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。 @^P^-B
插入排序: +0'F@l
K~N$s"Qx
package org.rut.util.algorithm.support; Fx9-A8oIR
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import org.rut.util.algorithm.SortUtil; .%zcm
/** KdkA@>L!;
* @author treeroot l":W@R
* @since 2006-2-2 t|aV:x
* @version 1.0 NRi5 Vp2=
*/ [#PE'i4
public class InsertSort implements SortUtil.Sort{ szI7I$Qb
Dac)`/
/* (non-Javadoc) Zf'*pp T&q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
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*/ Lc*>sOm9
public void sort(int[] data) { J|`0GDSn
int temp; %6UF%dbYH`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d*gAL<M7E
} qJhsMo2IH
} b)LT[>f
} i0vm00oT
p/.8})c1r
} =>jp\A
LdPLC':}x|
冒泡排序: qt/K$'
T(b9b,ov)
package org.rut.util.algorithm.support; bSB%hFp=Cp
v pI9TG
import org.rut.util.algorithm.SortUtil; aurs~
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/** c8l>OS5i3_
* @author treeroot @~3--
* @since 2006-2-2 ,,H "?VO
* @version 1.0 p3Sh%=HE'
*/ 34@ [ZKJ5
public class BubbleSort implements SortUtil.Sort{ T$4{fhV
\
XzUGlrp:Y#
/* (non-Javadoc) z/@_?01T=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Zv``t61
*/ U7r8FL l
public void sort(int[] data) { uO?+vYAN
int temp; o/5-T4
for(int i=0;i for(int j=data.length-1;j>i;j--){ |Splbsk
if(data[j] SortUtil.swap(data,j,j-1); J2UQq 7-y
} SQKhht`M
} ^Q6J$"Tj
} \Wbmmd}8
} TT$Ao
+>$]leqa
} p>6`jr
;nY#/%f
选择排序: h^M_yz-f
YOCEEh?
package org.rut.util.algorithm.support; )vp0X\3q`
/ f%mYL
import org.rut.util.algorithm.SortUtil; %y1!'R:ZW
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/** $TQhr#C]
* @author treeroot e8m,q~%#/
* @since 2006-2-2 8{ zX=
* @version 1.0 Fn4v/)*H
*/ f:c'j`
public class SelectionSort implements SortUtil.Sort { @Nu2
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Q$jEmmm%V[
/* +7Ws`qhEe
* (non-Javadoc) ^^y eC|~N:
* bJ^JK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >lI7]hbIs
*/ lj4Fg*/Yn
public void sort(int[] data) { Zt=|q$"
int temp; g=*jKSZ
for (int i = 0; i < data.length; i++) { 7|rH9Bc{U
int lowIndex = i; Zk3Pv0c
for (int j = data.length - 1; j > i; j--) { FpoHm%+
if (data[j] < data[lowIndex]) { ^t>mdxuq
lowIndex = j; lu8G$EQI
} TP }a9-9?
} la!]Y-s)'4
SortUtil.swap(data,i,lowIndex); Y.:R-|W
} .l}Ap7@
} dcz?5O_{,
q
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} ]
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Shell排序: M`MxdwR
uuzV,q
package org.rut.util.algorithm.support; ,75)
tUn>=>cWP
import org.rut.util.algorithm.SortUtil; |tXA$}"L8
bIQ,=EA1
/** GES}o9?#
* @author treeroot f/Gx}x=
* @since 2006-2-2 53Adic
* @version 1.0 9&mSF0q
*/ }gp@0ri%5
public class ShellSort implements SortUtil.Sort{ @]\fO)\f
tC[ZWL
/* (non-Javadoc) ?h<4trYcv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4kOO3[r
*/ @gUp9ZwtH
public void sort(int[] data) { =BJLj0=N
for(int i=data.length/2;i>2;i/=2){ e`*}?N4d
for(int j=0;j insertSort(data,j,i); ]#/nn),Z
} t],a1I.gk
} Q>niJ'7WF
insertSort(data,0,1); X/_I2X
} n<?U6~F&~
:]3X Ez
/** Q|y }mC/
* @param data 2e48L677-
* @param j (vXr2Z<l
* @param i WBe0^=x
*/ eJDZ|$
private void insertSort(int[] data, int start, int inc) { C.j+Zb1Z(
int temp; \#sD`O
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %nA})nA7=
} ?K1B^M=8
} cNll??j
} r(,U{bU<
s!6lZ mPM
} (d9~z
&L|oqXE0L
快速排序: =SDex.ZK]
d^=BXCoC
package org.rut.util.algorithm.support; UQVL)-Z
awLvLkQb{
import org.rut.util.algorithm.SortUtil; a ~o<>H
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/** b?wrOS
* @author treeroot #^FM~5KK
* @since 2006-2-2 "be\%W+<
* @version 1.0 g[xoS\d
*/ UpoSC
public class QuickSort implements SortUtil.Sort{ #G9
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/* (non-Javadoc) %VHy?!/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Iix,}kzss
*/ [9E~=A#
public void sort(int[] data) { \PX4>/d@y
quickSort(data,0,data.length-1); }U]jy
} i4D(8;
private void quickSort(int[] data,int i,int j){ *CN *G"
int pivotIndex=(i+j)/2; *)^6'4=
file://swap `Fqth^RK?p
SortUtil.swap(data,pivotIndex,j); uWS]l[Ga
)W\)37=.
int k=partition(data,i-1,j,data[j]); p.8 bX
SortUtil.swap(data,k,j); uHbg&eW
if((k-i)>1) quickSort(data,i,k-1); X4 !93
if((j-k)>1) quickSort(data,k+1,j); "&(/bdah?&
%0\@\fC41
} Sv =YI
/** dCx63rF`G
* @param data 4[ uqsJB
* @param i G?4@[m
* @param j ss^a=?~
* @return oXo>pl
*/ ~M~DH-aX
private int partition(int[] data, int l, int r,int pivot) { c!w[)>v
do{ +.cpZqWn3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KGt:
SortUtil.swap(data,l,r); =%_=!%
} b42%^E
while(l SortUtil.swap(data,l,r); w4
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2
return l; ]w *"KG!(
} \p^V~fy7rU
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} s.M39W?
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改进后的快速排序: qI'pjTMDY
(Y py}
package org.rut.util.algorithm.support; n"iS[uj,
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import org.rut.util.algorithm.SortUtil; 0kJ8H!~u
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/** 4Kqo>|C
* @author treeroot bRo<~ rp%
* @since 2006-2-2 [^!SkQ
* @version 1.0 S5>s&
*/ kBP?_ O
public class ImprovedQuickSort implements SortUtil.Sort { T;M
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private static int MAX_STACK_SIZE=4096; fY]"_P
private static int THRESHOLD=10; 5OM#_.p
/* (non-Javadoc) 9J:|"@)N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Y0ZW't
*/
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public void sort(int[] data) { LhG\)>Y%
int[] stack=new int[MAX_STACK_SIZE]; &l6@C3N$
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int top=-1; `2>p#`
int pivot; 1dvP2E
int pivotIndex,l,r; %oBP6|e
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stack[++top]=0; x'EEmjJ
stack[++top]=data.length-1; ):N#X<b':
Jp jHbG
while(top>0){ hp f0fU
int j=stack[top--]; loA/d
int i=stack[top--]; 9]Jv
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pivotIndex=(i+j)/2; 1zRYd`IPoq
pivot=data[pivotIndex]; MKbcJZe
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SortUtil.swap(data,pivotIndex,j); =A!oLe$%
cGm3LS6]*
file://partition eEXNEgbn
l=i-1; ^i@anbH
r=j; Tm^kZuT{
do{ B=KrJ{&!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G=y~)B}
SortUtil.swap(data,l,r); ##mZ97>$
} RKLE@h7[?
while(l SortUtil.swap(data,l,r); Z9:
SortUtil.swap(data,l,j); AL":j6!OQ
A=kOSq 4Q
if((l-i)>THRESHOLD){ a!R*O3
stack[++top]=i; L9jT:2F
stack[++top]=l-1; (IV\sY
} 3JC uM_y
if((j-l)>THRESHOLD){ /mwUDf 6x
stack[++top]=l+1; :]:)c8!6
stack[++top]=j; (uX?XX^
} {.Qv1oOa
aV5M}:D
} #E+ybwA
file://new InsertSort().sort(data); G^B>C
insertSort(data); +iQ@J+k
} 7R:j^"I@
/** ezw*Lo!
* @param data s(py7{ ^K
*/ gaN/
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private void insertSort(int[] data) { RP$u/x"b
int temp; N3$1f$`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wa<k%_# M
} WVD48}HF-
} XQ~Xls%]
} ECt<\h7}
J2}poNmm
} \k5"&]I3
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归并排序: Xz @#,F:@
u7mPp3ZYK
package org.rut.util.algorithm.support; .xqi7vVHZ
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import org.rut.util.algorithm.SortUtil; N!ihj:,
(Yz[SK=U}
/** o/3.U=px~
* @author treeroot \ Bj{.jL
* @since 2006-2-2 =4` wYh
* @version 1.0 Mf14> `<`
*/ /=YNkw5
public class MergeSort implements SortUtil.Sort{ ~~Bks{"BS
t Cb34Wpf
/* (non-Javadoc) /a*){JQ5j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S3M!"l
*/ ?L\"qz%gP
public void sort(int[] data) { {C&Uq#V
int[] temp=new int[data.length]; CNb(\]
mergeSort(data,temp,0,data.length-1); :%&
E58
} S?CT6moXA
;N#}3lpLqg
private void mergeSort(int[] data,int[] temp,int l,int r){ |&"aZ!Kn
int mid=(l+r)/2; /[dMw
*SRz
if(l==r) return ; fV4rVy8
mergeSort(data,temp,l,mid); z'l
HL
mergeSort(data,temp,mid+1,r); S3/%;=|
for(int i=l;i<=r;i++){ _cvX$(Sg
temp=data; i{m!v6j:
} HL&HY)W1gf
int i1=l; tTBDb
int i2=mid+1; e_e\Ie/pDc
for(int cur=l;cur<=r;cur++){ .;g kV-]
if(i1==mid+1) q{`1[R
data[cur]=temp[i2++]; oi|N8a2R
else if(i2>r) O)`L(
x
data[cur]=temp[i1++]; 7SS#V
else if(temp[i1] data[cur]=temp[i1++]; A:ts_*
else 8Azh&c
data[cur]=temp[i2++]; QL8C!&=
} k6M D3c
} mDK*LL5]W
1q(Qr
h
} .^*;hZ~4%
Yw#fQFm
改进后的归并排序: YIwa = ^
+z nlf-
package org.rut.util.algorithm.support;
>=97~a+.
ke8g tbm
import org.rut.util.algorithm.SortUtil; ( 0/M?YQF
mH\zSk
/** lv=q( &
* @author treeroot AuK$KGCI=
* @since 2006-2-2 Hmr f\(x
* @version 1.0 R_B0CM<!
*/ .iy>N/u
public class ImprovedMergeSort implements SortUtil.Sort { ]fzXrN_
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private static final int THRESHOLD = 10; hy~[7:/<I&
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/* %:'G={G`QH
* (non-Javadoc) Xgd-^
* -_n Qn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bk\Y v0
*/ Wz.iDRFl
public void sort(int[] data) { p#jAEY p
int[] temp=new int[data.length]; we[+6Z6J
mergeSort(data,temp,0,data.length-1); UH-873AK
} ,V,mz?d^9
N$kxf
private void mergeSort(int[] data, int[] temp, int l, int r) { :0:Tl/))
int i, j, k; i<F7/p "-
int mid = (l + r) / 2; lND2Kb
if (l == r) !DOyOTR&3
return; by'KJxl[
if ((mid - l) >= THRESHOLD)
^Zz^h@+
mergeSort(data, temp, l, mid); i*/i"W<
else KGM__Z O.
insertSort(data, l, mid - l + 1); 1W'Ai"DLw
if ((r - mid) > THRESHOLD) %?+vtX
mergeSort(data, temp, mid + 1, r); T='uqKW\
else z*h:Nt%.
insertSort(data, mid + 1, r - mid); '>t&fzD0
V5(_7b#z``
for (i = l; i <= mid; i++) { Lq5xp<
temp = data; `sqr>QD
} uKAI->"
for (j = 1; j <= r - mid; j++) { r|UJJ9i
temp[r - j + 1] = data[j + mid]; =_#b
.8K
} $,@}%NlHc
int a = temp[l]; ]uox ^HC
int b = temp[r]; Zpg;hj5_
for (i = l, j = r, k = l; k <= r; k++) { " Bx@(
if (a < b) { 5h/,*p6Nje
data[k] = temp[i++]; SPE)db3
a = temp; ^%,{R},s
} else { ]TT >3"Dw7
data[k] = temp[j--]; Is4,QnY_[
b = temp[j]; 86)2\uan
} }qM^J;uy
} QO}~"lMj
} N\*oL*[j
s0dP3tz>
/** nQmHYOF%
* @param data $h
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* @param l 3h:~NL
* @param i n5kGHL2
*/ :W0p36"
private void insertSort(int[] data, int start, int len) { @$r[$D
v
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O8.xt|
} .4\I?
} \85%d0@3
} neM.M)0
} 5NZuaN
je^VJ&ac
堆排序: Axsezr/
C33Jzn's
package org.rut.util.algorithm.support; LH(P<k&
FDD=I\Ic
import org.rut.util.algorithm.SortUtil; buX(mj:&
i'li;xUhZ
/** a6n@
* @author treeroot fE~KWLm
* @since 2006-2-2 zN!W_2W*
* @version 1.0 QIMd`c
*/ SX"|~Pi(
public class HeapSort implements SortUtil.Sort{ T;(,9>Qsu
8c.>6
Hy
/* (non-Javadoc) gZtQtFi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Hx#DhiFz
*/ \JM6zR^Ef
public void sort(int[] data) { dP_QkO
MaxHeap h=new MaxHeap(); w>j5oz}
h.init(data); }d}gb`Du
for(int i=0;i h.remove(); <8 <P,
System.arraycopy(h.queue,1,data,0,data.length); 6ioj!w<N
} w{DU<e:
Dst;sLr[,
private static class MaxHeap{ ^WB[uFt-
Y^Buz<OiG
void init(int[] data){ ]Ik~TW&
this.queue=new int[data.length+1]; Oh1U=V2~
for(int i=0;i queue[++size]=data; `3\U9ZH23
fixUp(size); P?V+<c{
} =F_uK7W
} m+'1c}n^7
u!D?^:u=)
private int size=0; #6\mTL4vg
zgjgEhnvU
private int[] queue; s U`#hL6;
|iUF3s|?
public int get() { L;opQ~g
return queue[1]; >P
j#?j*Y
} c9[{P~y
\(Rj2
public void remove() { :;Z/$M16B
SortUtil.swap(queue,1,size--); y`zdI_!7
fixDown(1); ?MFC(Wsh
} |.Vgk8oTl
file://fixdown dYISjk@
private void fixDown(int k) { ?VotIruR
int j; /E<Q_/'Z
while ((j = k << 1) <= size) { y/S3ZJY
if (j < size %26amp;%26amp; queue[j] j++; #9TL5-1y
if (queue[k]>queue[j]) file://不用交换 1oO(;--u_
break; xMk>r1Ud
SortUtil.swap(queue,j,k); c\ZI
5&4jT
k = j; 3\Xk)a_
} NE#`ZUr3
} E'{:HX
private void fixUp(int k) { @lDnD%vZ`
while (k > 1) { fGV'l__\\
int j = k >> 1; 25Z}.))
if (queue[j]>queue[k]) W]Xwt'ABz
break; z{3`nd,
SortUtil.swap(queue,j,k); MRz f#o<H
k = j; ).jQ+XE'>
} Z#u{th
} q'S[TFMNE
q(~jP0pj%
} ;v]C8 }L^
f`ibP6%
} r
jn:E
n#"G)+h3#
SortUtil: OH>Gc-V
vUbgSI
package org.rut.util.algorithm; -`5]%.E&8
&V
axv$v}
import org.rut.util.algorithm.support.BubbleSort; dn'|~zf.
import org.rut.util.algorithm.support.HeapSort; VM5'd
import org.rut.util.algorithm.support.ImprovedMergeSort; ugN%8N
import org.rut.util.algorithm.support.ImprovedQuickSort; ep3VJ"^
import org.rut.util.algorithm.support.InsertSort; 9 D.wW
import org.rut.util.algorithm.support.MergeSort; ,1 H|{ <
import org.rut.util.algorithm.support.QuickSort; yH:p*|% :
import org.rut.util.algorithm.support.SelectionSort; {=?[:5
import org.rut.util.algorithm.support.ShellSort; 3 8&K"
N}/V2K]Q
/** lPz`?Hn
* @author treeroot ]lKUpsQI
* @since 2006-2-2 {w3<dfJ
* @version 1.0 mN{H^
*/ .7
j#F
public class SortUtil { ABoB=0.l
public final static int INSERT = 1; l$!ExXEZO;
public final static int BUBBLE = 2; V"8Go;[
public final static int SELECTION = 3; KJ/Gv#Kj
public final static int SHELL = 4; umuj>
public final static int QUICK = 5; MjQ>&fUK
public final static int IMPROVED_QUICK = 6; p/0dtnXa(
public final static int MERGE = 7; sE]z.Po=
public final static int IMPROVED_MERGE = 8; T] H'l
public final static int HEAP = 9; yT<"?S>D
93Gj#Mk
public static void sort(int[] data) {
]Z UE !
sort(data, IMPROVED_QUICK); Z~(X[Zl
:
} 5/6Jq
private static String[] name={ N4qBCBr(
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z{BgAI,
}; _0
43,
g3'dkS!
private static Sort[] impl=new Sort[]{ IN6L2/Q
new InsertSort(), hyPS 6Y'1
new BubbleSort(), \5N\NN @J
new SelectionSort(), bhDqRM
new ShellSort(), 21<Sfsc$
new QuickSort(), $[HCetaqV
new ImprovedQuickSort(), yo_zc<
new MergeSort(), ;L76V$&
new ImprovedMergeSort(), 0;1O;JRw
new HeapSort() )Dv;,t
}; 66B,Krz1n
4VF]tX?o
public static String toString(int algorithm){ l(QntP
return name[algorithm-1]; G?~Yw'R^8
} Q>X1 :Zn3
AWFq5YMSI
public static void sort(int[] data, int algorithm) { c<q33dZ!*
impl[algorithm-1].sort(data); D)4#AI
} n|.eL8lX.<
^Hf?["m^@
public static interface Sort { {LKW%G7
public void sort(int[] data); GRj [2I7:
} ]n1#8T&<*z
OJydt; a
public static void swap(int[] data, int i, int j) { &!:mL],
int temp = data; X/%!p<}:'
data = data[j]; It'kO jx]
data[j] = temp; ]GHw~s?
} H_8PK$c;
} j/wQ2"@a