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。 #&+0hS
插入排序: R-Y |;
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package org.rut.util.algorithm.support; "*o54z5"
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import org.rut.util.algorithm.SortUtil; WB S~e
/** Vmj7`w&
* @author treeroot ;lqtw]4v
* @since 2006-2-2 cnm&oC 6
* @version 1.0 #NZ\UmA
*/ }kg?A oo
public class InsertSort implements SortUtil.Sort{ : `D[0
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/* (non-Javadoc) ]w!gv
/;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G([8Q8B4+
*/ r3X|*/
public void sort(int[] data) { J(*QtF
int temp; ]"SH
pq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -uZ bVd
} ?haN ;n6'
} fuM+{1}/E
} et|P5%G
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} j-2`yR
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冒泡排序: G)28#aH
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package org.rut.util.algorithm.support; tqLn A
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import org.rut.util.algorithm.SortUtil; x2B~1edf
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/** tjZ.p.IlG
* @author treeroot [9f
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* @since 2006-2-2 6x KbK1W
* @version 1.0 n`";ctQT
*/ ]_NN,m>z
public class BubbleSort implements SortUtil.Sort{ YH33E~f
@
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/* (non-Javadoc) t ZUZNKODW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1aKYxjYM
*/ ?vL\VI9
public void sort(int[] data) { P<b.;Oz__-
int temp; 7sECbbJT
for(int i=0;i for(int j=data.length-1;j>i;j--){ [.DSY[!8U
if(data[j] SortUtil.swap(data,j,j-1); ")|3ZB7>*
} xz#;F ,`ZR
} 65bLkR{0
} 0T 2h3,
} "?_adot5v
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} |K?fVL
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选择排序: 6U;pYWht
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package org.rut.util.algorithm.support; Izq]nR
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import org.rut.util.algorithm.SortUtil; a,o)i8G9R<
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/** V-a/%_D
* @author treeroot ]bO{001y,
* @since 2006-2-2 0gPz|v>z
* @version 1.0 q[{q3-W
*/ >nmby|XtW
public class SelectionSort implements SortUtil.Sort { uEQH6~\{Nl
8[(eV.
/*
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* (non-Javadoc) 6'W79
* 6N(Wv0b $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v :]y#y
*/
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public void sort(int[] data) { Et@= <g
int temp; PETrMu<
for (int i = 0; i < data.length; i++) { M= !Fb
int lowIndex = i; |RwpIe8~
for (int j = data.length - 1; j > i; j--) { 5sC{5LJzC
if (data[j] < data[lowIndex]) { +]H9:ARI
lowIndex = j; z<c^<hE:l
} [P)'LY6F
} #6'oor X
SortUtil.swap(data,i,lowIndex); <uNBsYMuC
} E&V"z^qs_
} I z~#G6]M
/s& xI
} RL |.y~
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Shell排序: Fh& `v0
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package org.rut.util.algorithm.support; XyJ*>;q
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import org.rut.util.algorithm.SortUtil; `;WiTE)&)
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/** CyO2Z
* @author treeroot EU]{S=T
* @since 2006-2-2 7{f&L'
* @version 1.0 &0SGAJlec
*/ M_+&XLnzsJ
public class ShellSort implements SortUtil.Sort{ 8#'<SB
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/* (non-Javadoc) s4P8PDhz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>>{}c!nf
*/ 1;3oGuHj8
public void sort(int[] data) { ~1wAk0G`n
for(int i=data.length/2;i>2;i/=2){ AuHOdiJ
for(int j=0;j insertSort(data,j,i); 7&XU]I
} [VIdw92
} {,.1KtrSN
insertSort(data,0,1); *D
#H-]9
} -(~Tu>KaH
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/** |xQG
* @param data znhe]&Fw
* @param j \lCr~D5
* @param i hJ.XG<?]$
*/ >WE3$Q>bi
private void insertSort(int[] data, int start, int inc) { h'^7xDw
int temp; X<\^*{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /:>qhRFJA:
} VE4!=4
} O^G/(
} 'Kxs>/y3
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} MHVqRYz
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快速排序: #!rng]p
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package org.rut.util.algorithm.support; %\\l/{`eW
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import org.rut.util.algorithm.SortUtil; f"xi7vJv!f
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/** ye KzI~
* @author treeroot Et(Q$/W
* @since 2006-2-2 "uN
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* @version 1.0 Z66akr
*/ =#^%; 6 6z
public class QuickSort implements SortUtil.Sort{ mj[PKEdkB
-Vn9YeH+
/* (non-Javadoc) %*e6@Hm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wd~aSz9
*/ _zI95
public void sort(int[] data) { e{:P!r
aM
quickSort(data,0,data.length-1); Wd_bDZQ
} N6cf`xye
private void quickSort(int[] data,int i,int j){ g)!B};AA
int pivotIndex=(i+j)/2; T.d+@ZV<#
file://swap =`xk|86f
SortUtil.swap(data,pivotIndex,j); Xlw&hKS
6LL/wemq
int k=partition(data,i-1,j,data[j]); 7S7gU\qOj
SortUtil.swap(data,k,j); M<r'j $g
if((k-i)>1) quickSort(data,i,k-1); ~1`.iA
if((j-k)>1) quickSort(data,k+1,j); <_uLf9ja
ED"@!M`1
} T_\HU*\
/** - 6;0 x
* @param data dD1`[%
* @param i mwZesSxB_
* @param j `i8osX[ &p
* @return nj!)\U
*/ r*N:-I~z
private int partition(int[] data, int l, int r,int pivot) { OwwH 45
do{ 'C1=(PE%`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PYkcGtVa_
SortUtil.swap(data,l,r); *SzP7]1m
} @%IZKYfc~
while(l SortUtil.swap(data,l,r); ^*`{W4e]
return l; R<Ojaj=V
} l\-1W2
e,={!P"f
} 0J_ AX
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改进后的快速排序: %:h)8e-;
>T%Jlj3ZG
package org.rut.util.algorithm.support; j?i Ur2
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import org.rut.util.algorithm.SortUtil; $)mq
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=
/** 6`]R)i]
* @author treeroot N6c']!aM@
* @since 2006-2-2 g^NdN46%
* @version 1.0 _U1~^ucV
*/ n&iWYECz
public class ImprovedQuickSort implements SortUtil.Sort { +uM1#-+h
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private static int MAX_STACK_SIZE=4096; 1.o-2:]E
private static int THRESHOLD=10; 4))u*c/,
/* (non-Javadoc) V`TXn[7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z_*]joL
*/ Un]`Gd]:
public void sort(int[] data) { gd_w;{WP
int[] stack=new int[MAX_STACK_SIZE]; Tg&{P{$
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int top=-1; | H2{%!
int pivot; 0Tp?ED_
int pivotIndex,l,r; /&$'v:VB
V-}d-Y
stack[++top]=0; zG[fPD
stack[++top]=data.length-1; aP!a?xq
X8ev uN
while(top>0){ [@";\C_I
int j=stack[top--]; Lbq"( b
int i=stack[top--]; kN`[Q$B
::dLOf8o
pivotIndex=(i+j)/2; ?#qA>:2,
pivot=data[pivotIndex]; E(4ti]'4
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SortUtil.swap(data,pivotIndex,j); fg8V6FS
Q# }} 1}Ja
file://partition 022YuqL<v
l=i-1; tRS^|??
r=j; `V w9j,G
do{ Vt5%A}.VQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @?aNvWeavH
SortUtil.swap(data,l,r); -]Z!_[MlDF
} fm;1Iu#
while(l SortUtil.swap(data,l,r); DOkEWqM!
SortUtil.swap(data,l,j); .Ap[C? mV
RoxzCFsI\
if((l-i)>THRESHOLD){ B+jT|Y'
stack[++top]=i; XU2HWa
stack[++top]=l-1; gET& +M
} 6O"Vy
if((j-l)>THRESHOLD){ Wv77ef
stack[++top]=l+1; Xr:"8FT
stack[++top]=j; 56G5JSB=\
} ~"gOq"y5p
K>RL
} K
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file://new InsertSort().sort(data); 2N5N^S
insertSort(data); q
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} j6/ 3p|E
/** <9"s&G@
* @param data E-X-LR{CC
*/ oFoG+H"&7\
private void insertSort(int[] data) { 3dcZ1Yrn
int temp; 3 V8SKBS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A!Ng@r
} *W(b = u
} 7vNS@[8
} S^I38gJd
To}L%)
} t82Bp[t
%T}{rU~X
归并排序: d;D^<-[i
#@2 `^1
package org.rut.util.algorithm.support; Vn];vN
{
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import org.rut.util.algorithm.SortUtil; hYi-F.Qtq
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/** x[WT)
* @author treeroot @a%,0Wn
* @since 2006-2-2 5w}xjOYIjV
* @version 1.0 * fSa8CV
*/ nqgfAQsE)
public class MergeSort implements SortUtil.Sort{ 4z#CkT
$T;3*D 90
/* (non-Javadoc) 0<nKB}9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y)BKRS~
*/ vFl|
public void sort(int[] data) { h=`rZC
int[] temp=new int[data.length]; <u->hT
mergeSort(data,temp,0,data.length-1); MAJvjgd..
} ]Y;$~qQ
oJ6
d:
private void mergeSort(int[] data,int[] temp,int l,int r){ A<>W^ow
int mid=(l+r)/2; &+&^Hc
if(l==r) return ; 6TfXz2D'J
mergeSort(data,temp,l,mid); KgAc0pz{7H
mergeSort(data,temp,mid+1,r); Plm3vk=
for(int i=l;i<=r;i++){ (O?z6g
temp=data; ^$?8!WE
} tG%R_$*
int i1=l; yv$MQ~]
int i2=mid+1; P-+ ^YN,
for(int cur=l;cur<=r;cur++){ f fE%{B?
if(i1==mid+1) M{~eI
data[cur]=temp[i2++]; m#8}!u&
else if(i2>r) Z>CFH9
data[cur]=temp[i1++]; qIb(uF@l"
else if(temp[i1] data[cur]=temp[i1++]; /JveN8L%
else ORfA]I-u
data[cur]=temp[i2++]; D+ jk0*bJ
} &1w,;45
} Dtr'X@U
SxOM@A
} U(J?Q
#jDO?Y Sa
改进后的归并排序: ?.4.Ubc\
\>YXPMIk
package org.rut.util.algorithm.support; Ef?_d]
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import org.rut.util.algorithm.SortUtil; \OY2|
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/** JVXBm]
* @author treeroot .(`u'G=
* @since 2006-2-2 :;7q up
* @version 1.0 &JF^a
*/ sZB$+~.:}
public class ImprovedMergeSort implements SortUtil.Sort { g$]9xn#_[
%/sf#8^m
private static final int THRESHOLD = 10; V}aXS;(r%
TF{
xFb)
/* xNm<` Y?
* (non-Javadoc) C w$y
* y<#y3M!\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7J')o^MG
*/ ^l iyWl
public void sort(int[] data) { b,{?+8
int[] temp=new int[data.length]; )IhI~,0Nmj
mergeSort(data,temp,0,data.length-1); 8E$KR:/:4
} {v2Q7ZO-
U` bvv'38#
private void mergeSort(int[] data, int[] temp, int l, int r) { a{H~>d<?
int i, j, k; ]54V9l:
int mid = (l + r) / 2; e`C'5`d]
if (l == r) -M(:z
return; -5E%f|U
if ((mid - l) >= THRESHOLD) ;=_KLG <
mergeSort(data, temp, l, mid); .Mm8\].
else .@xwl}o$OL
insertSort(data, l, mid - l + 1); dIK!xOStA
if ((r - mid) > THRESHOLD) lRentNg0b
mergeSort(data, temp, mid + 1, r); T>L6 X:d
else 1_yUv7uhX
insertSort(data, mid + 1, r - mid); *S<>_R 8
R%b,RH#
for (i = l; i <= mid; i++) { .|_+>){$w
temp = data; ]Nm_<%lT
} g*!2.P
for (j = 1; j <= r - mid; j++) { UT>\u
temp[r - j + 1] = data[j + mid]; >.zk-`>-
} ~ZL}j+L/
int a = temp[l]; T!J\Dm-
int b = temp[r]; rTK/WZs8
for (i = l, j = r, k = l; k <= r; k++) { N?R1;|Z]
if (a < b) { h-#Glse<
data[k] = temp[i++]; jJg
'Y:K9q
a = temp; 2uU~$7~N
} else { >#xpg&2x
data[k] = temp[j--]; 4qiG>^h9
b = temp[j]; f{ENSUtCrR
} ~6{;3"^<
} QT?fp
>'
} N}zQ)]xz+r
qhiQ!fMQ
/** Ugrcy7
* @param data +&Sf$t 1
* @param l ?JtFiw
* @param i H|Q)Tp Lk
*/ UB(Q &U_
private void insertSort(int[] data, int start, int len) { =yvyd0|35
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "(T@*"vX2
} IO|">a6
} @S<=Okrlj
} \
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} |=,V,*"
+KXg&A/^
堆排序: ZZ?=^g
jjEkz 5
package org.rut.util.algorithm.support; s+o/:rrxY
P\N$TYeH
import org.rut.util.algorithm.SortUtil; RLecKw&1{3
T%?<3/Ev!
/** 9cX
~
* @author treeroot [2.pZB
* @since 2006-2-2 d%5QEVV
* @version 1.0 C6:<.`iD87
*/ sf7'8+wj>
public class HeapSort implements SortUtil.Sort{ j<wWPv
om9fg66
/* (non-Javadoc) Z!7#"wO9+V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j`ggg]"&$
*/ }3 RqaIY}
public void sort(int[] data) { ES}@mO
MaxHeap h=new MaxHeap(); IHMZE42
h.init(data); z(K[i?&
for(int i=0;i h.remove(); rh?!f(_@
System.arraycopy(h.queue,1,data,0,data.length); \oLRNr[F
} ub0]nov
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private static class MaxHeap{ TZ ?va@2
N-4LdC
void init(int[] data){
lrU}_`
this.queue=new int[data.length+1]; VQ{}S $jQ
for(int i=0;i queue[++size]=data; )9{?C4NQ
fixUp(size); s>76?Q:i
}
&tkkn2t
} i~ PN(h
xaAJ>0IM
private int size=0; rhHX0+
a
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private int[] queue; tB8XnO_c
!2>gC"$nv
public int get() { .~4%TsBaY
return queue[1];
9 k)?-
} <RKh%4#~
,a~-
(@
public void remove() { p&_Kb\}U
SortUtil.swap(queue,1,size--); 2_
<
fixDown(1); /E@LnKe
} My&h{Qk
file://fixdown tE/j3
private void fixDown(int k) { M#IGq
int j; 6~ev5SD;f
while ((j = k << 1) <= size) { Xd!=1::
if (j < size %26amp;%26amp; queue[j] j++; #(?EL@5
if (queue[k]>queue[j]) file://不用交换 *+vS
f7
break; hS OAjS
SortUtil.swap(queue,j,k); (B.J8`h }
k = j; {()8 Wr
} wBTnI>l9[
} J'sVT{@GS
private void fixUp(int k) { wv #1s3
while (k > 1) { 5Y"JRWC
int j = k >> 1; Ie`kzssM
if (queue[j]>queue[k]) AA:Ch?
break; =1!wep"
SortUtil.swap(queue,j,k); ?dVF@
k = j; }b~;x6
} Wo<zvut8
} -\:pbR
m,K0BL
} m
jC6(?V
`r
&IA
} S^HuQe!#
Q+*o-
SortUtil: ]O3[Te
2VyLt=mdh
package org.rut.util.algorithm; MR=>DcR
eNY$N_P
import org.rut.util.algorithm.support.BubbleSort; }rz}>((ZHF
import org.rut.util.algorithm.support.HeapSort; c!AGKc
import org.rut.util.algorithm.support.ImprovedMergeSort; /m%i"kki
import org.rut.util.algorithm.support.ImprovedQuickSort; -)(HG)3
import org.rut.util.algorithm.support.InsertSort; {x40W0
import org.rut.util.algorithm.support.MergeSort; *`YR-+0
import org.rut.util.algorithm.support.QuickSort; h`F8GNx(
import org.rut.util.algorithm.support.SelectionSort; &ok2Xw
import org.rut.util.algorithm.support.ShellSort; !U>711$
dWwh?{n
/** V)V\M6
* @author treeroot ?ntyF-n&
* @since 2006-2-2 )=V0
* @version 1.0 @jAuSBy
*/ i{?uIb B
public class SortUtil { ^P
>; %
public final static int INSERT = 1; Ho9 a#9
public final static int BUBBLE = 2; 23BzD^2a
public final static int SELECTION = 3; RR>Q$K
public final static int SHELL = 4; Q9=X|
public final static int QUICK = 5; U@x5cw:
public final static int IMPROVED_QUICK = 6; C
vfm ,BL
public final static int MERGE = 7; M^DYzJ
public final static int IMPROVED_MERGE = 8; Q"n|<!DN
public final static int HEAP = 9; p@!{Sh
z)I.^
public static void sort(int[] data) { gF+Uj( d
sort(data, IMPROVED_QUICK); &$ZJfHD@
} %GQPiWu
private static String[] name={ RI9&KS
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eS{lr4-]
}; (9$z+Zmm?
&[ejxK"
private static Sort[] impl=new Sort[]{ Sa7bl~p\
new InsertSort(), *J,VvO9
new BubbleSort(), EUevR/S
new SelectionSort(), wGD*25M7$
new ShellSort(), XgE\q
new QuickSort(), 4/e|N#1`;[
new ImprovedQuickSort(), U[1Rw6
new MergeSort(), 77?/e^K\S
new ImprovedMergeSort(), X<{kf-GP
new HeapSort() aGY R:jR$
}; da<B6!
2ZW
{
public static String toString(int algorithm){ ,Axk\7-
return name[algorithm-1]; |Xz-rgkQ
} ?Co)7}N
P]w5`aBM
public static void sort(int[] data, int algorithm) { xe9E</M_
impl[algorithm-1].sort(data); x{y}pH "H
} KCEBJ{jM
eU/o I} A
public static interface Sort { h$]=z\=
public void sort(int[] data); ?Vg251-H
} KU:RS+,e;
62BT 3/~
public static void swap(int[] data, int i, int j) { ?}p~8{ '
int temp = data; R]L$Ld< ij
data = data[j]; W%Jw\ z=
data[j] = temp; %%d3M->C}
} vl1`s
^}R
} cP8g.+