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。 5I2 h(Td
插入排序: 5hy7}*dR
NZv 8#
package org.rut.util.algorithm.support; |v%$Q/zp&
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import org.rut.util.algorithm.SortUtil; *X$qgSW
/** >QvqH 2
* @author treeroot C_/eNu\I
* @since 2006-2-2 r<1W.xd":
* @version 1.0 #*.4Jv<R
*/ +58^{_k+%
public class InsertSort implements SortUtil.Sort{ .<>t2,Af
1aO(+](;
/* (non-Javadoc) MbCz*oW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Vq'%b9
*/ ]S s63Vd
public void sort(int[] data) { g2TK(S|#
int temp; Uz,P^\8^$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jj[3rt?8
} 4cSs=|m?+
} N*|EfI|X
} Z0zEX?2mb
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} r9u'+$vmF
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冒泡排序: w9GY/]
(*\&xRY|C
package org.rut.util.algorithm.support; @H$am
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import org.rut.util.algorithm.SortUtil; r+[g.`
K/C}
/** okRt^qe
* @author treeroot &$CyT6mb^
* @since 2006-2-2 ~s4JGV~R
* @version 1.0 6x(b/`VW
*/ @q<h.#9
public class BubbleSort implements SortUtil.Sort{ !gLJBp
CPNV\qCY
/* (non-Javadoc) \R@}X cqZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ZZfN@6
*/ KYB3n85 1
public void sort(int[] data) { ,?j!c*
int temp; k7*-v/*S
for(int i=0;i for(int j=data.length-1;j>i;j--){ .aa7*e
if(data[j] SortUtil.swap(data,j,j-1); DL~!
^fx
} lY`WEu
} "~=}&
} 2BO H8Mp9
} gsQn@(;
>BO!jv!a
} cp8w
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tQ;Fgv8Y!
选择排序: st "@kHQ3
OI)k0t^;D
package org.rut.util.algorithm.support; 0K^@P#{hd
D&mPYxXL
import org.rut.util.algorithm.SortUtil; : ciwh
-M]/Xv]
/** iWW!'u$+I`
* @author treeroot LL3| U
* @since 2006-2-2 fy>3#`T-
* @version 1.0 ~8k`~t!
*/ ]A-LgDsS
public class SelectionSort implements SortUtil.Sort { jK6dI
7h
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/* %iIr %P?
* (non-Javadoc) l@UF-n~[
* nSo.,72
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e'npa*.e
*/ DPnrzV)
public void sort(int[] data) { /8_x]Es/
int temp; A;C4>U Y
for (int i = 0; i < data.length; i++) { O[1Q#
int lowIndex = i; ,82?kky
for (int j = data.length - 1; j > i; j--) { 0[g5[?Vy
if (data[j] < data[lowIndex]) { i0x[w>\-
lowIndex = j; UeBSt.
} :WH0=Bieh
} w{;bvq%lY
SortUtil.swap(data,i,lowIndex); fH,h\0
} !h1|B7N
} =hh,yi
\@ZD.d#
} q,Nqv[va
GZ:1bV37%
Shell排序: ='eQh\T)
wjID*s[
package org.rut.util.algorithm.support; 9WoTo ,q
2+(SR.oGq
import org.rut.util.algorithm.SortUtil; fEK%)Z:0
yq[CA`zVN
/** 9Kz}
* @author treeroot q4/P'.S
* @since 2006-2-2 Hn)^C{RN*{
* @version 1.0 fk5pPm|MiL
*/ x?R1/iHv
public class ShellSort implements SortUtil.Sort{ 2F1Bz<
,`ehR6b
/* (non-Javadoc) QA!'p1{#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M|z4Dy
*/ .0y .0=l
public void sort(int[] data) { Y5IQhV.
for(int i=data.length/2;i>2;i/=2){ Y-DHW/Z~
for(int j=0;j insertSort(data,j,i); A sf]sU..
} kafj?F
} tN;~.\TKg
insertSort(data,0,1); [ dVRVm0N
} m<4tH5};d
Wc##.qU
/** ]mO7O+
* @param data [py/\zkn
* @param j @q" #.?>s
* @param i L|2WTyMU
*/ >Cr'dKZ}
private void insertSort(int[] data, int start, int inc) { Kzfy0LWM
int temp; #|l#
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g31\7\)Ir
} 6O'B:5~[2
} y=y#*yn &
} kvt"7;(
(TGG?V
} cC`PmDGq
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快速排序: R?,XSJ
;&RHc#1F
package org.rut.util.algorithm.support; /(ArA=#
_H2%6t/V
import org.rut.util.algorithm.SortUtil; 7}e{&\0=l
%i9*2{e#~
/** .TRp74
* @author treeroot \G]vTK3
* @since 2006-2-2 qZ+^ND(I
* @version 1.0 W(*?rA- PP
*/ Y5Z<uD
public class QuickSort implements SortUtil.Sort{ z6Yx
)qBE<
];}7
%3
/* (non-Javadoc) #J
c)v0_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V0$:t^^
*/ -+|{#cz
public void sort(int[] data) { '%A*Z,f
quickSort(data,0,data.length-1); V)r6bb{^
} %?:eURQ
private void quickSort(int[] data,int i,int j){ =g^JJpS
int pivotIndex=(i+j)/2; lLeN`{?
file://swap 5l(NX
SortUtil.swap(data,pivotIndex,j); :,dO7dJi
ApAHa]Ccp
int k=partition(data,i-1,j,data[j]); (=i+{
3`|
SortUtil.swap(data,k,j); DKf:0E8
if((k-i)>1) quickSort(data,i,k-1); _Nq7_iT0
if((j-k)>1) quickSort(data,k+1,j); >_?Waz%
(V+iJ_1g{
} +D+Rf,D
/** :E9 @9>3S
* @param data k<NEauQ
* @param i Z0%Qy+%
* @param j 7(= 09z
* @return {[.<BU-
*/ wS1zd?
private int partition(int[] data, int l, int r,int pivot) { k39;7J
do{ &!FWo@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s3l:ST
SortUtil.swap(data,l,r); 1{X ;&y
} zINziAp{
while(l SortUtil.swap(data,l,r); {B
lM<
return l; G^Yg[*bJ^$
} z@em1W0?Z
q--;5"=S
} >NN&j#;x~
r$Ck:Q}
改进后的快速排序: }xM >F%
p8MPn>h<
package org.rut.util.algorithm.support; R~DZY{u+/$
7vs>PV
import org.rut.util.algorithm.SortUtil; kFHtZS(
"Dwaq*L
/** L2
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* @author treeroot 4!KUPgg
* @since 2006-2-2 OmX(3>:9
* @version 1.0 ?KfV>.()
*/ uCNi&.
public class ImprovedQuickSort implements SortUtil.Sort { 5}t}Wc8
{m+(j (6-
private static int MAX_STACK_SIZE=4096; o=VDO,eS
private static int THRESHOLD=10; 7Z<ba^r}
/* (non-Javadoc) ta 66AEc9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PxHHh{y%c
*/ Os-sYaW
public void sort(int[] data) { Ui`Z>,0sFi
int[] stack=new int[MAX_STACK_SIZE]; (AnM_s
mxV0"$'Fm
int top=-1; KoNJ;YiKtN
int pivot; -NyfW+T={
int pivotIndex,l,r; *^&2L,w
JH;\wfrD
stack[++top]=0; 6-<>P E2
stack[++top]=data.length-1; 36U
zfBa
.3.oan*i
while(top>0){ gf8DhiB
int j=stack[top--]; ESl</"<J
int i=stack[top--]; $NtbI:e{
%kJ_o*"
pivotIndex=(i+j)/2; JW4~Qwx
pivot=data[pivotIndex]; MdOQEWJ$|
fc#zhp5bX
SortUtil.swap(data,pivotIndex,j); &u'$q
f 6h!wx
file://partition 2%Y]M%P
l=i-1; KGsH3{r
r=j;
5 5_#?vw
do{ `'{>2d%\g
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (0T6kD
SortUtil.swap(data,l,r); VY5/C;0^h
} v}$KlT
while(l SortUtil.swap(data,l,r); p=65L
SortUtil.swap(data,l,j);
!Z'x h +
.*s1d)\:
if((l-i)>THRESHOLD){ dt(#|8i%
stack[++top]=i; Rx22W:S=C.
stack[++top]=l-1; Ok=RhoZZ
} CN$wlhs
if((j-l)>THRESHOLD){ ljij/ C=
stack[++top]=l+1; DhwFD8tT
stack[++top]=j; 2R!1Vl
}
RTW4r9~'
:!h1S`wS
} yqm^4)Dp
file://new InsertSort().sort(data); <I{)p;u1
insertSort(data); aD1G\*AFJ
} .*N,x0B(
/** E K)7g~
* @param data VE<&0d<
*/ q.l"Y#d
private void insertSort(int[] data) { Fx.hti
int temp; +d0&(b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \WnI&nu
}
w34&m
} `H5n_km
} ",c(cYVW
cboue
LEt
} w>:~Ev]
]e'Ol$3U9=
归并排序: MHv2r
S'NZb!1+
package org.rut.util.algorithm.support; \)=X=yn2
yk4Huq&2
import org.rut.util.algorithm.SortUtil; J3oj}M*
DL5`A?/
/** 9nFPGIz+
* @author treeroot a3wTcp "r
* @since 2006-2-2 ]}_@!F)
* @version 1.0 J?WT
*/ Z^w}: {
public class MergeSort implements SortUtil.Sort{ !}D!_z,)u
GB1[`U%
/* (non-Javadoc) uM\(#jZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m/)Wn
*/ pv.0!a/M
public void sort(int[] data) { =gCv`SFW
int[] temp=new int[data.length]; bY4~\cP.
mergeSort(data,temp,0,data.length-1); 30(O]@f~
} 2Rc'1sCth-
xD}ha
private void mergeSort(int[] data,int[] temp,int l,int r){ $z!o&3c'x
int mid=(l+r)/2; )p&FDK#ob=
if(l==r) return ; 4}FuoQL
mergeSort(data,temp,l,mid); NJG-~w
mergeSort(data,temp,mid+1,r); A#gmKS<J/7
for(int i=l;i<=r;i++){ 7u"t4Or
temp=data; 2,c{Z$\kn
} 9Z,vpTE
int i1=l; !\Y85o>JU
int i2=mid+1; w`(EW>i
for(int cur=l;cur<=r;cur++){ rzH*| B0g
if(i1==mid+1) 5eI3a!E]O
data[cur]=temp[i2++]; e7f3dqn0
else if(i2>r) ^mLZT*
data[cur]=temp[i1++]; ;Ocih<4k
else if(temp[i1] data[cur]=temp[i1++]; N4$!V}pp
else ~VZ)LQ'7
data[cur]=temp[i2++]; p$XL|1G*?H
} 7(;M
} G 2]/g
_ECWS fZ
} / vI sX3v
JG xuB*}
改进后的归并排序: PiMW29B^
@|:_ ?
package org.rut.util.algorithm.support; #/NZ0IbHk
VC
"66\d&
import org.rut.util.algorithm.SortUtil; KJPCO0"
\$Xo5f<
/** 12\h| S~
* @author treeroot !Pf_he
* @since 2006-2-2 T6[];|%W
* @version 1.0 F6*n,[5(
*/ yUF<qB
public class ImprovedMergeSort implements SortUtil.Sort { -s`/5kD
-/:N&6eRb
private static final int THRESHOLD = 10; S}Wj+H;
qJ=4HlLno
/* :- B,Q3d
* (non-Javadoc) zY\pZG
* 1ID0'j$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7mipj]
*/ ]sBSLEie
'
public void sort(int[] data) { c:0nOP
int[] temp=new int[data.length]; ) -+u8#
mergeSort(data,temp,0,data.length-1); {_0m0
8
} H#IJ&w|
(0jT#&#
private void mergeSort(int[] data, int[] temp, int l, int r) { 8<UD#i@:C
int i, j, k; l+BJh1^
int mid = (l + r) / 2; iUl5yq
if (l == r) Q}p+/-U\
return; t|Cp<k]B
if ((mid - l) >= THRESHOLD) uGIA4CUm
mergeSort(data, temp, l, mid); 1!,xB]v1Ri
else %N#8D<ULd
insertSort(data, l, mid - l + 1); Ek|#P{!
if ((r - mid) > THRESHOLD) >p4#AfGF
mergeSort(data, temp, mid + 1, r); M>+FIb(
else &kKopJH
insertSort(data, mid + 1, r - mid); x8i;uH\8
BsV2Q`(gT
for (i = l; i <= mid; i++) { km1{Oh
temp = data; .LDK+c
} tbHU(#~
for (j = 1; j <= r - mid; j++) { ~1xln?Q
temp[r - j + 1] = data[j + mid]; _-aQ.p ?T
} +}H2|vP
int a = temp[l]; QeP8Vl&e:
int b = temp[r]; Ws"eF0,'Z
for (i = l, j = r, k = l; k <= r; k++) { $\kqh$")
if (a < b) { 4fPbwiKj
data[k] = temp[i++]; W]kh?+SZ
a = temp; FB{4& ;
} else { vL"U=Q+/eY
data[k] = temp[j--]; r`5[6)+P
b = temp[j]; +L_!$"I
} %?K1X^52d
} gqR?hZD
} d;`bX+K
InDISl]
/** =Nn&$h l
* @param data t(69gF\"
* @param l <Cc}MDM604
* @param i @vWf-\
*/ nQ4 s
private void insertSort(int[] data, int start, int len) { @!z9.o;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VT1Nd
} M`!\$D
} x&qC~F*QR%
} Jolr"F?
} E)liuu!qI
OYKeu(=L
堆排序: tFLdBv!=:^
|_V i8Ly
package org.rut.util.algorithm.support; zlC|Sp af
j0b?dKd
import org.rut.util.algorithm.SortUtil; SE=3`rVJ
j+0=)Q%I=
/** dIiQ^M
* @author treeroot pp{Za@j
* @since 2006-2-2 jQjtO"\JG
* @version 1.0 u^H: z0
*/ JBa( O-T
public class HeapSort implements SortUtil.Sort{ P?%kV
!yAg!V
KY
/* (non-Javadoc) 5 _X|U*+5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {=Y%=^! s
*/ d<mj=V@bd
public void sort(int[] data) { Bbuy
y
MaxHeap h=new MaxHeap(); HMsTm}d
h.init(data); `OzcL
for(int i=0;i h.remove(); -QR&]U+
System.arraycopy(h.queue,1,data,0,data.length); =Q985)Y&
} U
X)k;h
%_xRS
private static class MaxHeap{ siveqz6h
:G$f)NMK
void init(int[] data){ =!{7ZSu\
this.queue=new int[data.length+1]; FG.MV-G
for(int i=0;i queue[++size]=data; jt|e?1:vF
fixUp(size); $_s"16s
} l
\~w(8g<A
} k(|D0%#b7
C.I.f9s?R
private int size=0; JjarMJr|D
nb}* IExd
private int[] queue; +*"u(7AV
.6Jo1$+
public int get() { V_pWf5F
return queue[1]; P,y*H_@k
} UJ-IK|P.#
(jYHaTL6Y'
public void remove() { S;#S3?G
SortUtil.swap(queue,1,size--); ab?
fixDown(1); Oga/
} {fXD@lhi
file://fixdown {@K>oaZ
private void fixDown(int k) { _l$V|
int j; 39| W(,
while ((j = k << 1) <= size) { Pg[XIfBva
if (j < size %26amp;%26amp; queue[j] j++; ZdbZ^DUR<(
if (queue[k]>queue[j]) file://不用交换 ^`ah\L
break; : vN'eL|#
SortUtil.swap(queue,j,k); *Dx&} "
k = j; b#;%TbDF
} ` #Qlr+X
} !#0Lo->OO
private void fixUp(int k) { d?dZ=]~C
while (k > 1) { UH=pQm^W
int j = k >> 1; M0[7>N_
if (queue[j]>queue[k]) |sd0fTK
break; k<p$BZ
SortUtil.swap(queue,j,k); 4/Ub%t-
k = j; G gmv(!
}
;0G+>&C8
} 0k"n;:KM8
?@"F\Bv<h
} yPG,+uQ$.
wZ7Opm<nt
} _U}pdzX?
A$gP: 1&m
SortUtil: 'p3JYRT$
R5M/Ho 4
package org.rut.util.algorithm; $X1T!i[.X
8Jnb/A}
import org.rut.util.algorithm.support.BubbleSort; ``*iK
import org.rut.util.algorithm.support.HeapSort; S<do.{|p[
import org.rut.util.algorithm.support.ImprovedMergeSort; l-` M
9#
import org.rut.util.algorithm.support.ImprovedQuickSort; 'Rbv3U
import org.rut.util.algorithm.support.InsertSort; +&?#Gdb
import org.rut.util.algorithm.support.MergeSort; ?.1yNO*s
import org.rut.util.algorithm.support.QuickSort; #-S%aeB
import org.rut.util.algorithm.support.SelectionSort; zu8
import org.rut.util.algorithm.support.ShellSort; ykFm$ 0m+I
]PWK^-4P
/** \;&WF1d`ac
* @author treeroot pVgzUu7
* @since 2006-2-2 ;a@%FWc
* @version 1.0 d/I,`
*/ aLZza"W
public class SortUtil { uE {r09^q\
public final static int INSERT = 1; ~qFuS933
public final static int BUBBLE = 2; gaFOm9y.e
public final static int SELECTION = 3; ?N*m2rv
public final static int SHELL = 4; E=
3Ui
public final static int QUICK = 5; -/ 5" Py
public final static int IMPROVED_QUICK = 6; l":\@rm`
public final static int MERGE = 7; M<h2+0(il
public final static int IMPROVED_MERGE = 8; quXL'g
public final static int HEAP = 9; VX+:k.}
f(}?Sp_
public static void sort(int[] data) { NDsF<2A4
sort(data, IMPROVED_QUICK); YN.[KQ(!
} ~mAv)JK
private static String[] name={ @smjXeFo
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" WdQR^'b$
}; A HnXN%m
(^h2'uB
private static Sort[] impl=new Sort[]{ qg_M9xJ
new InsertSort(), zfS0M
new BubbleSort(), 05o +VF;z
new SelectionSort(), mn5y]:;`
new ShellSort(), u!$+1fI>
new QuickSort(), Sv&_LZ-"P
new ImprovedQuickSort(), :SBB3G)|
new MergeSort(), Y.>F fL
new ImprovedMergeSort(), rQE:rVKVh
new HeapSort() eI20)t`j
}; )96tBA%u
pZeJ$3@vk
public static String toString(int algorithm){ 7T[Kjn^{Oj
return name[algorithm-1]; IR_&dWHyc
} {|!>
{
2%!yV~Z
public static void sort(int[] data, int algorithm) { r.WQ6h/eZ5
impl[algorithm-1].sort(data); Fa]|Y
} EA#{N<
^l;N;5L
public static interface Sort { iX]tL:,~i
public void sort(int[] data); LN=6u
} *;E\,,Io
8.`*O
public static void swap(int[] data, int i, int j) { },eV?eGj
int temp = data; t,D7X1W
data = data[j]; f2*e&+LjTP
data[j] = temp; WdtZ{H
} $"e$#<g
} 5t=7-