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。 {j?7d; 'j
插入排序: 8xgJSk
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package org.rut.util.algorithm.support; {h#6z>p"u2
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import org.rut.util.algorithm.SortUtil; flG=9~qcGQ
/** F>N+<Z
* @author treeroot t5paYw-b
* @since 2006-2-2 R"*R99
* @version 1.0 0q{[\51*
*/ K;x~&G0=
public class InsertSort implements SortUtil.Sort{ cw;co@!$
GR%{T'ZD`
/* (non-Javadoc) yRC3
.[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }W$8M>l
*/ i\Yl
public void sort(int[] data) { !z MDP/V
int temp; b^ sb]bZW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pI>*u ]x
} "u;YI=+
} I!0JG`&
} HA!t$[_Ve
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} xP{-19s1]
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冒泡排序: UfR~%p>K
H`-=?t
package org.rut.util.algorithm.support; vX+.e1m
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import org.rut.util.algorithm.SortUtil; [ ?iqqG.
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/** G>%AZr{M
* @author treeroot j0FW8!!-g
* @since 2006-2-2 3B{[%#vO
* @version 1.0 ?,07;>&
*/ d+6]u_J
public class BubbleSort implements SortUtil.Sort{ ;i\C]*
)~V}oKk0t
/* (non-Javadoc) 5Z{_m;I.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4T`&Sl
*/ B'}"AC"
public void sort(int[] data) { +8AvTSgX%
int temp; \D?:J3H*]
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~*}$>@f{[X
if(data[j] SortUtil.swap(data,j,j-1); T%(C-Quh
} \"x>JW4w
} :)IV!_>'d
} (a.1M8v+Sg
} #Fs|f3-@
Zu21L3
} s+,&|;Q
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选择排序: ^ve14mbF#.
ffE#^|
package org.rut.util.algorithm.support; GK?4@<fY
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import org.rut.util.algorithm.SortUtil; 5G(E&>~
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/** 3b!,D
* @author treeroot c?K~/bx.
* @since 2006-2-2 40#9]=;}
* @version 1.0 SEM8`lnu
*/ 5HKW"=5Cf
public class SelectionSort implements SortUtil.Sort { .Evy_o\^
Izo! rC
/* %NajFjBI
* (non-Javadoc) nt ,7u(
* >(3\kiYS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cp6WMHLj
*/ U
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public void sort(int[] data) { g97]Y1g
int temp; r:&|vP
for (int i = 0; i < data.length; i++) { i sW\MB]
int lowIndex = i; sJZ!sznn
for (int j = data.length - 1; j > i; j--) { @dgH50o[
if (data[j] < data[lowIndex]) { WVX`<
lowIndex = j; Qi9-z'
} 9(, @aZ
} Y3',"
SortUtil.swap(data,i,lowIndex); qZk:mlYd
} rmd;\)#*`
} P)6lu8zQ
0$HmY2
Men
} .DguR2KT
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Shell排序: _A+w#kiv>
4=[7Em?oLb
package org.rut.util.algorithm.support; ^Q.,\TL01
{0v*xL_O^
import org.rut.util.algorithm.SortUtil;
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/** qOy=O
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* @author treeroot L}%dCe
* @since 2006-2-2 `tEo]p
* @version 1.0 mdbp8,O
*/ +?m0Q;%b
public class ShellSort implements SortUtil.Sort{ jz'<
6bO~/mpWT~
/* (non-Javadoc) {Wv%zA*8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >v+jh(^
*/ Y`GOER
public void sort(int[] data) { \9{F5Sz
for(int i=data.length/2;i>2;i/=2){ 6GL=)0Ah
for(int j=0;j insertSort(data,j,i); e3[:D5
} T~xwo
} q%/uQT?
insertSort(data,0,1); oxz{ ejd{
} kc$)^E7
r"{<%e
/** pyZ9OA!PD
* @param data ~DF:lqwWP
* @param j p9qKLJ*.C
* @param i $m| V :/
*/ d8o53a]
private void insertSort(int[] data, int start, int inc) { -db75=
int temp; Di5(9]o2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1X1 NtS@
} Pm{*.AW1
} T*[
VY1
} |L6&Gf]#5
S :bC[}
} 1Sz A3c
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快速排序: l$xxrb9P!
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package org.rut.util.algorithm.support; 3=0E!e
K^l:MxO-X
import org.rut.util.algorithm.SortUtil; w#y0atsg'
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/** 39i9wrP
* @author treeroot b=;nm#cAI
* @since 2006-2-2 9~\kF5Q"
* @version 1.0 s
+s" MI
*/ C.Uju`3
public class QuickSort implements SortUtil.Sort{ NH A 5e<
m#!=3P7T
/* (non-Javadoc) YB( Gk;]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c=O,;lWFqm
*/ -~{c
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public void sort(int[] data) { hqvE!Of
quickSort(data,0,data.length-1); _fk#<
} O[^%{'
private void quickSort(int[] data,int i,int j){ oqd;6[%G
int pivotIndex=(i+j)/2; fxcc<h4
file://swap }T2xXbU
SortUtil.swap(data,pivotIndex,j); D;}xr_
)!bUR\
int k=partition(data,i-1,j,data[j]); |SZo'
6
SortUtil.swap(data,k,j); tRb]7 z
if((k-i)>1) quickSort(data,i,k-1); 21X`h3+=
if((j-k)>1) quickSort(data,k+1,j); Dim>
7Wbh
"r4AY
} N2r/ho}8
/** [lzN !!B!
* @param data op2Of<{h
* @param i F9"w6;hh
* @param j xM >W2
* @return _gj&$zP
*/ ;*TIM%6#
private int partition(int[] data, int l, int r,int pivot) { 1/+C5Bp*
do{ {$D,?V@%_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >et-{(G
SortUtil.swap(data,l,r); =ac_,]z
} tC?=E#3V
while(l SortUtil.swap(data,l,r); n:
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return l; 5|0,X<&
} MM_k
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C*=Xk/0
} _9 .(a
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改进后的快速排序: $``1PJoi
!LMN[3M_
package org.rut.util.algorithm.support; +j_;(Gw7
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import org.rut.util.algorithm.SortUtil; 3981ie
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/** {Bs~lC$
* @author treeroot QfM zF
* @since 2006-2-2 OVzt\V*+%W
* @version 1.0 e~%
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*/ !)"%),>}o
public class ImprovedQuickSort implements SortUtil.Sort { RcG0 8p.)
~)LH='|h\}
private static int MAX_STACK_SIZE=4096; E907fX[R~
private static int THRESHOLD=10; {R<Ea
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/* (non-Javadoc) >zsid:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ (
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public void sort(int[] data) { H`bSYjgM!
int[] stack=new int[MAX_STACK_SIZE]; u@'0Vk0zGH
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int top=-1; K5ZC:Ks
int pivot; l:0s2
int pivotIndex,l,r; ;7]u!Q
5,qj7HZF
stack[++top]=0; _R'Fco
stack[++top]=data.length-1; '|]e<Mt-
Q)m4_+,d
while(top>0){ ?&G`{Ey
int j=stack[top--];
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int i=stack[top--]; T{wpJ"F5<]
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pivotIndex=(i+j)/2; q5h*`7f
pivot=data[pivotIndex]; cMyiW$;
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SortUtil.swap(data,pivotIndex,j); AqKz$
fx=Awba
file://partition P./V6i<:
l=i-1; S=R7`a<.5
r=j; +;$oJJ
do{ O ,rwP
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +a&p$\
SortUtil.swap(data,l,r); ;k"Bse!/
} iLP7!j
while(l SortUtil.swap(data,l,r); 9CA^B2u
SortUtil.swap(data,l,j); f.aSKQD
=9oPowq
if((l-i)>THRESHOLD){ I}e3zf>
stack[++top]=i; i|w8.}0
stack[++top]=l-1; !CXt*/~
} ]2#
if((j-l)>THRESHOLD){ _Jwq`]Z
stack[++top]=l+1; q)H1pwxD
stack[++top]=j; ,fK3ZC
} Q~R
~xz
&PkLp4mQ
} Y2xL>F
file://new InsertSort().sort(data); @L.82p{h
insertSort(data); Um1[sMc{au
} 1(|D'y#
/** IG(?xf\C
* @param data X37 L\e[c
*/ P\8@g U!uk
private void insertSort(int[] data) { FX9F"42@
int temp; 6x"Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aQI^^$9g
} 2*(Z==XC7
} :4~g;2oag
} ^TMJ8`e
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} hN['7:bQ
3qY K_M^[
归并排序: V"p!Bf
1;Pv0&[q/
package org.rut.util.algorithm.support; QO"oEgB`+Z
qB)"qFa
import org.rut.util.algorithm.SortUtil; DI!V^M[~u
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/** 2H.654
* @author treeroot jp $Z]
* @since 2006-2-2 y5Tlpi`g
* @version 1.0 GUF"<k
*/ r]OK$Ql
public class MergeSort implements SortUtil.Sort{ h~C.VJWl
8$(Dz]v|[&
/* (non-Javadoc) J_>w 3uY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SIbDj[s
*/ Hm+ODv9
public void sort(int[] data) { D")_;NLE1
int[] temp=new int[data.length]; Lh.`C7]
mergeSort(data,temp,0,data.length-1); sp@E8G%xO
} ,K:ll4{b
#gm)dRKm%
private void mergeSort(int[] data,int[] temp,int l,int r){ :
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int mid=(l+r)/2; M xyN\Mq'
if(l==r) return ; =6aS&B(SN
mergeSort(data,temp,l,mid); spasB=E
mergeSort(data,temp,mid+1,r); A'G@uD@3
for(int i=l;i<=r;i++){ Cy*|&=>j
temp=data; l>Ub!^;
} 0IQ'3_
int i1=l; {.yStB.T
int i2=mid+1; ]xguBh ]
for(int cur=l;cur<=r;cur++){ /y^7p9Z`
if(i1==mid+1) F:6SPY
y
data[cur]=temp[i2++]; 1 sPdz
L
else if(i2>r) bT
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data[cur]=temp[i1++]; FQ>`{%>
else if(temp[i1] data[cur]=temp[i1++]; bzdb|I6Z
else 0i8LWX_M
data[cur]=temp[i2++]; ^
wY[3"{
} /r12h|
} v)2M1
`vc
"Q/
} b)9'bJRvU
PMfkA!.Y
改进后的归并排序: W>q HFoKa
6sa"O89
package org.rut.util.algorithm.support; ~G27;Npy
8foJ I^3
import org.rut.util.algorithm.SortUtil; YC_1Ks
;<0LXYL;
/** 'R&uD~Q
* @author treeroot Yq(G;mjM
* @since 2006-2-2 /m!Cc/Hv
* @version 1.0 lo'W1p
*/ hDV20&hq
public class ImprovedMergeSort implements SortUtil.Sort { 8ssJ<LP
<cA/<3k)
private static final int THRESHOLD = 10; J)mhu}
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/* v\`9;QV5
* (non-Javadoc) p-+K4
* 8EVgoJ.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BL 3gKx.'
*/ a,78l@d(
public void sort(int[] data) { TNQP"9[?
int[] temp=new int[data.length]; s}pIk.4ot!
mergeSort(data,temp,0,data.length-1); D1nq2GwS
} w,R[C\#J
?YeWH
WM
private void mergeSort(int[] data, int[] temp, int l, int r) { !Ci~!)$z6
int i, j, k; 6rS$yjTX!
int mid = (l + r) / 2; OLI$1d_
if (l == r) eHDef
return;
^Q&u0;OJ
if ((mid - l) >= THRESHOLD) e)E$}4
mergeSort(data, temp, l, mid); w,Ee>cV]a
else v:+~9w+
insertSort(data, l, mid - l + 1); !45.puL0
if ((r - mid) > THRESHOLD) 7bDHXn
mergeSort(data, temp, mid + 1, r); wu"&|dt
else b=3H
insertSort(data, mid + 1, r - mid); _,</1~.
nNXgW
for (i = l; i <= mid; i++) { *'"^NSJ
temp = data; <, 3ROo76
} c^`]`xiX
for (j = 1; j <= r - mid; j++) { %7O?JI[
temp[r - j + 1] = data[j + mid]; uIU5.\"s
} ki>~H!zB
int a = temp[l]; #2iD'>bQ
int b = temp[r]; wp7!>%s{
for (i = l, j = r, k = l; k <= r; k++) { |a{Q0:
if (a < b) { )/t?!T.[
data[k] = temp[i++]; C;(t/zh
a = temp; 42L
@w
} else { eSW{Cb
data[k] = temp[j--]; $`Ix:gi
b = temp[j]; fL]Pztsk+
} _w*}\~`=^
} I5h[%T
} [%&ZPJT%i
@]bPVG?d
/** g:0#u;j^7
* @param data Zf5`XslA.
* @param l 2c?qV
* @param i d,$d~alY
*/ ,.gQ^^+=
private void insertSort(int[] data, int start, int len) { 'EFyIVezg9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); } G<rt
} id?h >g
} xooY'El*#
} yUPIY:0
} jjM{]
aTBR|US
堆排序: {-BRt)L[
f3|@|'
;
package org.rut.util.algorithm.support; -l}IZY
[=%TnT+^9
import org.rut.util.algorithm.SortUtil; _20#2i&
vy,&N^P
/** $)H@|<K
* @author treeroot dJ?XPo"Cm=
* @since 2006-2-2 }KhjlPhx
* @version 1.0 7H>@iI"?
*/ n[YEOkiG
public class HeapSort implements SortUtil.Sort{ yz2Ci0Dwy
:iR \%
/* (non-Javadoc) !gnj]k&/c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o->\vlbD
*/ $Ci0I+5w
public void sort(int[] data) { X,8<oX1r
MaxHeap h=new MaxHeap(); ,7XtH>2s
h.init(data); SR*wvQnOx
for(int i=0;i h.remove(); ?|e'Gbb_
System.arraycopy(h.queue,1,data,0,data.length); (Z5##dS3
} @E.k/G!~Nb
1
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private static class MaxHeap{ ! Q<>3xZ
lcV<MDS
void init(int[] data){ ET];%~ ^
this.queue=new int[data.length+1]; &uUo3qXQ5l
for(int i=0;i queue[++size]=data; >yJ9U,Y
fixUp(size); mJB2)^33a
}
fI\9\x
} ^`f*'Z
%<8nF5
private int size=0; !A1)|/a@
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private int[] queue; - y9>;6
n}xhW'3hU=
public int get() { ?OdJqw0,G
return queue[1]; /=uMk]h
} Vx_rc%'
f.GETw
public void remove() { F_uY{bg
SortUtil.swap(queue,1,size--); 3?E8\^N\n
fixDown(1); j]0^y}5f+s
} .}')f;jH5<
file://fixdown fA48(0p
private void fixDown(int k) { 80M;4nH^5
int j; R_sC! -
while ((j = k << 1) <= size) { 2wqk,c[]
if (j < size %26amp;%26amp; queue[j] j++; .lhn;*Yi
if (queue[k]>queue[j]) file://不用交换 ^[Cv26
break; w<9>Q1(
SortUtil.swap(queue,j,k); 5BR5X\f0
k = j; juBw5U<
} ZDL']*)'
} U}Hwto`R
private void fixUp(int k) { x ]5@>5
while (k > 1) { $N2SfyX7
int j = k >> 1; 9{j66
if (queue[j]>queue[k]) ,%bhyww<
break; U=sh[W
SortUtil.swap(queue,j,k); i~J;G#b
k = j; YGc^h(d
} ^% Q|s#w.
} B~'MBBD"
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} (yo;NKq,@
<ktzT&A
} )x#5Il
H
]<DNo&fw
SortUtil: 9]$8MY
a'\By?V]
package org.rut.util.algorithm; ')S;[= v
vhr+g 'tf
import org.rut.util.algorithm.support.BubbleSort; }G$]LWgQx
import org.rut.util.algorithm.support.HeapSort;
yz+, gLY
import org.rut.util.algorithm.support.ImprovedMergeSort; "x'),
import org.rut.util.algorithm.support.ImprovedQuickSort; h x6;YV
import org.rut.util.algorithm.support.InsertSort; b=a!j=-D
import org.rut.util.algorithm.support.MergeSort; ea=83 Zj
import org.rut.util.algorithm.support.QuickSort; Wi n8LOC
import org.rut.util.algorithm.support.SelectionSort; 0%s|Zbo!>
import org.rut.util.algorithm.support.ShellSort; &$`hQgi
{+zJI-XN/
/** *5$&`&,
* @author treeroot AgF5-tz6x
* @since 2006-2-2 +)nT|w45
* @version 1.0 !\[+99F#
*/ ~`Qko-a&
public class SortUtil { M^rM-{?<
public final static int INSERT = 1;
>95TvJ
public final static int BUBBLE = 2; Hg}I]!B
public final static int SELECTION = 3; +w|9x.&W
public final static int SHELL = 4; V's:>;
public final static int QUICK = 5; XC15 K@K
public final static int IMPROVED_QUICK = 6; FDFH,J`_
public final static int MERGE = 7; RaSz>-3d
public final static int IMPROVED_MERGE = 8; e2$]g>
public final static int HEAP = 9; .V6-(d
gM;}#>6
public static void sort(int[] data) { XM
Vq-8B0
sort(data, IMPROVED_QUICK); [AEBF2OIv
} TY;U2.Ud
private static String[] name={ NCA{H^CL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @D`zKYwX1
}; i`%.
j&6 jRX
private static Sort[] impl=new Sort[]{ &;H{cv`
new InsertSort(), Iy
{U'a!
new BubbleSort(), ZeasYSo4P
new SelectionSort(), $7I]`Jt
new ShellSort(), _8K%`6!"Z
new QuickSort(), 9Z\z96O-
new ImprovedQuickSort(), V'Y{v
new MergeSort(), *.y' (tj[
new ImprovedMergeSort(), aI#4H+/
new HeapSort() #`tD1T{;
};
yeD_j/
'Tb0-1S?
public static String toString(int algorithm){ c-XLI
return name[algorithm-1]; FYPz 4K
} E(+T*
)&W|QH=AI
public static void sort(int[] data, int algorithm) { e/e0d<(1
impl[algorithm-1].sort(data); Pn TZ/|
} jeN1eM8WI
6(56,i<#/
public static interface Sort { h\,5/ )Y
public void sort(int[] data); VlW9UF-W
} 'zSgCgCHX8
;np_%?is
public static void swap(int[] data, int i, int j) { `rWB`q|i<
int temp = data; n~z\?Y=*
data = data[j]; G=M] 8+h
data[j] = temp; 4 9w=kzo
} YaFcz$GE_
} -oBI+v&