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。 K-0=#6?y4
插入排序: iW5cEI%tb
mmTpF]t
?`
package org.rut.util.algorithm.support; 7Sx|n}a-3
z'YWomfZm
import org.rut.util.algorithm.SortUtil; ,;$OaJFT
/** p
F-Lz<V
* @author treeroot 1q6)R/P
* @since 2006-2-2 vK',!1]y
* @version 1.0 H;/do-W[
*/ Mog>W&U
public class InsertSort implements SortUtil.Sort{ [,o:nry'a
,Z
q:na
/* (non-Javadoc) R}nvSerVb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0*gvHVd/l
*/ r9[S%Def
public void sort(int[] data) { azP H~'E'
int temp; lsz3'!%Y)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rx-\B$G
} fN&,.UB^p
} Bs "D<r&ro
} m2PUU/8B/
$*#a;w7\C
} %HUex
6!
aAg Qv*
冒泡排序: fAsb:P
U,Z\)+-R
package org.rut.util.algorithm.support; (RddR{mX
lvW
T
import org.rut.util.algorithm.SortUtil; &jE\D^>ko
I!lDKS,b
/** Cv**iW
* @author treeroot )~
(*q
* @since 2006-2-2 _@DOH2lXJ
* @version 1.0 Bqf(6\)F
*/ w*F[[*j@.
public class BubbleSort implements SortUtil.Sort{ C[J9 =!t
-D`1z?zHra
/* (non-Javadoc) qSY\a\.<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /<rvaR
*/ J"`VA_[
public void sort(int[] data) { EF0v!XW
int temp; giakEPl
for(int i=0;i for(int j=data.length-1;j>i;j--){ YYWD\Y`8
if(data[j] SortUtil.swap(data,j,j-1); > mb}~wx`
} F&d!fEHU
} @8L5UT
} M\]lNQ A
} Y%KowgP\
`"5Ub,~
} ;UQGi}?CD
%_(vSpk
选择排序: B)0/kY7c
N!+=5!
package org.rut.util.algorithm.support; p<5]QV7st
\<7Bx[/D4
import org.rut.util.algorithm.SortUtil; /Hr|u
B2;P%B
/** `16'qc
* @author treeroot 1&w%TRC2x
* @since 2006-2-2 E'08'8y
* @version 1.0 )U&9d
*/ 67j kU!
public class SelectionSort implements SortUtil.Sort { j~q 7v
`":
y=Y k$:-y
/* Zxebv#4
* (non-Javadoc) :?M_U;;z2+
* DQG%`-J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GcV/_Y
*/ btW#ebm
public void sort(int[] data) { PmuG(qg
int temp; 20c5U%
for (int i = 0; i < data.length; i++) { \s=r[0tj!
int lowIndex = i; &jDN6n3z
for (int j = data.length - 1; j > i; j--) { zL"e .
if (data[j] < data[lowIndex]) { <.h7xZ
lowIndex = j; WVP?Ie8
} "N+4TfXy
} s)-An(Uw
SortUtil.swap(data,i,lowIndex); 7-744wV}Z
} (\6E.Z#
} K9N31'
_^iY;&
} *!QmYH5r0
Ip
t;NlR
Shell排序: 1eI*.pt
@Jd&[T27Lr
package org.rut.util.algorithm.support; )!8qJQD
'2lV(>"
import org.rut.util.algorithm.SortUtil; pDS[ecx
2yfU]`qN
/** lNX*s
E
.
* @author treeroot MJ}{Q1|*
* @since 2006-2-2 FLmD?nw
* @version 1.0 J!C \R5\
*/ FB6Lz5:Vf
public class ShellSort implements SortUtil.Sort{ <*5S7)]BP
wB)y@w4k
/* (non-Javadoc) ;[y( 14g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gj^)T_E_
*/ F_@B ` ,
public void sort(int[] data) { e{x>u(
for(int i=data.length/2;i>2;i/=2){ b|i4me@
for(int j=0;j insertSort(data,j,i); ~XR('}5D
} |lNp0b
} 72l:[5ccR
insertSort(data,0,1); Ag8/%a~(
} Xu-~j!
aO{@.
/** j@xIa-{*
* @param data bxa>:71
* @param j :<g0Ho?e
* @param i _7!ZnJrR
*/ "51/,D
private void insertSort(int[] data, int start, int inc) { 6ALjM-t=V
int temp; B-
@bU@H
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ag'hHFV
} @`[e1KQ
} k$$SbStD
} L?ZSfm2<
kFjv'[Y1N
} dA<%4_WZty
}83
8F&
快速排序: .$\-{)
ip?]&5s
package org.rut.util.algorithm.support; qJG;`Ugl:
d(^8#4
import org.rut.util.algorithm.SortUtil; Bz'.7"
":0
0moA mfc
/** :Wbp|:N0
* @author treeroot k|OM?\
* @since 2006-2-2 SPqJ
[F
* @version 1.0 uO4
LD}A
*/ 3eY>LWx
public class QuickSort implements SortUtil.Sort{ 'xS@cFo(
|X@s {?
/* (non-Javadoc) vA6`};|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Z*rY?v
*/ ;!f='QuA
public void sort(int[] data) { |uy@v6
quickSort(data,0,data.length-1); n
n F
} 6%V:Z
private void quickSort(int[] data,int i,int j){ 0(i3RPIj\
int pivotIndex=(i+j)/2; 1gK|n
file://swap )M;~j
SortUtil.swap(data,pivotIndex,j); 0er|QC
p@pb[Bx~[
int k=partition(data,i-1,j,data[j]); +pYgh8w@
SortUtil.swap(data,k,j); w10~IP
if((k-i)>1) quickSort(data,i,k-1); |47t+[b
if((j-k)>1) quickSort(data,k+1,j); ^p(aZj3k
QtfL'su:
} [pU(z'caS
/** -W!M:8
* @param data
KTYjC\\G
* @param i L9) gN.#
* @param j y],opG6
* @return "6C
a{n1hk
*/ q:kGJxfaW
private int partition(int[] data, int l, int r,int pivot) { 5&%M L
do{ d5-Q}D,P
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PxYK)n9&
SortUtil.swap(data,l,r); h GA2.{
} G^{~'TZv%
while(l SortUtil.swap(data,l,r); T[4xt,[a
return l; (A=PDjP!
} EY]H*WJJ
*
1}dk`-
} =x+1A)Q
YC;@ ^
改进后的快速排序: \JPMGcL
a=$ZM4Bn
package org.rut.util.algorithm.support; xDeM7L'
aNry> 2:
import org.rut.util.algorithm.SortUtil; -`8@
}Rz,}^B
/** G9XkimQ'
* @author treeroot !{*yWpZ:
* @since 2006-2-2 8^EWD3N`
* @version 1.0 i'<hT
q4
*/ qJF'KHyU{l
public class ImprovedQuickSort implements SortUtil.Sort { wdj?T`4
<e#v9=}DI
private static int MAX_STACK_SIZE=4096; Q@}SR%p
private static int THRESHOLD=10; )xf(4
/* (non-Javadoc) %UdE2 D'bC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x#E
M)Thq
*/ ;|K
}
public void sort(int[] data) { i;pg9Vw
int[] stack=new int[MAX_STACK_SIZE]; p p0356
I]n X6=j5
int top=-1; a;dWM(;Kw
int pivot; Yt*NIwWr
int pivotIndex,l,r; .@x.
bq5ySy{8
stack[++top]=0; (~Bm\ Jn
stack[++top]=data.length-1; E
uO:}[
CnuM=S:
while(top>0){ M#Z^8(
int j=stack[top--]; E
1`g8Hk'
int i=stack[top--]; KT<i%)t2
!.%*Tp#k#
pivotIndex=(i+j)/2; K"[jrvZ=
pivot=data[pivotIndex]; Y->sJm
)0I-N)
SortUtil.swap(data,pivotIndex,j); +|;Ri68
=P,mix|
file://partition q2|x$5
l=i-1; c61 1&
r=j; xuHP4$<h3
do{ >"UXY)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b&A/S$*
SortUtil.swap(data,l,r); wx-&(f
} }+lK'6
while(l SortUtil.swap(data,l,r); \_u{ EB'b
SortUtil.swap(data,l,j); hQ>$"0K
B t3++ Mj
if((l-i)>THRESHOLD){ k6DJ(.n'%a
stack[++top]=i; IM6n\EZ^
stack[++top]=l-1; f4\F:YT
} 1c/<2 xO~
if((j-l)>THRESHOLD){ i.^UkN{
stack[++top]=l+1; wY8Vc"
stack[++top]=j; GZ<@#~1%\
} p-"wY?q
>9XG+f66E
} C%z9Q
file://new InsertSort().sort(data); _s-X5xU
insertSort(data); Y,mo}X<>
} .z$UNB(!M
/** p\I3 fI0i
* @param data U(+QrC:
*/ _\+0e:Ae
private void insertSort(int[] data) { ?mV2|;
int temp; W;yg{y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =}%:4
} lpd~U 2&
} *kf%?T.
} wmK;0 )|H
}x{1{Bw>Y
} (j:[<U
P\[K)N/ 1
归并排序: I|bX;l
Gn6\n'r0
package org.rut.util.algorithm.support; 41B.ZE+*qd
VwBw!,%Ab
import org.rut.util.algorithm.SortUtil; 7^)yo#i4
[$$R>ELYQ
/** ;E{@)X..|
* @author treeroot 'M?pg$ta_V
* @since 2006-2-2 U4a8z<l$
* @version 1.0 FME,W&_d
*/ L#D)[v"
public class MergeSort implements SortUtil.Sort{ =.J>'9 Q
WSF$xC/~
/* (non-Javadoc) <b4}
B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7"eIZ
*/ kSJ;kz,_
public void sort(int[] data) { rWJRoGk/
int[] temp=new int[data.length]; nRHlHu
mergeSort(data,temp,0,data.length-1); &f A1kG%
} lZ"C~B}9:I
'&|%^9O/"
private void mergeSort(int[] data,int[] temp,int l,int r){ $^e_4]k
int mid=(l+r)/2; p&xj7qwp@F
if(l==r) return ; SRHD"r^@
mergeSort(data,temp,l,mid); f/kYm\Zc
mergeSort(data,temp,mid+1,r); #~rQ\A!4
for(int i=l;i<=r;i++){ ,o
`tRh<
temp=data; ,
P1m#
} fP;I{AiN~
int i1=l; 0ly6 |:
int i2=mid+1; gpbdK?
for(int cur=l;cur<=r;cur++){ MD0d
if(i1==mid+1) FAGi`X<L
data[cur]=temp[i2++]; &"1 _n]JO
else if(i2>r) ls "Z4v(L6
data[cur]=temp[i1++]; iF:NDqc
else if(temp[i1] data[cur]=temp[i1++]; frQ=BV5%6
else EN>a^B+!
data[cur]=temp[i2++]; -G1R><8[
} Uu`}| &@i
} !}eq~3
M.$=tuUL
} o9{1_7K
s}^W2
改进后的归并排序: |c$*Fa"A
#5{lOeN
package org.rut.util.algorithm.support; Q\^BOdX^`
tnXW7ej ^
import org.rut.util.algorithm.SortUtil; wqE2n
=xH>,-8}
/** zyK11
* @author treeroot tQMz1$
* @since 2006-2-2 A,#z_2~
* @version 1.0 dDYor-g>
*/ sWq}/!@&
public class ImprovedMergeSort implements SortUtil.Sort { -|czhO)R
3=Xvl 58k
private static final int THRESHOLD = 10; xnZ
;$r!eFY;
/* Nw1 .x
* (non-Javadoc) U|+`Eth8(
* ccW{88II7w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #\}xyPS
*/ p2GN93,u@P
public void sort(int[] data) { q~\[P4m
int[] temp=new int[data.length]; p|r>tBv?x
mergeSort(data,temp,0,data.length-1); qm=9!jqC;
} )qWO}]F
4tt=u]:
private void mergeSort(int[] data, int[] temp, int l, int r) { 4
$)}d
int i, j, k; 1x0)mt3
int mid = (l + r) / 2; &3 ~R-$P
if (l == r) TU2MG VYy
return; Pi[(xD8
if ((mid - l) >= THRESHOLD) ~c=*Y=)LG
mergeSort(data, temp, l, mid); bOlb
else XOZ@ek)LY
insertSort(data, l, mid - l + 1); \7(OFT\u:
if ((r - mid) > THRESHOLD) tgrZs8?
mergeSort(data, temp, mid + 1, r); !6+V
else /jU4mPb;\D
insertSort(data, mid + 1, r - mid); - :x6X$=
Pv$O=N6-
for (i = l; i <= mid; i++) { ;4vx+> -
temp = data; ?l
0WuU
} Nu; 9
for (j = 1; j <= r - mid; j++) { Z3 na .>Z
temp[r - j + 1] = data[j + mid]; erV&N,cI
} aXD|XE%
int a = temp[l]; fqm6Pd{:(
int b = temp[r]; `7
J4h9K
for (i = l, j = r, k = l; k <= r; k++) { I"jub
kI=Z
if (a < b) { WODgG@w
data[k] = temp[i++]; VBu6,6
a = temp; 0mT.J~}1v
} else { qUNXT
data[k] = temp[j--]; p#dYNed]'
b = temp[j]; 04E#d.o'
} e0o)Jo.P
} O FlY"OS[
}
&Mh]s\
2CPh'7|l
/** _4t
* @param data k'd=|U;(FV
* @param l T!H }^v
* @param i 4V5h1/JPm
*/ Nu%MXu+
private void insertSort(int[] data, int start, int len) { 5lm>~J!/^
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qP[jtRIN
} L8KMMYh[
} ){i
9,u")
} u+]8Sq
} s !HOrhV
L q;=UE
堆排序: DIc -"5~
Czd)AVK
package org.rut.util.algorithm.support; ^pvnUODW[
^{+_PWn
import org.rut.util.algorithm.SortUtil; ?w "zW6U
Mg{=(No
/** }$'T=ay&
* @author treeroot h\OMWJ~
* @since 2006-2-2 @w[HXb
* @version 1.0 bjs{_?
*/ V)Y#m/$`
public class HeapSort implements SortUtil.Sort{ )m(?U
R-Z)0S'ZR
/* (non-Javadoc) $)M5@KT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7brC@+ZD
*/ RZ:=';
public void sort(int[] data) { P?YcZAJT*
MaxHeap h=new MaxHeap(); -xU4s
h.init(data); nTPq|=C
for(int i=0;i h.remove(); ywbdV-t/
System.arraycopy(h.queue,1,data,0,data.length); 5+iXOs<
} UJQGwTA W
;XGO@*V5T
private static class MaxHeap{ lyyRyFfQ
)Es|EPCx!
void init(int[] data){ sxU
0Fg
this.queue=new int[data.length+1]; XXPpj< c
for(int i=0;i queue[++size]=data; V3>JZH`
fixUp(size); 5*Y(%I<
} ,CQg6-[
} -|&&lxrwh
hxuc4C\J
private int size=0; :pgpE0
&qae+p?
private int[] queue; rIWQD%Afm
m3 W
public int get() { 5'[b:YC
return queue[1]; #qdfr3
} CR'1,
c\(CbC
public void remove() { &X
OFc.u
SortUtil.swap(queue,1,size--); {3*Zx"e![
fixDown(1); >du|DZq
} @
M
file://fixdown Y`!Zk$8
private void fixDown(int k) { 5TS&NefM
int j; W 33MYw
while ((j = k << 1) <= size) { #w#:f
if (j < size %26amp;%26amp; queue[j] j++; _tQR3I5
if (queue[k]>queue[j]) file://不用交换 ?=0BU}
break; WBY_%RTx
SortUtil.swap(queue,j,k); @PyZ u7'
k = j; BBlYy5x
} ^;a~_9
m-
} 2"!s8x1$
private void fixUp(int k) { K)F6TvWv
while (k > 1) { RD0=\!w *5
int j = k >> 1; 8(""ui8
if (queue[j]>queue[k]) pt=H?{06
break; ]}0QrD
SortUtil.swap(queue,j,k); 4S3uzy%
k = j; )V?:qCuY>
} N)^`
15w
} {E$smX
6k*,Yei
} Ni-@El99
g.T:72"
} swLrp
74
8XdgtYm
SortUtil: S!+}\*
eNX!EN(^
package org.rut.util.algorithm; x /E<@?*:
Av_JcH
import org.rut.util.algorithm.support.BubbleSort; g!DJW
import org.rut.util.algorithm.support.HeapSort; YzVhNJWpw
import org.rut.util.algorithm.support.ImprovedMergeSort; ![j?/376
import org.rut.util.algorithm.support.ImprovedQuickSort; IcP\#zhEv
import org.rut.util.algorithm.support.InsertSort; &*8_ w-
import org.rut.util.algorithm.support.MergeSort; 6#(==}Sm+
import org.rut.util.algorithm.support.QuickSort; 5l4YYwd>v
import org.rut.util.algorithm.support.SelectionSort; jPa"|9A
import org.rut.util.algorithm.support.ShellSort; V3<H8pL
CWw#0
/** b ]u01T-
* @author treeroot %+HZ4M+hV
* @since 2006-2-2 yU'<b.]
* @version 1.0 T?HW=v_a
*/ }YCpd )@
public class SortUtil { 0<#>LWaM_
public final static int INSERT = 1; GYwU3`{
public final static int BUBBLE = 2; jcL%_of
public final static int SELECTION = 3;
aK33bn'j
public final static int SHELL = 4; a(oa?OdJ
public final static int QUICK = 5; u4vyj#V
public final static int IMPROVED_QUICK = 6; uJ
T^=Y
public final static int MERGE = 7; T1#r>3c\
public final static int IMPROVED_MERGE = 8; :kQydCuK
public final static int HEAP = 9; Bvsxn5z+:
_T\cJcWf
public static void sort(int[] data) { lgQ"K(zY
sort(data, IMPROVED_QUICK); chA7R'+LA
} Xli$4 uL
private static String[] name={ a|eHo%Qt
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]+A%37
}; Wmc@:
(n
p(Ux]_s%
private static Sort[] impl=new Sort[]{ \45F;f_r6
new InsertSort(), zv0bE?W9
new BubbleSort(), 1s/548wu
new SelectionSort(), 6W[~@~D=
new ShellSort(), g0ks[ }f-
new QuickSort(), wl7 (|\-
new ImprovedQuickSort(), ApNS0
new MergeSort(), 3t9Weo)
new ImprovedMergeSort(), <\ EJ:
new HeapSort() !
G3Gr
}; YJu~iQ`i
{;vLM*
'
public static String toString(int algorithm){ 03H0(ku=
return name[algorithm-1]; y4)iL?!J~
} M>[e1y>7
z"P/Geb:O
public static void sort(int[] data, int algorithm) { `3yK<-
impl[algorithm-1].sort(data); Z@,[a
} d$hBgJe>N
%y_{?|+
public static interface Sort { TyhO+;
public void sort(int[] data); GRh430V[
} |p.|zH
H)+QkQb}
public static void swap(int[] data, int i, int j) { w)C5XX30;
int temp = data; S#:l17e3
data = data[j]; N@0cn
q:"
data[j] = temp; ny1;]_X_
} pZz\o
} [ylRq7^e