|:|\"Yk
A`Z!=og=
import org.rut.util.algorithm.SortUtil; BZQ98"Fz*
Yb%H9A
/** bsC~
2S\o
* @author treeroot <(6@l@J|6
* @since 2006-2-2 ~KDx
* @version 1.0 ^6#FqK+{u
*/ SWD
v\Vr
public class ShellSort implements SortUtil.Sort{ <>A:Oi3^
'$ ~.x|
/* (non-Javadoc) jRm:9`.Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O}MY:6Pe
*/ S6h=}
V)
public void sort(int[] data) { =2s5>Oz+
for(int i=data.length/2;i>2;i/=2){ DOaEz?2)
for(int j=0;j insertSort(data,j,i); j,80EhZ
} v$K`C;
} ~&CaC
insertSort(data,0,1); k[6@\D-
} AEX]_1TG
;y%l OYm
/** yX,2`&c
* @param data ta> g:
* @param j 9hHQWv7TgK
* @param i XrYMv
WT
*/ Cmm"K[>Rx
private void insertSort(int[] data, int start, int inc) { ilw<Q-o4(
int temp; j?i Ur2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }pbyC
} 5`{ +y]
} &0K;Vr~D
} S6B(g_D|
DIB Az s
} Dw%>y93V
3P6pQm'.f
快速排序: fGcAkEstT!
.LEQ r)
package org.rut.util.algorithm.support; ';+;
?g}n$%*5y!
import org.rut.util.algorithm.SortUtil; +Q_X,gZ
qBpv[m
/** GD}3r:wDs
* @author treeroot i)1E[jc{p!
* @since 2006-2-2 Un]`Gd]:
* @version 1.0 kWF4k
*/ Hig=PG5I
public class QuickSort implements SortUtil.Sort{ ;*:d)'A
WHBQA\4
/* (non-Javadoc) n]}+ :
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~=Z&l
*/ K8pfk*NZ_@
public void sort(int[] data) { rwtSn?0z"
quickSort(data,0,data.length-1); /&$'v:VB
} Z_iu^Q
private void quickSort(int[] data,int i,int j){ #-'=)l}i1A
int pivotIndex=(i+j)/2; =jkC]0qx
file://swap iVd*62$@$
SortUtil.swap(data,pivotIndex,j); MnO,Cd6{%d
^8o'\V"m^
int k=partition(data,i-1,j,data[j]); h.%VWsAO7
SortUtil.swap(data,k,j);
@\i6m]\X
if((k-i)>1) quickSort(data,i,k-1); R I:x`do
if((j-k)>1) quickSort(data,k+1,j); VD,F?L!
6.6~w\fR8
} si/F\NDT
/** T73oW/.0X?
* @param data r%xp^j}
* @param i h76#HUBr!
* @param j f/Grem
* @return z<+".sD'
*/ jHT 4I>\
private int partition(int[] data, int l, int r,int pivot) { >L$y|8O
do{ s^^X.z ,
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F]
+t/
SortUtil.swap(data,l,r); +#6WORH0S
} Umm_FEU#]
while(l SortUtil.swap(data,l,r); YZ7rs]A
return l; R#
8D}5[&
} r4gkSwy
5dMIv<#T`
} C N"Vw
Vt5%A}.VQ
改进后的快速排序: w(J-[t118
@!Il!+^3
package org.rut.util.algorithm.support; teUCK(;23
$.QnM
import org.rut.util.algorithm.SortUtil; H+F?)VX}oA
1HN_
/** BtBo%t&
* @author treeroot "ltvD\
* @since 2006-2-2 8q)2)p
* @version 1.0 `-\4Dx1!q
*/ LOX[h$
public class ImprovedQuickSort implements SortUtil.Sort { +LQ2To
T?) U|
private static int MAX_STACK_SIZE=4096; ~r]ZD)
private static int THRESHOLD=10; )3.udx
/* (non-Javadoc) 6O"Vy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'M_8U0k
*/ <eO 7b6_
public void sort(int[] data) { F@ZG| &
int[] stack=new int[MAX_STACK_SIZE]; 69cOdIt^D
t}cj8DC!
int top=-1; BC(f1
int pivot; ]g IXG`
int pivotIndex,l,r; 7Hf6$2Wh
m,K\e
stack[++top]=0; H5, {Z
stack[++top]=data.length-1; =V"ags
L
FHyiIO
while(top>0){ @IB8(TZ5I
int j=stack[top--]; "3Dvc7V
int i=stack[top--]; VDPqI+z
k5w+{iOh
pivotIndex=(i+j)/2; ? Q.Y
pivot=data[pivotIndex]; 8<^[xe
zO2<Igb
SortUtil.swap(data,pivotIndex,j); %p/Qz|W
nkS6A}i3o
file://partition (^qcX;-
l=i-1; *7ap[YXZ\w
r=j; #E^ %h
do{ pP{b!1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e:AB!k^xp$
SortUtil.swap(data,l,r); xE9^4-Px*
} FDbx"%A
while(l SortUtil.swap(data,l,r); $
ohwBv3S
SortUtil.swap(data,l,j); ,PJl32
5irewh'R
if((l-i)>THRESHOLD){ >Eik>dQ a
stack[++top]=i; eY\tO"Hc
stack[++top]=l-1; /p<mD-:.M
} ^P"t
"
if((j-l)>THRESHOLD){ s<E_74q1
stack[++top]=l+1; _]j=[|q 9
stack[++top]=j; tK g%5;v
} xW/JItF
XwX1i!'54
} U,RIr8 G
file://new InsertSort().sort(data); +ywWQ|V
insertSort(data); m;KMr6sO
} 0 v/+%%4}
/** JR
2v}b
* @param data x[WT)
*/ 3`^]#Dh
private void insertSort(int[] data) { U=Z@Ipu5T
int temp; %04>R'mN
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y
+HVn0~qz
} -<ZzYQk^h
} (cC5zv*E
} fN0D\Mu!)b
aR}NAL_`w
} #xYkG5`lm
BzTm[`(h
归并排序: $T;3*D 90
GZI[qKDfB
package org.rut.util.algorithm.support; aFIet55o
#g ~~zwx/N
import org.rut.util.algorithm.SortUtil; @{+*ea7M(`
ut3jIZ1]
/** &_q;X;}
* @author treeroot um&N|5lHb
* @since 2006-2-2 A
javV
* @version 1.0 5:iril
*/ (ter+rTv
public class MergeSort implements SortUtil.Sort{ Y]Su<tgX?
p7.@ez ;
/* (non-Javadoc) Q>TaaGc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jG)>{D
*/ _'2r=a#`
public void sort(int[] data) { A<>W^ow
int[] temp=new int[data.length]; o }Tv^>L
mergeSort(data,temp,0,data.length-1); ~{2@-qcm
} , LcMNP r
SB$~Btr
private void mergeSort(int[] data,int[] temp,int l,int r){ e=8ccj
int mid=(l+r)/2; V X211U.Q
if(l==r) return ; -[^wYr=
mergeSort(data,temp,l,mid); AuO%F
YKY
mergeSort(data,temp,mid+1,r); dr'6N1B@
for(int i=l;i<=r;i++){ ?ZTB u[
temp=data; g](m& O
} #GWQ]r?
int i1=l; *D4H; P#
int i2=mid+1; >4h4t/G
for(int cur=l;cur<=r;cur++){ `kekc.*-[@
if(i1==mid+1) Sn0?_vH4
data[cur]=temp[i2++]; 8 ehC^Cg
else if(i2>r) Xk7zXah
data[cur]=temp[i1++]; zoUW}O
else if(temp[i1] data[cur]=temp[i1++]; TuaT-Z~U{
else zYls>fbp,
data[cur]=temp[i2++]; r9b`3yr=
} K''b)v X4
} azE>uEsE
&<tji8Dj
} zQ)[re)
{K[+nX=#
改进后的归并排序: 8d Ftp3(
2{U4wTu
package org.rut.util.algorithm.support; N3x}YHFF
W_iP/xL
import org.rut.util.algorithm.SortUtil; rWbL_1Eq
?I7H ):
/** d%]7:
* @author treeroot h[XGFz
* @since 2006-2-2 _10#rucr
* @version 1.0 J4S2vBe16
*/ 78 UT]<Q;K
public class ImprovedMergeSort implements SortUtil.Sort { J~c]9t
<D&75C#
private static final int THRESHOLD = 10; Q{$2D&
*&5G+d2
/* 8,B9y D
* (non-Javadoc) Nc;7KMOIA
* m m`:ci
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xmVK{Q YT$
*/ 8,['q~z
public void sort(int[] data) { 8|J%IE
int[] temp=new int[data.length]; }>tUkXlhJ<
mergeSort(data,temp,0,data.length-1); -Tz9J4xU&
} -nHc52,
9cj=CuE
private void mergeSort(int[] data, int[] temp, int l, int r) { 2V~Yb1P
int i, j, k; u$a%{46
int mid = (l + r) / 2; ]?<uf40Mm
if (l == r) y<;#*wB
return; {ifYr(|p`
if ((mid - l) >= THRESHOLD) l@Ml8+
mergeSort(data, temp, l, mid); <m )@~s?D
else :!r_dmJ
insertSort(data, l, mid - l + 1); PDGh\Y[AK,
if ((r - mid) > THRESHOLD) 'etCIl3
mergeSort(data, temp, mid + 1, r); ;)clCm46
else yq&]>ox
insertSort(data, mid + 1, r - mid); ?!A{n3\<
JFZZ-t;*
for (i = l; i <= mid; i++) { e@I?ESZ5
temp = data; IHB{US1G
}
gZvl
D
for (j = 1; j <= r - mid; j++) { S B'.
temp[r - j + 1] = data[j + mid]; 2Q Bq
} X1" `0r3
int a = temp[l]; x$A5Ved
int b = temp[r]; 8E$KR:/:4
for (i = l, j = r, k = l; k <= r; k++) { A4SM@ry
if (a < b) { O #0:6QX
data[k] = temp[i++]; !5{t1 oJ
a = temp; Hi|Oeu
} else { .c BJA&/
data[k] = temp[j--]; pX2 Ki^)]
b = temp[j]; a{H~>d<?
} o3uv"#
C
} 2I#fwsb
} mNuv>GAb
Ct.Q)p-wn
/** &d6'$h:kHb
* @param data IcaF4#
* @param l
,?`$~8
* @param i .Cm wR$u&
*/ .Mm8\].
private void insertSort(int[] data, int start, int len) { M6g!bK2l
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N4$0ptz#}G
} M)-+j{<
} w#-rl@JQ4
} $TR[SMj
} OcIJT1
#V~r@,
堆排序: bup;4~g
Ig S.U
package org.rut.util.algorithm.support; O":x$>'t
:~`E@`/
import org.rut.util.algorithm.SortUtil;
LqU]&AAh
!d"J,. )
/** 9ft7
* @author treeroot *^QfTKN
* @since 2006-2-2 g*!2.P
* @version 1.0 ,V|>nkQ
*/ pU}>}
public class HeapSort implements SortUtil.Sort{ -3bl!9h^
KuFDkT!
/* (non-Javadoc) Grkj@Q*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b-~Gt]%>m
*/ 8$@gAlI^
public void sort(int[] data) { {{giSW'
MaxHeap h=new MaxHeap(); 4Tq%V|5"&
h.init(data); )Ax1?Nx$
for(int i=0;i h.remove(); }`*]&I[P
System.arraycopy(h.queue,1,data,0,data.length); l-M~e]
} K b{
L2Mcs
private static class MaxHeap{ 9[8?'`m
(R Ttz
void init(int[] data){ ?p6+?\H
this.queue=new int[data.length+1]; 8Zwq:lV Q
for(int i=0;i queue[++size]=data; dG6Mo76
fixUp(size); Mi:$<fEX
} [NH[n#
} ZW*"Kok
W;u~}k<
private int size=0; +tl THK
m"jqHGFV
private int[] queue; I~#'76L[
hOw7"'# !
public int get() { [x,_0-_
return queue[1]; aS62S9nwX
} nq A>
}A
Xgop1
public void remove() { +vJ[k 2d
SortUtil.swap(queue,1,size--); -l$]>J~
fixDown(1); -pcYhLIn
} !3d+"tL
S
file://fixdown a o\+%s
private void fixDown(int k) { x|E$
f+
int j; J/ <[irC
while ((j = k << 1) <= size) { E!jM&\Z j
if (j < size %26amp;%26amp; queue[j] j++; ?][Mv`ST
if (queue[k]>queue[j]) file://不用交换 =>/aM7]
break; v#=-
SortUtil.swap(queue,j,k); !`Bb[BTf
k = j; !.x(lOqf
} %mh
K1,
} zFwp$K>{QY
private void fixUp(int k) { IO|">a6
while (k > 1) { 4,TS1H
int j = k >> 1; /GfC/)1_
if (queue[j]>queue[k]) K)F;^)KDHf
break; [;#}BlbN
SortUtil.swap(queue,j,k); _s<eqCBV
k = j; |=,V,*"
} v0\2%PC
} >qCUs3}C{*
=U3!D;XP
} k`kmmb>
"-(yZigQ
} ADlPdkmym
%w_h8
SortUtil: (g4.bbEm
D.U)R7(
package org.rut.util.algorithm; B9Y "J
JdFMSmZ@
import org.rut.util.algorithm.support.BubbleSort; u;;]S!:M
import org.rut.util.algorithm.support.HeapSort; ~Ui<y=d
import org.rut.util.algorithm.support.ImprovedMergeSort; g]z,*d
import org.rut.util.algorithm.support.ImprovedQuickSort; vU&gFEWg
import org.rut.util.algorithm.support.InsertSort; TfVB~"&