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。 S}Q/CT?au
插入排序: M[^
oWu2}#~z_
package org.rut.util.algorithm.support; +$-@8,F>
.m&JRzzV
import org.rut.util.algorithm.SortUtil; 2|KgRk|!
/** *,:>EcDr
* @author treeroot "+g9}g
* @since 2006-2-2 h2SVDKj
* @version 1.0 `*J;4Ju@
*/ qW1d;pt
public class InsertSort implements SortUtil.Sort{ 4'ym vR
`fnU p-
/* (non-Javadoc) K nl`[Nl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8t1XZ
*/ HT`k-}ho,
public void sort(int[] data) { ,4Q1[K35B
int temp; D*%? 0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,Y:ET1:
} Q #Tg)5.\
} W)_|jpd[
} ]C;X/8'Jf5
x|b52<dLL&
} ag_*Z\
uPT2ga ]
冒泡排序: J~]Y
@A5'vf|2;.
package org.rut.util.algorithm.support; =bBV
A0y
^xyU*A}D
import org.rut.util.algorithm.SortUtil; wD\viuq0
&<=?O
a
/** 9-W3}4'e
* @author treeroot CN{xh=2qY[
* @since 2006-2-2 %eE0a4^".
* @version 1.0 5%_aN_1?ef
*/ 6e;POW
public class BubbleSort implements SortUtil.Sort{ `f[
'OACbYgG
/* (non-Javadoc) y+aKk6(_W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w;{=
*/ f:K>o.
public void sort(int[] data) { $} @gR]
Z
int temp; j|KjQ'9
for(int i=0;i for(int j=data.length-1;j>i;j--){ 68?>#o865
if(data[j] SortUtil.swap(data,j,j-1); ELN1F0TneH
} Q}: $F{
} 2dyS_2u
} +n%d,Pz
} /V{1Zw=
J2Mq1*Vp q
} O**~ Tj
uq2C|=M-x\
选择排序: oj(st{,
:I{9k~
package org.rut.util.algorithm.support; (e_z*o)\T
B1V+CP3t
import org.rut.util.algorithm.SortUtil; 6U0BP
LVNA`|>
/** xHD$0eq
* @author treeroot 8og8;#mnyr
* @since 2006-2-2 vdcPpj^d5
* @version 1.0 TVM19)9
*/ %Z3B9
public class SelectionSort implements SortUtil.Sort { M2$Hb_S{
? *v*fs0
/* DbSR(:
* (non-Javadoc) S"t\LB*'Ls
* R/xT.EQ(N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c{IL"B6>
*/ @6
a'p
public void sort(int[] data) { t#VX#dJ
int temp; e*yl _iW
for (int i = 0; i < data.length; i++) { 5\EnD,y
int lowIndex = i; ~"\WV4}`v
for (int j = data.length - 1; j > i; j--) { lWn}afI
if (data[j] < data[lowIndex]) { H_JE)a:+
lowIndex = j; !rF1Remw
} &ty-aB=F
} )MF 4b][
SortUtil.swap(data,i,lowIndex); WH"'Ju5}
} 44s 9\
} 01&@8z'E
yEos$/*u-N
} k 1a?yH)=
ts%
n tnvI
Shell排序: dW22v!
.^2.h
package org.rut.util.algorithm.support; )4h|7^6ji
^s#+`Y05/
import org.rut.util.algorithm.SortUtil; U[2;Fkapi
gj
iFpW4
/** %#o@ c
* @author treeroot ]imVIu
* @since 2006-2-2 vcCNxIzEG
* @version 1.0 3d]~e
*/ =''WA:,=h
public class ShellSort implements SortUtil.Sort{ Wx8:GBM$2
P*B@it
/* (non-Javadoc) lXF7)H&T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c|(J%@B)
*/ }30Sb&"
public void sort(int[] data) { <.Pt%Kg^BS
for(int i=data.length/2;i>2;i/=2){ }& W=
for(int j=0;j insertSort(data,j,i); Sa%%3_&
} z]SEPYq:
} ~-[!>1!%
insertSort(data,0,1); nW*cqM%+
} nW^h
+
/qJC p![X
/** A'rd1"K
* @param data =|``d-
* @param j |5%T)
* @param i ke!
*/ `"}).{N]C
private void insertSort(int[] data, int start, int inc) { !h4A7KBYG
int temp; W!R0:-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |O6/p7+.
} |OAM;@jH
} 9r+'DX?>
} & !ds#-
DQ3L=
} ]{#=WTp]
VBix8|
快速排序: j{r@>g;3
NA/`LaJ
package org.rut.util.algorithm.support; 9Bw#VQ
TE$6=;
import org.rut.util.algorithm.SortUtil; Z1I.f"XY
J _dgP[
/** L%(NXSfu7
* @author treeroot $[Z~BfSQ
* @since 2006-2-2 j`"!G*Vh
* @version 1.0 bEj}J_#
*/ EpNN!s=Q
public class QuickSort implements SortUtil.Sort{ :H3/+/x
~
z3J4s
/* (non-Javadoc) \QC{38}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8U(o@1PT
*/ ` 6*]c n#(
public void sort(int[] data) { B~ i
quickSort(data,0,data.length-1); _J!&R:]$
} tB"9%4](
private void quickSort(int[] data,int i,int j){ gN/>y1{a
int pivotIndex=(i+j)/2; Cs[d:T
file://swap qe#5;#
SortUtil.swap(data,pivotIndex,j); _qf39fM;\
#@OPi6.#!<
int k=partition(data,i-1,j,data[j]); bA,Zfsr6#
SortUtil.swap(data,k,j); -$o0P'Vx
if((k-i)>1) quickSort(data,i,k-1); `j@1]%&z
if((j-k)>1) quickSort(data,k+1,j); 3.?be.cq
6];3h>c]N
} r9&m^,U
/** qE[YZ(/f0&
* @param data O7
aLW
* @param i |&JeJ0k>~
* @param j (1[59<cg]
* @return jhf3(hx&F
*/ u-,}ug|
private int partition(int[] data, int l, int r,int pivot) { vio>P-2Eho
do{ eIalcBY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v;e8W9M
SortUtil.swap(data,l,r); \alV #>J5
} >":xnX#
while(l SortUtil.swap(data,l,r); =?.oH|&\h
return l; wxo
} 3._
ep
:gU5C Um
} o=($'(1
c**&, aL
改进后的快速排序: H,L{N'[Xph
UTyV6~
package org.rut.util.algorithm.support; Ha-]U:Vcx
%r(WS_%K|
import org.rut.util.algorithm.SortUtil; `9K5 ;]
Z)W8Of_
/** '^_u5Y]
* @author treeroot E^F<"mL*
* @since 2006-2-2
< v]
* @version 1.0 :Fb>=e
*/ lJu^Bcrv
public class ImprovedQuickSort implements SortUtil.Sort { 2r!ltG3}
v{a%TA9-
private static int MAX_STACK_SIZE=4096; %DKFF4k
private static int THRESHOLD=10; Z*co\ pW
/* (non-Javadoc) edp
I?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (4R(5t
*/ h.>SVQzU
public void sort(int[] data) { R}Lk$#S#
int[] stack=new int[MAX_STACK_SIZE]; J/4T =:\
1^WGJ"1
int top=-1; v<!S_7h
int pivot; C!5A,| DX
int pivotIndex,l,r; ?8V.iHJk
,D+ydr
stack[++top]=0; Ocx"s\q(
stack[++top]=data.length-1; sg
$db62>
;AEfU^[
while(top>0){ LBK{-(%
int j=stack[top--]; 2@zduL'do_
int i=stack[top--]; Sf, z
pD$4nH4KST
pivotIndex=(i+j)/2; Iy9hBAg\y
pivot=data[pivotIndex]; |q77
+H2Jhgi
SortUtil.swap(data,pivotIndex,j); Y7}>yC/GY
:G1ddb&0+
file://partition ?J\&yJ_B
l=i-1; }]vUr}Els
r=j; :DN!1~ZtW
do{ <xy@%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q`<:CfCt
SortUtil.swap(data,l,r); P9cx&Hk9
} 2^WJ1: A
while(l SortUtil.swap(data,l,r); d+JK")$9C
SortUtil.swap(data,l,j); o]e,5]
lnZ{Ryo(
if((l-i)>THRESHOLD){ 5.~Je6K U
stack[++top]=i; '8X>,un
stack[++top]=l-1; S 5S\zTPIf
} 6ZQ |L=Ytp
if((j-l)>THRESHOLD){ QQ3<)i
stack[++top]=l+1; !,Uo{@E)Y
stack[++top]=j; m+Ye`]
} +FTc/r
"Lbsq\W>
} q3$8"Q^
file://new InsertSort().sort(data); [A-_?#cZ
insertSort(data); Nn. 9J
} dDa V2:4E
/** K~
eak\=
* @param data D|LO!,=b
*/ y7,fFUKl
private void insertSort(int[] data) { p&<Ssc
int temp; U6]#RxH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;t&q|}x"
} l76=6Vtb
} Xsq@E#@S
} *'/,
P>7Xbm,VP
} x>#{C,Fi
W>@ti9\t
归并排序: jdxHWkQ
TrjyU
package org.rut.util.algorithm.support; =A"Abmx|
\H] |5fp*
import org.rut.util.algorithm.SortUtil; uAO!fE}CJ
>f]/VaMH{
/** KUI{Z I
* @author treeroot cbzA`b'Mg
* @since 2006-2-2 N"S`9B1eD(
* @version 1.0 pi"H?EHk
*/ ;.>*O
oe&
public class MergeSort implements SortUtil.Sort{ sfM"!{7
9p{4-]
/* (non-Javadoc) #t+?eye~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :5t4KcQ
*/ #I/P9)4
public void sort(int[] data) { Qa{5]+E
int[] temp=new int[data.length]; VdHT3r
mergeSort(data,temp,0,data.length-1); iGW|j>N
} U%q)T61
KYFKH+d>m
private void mergeSort(int[] data,int[] temp,int l,int r){ P3zUaN\c
int mid=(l+r)/2; RM2Ik_IH[l
if(l==r) return ; ewMVUq*:
mergeSort(data,temp,l,mid); F]$ Nu
mergeSort(data,temp,mid+1,r); 37U8<
for(int i=l;i<=r;i++){ ]>n{~4a
temp=data; (t4i&7-
} Oyl~j#h
int i1=l; 7H7
Xbi@
int i2=mid+1; 6$`< Y?
for(int cur=l;cur<=r;cur++){ _{*} )&!M
if(i1==mid+1)
0,Ds1y^
data[cur]=temp[i2++]; bfxE}>
else if(i2>r) 5nG\J
g7
data[cur]=temp[i1++]; "Lp.*o
else if(temp[i1] data[cur]=temp[i1++]; /vQ)$;xf#
else */aY$aWv
data[cur]=temp[i2++]; .n 9.y8C
} V._-iw]v
} 9[eiN
$@AJg
} yzS]FwW7
-X.#Y6(
改进后的归并排序: ~;"eNg{T
(}A$4?
package org.rut.util.algorithm.support; ,1]UOQ>AP
'}OdF*L
import org.rut.util.algorithm.SortUtil; X5)D [aE6
529;_|
/** K;
#FU
* @author treeroot #VQZ"7nI@
* @since 2006-2-2 VfnL-bDGV
* @version 1.0 W|PAI[N
*/ j=0kxvp
public class ImprovedMergeSort implements SortUtil.Sort { l)u%`Hcn
!wYN",R-
private static final int THRESHOLD = 10; ?JuJu1
CsR[@&n'
/* mF6-f#t>H+
* (non-Javadoc) 6uRE9h|
* xdSMYH{2A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z
g7Q`
*/ YD4I2'E
public void sort(int[] data) { a*M|_&MH*
int[] temp=new int[data.length]; %['NPs%B
mergeSort(data,temp,0,data.length-1); WBjJ)vCA.
} Kzev] er
}e7Rpgu
private void mergeSort(int[] data, int[] temp, int l, int r) { `m 5\
int i, j, k; Es=G' au
int mid = (l + r) / 2; [@K'}\U^+
if (l == r) H1N@E}> |
return; (kL"*y/"p
if ((mid - l) >= THRESHOLD) 4
]oe`yx
mergeSort(data, temp, l, mid); x?i
wtZ@
else %JeNDXbI4
insertSort(data, l, mid - l + 1); m(f`=+lqI`
if ((r - mid) > THRESHOLD) dle\}Sy=
mergeSort(data, temp, mid + 1, r); gwaSgV$z
else xF_u:}7`
insertSort(data, mid + 1, r - mid); IOHWb&N6
XpAJP++
for (i = l; i <= mid; i++) { z_c-1iXCW
temp = data; $WYt`U;*lj
} ekx(i
QA
for (j = 1; j <= r - mid; j++) { [if(B\&
temp[r - j + 1] = data[j + mid]; -jjB2xP
} 8:Hh;nl
int a = temp[l]; 5OdsT-y
int b = temp[r]; i4YskhT
for (i = l, j = r, k = l; k <= r; k++) { h7]+#U]mi
if (a < b) { }s2CND
data[k] = temp[i++]; ~}OaX+!
a = temp; ;D'm=uOl
} else { bdrE2m
data[k] = temp[j--]; zC*FeqFL<
b = temp[j]; l0&Fm:))k
} {aE[h[=r
} u6C_*i{2
} fw %p_Cm
C:1(<1K
/** a`Bp^(f}
* @param data AO<T6VK
* @param l or-k~1D
* @param i $HwF:L)*
*/ ]ZLF=
private void insertSort(int[] data, int start, int len) { O72g'qFPE
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +v/y{8Fu
} -zECxHjx
} CH7a4qL`
} AMrYT+1
} :[a*I6/^
F-kjv\
堆排序: j+!u=E
'@t,G,FJ
package org.rut.util.algorithm.support; w/NT 5
_;}$/
import org.rut.util.algorithm.SortUtil; } W]A`-Jv
$mxG-'x%K
/** :{<|,3oNdR
* @author treeroot Q
&/5B
* @since 2006-2-2 c@>ztQU*
* @version 1.0 KXMf2)pa
*/ Lginps[la
public class HeapSort implements SortUtil.Sort{ .*NPoW4Kv
YusmMsN?
/* (non-Javadoc) MTt8O+J?P~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU *: M8k
*/ x|Uwk=;X|s
public void sort(int[] data) { )d[n-Si
MaxHeap h=new MaxHeap(); jP+{2)z"W
h.init(data); d8Vqmrc~
for(int i=0;i h.remove(); {X?Aj >l
System.arraycopy(h.queue,1,data,0,data.length); D <~UaHfk
} @zGF9O<3,@
M8lw;
(
private static class MaxHeap{
n\9IRuYO
l_k:OZ
void init(int[] data){ XY)X-K$
this.queue=new int[data.length+1]; xkf2;
for(int i=0;i queue[++size]=data; W.
d',4)
fixUp(size); YUSrZ9Yg
} Z7wl~Hk
} rFcz0
~xzr8 P
private int size=0; b!t[PShw^
#2|biTJ
private int[] queue; P}'B~~9W
uznqq}
public int get() { }#g]qK
return queue[1]; /y1+aTiJ
} L%[>z'Zp
="G2I\
public void remove() { 7j|CWurvq
SortUtil.swap(queue,1,size--); i&(1<S>P
fixDown(1); L0VZ>!*o
} H8g6ZCU~
file://fixdown .Z]hS7t
private void fixDown(int k) { ;u`8pF!_eE
int j; !,$K;L
while ((j = k << 1) <= size) { Bor_(eL^
if (j < size %26amp;%26amp; queue[j] j++; RaLV@>jPm
if (queue[k]>queue[j]) file://不用交换 Z<<=2Xl(
break; 3L2NenJB
SortUtil.swap(queue,j,k); r5[pT(XT]
k = j; 8(ZQM01;
} kjQW9QJ<
} &qY]W=9uK
private void fixUp(int k) { F<h+d917
while (k > 1) { {$t*XTY6R
int j = k >> 1; %1
RWF6
if (queue[j]>queue[k]) [PXq<ST
break; {KDN|o+%
SortUtil.swap(queue,j,k); ;t>4VA
k = j; =LY`K#
}
9PV]bt,
} C-ORI}o
dU_;2d$
} FD!8o
6yYjZ<
} %qsl<_&
]
0L=+=w
SortUtil: ZweAY.]e
;4dFL\KU
package org.rut.util.algorithm; VZ IY=Q>g
h#Rza-?"\
import org.rut.util.algorithm.support.BubbleSort; hrJ(] [8
import org.rut.util.algorithm.support.HeapSort; Yt =)=n
import org.rut.util.algorithm.support.ImprovedMergeSort; Bi9Q8#lh
import org.rut.util.algorithm.support.ImprovedQuickSort; g/l:q&Q<
import org.rut.util.algorithm.support.InsertSort; @=z.^I30
import org.rut.util.algorithm.support.MergeSort; wIAH,3!
import org.rut.util.algorithm.support.QuickSort; !m))Yp-"H
import org.rut.util.algorithm.support.SelectionSort; N,B!D~@
import org.rut.util.algorithm.support.ShellSort; yQ^, >eh
QiA}0q3]0
/** D
HQxu4
* @author treeroot #Rfcp!
* @since 2006-2-2 #|+4 `Gf^
* @version 1.0 tf54EIy5Y
*/ Q"NZE
public class SortUtil { f.j<VKF}
public final static int INSERT = 1; A
?tna6W:
public final static int BUBBLE = 2; * BrGh
public final static int SELECTION = 3; izcjI.3e,
public final static int SHELL = 4; k8J zey]X
public final static int QUICK = 5; oM>UIDCY_v
public final static int IMPROVED_QUICK = 6; AMB{Fssz
public final static int MERGE = 7; sWse
(_2
public final static int IMPROVED_MERGE = 8; mVS^HQ:
public final static int HEAP = 9; Hr=|xw8.
k:V9_EI=
public static void sort(int[] data) { hl0X,G+@
sort(data, IMPROVED_QUICK); 9BlpqS:P&
} :!cK?H$+
private static String[] name={ A[@koLCL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6d5J*y2
}; RX{}
UmU<
kWa5=BW2f
private static Sort[] impl=new Sort[]{ ,K@[+ R!
new InsertSort(), du'`&{_/
new BubbleSort(), ' A+L
#
new SelectionSort(),
PPy~dp
new ShellSort(),
%nUN
new QuickSort(), y5*zyd
new ImprovedQuickSort(), ]8"U)fzmc.
new MergeSort(), }'}n~cA.{
new ImprovedMergeSort(), %${$P+a`D
new HeapSort() /Q)I5sL@E
}; `<~=6H
8G$BQ
public static String toString(int algorithm){ <L*`WO]\l
return name[algorithm-1]; wA7\K~fHV
} # X1a v
7.
$wK.
public static void sort(int[] data, int algorithm) { >}+R+''nR
impl[algorithm-1].sort(data); :81d~f7
} {A< 9 61
h|PC?@jp
public static interface Sort { 6~jAh@-
public void sort(int[] data); 1_!?wMo:f
} :_xfi9L~W0
7f
k)a
public static void swap(int[] data, int i, int j) { ~a4Y8r
int temp = data; Vh;|qF 9
data = data[j]; vm;%713#1
data[j] = temp; n8)&1
q?V
} $nW9VMa
} ?Bq^#i|m