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。 D.,~I^W
插入排序: +GlG.6
EMw
biGV
package org.rut.util.algorithm.support; &d 6
+"3K)9H
import org.rut.util.algorithm.SortUtil; %Hpz^<`
/** W~?mr!`
* @author treeroot K{__rO
* @since 2006-2-2 +8 }p-<a
* @version 1.0 (;2]`D [x
*/ +`+r\*C5
public class InsertSort implements SortUtil.Sort{ 87OX:6
`y*o-St3
/* (non-Javadoc) ZJ'FZ8Sx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _8s1Wh G
*/ $@eFSA5k,7
public void sort(int[] data) { ^2eH0O!
int temp; Yg!xlrxA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c.Do b?5
} K)nn;j=
} I`[s(C>3@
} F(;95TB
8]A`WDO3
} 9~6~[z
i3<ZFR
冒泡排序: m:C |R-IL
vx4Jk]h+=L
package org.rut.util.algorithm.support; :M\3.7q
I7HP~v~
import org.rut.util.algorithm.SortUtil; :eL
ja*
+*Pj,+;W
/** ?T7ndXX
* @author treeroot 822 jZ
sb
* @since 2006-2-2 jbs)]fqC;
* @version 1.0 OO-b*\QW
*/ -n]E\"
public class BubbleSort implements SortUtil.Sort{ _-nIy*', =
?gl[=N V
/* (non-Javadoc) 1'YksuYx6f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l3;MjNB^V
*/ ky{-NrK
public void sort(int[] data) { DtOL=m]s
int temp; w<G'gi]
for(int i=0;i for(int j=data.length-1;j>i;j--){
3vRBK?Q.y
if(data[j] SortUtil.swap(data,j,j-1); t'DYT"3
} rRd8W}B
} "Rq)%o$Z
} hG
qZB
} tN&_f==e
&?#!%Ds
} z|WDqB%/I
|<w
Z;d
选择排序: .>+jtp}
f}?q
package org.rut.util.algorithm.support; A"no!AN
JTfG^Nv>K
import org.rut.util.algorithm.SortUtil; dx[kG
6dQ]=];
/** )+v'@]r
* @author treeroot kz?m `~1
* @since 2006-2-2 "&N1$$
* @version 1.0 "|%'/p
*/ YMIX|bj6Y
public class SelectionSort implements SortUtil.Sort { 2[TssJQ
:P:OQ[$
/* mIkc+X
* (non-Javadoc) vGI?X#w3
*
D?@e,e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1,(uRS#bk
*/ _do(
public void sort(int[] data) { <s(<ax30
int temp; ,]8$QFf
for (int i = 0; i < data.length; i++) { Q(7M_2e7
int lowIndex = i; )ZQML0}P;
for (int j = data.length - 1; j > i; j--) { D$/*Z5Z)]
if (data[j] < data[lowIndex]) { D_-<V,3t
lowIndex = j; A Z& ]@Ao
} 5Q.z#]Lg
} ,`;Dre
SortUtil.swap(data,i,lowIndex); O*y@4AR"S
} dRPX`%J
} &~a/Upz0]_
6/&aBE=
} /6d:l>4
0
|Y'@&
Shell排序: ;OY*`(Id
N77EM
package org.rut.util.algorithm.support; $][$ e
QP0[
import org.rut.util.algorithm.SortUtil; n
2m!a0;
+Rb0:r>kU
/** aIW W[xZ
* @author treeroot v#o<.
Ig
* @since 2006-2-2 7(<z= F
* @version 1.0 _
ZC[h~9H
*/ a~"<lzu|$
public class ShellSort implements SortUtil.Sort{ _M9-n
7l|D!`BS
/* (non-Javadoc) v|K<3@J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2[Q/|D}}|
*/ L2m~ GnP|?
public void sort(int[] data) { u=9)A9
for(int i=data.length/2;i>2;i/=2){ a<ztA:xt|1
for(int j=0;j insertSort(data,j,i); +\@WOs
} ;yVT:qd
%
} Ij}k>qO/2
insertSort(data,0,1); ~Y /55uC
} 1E|~;wo\
rP7~R
/** t_Rpeav
* @param data Bq) aA)gF
* @param j d:1TSJff%/
* @param i Nw=mSW^E
*/ s0bWg$
private void insertSort(int[] data, int start, int inc) { yqKERdm
int temp; *cnxp-)ub
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UJ8V%0
} 1} h''p
} ~Q/G_^U:
} r7=r~3)
g4fe(.?c,
} "G,$Sqi@
rS/}!|uAu
快速排序: >:yU bo)
4:S?m(ah/
package org.rut.util.algorithm.support; t,m},c(B:
gNoQ[xFx32
import org.rut.util.algorithm.SortUtil; F"*.Qq
dDoKmuY>5
/** #Z.2g].
* @author treeroot !p#+I=
* @since 2006-2-2 /"*eMe!=
* @version 1.0 _>"f&nbO
*/ A]k-bX= s
public class QuickSort implements SortUtil.Sort{ IU*w'a
~0ku,P#D
/* (non-Javadoc) ;`P}\Q{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d:V6.7>,
*/ /o)o7$6Q
public void sort(int[] data) { fX[6
{
quickSort(data,0,data.length-1); Z?}yPsOb
} t@1bu$y
private void quickSort(int[] data,int i,int j){ nC>'kgRt
int pivotIndex=(i+j)/2; #lHA<jI
file://swap b\^q9fy
SortUtil.swap(data,pivotIndex,j); s wIJmA
0~0OQ/>7
int k=partition(data,i-1,j,data[j]); Yo$
xz
SortUtil.swap(data,k,j); fqcFfz6?x
if((k-i)>1) quickSort(data,i,k-1); ]sf1+3
if((j-k)>1) quickSort(data,k+1,j); aHvsgp]
3.^Tm+ C
} '3MCb
/** B}YpIb]d
* @param data m2o)/:
* @param i |`50Tf\J
* @param j u^!c:RfE?
* @return 861!p%y5
*/ _:Jra
private int partition(int[] data, int l, int r,int pivot) { ^`&?"yj<z
do{ Cm5:_K`;]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R^*h|7)E
SortUtil.swap(data,l,r); Z1t?+v+Ro*
} dY'mY ~Tv
while(l SortUtil.swap(data,l,r); t@(`24
return l; Mx<?c
} KS6H`Mm}/
UD@u hL
} c+^#(OB
_CDl9pP36#
改进后的快速排序: @Pt,N
qj:
=oPc\VYW
package org.rut.util.algorithm.support; IV5B5Q'D
jbU=D:|
import org.rut.util.algorithm.SortUtil; >P/Nb]C
1 ynjDin<
/** T1&^IO-F7$
* @author treeroot 3Wl,T5}{
* @since 2006-2-2 ]$VYzE2e
* @version 1.0 uuA
q\YZy/
*/ :172I1|7
public class ImprovedQuickSort implements SortUtil.Sort { UJWkG^?
8.'[>VzBL
private static int MAX_STACK_SIZE=4096; q|23l1PI
private static int THRESHOLD=10; 1JIo,7
/* (non-Javadoc) Z.]=u(=a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WE hDep:
*/ wCwJ#-z.=
public void sort(int[] data) { C25r3bj
int[] stack=new int[MAX_STACK_SIZE]; { eU_
B)bq@jM
int top=-1; W=9Zl(2C
int pivot; ]^j'2nJv0
int pivotIndex,l,r; \ tK{!v+
V*bX>D/
stack[++top]=0; GT)63|
stack[++top]=data.length-1; 7 q%|-`#
bJz}\[z
while(top>0){ O"<W<l7Q
int j=stack[top--]; ,>^6ztM
int i=stack[top--]; <r{M(yZ?@
\VTNXEw*G
pivotIndex=(i+j)/2; Q--VZqn
pivot=data[pivotIndex]; #00k7y>OyD
P9\!JH!
SortUtil.swap(data,pivotIndex,j); .Kn)sD1
D]s8w
file://partition x'.OLXx>
l=i-1; z`^DQ8+\j
r=j; ?)ROQ1-#@
do{ g@<E0
q&`$
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;0R>D g
SortUtil.swap(data,l,r); krw_1Mm
} c:R`]4o
while(l SortUtil.swap(data,l,r); Dj~]]
SortUtil.swap(data,l,j); Y~</vz+H
y$]gmg
if((l-i)>THRESHOLD){ 4a&*?=GG
stack[++top]=i; TaZw_)4c
stack[++top]=l-1; XYOPX>$T
} qJQ!e
if((j-l)>THRESHOLD){ BDeX5/`U#
stack[++top]=l+1; #s!q(Rc
stack[++top]=j; q Z,7q
} \1AtBc&
epWO}@
b a
} x*EzX4$x
file://new InsertSort().sort(data); RO([R=.`/
insertSort(data); Z]1=nSv
} eu]t.Co[X
/** Nf#8V|
* @param data (\Iz(N["G
*/ I-fjqo3
private void insertSort(int[] data) { RW!_ZzZ
int temp; #9{9T"ed
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9'qU4I
} YSvZ7G(m>
} '%u7XuU-]
} C;T:'Uws
=*AAXNs@3
} y}fF<qih'>
\uumNpB*n
归并排序: f?ImQYqP
nZfU:N
package org.rut.util.algorithm.support; <*g!R!
b;N[_2
import org.rut.util.algorithm.SortUtil; k
k&8:;Vj
5,>Of~YN
/** N34.Bt
* @author treeroot #SHmAB
* @since 2006-2-2 Xm|Uz`A;
* @version 1.0 f1a >C
*/ 3H_mR
j9th
public class MergeSort implements SortUtil.Sort{ y;!q E~!3
`Jvy~T
/* (non-Javadoc) W;Rx(o>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =5UT'3p>
*/ LIo3a38n?y
public void sort(int[] data) { hdw-ge m{?
int[] temp=new int[data.length]; (6aSDx
Sc
mergeSort(data,temp,0,data.length-1); CDy *8<-&
} /D]V3|@E
X" hoDg
private void mergeSort(int[] data,int[] temp,int l,int r){ sG/mmZHYzr
int mid=(l+r)/2; 9(9+h]h+3
if(l==r) return ; wIrjWU2
mergeSort(data,temp,l,mid); Vr1Wr%
mergeSort(data,temp,mid+1,r); $a.!X8sHB.
for(int i=l;i<=r;i++){ GwOn&EpY!
temp=data; BEQ$p)
h
} 8sDbvVh1F
int i1=l; 23lLoyN
int i2=mid+1; x}g5
for(int cur=l;cur<=r;cur++){ ECO4ut.d
if(i1==mid+1) F/"Q0% (m
data[cur]=temp[i2++]; "Ih>>|r
else if(i2>r) V)$y
data[cur]=temp[i1++]; NZJ:@J=-
else if(temp[i1] data[cur]=temp[i1++]; jm-J_o;}z6
else QFP3S(
data[cur]=temp[i2++];
c]#+W@$
} `5[$ 8;
} B? Vr9H 7n
S~dD ;R
} fpjy[$8
#Ub"Ii
改进后的归并排序: 6m.ChlO/
"[PxLq5
package org.rut.util.algorithm.support; Zu4|1W
L|y4u;-Q
import org.rut.util.algorithm.SortUtil; F{:ZHCm
pjC2jlwm*
/** b7
pD#v
* @author treeroot X5@SLkJ-`
* @since 2006-2-2 >-2eZ(n)"
* @version 1.0 e}x}Fj</(
*/ *K9I+t"g
public class ImprovedMergeSort implements SortUtil.Sort { dLtSa\2Hn
+E8Itb,
private static final int THRESHOLD = 10; 4"OUmh9LHB
E+Jh4$x{
/* 4G:I VK9
* (non-Javadoc) ~?V+^<P
* ?_\t7f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >^1|Mg/!>
*/ hSxlj7Eo^T
public void sort(int[] data) { R W=<EF&
int[] temp=new int[data.length]; 6GxQ<
mergeSort(data,temp,0,data.length-1);
y$n7'W6
} \m.ap+dFa
ISQC{K']J
private void mergeSort(int[] data, int[] temp, int l, int r) { Cm~h\+"
int i, j, k; \9U4V>p
int mid = (l + r) / 2; b#**`Y
if (l == r) =h?Q.vad
return; .Z,3:3,]
if ((mid - l) >= THRESHOLD) 5yvaY
"B
mergeSort(data, temp, l, mid); FmfPi
.;1
else 2?",2x09
insertSort(data, l, mid - l + 1); 5ryzAB O\2
if ((r - mid) > THRESHOLD) }pE8G#O&
mergeSort(data, temp, mid + 1, r); \htL\m^$9
else K!X>k
insertSort(data, mid + 1, r - mid); rAc
Yt9M#
sU
{'
for (i = l; i <= mid; i++) { %5N;SRtv
temp = data; @WppiZ$
} R&z)
for (j = 1; j <= r - mid; j++) { qz|`\^
temp[r - j + 1] = data[j + mid]; )+^1QL
} .g CC$
int a = temp[l]; x^UE4$oo
int b = temp[r]; E$$pO.\
for (i = l, j = r, k = l; k <= r; k++) { Mo+mO&B
if (a < b) { NDG3mCl
data[k] = temp[i++]; tMN^"sjf*
a = temp; ~,
hPi
} else { 0D[D;MW
data[k] = temp[j--]; $rB20!
b = temp[j]; |E\0Rv{H3
} aZ$$a+
} 3pxm0|
} sZ,MN F8i
_ n.2'
/** LPjsR=xi
* @param data DVu_KT[H d
* @param l +O<0q"E
* @param i ~R`Rj*Q2Y
*/
G P"(+5
private void insertSort(int[] data, int start, int len) { 7g-#v'.N
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pRsYA7Ti
} <Sxsmf0"
} >".,=u'
} ]J^9iDTTA
} .s4hFB^n
U] 2fV|Hn
堆排序: 9aLS%-x!+
&G5=?ub
package org.rut.util.algorithm.support; N-x~\B!
{VWUK`3
import org.rut.util.algorithm.SortUtil; )I80Nq
#A8d@]Ps
/** Cdjh/+!f
* @author treeroot fvajNP
* @since 2006-2-2 V?g@pnN"
* @version 1.0 >Z#=<
*/ `aFy2x`3
public class HeapSort implements SortUtil.Sort{ <1(:W[M
j @c
fR
/* (non-Javadoc) M@a?j<7P,m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zu<8%
*/ 1Aq*|JSk(
public void sort(int[] data) { )7mX]@
MaxHeap h=new MaxHeap(); y(pHt
h.init(data); r7tN(2;5
for(int i=0;i h.remove(); SrV+Ox
System.arraycopy(h.queue,1,data,0,data.length); ;H#'9p ,2
} lFWN[`H
P) fv:a
private static class MaxHeap{ b\zRwp
>uN`q1?l'
void init(int[] data){ &a?&G'?
this.queue=new int[data.length+1]; &"dT/5}6
for(int i=0;i queue[++size]=data; KKm0@Y
fixUp(size); CroI,=a&,
} gf]biE"k
} !GkwbHr+p
<!.'"*2
private int size=0; -b>"2B?
k^q}F%UV
private int[] queue; bl|k6{A
z/*nY?
public int get() { Si<9Oh
return queue[1]; ^7`"wj14
} 0_HdjK
2e}${NZN
public void remove() { -GkNA"2M[
SortUtil.swap(queue,1,size--); ~L!*p0dS^
fixDown(1); 7@g8nv(p
} ,63hO.4M
file://fixdown i/rdPbq
private void fixDown(int k) { IxT[1$e
int j; ; Xy\7tx
while ((j = k << 1) <= size) { uLYz!E+E
if (j < size %26amp;%26amp; queue[j] j++; e{edI{g
if (queue[k]>queue[j]) file://不用交换 W1X\!Y
break; `nccRy<l
SortUtil.swap(queue,j,k); a^qLyF&F
k = j; \Q"o\:IoIT
} [>"bL$tlo*
} 6JWCB9$4
private void fixUp(int k) { k%\_UYa
while (k > 1) { **rA/*Oc
int j = k >> 1; `"v5bk
if (queue[j]>queue[k]) .BGM1ph}~
break; @;}bBHQz{p
SortUtil.swap(queue,j,k); ^(I4Do~}
k = j; mrDIt4$D
} P&3'N~k-
} 96a A2s1
:>to?~Z1
} &6A'}9Ch
yH>`Kbf T
} i<|5~tm
@psyO]D=j%
SortUtil: [B9'/:
NLFSw
package org.rut.util.algorithm; 0bxB@(NO
3X$)cZQ
import org.rut.util.algorithm.support.BubbleSort; .$+]N[-=
import org.rut.util.algorithm.support.HeapSort; ZCi~4&Z#
import org.rut.util.algorithm.support.ImprovedMergeSort; I]P'wav~O
import org.rut.util.algorithm.support.ImprovedQuickSort; E6n3[Z
import org.rut.util.algorithm.support.InsertSort; kVs'>H@FY
import org.rut.util.algorithm.support.MergeSort; =>Y b~r71
import org.rut.util.algorithm.support.QuickSort; &LE,.Q34
import org.rut.util.algorithm.support.SelectionSort; ^yUel.N5"
import org.rut.util.algorithm.support.ShellSort; l%*KBME
PL/as3O^A
/** .Gv9RKgd~
* @author treeroot E"5
zT1d
* @since 2006-2-2 #q1Qa_LXc
* @version 1.0 U'S}7gya
*/ ]Q=D'1MM
public class SortUtil { k"|4
LPv[
public final static int INSERT = 1; '3Yci(t+
public final static int BUBBLE = 2; FjIS:9^)t5
public final static int SELECTION = 3; gK/mm\K@
public final static int SHELL = 4; D<$~bUkxR
public final static int QUICK = 5; <A&mc,kj
public final static int IMPROVED_QUICK = 6; i"%X[(U7
public final static int MERGE = 7; /_E8'qlx
public final static int IMPROVED_MERGE = 8; LZm6\x
public final static int HEAP = 9; @sJ[<V
Pw/Z;N;:V
public static void sort(int[] data) { +MPM^ m
sort(data, IMPROVED_QUICK); zVe@`gc
} W
HO;;j
private static String[] name={ }l&Uh&B`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Vh^fbv`?
}; J&}/Xw)
)n 1b
private static Sort[] impl=new Sort[]{ Ddde,WJA
new InsertSort(), ~H/|J^ J
new BubbleSort(), yiGq?WA7
new SelectionSort(), naCPSsei
new ShellSort(), 2bxkZS]
new QuickSort(), 'EJ8)2
new ImprovedQuickSort(),
O[f* !
new MergeSort(), Ed ,`1+
new ImprovedMergeSort(), zu&5[XL
new HeapSort() (Da/$S.
}; / <WB%O
\|nF55W [
public static String toString(int algorithm){ 1"3|6&=
return name[algorithm-1]; ^RytBwzKM
} Rk.YnA_J6
o^;$-O!/
public static void sort(int[] data, int algorithm) { 6H67$?jMyJ
impl[algorithm-1].sort(data); <jF]SN
} cc7*O
^D\1F$AjC
public static interface Sort { xc[@lr
public void sort(int[] data); YLVV9(
} ]&\HAmOQS
4k_&Q?1
public static void swap(int[] data, int i, int j) { zQ9"i
int temp = data; $j:$
`
data = data[j]; $u_0"sUV
data[j] = temp; Qk<W(
} 3}=r.\]U
} :S}!i?n