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。 4*vV9*'!
插入排序: +"HLx%k
p!wx10b
package org.rut.util.algorithm.support; C72!::o
EG|fGkv"
import org.rut.util.algorithm.SortUtil;
d77->FX2
/** '. '}
* @author treeroot 6_.K9;Gd
* @since 2006-2-2 F^mMyK
* @version 1.0 *t-Wol
*/ 2
u{"R
public class InsertSort implements SortUtil.Sort{ UDUj
wj$J}F
/* (non-Javadoc) 5jb/[i^V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "iC*Eoz#.
*/ j18qY4Gw)
public void sort(int[] data) { AdWLab;
int temp; @2>j4Sc
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \>%.ktG
} REe<k<>p~
} >Wbt_%dKy
} l1utk8'-
:4(.S<fH)-
} uoIvFcb^
'0juZ~>}
冒泡排序: TO|&}sDh
LG/6_t}
package org.rut.util.algorithm.support; e_6-+l!f
e9 `n@
import org.rut.util.algorithm.SortUtil; 1lJY=`8qa
M2.Pf s
/** 3,QsB<9Is
* @author treeroot 9\aR{e,1
* @since 2006-2-2 QS*!3?%
* @version 1.0 O6[, K1,
*/ xMb)4 cw}
public class BubbleSort implements SortUtil.Sort{ FuKp`T-H
9~En;e
/* (non-Javadoc) !}TZmwf'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jYv`kt
*/ 7a4b,-93
public void sort(int[] data) { z
TM1 e
int temp; Eed5sm$H
for(int i=0;i for(int j=data.length-1;j>i;j--){ \+STl#3*q
if(data[j] SortUtil.swap(data,j,j-1); (}|QSf:
} ,dG2[<?o
} /;[Zw8K7
} 7E-1
#4
} S\F;b{S1
e{~3&
} 0rjH`H]M
B}(+\Q$I
选择排序: [YsN c
2[ #7YWs
package org.rut.util.algorithm.support; (eOzntp8
|?tUUT!`t
import org.rut.util.algorithm.SortUtil; 2GHmA_7P
'}Tf9L%
/** POl[]ni=>
* @author treeroot $Eo)i
* @since 2006-2-2 !D_Qat
* @version 1.0 C|@6rr9TA
*/ "8'aZ.P
public class SelectionSort implements SortUtil.Sort { %s^2m"ca}=
~; emUU
/* YCWt%a*I'
* (non-Javadoc) {NS6y \,
* bm &$wf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Ka-ZPy<#
*/ ;Tn$c70
public void sort(int[] data) { I1IuvH6
int temp; jmDQKqEc|l
for (int i = 0; i < data.length; i++) { N<e=!LV
int lowIndex = i; '\&t3?;
for (int j = data.length - 1; j > i; j--) { Oc51|[
Wj
if (data[j] < data[lowIndex]) { e)Be*J]4
lowIndex = j; 4FWb5b!A=
} XJs*DK
} -UHa;WH
SortUtil.swap(data,i,lowIndex); @F+zME
}
S#kA$yO
} '`/Qr~]
:#?Z)oQpT
} `<0{U]m
aQMUC6cPM@
Shell排序: K!JXsdHK
.5i\L OTd
package org.rut.util.algorithm.support; 3XCePA5z
(zVT{!z
import org.rut.util.algorithm.SortUtil; Ic%c%U=i
2=&4@c|cn
/** -*Voui
* @author treeroot jO|D #nC
* @since 2006-2-2 C6$F.v
* @version 1.0 aCq ) hR
*/ vy
<(1\
public class ShellSort implements SortUtil.Sort{ <3[,bTIk
7_HJ|QB
/* (non-Javadoc) Y5 BWg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0"u-UX{
*/ : J3_g<@
public void sort(int[] data) { GW]b[l
for(int i=data.length/2;i>2;i/=2){ }#~DX!Sj
for(int j=0;j insertSort(data,j,i); Fp_?1y
} u~WE}VC
} Ik4FVL8~
insertSort(data,0,1); Qh4<HQ<9
} O%1X[
?k5m1,fHW
/** ^""Ss
* @param data r+4<Lon~
* @param j N^ )\+*tf1
* @param i d)_fI*:f
*/ m0: IFE($
private void insertSort(int[] data, int start, int inc) { XM9}ax
int temp; YA";&|V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KA=cIm
} *Zj2*e{Z9U
} :sf(=Y.qA
} 9^ DXw!
J=%(f1X<W
} B4hT(;k
b3>`%?A
快速排序: |f:1Br
4x`.nql
package org.rut.util.algorithm.support; 7K 8tz}
"sM
3NY
import org.rut.util.algorithm.SortUtil; *J ]2"~_.
Ju0W
/** ?)8OC(B8q
* @author treeroot yX-h|Cr"
* @since 2006-2-2 F%Xj'=
* @version 1.0 7a,/DI2o
*/ Y-0o>:SM
public class QuickSort implements SortUtil.Sort{ ]vFtByqn
Sk~( t
/* (non-Javadoc) 0Gq}x;8H&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )A@i2I
*/ Lrr1) h
public void sort(int[] data) {
$Ur-Q d
quickSort(data,0,data.length-1); *!~jHy8F
} O&]P
u5
private void quickSort(int[] data,int i,int j){ #RJFJb/
int pivotIndex=(i+j)/2; 4axc05
file://swap ceW,A`J
SortUtil.swap(data,pivotIndex,j); U_X /
w7(jSPB
int k=partition(data,i-1,j,data[j]); P?.j
w I
SortUtil.swap(data,k,j); lY.{v]i }
if((k-i)>1) quickSort(data,i,k-1); c]u^0X?&
if((j-k)>1) quickSort(data,k+1,j); "JH
/ODm
[m}58?0~x
} da'7*
&/
/** ,KfBG<3
* @param data #o(c=
* @param i &
V*_\
* @param j myR}~Cj;q
* @return K&\3j-8^
*/ yV'<l
.N
private int partition(int[] data, int l, int r,int pivot) { hC nqe
do{ =GP~h*5es
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NoR=:Q 9e
SortUtil.swap(data,l,r); xE[CNJ%t^,
} @(~m. p|
while(l SortUtil.swap(data,l,r); eSC69mfD
return l; O%>FKU>(?
} R*DQm
PB
W.nm
} B9Ha6kj
2l8TX #K
改进后的快速排序: Ykt{]#
r"%uP[H
package org.rut.util.algorithm.support; FL,av>mV
l'K3)yQEJ
import org.rut.util.algorithm.SortUtil; YFGQPg
wva| TZ
/** 5ree3 quh
* @author treeroot VSxls
* @since 2006-2-2 cNd;qO0$
* @version 1.0 4X()D {uR
*/ IK
/@j
public class ImprovedQuickSort implements SortUtil.Sort { !%1=|PX_
pejG%pJ
private static int MAX_STACK_SIZE=4096; EYsf<8cl
private static int THRESHOLD=10; Z7Y+rP[l
/* (non-Javadoc) kW
7$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ';CL;A ;
*/ ?>\JX
public void sort(int[] data) { N9[2k.oBH
int[] stack=new int[MAX_STACK_SIZE]; "I7 Sed7
b{Qg$ZJeR
int top=-1; No'^]r
int pivot; F1q a`j^'
int pivotIndex,l,r; *<5zMSZO
_(TYR*
stack[++top]=0; SviGLv;oR
stack[++top]=data.length-1; #nzVgV]
g4`)n`
while(top>0){ 1z#0CX}Y/H
int j=stack[top--]; dV:vM9+x
int i=stack[top--]; f<Co&^A
w`77E=
pivotIndex=(i+j)/2; 3Mw2;.rk
pivot=data[pivotIndex]; ^<