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。 /i)>|U
4
插入排序: -]Y@_T.C
iHKX#*
package org.rut.util.algorithm.support; *X l,w2@
wl /1~!
import org.rut.util.algorithm.SortUtil; ^m['VK#?
/** MqjdW
* @author treeroot W2BZG(dm
* @since 2006-2-2 ps_q3Cyp
* @version 1.0 $pJw
p{kN
*/ xi[\2g+
public class InsertSort implements SortUtil.Sort{ i]15g@
./35_Vy/O
/* (non-Javadoc) i:60|ngK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3I G<Ot9
*/ j;BlpRD}
public void sort(int[] data) { L*FQ`:lZ
int temp; "1Y'VpKm(~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gC+?5_=<
} CUnBi? Mi
} C`=YGyj=TL
} *RM 3_
>%H(0G#X
} =2@V}
K%ptRj$
冒泡排序: 89x;~D1
\Oxyc}&
package org.rut.util.algorithm.support; 8j)*T9
cH6++r
import org.rut.util.algorithm.SortUtil; +c$:#9$ |
]0XlI;ah
/** m/3,;P.6
* @author treeroot 01~
nC@;
* @since 2006-2-2 ~REfr}0
* @version 1.0 zGNmc7
*/ hp`ZmLq/[
public class BubbleSort implements SortUtil.Sort{ i1ScXKO
d ehK#8
/* (non-Javadoc) ey6ujV7!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y5c[9\'\
*/ k [LV^oEg
public void sort(int[] data) { {1gT{2/~@
int temp; ~ dk9 7Z8
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^YJ%^P
if(data[j] SortUtil.swap(data,j,j-1); wXtp(YwlH
} XZ@|(_Z
} &->ngzg
} )<lQJ#L86a
} 9Dbbk/j|
hd]ts.
} [{`2FR:Cd
[+_>g4M~%
选择排序: ,q;?zcC7
VVDW=G
package org.rut.util.algorithm.support; 74 &q2g{
FA+"t^q
import org.rut.util.algorithm.SortUtil; 5+Ao.3Xn
Nv^byWqu
/** S9{A}+"K
* @author treeroot "8"aYD_
* @since 2006-2-2 AvPPsN0
* @version 1.0 u HW'F(;
*/ +~~2OU L
public class SelectionSort implements SortUtil.Sort { i\O^s ]
lu8*+.V
/* RD46@Q`
* (non-Javadoc) ~GcWG4
* ]T'7+5w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,ga6
*/ p!5'#\^f
public void sort(int[] data) { s_a jA
int temp; C}(@cn `L
for (int i = 0; i < data.length; i++) { [Ky3WppR
int lowIndex = i; s<rV1D
for (int j = data.length - 1; j > i; j--) { lj UdsU w
if (data[j] < data[lowIndex]) { \h_q]
lowIndex = j; RWGf]V]6
} Sg4{IU
} \H~zN]3^
SortUtil.swap(data,i,lowIndex); Nke!!A}\|
} J/O{x
} r fzNw
U2l3E*O
} *yaS^k\
'&'m#H*:
Shell排序: *ziR &Fr!
</WeB3#6
package org.rut.util.algorithm.support; 'E+"N'M|
y)U?.@
import org.rut.util.algorithm.SortUtil; DU0/if9.
l?=\9y
/** TS#[[^!S
* @author treeroot OQ7 `n<I<)
* @since 2006-2-2 I# &r5Q
* @version 1.0 K)BQ0v.:[
*/ i'7+
?YL
public class ShellSort implements SortUtil.Sort{ #{vC =m73
dH!z<~
/* (non-Javadoc) W*t]
d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bh<;px-
*/ 'gvR?[!t
public void sort(int[] data) { Zym6btc
for(int i=data.length/2;i>2;i/=2){ XTo7fbW*
for(int j=0;j insertSort(data,j,i); |Ha#2pt{bc
} o`,~#P|
} iN[x
*A|h
insertSort(data,0,1); w y|^=#k
} BtZ]~S}v
PDuc;RG
/** !:^q_q4
* @param data F5Z,Jmi^M
* @param j 6e%@uB}$
* @param i 80Dn!9j*
*/ E4L?4>V@\
private void insertSort(int[] data, int start, int inc) { U}RBgPX!
int temp; Wn'a'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ch8a
} :<t=??4m
} s*ZE`/SM3
} >ESVHPj]
;:fW]5"R
} S^eem_C
z# ^fS
|
快速排序: (?fU l$q\
YV<y-,Io
package org.rut.util.algorithm.support; 6OAs%QZ
LE\=Y;%
import org.rut.util.algorithm.SortUtil; .|Huzk+
X.eOw>.
/** OG/b5U
* @author treeroot QQM:[1;RT
* @since 2006-2-2 ) *~A|[
* @version 1.0 tWIs
|n
*/ H~a
~'tm
public class QuickSort implements SortUtil.Sort{ JWixY/
s-$Wc)l
/* (non-Javadoc) !6KX^j-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cb|+6m~
*/ ~U0%}Bbh
public void sort(int[] data) { ;xZ+1zmL0
quickSort(data,0,data.length-1); 2R[v*i^S
} %MeAa?G-#
private void quickSort(int[] data,int i,int j){ mn7I# ~
int pivotIndex=(i+j)/2; BNfj0e 5b
file://swap #\0m(v
SortUtil.swap(data,pivotIndex,j); 3iCe5VF
P`biHs8O
int k=partition(data,i-1,j,data[j]); 'J,UKK\5
SortUtil.swap(data,k,j); 2d D"^z{
if((k-i)>1) quickSort(data,i,k-1); n<.7tr0f\
if((j-k)>1) quickSort(data,k+1,j); Qr.{_M
(Q*q#U
} JQV%W+-@
/** y, l[v39
* @param data \@gV$+{9
* @param i j3Od7bBS]
* @param j @t%da^-HS"
* @return uf6egm5]
*/ :Y99L)+=/
private int partition(int[] data, int l, int r,int pivot) { y%TqH\RKv
do{ gP%<<yl
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C'JI%HnQ
SortUtil.swap(data,l,r); <Wn~s=
} 1)X|?ZD]F
while(l SortUtil.swap(data,l,r); /5,6{R9
return l; q8{Bx03m6
} u$\.aWol
ug9Ja)1|
} ~c EN=(Z~r
k79OMf<v
改进后的快速排序: |
.jWz.c
G4|C227EO
package org.rut.util.algorithm.support; 3r~8:F"g
S Qmn*CW
import org.rut.util.algorithm.SortUtil; ;]LQ}^MP(
)z7CT|h7S
/** Ku[q#_7
* @author treeroot VzT*^PFBg
* @since 2006-2-2 zA#pgX[#
* @version 1.0 $O |Xq7dp
*/ Hk}P
public class ImprovedQuickSort implements SortUtil.Sort { v[$e{ Dz(
[vu;B4^"
private static int MAX_STACK_SIZE=4096; J_)F/S!T
private static int THRESHOLD=10; dpW`e>o
/* (non-Javadoc) y;az&T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {MtJP:8Jp
*/ jZ~girA
public void sort(int[] data) { w"v96%"Y
int[] stack=new int[MAX_STACK_SIZE]; o "r
dw6ysOR@
int top=-1; t ]BG)]
int pivot; 6PsT])*>DE
int pivotIndex,l,r; Ox)<"8M
~=yU%5 s@
stack[++top]=0; *$cx7yJ
stack[++top]=data.length-1; Ja1 `S+
m+M^we*R
while(top>0){ @kSfF[4H
int j=stack[top--]; ftn10TO *
int i=stack[top--]; 4l0>['K&{
Da<`|
l
pivotIndex=(i+j)/2; "C}<umJ'
pivot=data[pivotIndex]; o"qxR'V
F*G]Na@6D
SortUtil.swap(data,pivotIndex,j); whN<{AG
6(7
56
file://partition \6AM?}v
l=i-1; ?jmL4V2-f
r=j; <mJ8~
do{ SEnr"}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &am<_Tn*3
SortUtil.swap(data,l,r); /{j._4c
} l>|scs;TI
while(l SortUtil.swap(data,l,r); y=Eb->a){
SortUtil.swap(data,l,j); ~"*W;|)
otaRA
if((l-i)>THRESHOLD){ A#`$#CO
stack[++top]=i; bRggt6$z
stack[++top]=l-1; xm=Gt$>.o
} 8i^
./P
if((j-l)>THRESHOLD){ $J4)z&%dr
stack[++top]=l+1; uju'Bs7
stack[++top]=j; ;pL!cG@
} uNEl]Q]<e]
Y{~`g(~9_A
} jBEW("4R
file://new InsertSort().sort(data); M4|ION
insertSort(data); CY=lN5!J
} pSAtn
/** N=U`BhL_
* @param data le_aIbB"P
*/ W$7H "tg
private void insertSort(int[] data) { ]D~Ibv{Y
int temp; IPn!iv)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e2fv%
} q`8
5-
} eKuF7Oo
} 0i5S=L`j
%Cj_z
} *N: $,xf
eU)QoVt
归并排序: 'cu14m_
$KT)Kz8tF
package org.rut.util.algorithm.support; $v_&jE
h=6D=6c
import org.rut.util.algorithm.SortUtil; |bQF.n_
*qYw
/** LB({,0mcX
* @author treeroot ;,uATd|
* @since 2006-2-2 E 6MeM'sx
* @version 1.0 d"E3ypPK
*/ sZ7,7E|_
public class MergeSort implements SortUtil.Sort{ '
-9=>
]1zud
/* (non-Javadoc) y8C8~ -&OK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~K5A$s2
*/ IMM+g]#e
public void sort(int[] data) { #=0 BjW*
int[] temp=new int[data.length]; |Vlx:
mergeSort(data,temp,0,data.length-1); raSga'uT;
} G=Lg5`3;,
k{S8q?Gc
private void mergeSort(int[] data,int[] temp,int l,int r){ +Q"~2_q5/;
int mid=(l+r)/2; T.')XKP)1N
if(l==r) return ; Q`.q,T8I
mergeSort(data,temp,l,mid); KJS-{ed
mergeSort(data,temp,mid+1,r); >z/.8!#Q
for(int i=l;i<=r;i++){ br TP}A
temp=data; j+dQI_']x
} {98e_z w
int i1=l; 8D@J d
int i2=mid+1; bYpeI(zK
for(int cur=l;cur<=r;cur++){ L^Q;M,.c;
if(i1==mid+1) PJ?C[+&
data[cur]=temp[i2++]; TF!v ,cX
else if(i2>r) f[R~oc5P0
data[cur]=temp[i1++]; 5D<ZtsXE
else if(temp[i1] data[cur]=temp[i1++]; zkqn>
else -I6t ^$HA
data[cur]=temp[i2++]; _Yp~Oj
} |&
jrU-(
} z$d<ep{6
.9r85
} h6?Z
%\|{_]h}y
改进后的归并排序: f)a0 !U 44
Rrl
package org.rut.util.algorithm.support; AOKC1iD%Y
D *PEIsV
import org.rut.util.algorithm.SortUtil; RP+)sCh
uM,Ps}
/** ZvT>A#R;l~
* @author treeroot P,3w
b
* @since 2006-2-2 goF87^M
* @version 1.0 L@zhbWY
*/ dkDPze9l
public class ImprovedMergeSort implements SortUtil.Sort { `F&~SU,
bX:h"6{=R
private static final int THRESHOLD = 10; 6@8z3JW.A
z5~W
>r
/* FY^Nn
* (non-Javadoc) dVHbIx
* I_->vC|>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kcg\f@d$
*/ v*dw'i
public void sort(int[] data) { s/C'f4
int[] temp=new int[data.length]; <LXx_{=:
mergeSort(data,temp,0,data.length-1); NW 2`)e'
} m_Q&zp["
c>>.>^5
private void mergeSort(int[] data, int[] temp, int l, int r) { GQCdB>
int i, j, k; #)]t4wa_W
int mid = (l + r) / 2; T{f$S
if (l == r) +`{OOp=
return; fG$LqzyqlK
if ((mid - l) >= THRESHOLD) (1GU
mergeSort(data, temp, l, mid); gM=:80
else DU]KD%kl
insertSort(data, l, mid - l + 1); 4G&dBH
if ((r - mid) > THRESHOLD) c>^(=52Q
mergeSort(data, temp, mid + 1, r); vxI9|i
else i 61k
insertSort(data, mid + 1, r - mid); ,R<9yEWm
{$yju _[
for (i = l; i <= mid; i++) { &g^*ep~|#
temp = data; +FqE fY4j
} m}=E$zPbO
for (j = 1; j <= r - mid; j++) { y*-_
temp[r - j + 1] = data[j + mid]; 2@GizT*mA
} |b.xG_-s1
int a = temp[l]; -,p=;t#(
int b = temp[r]; <EN9s
for (i = l, j = r, k = l; k <= r; k++) { {A:uy
if (a < b) { !%('8-x%
data[k] = temp[i++]; hp9U
a = temp; DHw)]WB M
} else { 1nskf*Z
data[k] = temp[j--]; GjHR.p?-
b = temp[j]; u YT$$'S
} (A6~mi r!
} l&qCgw
} 9N}\>L)_
uij^tN%
/** Kmx^\vDs
* @param data Y`bTf@EP>
* @param l ~S\L(B(
* @param i "W(Ae="60
*/ k_0@,b3
private void insertSort(int[] data, int start, int len) { ~:bdS 4w
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }A24;'}
} \?^2}K/
} }a6t <m`V
} F1L[3D^-
} ~RuX2u-2&u
NEri{qxm
堆排序: E3wL n/<
!ou#g5Q@z
package org.rut.util.algorithm.support; A:r?#7 Ma
J}X{8Ds9
import org.rut.util.algorithm.SortUtil; 6-
i.*!I 8
gtA34iw
/** +ZOiL[rS
* @author treeroot 3Hom0g,V4
* @since 2006-2-2 qMNWw\k
* @version 1.0 :V)jm`)#+
*/ ;X,u
public class HeapSort implements SortUtil.Sort{ Z,38eQpM
ns8s2kYcm
/* (non-Javadoc) P#~B@d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FoyYWj?,R
*/ EE!}$qOR
public void sort(int[] data) { EX`P(=zD
MaxHeap h=new MaxHeap(); `R[ZY!=+
h.init(data); lZ\8W^
for(int i=0;i h.remove(); oY18a*_>M1
System.arraycopy(h.queue,1,data,0,data.length); Z nc(Q
} ijF_
KP'
a[O6xA%
private static class MaxHeap{ ?0VR2Yb${b
7w/IHM L
void init(int[] data){ %T{]l;5
this.queue=new int[data.length+1]; I9*cEZ!l=e
for(int i=0;i queue[++size]=data; fSuykbZ
fixUp(size); @Iv;y*y
} DYD<?._I
} `a& kD|Yh
\n)',4mY
private int size=0; &r5q,l&@n
+T+@g8S
private int[] queue; @!#e\tx
n{;j
public int get() { KQdIG9O+6
return queue[1]; e`D}[G#
} /8cRPB.
o%$.8)B9F
public void remove() { ,BU;i%G&s
SortUtil.swap(queue,1,size--); SiratkP9n7
fixDown(1); ,^#Jw`w^
} NK_|h%
file://fixdown \c=I!<9
private void fixDown(int k) { V2YK T,5
int j; :]^e-p!z
while ((j = k << 1) <= size) { k9^Hmhjw
if (j < size %26amp;%26amp; queue[j] j++; 7RAB"T;?Q
if (queue[k]>queue[j]) file://不用交换 |\5^ub,m
break; E7fx4kV
SortUtil.swap(queue,j,k); ~Iu! B
Y
k = j; *T|B'80
} `2s!%/
} 1uw#;3<L
private void fixUp(int k) { La26"C"X
while (k > 1) { +L(amq;S
int j = k >> 1; [VCC+_
if (queue[j]>queue[k]) a&y^Ps6=
break; D6sw"V#
SortUtil.swap(queue,j,k); ^.SYAwL
k = j; o`?rj!\
} tT$OnZu&
} +]db-
2ej7Ql_@c
} qS!r<'F3dP
5Wt){rG0Z
} yzA05 npTl
XH:*J+$O
SortUtil: R$awg SE
S:\i
M:
package org.rut.util.algorithm; JE?p'77C
h6
\P&Z
import org.rut.util.algorithm.support.BubbleSort; )
nfoDG#O
import org.rut.util.algorithm.support.HeapSort; hGR j
import org.rut.util.algorithm.support.ImprovedMergeSort; v0^9"V:y
import org.rut.util.algorithm.support.ImprovedQuickSort; N0U/u'J!g
import org.rut.util.algorithm.support.InsertSort; S)rZE*~2
import org.rut.util.algorithm.support.MergeSort; E-MPFL
import org.rut.util.algorithm.support.QuickSort; |m19fg3u
import org.rut.util.algorithm.support.SelectionSort; ;|N:FG
import org.rut.util.algorithm.support.ShellSort; h$>F}n
j
[}X|&`'i
/** G4&s_M$
* @author treeroot 3P>gDQP
* @since 2006-2-2 5/48w-fnZ
* @version 1.0 A5?"
*/ q^@*{H
public class SortUtil {
gwZ<$6
public final static int INSERT = 1; &dtk&P{
public final static int BUBBLE = 2; aD/Rr3v>
public final static int SELECTION = 3; ;?6vKpj;
public final static int SHELL = 4; 5:Qz
public final static int QUICK = 5; gU9{~-9}
public final static int IMPROVED_QUICK = 6; r@r%qkh(.@
public final static int MERGE = 7; kH!Z|Ps?R
public final static int IMPROVED_MERGE = 8; p:,Y6[gMo
public final static int HEAP = 9; vG&>-Z
:dmE/Tq
public static void sort(int[] data) { k<1yv$/mW
sort(data, IMPROVED_QUICK); ,m=F
H?5
} |J`EM7qMK
private static String[] name={ ]`o5eByo
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \}-4(Xdaq
}; +,Dc0VC?
#kg`rrFr
private static Sort[] impl=new Sort[]{ 1CtUf7 `/Q
new InsertSort(), e r"
w{
new BubbleSort(), fBO/0uW
new SelectionSort(), mDD.D3RS
new ShellSort(), 6*8Wtq
new QuickSort(), gW,[X(
new ImprovedQuickSort(), \j)Evjw
new MergeSort(), #mH@ /6,#[
new ImprovedMergeSort(), &K[*vyD
new HeapSort() 337.' |ZE
}; 3WV(Ok
!U`&a=k
public static String toString(int algorithm){ K2m>D=w
return name[algorithm-1]; M8^ID #
} ,"qCz[aDN1
EIi<g2pM(
public static void sort(int[] data, int algorithm) { gv!8' DKn
impl[algorithm-1].sort(data); [hJ1]RW8
} \u=d`}E
;i{B,!#
public static interface Sort { , 5'o>Y
public void sort(int[] data); M!mL/*G@YE
} J,a&"eOZ
68%aDs
public static void swap(int[] data, int i, int j) { @uSO~.7
int temp = data; ^[ae
)}
data = data[j];
gqaM<!]
data[j] = temp; HC0juT OiO
} sA0Ho6
} UhB+c