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。 xF:}a:c@H
插入排序: /y8=r"'G
MIV<"A
package org.rut.util.algorithm.support; !V<c:6"
vJybhdvP
import org.rut.util.algorithm.SortUtil; I-?PTr
/** 0\qLuF[)
* @author treeroot Z7\}x"hk
* @since 2006-2-2 fN)A`> iP
* @version 1.0 OV@MT^
*/ DrAp&A|WV|
public class InsertSort implements SortUtil.Sort{ S&yKi
.b.pyVk
/* (non-Javadoc) `^:>sU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /wt!c?wR
*/ vy:-a G
public void sort(int[] data) { GSHJ?}U,
int temp; &@g~o0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 79m',9{u
} ;Jh=7wx
} jXa;ovPK
} Z2Q'9C},m
Alo;kt@x
} w'[^RZW:j
c@eQSy
冒泡排序: j ^Tb=
@u@N&{b5"
package org.rut.util.algorithm.support; 8i
epG
@fI1|v=eF
import org.rut.util.algorithm.SortUtil; T^z
B^7B-RBi0
/** I_?+;<n
* @author treeroot 1/JtL>SKE
* @since 2006-2-2 9i6z p'
* @version 1.0 $-J0ou8~
*/ x9DG87P~+
public class BubbleSort implements SortUtil.Sort{ rI'kGqU
^bD)Tg5K
/* (non-Javadoc) *Z9Rl>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DGc5Lol~
*/ hSl6X3W
public void sort(int[] data) { !^[i"F:G
int temp; AVn?86ri
for(int i=0;i for(int j=data.length-1;j>i;j--){ $Ph
T :
if(data[j] SortUtil.swap(data,j,j-1); teQ<v[W.
} 4Nb&(p
} "YC5viX
}
=,MX%-2
} 8;%F-?
1<9=J`(H
} b0(bL_,
`>HM<Nn-0
选择排序: @IXvp3r
"dkDT7
package org.rut.util.algorithm.support; /JqNiqvh
**,(>4j
import org.rut.util.algorithm.SortUtil; 0Z.X;1=
bjL8Wpk
/** a)o-6
* @author treeroot B;vpG?s{9
* @since 2006-2-2 MvCB|N"qy
* @version 1.0 xYLTz8g=
*/ [=EmDP:@
public class SelectionSort implements SortUtil.Sort { /h]#}y j
qS9z0HLE
/* (93$ L zZ
* (non-Javadoc) >~F_/Z'5
* &.v|yG]&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F
`4a0~?
*/
GJr1[
public void sort(int[] data) { .!`y(N0hc
int temp; p2=+cS"HC
for (int i = 0; i < data.length; i++) { kd=|Iip;(
int lowIndex = i; h,*-V 'X.k
for (int j = data.length - 1; j > i; j--) { kB!
iEoIBA
if (data[j] < data[lowIndex]) { y/.I<5+Bu
lowIndex = j; I)(@'^)
} >h
Rq
}
+|w%}/N
SortUtil.swap(data,i,lowIndex); m=4hi(g
} LBIsj}e
} ^~7/hm:
j^T
i6F>f
} r%uka5@
7l+:gD
Shell排序: +Oafo|%
2(i@\dZCb<
package org.rut.util.algorithm.support; h,fC-+H5
XU*4MU^'
import org.rut.util.algorithm.SortUtil; eZ
G#op
[uLpm*7
/** w(N$$
* @author treeroot 1sIPhOIys
* @since 2006-2-2 8XG|K`'u
* @version 1.0 k .#I ;7
*/ j /)A<j$
public class ShellSort implements SortUtil.Sort{ oc>N| ww:
)*`cJ_t
/* (non-Javadoc) fo"%4rkL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -+HD5Hc
*/ )JXlPU
public void sort(int[] data) { c}G\F$
for(int i=data.length/2;i>2;i/=2){ =M],5<2;
for(int j=0;j insertSort(data,j,i); >(\Z-I&YQ
} lc(}[Z/|V
} Gl6M(<f\5
insertSort(data,0,1); VBN=xg}
} <hBd
#J
dcH@$D@~S
/** ^Z>Nbzr{
* @param data {3qlx1w
* @param j -}CMNh
* @param i K[^BRn
*/ [r0`D^*=
private void insertSort(int[] data, int start, int inc) { ukDaX
int temp; 2{9%E6%#
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2]V&]s8Wi=
} DyCnL@
} >9+h2B
} (hi{i
2DXV~>
} Q35D7wo'}
IIY3/
快速排序: |@Ze{\
z5g4+y,
package org.rut.util.algorithm.support; N
Wf IRL
RQ;}+S
import org.rut.util.algorithm.SortUtil; H$k2S5,,z
8zrLl:{
/** ?BnX<dbi&
* @author treeroot uwc@~=;
* @since 2006-2-2 [;pL15-}4
* @version 1.0 I\~sE Jwj
*/ v
8B4%1NE
public class QuickSort implements SortUtil.Sort{ -+z8bZ
miB+'n"zS
/* (non-Javadoc) fo_*Uva_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h#}'9oA
*/ ') K'Ea
public void sort(int[] data) { \qkb8H
quickSort(data,0,data.length-1); PlRcrT"#w
} :zQNnq:|
private void quickSort(int[] data,int i,int j){ Zo#c[9IaC
int pivotIndex=(i+j)/2; |.?Xov]
file://swap Y<;KKD5P'j
SortUtil.swap(data,pivotIndex,j); K)#6&\0tT
%cl{J_}{&
int k=partition(data,i-1,j,data[j]); 6){nu rDBG
SortUtil.swap(data,k,j); ,FK.8c 6g
if((k-i)>1) quickSort(data,i,k-1); :NynNu'
if((j-k)>1) quickSort(data,k+1,j); +QA|]Y~!
Hn}m}A
} @y/!`Ziw
/** ^IqD^(Kb
* @param data {.r
#j|
* @param i giHqc7-PaX
* @param j ?>DwNz^.!
* @return <N8z<o4rku
*/ F13vc~$Ky
private int partition(int[] data, int l, int r,int pivot) { ?D+H2[n\a
do{ w^^8*b<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); srryVqgS
SortUtil.swap(data,l,r); :U,-v
} UG=],\E2
while(l SortUtil.swap(data,l,r); Xu7lV
return l; U"535<mR
} m1DrT>oN'
i?D)XXB85
} ~Z}DN*S
V?- ]ZkI
改进后的快速排序: num2HtU&%
7`SrqI&
package org.rut.util.algorithm.support; c!a1@G
_Jn@+NoO
import org.rut.util.algorithm.SortUtil; Rnw v/)
XBm ^7'
/** C1x(4&h
* @author treeroot kZ'wXtBYe
* @since 2006-2-2 S\sy] 1*?$
* @version 1.0 $msf~M*
*/ br')%f}m
public class ImprovedQuickSort implements SortUtil.Sort { -Yg?@yt
=kb/4eRg
private static int MAX_STACK_SIZE=4096; ]<k+a-Tt
private static int THRESHOLD=10; h*V~.H
/* (non-Javadoc) 9>/:c\q+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'H(khS
*/ :8U@KABH@h
public void sort(int[] data) { 5P[urOvV
int[] stack=new int[MAX_STACK_SIZE]; dMK\ y4#i
1IN^,A]r2h
int top=-1; xiO10:L4
int pivot; N~%~Q
int pivotIndex,l,r; ^L-; S
~iJ@x;`
stack[++top]=0; #:=*n(GT
stack[++top]=data.length-1; ok{
F=z
#]J"j]L
while(top>0){ s1J(-O
int j=stack[top--]; GHFYIor
int i=stack[top--]; I\f\k>;
y'_2|5!Qs
pivotIndex=(i+j)/2; {2LG$x-N%
pivot=data[pivotIndex]; [bjP-pX
r85j/YK
SortUtil.swap(data,pivotIndex,j); .xe+cK
%UB+N8x`a
file://partition 3K%_wCZ
l=i-1; 7)*QX,4C
r=j; KMXd
do{ mW1T4rR'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hlz$@[$
SortUtil.swap(data,l,r); \J6&Z13Q
} OE2r2ad
while(l SortUtil.swap(data,l,r); pE6r7
SortUtil.swap(data,l,j); @;Xa&*
?I7%ueFY
if((l-i)>THRESHOLD){ B<jVo%og
stack[++top]=i; R) J/z
stack[++top]=l-1; }LryRcrD-n
} 2U) 0k*
if((j-l)>THRESHOLD){ U98e=57N
stack[++top]=l+1; [s F/sa3
stack[++top]=j; Hd{@e6S
}
*z__$!LR
iZ 9ed]mf
} ]JlM/
file://new InsertSort().sort(data); ldr~=<hsZ
insertSort(data); hs<OzM
} 0F<$Zbe2B
/** LzD,]{CC5
* @param data Bh7dAV(
*/ uHPd!#]
private void insertSort(int[] data) { u2cDSRrqT
int temp; Ub`vf4EB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $ZRvvm!f
} V L;<+C~
} %18%T{|$e
} Z<`:xFy(
v_,'NA0
} ._6e#=
7%5EBH &
归并排序: 9lB$i2G>Zw
;]_h")4"c
package org.rut.util.algorithm.support; U4h5K}j4
'6GW.;
import org.rut.util.algorithm.SortUtil; c:2LG_mQ
;+rcT;_^/
/** {`V ^V_
* @author treeroot |D1TSv}rZD
* @since 2006-2-2 t>eeOWk3
* @version 1.0 Tb!jIe
*/ 7Jn%c<s
public class MergeSort implements SortUtil.Sort{ yE|hA2G?0
"f>`ZFp^
/* (non-Javadoc) ,=dc-%J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y,{pG]B$w
*/ [p_<`gU?
public void sort(int[] data) { 2 @t?@,c
int[] temp=new int[data.length]; $J*lD-h-
mergeSort(data,temp,0,data.length-1); @gk{wh>c
} [n&SA]a
:i*
=s}cv
private void mergeSort(int[] data,int[] temp,int l,int r){ ; - 8]
int mid=(l+r)/2; $tDM
U3,W
if(l==r) return ;
|A#\5u
mergeSort(data,temp,l,mid); Ym
1; /'
mergeSort(data,temp,mid+1,r); V:2{LR<R8
for(int i=l;i<=r;i++){ 3y yVI#
temp=data; &S8,-~U
} ["15~9
int i1=l; a6 w'.]m
int i2=mid+1; 9z7rv,
for(int cur=l;cur<=r;cur++){ HrHtA]
if(i1==mid+1) b&*N
data[cur]=temp[i2++]; JwdvY]
else if(i2>r) &)!4rABn
data[cur]=temp[i1++]; _J>!K'Dz
else if(temp[i1] data[cur]=temp[i1++]; .Xk#Cwm'
else ^a=V.
data[cur]=temp[i2++]; !G;|~|fMV
} ]4]AcJj
} =L*-2cE6#
C%AN4Mo
} &+ UnPE(
.yQ<
改进后的归并排序: EKNmXt1
lE
N[;R8SP
package org.rut.util.algorithm.support; !YX_k<1E
9}'92
import org.rut.util.algorithm.SortUtil; S.!K
jz,Gj}3;
/** zh9B8r)C
* @author treeroot ~{l @
* @since 2006-2-2 [I78<IJc
* @version 1.0 r)oR`\7
*/ R6\|:mI,$
public class ImprovedMergeSort implements SortUtil.Sort { rAA?{(!9x
k<y~n*{_
private static final int THRESHOLD = 10; p:3
V-$4X
4VHX4A}CgA
/* ;nKhmcQ4
* (non-Javadoc) eHUb4,%P
* 0Z
jE(3i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H6<3'P
*/ u^( s0q
public void sort(int[] data) { Fz2CXC
int[] temp=new int[data.length]; r:H.VAD
mergeSort(data,temp,0,data.length-1); (1)b> 6
} yHn8t]{
tkW7wP;
private void mergeSort(int[] data, int[] temp, int l, int r) { i&0Zli
int i, j, k; O&r9+r1`
int mid = (l + r) / 2; ,D\}DJ`)C
if (l == r) 7$Lt5rn"}
return; #2;8/"v
if ((mid - l) >= THRESHOLD) &90pKs
mergeSort(data, temp, l, mid); E=t^I/f)E
else gQuU_dbXSB
insertSort(data, l, mid - l + 1); 3V3 q
vd
if ((r - mid) > THRESHOLD) Dp^6|T* HU
mergeSort(data, temp, mid + 1, r); lKV7IoJ&;
else fhmBKeFdV
insertSort(data, mid + 1, r - mid); '}E"Mdb
s"x(i
for (i = l; i <= mid; i++) { T2 /u7<D-
temp = data; /@0
} <"nF`'olV
for (j = 1; j <= r - mid; j++) { (>`S{L
C>s
temp[r - j + 1] = data[j + mid]; ]s`cn}d
} LXm@h
int a = temp[l]; /l;_ xs
int b = temp[r]; )u]1j@Id
for (i = l, j = r, k = l; k <= r; k++) { #=#bv`
if (a < b) { 60r0O5=|Fl
data[k] = temp[i++]; `Db%:l^e
a = temp; G4wJv^6i9
} else { Wx8n)
data[k] = temp[j--]; ]Ryg}DOQ
b = temp[j]; n1rJ^q-G
} U[6
~ad
a
} G4G<Ow)`
} "MgTfUIiyD
!qTP
/** "O8iO!:
* @param data 9XX:_9|I
* @param l '3TfW61]
* @param i 51`*VR]`K
*/ _vUId?9@+e
private void insertSort(int[] data, int start, int len) { #-kx$(''V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @[~j|YH}
} >[4CQK`U
} nk2H^RM^
} q5~"8]Dls
} @Op7OFY%
QPKY9.Rvv
堆排序: *OHaqe(*
u>[hLXuB
package org.rut.util.algorithm.support; Q'0:k{G
oPrK{flm
import org.rut.util.algorithm.SortUtil; LT]YYn($
IQ5'4zQg=
/** r_pZK(G%
* @author treeroot )V9wU1.
* @since 2006-2-2 nS]Ih 0(K
* @version 1.0 o^+g2;Ro
*/ +7j7zpw
public class HeapSort implements SortUtil.Sort{ OK%d1M^8j
vGD D
/* (non-Javadoc) e]D TK*W~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~2O1$o u
*/ m*` W&k[
public void sort(int[] data) { 3($tD*!o
MaxHeap h=new MaxHeap(); sDjbvC0
h.init(data); n(j5dN>]
for(int i=0;i h.remove(); \6vr)1~N>
System.arraycopy(h.queue,1,data,0,data.length); -8z@FLUK-
} (~]0)J
`9Q O'^)
private static class MaxHeap{ ~Q+J1S]Fs
@%I-15Jz
void init(int[] data){ j0A9;AP;;C
this.queue=new int[data.length+1]; CMU\DO
for(int i=0;i queue[++size]=data; j "e]Ui
fixUp(size); JF(&+\i<p
} #=czqZw
} -"d&Ow7o
-x+K#T0Z
private int size=0; d ZxrIWx
MR.c?P?0Q
private int[] queue; f#
sDG
Ummoph7_@
public int get() { }W
nvz;]B
return queue[1]; :F?L,I,K
} @}hdMVi
I?KGb:]|
public void remove() { Q,nXc
SortUtil.swap(queue,1,size--); +]0/:\(B
fixDown(1); 8WLBq-]G
} 3W55m@w
file://fixdown a+P^?N
private void fixDown(int k) { 'h `)6{
int j; H+ 7Fw'u
while ((j = k << 1) <= size) { YeVkX{y
if (j < size %26amp;%26amp; queue[j] j++; gS.,V!#t
if (queue[k]>queue[j]) file://不用交换 ? ;$f"Wl
break; 73kI%nNB
SortUtil.swap(queue,j,k); 5]Y?NN,GR
k = j; ;
e)vk|
} hGj`IAW
} \
6 :7
private void fixUp(int k) { JO&+W^$uY}
while (k > 1) { ;f9a0V s
int j = k >> 1; )\QPUdOvx
if (queue[j]>queue[k]) 5k`Df/
break; tWITr
SortUtil.swap(queue,j,k); 5.F/>?<
k = j; #NQx(C
} -~&T0dt~
} KdLj1T
UI74RP
} U9x6\Iy
;#ElJXS
} "]x#kM
. 12H/F
SortUtil: vec4R )S
$DhW=(YM_a
package org.rut.util.algorithm; {@
Z%6%'9
*&$2us0%%
import org.rut.util.algorithm.support.BubbleSort; 6U%F
mE @
import org.rut.util.algorithm.support.HeapSort; Sj@VOW
import org.rut.util.algorithm.support.ImprovedMergeSort; SVqKG+{My
import org.rut.util.algorithm.support.ImprovedQuickSort; eOs 4c`
import org.rut.util.algorithm.support.InsertSort; $Sc;
import org.rut.util.algorithm.support.MergeSort;
u'qc=5
import org.rut.util.algorithm.support.QuickSort; jl,>0MA
import org.rut.util.algorithm.support.SelectionSort; mLH,6rO9
import org.rut.util.algorithm.support.ShellSort; x1`zD*{
=|_k a8{?
/** M6"a
w6
* @author treeroot {{ +8oRzY
* @since 2006-2-2 #EIcP=1m4
* @version 1.0 fU^5Dl
*/ zI.:1(,
public class SortUtil { =iE)vY,?"}
public final static int INSERT = 1; Gw?ueui<
public final static int BUBBLE = 2; -[xbGSj{
public final static int SELECTION = 3; t^8|t(Lq
public final static int SHELL = 4; "hLmwz|a
public final static int QUICK = 5; ~otV'= /my
public final static int IMPROVED_QUICK = 6; `2@f=$B
public final static int MERGE = 7; c[;=7-+
public final static int IMPROVED_MERGE = 8; o~ReeZ7)Zg
public final static int HEAP = 9; mjJ/rx{kbw
xOdLct
public static void sort(int[] data) { -\V;Gw8mD
sort(data, IMPROVED_QUICK); Zxn>]Z_
} 7nk3^$|
private static String[] name={ j:xm>X'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uF<\|y rFt
}; YL9Tsw
XrN]}S$N
private static Sort[] impl=new Sort[]{ vfOG(EkG.?
new InsertSort(), T,5(JP(h3
new BubbleSort(), NU.YL1
new SelectionSort(), o;'-^ LJ
new ShellSort(), z i3gE$7
new QuickSort(), Jp +h''t
new ImprovedQuickSort(), Ql?>,FZ
new MergeSort(), 9 N9Q#o$!.
new ImprovedMergeSort(), F{F SmUxzK
new HeapSort() JwcC9
O
}; RgLk AHA
JeU1r-i
public static String toString(int algorithm){ b%|6y
return name[algorithm-1]; Pt?d+aBtV
} [G7S
XA-,
public static void sort(int[] data, int algorithm) { "In$|A\?E
impl[algorithm-1].sort(data); <gx"p#JbZ
} g/`z.?
K#a_7/!v/
public static interface Sort { !-s 6B
public void sort(int[] data); uEDvdd#V.
} >(eR0.x
[_zoJ
public static void swap(int[] data, int i, int j) { o`7B@]
int temp = data; `&g1`vg
data = data[j]; Cp^%;(@
data[j] = temp; iK9#{1BpML
} og8"#%
} +3o
4KB}