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。 50N4J
插入排序: YkWHI(p
0W*{ 1W
package org.rut.util.algorithm.support; L/tn;0
P{n#^4
import org.rut.util.algorithm.SortUtil; hvw9i7#
/** >Dr(%z6CN
* @author treeroot B{j><uxl
* @since 2006-2-2 X"r)zCP+t
* @version 1.0 EYq?NL='
*/ [UzD3VPg
public class InsertSort implements SortUtil.Sort{ <@-O06
*pJGp:{6V?
/* (non-Javadoc) ^)gyKl:E'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f?sm~PwC-
*/ |^1U<'oM#
public void sort(int[] data) { dyWp'vCQs\
int temp; (CxA5u1|l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :uo1QavO@,
} $gBQ5Wd
} ZiJF.(JS
} C!5A,| DX
:'Qiwf&
} MJ)lZ!KZ
JkAM:,^(
冒泡排序: {'O><4
}~I!'J#)
package org.rut.util.algorithm.support; yQ[;y~W
I$xZV?d.
import org.rut.util.algorithm.SortUtil; /IUu-/ D
)Fv.eIBY
/**
l!|c_
* @author treeroot J2W-l{`r<
* @since 2006-2-2 ~:z.Xu5m
* @version 1.0 Pq omi!1
*/ p,fV .5q
public class BubbleSort implements SortUtil.Sort{ Wm}c-GD
K?^;|m-
/* (non-Javadoc) 'K,\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t_3j_`
*/ Q*smH-Sw
public void sort(int[] data) { m;OvOc,
int temp; c1'@_Is
for(int i=0;i for(int j=data.length-1;j>i;j--){ X,|8Wpi=
if(data[j] SortUtil.swap(data,j,j-1); FXof9fa_B
} YJ _eE
} C$y6^/7)
} !2LX+*;
} K&|h%4O
RehmVkT
} ^Pn|Q'{/p
!!1?2ine
选择排序: dE7x
SI
IK2da@V
package org.rut.util.algorithm.support; 2a$.S" ?
g<:Lcg"u
import org.rut.util.algorithm.SortUtil; JY0aE
>H;i#!9,
/** ")|/\ w,
* @author treeroot \HeJc:^
* @since 2006-2-2 h&<"jCjL
* @version 1.0 $xbC^ k
*/ 9pp+<c
public class SelectionSort implements SortUtil.Sort { ;28d7e}
*r`=hNr
/* Hy.u6Jt*/
* (non-Javadoc) A5XMA|2_
* (0$~T}lH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }\"EI<$s
*/ n1f8jS+'}
public void sort(int[] data) { ]" 'yf;g
int temp; @Po5AK3cy
for (int i = 0; i < data.length; i++) { iE~!?N|a3
int lowIndex = i; g&Vhu8kNIA
for (int j = data.length - 1; j > i; j--) { }Ce9R2
if (data[j] < data[lowIndex]) { 7OV^>"S
lowIndex = j; YJJ1N/Z1
} fq7#rZCxX
} "Oxr}^% i
SortUtil.swap(data,i,lowIndex); hLO)-ueb
} yE$PLM
} R}&?9tVRR
:;k?/KU7
} ,-c,3/tyA
66v,/#K
Shell排序: /G||_Hc
> G\0Z[<v,
package org.rut.util.algorithm.support; oB:7R^a
1V%tev9a
import org.rut.util.algorithm.SortUtil; jRK}H*uem
:R;w<Tbz"
/** CsO!Y\'FY
* @author treeroot P3zUaN\c
* @since 2006-2-2 RM2Ik_IH[l
* @version 1.0 ewMVUq*:
*/ 4>gfLK\R:
public class ShellSort implements SortUtil.Sort{ 1b5Z^a<u
]>n{~4a
/* (non-Javadoc) (t4i&7-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oyl~j#h
*/ B"^j>SF
public void sort(int[] data) { p _gN}v
for(int i=data.length/2;i>2;i/=2){ _{*} )&!M
for(int j=0;j insertSort(data,j,i); ZbFD |~[ V
} 'oa.-g 5
} o=m5AUe?J
insertSort(data,0,1); 7)rQf{q7
} {?qfH>oFA
}a]`"_i;[
/**
|Xso}Y{
* @param data NQdwj>_a
* @param j x93@[B*%
* @param i !nmZ"n|}p
*/ t~+M>Fjm?d
private void insertSort(int[] data, int start, int inc) { <y6`8J7:
int temp; ?%O>]s
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); km%r{
} >F$9&s&
} QQJGqM3a2
} T\6Qr$t
X`8<;l
} A(y6]E!
1-kuK<KR
快速排序: V3,C5KKk&z
9jal D
X
package org.rut.util.algorithm.support; `G\
qGllX
N*IroT3
import org.rut.util.algorithm.SortUtil; ti5fsc
4 9qa
/** e@'x7Zzh
* @author treeroot 8FsQLeOE
* @since 2006-2-2 t[|oSF#i
* @version 1.0 NLsF6BX/-
*/ wT@Z|.)
public class QuickSort implements SortUtil.Sort{ iq;\},
579Q&|L.
/* (non-Javadoc) e,(Vy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <a R
*/ UylIxd
public void sort(int[] data) { !yNU-/K
quickSort(data,0,data.length-1); (hc!!:N~q
} N_%@_$3G]
private void quickSort(int[] data,int i,int j){ }e7Rpgu
int pivotIndex=(i+j)/2; Wv4$Lgr
file://swap (:iMs)
iO{
SortUtil.swap(data,pivotIndex,j); \mb4leg5
2[lP ,;!
int k=partition(data,i-1,j,data[j]); }?m0bM
SortUtil.swap(data,k,j); rZI63S
if((k-i)>1) quickSort(data,i,k-1); g@H<Q('fJ
if((j-k)>1) quickSort(data,k+1,j); !)M}(I}
lxn/97rA
} htB2?%S=T
/** 0:{W
t
* @param data A}(xH`A
* @param i @]Q4K%1^"
* @param j xU;SRB
* @return 7gX32r$%V
*/ l$u52e!7
private int partition(int[] data, int l, int r,int pivot) { '/GB8L
do{ tQ}GTqk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U6JD^G=qR,
SortUtil.swap(data,l,r); w,1N ;R&
} 9SC1A -nF
while(l SortUtil.swap(data,l,r); d V%o:@Z
return l; (?Ku-k
} /JNG}*
AD
} J.iz%8
JuJW]E Q
改进后的快速排序: Uw4iWcC
BA
a:!p
package org.rut.util.algorithm.support; ,ei9 ?9J1
\>$zxC_
import org.rut.util.algorithm.SortUtil; b^R:q7ea
fRNj *bIV
/** BB}WfA
* @author treeroot @3n!5XM{EE
* @since 2006-2-2 or-k~1D
* @version 1.0 L|[i<s;
*/ Od.@G ~
public class ImprovedQuickSort implements SortUtil.Sort { +}jzge"
/`cy4<
private static int MAX_STACK_SIZE=4096; QMMpB{FZ`o
private static int THRESHOLD=10; qkfof{z
/* (non-Javadoc) smCACQ$(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gj;gl
="3
*/ f@sC~A. 9\
public void sort(int[] data) { mxqZj8VuH
int[] stack=new int[MAX_STACK_SIZE]; Gza=
0
R &1>\t
int top=-1; IB|!51H
int pivot; kR+}7G+
int pivotIndex,l,r; !>(uhuTBF
>s%Db<(P=
stack[++top]=0; WvU[9ME^)
stack[++top]=data.length-1; X
-1r$.
LR&MhG7
while(top>0){ 2IJniS=[>
int j=stack[top--]; Xau%v5r
int i=stack[top--]; o?]Q&,tO
@<DRFP
pivotIndex=(i+j)/2;
:%sG'_d
pivot=data[pivotIndex]; oDS7do
k3&68+
SortUtil.swap(data,pivotIndex,j); A8ViJ
+At[[
file://partition *6JA&zj0B
l=i-1; 3MX#}_7A
r=j; pg5W`4-F
do{ {]Mwuqn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uP4yJ/]
SortUtil.swap(data,l,r); a@g
<cl7a,
} 7
\xCNOKh
while(l SortUtil.swap(data,l,r); q?frt3o
SortUtil.swap(data,l,j); 6O?zi|J[:
x`?>j$
if((l-i)>THRESHOLD){ sssw(F
stack[++top]=i; t<Sa;[+
stack[++top]=l-1; 0SD'&
} Xf ^_y(?
if((j-l)>THRESHOLD){ ttr`
stack[++top]=l+1; !ak760*A
stack[++top]=j; ;(mNjxA
} *v#V%_ o
RA a1^Qb
} TT3 6Y
file://new InsertSort().sort(data); <Hv/1:k}
insertSort(data); Jd `Qa+
} U:x;4
/** NxJnU<g-
* @param data h_-4Q"fb(
*/ FVNTE+LW
private void insertSort(int[] data) { S/Ic=
int temp; lDBAei3iB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YuuTLX%3
} ^coCsV^CW"
} 7cV
G?Wr
} /nv*OKS|
UDZ0ne0-
} 0fj C>AS
L'Iw9RAJ
归并排序: @|h9jx|
h@JX?LzZS
package org.rut.util.algorithm.support; zWPX
DhxS@/
import org.rut.util.algorithm.SortUtil; `JV(ae0
FzOWM7+\
/** ;E{jn4B'
* @author treeroot 7Z9'Y?[m
* @since 2006-2-2 yC
?p,Ci,
* @version 1.0 G>?kskm
*/ V ~jp
public class MergeSort implements SortUtil.Sort{ ,XscO7
N, u]2,E
/* (non-Javadoc) {oOUIP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $+2QbEk&-
*/ >/RFff]Fh0
public void sort(int[] data) { E
el* P M
int[] temp=new int[data.length]; M8:i ]
mergeSort(data,temp,0,data.length-1); D,*|:i
} [$K8y&\L
VZ IY=Q>g
private void mergeSort(int[] data,int[] temp,int l,int r){ =x?WZMO
int mid=(l+r)/2; iN[6}V6Sm
if(l==r) return ; t<c7%i#Od
mergeSort(data,temp,l,mid); ObZhQ.&
mergeSort(data,temp,mid+1,r); RFsUb:%V7-
for(int i=l;i<=r;i++){ x?A<X2
temp=data; *Dq ++
} | )
cJ
int i1=l; 7L:Eg
int i2=mid+1; ,_$J-F?
for(int cur=l;cur<=r;cur++){ ]}Ys4(}
if(i1==mid+1) 7V@r^/`8N
data[cur]=temp[i2++]; &tbAXU5$
else if(i2>r) 6n]jx:CZ,
data[cur]=temp[i1++]; 3O4,LXdA
else if(temp[i1] data[cur]=temp[i1++]; :G98uX t
else Fnk@)1
data[cur]=temp[i2++]; 3 ;" [WOv
} /
j "}e_Q
} [< g9jX5
*[i49X&rd
} 5"G-r._
Nk7=[y#z
改进后的归并排序: u,:hT]
~+
GL>YJ%
package org.rut.util.algorithm.support; Yx,E5}-
_'G'>X>}WU
import org.rut.util.algorithm.SortUtil; ,j{tGj_
T9J&^I
/** E;`^`T40
* @author treeroot ]jI<Js*F
* @since 2006-2-2 G2y1S/
* @version 1.0 +VQD'
*/ :Hb`vH3x
public class ImprovedMergeSort implements SortUtil.Sort { PepR]ym
g/68&
M
private static final int THRESHOLD = 10; gREk,4DAv
'Qg!ww7O
/* g-!
* (non-Javadoc) *@^@7`W
* K:XP;#OsP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E_'H=QN c
*/ 7jxx,#I:
public void sort(int[] data) { yMyvX_UNI
int[] temp=new int[data.length]; zICCSF&H
mergeSort(data,temp,0,data.length-1); %MGt3)
} 2[=3-1c
7l/ZRz}1
private void mergeSort(int[] data, int[] temp, int l, int r) { yK&
int i, j, k; Ad,n+%"e
int mid = (l + r) / 2; H)S!%(x4
if (l == r) B#IUSHC
return; hP'4PLK
if ((mid - l) >= THRESHOLD) Tc"J(GWG
mergeSort(data, temp, l, mid); 7vRp<
else a-S
tOO5s
insertSort(data, l, mid - l + 1); IIT[^_g
if ((r - mid) > THRESHOLD) 6`6 / 2C$%
mergeSort(data, temp, mid + 1, r); NNr6~m)3v
else !U}2YM
J
insertSort(data, mid + 1, r - mid); f34/whD65
(f_YgQEL
for (i = l; i <= mid; i++) { | @ ut/
temp = data; [aA@V0l
} fwA8=oSZd
for (j = 1; j <= r - mid; j++) { #^]vhnbN
temp[r - j + 1] = data[j + mid]; _OjZ>j<B.
} .Mb0++% W
int a = temp[l]; 7BINqVS&
int b = temp[r]; F7j/Zuj
for (i = l, j = r, k = l; k <= r; k++) { tw.GBR
if (a < b) { *aS+XnT/
data[k] = temp[i++]; jTg~]PQ^
a = temp; 5_](N$$
} else { 8!.V`|@lt
data[k] = temp[j--]; |By[ev"Kh%
b = temp[j]; %,~\,+NP
} $mAC8a_Zu
} iFI+W<QR
} f@Jrbg
?M|1'`!c8
/** {irc~||4
* @param data &b^~0Z
* @param l l"+8>Mm
* @param i >`WfY(Lq
*/ R@pY+d9qp
private void insertSort(int[] data, int start, int len) { <'UGYY\wg0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {PxFG<^U
} J;^ PM:6
} +XO\#$o>W
} z k}AGw
} j%y{d(Q4
ZB)R4
堆排序: L~;(M6Jp
8kdJtEW3
package org.rut.util.algorithm.support; &)+H''JY
JN9>nC!Zy_
import org.rut.util.algorithm.SortUtil; ^vT!24sK
1,)
yEeHjU
/** 8TAJ#Lm
* @author treeroot <B0f
* @since 2006-2-2 Xj{fM\,"9
* @version 1.0 3+uL@LXd
*/ *-Yw%uR
public class HeapSort implements SortUtil.Sort{ T_D] rMl
.1;UEb|T
/* (non-Javadoc) pw4^E|X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) itirh"[
*/ ,>b>I#{
public void sort(int[] data) { *IWW,@0
MaxHeap h=new MaxHeap(); WG6
0
h.init(data); 2YKa <?_
for(int i=0;i h.remove();
&qdhxc4
System.arraycopy(h.queue,1,data,0,data.length); g6lWc@]F
} AnX<\7bc}
ZfqN4
private static class MaxHeap{ 6MY<6t0a
Y2 J-`o$5
void init(int[] data){ @>VVB{1@,]
this.queue=new int[data.length+1]; jy2gR1~
for(int i=0;i queue[++size]=data; pk.\IKlG]
fixUp(size); ^5Lk}<utw
} n6WKk+
} 8aW El%
mrnPZf i
private int size=0; 1F5KDWtE
[H<TcT8
private int[] queue; /QyKXg6)l
G'G8`1Nj
public int get() { /<8y>
return queue[1];
HrsG^x
} #L+:MA7H
h,m 90Hd+
public void remove() { r
<5}& B`
SortUtil.swap(queue,1,size--); 1VM2CgR a
fixDown(1); C[
mTVxd
} KsOWTq"uj
file://fixdown
JL1A3G
private void fixDown(int k) { JJtx `@Bc
int j; yTd8)zWq
while ((j = k << 1) <= size) { L0!CHP/nRS
if (j < size %26amp;%26amp; queue[j] j++; }}tbOD)t
if (queue[k]>queue[j]) file://不用交换 < z2wt
break; A)C)5W
SortUtil.swap(queue,j,k); @lE'D":?
k = j; /
}$n_N\!)
} |0=UZK7%O
} +K'Hr:(
private void fixUp(int k) { ZzupK^5Z
while (k > 1) { ySmbX
int j = k >> 1; .nrllVG%`
if (queue[j]>queue[k]) 3)W zX
break; h5@GeYda
SortUtil.swap(queue,j,k); gd*Gn"
k = j; b@;Wh-{d
} [TFJb+N&
} X^ Is-[OvE
V9v20iX
} XhM!pSl\
pzz*>Y
} 87 s *lS
-<6?ISF2
SortUtil: v wEbGx
nlNk
package org.rut.util.algorithm;
qt~=47<d
:HO5
T
import org.rut.util.algorithm.support.BubbleSort; z2uL[deN'"
import org.rut.util.algorithm.support.HeapSort; /!?LBtqy
import org.rut.util.algorithm.support.ImprovedMergeSort; ZKrLp8l\
import org.rut.util.algorithm.support.ImprovedQuickSort; -U=Ci
import org.rut.util.algorithm.support.InsertSort; a9.yuSzL
import org.rut.util.algorithm.support.MergeSort; _rwJ:r
import org.rut.util.algorithm.support.QuickSort; aaFT
import org.rut.util.algorithm.support.SelectionSort; ;Nj9,Va(t
import org.rut.util.algorithm.support.ShellSort; aE`d[dSG
+GI906K
/** Q<
:RLKVT
* @author treeroot V9<`?[Usv
* @since 2006-2-2 3O/#^~\'hW
* @version 1.0 l&qnqmW<
*/ y'K2#Y~1e
public class SortUtil { r\;fyeH
public final static int INSERT = 1; :D) (3U5
public final static int BUBBLE = 2; xmvE*q"9]
public final static int SELECTION = 3; x)~i`$
public final static int SHELL = 4; {p84fR1P
public final static int QUICK = 5; wu)+n\mt'
public final static int IMPROVED_QUICK = 6; EsMX#1>/m
public final static int MERGE = 7;
-BSdrP|
public final static int IMPROVED_MERGE = 8; Oo|PZ_P
public final static int HEAP = 9; Ur(R[*2bx
r0XEB,}
public static void sort(int[] data) { 2jFuF71
sort(data, IMPROVED_QUICK); u
S1O-Q>
} W[\6h Zv
private static String[] name={ G@k]rwub
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Dw%'u'HG
}; 43PLURay
u=.8M`FxP
private static Sort[] impl=new Sort[]{ "B_3<RSL
new InsertSort(), ef7{D
P
new BubbleSort(), x=oV!x
new SelectionSort(), 0ra'H/>Ly
new ShellSort(), gw]%:
WeH
new QuickSort(), ;miif
new ImprovedQuickSort(), Q\N*)&Sd<M
new MergeSort(), r=H?fTY<3E
new ImprovedMergeSort(), ?RsrY4P
new HeapSort() zw>L0gC
}; $a M5jH<
f4"UI-8;n
public static String toString(int algorithm){ ]4l2jY
return name[algorithm-1]; UTD_rQ
} hIJtu;}zU
=SfNA
F
public static void sort(int[] data, int algorithm) { s<s}6|Z
impl[algorithm-1].sort(data); 8=`L#FkRp
} ).SJ*Re*^I
k
QuEG5n.-
public static interface Sort { R~\R>\
public void sort(int[] data); X4
Arn,
} AE0uBv
~L)~p%rbi
public static void swap(int[] data, int i, int j) { ~3F'X
int temp = data; uuC ["Z
data = data[j]; Jka>Er
data[j] = temp; {zwH3)|Hn
} vd%g'fTy9
} 4)S99|1