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。 !Otyu6&
插入排序: }4eSB
-I4@` V
package org.rut.util.algorithm.support; @BW~A@8
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import org.rut.util.algorithm.SortUtil; @xO<~
/** 5p= T*Y
* @author treeroot z4{|?0=C
* @since 2006-2-2 Dyt}"r\
* @version 1.0 D}\%
Q #
*/ 5^f>L2
public class InsertSort implements SortUtil.Sort{ #{ `(;83
Nv #vfh9}P
/* (non-Javadoc) EVRg/{X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q3z-v&^E9
*/ 7z F29gC
public void sort(int[] data) { 1[X+6viE
int temp; q\mVZyj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6\b B#a
} 8b|&
} LG&~#x
} #W!@j"8eK
,/o<O jR
} 8LR_K]\
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冒泡排序: kS=OX5
EkjO4=~UC
package org.rut.util.algorithm.support; roW8 4x
s:;!QIC5jo
import org.rut.util.algorithm.SortUtil; Ds0^/bYp&
b.C!4^
/** ;uDH&3W
* @author treeroot }v@w(*)h:
* @since 2006-2-2 #,!.e
* @version 1.0 (B,CL222x
*/ hua{g_
public class BubbleSort implements SortUtil.Sort{ =wI,H@
~{U~9v^v(
/* (non-Javadoc) JsVW:8QO~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PN0:,.4
*/ ic?6p
public void sort(int[] data) { lh8`.sWk4V
int temp; mm:\a-8j
for(int i=0;i for(int j=data.length-1;j>i;j--){ vxZz9+UbF
if(data[j] SortUtil.swap(data,j,j-1); 2hmV1gj
} "{L%5:H@
} AP/5,M<
} yy/wSk
} &m+s5
Q@/wn
} !cp
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选择排序: e[w)U{|40
"E8-76n
package org.rut.util.algorithm.support; 'iUfr@
V:My1R0
import org.rut.util.algorithm.SortUtil; <E$5LP;:
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/** Qmzj1e$6x
* @author treeroot 65s|gfu/
* @since 2006-2-2 e)7[weGN
* @version 1.0 ,C(")?4aJ
*/ &``;1/J*W
public class SelectionSort implements SortUtil.Sort { cKFzn+
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/* *vUKh^="
* (non-Javadoc) 0(:"q!h
* />K$_T/]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &[qLl
*/ xJN
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public void sort(int[] data) { ]W-:-.prh
int temp; Zpl?zI
for (int i = 0; i < data.length; i++) { & UL(r
int lowIndex = i; [
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for (int j = data.length - 1; j > i; j--) { ZZzf+F)T
if (data[j] < data[lowIndex]) { }c%QF
lowIndex = j; :6N{~ [:4
} H:y.7
} dl(cYP8L
SortUtil.swap(data,i,lowIndex); ^<[oKi;>
} 4TC
!P}
} b\dBt#mB!
Yz\z
Qj
} jJ|u!a
.5KRi6
Shell排序: "%-HZw%X
Xk(c2s&
package org.rut.util.algorithm.support; V:F)m!
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import org.rut.util.algorithm.SortUtil; 'zi5ihiT
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/** "2N3L8?k
* @author treeroot VO#]IXaP
* @since 2006-2-2 K=+w,H#`C
* @version 1.0 GkaIqBS
*/ 2O`uzT$
public class ShellSort implements SortUtil.Sort{ SYeCz(H>d
1MX:^L!f8
/* (non-Javadoc) (9fq UbG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V5qvH"^
*/ 2EycFjO
public void sort(int[] data) { pkjL2U:
for(int i=data.length/2;i>2;i/=2){ :}o0Eb
for(int j=0;j insertSort(data,j,i); )?I1*(1{A
} .nKyB'uV
} "4&HxD8_ih
insertSort(data,0,1); =>4>Z_q
} G@
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l3b$b%0'
/** z#8GF^U:T
* @param data tJ bOn$]2"
* @param j CPFd 33
* @param i -O^ b
*/ ZTMzL%i
private void insertSort(int[] data, int start, int inc) { EX=+TOkAf
int temp; =pN?h<dc
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @C~TD)K
} N[){yaj
} >c5Vz^uM{4
} LL#7oBJdM
gO gZ
} X./8
PK?&
%7/XZQ
快速排序: -`&4>\o2Lx
v9u/<w68!
package org.rut.util.algorithm.support; ~EpMO]I
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import org.rut.util.algorithm.SortUtil; ofj7$se
? R;5ErZ
/** ?K|PM<A
* @author treeroot K>w}(td
* @since 2006-2-2 `i,ZwnLh{
* @version 1.0 KFCuv15w,3
*/ ORp6
public class QuickSort implements SortUtil.Sort{ ZgZ}^x
.A&Ey5
/* (non-Javadoc) +2|X 7wA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y%v<Cp@R
*/ NnGQ=$e
public void sort(int[] data) { KaBze67<|
quickSort(data,0,data.length-1); J &u&G7#S
}
]i=-/
private void quickSort(int[] data,int i,int j){ 2fFNJ
int pivotIndex=(i+j)/2; _+wv3?
c"
file://swap R]m`v: 9
SortUtil.swap(data,pivotIndex,j); !M)!
0r_8/|N#
int k=partition(data,i-1,j,data[j]); /^P^K
SortUtil.swap(data,k,j); MS_&;2
if((k-i)>1) quickSort(data,i,k-1); X+?*Tw!\
if((j-k)>1) quickSort(data,k+1,j); B#B$w_z
F,%qG,
} zTAt% w5
/** `a3q)}*Y
* @param data %*oz~,i
* @param i bxqXFy/I
* @param j F2AM/m^!q
* @return <E&1HeP
*/ Iwize,J~X
private int partition(int[] data, int l, int r,int pivot) { h"
P4
do{ j/#kO?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NA]7qb%%<
SortUtil.swap(data,l,r); *~lD;{2
} ;]i&AAbj
while(l SortUtil.swap(data,l,r); V4l`Alr\L
return l; DSizr4R
}
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os/~6
}
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改进后的快速排序: (+>+@G~o
C ])Q#!D|
package org.rut.util.algorithm.support; e ! 6SJ7xC
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import org.rut.util.algorithm.SortUtil; tURIDj%#p
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/** LCyci1\@
* @author treeroot \&&kUpI
* @since 2006-2-2 23_<u]V
* @version 1.0 c^6v7wT5
*/ e,Gv~ae9
public class ImprovedQuickSort implements SortUtil.Sort { G"5Nj3vd
6@]Xwq
private static int MAX_STACK_SIZE=4096; Y
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private static int THRESHOLD=10; &A*oQ3
/* (non-Javadoc) LJc
w->
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S/G,A,"c
*/ ed'}ReLK
public void sort(int[] data) { f0IljY!.
int[] stack=new int[MAX_STACK_SIZE]; ga4 gH>4
83412@&
int top=-1; Mpk^e_9`<
int pivot; wf=#w}f
int pivotIndex,l,r; uZ]B ?Z%y#
bhOyx
stack[++top]=0; 5y(irbk7
stack[++top]=data.length-1; SR*%-JbA
vk5pnCM^3
while(top>0){ xv$^%(Ujp
int j=stack[top--]; >QE^KtZ
int i=stack[top--]; xp)#a_}
8!VjXj"
pivotIndex=(i+j)/2; lE?e1mz{
pivot=data[pivotIndex]; Jj fNH
~
yD#w @yG
SortUtil.swap(data,pivotIndex,j); { )'D<:T
`RthX\Tof
file://partition !V+5$TsS
l=i-1; Eh!%NeO
r=j; AU^Wy|i5Q
do{ umcbIi('
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $-=aqUU
SortUtil.swap(data,l,r); T5 5l-.>
} )_GM&-
while(l SortUtil.swap(data,l,r); ]WWre},
SortUtil.swap(data,l,j); JV36@DVQ
c5;YKON
if((l-i)>THRESHOLD){ D4
{gt\V
stack[++top]=i; :54|Z5h|
stack[++top]=l-1; Wq<>a;m
} }ebw1G
if((j-l)>THRESHOLD){ %b\xRt[0v7
stack[++top]=l+1; t<ftEJU"'w
stack[++top]=j; &I'~:nWpt
} ~<v{CBq[
nI2}E
} ^nbze
file://new InsertSort().sort(data); s.=)p"pTd
insertSort(data); Kzo{L
} v
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/** k{c~
* @param data }2`S@Rq.WW
*/ 0a8nBo7A-X
private void insertSort(int[] data) { ^b-H
int temp; {@Diig
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :]y;t/
} ,=$yvZs4[]
} _\@i&3hkx
} &U4]hawbOU
<Cg;l<$`b
} ]DmqhK`
?aOR ^ K
归并排序: +
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;jX_e(T3m
package org.rut.util.algorithm.support; =!#DUfQf
aI8wy-3 I
import org.rut.util.algorithm.SortUtil; ,yV
pB)IQ
oYJ&BPuA'
/** |i|YlWQS
* @author treeroot ?#04x70
* @since 2006-2-2 T?AGQcG
* @version 1.0 Y1`.
*/ s$H5W`3
public class MergeSort implements SortUtil.Sort{ lz{>c.Ll[
ei\X/Z*q%P
/* (non-Javadoc) !~ -^s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x-tA{_:
*/ v|{*y
public void sort(int[] data) { KOi%zE%
int[] temp=new int[data.length]; {dMa&r|lp
mergeSort(data,temp,0,data.length-1); elKQge
} nJ*NI)
]\#RsVX
private void mergeSort(int[] data,int[] temp,int l,int r){ ni~45WX3
int mid=(l+r)/2; oC4rL\d{
if(l==r) return ; ?a}eRA7
mergeSort(data,temp,l,mid); xZ;';}&pj
mergeSort(data,temp,mid+1,r); 9sYX(Fl
for(int i=l;i<=r;i++){ UwE^ij
temp=data; 1+y&n?
} \F1nEj
int i1=l; cgz'6q'T
int i2=mid+1; }PED#Uv
for(int cur=l;cur<=r;cur++){ ^<y$+HcH
if(i1==mid+1) < "~k8:=4
data[cur]=temp[i2++]; ~-W.yg6D{
else if(i2>r) PU-~7h+$
data[cur]=temp[i1++]; l_,8_u7G
else if(temp[i1] data[cur]=temp[i1++]; DU 8)c$
else K9w24Oka
data[cur]=temp[i2++]; +S/8{2%?DG
} V8n}"
} p%3';7W\
#(
kT
} fcw\`.
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改进后的归并排序: QQ!,W':
kQ'G+Kw~F
package org.rut.util.algorithm.support; ][?GJ"O+U
Z<&:
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import org.rut.util.algorithm.SortUtil; TzK?bbgr!
2B!nLLCp+
/** >`oO(d}n[0
* @author treeroot BwEL\*$g
* @since 2006-2-2 8\I(a]kM`
* @version 1.0 N#[/h96F
*/ JBoo7a1
public class ImprovedMergeSort implements SortUtil.Sort { <n6/np!
)3G?5
OTS
private static final int THRESHOLD = 10; A@DIq/^xM
VKR6 i
/* YO,GZD`-o
* (non-Javadoc) koqH~>ZtD
* E&[ox[g{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ||!k 3t#<
*/ ^8MgNVoJ)
public void sort(int[] data) { |=h>3Z=r!
int[] temp=new int[data.length]; _')KDy7
mergeSort(data,temp,0,data.length-1); [fW:%!Y'
} 4e%SF|(Y'h
4cV(Z-\
private void mergeSort(int[] data, int[] temp, int l, int r) { *S=v1 s/
int i, j, k; ~z< ? Wh
int mid = (l + r) / 2; .0a$E`V=D
if (l == r) #vDe/o+=
return; Q7DkhKT
if ((mid - l) >= THRESHOLD) l7x%G@1#~W
mergeSort(data, temp, l, mid); |20p#]0E+
else LXK+WB/s
insertSort(data, l, mid - l + 1); Sk1yend4
if ((r - mid) > THRESHOLD) V'6%G:?0a
mergeSort(data, temp, mid + 1, r); UhEnW8^bz1
else wEkW=
insertSort(data, mid + 1, r - mid); 3b[_0
(JF\%Yj/
for (i = l; i <= mid; i++) { QTLOP~^
temp = data; 54'z"S:W
} Ur@'X-
for (j = 1; j <= r - mid; j++) { FD`V39##
temp[r - j + 1] = data[j + mid]; IzL
yn
} TnKe"TA|9
int a = temp[l]; Zd5frc$
int b = temp[r]; zCco/]h
for (i = l, j = r, k = l; k <= r; k++) { Zd~Z`B} &
if (a < b) { 9xWeVlfQ
data[k] = temp[i++]; 1$
l3-x
a = temp; `Y(/G"]
} else { ChBZGuO:
data[k] = temp[j--]; XS1>ti|<
b = temp[j]; /sYD+*a
} M&>Z[o
} ~5JXY5*o
} E8V,".!+E
g!K(xhEO
/** SYC_=X
* @param data +1cK (Si
* @param l $)\ocsO
* @param i -Ol/r=/&
*/ aIm\tPbb
private void insertSort(int[] data, int start, int len) { 2?m'Dy'JE
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NDI|;
} ,ur_n7+LH
} 1YS{;
y[o
} g.,IQ4o
} ,7/N=mz
M/#<=XhA
堆排序: [1Vh3~>J6
WO
'33Q(
package org.rut.util.algorithm.support; ~s88JLw%&u
H(""So7L
import org.rut.util.algorithm.SortUtil; .=K@M"5&
G8<,\mg+
/** T$RZRZo
* @author treeroot .ipYZg'V
* @since 2006-2-2 fc&4e:Ve
* @version 1.0 5$jKw\FF=
*/ &|',o ?'F
public class HeapSort implements SortUtil.Sort{ ^TDHPBlG
cl{;%4$9
/* (non-Javadoc) }b~ZpUL!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =m1B1St 2
*/ >-]Y%O;}
public void sort(int[] data) { tTP"*Bb
MaxHeap h=new MaxHeap(); %pV/(/Q
h.init(data); n*' |7 #;
for(int i=0;i h.remove(); v+Ooihxl
System.arraycopy(h.queue,1,data,0,data.length); zs7K :OlkA
} Pirc49c
4m%_#J{
private static class MaxHeap{ !v94FkS>
b^FB[tZ\x
void init(int[] data){ :~g=n&x
this.queue=new int[data.length+1]; 0h$23.
for(int i=0;i queue[++size]=data; mNs&*h}
fixUp(size); 7zy6`OP
} >D*L0snjV
} +]Ydf^rF
NbfV6$jo
private int size=0; -4"E]f
qM]eK\q 1
private int[] queue; up`!r;5-
{6A3?q
public int get() { &s\w:
9In
return queue[1]; :3u>%
} Eiwo==M
#=+d;RdlW
public void remove() { XG*Luc-v
SortUtil.swap(queue,1,size--); {bl^O
fixDown(1); rFdovfb
} R~;<}!Gtx
file://fixdown nKufVe
private void fixDown(int k) { p)Z$q2L
int j; g)2}`}
while ((j = k << 1) <= size) { =3l%ZL/
if (j < size %26amp;%26amp; queue[j] j++; "M1[@xog
if (queue[k]>queue[j]) file://不用交换 @/XA*9]l
break; fnwtD*``
SortUtil.swap(queue,j,k); F}.<x5I-;h
k = j; $^d,>hJi
} Xb3z<r
} L)J0TSh
private void fixUp(int k) { XkOsnI8n
while (k > 1) { d\D.l^
int j = k >> 1; ^q7
fN0"6
if (queue[j]>queue[k]) \h?C
G_|]
break; yw$er?
SortUtil.swap(queue,j,k); }M * Oo
k = j; &+d>xy\^/
} ojUBa/
} j:\MrYt0H
i\2~yXw\
} Z6A*9m
]xfu@''
} Tf<1Z{9
F3i+t+Jt
SortUtil: Hq3"OMG q
X^eTf-*T
package org.rut.util.algorithm; | Fm(
zT*EpIa+LS
import org.rut.util.algorithm.support.BubbleSort; pQ!NhzQ
import org.rut.util.algorithm.support.HeapSort; nB WVG
import org.rut.util.algorithm.support.ImprovedMergeSort; p,Qr9p3y
import org.rut.util.algorithm.support.ImprovedQuickSort; ab: yH ')
import org.rut.util.algorithm.support.InsertSort; z* "zXLC
import org.rut.util.algorithm.support.MergeSort; uL\ B[<:
import org.rut.util.algorithm.support.QuickSort; r|:i: ii
import org.rut.util.algorithm.support.SelectionSort; U;Y{=07a@
import org.rut.util.algorithm.support.ShellSort; #\_N-bVu
a4Fe MCvV9
/** S{7A3
x'B
* @author treeroot k$j>_U? P
* @since 2006-2-2 6DD"Asi+
* @version 1.0 nM>oG'm[n
*/ :]v%6i.
public class SortUtil { sjvlnnO
public final static int INSERT = 1; NVAt-u0LB
public final static int BUBBLE = 2; @~qlSU&
public final static int SELECTION = 3; n&jfJgD&g
public final static int SHELL = 4; *?VbN}g2
public final static int QUICK = 5; q
okgu$2
public final static int IMPROVED_QUICK = 6; L
Me{5H
public final static int MERGE = 7; z}&?^YU*)`
public final static int IMPROVED_MERGE = 8; D4$;jz,,
public final static int HEAP = 9; ?<STt 9
'%vb&a!.6
public static void sort(int[] data) { 5IE 2&V
sort(data, IMPROVED_QUICK); tXV9+AJ
} d<r=f"
private static String[] name={ !ZJ"lm
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B\G?dmo
}; }_vE
lBh6$
BxS\"W
private static Sort[] impl=new Sort[]{ vd6Y'Zk|F6
new InsertSort(),
0GK<l
new BubbleSort(), <Wn={1Ts"
new SelectionSort(), 7F!_gj p
new ShellSort(), xT6&;,|`
new QuickSort(),
yl0&|Ub
new ImprovedQuickSort(), y-w=4_W
new MergeSort(), e
C?adCb
new ImprovedMergeSort(), ouL/tt_~
new HeapSort() L}T:Y).
}; f 0A0uU8y
mEyJ
o|
public static String toString(int algorithm){ ]3uErnI
return name[algorithm-1]; Ne!F
p
} mtSOygd
,u8)g;8s
public static void sort(int[] data, int algorithm) { G1=GzAd$5
impl[algorithm-1].sort(data); $T.we+u
} <csz4tL}P
BU(:6
public static interface Sort { ~za=yZo7(
public void sort(int[] data); ?mU
3foa
} OOA%NKV
7p}J]!Z
public static void swap(int[] data, int i, int j) { CZe0kH^:{
int temp = data; RY3ANEu+
data = data[j];
jT}3Zn
data[j] = temp; A[`c2v-hF
} QV,X> !Nz
} 'Alt+O_