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。 mc=!X
插入排序: IQi[g~E.5
QD;f~fZ
package org.rut.util.algorithm.support; U[e8K
$x_52 j\j
import org.rut.util.algorithm.SortUtil; 5v>{Z0TE[6
/** )C01fZhD
* @author treeroot &G@-yQ
* @since 2006-2-2 U>_\
* @version 1.0 )\D40,p
*/ s@)"IdSA(
public class InsertSort implements SortUtil.Sort{ <,4R2'
:_QAjU
/* (non-Javadoc) fzFvfMAU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fx[A8G
*/ ZH$sMh<xg
public void sort(int[] data) { c<h!QnJ
int temp; #u<oEDQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F2PLy
q
} sAD P~xvU
} o&XMgY~
} [
4Y
`O
bDFCZH-:'O
} q~Q)'*m
bhqq
冒泡排序: iy.%kHC
!,6v=n[Nz
package org.rut.util.algorithm.support; dp[w?AMhM9
4I#eC#"
import org.rut.util.algorithm.SortUtil; 8pq-nuf|K
$nfBvf
/** 4$?wD <
* @author treeroot d(DX(xg
* @since 2006-2-2 ^QXw[th!d
* @version 1.0 4g 6ksdFQ
*/ pe!dm}!h[
public class BubbleSort implements SortUtil.Sort{ V@f6Lj
hM36QOdm
/* (non-Javadoc) $['7vcB^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $p0 /6c
*/ _Vo)<--+I
public void sort(int[] data) { K{zCp6
int temp; (!0j4'
for(int i=0;i for(int j=data.length-1;j>i;j--){ :PFx&
if(data[j] SortUtil.swap(data,j,j-1); +w k]iH
} UKKSc>D1
} L8bI0a]r"*
} CrNwALx
} up3?$hUc.
l- 1]w$
y
} j Ne(w<',P
M q^|M~
选择排序: tIGVB+g{F
':!3jZP"m
package org.rut.util.algorithm.support; (Pk"NEP
S(>@:`=
import org.rut.util.algorithm.SortUtil; m feMmKFu\
CYPazOfj
/** d)04;[=
* @author treeroot m/YH^N0
* @since 2006-2-2 ]DC;+;8Jc
* @version 1.0 @cuD8<\i
*/ HDF!`
public class SelectionSort implements SortUtil.Sort { $=PWT-GIR
J+)'-OFt0
/* lX98"}
* (non-Javadoc) &jV9*
* b&lN%+%}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0W T#6D
*/ :vc[/<
public void sort(int[] data) { XYqpI/s
int temp; dSOlD/c
for (int i = 0; i < data.length; i++) { !;o\5x<'$O
int lowIndex = i; ;YK!EMM4!h
for (int j = data.length - 1; j > i; j--) { 7$!`p,@we/
if (data[j] < data[lowIndex]) { NXzU0
lowIndex = j;
2[Z0I4r
} cS<TmS!
} Xw7{R
SortUtil.swap(data,i,lowIndex); "s F Xl
} ?mH@`c,fM
} ,M\j%3
cQ8dc+ {
} 5cD
XWF
HQq`pG%m6
Shell排序: 1<xcMn0et
z 0~j
package org.rut.util.algorithm.support; "'['(e+7
Wgxn`6
import org.rut.util.algorithm.SortUtil; I"Q#IvNw
<=q*N;=T,
/** r%0pQEl
* @author treeroot m)s
xotgXf
* @since 2006-2-2 :
@'fpN
* @version 1.0 PC*m%
?+
*/ *;<e
'[Y7f
public class ShellSort implements SortUtil.Sort{ 12 idM*
vG Y!4@[
/* (non-Javadoc) 's)fO#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mv|vRx^b
*/ 82lr4
public void sort(int[] data) { r=h8oUNEJ*
for(int i=data.length/2;i>2;i/=2){ TbOJp
for(int j=0;j insertSort(data,j,i); M]c7D`%s
} XZ}de%U1
} +H7y/#e+3
insertSort(data,0,1); 4[`[mE18.
} YU&4yk lE
r,5-XB
/** 9o EpPL5
* @param data sF y]+DB
* @param j ~%`EeJwT
* @param i M~-h-tG
*/ S#k{e72 *
private void insertSort(int[] data, int start, int inc) { H ZPcd_(
int temp; *2`:VFEV
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pjACFVMFX
} v{o? #Sk1
} d>&\V)E
} iAK/d)bq
5:c;RRn
} B~?c3:6
L_^`k4ct
快速排序: Vc| NL^
/9 pbnzn
package org.rut.util.algorithm.support;
=^Th[B
V~85oUc\-
import org.rut.util.algorithm.SortUtil; 6J\q`q(W(
pw=F' Y@N
/** y`rL=N#
* @author treeroot ^p,3)$
* @since 2006-2-2 mbyih+amCr
* @version 1.0 8)pB_en3sO
*/ /l^y}o %?
public class QuickSort implements SortUtil.Sort{
YZ<
NP
e8{^f]5
/* (non-Javadoc) ojoxXly`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45)D+
*/ pw3(t
public void sort(int[] data) { wlr Ign%
quickSort(data,0,data.length-1); iT.|vr1HG
} j{)~QD ?
private void quickSort(int[] data,int i,int j){ >yKpM }6l{
int pivotIndex=(i+j)/2; a%E8(ms37y
file://swap Pu..NPl+
SortUtil.swap(data,pivotIndex,j); 4:U0f;Fs
`E W!-v)
int k=partition(data,i-1,j,data[j]); 9:-T@u
SortUtil.swap(data,k,j); VHW`NP 5Jl
if((k-i)>1) quickSort(data,i,k-1); kon5+g9q
if((j-k)>1) quickSort(data,k+1,j); 9 ZGV%Tw
4[1k\
} y@A6$[%(E|
/** y@3kU*-1
* @param data Y
9i][
* @param i y\#o2PVmY
* @param j `VZZ^K9zR
* @return Fc'[+L--Q
*/ >jMH#TZaX
private int partition(int[] data, int l, int r,int pivot) { GJ `UO
do{ ]_u`EvEx6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~^$MA$ /p
SortUtil.swap(data,l,r); bnr|Y!T}Bi
} :tLbFW[
while(l SortUtil.swap(data,l,r); N@()F&e
return l; ;&kn"b}G;
} mgVML&^
K_#UZA< Y
} &$#99\/
5
`=KyHi:b
改进后的快速排序: Pq?*C;D
v459},!P
package org.rut.util.algorithm.support; y]'CXCml)
^f|<R8 `
import org.rut.util.algorithm.SortUtil; C3}Aq8$6
J`<f
/** a#y{pT2 b
* @author treeroot f`|G]da-3o
* @since 2006-2-2 7Z0/(V.-
* @version 1.0 Z`s!dV]e9
*/ 9p`r7:
public class ImprovedQuickSort implements SortUtil.Sort { <hv7s,i
J=*K"8Qr
private static int MAX_STACK_SIZE=4096; e$|VG*
d
private static int THRESHOLD=10; i&&qbZt
/* (non-Javadoc) y5u\j{?Te
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uh}X<d/V
*/ DYRE1!
public void sort(int[] data) { M|r8KW~S)
int[] stack=new int[MAX_STACK_SIZE]; /{X_
.fv<v
7'OPjtM
int top=-1; !ZrB^?sO
int pivot; N9]xJgTze
int pivotIndex,l,r; ETp'oh}?
Rp/-Pv
stack[++top]=0;
$Nu)E
stack[++top]=data.length-1; 5pJ*1pfeo
l^r' $;<m
while(top>0){ t5)J;0/
int j=stack[top--]; +(mL~td01
int i=stack[top--]; :woa&(wN;1
%
{Q-8w!
pivotIndex=(i+j)/2; K@r*;T
pivot=data[pivotIndex];
maDz W_3
Km*<Kfcz
SortUtil.swap(data,pivotIndex,j); wL2XNdo}<
Ei~f`{i
file://partition e<5Y94YE
l=i-1; U9#WN.noG
r=j; SRCOs1(EK9
do{ HmV />9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K"l0w**Og#
SortUtil.swap(data,l,r); @ Nb%L&=P8
} nbxR"UH
while(l SortUtil.swap(data,l,r); VXIQw'Cq
SortUtil.swap(data,l,j); NHkL24ve
Zq*eX\#C
if((l-i)>THRESHOLD){ sKfXg`0
stack[++top]=i; s;{K!L@
stack[++top]=l-1; CLN+I'uX0
} =nVmthGw
if((j-l)>THRESHOLD){ ow.6!tl0=h
stack[++top]=l+1; <y>:B}9'
stack[++top]=j; f0oek{
} Fe$/t(
n}J^6:1
} daX*}Ix
file://new InsertSort().sort(data); Coa -8j*R7
insertSort(data); >.LKct*5K
} sR*Nq5F#9
/** CBHc A'L
* @param data -&Gfh\_NW
*/
(ZPXdr
private void insertSort(int[] data) { \0AiCMX[
int temp; TnE+[.Qu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _!AJiP3!)4
} oJY[{-qW
} }*kJ-q&0
} z\.1>/Z=
b3U6;]|x
} RJc%,
]:
1^{`lK~2
归并排序: OVs wt
=n0*{~r
package org.rut.util.algorithm.support; 2)\vj5<~$
7g6RiH}
import org.rut.util.algorithm.SortUtil; gfo}I2"
77We;a
/** "mZ.V
* @author treeroot kx{!b3"
* @since 2006-2-2 ,Y!zORv<7
* @version 1.0 |}S1o0v{(a
*/ :vQM>9l7
public class MergeSort implements SortUtil.Sort{ QN
G&
xP@/9SM
/* (non-Javadoc) f a5]a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Do;#NLrWb
*/ =A n`D
public void sort(int[] data) { |:2c$zq
int[] temp=new int[data.length]; eXzXd*$S
mergeSort(data,temp,0,data.length-1); +hH}h?K
} ;<-7*}Dj
gdi`x|0
private void mergeSort(int[] data,int[] temp,int l,int r){ s4,(26y
int mid=(l+r)/2; _D-Riu>#J
if(l==r) return ; }lfn0 %(@
mergeSort(data,temp,l,mid); =`p&h}h-L
mergeSort(data,temp,mid+1,r); t[2i$%NVM
for(int i=l;i<=r;i++){ {;k_!v{
temp=data; +,_c/(P
} `&g:d E(j
int i1=l; #s+Q{2s
int i2=mid+1; zM59UQU;
for(int cur=l;cur<=r;cur++){ `K?1L{p'4
if(i1==mid+1) Yx1 D)
data[cur]=temp[i2++]; Efr&12YSS
else if(i2>r) )w"0w(
data[cur]=temp[i1++]; ZvH{wt
else if(temp[i1] data[cur]=temp[i1++]; ']?=[`#NL
else =Ahw%`/&}]
data[cur]=temp[i2++]; 8p=>?wG
} B>|5xpZM12
} cU+>|'f&
[hU=mS8=^
} }1>atgq]w
\_ -DyD#3
改进后的归并排序: V2<i/6~
~zyQ('
package org.rut.util.algorithm.support;
cht
,!>fmU`E4
import org.rut.util.algorithm.SortUtil; 0QoLS|voA/
kF-TG3
/** ./.=Rw
* @author treeroot 0j$OE
* @since 2006-2-2 =pp:j`B9(
* @version 1.0 `Bu9Nq
*/ AgsR-"uh
public class ImprovedMergeSort implements SortUtil.Sort { p7UTqKi
JZ K7uB,X
private static final int THRESHOLD = 10; v3^t/[e~:
%6 ]\^
/* *Sb2w*c>
* (non-Javadoc) Nza; O[
* qLRE}$P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *<kD"m
*/ }ecsGw
public void sort(int[] data) { {^wdJZ~QLK
int[] temp=new int[data.length]; .,mM%w,^O
mergeSort(data,temp,0,data.length-1); ]) n0MF)p
} IMaYEO[
UTX](:TC
private void mergeSort(int[] data, int[] temp, int l, int r) { UE7'B?
int i, j, k; sVoR?peQ
int mid = (l + r) / 2; g)cY\`&W8
if (l == r) CB({Rn
return; ohplj`X[21
if ((mid - l) >= THRESHOLD) W.$6pzB(
mergeSort(data, temp, l, mid); fq(5Lfe}
else G>0)I
insertSort(data, l, mid - l + 1); NL-_#N$
if ((r - mid) > THRESHOLD) %~\
mergeSort(data, temp, mid + 1, r); WRM$DA
else ?cxr%`E
insertSort(data, mid + 1, r - mid); B^m!t7/,
$_bZA;EMQ
for (i = l; i <= mid; i++) { fz8h]PZ
temp = data; h--45`cE
} nNs .,J)
for (j = 1; j <= r - mid; j++) { l
$w/Fz
temp[r - j + 1] = data[j + mid]; cz>mhD
} cD8Ea(
int a = temp[l]; w&C1=v -h
int b = temp[r]; hiIyaWU
for (i = l, j = r, k = l; k <= r; k++) { Y"oDFo,
if (a < b) { B~rU1Y)
data[k] = temp[i++]; N"~ qoJO
a = temp; E[*0Bo]
} else { U1kh-8
:
data[k] = temp[j--]; ^k;mn-0
b = temp[j]; WP!il(Gr
} feN!_-
} oX*b<d{\N
} OF-WUa4t
nqeVV&b!
/** b?>VPuyBb
* @param data ]*GnmG:D*
* @param l \H[Yyp4
* @param i AbG &9=Ks
*/ R Y9.n
private void insertSort(int[] data, int start, int len) { My],6va^
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g+3Hwtl
} J7Sx!PQ
} [!Ao,rt?Vg
} =tHD 4I
} UtPwWB_YV
I<KCt2:X
堆排序: ;xI0\a7
'rvE
package org.rut.util.algorithm.support; G4O3h Y.`
}Wqtip:L
import org.rut.util.algorithm.SortUtil; s*eyTm
G-ZhGbAI7
/** xjE7DCmA
* @author treeroot 9LHa&""
* @since 2006-2-2 y%FYXwR{
* @version 1.0 `}Eh[EOHJ
*/ ys/vI/e\
public class HeapSort implements SortUtil.Sort{ @H6%G>K,
!L/tLHk+
/* (non-Javadoc) >I|<^$/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >ks3WMm
*/ b70AJe=
public void sort(int[] data) { n}f3Vrl
MaxHeap h=new MaxHeap(); 8'n#O>V@
h.init(data); d;<.;Od$`
for(int i=0;i h.remove(); ps"9;4P
System.arraycopy(h.queue,1,data,0,data.length); yZ ?$8r
} +hZ] B<$
"7:u0p!
private static class MaxHeap{ x~%\y
3eJ\aVI>pE
void init(int[] data){ fG3wc
l~
this.queue=new int[data.length+1]; /8:gVXZi
for(int i=0;i queue[++size]=data;
\_?yzgf
fixUp(size); =#jTo|~u4o
} b#e]1Q
} aE}=^%D
4^0\dq
private int size=0; `..EQBM
wQ@Zwbx
private int[] queue; *Gf&q
]!q
}|bP
public int get() { n&(3o6i'
return queue[1]; makaI0M
} 87R%ke
coW)_~U|
public void remove() { Hi$#!OU
SortUtil.swap(queue,1,size--); ^kc>m$HY
fixDown(1); JATS6-Lz`
} D\@e{.$MZ|
file://fixdown !,I7 ?O
private void fixDown(int k) { c]S+70!n
int j; Fka1]|j9
while ((j = k << 1) <= size) { jQO*oq}
if (j < size %26amp;%26amp; queue[j] j++;
b$PT_!d
if (queue[k]>queue[j]) file://不用交换 q/A/3/
break; N `J:^,H
SortUtil.swap(queue,j,k); V|+ `L-
k = j; 6\%r6_.d
} !."Izz/
} ?f(pQy@V
private void fixUp(int k) { h<+PP]l=
while (k > 1) { tq2-.]Y@U
int j = k >> 1; dl7Riw-J
if (queue[j]>queue[k]) #8P#^v]H
break; SJso'6 g
SortUtil.swap(queue,j,k); 'm
k = j; 4x=V|"
} EI[e+@J
} Y:DNu9
Gw{Gt]liq
} >lUBt5gU
6 ,7/8
} aeN}hG
p~,a=
SortUtil: `V?x
xq\
vo:52tCk}m
package org.rut.util.algorithm; ls8olLM>
0IoXDx
import org.rut.util.algorithm.support.BubbleSort; 2+c>O%L
import org.rut.util.algorithm.support.HeapSort; *+_fP |cv
import org.rut.util.algorithm.support.ImprovedMergeSort; $O;N/N:m
import org.rut.util.algorithm.support.ImprovedQuickSort; !=8L.^5c
import org.rut.util.algorithm.support.InsertSort; /\IAr,w[
import org.rut.util.algorithm.support.MergeSort; L8,H9T#e
import org.rut.util.algorithm.support.QuickSort; S!`4Bl
import org.rut.util.algorithm.support.SelectionSort; xiOv$.@q
import org.rut.util.algorithm.support.ShellSort; gb!@OZ c
l8hvq(,{
/** m'G?0^Ft
* @author treeroot y9l#;<b
* @since 2006-2-2 P#vv+]/
* @version 1.0 rf1wS*uU+
*/ l<0[ K(
public class SortUtil { Thht_3_C,f
public final static int INSERT = 1; lx A<iQia
public final static int BUBBLE = 2; ~pX(w!^
public final static int SELECTION = 3; N\CEocU
public final static int SHELL = 4; Lz#$_Am'H
public final static int QUICK = 5; <3],C)Zwc
public final static int IMPROVED_QUICK = 6; }`+^|1
public final static int MERGE = 7; } K+Q9<~u
public final static int IMPROVED_MERGE = 8; :FKYYH\
public final static int HEAP = 9; dy8In%
.g(\B
public static void sort(int[] data) { Mc#O+'](f
sort(data, IMPROVED_QUICK); n]6}yJJo
} q>(I*=7
private static String[] name={ &kXGWp
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E,ZB;
}; ^2Fs)19R
3[|:sa8?s
private static Sort[] impl=new Sort[]{ :?&WKW
new InsertSort(), }v'PY/d.
new BubbleSort(), ZH`K%h0
new SelectionSort(), ?hry=I(7r
new ShellSort(), AK*mcTr
new QuickSort(), + hyWo]nW0
new ImprovedQuickSort(), dEAAm=K,<
new MergeSort(), 0T{c:m~QXe
new ImprovedMergeSort(), `DWi4y7
new HeapSort() ]U^d 1&k
}; -!bLMLIg
#<WyId(
public static String toString(int algorithm){ {g:/BFLr#
return name[algorithm-1]; |Ad6~E+aL-
} *k@0:a(>
&)"7am(S`
public static void sort(int[] data, int algorithm) {
;f ;*Q>!
impl[algorithm-1].sort(data); bHWvKv+
} kj<D 4)
u_[4n
public static interface Sort { ^*?B)D =,
public void sort(int[] data); hk lO:,`
} 3<UDVt@0
r3BDq
public static void swap(int[] data, int i, int j) { ZimMjZ%4
int temp = data; VATXsD
data = data[j]; &"H<+>`
data[j] = temp; yOn2}Z
} >gOI]*!5
} hiK[!9r