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。 \%/#x V
插入排序: TT50(_8
YX=2jI
package org.rut.util.algorithm.support; cC o`~7rE
+j(d| L\
import org.rut.util.algorithm.SortUtil; j=*l$RG
/** p/JL9@:'
* @author treeroot SrFS#
* @since 2006-2-2 ?+g`HTY u
* @version 1.0 S!Omy:=;i
*/ nl(WJKq'
public class InsertSort implements SortUtil.Sort{ K+Z+wA?
o;W`4S^
/* (non-Javadoc) $ e\h}A6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1z&Ly3
*/ i<H wTmm$
public void sort(int[] data) { B=>RH!&
int temp; Q:|l`*.R
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K=C!b?
} o Y1';&BO9
} '"?C4mbSl
} '"<6.,Ae
=Zu^8 0/
} V[}4L|ad
>N;F8v
冒泡排序: O(tX8P
Q5N
}tH[[4tw,
package org.rut.util.algorithm.support; nSF``pp+
U\veOQ;mW
import org.rut.util.algorithm.SortUtil; PqyA1
UA4J>1 i
/** -+7uy.@cS
* @author treeroot ?lbH02P{v
* @since 2006-2-2 vKq^D(&cl
* @version 1.0 |o2sbLp
*/ 7_.11$E=H
public class BubbleSort implements SortUtil.Sort{ (RUT{)p[
+2K :qvzZ
/* (non-Javadoc) i^_#%L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UPc<gB
*/ 6`0mta Q
public void sort(int[] data) { j4>a(
int temp; e$u4vC~
for(int i=0;i for(int j=data.length-1;j>i;j--){ zaFt*~@X
if(data[j] SortUtil.swap(data,j,j-1); sp7*_&'J
} 'WI^nZM
} ybeKiv9
} 9Ro6fjjE
} \k]x;S<a
B!dU>0&Ct
} =/u%c!
pG34Qw
选择排序: :}h>by=
rQOWLg!"
package org.rut.util.algorithm.support; 4B4Z])$3
s0*0 'f
import org.rut.util.algorithm.SortUtil; L4b:F0
xXY.AoO6
/** }R)=S_j
* @author treeroot i.xXb[M+
* @since 2006-2-2 DNR~_3Aq
* @version 1.0 )mJf|W!Z#
*/ {^m(,K_
public class SelectionSort implements SortUtil.Sort { ?_oF :*~\
[F_/2+e
/* UWZa|I~:J
* (non-Javadoc) e/*$^i+S
* m6MOW&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V~T@6S
*/ E]J:~H'Er
public void sort(int[] data) { R g?1-|Tj
int temp; AsPx?
for (int i = 0; i < data.length; i++) { n4R2^gXAw
int lowIndex = i; t4qej
for (int j = data.length - 1; j > i; j--) { l"{Sm6:;-
if (data[j] < data[lowIndex]) { X*g(q0N<S
lowIndex = j; >Jw6l0z
} rrnNn'
} u>Rb
?`
SortUtil.swap(data,i,lowIndex); ]Ni;w]KE
} `/"nTB
} jYVE8Y)my
|+:h|UIUQ
} (=16PYs
y8s!M
Shell排序: [3W*9j
kF{*(r=.o
package org.rut.util.algorithm.support; &(zfa&j|
aZet0?Qr
import org.rut.util.algorithm.SortUtil; aYn8^
hKNY+S})g
/** YC=S5;
* @author treeroot T#
lP!c
* @since 2006-2-2 WKpA|
* @version 1.0 B_ja&) !s1
*/ .}k(L4T|=
public class ShellSort implements SortUtil.Sort{ `k;KBW
ZUp\Ep}
/* (non-Javadoc) Y4F6qyP)"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \dlph
*/ z305{B:Y
public void sort(int[] data) { ;' nL:\
for(int i=data.length/2;i>2;i/=2){ >sD4R}\})
for(int j=0;j insertSort(data,j,i); E RdL^T>
} '.Ym!r~wL
} p0{EQT`tMG
insertSort(data,0,1); 1^dJg8
} _TUt9}
$&Kq*m 0g
/** {SZ % Xb o
* @param data <&pKc6+{
* @param j &[a Tw{2
* @param i D-IR!js ]
*/ {ub/3Uh
private void insertSort(int[] data, int start, int inc) { :%JC^dV(
int temp; T#!lPH :&h
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T;\^#1
} pi5GxDA]
} ~AG$5!
} CKlL~f EL
[4+q+
} 3+xy4G@L
fd8!KO
快速排序: VW@ x=m
t` 8!AhOgc
package org.rut.util.algorithm.support; p T[gdhc
K"<*a"1I
import org.rut.util.algorithm.SortUtil; -6=<#9R
)9=(|Lp
/** `@`1pOb
* @author treeroot RGD]8mw
* @since 2006-2-2 64j|}wJ$
* @version 1.0 hzY[
G:
*/ i3mAfDF
public class QuickSort implements SortUtil.Sort{ 2UP,Tgn..
V%CUMH =U
/* (non-Javadoc) PT9v*3Bq~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R4e&^tI@*
*/ 8[bkHfI
public void sort(int[] data) { !EF(*~r!9L
quickSort(data,0,data.length-1); )F pJ1
} >0Ev#cX4
private void quickSort(int[] data,int i,int j){ !OcENV
int pivotIndex=(i+j)/2; ,Vd7V}t
file://swap ~S; Z\
SortUtil.swap(data,pivotIndex,j); %*z-PT22
mzD^Y<LTd
int k=partition(data,i-1,j,data[j]); 8cm@a*2%
SortUtil.swap(data,k,j); jU=<r
if((k-i)>1) quickSort(data,i,k-1); WxGSv#u
if((j-k)>1) quickSort(data,k+1,j); *s)}Bj
Q;h3v1GC\P
} |@j_2Q,
/** r;iV$Rq!
* @param data *(GZ^QH.
* @param i 8v
yG*UK
* @param j uD>z@J-v
* @return Az,-
Cq
*/ MZ#T^Y
private int partition(int[] data, int l, int r,int pivot) { .dq
"k
do{
N<JHjq
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vz`@x45K
SortUtil.swap(data,l,r); o*ANi;1]&B
} 6ri#Lw
while(l SortUtil.swap(data,l,r); 8
#oR/Nt
return l; ?\H.S9CZ^
} $zkH|]
zZ
ErbSl
} (U87}}/l
;RN8\re
改进后的快速排序: q42FPq
ua
8m;>R
package org.rut.util.algorithm.support; GVd48 *
Jp;k+"<q
import org.rut.util.algorithm.SortUtil; lr('k`KOQ
LxJ6M/".
/** &1)xoZ'\
* @author treeroot *M~.3$NN
* @since 2006-2-2 EychR/s
* @version 1.0 rhY_|bi4P
*/ K]N~~*`%`
public class ImprovedQuickSort implements SortUtil.Sort { uhn%lV]
s` >H
private static int MAX_STACK_SIZE=4096; B}*V%}:)
private static int THRESHOLD=10; -G ?%QG`v
/* (non-Javadoc) w;yx<1f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y7zkAXhJ
*/ IG.f=+<0
public void sort(int[] data) { HdQj?f3
int[] stack=new int[MAX_STACK_SIZE]; Li`hdrO'ii
WOndE=(V
int top=-1; RfbdBsL
int pivot; v@T'7?s.
int pivotIndex,l,r; ]b[,LwB\`~
TGWdyIk
stack[++top]=0; EI`vVI
stack[++top]=data.length-1; rFXSO=P?Z
2mJ:c
while(top>0){ c %<2z
int j=stack[top--]; IUhp;iH
int i=stack[top--]; Ao`_",E
b>q6:=((
pivotIndex=(i+j)/2; 6S*zzJ.0K
pivot=data[pivotIndex]; 6$B'Q30}r
LZ&uj{ <
SortUtil.swap(data,pivotIndex,j); b!~TAT&8
2uu[52H8d%
file://partition [V< 1_zqt
l=i-1; QTh0SL
r=j; ;?im(9h"v!
do{ aR(E7mXQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &d
3HB=x
SortUtil.swap(data,l,r); f4]&pcK
} U6i~A9;
while(l SortUtil.swap(data,l,r); Hptq,~_t
SortUtil.swap(data,l,j); [y{E
~PUsgL^
if((l-i)>THRESHOLD){ {a4xF2
stack[++top]=i; Pe,;MP\2
stack[++top]=l-1; D=w9cKa
} 9H$g?';
if((j-l)>THRESHOLD){ A#:8X1w
stack[++top]=l+1; oYq,u@oM
stack[++top]=j; sQ(1/"gb
} lS{4dvr?w
lV7IHX1P
} -c$z 2Q)
file://new InsertSort().sort(data); 92(~'5Qr
insertSort(data); FrR9{YTA.
} 0}-#b7eR
/** RdkU2Y}V
* @param data S_T
*/ B/u*<k4
private void insertSort(int[] data) { T+W3_xIS X
int temp; 8on[%Vk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JTkCk~bX[z
} {F)E\)$G
} )_pt*xo
} x(yX0 ,P/7
nL\ZId
} nh. b/\o
-y <