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。 l<+[l$0#
插入排序: A3a/ /e
:hZM$4
package org.rut.util.algorithm.support; m
!*F5x
BYq80Vk%@
import org.rut.util.algorithm.SortUtil; mKZzSd)p
/** eTa_RO,x
* @author treeroot @:}c(j
* @since 2006-2-2 y|6n:<o
* @version 1.0 .G[/4h :.
*/ nqo{]fn
public class InsertSort implements SortUtil.Sort{ ='h2z"}\Bn
NfvPE ]S
/* (non-Javadoc) :*}Q/]N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =x8[%+
*/ \ASt&'E
public void sort(int[] data) { c*)T4n[e
int temp; %
"(&a'B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g{Hgs
} /TpTR-\I0
} s(=wG|
} $X#y9<bW
5bLNQz\WJ
} 1p}H,\o
|(.\J`_e
冒泡排序:
Z_q+Ac{p
=P(*j7=
package org.rut.util.algorithm.support; f!x9%
Z A(u"T~
import org.rut.util.algorithm.SortUtil; Z~J]I|R:
r^~+<"
/** >5CK&6
* @author treeroot e=0]8l>\V
* @since 2006-2-2 %y RGN
* @version 1.0 XRV]u|w=g
*/ 3+ 6Ed;P
public class BubbleSort implements SortUtil.Sort{ ]{1{XIF
5%I3eL%s
/* (non-Javadoc) 1"H;Tr|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .?45:Ey~g
*/ ^lHy)!&A
public void sort(int[] data) { <o%T]
int temp; t8*Jdd^3Z/
for(int i=0;i for(int j=data.length-1;j>i;j--){ %zcA|SefP
if(data[j] SortUtil.swap(data,j,j-1); jKq*@o~}
} [|Qzx w9
} }^&S^N7
} izl6L
} 4CM'I~
RCWmdR#}V
} )pHtsd. eP
1{a%V$S[
选择排序: DG;7+2U
C8-7XQ=B:b
package org.rut.util.algorithm.support; oai=1vt@
|oPRP1F-;e
import org.rut.util.algorithm.SortUtil; GKt."[seV
36=aahXd\
/** `;UWq{"
* @author treeroot pQiC#4b
* @since 2006-2-2 ]DVr-f
~
* @version 1.0 \qG?'Iy
*/ "/'3I/}
public class SelectionSort implements SortUtil.Sort { (7R?T}
y#GHmHeh
/* lb_N"90p
* (non-Javadoc) OH
t)z.
* i\sBey ND"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Af _4Z]F
*/ I\mF dE
public void sort(int[] data) { QC+
Z6WS;
int temp; /JR+WmO
for (int i = 0; i < data.length; i++) { 5NhFjPETr
int lowIndex = i; %66="1z0@
for (int j = data.length - 1; j > i; j--) { t /+;#-
if (data[j] < data[lowIndex]) { XKWq{,Ks
lowIndex = j; *{ rorir
} al2lC#Sy
} xgk~%X%K
SortUtil.swap(data,i,lowIndex); U,#~9
} 2z-Nw <bA
} p\&O;48=
4LTm&+(5
} %,T*[d&i
B\Nbt!Ps
Shell排序: '7?Y+R@|L
,:t,$A
package org.rut.util.algorithm.support; Z*k(Q5&U
k'o[iKlu
import org.rut.util.algorithm.SortUtil; (ghI$oH
1B;2 ~2X
/** RcYUO*
* @author treeroot A*OqUq/H`;
* @since 2006-2-2 -#ZLu.
* @version 1.0 *`H*@2
*/ ,6>3aD1w~q
public class ShellSort implements SortUtil.Sort{ =z'(FP5!0
VVeJe"!t
/* (non-Javadoc) uPfz'|,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TE
Z%|5(]
*/ F vkyp"W3
public void sort(int[] data) { wKM9fs
for(int i=data.length/2;i>2;i/=2){ =|?`5!A
for(int j=0;j insertSort(data,j,i); P73GH
} qX@e+&4P0
} /PwiZA3sA
insertSort(data,0,1); %/A>'p,~
} 16L YVvmW
O(-p
md,
/** IhNX~Jg'^
* @param data 5MnP6(3$
* @param j -.h)CM@L
* @param i vD#U+
*/ ^\ [p6>
private void insertSort(int[] data, int start, int inc) { l eC!Yj
int temp; [.}qi[=n
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1$0Kvvg[
} +pR,BjY
} x9 > ho
} =ANr|d
o|@0.H|
} =o9s?vOJ
SoU(fI[6
快速排序: =Kkqk
y RxrfAdS
package org.rut.util.algorithm.support; jSp&\Wj b
a
8k2*u
import org.rut.util.algorithm.SortUtil; "u6pl);G
rDWAZ<;;
/** $'V^_|EL7
* @author treeroot _pTcSp3
* @since 2006-2-2 <odi>!ViH
* @version 1.0 XM:BMd|
*/ 0f@+o}i=)
public class QuickSort implements SortUtil.Sort{ uY5|Nmiu
JK!(\Ae.
/* (non-Javadoc) !)]/?&uo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NVM_.vL
*/ %
G=cKM
public void sort(int[] data) { C!+D]7\j
quickSort(data,0,data.length-1); @7nZjrH
} 63oe0T&
private void quickSort(int[] data,int i,int j){ PLz{EQ[cV
int pivotIndex=(i+j)/2; k?fz @H8D(
file://swap j#//U2VdN
SortUtil.swap(data,pivotIndex,j); TQ(q[:>
%tVU Rj
int k=partition(data,i-1,j,data[j]); FDl/7P`b(
SortUtil.swap(data,k,j); C'I&<
if((k-i)>1) quickSort(data,i,k-1); \*t\=4
if((j-k)>1) quickSort(data,k+1,j); DSLX/uo1
XY'=_5t
}
fJ*^4
/** O<$w-(
* @param data d ~M;
* @param i .:?v;rYk{
* @param j E>_Rsw *
* @return l!,tssQ
*/ ZD&F ,2v
private int partition(int[] data, int l, int r,int pivot) { $V87=_}
do{ O!"K'Bm
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
:tZsSK
SortUtil.swap(data,l,r); d#T5=5#
} J,W$\V]p
while(l SortUtil.swap(data,l,r); toY_1
return l; ^&<M""Z
} ?$/::uo
qArR5OJ
} gkmof^
U;bx^2<m
改进后的快速排序: )xcjQkb
VZqCFE3
package org.rut.util.algorithm.support; &4OJJ9S
Ar>B_*dr
import org.rut.util.algorithm.SortUtil; 7]rIq\bM
nFlN{_/
/** p7YYAh@x\
* @author treeroot k1z`92"
* @since 2006-2-2 lj]M 1zEz&
* @version 1.0 v`oilsrc
*/ .JKH=?~\
public class ImprovedQuickSort implements SortUtil.Sort { fn<dr(Dx
JzEg`Sn^
private static int MAX_STACK_SIZE=4096; E{V?[HcWq
private static int THRESHOLD=10; :P-H8*n""
/* (non-Javadoc) iFUiw&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3V]dl)en%
*/ }Cu:BD.zQ
public void sort(int[] data) { uf?;;wg
int[] stack=new int[MAX_STACK_SIZE]; sK%b16#
P.YT/
int top=-1; Z RjM^
d;
int pivot; +k6`
tl~*
int pivotIndex,l,r; C
O6}D
4S42h_9
stack[++top]=0; O]XRalkEM
stack[++top]=data.length-1; sNx_9pJs4
W7!Rf7TK
while(top>0){ 807+|Ol[
int j=stack[top--]; HW[&q
int i=stack[top--]; '_?Z{|
2(d
pivotIndex=(i+j)/2; UwW@}cy,L
pivot=data[pivotIndex]; ;jgf,fbM
pBAAwHD
SortUtil.swap(data,pivotIndex,j); Sv#MlS>
N-l`U(Z~P
file://partition yM 7{v$X0
l=i-1; L$Z!
r=j; i5 r<CxS
do{ rT R$\ [C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \Hb!<mrp
SortUtil.swap(data,l,r); <J d!`$
} jIaaNO)
while(l SortUtil.swap(data,l,r); 2}<tzDI'
SortUtil.swap(data,l,j); N%Bl+7,q
fOMaTnm'
if((l-i)>THRESHOLD){ 6KGT?d
stack[++top]=i; oJM;CN
stack[++top]=l-1; L/fXP@u
} iJOoO"Ai
if((j-l)>THRESHOLD){ 5%D`y|
stack[++top]=l+1; yPmo1|'X>d
stack[++top]=j; 3F,M{'q
} ;jxX /c
2+u+9 rW
} @~gPZm
file://new InsertSort().sort(data); d %}?%VH
insertSort(data); $/^Y(0
} 3q4VH q
/** DvhFCA}z
* @param data 1[OY -G
*/ MVMJl ">
private void insertSort(int[] data) { !43nL[]
int temp; +m
J G:n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
_*}D@yy&
} w5q6c%VZ
} 6\l F
} t_ CMsp
#>_t[9;
} mqeW,89
();Z,A
归并排序: 2L^/\!V#
>W+,(kAS
package org.rut.util.algorithm.support; &LM@xt4"^[
VXCB.C"
import org.rut.util.algorithm.SortUtil; #HL$`&m
0qR#o/~I
/** X,@nD@
* @author treeroot @j\;9>I/
* @since 2006-2-2 3^Is4H_8
* @version 1.0 tY#&_%W
*/ #}.{|'L
public class MergeSort implements SortUtil.Sort{ R;AcAJ;
lYe2;bu
/* (non-Javadoc) @}jg5}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yq, qS0Fo
*/ <.g)?nj1
public void sort(int[] data) { <Y /3U
int[] temp=new int[data.length]; DaH4 Br.2
mergeSort(data,temp,0,data.length-1); >l}v
_k*~B
} L7- JK3/E
3q'nO-KJ
private void mergeSort(int[] data,int[] temp,int l,int r){ ral=`/p
int mid=(l+r)/2; FXk*zXn6
if(l==r) return ; v+EJ
$
mergeSort(data,temp,l,mid); y=8KNseW|
mergeSort(data,temp,mid+1,r); gs}&a3d7k
for(int i=l;i<=r;i++){ B$c'^
)
temp=data; #U'}g *
} L?N:4/0;!
int i1=l; *#p}FB2H#
int i2=mid+1; D0\*WK$
for(int cur=l;cur<=r;cur++){ 7.{+8#~nV
if(i1==mid+1) F6{
O
data[cur]=temp[i2++]; _0 [s]
else if(i2>r) /W>?p@j+K
data[cur]=temp[i1++]; aIT0t0.
else if(temp[i1] data[cur]=temp[i1++]; v3~`1MM
else r
*N@%T
data[cur]=temp[i2++]; T#E,^|WEk
} M+-odLltw
} cl23y}J_?
c(Xm~
'jeH
} vzAY+EEx
1OY
5tq
改进后的归并排序: z xgDaT
m k~F@
package org.rut.util.algorithm.support; 0I)eYksh
Lz9|"F"V
import org.rut.util.algorithm.SortUtil; iMM9a;G+
j~rW
2(
/** NxH%%>o>
* @author treeroot xE_~.EoB
* @since 2006-2-2 </9c=GoJ
* @version 1.0 sNG 7fi.|
*/ O?#<kmd/)
public class ImprovedMergeSort implements SortUtil.Sort { =585TR;
V
9u^za!pE
private static final int THRESHOLD = 10; U2Siw
M;g"rpM
/* )fuAdG
* (non-Javadoc) 4,`t9f^:
* j0cB#M44
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +IGSOWL
*/ CW@EQ3y0
public void sort(int[] data) { ;[C_ho
int[] temp=new int[data.length]; nKwOSGPQt
mergeSort(data,temp,0,data.length-1); zcV~)go6
} !y1qd
TD ;u"
private void mergeSort(int[] data, int[] temp, int l, int r) { OS~Z@'Eg
int i, j, k; Fyz1LOH[X
int mid = (l + r) / 2; FLumI-se!
if (l == r) 8N<2RT8W
return; .4z_ohe
if ((mid - l) >= THRESHOLD) ^6UE/4x!y
mergeSort(data, temp, l, mid); fob.?ID-;
else &)Vuh=
insertSort(data, l, mid - l + 1); T~lHm
if ((r - mid) > THRESHOLD) %
y` tDR
mergeSort(data, temp, mid + 1, r); 74Aecb{
else IjPtJwW`A
insertSort(data, mid + 1, r - mid); QF.M%she+
_Pw5n
mH c
for (i = l; i <= mid; i++) { R,hwn2@B
temp = data; gfXit$s
} /u"K`y/*j\
for (j = 1; j <= r - mid; j++) { /KgP<2p
temp[r - j + 1] = data[j + mid]; '8^>Z.~V
} fQf d1=4
int a = temp[l]; 5'rP-z~
u
int b = temp[r]; E_xCRfw_i]
for (i = l, j = r, k = l; k <= r; k++) { AhVV
if (a < b) { P#KTlH
data[k] = temp[i++]; mnYzn[d3U
a = temp; R"`<ZY6(Ou
} else { 0$R}_Ok
data[k] = temp[j--]; Nk\/lK\
b = temp[j]; I~M@v59C
} F{17K$y
} X5)].[d
} k
_Bz@^J
2reQd47
/** t] G hONN
* @param data v00w
GOpW
* @param l J.,7d ,
* @param i U)S!@2(4
*/ /a-OBU
private void insertSort(int[] data, int start, int len) { 7@!ne&8Z?
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V?Ca[
} %vWh1-
} #"JtH"pF
} !y;xt?
} /:w.Zf>B9
KFHcHz
堆排序: l !R >I7
78zwu<ET
package org.rut.util.algorithm.support; D89(u.h
PAjH*5IA
import org.rut.util.algorithm.SortUtil; 0e~4(2xK
Q$S|L C
/** D14i]
* @author treeroot \avgXndI
* @since 2006-2-2 8Dc'"3+6
* @version 1.0 -H](2}
*/ FHyyZ{"
public class HeapSort implements SortUtil.Sort{ s+]6X*)
HqKD]1
/* (non-Javadoc) tc<HA7vpt~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )cRP6 =
*/ 1NU@k6UHl
public void sort(int[] data) { }ILg_>uq[
MaxHeap h=new MaxHeap(); $s9YU"
h.init(data); :}~B;s0M\
for(int i=0;i h.remove(); [G}l;
System.arraycopy(h.queue,1,data,0,data.length); k%sh;1.
} uRRp8hht
#7,;/rtO7
private static class MaxHeap{ 8CGjI?j
|D[4G6&
void init(int[] data){ iJEKLv
this.queue=new int[data.length+1]; MryY<s
for(int i=0;i queue[++size]=data; 5tu 4uYp;
fixUp(size); sxn^1|O;m
} qa)Qf,`
} 9d >AnTf&H
:LMLY<8>9
private int size=0; 6+_qGV
Ub*O*nre
private int[] queue; CW;=q[+w
hT$/ B|
public int get() { >0jg2vqt
return queue[1]; :)Z.!
} b#{[Pk,w9
)p+6yH
public void remove() { drf?7%v
SortUtil.swap(queue,1,size--); 3q$"`w
fixDown(1); ]=T-Cv=t
} 5(&'/U^
file://fixdown UNKr
FYl
private void fixDown(int k) { A@#D_[~
int j; nG !6[^D
while ((j = k << 1) <= size) { }SBpc{ch
if (j < size %26amp;%26amp; queue[j] j++; ^@n?&
if (queue[k]>queue[j]) file://不用交换 LHgEb9\Q
break; nv2p&-e+
SortUtil.swap(queue,j,k); Y.v. EZ
k = j; xa|/P#q
} ?LA`v_
} jun$CY4
private void fixUp(int k) { 5"I8ric
while (k > 1) { z !:%Hbh=
int j = k >> 1; L{AfrgN
if (queue[j]>queue[k]) _';oT*#
break; ,e5#wz
SortUtil.swap(queue,j,k); !p|d[
k = j; :]k`;;vh
} gKWsmx!["
} :PF6xL&
OykYXFv*
} 3=xN)j#B
>]S-a-|Bp
} ,5HC&@
1wM~),B8
SortUtil: E)utrO R
;-!j,V+$h
package org.rut.util.algorithm; I<^&~==
]Geg;[t
import org.rut.util.algorithm.support.BubbleSort; @Xj6h!"R
import org.rut.util.algorithm.support.HeapSort; ;dE'# Kb
import org.rut.util.algorithm.support.ImprovedMergeSort; ;ax%H @o
import org.rut.util.algorithm.support.ImprovedQuickSort; z)U/bjf
import org.rut.util.algorithm.support.InsertSort; Sk|DVV$
import org.rut.util.algorithm.support.MergeSort; wDz}32wB
import org.rut.util.algorithm.support.QuickSort; UbSAyf
import org.rut.util.algorithm.support.SelectionSort; ftwn<B
import org.rut.util.algorithm.support.ShellSort; ,f?+QV\T.
f{eMh47 NC
/** U
*']7-
* @author treeroot E|l qlS7
* @since 2006-2-2 =& =#G3f
* @version 1.0 y?@(%PTp
*/ ?0k4l8R
public class SortUtil { brt1Kvu8(
public final static int INSERT = 1; TuX9:Q
public final static int BUBBLE = 2; Rt2<F-gY
public final static int SELECTION = 3; af<wUxM0
public final static int SHELL = 4; -Ay=*c.4
public final static int QUICK = 5; ^4 ?LQ[t'
public final static int IMPROVED_QUICK = 6; @fO[{V
public final static int MERGE = 7; l.`f^K=8
public final static int IMPROVED_MERGE = 8; A~MIFr /8
public final static int HEAP = 9; ym.:I@b?6
j$jgEtPK9=
public static void sort(int[] data) { +_ZXzzcO<
sort(data, IMPROVED_QUICK); 8|Vm6*TY&p
} Y$&+2w,)H,
private static String[] name={ s(MLBV5)w
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3}9c0%}F
}; o/5loV3h
1&Ruz[F5
private static Sort[] impl=new Sort[]{ 7\nR'MOZ
new InsertSort(),
Tq*K
=^
new BubbleSort(), P{gy/'PH,
new SelectionSort(), C3>`e3v
new ShellSort(), =#|K-X0d=
new QuickSort(), ~s4o1^6L
new ImprovedQuickSort(), :#&Y
new MergeSort(), J2d3&6
new ImprovedMergeSort(), T.x"a$AU
new HeapSort() HHcWyu
}; oQ"J>`',
~|5B
public static String toString(int algorithm){ -J\R}9 lIm
return name[algorithm-1]; qVMBZ\`Qm
} bL9vjD'}
;'~GuZ#I
public static void sort(int[] data, int algorithm) { *Y/}EX!F
impl[algorithm-1].sort(data); 7t~12m8x
} LOf)D7T
W5_aS2$
public static interface Sort { VYC$Q;Z
public void sort(int[] data); %kSpMj|
} ipdGAG
C|hD^m
public static void swap(int[] data, int i, int j) { 1}Mdo&:t
int temp = data; fA{t\
data = data[j]; q6a7o=BP]
data[j] = temp; PG*:3![2
} I' TprT
} asd3J