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。 jk~<si
插入排序: sviGS&J9h
9rhz#w
package org.rut.util.algorithm.support; bp }~{]:b
17-K~ybc
import org.rut.util.algorithm.SortUtil; mV-MJ$3r
/** Ba"Z^(:
* @author treeroot t ,0~5>5
* @since 2006-2-2 g%K3ah
v
* @version 1.0 JWLQ9UX
*/ ;(z0r_p<q
public class InsertSort implements SortUtil.Sort{ uJi|@{V
fNQecDuS
/* (non-Javadoc) zDX-}t_'q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m$]?Jq
*/ ZW2U9
public void sort(int[] data) { ur;8uv2o
int temp; &Oe,$%{hBh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1&U U6| X
} VQ+Xh
} %.]qkGZe#
} ~GZ(Ou-&
y8\44WKW
} 5WEF^1
OfPWqNpO
冒泡排序: %N 2=: ;f
Hg<]5
package org.rut.util.algorithm.support; }nkX-PG9
)H)HR`
import org.rut.util.algorithm.SortUtil; C/)Xd^#
.Ir 5gz
/** =V(I
* @author treeroot d>2>mT$U
* @since 2006-2-2 f"z96{zo
* @version 1.0 @X|Cu bJ
*/ E;k'bz
public class BubbleSort implements SortUtil.Sort{ 9%|!+!j
.QW89e,O3
/* (non-Javadoc) jfk`%CEk=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fF;-d2mF
*/ fxjs"rD5
public void sort(int[] data) { %{axoGd
int temp; WUKYwA/t
for(int i=0;i for(int j=data.length-1;j>i;j--){ ri6_u;Ch
if(data[j] SortUtil.swap(data,j,j-1); TeQpmhN
} K"eW.$
} QD<f)JZK
} :hZYh.y\l
} op;OPf,
>-f`mT
} k\A8Z[
rlgp1>89
选择排序: 2-FL&DE
0m!+gZ@
package org.rut.util.algorithm.support; ;8H
m#p7,
Tw=Jc 's
import org.rut.util.algorithm.SortUtil; NeQ/#[~g
0:Xvch0
/** OT+LQ TE
* @author treeroot :2}zovsdj
* @since 2006-2-2 o@vo,JU
* @version 1.0 tv5G']vO\
*/ 6Z0@4_Y@B6
public class SelectionSort implements SortUtil.Sort { aH*)W'N?
$0
eyp]XC\
/* 3V2"1Ic
* (non-Javadoc) ^As^hY^p
* >HXT:0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $o0o5 ^Z-
*/ n)gzHch
public void sort(int[] data) { ) m[0,
int temp; $)mK]57
for (int i = 0; i < data.length; i++) { ]7eQ5[5s
int lowIndex = i; 5?{a=r9
for (int j = data.length - 1; j > i; j--) { 2/3,%5j_
if (data[j] < data[lowIndex]) { hIE$u t +
lowIndex = j; oIN!3
}
\}Z5}~S
} IZ/+RO n
SortUtil.swap(data,i,lowIndex); [td)v,
} ~J)_S'
#
} <`}Oi5nW
1Jjay#
} E)7vuWOO
9t9x&.A
Shell排序: /^SIJS@^`>
(]>=y
package org.rut.util.algorithm.support; CNwIM6t
;N#d'E\
import org.rut.util.algorithm.SortUtil; E9i
M-Lw
1YL6:5n
/** 8c3Qd
* @author treeroot q#$Al
* @since 2006-2-2 A!\g!*
* @version 1.0 gs7h`5[es
*/ Dyyf%'\M
public class ShellSort implements SortUtil.Sort{ Wxx?iW ,
{26/SY
/* (non-Javadoc) j#hFx+S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gMS-mkZ
*/ 3 -Nwg9U
public void sort(int[] data) { Gm~jC <
for(int i=data.length/2;i>2;i/=2){ ErnjIx:
for(int j=0;j insertSort(data,j,i); ;EDc1:
} ~.;+uH<i
} YMb\v4
insertSort(data,0,1); >)\x\e
} m^I+>Bp/:
ZCVwQ#Xe+
/** )RG@D\t ,
* @param data 0]p!
Bscaf
* @param j 46OYOa
* @param i I?r7dQEm
*/ r)E9]"TAB
private void insertSort(int[] data, int start, int inc) { }86&?
0j.
int temp; O/
Yz6VQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^E{M[;sF3y
} bk^W]<:z`
} LX;w~fRr.
} 5n{J}0C
3D|Y4OM
} ;;;aM:6\
IYAvO%~
快速排序: lV924mh
|,#DB
package org.rut.util.algorithm.support; _kGJqyYV
2^RWGCEv
import org.rut.util.algorithm.SortUtil; Va"H.]
$De1 4
/** P&I%!'<
* @author treeroot A@M%}h
* @since 2006-2-2 4j+FDc`
* @version 1.0 ])Rs.Y{Q5
*/ VAPRI\uM;
public class QuickSort implements SortUtil.Sort{ `Tw DR6&
YD>5zV%!D
/* (non-Javadoc) 3h N?l
:/b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zcst$Aro
*/ :buH\LB*P
public void sort(int[] data) { 17kh6(X
quickSort(data,0,data.length-1);
qTxw5.Ai!
} cC@.&
private void quickSort(int[] data,int i,int j){ D#"BY;
J
int pivotIndex=(i+j)/2; V;}kgWc1
file://swap V}=%/OY?
SortUtil.swap(data,pivotIndex,j); T .#cd1b
k_d)
int k=partition(data,i-1,j,data[j]); f0"N
SortUtil.swap(data,k,j); LelCjC{`1
if((k-i)>1) quickSort(data,i,k-1); b~$B0o)
if((j-k)>1) quickSort(data,k+1,j); $r> $
u
0
]K\G55
} 3%HF" $Gg
/** ,zXP,(x
* @param data Yvmo%.oU
* @param i Z/
w}so
* @param j (S<Z@y+d
* @return j<,Ho4v}_
*/ ly_@dsU'
private int partition(int[] data, int l, int r,int pivot) { "^gV.
do{ hv.33l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $+'bRUo
SortUtil.swap(data,l,r);
%PF:OB6[|
} @9$u!ny0
while(l SortUtil.swap(data,l,r); %3SBs*?
return l; Lvco9
Ak
} o4Ny9s
VT@,RlB0
} 4DLp+6zP
ui>0?O*G
改进后的快速排序: (g(.gN]
A8|DB@Bi
package org.rut.util.algorithm.support; 6>L)
r [NI#wW
import org.rut.util.algorithm.SortUtil; Ku'OM6D<
I| Vyv
/** nf%"7 y{dd
* @author treeroot +F>9hA
* @since 2006-2-2 ^jph"a C
* @version 1.0 ioJ~k[T
*/ {:@MBA34
public class ImprovedQuickSort implements SortUtil.Sort { ;pH&YBY
iwiHw
private static int MAX_STACK_SIZE=4096; l( Y
U9dp
private static int THRESHOLD=10; 4k7
LM]
/* (non-Javadoc) fS@V`"O6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) owR`Z`^h)
*/ Uj/m
public void sort(int[] data) { #saK8; tp
int[] stack=new int[MAX_STACK_SIZE]; ='rSB.$Ctk
7A,QA5G]C
int top=-1; >0XB7sC
int pivot; U-]Rm}X\M
int pivotIndex,l,r; 9sQ#v-+Yx
E:7R>.g
stack[++top]=0; mQ$a^28=qR
stack[++top]=data.length-1; EdC^L`::
Jm#mC
while(top>0){ }Cs.Hm0P
int j=stack[top--]; r}>q*yx:
int i=stack[top--]; Tr\6AN?o
BdMmeM2h
pivotIndex=(i+j)/2; a ](Jc)
pivot=data[pivotIndex]; 2bnF#-(
DTx!# [
SortUtil.swap(data,pivotIndex,j); o)B`K."
v,eTDgw
file://partition jsp)e=
l=i-1; tMy<MO)Ei
r=j; U07G&?/
do{ tJ qd
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); AiDV4lHr
SortUtil.swap(data,l,r); =cP7"\
} BH;7CK=7R
while(l SortUtil.swap(data,l,r); ~ZxFL$<'3
SortUtil.swap(data,l,j); )8,) &F
SWq5=h
if((l-i)>THRESHOLD){ dv7IHUFf
stack[++top]=i; fR^aFT
stack[++top]=l-1; th4yuDPuA
} ' K\ $B_
if((j-l)>THRESHOLD){ Fv!KLw@
stack[++top]=l+1; $~G=Hcl9
stack[++top]=j; $D%[}[2
} fGf C[DuY
MJ%gF=$X
} {=Y3[
file://new InsertSort().sort(data); v:xfGA nP
insertSort(data); O_~vl m<#
} #q-7#pp
/** T+knd'2V6
* @param data QPZ|C{Ce
*/ _?m%i]~o
private void insertSort(int[] data) { jb'AOs
int temp; m|8ljXX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W]aX}>0
} cy%S5Rz
} Wf>P[6
} iH;IXv,b3
9|K3xH
} W&'[Xj
HuRq0/"
归并排序: c&]nAn(
{wS)M
package org.rut.util.algorithm.support; [(d))(M$|
PSR21;
import org.rut.util.algorithm.SortUtil; B{dR/q3;@
xA7Aw0
/** 8~6H\.0Q
* @author treeroot h!4jl0oX]
* @since 2006-2-2 2g`<*u*
* @version 1.0 Kc,=J?Ob
*/ i p"LoCE
public class MergeSort implements SortUtil.Sort{ yr"BeTrS.
Q[Xh{B
/* (non-Javadoc) _
!r]**
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GyP.;$NHa[
*/ =,HxtPJ
public void sort(int[] data) { 8
mFy9{M
int[] temp=new int[data.length]; <,\Op=$l3I
mergeSort(data,temp,0,data.length-1); NW
AT"
} L^b /+R#
6!Z>^'6
private void mergeSort(int[] data,int[] temp,int l,int r){ p@Va`:RDW
int mid=(l+r)/2; -w3KBlo
if(l==r) return ; )B1gX>J\8
mergeSort(data,temp,l,mid); %+F%C=GqI
mergeSort(data,temp,mid+1,r); Yfa` }hQ
for(int i=l;i<=r;i++){ +yO^,{8SE
temp=data; dF#`_!4pbf
} BJ,D1E
int i1=l; I%#&@
int i2=mid+1; y2=`NG=
for(int cur=l;cur<=r;cur++){ s(u,mtG
if(i1==mid+1) k __MYb
data[cur]=temp[i2++]; NB@TyU
else if(i2>r) #eZm)KFQg
data[cur]=temp[i1++]; [i 7^a/e
else if(temp[i1] data[cur]=temp[i1++]; {%! >0@7
else $?FA7=_
data[cur]=temp[i2++]; &'{?Y;A
} }r _d{nhi
} SAUfA5|e
W}0cM9 g
} ^h^\kW'#
FQp@/H^
改进后的归并排序: 7JL*y\'
~bsL
W:.'
package org.rut.util.algorithm.support; CA8N
S`?L\R.:
import org.rut.util.algorithm.SortUtil; %'`L+y
Xpp%j
/** |u5Xi5q.f
* @author treeroot T x
6\
* @since 2006-2-2 M%S.Z4D
(0
* @version 1.0 |Js?@
*/ V#-\ 4`c
public class ImprovedMergeSort implements SortUtil.Sort { 3`%U)gCT5
M"l<::z
private static final int THRESHOLD = 10; wLW[Vur[
6:$+"@ps
/* PS\n0
* (non-Javadoc) 8Vf]K}d
* fHc/5uYW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;mtv
*/ ?K>=>bS^h
public void sort(int[] data) { L4)
int[] temp=new int[data.length]; 1nAAs;`'
mergeSort(data,temp,0,data.length-1); 23_\UTM}1
} Dc;zgLLL
g$a
5
private void mergeSort(int[] data, int[] temp, int l, int r) { >/eV4ma"
int i, j, k; /tqQAvj
int mid = (l + r) / 2; p*l]I*x'<
if (l == r) Ph Ep3o&"
return; <>I4wqqb
if ((mid - l) >= THRESHOLD) k}tTl 2
mergeSort(data, temp, l, mid); "H"4]m1Wc
else
YgfQ{3^I
insertSort(data, l, mid - l + 1); iLR^ V!
if ((r - mid) > THRESHOLD) PEIf)**0N
mergeSort(data, temp, mid + 1, r); Z7:TPY$b
else Sn~h[s_(
insertSort(data, mid + 1, r - mid); sY*iRq
]Ac&h
aAP
for (i = l; i <= mid; i++) { -!JnyD
temp = data; \Ng|bWR>LQ
} gPYF2m
for (j = 1; j <= r - mid; j++) { %`b
%TH^
temp[r - j + 1] = data[j + mid]; XI8rU)q
} ]%I}hjJ
int a = temp[l]; Oqy&V&-C
int b = temp[r]; =(%+S<}
for (i = l, j = r, k = l; k <= r; k++) { %hO/2u
if (a < b) { Uc>$w?oA
data[k] = temp[i++]; ~Q36lR
a = temp; C;BC@OE
} else { $EUlh^
data[k] = temp[j--]; [L4s.l_#
b = temp[j]; |WMP_sGn
} g2t'u4>
} hDAxX=FM
} VzZ'W[/7)B
5L% \rH&N
/** s J~WzQ
* @param data JS{trqc1d
* @param l !b:;O
+[
* @param i cZd{K[fuK
*/ /ltGSl
private void insertSort(int[] data, int start, int len) { Gj9WUv[P
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); WK)2/$7@
} W]l&mr
} ),53(=/hl
} D @bnm
s
} i*9Bu;
SZ )AO8&
堆排序:
,]* MI"
~wl4
package org.rut.util.algorithm.support; mYRW/8+g
+PfXc?VU
import org.rut.util.algorithm.SortUtil; Wd78 bu|
!T3b]0z
/** 0'Y'K6hG`
* @author treeroot 1GA$nFBVC
* @since 2006-2-2 F9\T<
* @version 1.0 kEr;p{5
*/ ,'0Zd(s
public class HeapSort implements SortUtil.Sort{ !caY
)~CnDk}^R
/* (non-Javadoc) `L#`WC@[o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pjVF^gv,*
*/ ICxj$b
public void sort(int[] data) { ,Q>RtV
MaxHeap h=new MaxHeap(); E Qn4+
h.init(data); ,y%4QvG7a
for(int i=0;i h.remove(); :K]&rGi,
System.arraycopy(h.queue,1,data,0,data.length); <{xU.zp'
} zFpM\{`[g
G:k]tZ*`
private static class MaxHeap{ ugT;NB
$ &III
void init(int[] data){ {P[>B}'rW
this.queue=new int[data.length+1]; hI Q 2s
for(int i=0;i queue[++size]=data; xLp<G(;
fixUp(size); -Nn@c|fz
} YB&b_On,f
} 5l]G1+
08 $y1;
private int size=0; I(2qXOG
Y(D&JKx
private int[] queue; qzbpLV|
:\sz`p?EC
public int get() { A\IQM^i
return queue[1]; <!m'xOD
} zUNWcv!& "
l]wjH5mz=i
public void remove() { 2qQG
SortUtil.swap(queue,1,size--);
n9p_D
fixDown(1); W7 iml|WV0
} +q NX/F
file://fixdown BXx0Z
%e.3
private void fixDown(int k) { t!S ja
int j; 9+!1jTGSkf
while ((j = k << 1) <= size) { |yT-N3H@
if (j < size %26amp;%26amp; queue[j] j++; AXmW7/Sj"
if (queue[k]>queue[j]) file://不用交换 @s[Vtw%f
break; #Y9'n0 AL
SortUtil.swap(queue,j,k); qT}AY.O%^
k = j; g82_KUkB
} CRKuN
} w!8xZu
private void fixUp(int k) { FK ~FC:K
while (k > 1) { J#OiY
int j = k >> 1; JxlU=7cF
if (queue[j]>queue[k]) 1>wQ&{
break; g~#HiBgWq[
SortUtil.swap(queue,j,k); ZM$}Xy\9
k = j; FR%u1fi
} PRo;NE
} Uw:gJ9
SmR"gu
} Y%"6
@2HNYW)
} 0w24lVR.
E?@batIrf
SortUtil: KTzkJx
mxxuD"5
package org.rut.util.algorithm; h%0hryGB
Q
\E[py
import org.rut.util.algorithm.support.BubbleSort; n@"h^-
import org.rut.util.algorithm.support.HeapSort; ?~g X7{>
import org.rut.util.algorithm.support.ImprovedMergeSort; ]EhU8bZ
import org.rut.util.algorithm.support.ImprovedQuickSort; (w+dB8)X
import org.rut.util.algorithm.support.InsertSort; ~ R:=zGDV
import org.rut.util.algorithm.support.MergeSort; qDzd_E@aR
import org.rut.util.algorithm.support.QuickSort; W\W|v?r
import org.rut.util.algorithm.support.SelectionSort; B)1.CHV%<
import org.rut.util.algorithm.support.ShellSort; M1sR+e$"
p~h)@
/**
&1k2J
* @author treeroot ejID5NqG
* @since 2006-2-2 t(,_
* @version 1.0 4PVkKP'/
*/ vxmz3ht,Q
public class SortUtil { OB&lq.r
public final static int INSERT = 1; \4B2%H
public final static int BUBBLE = 2; /'S@iq
public final static int SELECTION = 3; n,.ZLuBEX
public final static int SHELL = 4; 4Em$L]7
public final static int QUICK = 5; +d=cI
public final static int IMPROVED_QUICK = 6; |i-d#x8
public final static int MERGE = 7; '&<T;V%
public final static int IMPROVED_MERGE = 8; !4ZszQg
public final static int HEAP = 9; k'hJ@6eKS
Gx.iZOOH/
public static void sort(int[] data) { 9sR?aW^$,/
sort(data, IMPROVED_QUICK); mV58&SZT
} 9)Jc'd|
private static String[] name={ HS% P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k8~/lE.Wy
}; H$j`75#u?-
) C?emTih
private static Sort[] impl=new Sort[]{ VXpbmg!{S
new InsertSort(), P%- @AmO^_
new BubbleSort(), )w.\xA~|
new SelectionSort(), k~<b~VcU
new ShellSort(), /<\B8^yQ
new QuickSort(), Ul41RNy)
new ImprovedQuickSort(), >>'t7U##
new MergeSort(), T<\!7RnLc
new ImprovedMergeSort(), ~S='~ g)
new HeapSort() ATdK)gG
}; XehpW}2\
(zm5
4
Vm
public static String toString(int algorithm){ QnWM<6xK"
return name[algorithm-1]; <`~zKFUQ[
} ]B;\?Tim
`9+>2*k
public static void sort(int[] data, int algorithm) { 2L'vB1`
impl[algorithm-1].sort(data); wGXnS"L!
} yLo{^4a.
##6_kcL:6G
public static interface Sort { R-8/BTls7
public void sort(int[] data); le*1L8n$'
} NvZ )zE
axRzn:f
public static void swap(int[] data, int i, int j) { 7:Jyu/*]
int temp = data; -]uN16\ F
data = data[j]; 8, >YB+Hb
data[j] = temp; z&"-%l.b@}
} u)DhkF|
} #\Q{?F!4