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。 U=sh[W
插入排序: I &* _,d
YJxw 'U
>P
package org.rut.util.algorithm.support; g/=K.
j<%])
import org.rut.util.algorithm.SortUtil; Fyyg`J
/** HmK*b Z
* @author treeroot %=j3jj[
* @since 2006-2-2 +D#Z n!P
* @version 1.0 8&"(WuZ@
*/ zq5'i!s !0
public class InsertSort implements SortUtil.Sort{ z<gu00U7
t4Z
/* (non-Javadoc) mmw^{MK!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q
'(ihUq*k
*/ =G~~?>=@2
public void sort(int[] data) { !A8^Xmz"
int temp; (wRBd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =\ )IaZ
} #0b&^QL
} b4Y8N"hL%
} pO<-.,
6) \dBOz
} mxwdugr`
2WM\elnA
冒泡排序: u!N{y,7W)
KRsAv^']
package org.rut.util.algorithm.support; iNCX:Y
*0Gz)'
import org.rut.util.algorithm.SortUtil; 0h$GI"dR
i54md$Q^
/** ^C&+
~+
* @author treeroot p<WFqLe(":
* @since 2006-2-2 7=4 A;Ybq
* @version 1.0 VVWM9x
*/ RaSz>-3d
public class BubbleSort implements SortUtil.Sort{ e2$]g>
:<#`_K~'
/* (non-Javadoc) gM;}#>6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XM
Vq-8B0
*/ 09M;}4ev&7
public void sort(int[] data) { o7&4G$FX~
int temp; Jeqxspn
T
for(int i=0;i for(int j=data.length-1;j>i;j--){ %>Xr5<$:&
if(data[j] SortUtil.swap(data,j,j-1); -U2mfW
} /7$mxtB5%L
} 47 u@4"M
} &;H{cv`
} j_?cpm{~ml
FgA//)1
} &A!KJ.
BH0!6Oq
选择排序: jj\ [7 O*
{F*N=pSq
package org.rut.util.algorithm.support; ;Hm'6TR!
Kn+=lCk
import org.rut.util.algorithm.SortUtil; b`cYpcs
\9)[#Ld
/** Mj0Cat=
* @author treeroot p}]q d4j
* @since 2006-2-2 MBk"KF
* @version 1.0 #`GbHxd
*/ }F`beoMAkM
public class SelectionSort implements SortUtil.Sort { <l\N|+7R
@kngI7=E
/* 1TqF6`;+
* (non-Javadoc) 0/]_nd
* !>;w!^U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %|3e.1oX
*/ c|wCKn}`
public void sort(int[] data) { EiV=RdL
int temp; 'zSgCgCHX8
for (int i = 0; i < data.length; i++) { hQh9ok8S
int lowIndex = i; Z$K+
7>^
for (int j = data.length - 1; j > i; j--) { ucg$Ed
if (data[j] < data[lowIndex]) { 1q~LA[6
lowIndex = j; '\p;y7N
} SqB/4P
} ~
}KzJiL
SortUtil.swap(data,i,lowIndex); {ctwo X[;
} .+#Lx;})
} RJJ1
{KaN,td9
} l%"`{
<4F7@q,V
Shell排序: 4E"d /
='/Z;3jt]x
package org.rut.util.algorithm.support; 3\!F\tqD \
oo'w-\2]p
import org.rut.util.algorithm.SortUtil; #-x@"+z
":WYcaSi
/** *d*oS7
* @author treeroot |i)lh_iN
* @since 2006-2-2 l[n@/%2
* @version 1.0 ./maY1>T
*/ C@@$"}%v2
public class ShellSort implements SortUtil.Sort{ &zN@5m$k;
`!c,y~r[
/* (non-Javadoc) 5}<[[}(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %<U{K;
*/ GfsBQY/
public void sort(int[] data) { 4UCwT1
for(int i=data.length/2;i>2;i/=2){ :4;S"p
for(int j=0;j insertSort(data,j,i); Tx+ p8J|Yr
} 4]6 Qr
} `mErF%b
insertSort(data,0,1); 1k>naf~O
} gg8c7d:Q
GJak.,0t
/** *C_[jk@6
* @param data 1)U}i ^
* @param j SMq9j,k
* @param i qc0 B<,x7
*/ atnQC
private void insertSort(int[] data, int start, int inc) { R#0{Wg0O)
int temp; ,+-? Zv 2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k/#M<z
} aW`dFitpM
} a>b8-j=J
} B
T7Id
Qq0O0U
} i| xt f
P0#`anUr1
快速排序: 6GOg_P
$r"A@69^RS
package org.rut.util.algorithm.support; ]18Ucf
xKW"X
import org.rut.util.algorithm.SortUtil; "-U3=+
~L){O*Z
/** TSXTc'
* @author treeroot A9n41,h
* @since 2006-2-2 Ygx,t|?7
* @version 1.0 VG\mo?G
*/ "
Z;uu)NE
public class QuickSort implements SortUtil.Sort{ " dT>KQ
!Zj#.6c9
/* (non-Javadoc) no3Z\@%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cj^bh
*/ &|z|SY]DL
public void sort(int[] data) { %]GV+!3S
quickSort(data,0,data.length-1); )OUU]MUH
} c! ~T2t
private void quickSort(int[] data,int i,int j){ c(:Oyba
int pivotIndex=(i+j)/2; b]K>vhQV
file://swap $`Rxn*}V4#
SortUtil.swap(data,pivotIndex,j); #7C6yXb%
V2QW\2@$
int k=partition(data,i-1,j,data[j]); BvI 0v:
SortUtil.swap(data,k,j); CXa Ld7nMX
if((k-i)>1) quickSort(data,i,k-1); sy.:T]ZH
if((j-k)>1) quickSort(data,k+1,j); cKpQr7]ur
28+HKbgK
} @H4wHlb
/** z`@z
* @param data 82.HH5Z{
* @param i gUb
"3g0
* @param j w06gY
* @return #W^_]Q=5R'
*/ '8={ sMy
private int partition(int[] data, int l, int r,int pivot) { Fva]*5
do{ S| "TP\o
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PHl4 vh#E!
SortUtil.swap(data,l,r); uH]
m]t
} GDmv0V$6
while(l SortUtil.swap(data,l,r); ]gHLcr3
return l; h.D^1
} r"[L0Cbb
i]@c.QiFN
} YR8QO-7
.)
pLJeajv)z
改进后的快速排序: .> ,Z kS
XJ\_V[WA
package org.rut.util.algorithm.support; 2+Vp'5>&
6,zDBax
import org.rut.util.algorithm.SortUtil; ]wR6bEm7
dL(4mR8
/** D0KELAcY
* @author treeroot i2U/RXu
* @since 2006-2-2 E]?2!)mgce
* @version 1.0 `{WCrw6)
*/ 1V\1]J/
public class ImprovedQuickSort implements SortUtil.Sort { N&,"kRFFo
{~"Em'}J
private static int MAX_STACK_SIZE=4096; sHF%=Vu
private static int THRESHOLD=10; ) _#T c
/* (non-Javadoc) r=|vad$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lkyJ;}_**
*/ Y& m<lnB
public void sort(int[] data) { fW[_+r]
int[] stack=new int[MAX_STACK_SIZE]; ?Cc$]
.;j"+Ef
int top=-1; y
"<JE<X
int pivot; }Uq/kei^P
int pivotIndex,l,r; ![j(o!6&
;wpW2%&
stack[++top]=0; R<t&F\>
stack[++top]=data.length-1; 8db6(Q~P
HK?Foo?
while(top>0){ `}ZL'\G
int j=stack[top--]; WE7>?H*Ro
int i=stack[top--]; R,XD6' Q
bf{Ep=-
pivotIndex=(i+j)/2; :
qr}M
pivot=data[pivotIndex]; @!Y.935/0
?!rU
|D
SortUtil.swap(data,pivotIndex,j); ]KzJ u`O%G
Mru~<:9
file://partition EyzY2>"^
l=i-1; [10$a(g\x
r=j; T<_+3kw
do{ &KLvr|
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;,R[]B01u
SortUtil.swap(data,l,r); E=3#TBd
} \?[O,A
while(l SortUtil.swap(data,l,r); 0;'j!`l9
SortUtil.swap(data,l,j); =:kiSrBS3t
&C\=!r0j^
if((l-i)>THRESHOLD){ "ngSilH?D
stack[++top]=i; /Lj%A
stack[++top]=l-1; ,CN#co
} ?#x'_2
if((j-l)>THRESHOLD){ 9j9YQ2
stack[++top]=l+1; rUGZjLIGqz
stack[++top]=j; u87=q^$
} rGGS]^
uT#Acg
} oXvdR(Sb^
file://new InsertSort().sort(data); T<!\B]
insertSort(data); 3{6ps : w
} o$*bm6o
/** f;&` 9s| 1
* @param data Au~+Zz|mQ
*/ 9T?~$XlX
private void insertSort(int[] data) { wA{*W>i
int temp; r{bgTG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?L`MFR
} I=Gr^\x=
} )j$b9ZBk
} p|xs|O6{
wV7@D[8
} >B @i
E
R994R@gz
归并排序: f6@^Mg
+qE,<c}}
package org.rut.util.algorithm.support; p`shYyE
)zo#1$C-
import org.rut.util.algorithm.SortUtil; = E##},N"
L.R"~3
/** mYzsTUq
* @author treeroot oUnq"]
* @since 2006-2-2 "TEBByO'
* @version 1.0 W9:fKP
*/ $K5ni {M;
public class MergeSort implements SortUtil.Sort{ @2)t#~Wc4h
i7Y
s_8A"9
/* (non-Javadoc) q}wl_ku9+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gK&5HTo
*/
zZS>+O
public void sort(int[] data) { J
r=REa0
int[] temp=new int[data.length]; UUt~W
mergeSort(data,temp,0,data.length-1); ZJiuj!
} <L[T'ZE+
yBUZVqqDa
private void mergeSort(int[] data,int[] temp,int l,int r){ r@N39O*Wq
int mid=(l+r)/2; Q"x`+?!
if(l==r) return ; L{+&z7M
mergeSort(data,temp,l,mid); &ryl$!!3H
mergeSort(data,temp,mid+1,r); oAIY=z
for(int i=l;i<=r;i++){ *93l${'
temp=data; Tw`F?i~
} IBn'iE[>
int i1=l; 9;;]q?*
int i2=mid+1; Vu_7uSp,)
for(int cur=l;cur<=r;cur++){ My'9S2Y8nv
if(i1==mid+1) ^K1~eb*K
data[cur]=temp[i2++]; `</=AY>
else if(i2>r) C}dKbs^g|
data[cur]=temp[i1++]; <(u3+`f1s
else if(temp[i1] data[cur]=temp[i1++]; G_4K+
-K
else #"3[f@|e
data[cur]=temp[i2++]; T%;k%
} +xoyKP!
} A52LH,
c+)36/; X
} kMfc"JXF
FF~on06!
改进后的归并排序: OX#eLco
o(v"?Y 6
package org.rut.util.algorithm.support; 4eDmLC"Y
*
=!I8vQ>
import org.rut.util.algorithm.SortUtil; hlSB7D"d
(r#5O9|S
/** >x|A7iWn{,
* @author treeroot r_!{!i3B
* @since 2006-2-2 !3b|*].B
* @version 1.0 I{*.htt{
*/ \FY/eQ*07
public class ImprovedMergeSort implements SortUtil.Sort { +R{A'Yl[(
yH0yO*RZ
private static final int THRESHOLD = 10; E.zYi7YUKK
XZUB*P}]D
/* d=xI
* (non-Javadoc) ;L\!g%a
* qY*%p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T_5*iwI
*/ ~#IWM+I
public void sort(int[] data) { >uP{9kDm
int[] temp=new int[data.length]; |g: '')>[
mergeSort(data,temp,0,data.length-1); !.tL"U~4
} &"~,V6,q
k=ior
private void mergeSort(int[] data, int[] temp, int l, int r) { 82^
z-t{
int i, j, k; EA%#/n
int mid = (l + r) / 2; |)|vG_
if (l == r) ^6N3n kyZ
return; luG023'
if ((mid - l) >= THRESHOLD) &kr_CP:;
mergeSort(data, temp, l, mid); 4X(1
else 'aSZ!R
insertSort(data, l, mid - l + 1); @vQ;>4 i.
if ((r - mid) > THRESHOLD) wt_?B_nR
mergeSort(data, temp, mid + 1, r); nkr,
else OW[/%U>
insertSort(data, mid + 1, r - mid); 0s+rd&
8`rAE_n`%
for (i = l; i <= mid; i++) { )M|O;~q
temp = data; 5sA>O2Rt>
} {3F}Slb
for (j = 1; j <= r - mid; j++) { P}.yEta
temp[r - j + 1] = data[j + mid]; ]/<Qn-BbU
} y$r?t0
int a = temp[l]; G}9bCr,
int b = temp[r]; a-UD_|!
for (i = l, j = r, k = l; k <= r; k++) { (Ay4B*|!
if (a < b) { g O\f:Pg
data[k] = temp[i++]; |aOnV,}
a = temp; }{w_>!ee
} else { +i q+
data[k] = temp[j--]; $J;=Ux)$
b = temp[j]; W:;`
} 2jrX
} =E6i1x%j
} yoQ?lh
wZ\e3H z
/** n_!]B_Vd$
* @param data ([4{n
* @param l &s6(3k
* @param i k{u%p <
*/ 8'g*}[
private void insertSort(int[] data, int start, int len) { ?[L0LL?ce
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Jb)eC?6O
} @]VvqCk
} y!{/'{?P
} #Ko+_Hm?4
} ui#1 +p3G
5>z:[OdY*
堆排序: lG[
)8!:+
NGb!7Mu9
package org.rut.util.algorithm.support; =-1^K
w3]0
!)t1
import org.rut.util.algorithm.SortUtil; u_/OTy
q%=7<( w
/** "`1of8$X7
* @author treeroot W)Kpnb7
* @since 2006-2-2 LTls]@N
* @version 1.0 nF!_q;+Vp
*/ NId~|&\
public class HeapSort implements SortUtil.Sort{ iYfLo">
{$QF*j
/* (non-Javadoc) hz~CW-47
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7+Jma! o
*/ 2M(PH]D
public void sort(int[] data) { XKPt[$ab
MaxHeap h=new MaxHeap(); A](}"Pi!n
h.init(data); ?D$b%G{
for(int i=0;i h.remove(); s%TO(vT
System.arraycopy(h.queue,1,data,0,data.length); @*`UOgP7
} |{|r?3
;(iUY/ h[h
private static class MaxHeap{ ^$s~qQQ}B
Iz$W3#hi
void init(int[] data){ J'Mgj$T $
this.queue=new int[data.length+1]; 5)zh@aJ@
for(int i=0;i queue[++size]=data; .]P;fCQmM
fixUp(size); &fNE9peQFa
} lt(-,md
} kk\zZC
<
a518N*]j
private int size=0; uL2{v
Vwh&^{Eh
private int[] queue; qu~"C,
LXEu^F~{u#
public int get() { p$!+2=)gY
return queue[1]; s"Pk-Dv
} i\R\bv[9
$q@RHcj
public void remove() { )eGu4iEPM
SortUtil.swap(queue,1,size--); )b2E/G@X&
fixDown(1); yW=hnV{
} `R=_t]ie
file://fixdown Vi-!E
private void fixDown(int k) { )1yUV*6
int j; ujHzG}2z
while ((j = k << 1) <= size) { ZtK%b+MBP
if (j < size %26amp;%26amp; queue[j] j++; p 2f
WL
if (queue[k]>queue[j]) file://不用交换 =`.5b:e
break; `q{'_\gVt(
SortUtil.swap(queue,j,k); >D^7v(&
k = j; _(s|Q
} 9qO:K79|
} BMsy}08dQ
private void fixUp(int k) { wk
<~Y 3u
while (k > 1) { ^VYZ%
int j = k >> 1; 9C'+~<l
if (queue[j]>queue[k]) r
L|BkN
break; mt6uW+t/
SortUtil.swap(queue,j,k); wTuRo
J
k = j; bFdg'_
} .+~kJ0~Y
} snzH}$Ls
WMz|FFKVY
} Sw9mrhzJfe
G;#t6bk
} IhKas4
+z?f,`.*
SortUtil: \7w85$
5}^08Xl
package org.rut.util.algorithm; L5|;VH
SE-, 1p
import org.rut.util.algorithm.support.BubbleSort; n)7$xYuH
import org.rut.util.algorithm.support.HeapSort; ]be2jQx3
import org.rut.util.algorithm.support.ImprovedMergeSort; \c^jaK5
import org.rut.util.algorithm.support.ImprovedQuickSort; O
NzdCgY
import org.rut.util.algorithm.support.InsertSort; kk./-G
import org.rut.util.algorithm.support.MergeSort; X!HSS/'
import org.rut.util.algorithm.support.QuickSort; ^>}[[:( 6/
import org.rut.util.algorithm.support.SelectionSort; [67f; ?b
import org.rut.util.algorithm.support.ShellSort; hr"+0KeX
ZjbG&oc
/** XlcDF|?{.
* @author treeroot q@yabuN@,j
* @since 2006-2-2 _I"<?sh3
* @version 1.0 <y/AEY1
*/ T1W9@9,s
public class SortUtil { vh.tk^&
public final static int INSERT = 1; "YU~QOGx@
public final static int BUBBLE = 2; [#fqyg
public final static int SELECTION = 3; c] 9CN
public final static int SHELL = 4; k yA(m;r
public final static int QUICK = 5; ill' KPy
public final static int IMPROVED_QUICK = 6; ED_5V@
public final static int MERGE = 7; T7nX8{l[RG
public final static int IMPROVED_MERGE = 8; u\Q**m2XP
public final static int HEAP = 9; PsT v\!
bH]!~[
public static void sort(int[] data) { C^v- &*v
sort(data, IMPROVED_QUICK); _;RD-kv
} N28?JQha
private static String[] name={ D_kzR
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" XQ y|t"Vq>
}; on&=%tCAL
*wyLX9{:
private static Sort[] impl=new Sort[]{ [4yQbqe;
new InsertSort(), 0s[3:bZ\Ia
new BubbleSort(), qCT\rZU
new SelectionSort(), _( /lBf{|
new ShellSort(), \5c -L_
new QuickSort(), $ =a$z"
new ImprovedQuickSort(), +W[#;)ea(
new MergeSort(), :u+#:8u
new ImprovedMergeSort(), <G =@Gl
new HeapSort() &!fcL Jd
}; B>21A9&
5!fW&OiY
public static String toString(int algorithm){ vyy\^nL
return name[algorithm-1]; 6u3(G j@
} "<R
2oo)^
VQ}3r)ch
public static void sort(int[] data, int algorithm) { ``CADiM:S
impl[algorithm-1].sort(data); vK~KeZ\,p=
} OvG |=
wA&)y>n-
public static interface Sort { Y\S^DJy
public void sort(int[] data); _qNLy/AY
} '0rwNEg
-{mq\GvGn
public static void swap(int[] data, int i, int j) { nit7|T@^
int temp = data; *dgNpJ 9
data = data[j]; |.W;vc <
data[j] = temp; l[{}ZKZ
} bncFrzp#o
} ="E
V@H?U