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。 v+G=E2Lhv
插入排序: ;Hmp f0$
L\%orLEmK
package org.rut.util.algorithm.support; 0.TaXbi
@WMA }\Cc
import org.rut.util.algorithm.SortUtil; i#/]KsSp
/** !|
#83
* @author treeroot HCWNo
* @since 2006-2-2 Y}s@WJ
* @version 1.0 S >yLqPp
*/ [ sF(#Y:I
public class InsertSort implements SortUtil.Sort{ G2Vv i[c
M|,mr~rRG
/* (non-Javadoc) 58 bCUh#uw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @-HG`c ct
*/ pav'1d%
public void sort(int[] data) { rHjq1-t
int temp; FAsFjRS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -VxDNT}Tr
} gw36Ec<M
} >w+HHs/$wK
} wE]K~y!`
rG}\Zjn{
} qIIJ4n
8CbXMT
冒泡排序: H+E$:)gN
S35~Cp
package org.rut.util.algorithm.support; 7aV%=_
}e2VY
import org.rut.util.algorithm.SortUtil; #T w@wfaq)
SAYLG
/** ZJPmR/OV_
* @author treeroot ^ D%FX!$
* @since 2006-2-2 ziPR>iz-
* @version 1.0 ",6M)3{|c
*/ km~Ll
public class BubbleSort implements SortUtil.Sort{ br-]fE.be
2i;7{7
/* (non-Javadoc) :cB=SYcC%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oVFnlA
*/ Xpe)PXb
public void sort(int[] data) { %D$]VSP;
int temp; 0:w"M<80
for(int i=0;i for(int j=data.length-1;j>i;j--){ eET&pP3Rp
if(data[j] SortUtil.swap(data,j,j-1); vM:cWat
} a=cvCf
} BTgG4F/)
} jTO),
v:w
} b 5yW_Ozdh
hj'(*ND7z
} CI353-`
2 3OC2|
选择排序: 0}!\$"|D
~t9tnLc$
package org.rut.util.algorithm.support; 8>hwK )av
(aOv#Vor]%
import org.rut.util.algorithm.SortUtil; {9UEq0
ry9T U
/** 4=<tWa|@9
* @author treeroot 1`ayc|9BR
* @since 2006-2-2 `x%'jPP1^
* @version 1.0 WSuww
*/ fhL,aCS=
public class SelectionSort implements SortUtil.Sort {
nt*Hc1I
R2Zgx\VV'
/* &f-Uyr7?
* (non-Javadoc) S<'[%ihx
* AbZKYF
P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /|*
Y2ETOr
*/ y=?)n\f
public void sort(int[] data) { ;>n,:355L
int temp; jv&*uYm
for (int i = 0; i < data.length; i++) { 9$2/MT't
int lowIndex = i; 0a80 LAK
for (int j = data.length - 1; j > i; j--) { R(q~ -3~
if (data[j] < data[lowIndex]) { &=VDASEu
lowIndex = j; [Xb@Wh:yG
} L4!{h|
} gNt(,_]ZR
SortUtil.swap(data,i,lowIndex); 8F._9U-EN
} YW7b)uYf
} Y1]n^
sBcPq SMby
} iof-7{+3_
r zt Ru
Shell排序: nDHTV!]<
@3zg=?3
package org.rut.util.algorithm.support; [eC2"&}
Mnscb
import org.rut.util.algorithm.SortUtil; Y'8?.a]'
H '
/** /Njd[=B
* @author treeroot 3.*8)NW
* @since 2006-2-2 p>4-s, W
* @version 1.0 NuQdSj_>
*/ "g1)f"pL
public class ShellSort implements SortUtil.Sort{ ~^1 {B\I
<i&_ooX
/* (non-Javadoc) d8c=L8~jt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2+e}*&iQpp
*/ ^zQ/mo,Z
public void sort(int[] data) { 0@%v1Oja
for(int i=data.length/2;i>2;i/=2){ >&}%+r\
for(int j=0;j insertSort(data,j,i); vkri+:S3
} ~5}*
d
} y~U #veY
insertSort(data,0,1); rR(X9i
} w|K'M?N14
NgP&.39U
/** |R/%D%_g
* @param data -#N.X_F
* @param j +l<5#pazx
* @param i |xdsl,
*/ X:nN0p #
private void insertSort(int[] data, int start, int inc) { Ezd_`_@R
int temp; Ju1D
=b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7`DBS^O]dG
} !xo{-@@wS
} Ws|j#X<
} pL/DZ|S3
{#?N
} G}b]w~ML~
N_W}*2(
快速排序: $QLcH;+7t
UCB/=k^m
package org.rut.util.algorithm.support; pZqq]mHK
TJ6*t!'*X
import org.rut.util.algorithm.SortUtil; Krqtf
uKUiV%p!
/** \/zq7j
* @author treeroot \fz<.l]
* @since 2006-2-2 4%>$-($
* @version 1.0 7q?,
?
*/ OEA&~4&{7
public class QuickSort implements SortUtil.Sort{ K*LlW@
1\
o59Y
/* (non-Javadoc) 0zmE>/O+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r*2+xDoEi
*/ qr"3y
public void sort(int[] data) { 7)`nD<j5
quickSort(data,0,data.length-1); gY/"cq
} SJb&m-
private void quickSort(int[] data,int i,int j){ @E7DyU|
int pivotIndex=(i+j)/2; ! >(7+B3E*
file://swap +"
.X
)avF
SortUtil.swap(data,pivotIndex,j); zy/@
WFPE
#rMlI3;
int k=partition(data,i-1,j,data[j]); *2pt%eav
SortUtil.swap(data,k,j); iVhJ t#_b
if((k-i)>1) quickSort(data,i,k-1); 2=,lcWr
if((j-k)>1) quickSort(data,k+1,j); 4gI/!,J(b
QwW&\h[8?
} %?0:vn
/** FH?U(-
* @param data +~m46eI
* @param i I8hz(2jI
* @param j AifWf2$S
* @return k:t]s_`<
*/ SYAyk
private int partition(int[] data, int l, int r,int pivot) { V#2+"(7h
do{ e2 4WW^S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MU@UfB|;u
SortUtil.swap(data,l,r); }aa'\8
} ! `
while(l SortUtil.swap(data,l,r); h5*JkRm
return l; lk/n}bx
} SD"FErJ
6a(yp3
} U dT*E: 6
K
-nF lPm\
改进后的快速排序: hO\<%0F
q<xCb%#Jl
package org.rut.util.algorithm.support; |7'df &CA
%<\vGqsM
import org.rut.util.algorithm.SortUtil; $p1(He0 2
Sq>dt[7
/** t6bV?nc
* @author treeroot I:R[;TB?y
* @since 2006-2-2 [owWiN4`s
* @version 1.0 F+YZE[h%
*/ "0"nw2g?
public class ImprovedQuickSort implements SortUtil.Sort { $t$ShT)
xgwY@'GN
private static int MAX_STACK_SIZE=4096; ;5]Lf$tZ
private static int THRESHOLD=10; F&!6jv
/* (non-Javadoc) wL+s8#{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,;EIh}
*/ u
1>2v
public void sort(int[] data) { 8}I$'x
int[] stack=new int[MAX_STACK_SIZE]; ep!Rf:
g;H=6JeG/
int top=-1; pR*VdC _mY
int pivot; Vh'P&W?[
int pivotIndex,l,r; r<9Iof4
ih58<Up5
stack[++top]=0; )X1{
stack[++top]=data.length-1; Xpr?Kgz
UFXaEl}R
while(top>0){ cXA
i k-
int j=stack[top--]; \ ZgE
int i=stack[top--]; &W|[r(
M1k{t%M+S
pivotIndex=(i+j)/2; :NhO2L
pivot=data[pivotIndex]; y*4=c_Z
@CpfP;*{w`
SortUtil.swap(data,pivotIndex,j); UE8kpa)cQ
.T}Wdng
file://partition Y4J3-wK5
l=i-1; %:M^4~dc
r=j; $iN"9N%l
do{ !]"@kl%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j
b!x:
SortUtil.swap(data,l,r); qLO4#CKCL6
} @KXV%a'
while(l SortUtil.swap(data,l,r); AiwOc+R
SortUtil.swap(data,l,j); ^%d\qd`
^P[e1?SZG
if((l-i)>THRESHOLD){ 4zXFuTr($
stack[++top]=i; |J1$=s
stack[++top]=l-1; ^ sOQi6pL
} us1Hu)
if((j-l)>THRESHOLD){ &yct!YOB2
stack[++top]=l+1; #Vnkvvv
stack[++top]=j; 6]&OrS[
} RF`.xQ26=
a[>/h3
} +vw\y
file://new InsertSort().sort(data); GF"hx`zyJ
insertSort(data); l3{-z4mw
} |T<_ 5Ik
/** Q{O+
* @param data $By<$
*/ `Syl:rU~y@
private void insertSort(int[] data) { #%pI(,o=
int temp; sG(~^hJ_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H[NSqu.s
} M=8.Bp|Ye
} )1Y{Q Y}l
} j:Xq1f6a
EH-sZAv
} 2% MC Yn
I
)~GZ
归并排序: NyaQI<5D
*2ZjE!A
package org.rut.util.algorithm.support; /?wtF4
EZgq ?l~5O
import org.rut.util.algorithm.SortUtil; "x#-sZ=
TeMHm?1^
/** k)i3
* @author treeroot k
9_`(nx
* @since 2006-2-2 v|Pv 03%?7
* @version 1.0 @CNi{. RX
*/ vRznw&^E
public class MergeSort implements SortUtil.Sort{ >d(~#Z`
O24m;oHM
/* (non-Javadoc) UgRhWV~f0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Y?#Sl*
*/ Lt2u,9
public void sort(int[] data) { UI0(=>L
int[] temp=new int[data.length]; 3(``#7
mergeSort(data,temp,0,data.length-1); fIM,lt
} XP`Nf)3{Yd
O5!7'RZ
private void mergeSort(int[] data,int[] temp,int l,int r){ u6J8"<
-W
int mid=(l+r)/2; \Yy$MLs
if(l==r) return ; ?#Ge.D~u
mergeSort(data,temp,l,mid); ?)/#+[xa
mergeSort(data,temp,mid+1,r); 3t.l5m
Rg5
for(int i=l;i<=r;i++){ dR
K?~1
temp=data; pLl(iNf]
} jY&k
int i1=l; "H2EL}3/]
int i2=mid+1; .7^c@i[
for(int cur=l;cur<=r;cur++){ \h+AXs<j
if(i1==mid+1) 87=&^.~`
data[cur]=temp[i2++]; H!c@klD
else if(i2>r) _qU4Fadgm
data[cur]=temp[i1++]; Qo>b*Ku;
else if(temp[i1] data[cur]=temp[i1++]; pD(j'[
else bkRLC_/d
data[cur]=temp[i2++]; 6=kEyJT'
} PoNi"Pv
} Ii6<b6-
65L6:}#
} eFipIn)b
MlcR"gl*
改进后的归并排序: Nv$R\' 3
y+Ra4G#/}
package org.rut.util.algorithm.support; T=<@]$?
@efh{
import org.rut.util.algorithm.SortUtil; =pr`'
`K*Q5n
/** w}L]X1#sF
* @author treeroot y>:N{|
* @since 2006-2-2 "Hya6k>j
* @version 1.0 }q`ts=dlGt
*/ :1 ^LsLr5
public class ImprovedMergeSort implements SortUtil.Sort { ]E7F/O/.
s:?SF.
private static final int THRESHOLD = 10; FO+Zue.RS
9FoHD
/* LuNc,n%
* (non-Javadoc) i3dkYevs?
* ]"r&]qx7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y?rPlA_
*/ u6?Q3
bvI
public void sort(int[] data) { 'g6\CZw(#
int[] temp=new int[data.length]; :uP,f<=)K
mergeSort(data,temp,0,data.length-1); i=ea
?eT`
} YA''2Ii
t\?ik6
private void mergeSort(int[] data, int[] temp, int l, int r) { # Nk;4:[
int i, j, k; z[LNf.)}
int mid = (l + r) / 2; ? 8)'oMD
if (l == r) Ld\R:{M"
return; B%"
d~5Y
if ((mid - l) >= THRESHOLD) `
w=>I
mergeSort(data, temp, l, mid); 1G"z<v
B
else pqk?|BvpK_
insertSort(data, l, mid - l + 1);
//*fSF
if ((r - mid) > THRESHOLD) C`K?7v3$m
mergeSort(data, temp, mid + 1, r); w&X<5'GM
else b $'FvZbk
insertSort(data, mid + 1, r - mid); 7OC#8,
pN!}UqfI-
for (i = l; i <= mid; i++) { #~#R-
temp = data; Diy8gt
} V\t.3vT
for (j = 1; j <= r - mid; j++) { 6{x(.=
temp[r - j + 1] = data[j + mid]; qT,Te
} kEJj=wx
int a = temp[l]; f) zn TJL
int b = temp[r]; 'GB.UKlR
for (i = l, j = r, k = l; k <= r; k++) {
7_%"BVb"
if (a < b) { 0x'#_G65y
data[k] = temp[i++]; Mc=$/ o
a = temp; 5)FJ:1-
} else { ,3?Q(=j
data[k] = temp[j--]; -!q:p&c
b = temp[j]; mIurA?&7!
} Z?}dq-Vh&
} MTsM]o
} 9G9fDG#F\I
4\y/'`xm)6
/** wr5AG<%(
* @param data t=|evOz]
* @param l LwrUQ)
* @param i !HrKXy0{
*/ YX=a#%vrl
private void insertSort(int[] data, int start, int len) { C3*gn}[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |L-]fjBbF
} 1|RANy
} Gnf~u[T6
} UADFnwR[R
} j2ve^F:Q
>{N9kWY
堆排序: s1=X>'q
NYE`Kin-
package org.rut.util.algorithm.support; pv*,gSS
w,w{/T+B
import org.rut.util.algorithm.SortUtil; 1>*#%R?W
DSC$i|
/** 8JM&(Q%#
* @author treeroot K#EvFs`s;
* @since 2006-2-2 M\sN@+
* @version 1.0 D&/kCi= R
*/ s8-<m,*
public class HeapSort implements SortUtil.Sort{ V"*O=h
kgnmGuka
/* (non-Javadoc) o}W%I/s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d\p,2
*/ H$@`,{M629
public void sort(int[] data) { >SML"+>
MaxHeap h=new MaxHeap(); N"8_S0=pw
h.init(data); 9F4Dm*_<
for(int i=0;i h.remove(); }R1<
0~g
System.arraycopy(h.queue,1,data,0,data.length); 9^,Lc1"M>
} z8QAo\_I(
Qy.w=80kf
private static class MaxHeap{ %<E$,w>
/e7O$L)
void init(int[] data){ #bMuvaP~
this.queue=new int[data.length+1]; /4c\K-Z;
for(int i=0;i queue[++size]=data; ;u;# g
fixUp(size); >H'4{|
} &0NFb^8+
} 8S%52W|
fJ/e(t
private int size=0; ])L
A42|
Kz>3
ic$I
private int[] queue; oX0 D
E0u~i59Z
public int get() { D$bIo"
return queue[1]; @c<3b2
} RnhL<
Ywu
+)j$|x~(A
public void remove() { Rn{iaM2Y<
SortUtil.swap(queue,1,size--); T'4z=Z]w
fixDown(1); aCQ?fq
} ?\$#L^;b}
file://fixdown {.QEc0-
private void fixDown(int k) { /G5d|P
int j; kB'Fkqwm
while ((j = k << 1) <= size) { uM_#
if (j < size %26amp;%26amp; queue[j] j++; Z7_m)@%;kk
if (queue[k]>queue[j]) file://不用交换 e
' 2F#
break; 2'_:S@
SortUtil.swap(queue,j,k); VwOW=4`6
k = j; dZi(&s
} F'B8v3
} pcT:]d[1)
private void fixUp(int k) { m9" n4a|:
while (k > 1) { L5#P[cHzz
int j = k >> 1; tZ^Ou89:rG
if (queue[j]>queue[k]) ~v]!+`_J
break; /C>wd
SortUtil.swap(queue,j,k); dHK`eS$sb
k = j; Md0sK
} *d"DA[(
} %n
hm
\>CYC|
} Xlb0/T<g!
,Fi>p0bz
} N5i+3&
M@?xa/E64
SortUtil: w9,iq@
Gm(b/qDDe
package org.rut.util.algorithm; b@S Cn9
Yc,7tUz#
import org.rut.util.algorithm.support.BubbleSort; #|*F1K
import org.rut.util.algorithm.support.HeapSort; 'B@e8S)y
import org.rut.util.algorithm.support.ImprovedMergeSort; c05 %iv
import org.rut.util.algorithm.support.ImprovedQuickSort; Q8DQlqHm
import org.rut.util.algorithm.support.InsertSort; rMU T_^
import org.rut.util.algorithm.support.MergeSort; U7I qST
import org.rut.util.algorithm.support.QuickSort; |7X:TfJ
import org.rut.util.algorithm.support.SelectionSort; {%IE xPJ
import org.rut.util.algorithm.support.ShellSort; L+'Fs
7oq[38zB
/** ]R=,5kK3
* @author treeroot zOGU8Wg
* @since 2006-2-2 # g_Bx
* @version 1.0 jcI&w#re
*/ cIp
D~0\
public class SortUtil { :%sXO
public final static int INSERT = 1; i:u1s"3~
public final static int BUBBLE = 2; WHlYo5?
public final static int SELECTION = 3; (ZY@$''
public final static int SHELL = 4; vq!_^F<
public final static int QUICK = 5; Zc!@0
public final static int IMPROVED_QUICK = 6; '
4ER00
public final static int MERGE = 7; ^|TG$`M(w
public final static int IMPROVED_MERGE = 8; h;-yU.(w
public final static int HEAP = 9; $2u 'N:o
=IUUeFv +r
public static void sort(int[] data) { Le*.*\
sort(data, IMPROVED_QUICK); %s&ChM?8F
} C#H:-Q&
private static String[] name={ me'd6!O9-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &[At`Nw71
}; La@
+>
.58qL-iC
private static Sort[] impl=new Sort[]{ 5*0y7K/D
new InsertSort(), %/>Y/!;
new BubbleSort(), P|HKn,ar
new SelectionSort(), QjC22lW-
new ShellSort(), 3LfC{ER
new QuickSort(), o ,xxh
new ImprovedQuickSort(), ^mb[j`CCt
new MergeSort(), o}<4*qlI
new ImprovedMergeSort(), ~u.T- 0F
new HeapSort() ki{3IEOr}
}; ;r6jx"i
D)@YI.T
public static String toString(int algorithm){ d oB
return name[algorithm-1]; -_<}$9lz
} HXoX
YOrrkbJ(
public static void sort(int[] data, int algorithm) { N |1>ooU[
impl[algorithm-1].sort(data); YhRWz=l
} W;1|+6x
XTd3|Pm
public static interface Sort { k2xHH$+{#=
public void sort(int[] data); w ~ dk#=
} JMCW} bA
XK"-'
public static void swap(int[] data, int i, int j) { ?X-)J=XG
int temp = data; 5'Q|EIL
data = data[j]; \V>?Do7
data[j] = temp; &h~Xq^
} Pub0IIs
} @ w>zF/