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。 + ?1GscJ
插入排序: j|eA*UE
AU{"G
package org.rut.util.algorithm.support; fr@F7s5}
9njwAKF?
import org.rut.util.algorithm.SortUtil; !gsvF\XDM
/** H];B?G';C
* @author treeroot G-aR%]7$g
* @since 2006-2-2 M+/xw8}a
* @version 1.0 'Uok<;
*/ mB?x_6#d9
public class InsertSort implements SortUtil.Sort{ .fA*WQ!lb
%oZ:Awx
/* (non-Javadoc) J$dwy$n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D Ez,u^
*/ 25^?|9o 7
public void sort(int[] data) { bF'rK'',
int temp; -fR:W{u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }lJ;|kx$
} hp\&g2_S0W
} NxT"A)u
} [|}IS@
C*7/iRe
} {z#2gc'Q
#/)t]&n
冒泡排序: C8N)!5(A
r"h;JC/&<T
package org.rut.util.algorithm.support; [Kgb#L'{
|c_qq Bd
import org.rut.util.algorithm.SortUtil; a?cJl
!vnQ;g5
/** VtreOJ+
* @author treeroot #(8|9
* @since 2006-2-2 qUe
_B
* @version 1.0 pSZ2>^";
*/ 6cQgp]%
public class BubbleSort implements SortUtil.Sort{ 4M'>oa
op,L3:R\Z
/* (non-Javadoc) 8[^'PIz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o4(*nz
*/ N.F5)04
public void sort(int[] data) { JKfG/z|
int temp; FL0uY0K
for(int i=0;i for(int j=data.length-1;j>i;j--){ yV30x9i!2
if(data[j] SortUtil.swap(data,j,j-1); I.2J-pu}
} |{ jT+
} Jd2.j?P=
} s27IeF3
} hsZ/Vnn`
39pG-otJ
} L*nK>
+
=bVPHrKNQ
选择排序: >@ t
C@rGa7
package org.rut.util.algorithm.support; R%E7 |NAG
bS.w<V
Ew
import org.rut.util.algorithm.SortUtil; DSGcxM+
)G? qX.D
/** ^)VwxH:s
* @author treeroot
:|7#D,2
* @since 2006-2-2 aQkOQy
* @version 1.0 |@qw
*/ 3r\8v`^>
public class SelectionSort implements SortUtil.Sort { d|`Ll
v*;d
/* 8xpplo8
* (non-Javadoc) xNP_>Qa~
* 7ubz7*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p 7?
*/ &y[NCAeA
public void sort(int[] data) { K%(y<%Xp
int temp; WWT1= #"
for (int i = 0; i < data.length; i++) { }\pI`;*O|
int lowIndex = i; f)I5=Ijy(
for (int j = data.length - 1; j > i; j--) { tF2"IP.
if (data[j] < data[lowIndex]) { J
3!~e+wn
lowIndex = j; H'+7z-%G
} N^^0j,
} :5d>^6eoB?
SortUtil.swap(data,i,lowIndex); K%^n.
} U=>S|>daR
} k[=qx{Osx%
0lw>mxN
} ~%{2Z_t$
PnsBDf%v
Shell排序: Jh[0xb
GK?ual1
package org.rut.util.algorithm.support; HpwMm^
74s{b]jN'-
import org.rut.util.algorithm.SortUtil; |<%!9Z
KKeMi@N
/** {]vD@)k
* @author treeroot \& JZ
>h
* @since 2006-2-2 jDzQw>TX
* @version 1.0 (8 nv&|
*/ ]@q%dsz
public class ShellSort implements SortUtil.Sort{ en<mm#Ab
#-hO\
QdC
/* (non-Javadoc) *kr/,_K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8:cbr/F<
*/ yNu_>!Cp5
public void sort(int[] data) { ?^|`A}q#
for(int i=data.length/2;i>2;i/=2){ 18g_v"6o
for(int j=0;j insertSort(data,j,i); :_{8amO
} UD I{4+z
} n:j'0WW
insertSort(data,0,1); %>_[b,
} GAGS-G#
tDByOml8Ix
/** -[>de!
T3$
* @param data {C1crp>q
* @param j A~ya{^}
* @param i sXKkZ+2q
*/ lU
WXXuO]
private void insertSort(int[] data, int start, int inc) { LZ*8YNp1'
int temp; -@TY8#O#-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j;x()iZ<
} ez4!5&TzRm
} L"_XWno
} J0G@]H
"> uN={Iy
} Aoa8Q
E
H`EhsYYK
快速排序: $-4](br|
gesbt
package org.rut.util.algorithm.support; :Mx
_0/unJl`
import org.rut.util.algorithm.SortUtil; Dc9uq5l
k.@![w\ea
/** Z9{~t
* @author treeroot Hq@+m!
* @since 2006-2-2 Daf|.5>(@
* @version 1.0 :uL<UD,vu3
*/ ;m/e|_4;y
public class QuickSort implements SortUtil.Sort{ nF3}wCe)
&|>@K#V8-;
/* (non-Javadoc) &(F
c .3m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g` rr3jP
*/ =]5tYIU
public void sort(int[] data) { ~/OY1~c
quickSort(data,0,data.length-1); w$2q00R>
}
'g v0;L
private void quickSort(int[] data,int i,int j){ \ovs[&
int pivotIndex=(i+j)/2; f}otIf
file://swap vEv kC
SortUtil.swap(data,pivotIndex,j); m*0YMS>Y |
7vRtTP
int k=partition(data,i-1,j,data[j]); bzN[*X|
SortUtil.swap(data,k,j); 5#Er& 6s
if((k-i)>1) quickSort(data,i,k-1); }~FX!F#oU
if((j-k)>1) quickSort(data,k+1,j); WP<L9A
Xr*I`BJ
} 1v@#b@NXM7
/** 'u,|*o
* @param data Mw[3711v
* @param i j,n:%5P\v
* @param j Xfiwblg
* @return ]HKt7 %,
*/ jP@ @<dt
private int partition(int[] data, int l, int r,int pivot) { {QG.> lB
do{ a`O'ZY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o|$D|E
SortUtil.swap(data,l,r); Q3@ zUjq_Q
} -FeXG#{)
while(l SortUtil.swap(data,l,r); <z Gh}.6v
return l; R >x d*A
} Y;'<u\^M"
D
0Xl`0"'
} p1N}2]e
IQqUFP$8g
改进后的快速排序: F)3+IuY
lyn%r
package org.rut.util.algorithm.support; +VwQ=[y]
hgU;7R,?ir
import org.rut.util.algorithm.SortUtil;
]jT}]9Q$
fQ+whGB
/** c3]t"TA,
* @author treeroot 0R
x#Fm
* @since 2006-2-2 ?kjQ_K
* @version 1.0 ^WA7X9ed
*/ F^,:p.ihm<
public class ImprovedQuickSort implements SortUtil.Sort { $]7f1U_e
Mj0,Y#=76
private static int MAX_STACK_SIZE=4096; ZmK=8iN9J
private static int THRESHOLD=10; tE*BZXBlm
/* (non-Javadoc) ||+~8z#+,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2mLZ4r>WE
*/ @K;b7@4y
public void sort(int[] data) { `}X3f#eO&
int[] stack=new int[MAX_STACK_SIZE]; 5es t
W"\~O"a
int top=-1; IjI'Hx
int pivot; !do`OEQKR
int pivotIndex,l,r; K EAXDF
dx%z9[8~{.
stack[++top]=0; 4o>y9
stack[++top]=data.length-1; *l5?_tF
#W\}v(Ke
while(top>0){ ;i@S}LwL
int j=stack[top--]; Yf0 KG
int i=stack[top--]; }[+uHR6L
=Rd`"]Mnfb
pivotIndex=(i+j)/2; U`v2Yw3E
pivot=data[pivotIndex]; <Iw{fj|
96WzgHPWo
SortUtil.swap(data,pivotIndex,j); xGs}hVlZiC
s-p)^B
file://partition HxI6_ >n^I
l=i-1; !GOaBs
r=j; 91OxUVd
do{ 2z>-H595az
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;"dX]":
SortUtil.swap(data,l,r); }*fBHzNN
} '9\cIni0
while(l SortUtil.swap(data,l,r); v9(5HY
SortUtil.swap(data,l,j); RZ6y5
x*OdMr\n8?
if((l-i)>THRESHOLD){ 9r%fBiSk
stack[++top]=i; t]K20(FSN
stack[++top]=l-1; oR#W@OK@is
} }:8}i;#M
if((j-l)>THRESHOLD){ U>tR :)
stack[++top]=l+1; $;v! ,>
stack[++top]=j; ?(ORk|)kU
} Zue3Z{31T
zx@!8Z
} <Gpji5f2
file://new InsertSort().sort(data); $dfc@Fn^x
insertSort(data); T//xxH]w-
} kn3w6]
/** RELNWr
* @param data <4rnOQ:
*/ p)biOG
private void insertSort(int[] data) { {-A|f
int temp; $dM_uSt
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BN*:*cmUl
} [f+wP|NKL
} K0w}l" )A
} =O}I{dNKZV
^0]0ss;##R
} `gSMb
UgF
}rQ Qe:{]B
归并排序: 6Bq_<3P_
5CK+\MK
package org.rut.util.algorithm.support; A f'&, 1=q
~5
6&!4
import org.rut.util.algorithm.SortUtil; )>@S8v,(
]_C"A
/** Pe`mZCd^
* @author treeroot s;A7:_z#7
* @since 2006-2-2 a1pp=3Pd?~
* @version 1.0 @i ~ A7L0/
*/ UPtj@gtcY
public class MergeSort implements SortUtil.Sort{ `v-[&
.xIAep_
/* (non-Javadoc) nJI2IPZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8AR8u!;8
*/ 4t*%(
public void sort(int[] data) { gC}}8( k
int[] temp=new int[data.length]; eT
b!xb
mergeSort(data,temp,0,data.length-1); Pmv@
} BX/3{5Y>{
,Zmjw@w
private void mergeSort(int[] data,int[] temp,int l,int r){ luP;P&
int mid=(l+r)/2; uV:R3#^
if(l==r) return ;
wra0bS)4
mergeSort(data,temp,l,mid); k4Q>J,k
mergeSort(data,temp,mid+1,r); HV%/baX]
for(int i=l;i<=r;i++){ xPZ>vCg
temp=data; {aAd (~YZ
} 1ksFxpE
int i1=l;
_X#R v2a
int i2=mid+1; L[<#>/NPy
for(int cur=l;cur<=r;cur++){ ;6/WjUDw<|
if(i1==mid+1) 3ijPm<wn
data[cur]=temp[i2++]; !hVbx#bXl
else if(i2>r) DS?.'"n[u
data[cur]=temp[i1++]; Pn!~U] A$%
else if(temp[i1] data[cur]=temp[i1++]; !.P||$x`&
else !E$$FvL
data[cur]=temp[i2++]; n])#<0
} Wt/;iq"
} 2E }vuw=c
*2Pr1U
} 3sr_V~cZ9
||hQ*X<m>
改进后的归并排序: 1$b@C-B@g
i q`}c
|c
package org.rut.util.algorithm.support; "pkdZ
a``|sn9
import org.rut.util.algorithm.SortUtil; ]g-%7g|
JuO47}i] 5
/** ~,/@]6S&Y
* @author treeroot ?tYZ/
* @since 2006-2-2 |Gic79b
* @version 1.0 X['9;1Xr
*/ 6f +aGz
public class ImprovedMergeSort implements SortUtil.Sort { ,l~<|\4,wv
lpG%rN!
private static final int THRESHOLD = 10; ~N!HxQ
k6C XuU
/* ;VE y{%nF
* (non-Javadoc) m*m),mZ"
* -,bnj^L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uw \@~ ,d
*/ %u!=<yn'
public void sort(int[] data) { xr'1CP
int[] temp=new int[data.length]; +vkmS
mergeSort(data,temp,0,data.length-1); Y,s EM%
} f$dPDbZQ
DFMpU.BN W
private void mergeSort(int[] data, int[] temp, int l, int r) { gsL=_#
?
int i, j, k; e!5} #6Kd
int mid = (l + r) / 2; w(@r-2D"
if (l == r) Jk*cuf`rq
return; @` KYgjjH
if ((mid - l) >= THRESHOLD) ,;,B7g
mergeSort(data, temp, l, mid); l@);U%\pS
else ]s=|+tz\V
insertSort(data, l, mid - l + 1); ;TL.QN/l
if ((r - mid) > THRESHOLD) ,4'gj0
mergeSort(data, temp, mid + 1, r); H*0Y_H=
else 9rEBq&
insertSort(data, mid + 1, r - mid); %jHm9{|X
~xd?y*gk;
for (i = l; i <= mid; i++) { irQ'Rm[
temp = data; Om*QN]lGq
} CY o
m
for (j = 1; j <= r - mid; j++) { ILm+o$o~
temp[r - j + 1] = data[j + mid]; 0j@mzd2
} ;MN$.x+
int a = temp[l]; T >8P1p@A,
int b = temp[r]; iTHwH{!
for (i = l, j = r, k = l; k <= r; k++) { x)C}
if (a < b) { j*>J1M3E
data[k] = temp[i++]; [1rQ'FBB^1
a = temp; =muQ7l:(
} else { "'CvB0>
data[k] = temp[j--]; z>PVv)X
b = temp[j]; =\6)B{#T
} ,'
k?rQ
} e)uC
} Dck/Ea
aEN` `
/** %O`@}Tg
* @param data m]jA(
* @param l EL~$7 J
* @param i Xc-["y64
*/ YF{MXK}
private void insertSort(int[] data, int start, int len) { .\caRb[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]nsjYsT
} D_lRYLA+
} dWd%>9}
} S1$^ _S
=
} +@ChZ
%"`p&aE:
堆排序: jt}Re,
7.29'
package org.rut.util.algorithm.support; @JGmOwZ
+JErc)%
import org.rut.util.algorithm.SortUtil; =7V4{|ESfy
SrKitSG
/** uq3pk3
)W9
* @author treeroot #}#m\=0
* @since 2006-2-2 ndD>Oc}"3
* @version 1.0 |jIH gm
*/ /MtmO$.
public class HeapSort implements SortUtil.Sort{ [~N;d9H+*1
=RWTjTZ
/* (non-Javadoc) W^iK9|[qp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%fcGNzJQ
*/ V,KIi_Z
public void sort(int[] data) { <%^/uS
MaxHeap h=new MaxHeap(); QYbB\Y
h.init(data); `ArUoYbB
for(int i=0;i h.remove(); %*
0GEfl/
System.arraycopy(h.queue,1,data,0,data.length); v\@qMaPY
} 5[;[ Te9=S
e_b,{l#
private static class MaxHeap{ Ii+3yE@c
$U[d#:]
void init(int[] data){ 1>e30Ri,g
this.queue=new int[data.length+1]; I<2`wL=
for(int i=0;i queue[++size]=data; s*GZOz
fixUp(size); \kQ)fk]^
} 4$R!)
} [#GBn0BG)
3uYLA4[-B
private int size=0; =G}a%)?As\
[bnu
DS
private int[] queue; jgE{JK\n4
[R4#bl
public int get() { yepRJ%mp
return queue[1]; cB,^?djJ3
} *fm?"0M5
Fbo"Csn_
public void remove() { *z[vp2
TN
SortUtil.swap(queue,1,size--); 9i\}^ s2
fixDown(1); Tu(:?
} z<eu=OD4t
file://fixdown K#A&
private void fixDown(int k) { <4TI;yy6?
int j; Y@ v][Q
while ((j = k << 1) <= size) { 0'd@8]|H
if (j < size %26amp;%26amp; queue[j] j++; q.J6'v lj/
if (queue[k]>queue[j]) file://不用交换 [6TI_U~
break; 3X(^`lAf)
SortUtil.swap(queue,j,k); ZSNbf|ldiE
k = j; Vu(NP\Wm
} 6 :4GI
} | +;ZC y
private void fixUp(int k) { DG;u_6;JR
while (k > 1) { :kHk'.V1(
int j = k >> 1; lH3.q4D
5
if (queue[j]>queue[k]) -=lm`X<:
break; /6rjGc
SortUtil.swap(queue,j,k); XI`_PQco
k = j; Kvg=7o
} .45wwouZkc
}
Z kw-a
c&T5C,]
} DAq
H
ai;!Q%B#Q
} l]|&j`'O
bpsyO>lx/
SortUtil: G5qsnTxUJ
Lx-%y'P
package org.rut.util.algorithm; :fmV||Q
MLr L"I"
import org.rut.util.algorithm.support.BubbleSort; .g/!u(iy
import org.rut.util.algorithm.support.HeapSort; VQ!4(
<XD
import org.rut.util.algorithm.support.ImprovedMergeSort; 9]3l'
import org.rut.util.algorithm.support.ImprovedQuickSort; r5&c!b \
import org.rut.util.algorithm.support.InsertSort; ScJ:F-@>
import org.rut.util.algorithm.support.MergeSort; -v9 (43
import org.rut.util.algorithm.support.QuickSort; ]/!*^;cY(
import org.rut.util.algorithm.support.SelectionSort; Q+f|.0r
import org.rut.util.algorithm.support.ShellSort; !}c D e12
@16y%]Q-E#
/** Jha*BaD~N
* @author treeroot U+VJiz<!
* @since 2006-2-2 <@`K^g;W
* @version 1.0 ~6#mVP5sU)
*/ s;h`n$
public class SortUtil { f@Mku0VT
public final static int INSERT = 1; =3,<(F5Y[
public final static int BUBBLE = 2; cY} jPDH
public final static int SELECTION = 3; t>]W+Lx#
public final static int SHELL = 4; K/(LF}
public final static int QUICK = 5; =O8 YU)#
public final static int IMPROVED_QUICK = 6; M(8xwo-W
public final static int MERGE = 7; 4`~OxL
public final static int IMPROVED_MERGE = 8; ,dba:D=l
public final static int HEAP = 9; `*CoVx~fk
/,7#%D
public static void sort(int[] data) { *Iw19o-I
sort(data, IMPROVED_QUICK); Q\X_JZ
} blz#M #
private static String[] name={ &h[)nD
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G%gdI3h1Z
}; 0D:uM$
i]
@uC-dXA"
private static Sort[] impl=new Sort[]{ 3znhpHO)
new InsertSort(), M/V"Ke"N
new BubbleSort(), F-Z>WC{+
new SelectionSort(), Q9y|1Wg1W
new ShellSort(), iP7KM*ks
new QuickSort(), e7G>'K
new ImprovedQuickSort(), /_fZ2$/
new MergeSort(), h<m>S,@g
new ImprovedMergeSort(), :%Z)u:~':
new HeapSort() Ql7opl,
}; JF&$'
JKmd'ZGw
public static String toString(int algorithm){ =uwG.,lC
return name[algorithm-1]; O'SxTwO
} >y+j!)\
\mN?5QCcE
public static void sort(int[] data, int algorithm) { p38s&\-kEN
impl[algorithm-1].sort(data); L%9yFg%u
} avS9 "e
6w<p1qhW
public static interface Sort { UL7%6v{'*
public void sort(int[] data); ~R|fdD/%
} AF{o=@
,^xsdqpe
public static void swap(int[] data, int i, int j) { P\c0Q;){h"
int temp = data; (I`<;
data = data[j]; hy"p8j7_
data[j] = temp; LY0/\Z"N
} etW-gbr
} /C<} :R