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。 gTWl];xja
插入排序: *0zdI<Oe
y<mmv~=
package org.rut.util.algorithm.support; $;NxO0$
-q1vB8gjj
import org.rut.util.algorithm.SortUtil; ;okFm
/** ~]f+
* @author treeroot KdU!wsKfG
* @since 2006-2-2 j`jF{k b
* @version 1.0 !4-B
xeNY\
*/ #4S">u
public class InsertSort implements SortUtil.Sort{ z%cq%P8g
T0BFit6
/* (non-Javadoc) [kwVxaI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,!+>/RlJ
*/ ol]"r5#Q_H
public void sort(int[] data) { v`3q0,,
int temp; ~EJVlji
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ufF$7@(+
} OZ 4uk.)
} S <~"\<ED
} X,VOKj.%
'>dsROB->
} 2)}ic2]pn
g]au|$L4
冒泡排序: SXX6EIJr|
/V@~Vlww
package org.rut.util.algorithm.support; mU.(aLHW
0'u2xe
import org.rut.util.algorithm.SortUtil; j8WMGSrrF
! bbVa/
/** `s
HrC
* @author treeroot ZuZe8&
* @since 2006-2-2 yZ?|u57
* @version 1.0 [1{#a {4
*/ MX!t/&X(n
public class BubbleSort implements SortUtil.Sort{ gP=(2EVE
mFCDwh]
/* (non-Javadoc)
fNb2>1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) heQ<%NIA"
*/ {pJ{UJKv?
public void sort(int[] data) { XBQ]A89G
int temp; ,i KEIxA!
for(int i=0;i for(int j=data.length-1;j>i;j--){ <aps)vF
if(data[j] SortUtil.swap(data,j,j-1);
gC^4K9g
} M$&aNt;
} t\LAotTF/
} rPaUDR4U
} !V|i\O|Q2
Jlgo@?Lc
} W rvSYqN
MZp`
选择排序: >C,=elM
c%p7?3Ry
package org.rut.util.algorithm.support; S[p.`<{J
,>(/}=Z.
import org.rut.util.algorithm.SortUtil; i}SJ
DY2r6bcn`
/** \-(.cj)?
* @author treeroot ')C%CAYW
* @since 2006-2-2 ^6&?R?y
* @version 1.0 x3ds{Z$,>(
*/ GFM$1}
public class SelectionSort implements SortUtil.Sort { >q+o
MrU
J9s4lsea
/* vY|{CBGbd
* (non-Javadoc) wX(h]X"q
* paFiuQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d+FS
*/ ,_HSvs7-
public void sort(int[] data) { z'cVq}vl
int temp; (`S32,=TS
for (int i = 0; i < data.length; i++) { V%k #M
int lowIndex = i; {#>>dILPr
for (int j = data.length - 1; j > i; j--) { +#qW 0g
if (data[j] < data[lowIndex]) { 8@`"Zz M
lowIndex = j; Z^t" !oY
} H/!_D f
} $`7cs}#
SortUtil.swap(data,i,lowIndex); ZJUTti D
} jys1Ki
} s$g"6;_\
h<KE)^).
} U)IW6)q
9+'QH
Shell排序: t~mbe
L,!3
package org.rut.util.algorithm.support; Jpi\n-
d!
s)_Xj`Q#
import org.rut.util.algorithm.SortUtil; V}?d
,.m`{
)$18a
/** >T'=4n['
* @author treeroot *>otz5]
* @since 2006-2-2 xw?Mc{w
* @version 1.0 __x2xtrH
*/ q,b6).
public class ShellSort implements SortUtil.Sort{ dWR0tS6vR`
,E&PIbDL1
/* (non-Javadoc) P'Q|0lB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S $wx>715
*/ N>,`l
public void sort(int[] data) { lMpjE
for(int i=data.length/2;i>2;i/=2){ y+3<
]
N
for(int j=0;j insertSort(data,j,i); B8Ob~?
} }e}J6[wP
} H(qDQqJHYy
insertSort(data,0,1); W<Ms0
} 7:fC,2+
0bY}<x(;
/** sTu6KMn
* @param data tvNh@it:F
* @param j 0Q@
&z
* @param i om$x;L6
*/ !>$tRW?gH~
private void insertSort(int[] data, int start, int inc) { CD$0Z
int temp; XXuIWIhm
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sT|$@$bN
} :Ny.OA
} *5( h,s3&
} =-#>NlB$w
D{hsa
} o*5<Cxg
QR'yZ45n4
快速排序: KA )9&6
L_f u<W
package org.rut.util.algorithm.support; 5<o8prtB
j$l[OZ:#
import org.rut.util.algorithm.SortUtil; U68o"iE
fhx_v^<X
/** HKA7|z9{
* @author treeroot bLMN9wGOgK
* @since 2006-2-2 Rv9oK-S
* @version 1.0 {J`Zl1_q
*/ 0IHcyb
public class QuickSort implements SortUtil.Sort{ FBit/0
p|mt2oDjw
/* (non-Javadoc) c_#\'yeW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I!IWmU6FN
*/ 3QL I|VpO
public void sort(int[] data) { gXtyl]K:
quickSort(data,0,data.length-1); Q+e|;Mj
} plL##?<D<
private void quickSort(int[] data,int i,int j){ -phwzR\(t
int pivotIndex=(i+j)/2; J!?hajw7N
file://swap x1['+!01
SortUtil.swap(data,pivotIndex,j); ByR%2_6&
20[_eu)
int k=partition(data,i-1,j,data[j]); :S
Tj
<
SortUtil.swap(data,k,j); 8v&4eU'S
if((k-i)>1) quickSort(data,i,k-1); \B _g=K
if((j-k)>1) quickSort(data,k+1,j); JA!O,4
'J+dTs;0
} #KA,=J
/** O+vuv,gNi
* @param data ]Lg$p
* @param i mjdZ^
* @param j s&vREx(
* @return ?C#=Q6
*/ Q v/}WnBk
private int partition(int[] data, int l, int r,int pivot) { 8 VMe#41
do{ C3|(XChqC
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;>?NH6B,
SortUtil.swap(data,l,r); _tE`W96J
} PprCz"
while(l SortUtil.swap(data,l,r); <"I#lib
return l; N}0-L$@SL
} n[# !Q`D
\iFh-?(
} STMc@MeZU_
yLfb'Ba
改进后的快速排序: P]*,955*)
bYT,f.,5{
package org.rut.util.algorithm.support; }K\]M@
DgOO\
import org.rut.util.algorithm.SortUtil; h+o-h4X
'F[m,[T%x
/** %";bgU2Q
* @author treeroot `TvpKS5.Y
* @since 2006-2-2 I$@0FSl
* @version 1.0 \$o5$/oU(
*/ SH#-3&$[
public class ImprovedQuickSort implements SortUtil.Sort { 8r@_b
{"<D$*K~
private static int MAX_STACK_SIZE=4096; vu^ '+ky
private static int THRESHOLD=10; 9pN},F91n:
/* (non-Javadoc) `]L&2RS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ii"h:GY;\
*/ )l}Gwd]h
public void sort(int[] data) { 8^26g3
int[] stack=new int[MAX_STACK_SIZE];
'UGkL;
>3R)&N
int top=-1; , VT&
int pivot; h$`P|#V&
int pivotIndex,l,r; -nP
y?>p"|
AS[yNCsjC
stack[++top]=0; p<#WueR[
stack[++top]=data.length-1; 5 rpX"(
feOX]g#
while(top>0){ ?1\rf$l8
int j=stack[top--]; w0n.Y-v4i
int i=stack[top--]; @ i$jyc
;eYm+e^?.
pivotIndex=(i+j)/2; 29R_?HBH
pivot=data[pivotIndex]; zTODV<-`
#.|efdsG
SortUtil.swap(data,pivotIndex,j); E/MD]ox
3 ZO\Pu
file://partition `Pa z
l=i-1; tOx)t$ix
r=j; V=%j]`Os
do{ %3B0s?,I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #l kv&.)x
SortUtil.swap(data,l,r); IbFS8 *a\
} JQCQpn/
while(l SortUtil.swap(data,l,r); H+UA
SortUtil.swap(data,l,j); CAX)AN
^m^4LDt
if((l-i)>THRESHOLD){ 9V5}%4k%+
stack[++top]=i; i7hWBd4wK
stack[++top]=l-1; qx,>j4yw
} j9FG)0
if((j-l)>THRESHOLD){ ?7Kl)p3
stack[++top]=l+1; Z(F`M;1>xI
stack[++top]=j;
DEj6 ky
} @LQe[`
8G&'ED_&
} nksx|i l
file://new InsertSort().sort(data); {OA2';3
insertSort(data); ~\;s}Fv.
} JDi\?m d.
/** _.b ^4^[
* @param data t=
=+SHGP
*/ `ceetr=
private void insertSort(int[] data) { D?yiK=:08`
int temp; X=Qa TV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aj>6q=R
} d|T87K>|r"
} 0E[&:6#Y
} 3aL8GMiu
>)E{Hs
} Npq_1L
Aj9<4N
归并排序: KxZup\\:v
hzG+s#
package org.rut.util.algorithm.support; >NL4&MV:
$9LI v
import org.rut.util.algorithm.SortUtil; 7OF6;@<
v?\Z4Z|f
/** NJ6*
7Cd
* @author treeroot 6x?3%0Km
* @since 2006-2-2 g<ZB9;FX %
* @version 1.0 5,H,OZ}
*/ HB+{vuN*L
public class MergeSort implements SortUtil.Sort{ 0O,Q]P 82f
(yh zjN~
/* (non-Javadoc) g9N_s,3jC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oT=XCa5
*/ x6-bAf
public void sort(int[] data) { ~!bA<q
int[] temp=new int[data.length]; '3h"Ol{b
mergeSort(data,temp,0,data.length-1); /XfE6SBz
} E'_3U5U
?<mxv"
private void mergeSort(int[] data,int[] temp,int l,int r){ }q-* Ls~
int mid=(l+r)/2; =8Bq2.nlR
if(l==r) return ; Szz:$!t
mergeSort(data,temp,l,mid); <$ H-/~Y
mergeSort(data,temp,mid+1,r); X,+M?
for(int i=l;i<=r;i++){ G)|s(C!
temp=data; ?<