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。 /Et:',D
插入排序: %zB
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X Jy]d/
package org.rut.util.algorithm.support; A:ef}OCL
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pp
import org.rut.util.algorithm.SortUtil; 7@Qz
/** z6R<*$4
* @author treeroot u U>Bun
* @since 2006-2-2 X(#G6KeZFZ
* @version 1.0 @$;"nVZ4v
*/ DP*[t8
public class InsertSort implements SortUtil.Sort{ 8\t~*@"
mY3x
(#I
/* (non-Javadoc) fN>o465I6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j4Cad
*/ H6*d#!
public void sort(int[] data) { C
sn"sf
int temp; i3>7R'q>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zl.}J,0F
} / '}O-h
} )fR'1_
} o% !a
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} x5 3aGi|
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冒泡排序: /'p(X~X:l
[HK[{M=v=
package org.rut.util.algorithm.support; (6fh[eK86
xq.,7#3
import org.rut.util.algorithm.SortUtil; l>S~)FNwXJ
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/** $q{-)=-BXQ
* @author treeroot Hc4]2pf
* @since 2006-2-2 cyG3le& +G
* @version 1.0 {v56k8uZ
*/ <`a!%_LC
[
public class BubbleSort implements SortUtil.Sort{ Bi)1*
}ruBbeQ
/* (non-Javadoc) Z@ *^4Ve
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B9n$8QS
*/ IiIF4 pQ,
public void sort(int[] data) { ~(%nnG6x
int temp; aDTNr/I
for(int i=0;i for(int j=data.length-1;j>i;j--){ {(AYs*5
if(data[j] SortUtil.swap(data,j,j-1); 'ac %]}`-
} WeE>4>^
} Y+syc dq
} c63DuHA*C
} F%t`dz!L
r+;op_
} kl_JJX6jPP
DnP>ed"M!
选择排序: a&p|>,WS
tD.md_E
package org.rut.util.algorithm.support; 5EIh5Y EU>
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import org.rut.util.algorithm.SortUtil; pog*}@OS
4WZ:zr N
/** 1pVagLlb:7
* @author treeroot _JiB=<Fkr
* @since 2006-2-2 'q8T*|/
* @version 1.0 uMtq4.
*/ $3|++?
public class SelectionSort implements SortUtil.Sort { :aR&t#<"E
N)03{$WM
/* $uF}GP_)
* (non-Javadoc) >Q#_<IcI
* lzN\~5a}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AF>J8 V
*/ fn(KmuNA
public void sort(int[] data) { |[;9$Vn
int temp; +HQX]t:Y
for (int i = 0; i < data.length; i++) { 6SIk?]u
int lowIndex = i; { ,qm=Xjq
for (int j = data.length - 1; j > i; j--) { n:,At]ky
if (data[j] < data[lowIndex]) { R~iJ5@[
lowIndex = j; x-,+skZs
} v{"$:Z
ow
} [84ss;.$
SortUtil.swap(data,i,lowIndex); MJd!J]E6
} UYn5Pix
} J1T_wA_
oQ1>*[e<u
} KyK%2:
K>Dn#"{Y
Shell排序: 9o"k
7$
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package org.rut.util.algorithm.support; +*]"Yo~]}
a.#`>
import org.rut.util.algorithm.SortUtil; 5fMVjd
4R0'$Ld4
/** F$y3oX
* @author treeroot $DeHo"mg7m
* @since 2006-2-2 8e:J{EG~
* @version 1.0 3,=97Si=
*/ F~2bCy[Z
public class ShellSort implements SortUtil.Sort{ *JDQaWzBd
z^j7wMQ
/* (non-Javadoc) _8Cw_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GuPxN}n
5
*/ c!vtQ<h-
public void sort(int[] data) { tAO,s ZW
for(int i=data.length/2;i>2;i/=2){ sygxV
for(int j=0;j insertSort(data,j,i); d
_)5Ks}
} DJvmwFx
} ]1hW/!
insertSort(data,0,1); "`qmeZ$rg
} uT:'Kkb!
:jlKj} 4A
/** 3oc p4x`[
* @param data E1 IT>_
* @param j Ybo:2e
* @param i 4u- mE
*/ #m=TK7*v
private void insertSort(int[] data, int start, int inc) { vVQwuV
int temp; \!M6-kmi
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r#r L~Rsd}
}
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} P0VXHE1p
} $`,10uw
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} 2o2jDQ|7
@6\Id7`Ea
快速排序: KT$Za
R8LJC]6Bh
package org.rut.util.algorithm.support; ovm109fTx
V>D8l @
import org.rut.util.algorithm.SortUtil; 4eH:eCZze
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/** P/i{_r
* @author treeroot hOZ:r =%
* @since 2006-2-2 O*0%AjT6
* @version 1.0 c\A
4-08
*/ \PReQ|[ah
public class QuickSort implements SortUtil.Sort{ {Tx"G9
U;
-2)+
/* (non-Javadoc) !\|_,pSB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LCBP9Rftvd
*/ U9"g;t+/
public void sort(int[] data) { FM$$0}X
quickSort(data,0,data.length-1); jN))|eD0x
} _L?MYkD
private void quickSort(int[] data,int i,int j){ (D2G.R\pr
int pivotIndex=(i+j)/2; S$#"bK/p^
file://swap t5O '7x
SortUtil.swap(data,pivotIndex,j); ?APzb4f^W
FZL"[3
int k=partition(data,i-1,j,data[j]); Gak@Z!|
SortUtil.swap(data,k,j); X83,fCCl5
if((k-i)>1) quickSort(data,i,k-1); O2x bHn4
if((j-k)>1) quickSort(data,k+1,j); 3dO~Na`S
4eVQO%&2
} [B~*88T
/** de7
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* @param data +4L]Z;k
* @param i #aI(fQZe
* @param j rhff8C//'
* @return xER-TT#S
*/ |"]#jx*8KC
private int partition(int[] data, int l, int r,int pivot) { {Kh^)oYdd
do{ Fnqj^5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z)tULnR8
SortUtil.swap(data,l,r); df\ ^uyD;
} ^^
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while(l SortUtil.swap(data,l,r); 2P35#QI[)
return l; |L9p. q
}
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L
jk(tw-B
} ?+)>JvWDz
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改进后的快速排序: :m]KVcF.
ql/K$#u
package org.rut.util.algorithm.support; )6U6~!k
q@i>)nC R
import org.rut.util.algorithm.SortUtil; >c`r&W.t
h2jrO9
/** M!i["($_
* @author treeroot M r-l
* @since 2006-2-2 *@;bWUJ
* @version 1.0 w{8O$4
w
*/ ,
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public class ImprovedQuickSort implements SortUtil.Sort { H0(.p'eN
E!A+J63zsw
private static int MAX_STACK_SIZE=4096; B,V:Qs6"
private static int THRESHOLD=10; pk8`suZ
/* (non-Javadoc) hZIbN9)8A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L;\f^v(
*/ ]ZR}Pm/CA
public void sort(int[] data) { dzk1 !yy
int[] stack=new int[MAX_STACK_SIZE]; /07iQcT(
mX2X.ww(4
int top=-1; jXPf}{^
int pivot; -,186ZVZ
int pivotIndex,l,r; 4 :phq
-M6#,Ji
stack[++top]=0; /+wCx#!
stack[++top]=data.length-1; 73j\!x
n +v(t
while(top>0){ |zbM$37?k
int j=stack[top--]; *j~ObE_y
int i=stack[top--]; ECsb?n7e
B#]:1:Qn
pivotIndex=(i+j)/2; we0haK
pivot=data[pivotIndex]; ke<l@wO
y_``-F&Z
SortUtil.swap(data,pivotIndex,j); @Os0A
I*z|_}$
file://partition 8\F|{vt#
l=i-1; ?
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r=j; `3eQ#, G!
do{ #.<Dq8u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -G[TlH06
SortUtil.swap(data,l,r); lT?Vt`==~M
} XE'3p6
while(l SortUtil.swap(data,l,r); (%j V[Q
SortUtil.swap(data,l,j); A(9$!%#+L
_RNP_$a
if((l-i)>THRESHOLD){ Py`7)S
stack[++top]=i; |Ed?s
stack[++top]=l-1; w1EB>!<;tj
} Zd|u>tn
if((j-l)>THRESHOLD){ E]Qd5l
stack[++top]=l+1; WN $KS"b6}
stack[++top]=j; V~_6t{L
} Alv"D
8UzF*gS
} Xz?7x0)Z
file://new InsertSort().sort(data); !q~f;&rg
insertSort(data); fh*7VuAc
} hzk4SOT(
/** xyP0haE
* @param data },=ORIB B:
*/ N(e>]ui
private void insertSort(int[] data) { a51}~V1
int temp; ~Qd|.T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); au E8 ^|
} ,V9r2QY
} .?5~zet#;
} bzaweAH
&lo<sbd.
} HHerL%/
hWiHKR]
归并排序: e<{waJ1
aA
-j
package org.rut.util.algorithm.support; KBoW(OP4'
vjVa),2
import org.rut.util.algorithm.SortUtil; 3!h 3flE
%(S!/(LWW
/** ]|N"jr?7H
* @author treeroot RA!8AS?
* @since 2006-2-2 WOeG3jMz?
* @version 1.0 l*Q OM
*/ V`0Y
p
public class MergeSort implements SortUtil.Sort{ iA|n\a~ny,
B~E>=85z
/* (non-Javadoc) Nx zAlu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 24po}nrO
*/ sDvy(5
public void sort(int[] data) { cJ>^@pd{
int[] temp=new int[data.length]; sC ?e%B
mergeSort(data,temp,0,data.length-1); sY[!=` @
} Ax 4R$P.]u
T-\q3X|y/
private void mergeSort(int[] data,int[] temp,int l,int r){ v+i==vxg
int mid=(l+r)/2; ?k=)T]-}
if(l==r) return ; YkQ=rurE
mergeSort(data,temp,l,mid); 9 ge'Mo
mergeSort(data,temp,mid+1,r); y#P_ }Kfo
for(int i=l;i<=r;i++){ J[UTn'M8]
temp=data; g2vt(Gf ;
} mC$ te
int i1=l; ?es9j]
int i2=mid+1; /VFQbJ+`
for(int cur=l;cur<=r;cur++){ |}: D_TX
if(i1==mid+1) [fJxbr"
data[cur]=temp[i2++]; +jN)$Y3Ya
else if(i2>r) Bnz}:te}
data[cur]=temp[i1++]; gF]IAZCi
else if(temp[i1] data[cur]=temp[i1++]; P@<K&S+f
else " ;o,D
data[cur]=temp[i2++]; @7sHFwtar?
} ,D.@6bJW
} 2h)*
.B!L+M< [
} 3!Mb<W.3
- v=ndJ.
改进后的归并排序: 1`1Jn*|TI
lrgvY>E0
package org.rut.util.algorithm.support; /GA-1cS_(
VoyRB2t
import org.rut.util.algorithm.SortUtil; AY]rQ:I
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/** ;`Sn66&
* @author treeroot (9)uZ-BF,
* @since 2006-2-2 [C3wjYi
* @version 1.0 U9Lo0K
*/ tbB.n
public class ImprovedMergeSort implements SortUtil.Sort { YCBUc<)
>qdRqy)DC
private static final int THRESHOLD = 10; +p-S36K~,7
yg%T{hyzH
/* (OG>=h8?
* (non-Javadoc) CelM~W$=u
* 5(DnE?}vo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rD>q/,X=\
*/ /b{Ufo3v
public void sort(int[] data) { i;67<f}-
int[] temp=new int[data.length]; =I$:-[(
mergeSort(data,temp,0,data.length-1); j2|UuWU
} Iy2AJ|d.
'fIG$tr9X
private void mergeSort(int[] data, int[] temp, int l, int r) { =/N0^
int i, j, k; =Q8$O
2TW
int mid = (l + r) / 2; YY$O"!."
if (l == r) ,*wj~NE
return; jG^OF5.
if ((mid - l) >= THRESHOLD) ra]\!;}L0
mergeSort(data, temp, l, mid); UQ2;Dg G%
else >kV=h?]Y
insertSort(data, l, mid - l + 1); H"rIOoxf
if ((r - mid) > THRESHOLD) Bs-MoT!
mergeSort(data, temp, mid + 1, r); w'Jo).OW~
else 6oGF6C
insertSort(data, mid + 1, r - mid); g1q%b%8T
rgu7g
for (i = l; i <= mid; i++) { =1j`VJU9
temp = data; jE$]Z(Ab
} HF%)ip+
for (j = 1; j <= r - mid; j++) { 'L6+B1Op
temp[r - j + 1] = data[j + mid]; PLWx'N-kqL
} &&n-$WEl
int a = temp[l]; M5B?`mTl
int b = temp[r]; lJ<(
mVt
for (i = l, j = r, k = l; k <= r; k++) { D]Gt=2\NG9
if (a < b) { MLn?t^v-
data[k] = temp[i++]; G]I^ zd&P
a = temp; m6
a@Y<
} else { Va\?"dH>M
data[k] = temp[j--]; LYS[qLpf
b = temp[j]; Q#I?nBin
} Y.o-e)zX
} ptpu
u=3"
} |R>I#NO5
h!1CsLd[
/** K/LoHWy+n*
* @param data jF%l\$)/
* @param l @xAfD{}f!
* @param i g8;JpP w
*/ V,
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private void insertSort(int[] data, int start, int len) { p:qj.ukw
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^ `Y1
} 9 Dx9alJR
} }!Xj{Eoc
} f@J-6uQ7w
} C9cQ}
j:
>l!DWi6
堆排序: %D*yXNsY
3Y=?~!,Jk
package org.rut.util.algorithm.support; rxAb]~MMp
n5 jzVv
import org.rut.util.algorithm.SortUtil; y:8Oc?
z,=k F I
/** .JL?RH2@8
* @author treeroot RLbxNn
* @since 2006-2-2 TWJ%? /d
* @version 1.0 ?1MaA
*/ v]BMET[w
public class HeapSort implements SortUtil.Sort{ )WazbT@
XDq*nA8#5B
/* (non-Javadoc) l050n9#9p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Z^HI
*/
9p<ZSh
public void sort(int[] data) { T=->~@5
MaxHeap h=new MaxHeap(); C9FQo7
h.init(data); 8Dy;'BtT
for(int i=0;i h.remove(); [?Q$b5j/M
System.arraycopy(h.queue,1,data,0,data.length); +0WI;M4i
} s:#\U!>0`
/CN`U7:E
private static class MaxHeap{ E:ocx2dp
E14Dq#L
void init(int[] data){ ~uz 4
this.queue=new int[data.length+1]; 2:l8RH!Y
for(int i=0;i queue[++size]=data; ?)B\0` %*'
fixUp(size); y2,M9
} {QTnVS't 0
} 4&([<gyR<
m339Y2%=
private int size=0; -V)DKf"f
-:o4|&g<*
private int[] queue; P ||:?3IH
Do5)ilt
public int get() { *R6Ed
return queue[1]; K0O&-v0"1
} lZ9rB^!
P>3
;M'KsO
public void remove() { /a!M6:,pX
SortUtil.swap(queue,1,size--); i>68gfx
fixDown(1); *
"Z5bKL
} [<M~6]
file://fixdown Q)s[ls
private void fixDown(int k) { ^p433
int j; ("B[P/
while ((j = k << 1) <= size) { WD7IF+v
if (j < size %26amp;%26amp; queue[j] j++; qx~-(|s`H
if (queue[k]>queue[j]) file://不用交换 >FabmIcC
break; K`?",G?_
SortUtil.swap(queue,j,k); Q-}yZ
k = j; Xn
1V1sr
} Q5H!
^RQm
} iFy_D
private void fixUp(int k) { /!mF,oR!
while (k > 1) { CQx#Xp>=s
int j = k >> 1; >3a<#s{%
if (queue[j]>queue[k]) (}u2) 9
break; ]l
WEdf+
SortUtil.swap(queue,j,k); _c4kj
k = j; af<R.
} 2\p8U#""
} 9zKrFqhNo
r2]KP(T8|
} ]%L?b-e
`i,l)X]
} * Jy'3o
ZYy?JDAO
SortUtil: |aovZ/b4
`'Af`u\R
package org.rut.util.algorithm; )E.!jL:g
w+NdEE4H9z
import org.rut.util.algorithm.support.BubbleSort; MM*B.y~TxZ
import org.rut.util.algorithm.support.HeapSort; .A. VOf_
import org.rut.util.algorithm.support.ImprovedMergeSort; "[rChso
import org.rut.util.algorithm.support.ImprovedQuickSort; Hq*\,`b&
import org.rut.util.algorithm.support.InsertSort; uwcm%N;I"
import org.rut.util.algorithm.support.MergeSort; #Jo#[-r
import org.rut.util.algorithm.support.QuickSort; uoM;p'
import org.rut.util.algorithm.support.SelectionSort; 8i=c|k,GL.
import org.rut.util.algorithm.support.ShellSort; >vP DF+ u
#~(VOcRI
/** ? %9-5"U[
* @author treeroot AUm"^-@x#>
* @since 2006-2-2 c05kHB$O
* @version 1.0 .BR2pf|R
*/ Ip0~
public class SortUtil { ?W*{%my
public final static int INSERT = 1; o&GS;{Rs
public final static int BUBBLE = 2; G'5p /:
public final static int SELECTION = 3; gxIGL-1M
public final static int SHELL = 4; :4f>S)m
public final static int QUICK = 5; GEdWpYKS-`
public final static int IMPROVED_QUICK = 6; \CP)$0j-&o
public final static int MERGE = 7; ok"v`76~f5
public final static int IMPROVED_MERGE = 8; G>/Gw90E
public final static int HEAP = 9; -.>b7ui
Nm.H
public static void sort(int[] data) { K\7\
sort(data, IMPROVED_QUICK); [<+A?M=
} 5v f?E"\r
private static String[] name={ fZqqU|tq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !y&uK&1
}; ,dTRM
3
?1qI'5
private static Sort[] impl=new Sort[]{ (}W+W\.
new InsertSort(), a5/6DK>
new BubbleSort(), b1(7<o
new SelectionSort(), 3 %ppvvQ
new ShellSort(), F3XB};
new QuickSort(), LyaFWx
new ImprovedQuickSort(), 1VlRdDg
new MergeSort(), 4$);x/
a
new ImprovedMergeSort(), 7hs1S|
new HeapSort() J|9kWjOf+i
}; X0\2q D
-bN;nSgb
public static String toString(int algorithm){ O T*C7=
return name[algorithm-1]; q`HuVilNH
} _.9):i2<SF
x}Y
public static void sort(int[] data, int algorithm) { -VqZw&"
impl[algorithm-1].sort(data); tai=2,'
} TN xl?5:
uANG_sX^n
public static interface Sort { jT~PwDSFt3
public void sort(int[] data); M.|cl#
} ,f4VV\
Q]9+-p(=
public static void swap(int[] data, int i, int j) { e7m>p\"
int temp = data; oNyVRH ZH
data = data[j]; 7,MDFO{n
data[j] = temp; [g bYIwL.
} 0zQ^ 6@
} ne]P -50