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。 l{Hi5x'H
插入排序: JPUDnPr
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package org.rut.util.algorithm.support; Vb 4Qt#o
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import org.rut.util.algorithm.SortUtil; L#u6_`XJ+
/** _jZDSz|Yb
* @author treeroot Q$,8yTM
* @since 2006-2-2 >CPkL_@VZ=
* @version 1.0 KX<RD|=
*/ jVRd[
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) LTtfOcrt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -r-`T
s
*/ m ]K.0E
public void sort(int[] data) { =10t3nA1$
int temp; q{7s.m
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x el&8 `
} ~.x!st}
} ]V@!kg(p8
} {=g-zsc]K
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} r 'jVF'w
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冒泡排序: l.BSZhO$
59^@K"J
package org.rut.util.algorithm.support; '*3+'>
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import org.rut.util.algorithm.SortUtil; t41cl
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/** *qb`wg
* @author treeroot Op%^dwVG(v
* @since 2006-2-2 u khI#:[
* @version 1.0 @/0aj
*/ 6xFZv
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public class BubbleSort implements SortUtil.Sort{ (tq)64XVz
9D#PO">|
/* (non-Javadoc) "4tRy9q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RycEM|51V
*/ 7OWiG,
public void sort(int[] data) { $e*Nr=/
int temp; >uuX<\cW
for(int i=0;i for(int j=data.length-1;j>i;j--){ C#-x 3d-{
if(data[j] SortUtil.swap(data,j,j-1); cE*|8'rSf
} QHs]~Ja
} 5h>
gz
} %?wuKZLnc
} ufR |
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} ^5T{x>Lj
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选择排序: C6P6 hJm
x9_ Lt4
package org.rut.util.algorithm.support; H7SqM D*y9
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import org.rut.util.algorithm.SortUtil; 95!xTf
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/** D\`$
* @author treeroot nlmkkTHF8
* @since 2006-2-2 I'@ }Yjm|
* @version 1.0 @s
IZ
*/ DSjo%Brd-
public class SelectionSort implements SortUtil.Sort { q$t& *O_
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/* }]s~L9_z['
* (non-Javadoc) *TXq/
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* R*[ACpxr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gR( c;
*/ KcU,RTE
public void sort(int[] data) { B\=&v8
int temp; cKfYkJ)A'
for (int i = 0; i < data.length; i++) { m|7g{vHVV
int lowIndex = i; ?B}>[
for (int j = data.length - 1; j > i; j--) { u51/B:+
if (data[j] < data[lowIndex]) { fzKKK+
lowIndex = j; YT:1=Nf}
} c"z%AzUV'
} Rp<Xu6r
SortUtil.swap(data,i,lowIndex); rb_G0/R
} ZE\t{s0
} v[|iuOU
9]YmP8
} cQ8:;-M
\ D[BRE+
Shell排序: vB
Jva8;Q
16+@#d%#p
package org.rut.util.algorithm.support; @KpzxcEoO
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import org.rut.util.algorithm.SortUtil; /.?\P#9)
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/** {0LdLRNZ
* @author treeroot aH$~':[93
* @since 2006-2-2 :qZ^<3+:
* @version 1.0 drZw#b
*/ @fK`l@K
public class ShellSort implements SortUtil.Sort{ 9BY b{<0tS
LH_ 2oJ\
/* (non-Javadoc) CeJ|z{F\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZRHTvxf
*/ hB.dqv]^
public void sort(int[] data) { j;y|Ys)I
for(int i=data.length/2;i>2;i/=2){ Ya. $x~
for(int j=0;j insertSort(data,j,i); u<8Q[_E&
} &qU[wn:1
} ~9c9@!RA2
insertSort(data,0,1); aj,ZM,Ad
} y,x~S\>+
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/** 3edAI&a5
* @param data QCo^#-
* @param j gvJJ.IX]+
* @param i gMvvDP!Wp
*/ pE<' '`
private void insertSort(int[] data, int start, int inc) { F,zJdJ
int temp; |<V{$),k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !+6l.`2WI
} ;E&XFTdO
} yR!>80$j
} :1=?/8h
L$xRn/\
} -Gpj^aBU
Dk-L4FS
快速排序: %FU[j^
?MYD}`Cv
package org.rut.util.algorithm.support; la4,Z
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import org.rut.util.algorithm.SortUtil; GEA;9TU|V
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/** _~kcr5
* @author treeroot i/~J0qQ
* @since 2006-2-2 ;x#>J +QlG
* @version 1.0 A-io-P7qyj
*/ NIfc/%
public class QuickSort implements SortUtil.Sort{ r Lh
h
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/* (non-Javadoc) _:L*{=N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K)?^b|D
*/ xD=D *W
public void sort(int[] data) { rYJ))@
quickSort(data,0,data.length-1); Kq$Zyf=E
} ie!4z34
private void quickSort(int[] data,int i,int j){ W!k6qTz)
int pivotIndex=(i+j)/2; }D^Gt)
file://swap .%rR
SortUtil.swap(data,pivotIndex,j); _D9=-^
Em,!=v(*
int k=partition(data,i-1,j,data[j]); j r[~
SortUtil.swap(data,k,j); .;2!c'mT9
if((k-i)>1) quickSort(data,i,k-1); IT(c'}
if((j-k)>1) quickSort(data,k+1,j); M\&~ Dmd
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} ~^S-
/** |DW'RopM
* @param data ]S L&x:/-
* @param i 76b7-Nj"
* @param j 1Tq$ E[
* @return &EPEpN
R
*/ v~\ 45eEA
private int partition(int[] data, int l, int r,int pivot) { dx}/#jMa
do{ IJ8DN@w9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :RsPGj6
SortUtil.swap(data,l,r); cPcV[6)5K9
} C=IH#E=
while(l SortUtil.swap(data,l,r); ?C:fP`j:
return l; kA4ei
} ~@D%qbN
6bcrPf}
} <.b$
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改进后的快速排序: \6 hL W_q1
Q/c
WV
package org.rut.util.algorithm.support; Lf#G?]@
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import org.rut.util.algorithm.SortUtil; aS vE
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/** !yX<v%>_0
* @author treeroot >U<nEnB$?
* @since 2006-2-2 yk<jlVF$j
* @version 1.0 N o(f0g.
*/ 2.D!4+&
public class ImprovedQuickSort implements SortUtil.Sort { /8}+#h)[
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private static int MAX_STACK_SIZE=4096; V(u2{4gZ
private static int THRESHOLD=10; C|\^uR0
/* (non-Javadoc) Y:%)cUxA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2\{uqv
*/ Db=>7@h3C
public void sort(int[] data) { S=,1}
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int[] stack=new int[MAX_STACK_SIZE]; J'yN' 0
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int top=-1; $`{q[ {
int pivot; Q!X_&ao)O
int pivotIndex,l,r; 51qIo 4$
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stack[++top]=0; uV_)JZW,L
stack[++top]=data.length-1; "g%:#'5
m->%8{L
while(top>0){ id+m[']+
int j=stack[top--]; #0g#W
int i=stack[top--]; 'c0'P%[5A
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pivotIndex=(i+j)/2; Y@H,Lk
pivot=data[pivotIndex]; I`W-RWZ
g[au-.:
SortUtil.swap(data,pivotIndex,j); >J3ja>Gw/
=9 M|o0aY
file://partition |Xm4(FN\
l=i-1; ;"Y;l=9_
r=j; hlFU"u_
do{ R}w wC[{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); d Zz^9:C+
SortUtil.swap(data,l,r); 9/daRq$
} hcd>A vC8
while(l SortUtil.swap(data,l,r); {O kik}Oh
SortUtil.swap(data,l,j); :Q
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5**5b9bj-9
if((l-i)>THRESHOLD){ d]ZC8<`w
stack[++top]=i; *{dD'9Bg
stack[++top]=l-1; d50IAa^p6J
} M.:@<S
if((j-l)>THRESHOLD){ `s83rhs`!
stack[++top]=l+1; d =(Yl r
stack[++top]=j; $^=jPk]+
} '%-xe3
;Nf hKu%K
} 7lDaok
file://new InsertSort().sort(data); )SL@>Cij
insertSort(data); _RaVnMJKX4
} tw4am.o1]
/** }'V'Y[
* @param data ,rFLpQl
*/ #~URLN
private void insertSort(int[] data) { ro&Y7m
int temp; M-Z6TL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $sc8)d\B
} y:|.m@
j1
} ?Y0$X>nm
} x|v[Dxf]
}8V;s-1
} H]i+o6
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归并排序: ^dUfTG9{
t66f 7AR
package org.rut.util.algorithm.support; oa&US_
m>uI\OY{n
import org.rut.util.algorithm.SortUtil; Tc3ih~LvG
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/** <S8I"8{Mb
* @author treeroot *M5$ h*;v
* @since 2006-2-2 2>MP:yY;K
* @version 1.0 Eo {1y
*/
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public class MergeSort implements SortUtil.Sort{ +<!)k?
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/* (non-Javadoc) 1!;"bHpk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s;_#7x#
*/ G{:af:5Fo
public void sort(int[] data) { UOLTCp?M;J
int[] temp=new int[data.length]; S0.- >"L
mergeSort(data,temp,0,data.length-1); 1RI #kti-"
} (ciGLfNG
K^,&ub.L)
private void mergeSort(int[] data,int[] temp,int l,int r){ cu479VzPx:
int mid=(l+r)/2; Ql#W
/x,e
if(l==r) return ; 1(:b{Bl
mergeSort(data,temp,l,mid); 3d#9Wyxs
mergeSort(data,temp,mid+1,r); U=c5zrs
for(int i=l;i<=r;i++){ ^b"x|8
temp=data; OP|.I._I
} vbWJhjK0h
int i1=l; o]|oAN9
int i2=mid+1; f
$.\o
for(int cur=l;cur<=r;cur++){ Gh$y#0qr
if(i1==mid+1) [L*[j.r7[
data[cur]=temp[i2++]; 3Y1TQ;i,wQ
else if(i2>r) c<+g|@A#
data[cur]=temp[i1++]; zfP[1
else if(temp[i1] data[cur]=temp[i1++]; P,$[|)[E
else PtRj9TT
data[cur]=temp[i2++]; 1%SJ1oY
} |~/3u/
} ^^4K/XBve
s]F?=yEp
} }"&n[/8~
f*|8n$%
改进后的归并排序: ubzb
OUlxeo/
package org.rut.util.algorithm.support; I*+LJy;j
P;L)1 g
import org.rut.util.algorithm.SortUtil; uHUvntr
j#LV7@H.e?
/** D y`W5_xSz
* @author treeroot vy{rwZ$
* @since 2006-2-2 x%IXwP0
* @version 1.0 5A2Y'ms,/
*/ q19k<BqR
public class ImprovedMergeSort implements SortUtil.Sort { jlRl2 #"
Qb6QXjN
Q
private static final int THRESHOLD = 10; (6ohrM>Q
vk4C_8m
/* 7GBZA=J
* (non-Javadoc) d5w_[=9U
* DqurHQ z)m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j{Yt70Wv
*/ YZ"+c&V"
public void sort(int[] data) { 8CP9DS
int[] temp=new int[data.length]; g)Vq5en*
mergeSort(data,temp,0,data.length-1); "%.|n|
} =RW*
%8C
IKMsY5i
private void mergeSort(int[] data, int[] temp, int l, int r) { QoW(tM
int i, j, k; KA|&Q<<{@
int mid = (l + r) / 2; 27Kc-rcB
if (l == r) zK'
_e&*
return; 3i]"#wK
if ((mid - l) >= THRESHOLD) dl*_ m3T
mergeSort(data, temp, l, mid); u|_LR5S!j
else kz7vbY
insertSort(data, l, mid - l + 1); 2cs?("8e%
if ((r - mid) > THRESHOLD) vKU]80T
mergeSort(data, temp, mid + 1, r); dp"<KcP_
else ]97Xu_
insertSort(data, mid + 1, r - mid); }"%!(rx
di]$dl|Wi
for (i = l; i <= mid; i++) { rt5oRf:wY
temp = data; ql{^"8x
} =R8f)UQYx
for (j = 1; j <= r - mid; j++) { (ZE%tbm2
temp[r - j + 1] = data[j + mid]; CbTf"pl
} Qag|nLoT
int a = temp[l]; ;x!,g5q"q
int b = temp[r]; Z-4K?;g'k
for (i = l, j = r, k = l; k <= r; k++) { X;s3y{ku
if (a < b) { t/v@vJ`vSH
data[k] = temp[i++]; nu4Pc
a = temp; otWo^CE$
} else { a^RZsR
data[k] = temp[j--]; U=haXx4N
b = temp[j]; cwH,l$
} th.M.jas
} g2[K<
} rtB|N-
!pd7@FwC
/** 0=N4O!X9
* @param data 3gxf~$)?
* @param l 7j@^+rkr3f
* @param i LFEp
*/ /`7 I K
private void insertSort(int[] data, int start, int len) { E0sbU<11
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4u3 \xR?w6
} 2^zg0!z
} ]h #WkcXQ
} GIl:3iB49
} Nbgp_:{
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堆排序: Y;fuh[#
Am2*-
package org.rut.util.algorithm.support; N+*(Y5TU
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import org.rut.util.algorithm.SortUtil; !d:tIu{)
I?f"<5[0
/** yQu vW$
* @author treeroot ~ GNyE*t/Y
* @since 2006-2-2 f2uZK!:m
* @version 1.0 UqD5
A~w
*/ B"~U<6s0
public class HeapSort implements SortUtil.Sort{ PLO\L W
"F&Tnhh4
/* (non-Javadoc) LTg?5GwD\j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ua9thOG
*/ kFS0i%Sr
public void sort(int[] data) { j FgZ}Xp
MaxHeap h=new MaxHeap(); 5/Ydv
RB67
h.init(data); aF D="Zh
for(int i=0;i h.remove(); 2;&mkcK'
System.arraycopy(h.queue,1,data,0,data.length); 613/K`o
} {]+ jL1
\V._Z>]
private static class MaxHeap{ 9 1BY]N
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void init(int[] data){ Z$Z`@&U=
this.queue=new int[data.length+1]; 2}D,df'W4
for(int i=0;i queue[++size]=data; ].LJt['%8
fixUp(size); CoKiQUW
} Us1@\|]
} !.9l4@z#
kJ/+IGV^v
private int size=0; A$/KP\0Y2
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private int[] queue; g* %bzfk=|
Y3D3.T6Q
public int get() { 1oB$MQoc
return queue[1]; |p;4dL
} fwRGT|":B
0rV/qMo;K
public void remove() { 2q+la|1Cr
SortUtil.swap(queue,1,size--); :RPVT,O}
fixDown(1); ZmNZS0j
} 4"LPJX)Q
file://fixdown pMOD\J:l,
private void fixDown(int k) { N[>:@h
int j; "_t4F4z
while ((j = k << 1) <= size) { X88F>1}
if (j < size %26amp;%26amp; queue[j] j++; /#29Y^Z)=
if (queue[k]>queue[j]) file://不用交换
wtlB
break; [70Y,,w
SortUtil.swap(queue,j,k); Mk<m6E$L
k = j; IT,"8s
} QDP-E[
} SzRL}}I
private void fixUp(int k) { 2%bhW,?I
while (k > 1) { S<*' ;{5~
int j = k >> 1; '=$TyiU
if (queue[j]>queue[k]) MdLj,1_T
break; R j-jAH
SortUtil.swap(queue,j,k); cnbo+U
k = j; HTw#U2A;+
} `Rrr>vj
} E`~i-kf
ma3Qi/
} #sL/y
0xv\D0
} Tu==49
@sN^BX`z
SortUtil: X!o@f$
bH_I7G&m
package org.rut.util.algorithm; .-J`d=Krp
8`a,D5U:
import org.rut.util.algorithm.support.BubbleSort; S3; lKr
import org.rut.util.algorithm.support.HeapSort; L+Eu
d
import org.rut.util.algorithm.support.ImprovedMergeSort; 9wzwY[{
import org.rut.util.algorithm.support.ImprovedQuickSort; ]Uu
aN8
import org.rut.util.algorithm.support.InsertSort; b"^\)|*4;
import org.rut.util.algorithm.support.MergeSort; r9<V%PHv
import org.rut.util.algorithm.support.QuickSort; fa"\=V2S
import org.rut.util.algorithm.support.SelectionSort; ZH% we
import org.rut.util.algorithm.support.ShellSort; v< Ty|(gd
K@HLIuz4t
/** Q
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* @author treeroot 2,+d|1(4o
* @since 2006-2-2 70{RDj6{
* @version 1.0 |l$
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*/ f]c<9Q>*
public class SortUtil { tO7I&LNE
public final static int INSERT = 1; bZu$0IG
public final static int BUBBLE = 2; $]Jf0_
public final static int SELECTION = 3; 5|5=Y/
public final static int SHELL = 4; aJa.U^1{
public final static int QUICK = 5; !f@XDW&R
public final static int IMPROVED_QUICK = 6; O
3G:0xF
public final static int MERGE = 7; WBa /IM
public final static int IMPROVED_MERGE = 8; ;>5,
public final static int HEAP = 9; ,|A{!j`
t]4!{~,
public static void sort(int[] data) { J, r Xx:
sort(data, IMPROVED_QUICK); 1}`2\3,
} rJX\6{V!_
private static String[] name={ 'bl%Y).9w
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lz-
iCZ
}; <M=';h^w2
GZ
<nXU>
private static Sort[] impl=new Sort[]{ W|0My0y
new InsertSort(), W5|j1He&
new BubbleSort(), )]3L/
new SelectionSort(), 0Lx3]"v
new ShellSort(), \d:h$
new QuickSort(), PF m\[2
new ImprovedQuickSort(), )}quw"H
new MergeSort(), ,2,W^HJ
new ImprovedMergeSort(), j|k@MfA
new HeapSort() RU7!U mf
}; i]dz}= j'
IEc>.J|T&
public static String toString(int algorithm){ 4aA9\\hfGY
return name[algorithm-1]; *N`;I@Q"[
} Wy8,<K{
1c/
X
public static void sort(int[] data, int algorithm) { K|Om5
p
impl[algorithm-1].sort(data); tR5tPPw
} K\~v&
Et.j1M|g
public static interface Sort { ~oo'ky*H!
public void sort(int[] data); J+lGh9G
} sSz%V[XWL
86y%=! bS
public static void swap(int[] data, int i, int j) { I'?6~Sn3
int temp = data; ldYeX+J
_
data = data[j]; {!MVc<G.
data[j] = temp; an. `dBm
} oCbpK
} B 2Qp}