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。 %Ot2bhK;
插入排序: R.KqTEs<k
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package org.rut.util.algorithm.support; Wz}DC7
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import org.rut.util.algorithm.SortUtil; AawK/tfs
/** V4c$V]7
* @author treeroot y^utMH
* @since 2006-2-2 :Bk!YK
* @version 1.0 ]#)1(ZE
*/ !Db0r/_:G
public class InsertSort implements SortUtil.Sort{ pVuJ4+`
CHeU`!:
/* (non-Javadoc) HTfHAc?W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EVovx7dr
*/ iF.eBL%
public void sort(int[] data) { `gI`Cq4
int temp; m|tE3UBNv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {Pi+VuLE
} &.1F\/]k
} 3$cIm+
} 5f.G^A: _X
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} r3 OTU$t?
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冒泡排序: PQ}q5?N
#w2;n@7;X
package org.rut.util.algorithm.support; 1h.Ypzu
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import org.rut.util.algorithm.SortUtil; ["5Z=4
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/** &4g]#A >@
* @author treeroot P=Au~2X
* @since 2006-2-2 ZS\jbii8
* @version 1.0 ?kOtK
*/ YA7h! %52)
public class BubbleSort implements SortUtil.Sort{ ~d+.w%Z`
v% mAU3M
/* (non-Javadoc) B/P E{ /
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RTHe#`t
*/ y.KFz9Qv
public void sort(int[] data) { *}yOL
[
int temp; fn6;
for(int i=0;i for(int j=data.length-1;j>i;j--){ P[;<,U;'HO
if(data[j] SortUtil.swap(data,j,j-1); 'QR
@G
} UIhU[f]
} *pu ,|
} /}%$fB
} `# N j8
u`%Kh_
} W u4` 3
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选择排序: Idy{(Q
v' x)AbbC
package org.rut.util.algorithm.support; <W,M?r+
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wngn
import org.rut.util.algorithm.SortUtil; \KBE+yj
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/** i_ha^mq3
* @author treeroot QkEIV<T&)l
* @since 2006-2-2 PS" ,
* @version 1.0 r2KfZ>tWg"
*/ ? {@UB*
public class SelectionSort implements SortUtil.Sort { `y1nex-0
jRk"#:
/* `v]|x,l+C
* (non-Javadoc) ~ULD{Ov'F
* >";I3S-t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P;A9t #\
*/ 3M 5+!H
public void sort(int[] data) { m|:O:<
int temp; DEdJH4
for (int i = 0; i < data.length; i++) { av}Giz
int lowIndex = i; Ya%-/u
for (int j = data.length - 1; j > i; j--) { v)^8e0vx
if (data[j] < data[lowIndex]) { xJ2DkZ
lowIndex = j; .3yoDab
} ,Z2fVz~9
} t`b!3U>I
SortUtil.swap(data,i,lowIndex); Gr1WBYK
} 'U9l
} P^wDt14>
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} \`FpBE_e)
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Shell排序: s)gU vS\
V^v?;f?
package org.rut.util.algorithm.support; .(RX;.lw
5:oteNc3
import org.rut.util.algorithm.SortUtil; n54}WGo>9
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/** B) 5QI
* @author treeroot X&s@S5=r]
* @since 2006-2-2 kjS9?>i
* @version 1.0 jrF#DDH?I
*/ J)*7JX
public class ShellSort implements SortUtil.Sort{ T-;|E^
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v;%>F)I
*/ _LYI#D
public void sort(int[] data) { VL[}
for(int i=data.length/2;i>2;i/=2){ nm8XHk]
for(int j=0;j insertSort(data,j,i); n7CwGN%
} ;,OZ8g)LH
} V2v}F=
insertSort(data,0,1); I1J/de,u
} :n%KHen3\
<Qx]"ZP%
/** >EVY,
* @param data i]8 +JG6
* @param j B1u.aa$
* @param i KtR*/<7IC
*/
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private void insertSort(int[] data, int start, int inc) { eu^B
int temp; xE0'eC5n^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F\)?Ntj)>@
} lD K<gd
} oP%'8%tk
} ,;
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+nOa&d\
} RTXl3
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快速排序: V\2&?#GZ
hFiJHV
package org.rut.util.algorithm.support; +|iJQF
saPg2N,
import org.rut.util.algorithm.SortUtil; vz87]InI
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/** [VL+X^
* @author treeroot u/,ng&!
* @since 2006-2-2 MlVVST
* @version 1.0 fxcCz 5
*/ ?h1r6?Sug{
public class QuickSort implements SortUtil.Sort{ MODi:jsl
vIK+18v7
/* (non-Javadoc) kX1#+X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ln3<r&&Jz
*/ #[<XNs!"
public void sort(int[] data) { U~nW>WJ+.
quickSort(data,0,data.length-1); `#Yv(a2TY
} #]MV
private void quickSort(int[] data,int i,int j){ (&=gM
int pivotIndex=(i+j)/2; {0?]weN*
file://swap BQ
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SortUtil.swap(data,pivotIndex,j); \c .^^8r
$HE ?B{
int k=partition(data,i-1,j,data[j]); Dau'VtzN
SortUtil.swap(data,k,j); \-F
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if((k-i)>1) quickSort(data,i,k-1); O"c@x:i
if((j-k)>1) quickSort(data,k+1,j); (vXes.|+t
d8V)eZYXy~
} D(YNa
/** >ow5aOlQ&
* @param data 7c7:B2Lq
* @param i K[G=J
* @param j :TTZ@ q
* @return !92zC._
*/ Rv^
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private int partition(int[] data, int l, int r,int pivot) { [$+N"4
do{ \y\@=j
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x_eR/B>
SortUtil.swap(data,l,r); rf[w&~R
} z~ R: !O-
while(l SortUtil.swap(data,l,r); oDvE0"Sz
return l; 0DIXd*oj &
} So^;5tG
]u(EEsG/
} E5EAk6
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改进后的快速排序: `~S; UG
1|8<!Hx#-
package org.rut.util.algorithm.support; 2uajK..b
1TIP23:
import org.rut.util.algorithm.SortUtil; ]DV=/RpJ9B
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/** D)my@W0,
* @author treeroot ns/L./z
* @since 2006-2-2 }0(.HMiGj
* @version 1.0 }.$5'VGO
*/ tc2e)WZP
public class ImprovedQuickSort implements SortUtil.Sort { kd3vlp
nYF;.k
private static int MAX_STACK_SIZE=4096; cf7UV6D g
private static int THRESHOLD=10; 4a6WQVS
/* (non-Javadoc) pk&;5|cCD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p\&Lbuzv
*/ G$HXc$OY
public void sort(int[] data) { #rs]5tx([
int[] stack=new int[MAX_STACK_SIZE]; = "N?v-
w]ZE('3%W
int top=-1; t R(Nko
int pivot; ( ;(DI^Un8
int pivotIndex,l,r; O 6}eV^y
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stack[++top]=0; o(5eb;"yi>
stack[++top]=data.length-1; UW?(-_8
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while(top>0){ ztRe\(9bL
int j=stack[top--]; <hA1[S}
int i=stack[top--]; i;GF/pi
r`8>@2sW1
pivotIndex=(i+j)/2; TODTR7yGo
pivot=data[pivotIndex]; %0<-5&GE
nR2pqaKc
SortUtil.swap(data,pivotIndex,j); dhAkD-Lh
l)^sE)
file://partition \F
}s"#
l=i-1; \W',g[Y:
r=j; 2[;4D/`*
do{ ;vDjd2@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *;noZ9{"+
SortUtil.swap(data,l,r); zKP{A Sk
} C72!::o
while(l SortUtil.swap(data,l,r); X4bB
SortUtil.swap(data,l,j); K\2UwX
tU :,s^E"#
if((l-i)>THRESHOLD){ PU\?eA
stack[++top]=i; (r ]3tGp
stack[++top]=l-1; {ejJI/o0
} r-,P
if((j-l)>THRESHOLD){ CI~P3"`]
stack[++top]=l+1; AdWLab;
stack[++top]=j; :{YOJDtR
} ;<9 dND
#w
*]`5
T
} Jn/"(mM
file://new InsertSort().sort(data); L#|,_j=9
insertSort(data); rphfW:
} Z|h&Zd1z
/** b;;C><
* @param data 1lJY=`8qa
*/ iLyJ7zby
private void insertSort(int[] data) { {r$n
$
int temp; 8!T6N2O6d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $<~o,e-4
} #:5vN-9?
} z'(][SB
} =y>g:}G7
*_aeK~du.
} b/I_iJ8t
b\dzB\,&
归并排序: ,dG2[<?o
F_?aoP&5
package org.rut.util.algorithm.support; (q@DBb4
n'&Cr0{
import org.rut.util.algorithm.SortUtil; &f:"p*=a\
C_RxJWka
/** is2OJ,
* @author treeroot 5c W2
* @since 2006-2-2 G/w&yd4
* @version 1.0 =xa:>Vh#
*/ y7s:Buyc
public class MergeSort implements SortUtil.Sort{ C|@6rr9TA
ZP]l%6\.
/* (non-Javadoc) lhyWlO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C`uZr k/
*/ 8w:A""
public void sort(int[] data) { \UD:9g"
int[] temp=new int[data.length]; ncGg@$E
mergeSort(data,temp,0,data.length-1); mX2(SFpJar
} RP"YSnF3
U|Du9_0
private void mergeSort(int[] data,int[] temp,int l,int r){ c']3N
int mid=(l+r)/2; 1236W+
if(l==r) return ; h7}D//~p
mergeSort(data,temp,l,mid); @Yv.HhO9
mergeSort(data,temp,mid+1,r); x/UmpJD+
for(int i=l;i<=r;i++){ vw;GbQH(
temp=data; :$>Co\D
} VdVUYp
int i1=l; !c;Z<@
int i2=mid+1; 2]$
7
for(int cur=l;cur<=r;cur++){ ~w&_l57
if(i1==mid+1) x9,X0JO
data[cur]=temp[i2++]; Y"x9B%e
else if(i2>r) KqM!7
data[cur]=temp[i1++]; )&Bf%1>
else if(temp[i1] data[cur]=temp[i1++]; 8 f""@TTp
else yc#0c[ZQu
data[cur]=temp[i2++]; Xx=jN1=,
} 8BL]]gT-I
} ?"d25LyN
IfK%i/J
} -2{NIF^H
W+F^(SC\
改进后的归并排序: XIg GE)n
;^Q- 1
package org.rut.util.algorithm.support; mHm"QBa!
qmWK8}F.cE
import org.rut.util.algorithm.SortUtil; 5#DtaVz
0/1Ay{ns
/** &!@7+'])
* @author treeroot 5gdsV4DH$
* @since 2006-2-2 cZd9A(1"^
* @version 1.0 7S
+YQ$_
*/ Gu3# y"a>
public class ImprovedMergeSort implements SortUtil.Sort { TqvgCk-
k>2tC<
private static final int THRESHOLD = 10; pj~Ao+
2MV!@rx
/* kM#ZpI&0%
* (non-Javadoc) sPu@t&$
* %\ifnIQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _(qU%B
*/ 3gUGfedi
public void sort(int[] data) { 0Gq}x;8H&
int[] temp=new int[data.length]; $CgJ+ua\8
mergeSort(data,temp,0,data.length-1);
$Ur-Q d
} dx/NY1
h#Z5vH
private void mergeSort(int[] data, int[] temp, int l, int r) { 5Tl3k=o}
int i, j, k; bv%A;
int mid = (l + r) / 2; u_;&+o2
if (l == r) "_g3{[es!
return; y; .U-}e1
if ((mid - l) >= THRESHOLD) 55mDLiA
mergeSort(data, temp, l, mid); M%\=Fb
else F$|Ec9
insertSort(data, l, mid - l + 1); 8hKyp5(%l
if ((r - mid) > THRESHOLD) Y[0
mergeSort(data, temp, mid + 1, r); yY3Mv/R
else /C'dW
insertSort(data, mid + 1, r - mid); z_A:MoYfo
@(~m. p|
for (i = l; i <= mid; i++) { RPXkf71iM
temp = data; R*DQm
} 1L4-hYtCj
for (j = 1; j <= r - mid; j++) { *c0\<BI
temp[r - j + 1] = data[j + mid]; UC u4S >
} B!;qz[]I
int a = temp[l]; )\!-n]+A
int b = temp[r]; l'K3)yQEJ
for (i = l, j = r, k = l; k <= r; k++) { 8,5H^Bi
if (a < b) { 5ree3 quh
data[k] = temp[i++]; Q#,j,h
a = temp; 4X()D {uR
} else { 4!I;U>b b
data[k] = temp[j--]; pejG%pJ
b = temp[j]; pE^j Uxk6
} 7jf%-X
} kOQq+_Y
} HxH.=M8S_
9rCvnP=
/** %+1;iuDL
* @param data x+X^K_*
* @param l Me.t_)
* @param i #nzVgV]
*/ uia[>&2
private void insertSort(int[] data, int start, int len) { dV:vM9+x
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K<3$>/|
} %. zcE@7*
} cc$L56q
} u`Sg' ro
} iJr 1w&GL$
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堆排序: :.K#=ROP
#Is/j =
package org.rut.util.algorithm.support; 9uRs@]i
o|FY-+
import org.rut.util.algorithm.SortUtil; {|jrYU.k~
PN +<C7/
/** MmvMuX]#)
* @author treeroot 4raKhN"
* @since 2006-2-2 cSkJlhwNn
* @version 1.0 c'678!r9 P
*/ ,J(+%#$UT
public class HeapSort implements SortUtil.Sort{ s*XwU
y*AB=d^
/* (non-Javadoc) ^LO`6,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X`,]@c%C`
*/ d- wbZ)BR
public void sort(int[] data) { Gz>M`M`[4
MaxHeap h=new MaxHeap(); HLPnbI-+
h.init(data); \Jcj4
for(int i=0;i h.remove(); s[ CnJZ\q
System.arraycopy(h.queue,1,data,0,data.length); LMV0:\>
} dV5a Ij
xz#.3|_('
private static class MaxHeap{ !JkH$~
N~w4|q!]
void init(int[] data){ 77:s=)
this.queue=new int[data.length+1]; r%QnV0L^
for(int i=0;i queue[++size]=data; 5_d=~whO&2
fixUp(size); XO=UKk+EK
} z_jTR[dY
} p
PF]&:&-b
mp{r$tc
private int size=0; I>]t% YKj
WLb*\
private int[] queue; rQ4i %.
zeXMi:X
public int get() { ^w+jPT-n
return queue[1]; T}?vp~./
} f
+#
7\q_^
public void remove() { 6Wos6_
SortUtil.swap(queue,1,size--); wc-ll&0Z
fixDown(1); e|L$e0
} BBub'
file://fixdown =uYz4IDB
private void fixDown(int k) { V!'N:je
int j; ]wMp`}$b@L
while ((j = k << 1) <= size) { +UK".
if (j < size %26amp;%26amp; queue[j] j++; 0P5!fXs*
if (queue[k]>queue[j]) file://不用交换 yxECK&&P0#
break; "dKYJ&$
SortUtil.swap(queue,j,k); $jd>=TU|
k = j; "!yKX(aTX
} $ljgFmR_
} ]g>@r.Nc
private void fixUp(int k) { [ imC21U
while (k > 1) { jU#/yM"Y
int j = k >> 1; A~vZ}?*M
if (queue[j]>queue[k]) M!=WBw8Y]a
break; )8c`o
SortUtil.swap(queue,j,k); 4{'0-7}
k = j; a{lDHk`Wf
} q4k)E
} ~IHjj1s
u5f+%!p
} 5(/ 5$u
ZKGS?z
} @-z#vJ5Qe{
2p( M`@
SortUtil: iA~b[20&
w"CcWng1
package org.rut.util.algorithm; fwy-M:
CfMq?.4%E}
import org.rut.util.algorithm.support.BubbleSort; Fr%LV#Q
import org.rut.util.algorithm.support.HeapSort; x8a?I T.
import org.rut.util.algorithm.support.ImprovedMergeSort; gTK5z.]
import org.rut.util.algorithm.support.ImprovedQuickSort; Co2* -[R
import org.rut.util.algorithm.support.InsertSort; wz*QB6QtU
import org.rut.util.algorithm.support.MergeSort; wHW";3w2~
import org.rut.util.algorithm.support.QuickSort; c<V.\y0x
import org.rut.util.algorithm.support.SelectionSort; 2Yx6.e<
import org.rut.util.algorithm.support.ShellSort; ^n@.
\/jr0):
/** bQ-5uFe~$B
* @author treeroot Ejdw"P"
* @since 2006-2-2 ,L+tm>I
* @version 1.0 +#5nk,1c>
*/ e`Xy!@`_
public class SortUtil { Na^1dn
public final static int INSERT = 1; XA~Rn>7&H
public final static int BUBBLE = 2; :&=TE 2
public final static int SELECTION = 3; z_#B 4
public final static int SHELL = 4; }>JFO:v&
public final static int QUICK = 5; pti`q)
public final static int IMPROVED_QUICK = 6; QD LXfl/
public final static int MERGE = 7; XD`QU m
public final static int IMPROVED_MERGE = 8;
6h
N~<
public final static int HEAP = 9; :GC<U|p
d:0RDK-}s
public static void sort(int[] data) { p\o=fcH%E
sort(data, IMPROVED_QUICK); Y[gj2vNe4g
} J/j1Yf'9
private static String[] name={ pN<wO1\9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w>T1D
}; Lj"~6l`)
b .k
J&c
private static Sort[] impl=new Sort[]{ tRYMK+
new InsertSort(), c/ wzV
new BubbleSort(), eL9RrSXz
new SelectionSort(), ]RmQ*F-
new ShellSort(), 88}c+V+N!
new QuickSort(), .+7GecYz
new ImprovedQuickSort(), XM3N>OR.
new MergeSort(), <ns[(
Q
new ImprovedMergeSort(), OiX>^_iDt
new HeapSort() #Nxk3He]8
}; lhTjG,U=
%4U;Rdq&Ud
public static String toString(int algorithm){ H,qIHQW#
return name[algorithm-1]; ]#N2:ych
} n6;jIf|
nBL7LocvR
public static void sort(int[] data, int algorithm) { 4VPL
-":6
impl[algorithm-1].sort(data); v$"#9oh
} s)"C~w^
g^(wZ$NH
public static interface Sort { ^~(vP:
public void sort(int[] data); xA]CtB*o7
} w4pU^&O
>z6(fM`i
public static void swap(int[] data, int i, int j) { 7]YLe+Ds
int temp = data; aksyr$d0V<
data = data[j]; $78fR8|r-
data[j] = temp; jcQ{,9
H`l
} `pzp(\lc
} Nh~ Hh(