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。 zJWh
插入排序: {z?e<
gIS<"smOo
package org.rut.util.algorithm.support; /?l@7
d$<HMs:o@
import org.rut.util.algorithm.SortUtil; ,.u7([SGm
/** F9q<MTh
* @author treeroot ' } rUbJo
* @since 2006-2-2 ^9eJ)12pK
* @version 1.0 sfez0Uqe.~
*/ )*N]Q
public class InsertSort implements SortUtil.Sort{ /jih;J|
B 8z3W9
/* (non-Javadoc) Wa~'p+<c~b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?nXpYr
*/ 1R)4[oYN\<
public void sort(int[] data) { HK>!%t0S
int temp; UJ1Ui'a(!!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^w4FqdGM
} v\ggFrG]
} [E_6n$w
} me@4lHBR
[ajF
} W[A;VOj0$
+\G/j ]3f
冒泡排序: $trvNbco
|4BS\fx~N
package org.rut.util.algorithm.support; $x]'6
-Cv:lJj
import org.rut.util.algorithm.SortUtil; 3dNOXk,#
9mkt.>$
/** ',nGH|K.
* @author treeroot zC6,m6Dv
* @since 2006-2-2 jdV E/5
* @version 1.0 tG(?PmQ
*/ o~H4<ayy
public class BubbleSort implements SortUtil.Sort{ yWsV !Ub
6rMGlzuRo
/* (non-Javadoc) "ZF:}y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NK]X ="`
*/ /\_`Pkd3m
public void sort(int[] data) { # 4_'%~-e
int temp; =7ul,
for(int i=0;i for(int j=data.length-1;j>i;j--){ l)GV&V
if(data[j] SortUtil.swap(data,j,j-1); a) GLz
} P31}O2 Nh
} .]g>.
} ~{'.9
} si,fs%D&
;1^_.3
} qT^R>p
UN[rW0*
选择排序: 2 /O/h
|=2E?&%?
package org.rut.util.algorithm.support; Ss+e*e5Ht
`|e?91@vEa
import org.rut.util.algorithm.SortUtil; ~|kre:j9
Au,xIe!t
/** % \Nfj)9
* @author treeroot vBAds
* @since 2006-2-2 E#X1P #$pW
* @version 1.0 `=^;q6f
*/ /PF X1hSu
public class SelectionSort implements SortUtil.Sort { -Wc'k 2oU
JaP2Q} &B
/* Tq[=&J
* (non-Javadoc) E$] 7w4,n
* K0_/;a] |
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )B.NV<m
*/ VqV6)6
public void sort(int[] data) { l/0TNOA
int temp; FglCqO}
for (int i = 0; i < data.length; i++) { B]~#+rMK
int lowIndex = i; V~M>K-AL
for (int j = data.length - 1; j > i; j--) { lx,^Y647
if (data[j] < data[lowIndex]) { 6[>UF!.=
lowIndex = j; fl>*>)6pm
} JTB_-J-TU
} 3OTq
SortUtil.swap(data,i,lowIndex); WL(u'%5
} #?L%M
} u6h"=l{
N)G.^9
} 1c_qNI;:p
JVE]Qb_
Shell排序: S*~v9+
"MZj}}l
package org.rut.util.algorithm.support; SFAh(+t
tgEXX- {
import org.rut.util.algorithm.SortUtil; 95jJ"4 a+
BtDi$d%'
/** }
_Yk.@J5
* @author treeroot .6S]\dp7~
* @since 2006-2-2 EdxTaR
* @version 1.0 P[-2^1P"
*/ Q| >
\{M
public class ShellSort implements SortUtil.Sort{ l<0BMw S8
)>08{7
/* (non-Javadoc) E8#r<=(m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x"0*U9f
*/ %toxZ}OP
public void sort(int[] data) { s8iJl+Jm
for(int i=data.length/2;i>2;i/=2){ tAH,3Sz( /
for(int j=0;j insertSort(data,j,i); ~$} `R=
} :9!?${4R
} OLpE0gZ.|`
insertSort(data,0,1); R4=n">>Q
} 4{H>V_9zs
|Q2H^dU'rQ
/** sxcpWSGA^
* @param data bAv>?Xqa
* @param j 1!<k-vt
* @param i SAswP
*/ <*u[<
private void insertSort(int[] data, int start, int inc) { ,W"Q)cL
int temp; #7K&x.w$
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); . _JM3o}F
} ZVu&q{s,
} ]l.y/pRP5[
} lAuI?/E
l(|@ dp
} l?E7'OEF:
_
Js& _d
快速排序: Yy]^_,r
AK%2#}k.
package org.rut.util.algorithm.support; T1yJp$yD"
to@ O
import org.rut.util.algorithm.SortUtil; z;`o>Ja2
qD:3;85
/** S;[g0j
* @author treeroot M; *f(JY$
* @since 2006-2-2 7+';&2M)n~
* @version 1.0 7N0V`&}T
*/ )+T\LU
public class QuickSort implements SortUtil.Sort{ aV3:wp]Gn
f%ude@E3
/* (non-Javadoc) mD`v>L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y)N57#e
*/ d;UP|c>2
public void sort(int[] data) { td{M%D,R"
quickSort(data,0,data.length-1); {p&M(W]
} D>wq4u
private void quickSort(int[] data,int i,int j){ Yg@k+
int pivotIndex=(i+j)/2; G/ToiUY
file://swap j8kax/*[
SortUtil.swap(data,pivotIndex,j); f,{O%*PUA
A}K RXkB
int k=partition(data,i-1,j,data[j]); v:0.
SortUtil.swap(data,k,j); Zhb)n
if((k-i)>1) quickSort(data,i,k-1); 0 =#)-n
if((j-k)>1) quickSort(data,k+1,j); z^s/7Va[
FTvFtdY
} sCG[gshq
/** ]#>;C: L
* @param data _(=[d
* @param i [>l2E
* @param j >R"]{y
* @return F&?&8.
*/ 9AQMB1D*v4
private int partition(int[] data, int l, int r,int pivot) { ,{=pFs2
do{ 4E[ 9)n+YV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tHgn-Dhzr
SortUtil.swap(data,l,r); $|~YXH~O
} \[</|]'[
while(l SortUtil.swap(data,l,r); S !Dq8
return l; /.!ytHw8
} 6^
UQ{P1;
~"-+BG(5
} U1zcJl^
UzZzt$Kw
改进后的快速排序: I75>$"$<
Hrb67a%b
package org.rut.util.algorithm.support; )+
}\NCFh
*7MTq_K(An
import org.rut.util.algorithm.SortUtil; daamP$h9
xD[O8vQE
/** sp%EA=: E
* @author treeroot w@ 1g_dy
* @since 2006-2-2 9I3vW]0x[
* @version 1.0 ""-#b^DQ
*/ #NU;$&
public class ImprovedQuickSort implements SortUtil.Sort { |8,|>EyqK
'n1-?T)
private static int MAX_STACK_SIZE=4096; s^:8bFn9$
private static int THRESHOLD=10; #
`}(x;ge
/* (non-Javadoc) p9c`rl_N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1CS[%)-c
*/ M[aF3bbN
public void sort(int[] data) { M6yzqAh
int[] stack=new int[MAX_STACK_SIZE]; 3Yu1ZuIR
Gwl]sMJ
int top=-1; 4x8e~/
int pivot; R+}x#
int pivotIndex,l,r; =*K~U# uoC
#Av6BGM|,
stack[++top]=0; WO=X*One
stack[++top]=data.length-1; Snm
m(.
!nX}\lw
while(top>0){ *dB^B5
int j=stack[top--]; Mlr]-Gu5Z
int i=stack[top--]; y_aKW4L+
g.3 .
C?
pivotIndex=(i+j)/2; 'FVh/};Y.D
pivot=data[pivotIndex]; ,:RHhg
v.eN Wp
SortUtil.swap(data,pivotIndex,j); RPH]@
\SA"DT
file://partition -Fi{[%&u
l=i-1; JPeZZ13sS
r=j; Jxyeh1zqB
do{ M6$9-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [=Qv?am
SortUtil.swap(data,l,r); DyZe+,g;S
} zGm#erE
while(l SortUtil.swap(data,l,r); P<Wtv;Z1Z
SortUtil.swap(data,l,j); sY @S
3$cIm+
if((l-i)>THRESHOLD){ eh`s fH
stack[++top]=i; x 6=Yt{
stack[++top]=l-1; 'g3!SdaLF
} jt({@;sU[<
if((j-l)>THRESHOLD){ xR9<I:^&
stack[++top]=l+1; \>8r)xC
stack[++top]=j; +59tX2@Q
} ["5Z=4
#2N']VP
} iw`,\V&
file://new InsertSort().sort(data); -!X,MDO
insertSort(data); ;.%Ii
w&WG
} C~C}b
/** `5VEGSP]
* @param data mkJC*45
*/ 6\8
lx|w
private void insertSort(int[] data) { v37TDY3;
int temp; xwSi}.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aT v
} f:/[
} n|G x29E
} -ahSFBZlg
u}zCcWP|L
} O26'|w@$
Z/y&;N4
归并排序: -pWnO9q
}N^A
(`L
package org.rut.util.algorithm.support; *$
PEKU
import org.rut.util.algorithm.SortUtil; s7x&x;-
J>H$4t#HX
/** XkG:1H;Q%
* @author treeroot 4Dd@&N
* @since 2006-2-2 Dd1\$RBo
* @version 1.0 <!+T#)Qi
*/ Ro&s\T+d
public class MergeSort implements SortUtil.Sort{ 8T:?C~"
1qEpQ.:](
/* (non-Javadoc) RW4}n<
88
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; O6Ez-"
*/
>mk}
public void sort(int[] data) { (\CT
"u-
int[] temp=new int[data.length]; P;A9t #\
mergeSort(data,temp,0,data.length-1); 3Kv~lo^
} =5a|'O
!=C74$TH
private void mergeSort(int[] data,int[] temp,int l,int r){ #:^aE|s
int mid=(l+r)/2; j|Q*L<J
if(l==r) return ; v)^8e0vx
mergeSort(data,temp,l,mid); 8uj;RG
mergeSort(data,temp,mid+1,r); tWBfIHiha
for(int i=l;i<=r;i++){ a&'!g)d
temp=data; MF7q*f
} k9V#=,K0
int i1=l; j_3X
1w)k
int i2=mid+1; A/WmVv6
for(int cur=l;cur<=r;cur++){ :A~6Gk92A
if(i1==mid+1) S<
TUZ
/;
data[cur]=temp[i2++]; 4pYscB
else if(i2>r) 7GY3_`
data[cur]=temp[i1++]; anM]khs?
else if(temp[i1] data[cur]=temp[i1++]; N ,8^AUJ3&
else !x%$xC^Iz
data[cur]=temp[i2++]; -&AgjzN!
} i!|OFU6
} 2{- };
xI'sprNa_1
} ~>j5z&:&
(
04clU^F
改进后的归并排序: W%6Y?pf)z
|8DMj s()*
package org.rut.util.algorithm.support; 2YS1%<-g*
VL[}
import org.rut.util.algorithm.SortUtil; bu}N{cW
*$+:Cbe-F
/** ^]{)gk8P~2
* @author treeroot Vo G`@^s
* @since 2006-2-2 HVG:q#=C
* @version 1.0
`oPUf!
*/ EG7.FjnVu
public class ImprovedMergeSort implements SortUtil.Sort { y3^>a5z!x
"DpgX8lG_
private static final int THRESHOLD = 10;
KF.d:
`dGcjLsIz
/* q'% cVM
* (non-Javadoc) a7Xa3 vlpO
* t XbMP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *(w#*,lv
*/ %UO ;!&K
public void sort(int[] data) { hFLLg|@
int[] temp=new int[data.length]; s)eU^4m
mergeSort(data,temp,0,data.length-1); V\2&?#GZ
} ]:K[{3iM
mO?yrM *
private void mergeSort(int[] data, int[] temp, int l, int r) { oh@|*RU
int i, j, k; uhf%
zG
int mid = (l + r) / 2; &_Vd
if (l == r) 5GHW~q!Zo\
return; 9 M<3m
if ((mid - l) >= THRESHOLD) 2Nau]y]=
mergeSort(data, temp, l, mid); A4|L;z/A[h
else MODi:jsl
insertSort(data, l, mid - l + 1); *~b}]M700
if ((r - mid) > THRESHOLD) UpoTXAD}k
mergeSort(data, temp, mid + 1, r); FL8?<bU
else Wh7}G
insertSort(data, mid + 1, r - mid); :krdG%r
$I$ B8
for (i = l; i <= mid; i++) { 3<:m;F*#
temp = data; >'MT]@vez
} \-2O&v'}
for (j = 1; j <= r - mid; j++) { $!m (S&f
temp[r - j + 1] = data[j + mid]; uJg|
} Mu>WS)1lS
int a = temp[l]; 4Ww.CkRG
int b = temp[r]; zF-M9f$_PY
for (i = l, j = r, k = l; k <= r; k++) { B}|(/a@*
if (a < b) { ~A-1x!YiU
data[k] = temp[i++]; K[G=J
a = temp; >AUj4d
} else { ~4t7Q
data[k] = temp[j--]; )V6<'>1WZ
b = temp[j]; V+y yy-/
} S @WzvM
} F%s'R 0l
} ]
1:pnd
YYzl"<)c
/** {r.yoI4e
* @param data }o{6
* @param l +. ` I
* @param i @4EC z>Q
*/ fg8"fbG`:
private void insertSort(int[] data, int start, int len) { `~S; UG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); no`> r}C
} DFUW^0N
} due'c!wW
} ,FP<#
0F*a
} FJYc*l
`dpm{sn
堆排序: ? 016
nxZ[E.-\
package org.rut.util.algorithm.support; r:QLO~l/
P!*G"^0<
import org.rut.util.algorithm.SortUtil; q=+AN</
CPj8`kl
/** j1Q"s(
* @author treeroot g/v"E+
* @since 2006-2-2 c&rS7%
* @version 1.0 JXa5snh{h
*/ 6_#:LFke
public class HeapSort implements SortUtil.Sort{ F]4JemSjK
sBuOKT/j
/* (non-Javadoc) dRXEF6G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F4xXJ"vc
*/ k9|8@3(h
public void sort(int[] data) { UW?(-_8
MaxHeap h=new MaxHeap(); wm<`0}
h.init(data); vXP+*5d/ K
for(int i=0;i h.remove(); ]@rt/ eX
System.arraycopy(h.queue,1,data,0,data.length); F=qG+T
} r`8>@2sW1
Z<2j#rd
private static class MaxHeap{ ^jiYcg@_[
Q Jnji
void init(int[] data){ l)^sE)
this.queue=new int[data.length+1]; >Y\$9W=t
for(int i=0;i queue[++size]=data; f#mcWL1}
fixUp(size); 4*vV9*'!
} z|5Sy.H>
} TcP
(?v
X4bB
private int size=0; N;A#K7A[@
JO^E x1c
private int[] queue; *t-Wol
E Pgn2[z
public int get() { wj$J}F
return queue[1]; 6*({ZE
} 0';U3:=i,
0<{zW%w
public void remove() { 2Y` C\u
SortUtil.swap(queue,1,size--); ~}g"Fe
fixDown(1); >>nt3q
} MBO3y&\S4
file://fixdown x^ J}]5{0
private void fixDown(int k) { LG/6_t}
int j; b;;C><
while ((j = k << 1) <= size) { Uo7V)I;o
if (j < size %26amp;%26amp; queue[j] j++; =(-oQ<@v
if (queue[k]>queue[j]) file://不用交换 ,vnHEY&
break; 3ZF- n`
SortUtil.swap(queue,j,k); EC]b]'._
k = j; _eE hIQ9
} )l|/lj
} '^!1A GF
private void fixUp(int k) { xD#r5
while (k > 1) { 6]/LrM, 23
int j = k >> 1; S5W*,?
if (queue[j]>queue[k]) F_?aoP&5
break; S\F;b{S1
SortUtil.swap(queue,j,k); .+'`A"$8
k = j; UZ`G S$D@
} $GR 3tLzK:
} wTL&m+xr
yd-r7iq
} !5/jDvh
O=9mLI6
} 7LQLeQvB
3miEF0x[
SortUtil: }qa8o
?0U.1N
package org.rut.util.algorithm; |@rPd=G^(/
exnFy-
import org.rut.util.algorithm.support.BubbleSort; Td7=La0
import org.rut.util.algorithm.support.HeapSort; mX2(SFpJar
import org.rut.util.algorithm.support.ImprovedMergeSort; ";&5@H|
import org.rut.util.algorithm.support.ImprovedQuickSort; jmDQKqEc|l
import org.rut.util.algorithm.support.InsertSort; ~BSIp
.
import org.rut.util.algorithm.support.MergeSort;
Y\Z.E;
import org.rut.util.algorithm.support.QuickSort; )o:%Zrk
import org.rut.util.algorithm.support.SelectionSort; ^RS?y8
import org.rut.util.algorithm.support.ShellSort; }i"\?M
O e-FI+7
/** Vm_waa
* @author treeroot (4hCT*
* @since 2006-2-2 *kliI]BF]
* @version 1.0 (zVT{!z
*/ .+;;-]})
public class SortUtil { &L88e\
c+
public final static int INSERT = 1; y)s+ /Teb
public final static int BUBBLE = 2; DRo?7_
public final static int SELECTION = 3; u@;6r"8q
public final static int SHELL = 4; lji&]^1
public final static int QUICK = 5; gJkk0wokC
public final static int IMPROVED_QUICK = 6; }67lL~L
public final static int MERGE = 7; B.e3IM0
public final static int IMPROVED_MERGE = 8; -2{NIF^H
public final static int HEAP = 9; Qh4<HQ<9
~HW}Wik
public static void sort(int[] data) { $50/wb6s
sort(data, IMPROVED_QUICK); N^ )\+*tf1
} 69z,_p$@:
private static String[] name={ 0/1Ay{ns
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |;G9K`8
}; X9J&OQ[W
dB{VY+!
private static Sort[] impl=new Sort[]{ tAI<[M@
new InsertSort(), Z{9
mZlIy
new BubbleSort(), V Z#@7t
new SelectionSort(), pj~Ao+
new ShellSort(), _'W en
new QuickSort(), F8c^M</
new ImprovedQuickSort(), 7Fg-}lJAC
new MergeSort(), :`pgdn
new ImprovedMergeSort(), ]M:=\h,t>
new HeapSort() BIBBp=+
}; 8?YWE62
)IFzal}o
public static String toString(int algorithm){ dx/NY1
return name[algorithm-1]; jjT|@\-u
} 4
Qo(Wl
l8$7N=Y
public static void sort(int[] data, int algorithm) { Vy-kogVt
impl[algorithm-1].sort(data); ySS
kw7
} o
0-3[W'x<
>+9f{FP
9
public static interface Sort { i^i^g5l!
public void sort(int[] data); ;Q1/53Y<
} Po
,zTz
m(CbMu
public static void swap(int[] data, int i, int j) { [K*>W[n
int temp = data; shn{]Y
data = data[j]; Y$@?Y/rhR
data[j] = temp; xE[CNJ%t^,
} Po~u-5
} p+t79F.js