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。 K&`Awv
插入排序: Z6s5M{mE
ej[S u
package org.rut.util.algorithm.support; W'$kZ/%[
Uene=Q6>
import org.rut.util.algorithm.SortUtil; S`g;Y
'
/** <|F-Dd
* @author treeroot @)0 Y~A )
* @since 2006-2-2 uH{'gd,q8
* @version 1.0 5w3Fqu>39?
*/ 78Y@OL_$
public class InsertSort implements SortUtil.Sort{ h8v>zNf'
vOT*iax0
/* (non-Javadoc) X0i3 _RVa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h}Ygb-uZ
*/ mnQ'X-q3iO
public void sort(int[] data) { 4F#%f#"
int temp; R}%8s*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,b.n{91[]x
} wh6&>m#r
} GW
m4~]0E
} 3N%{B
tbG8MXX
} sBjXE>_#)
0X"\ a'M_
冒泡排序: esq<xuZM4
6Z c)0I'
package org.rut.util.algorithm.support; lo:~aJ8
Q"}s>]k3_
import org.rut.util.algorithm.SortUtil; L3c*LL
d6b.zP
/** uQp_':\k
* @author treeroot i?>Hr|
* @since 2006-2-2 *\q8BZ
* @version 1.0 rg)h5G
*/ #+G`!<7/@f
public class BubbleSort implements SortUtil.Sort{ }~zO+Wf2
Uf2:gLrF
/* (non-Javadoc) c E76L%O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xqWj|jA
*/ i^/54
public void sort(int[] data) { K`(#K#n
int temp; ^KH%mSX>
for(int i=0;i for(int j=data.length-1;j>i;j--){ 42@a(#z(U
if(data[j] SortUtil.swap(data,j,j-1); fValSQc!U
} $
I<|-]u
} uPU#c\
} d]7*mzw^j
} >d%VDjk .
Gpu_=9vzv
} _Ex?Xk
]
09y y
选择排序: DTy/jaK
M&e8zS
package org.rut.util.algorithm.support; EA yukM2
\(u@F<s-
import org.rut.util.algorithm.SortUtil; WOb8"*OM
# #>a&,
/** ptR
* @author treeroot 2PBepgQyPU
* @since 2006-2-2 !%62Phai
* @version 1.0 ;1E_o
*/ 9[{sEg=C$e
public class SelectionSort implements SortUtil.Sort { 3^ ~Zj95M
Czh8zB+r
/* Mjw[:70
* (non-Javadoc) {PmzkT}LF
* B\zoJg&7(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @_O3&ZK
*/ .zwVCW,u
public void sort(int[] data) { K+> V|zKuk
int temp; B1,?{Ur
for (int i = 0; i < data.length; i++) { 3 2y[
int lowIndex = i; Zd XKI{b
for (int j = data.length - 1; j > i; j--) { nKu(XgFv
if (data[j] < data[lowIndex]) { x!+Z{ x
lowIndex = j; ;MZbL)
} 1.dX)^\
} ZbyG*5iq
SortUtil.swap(data,i,lowIndex); I~k=3,7<
} 3_U\VGm
} enPYj.*/0
Hdna{@~
} Nh:4ys!P
Cqa3n[Mhw1
Shell排序: 6vWii)O.D
JD-Becz
package org.rut.util.algorithm.support; @>Ek '~m
_UIgRkl.
import org.rut.util.algorithm.SortUtil; +gNX7xuY
)|:8zDuJ
/** @?M;'xMbB
* @author treeroot 40+fGRyOL
* @since 2006-2-2
2%]t3\XW
* @version 1.0 Xv&%2-V;
*/ w 3d\0ub
public class ShellSort implements SortUtil.Sort{ j]Ua\|t
m9I(TOw
/* (non-Javadoc) f~iML5lG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1O4D+0@
*/ Vy r]
x
public void sort(int[] data) { w'XSb.\)_m
for(int i=data.length/2;i>2;i/=2){ x{j+}'9
for(int j=0;j insertSort(data,j,i); ++gPv}:$X
} ZR2\dH*
} l3\9S#3-^
insertSort(data,0,1); PbQE{&D#
} ]3 j[3'
qw)Key
/** %0 qc@4
* @param data Sy:K:Z|[U
* @param j fGo_NB
* @param i %cd]xQpCp
*/ W
n6,U=$3
private void insertSort(int[] data, int start, int inc) { IY~
{)X
int temp; $Uy#/MX
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H!#5!m&
} sB8p(
L
} %'kX"}N/
} epYj+T
sI4QI\*4
} Ho>p ^p
QdirE4W
快速排序: p>!1S
35}P0+
package org.rut.util.algorithm.support; 6\XP|n-0+0
WEps.]s
import org.rut.util.algorithm.SortUtil; &!4(
0u
tRkrV]K
/** zK,~ 37)\
* @author treeroot Jfe~ ,cI
* @since 2006-2-2 C\J@fpH(t`
* @version 1.0 #'#4hJ*YC
*/ Vj29L?3
public class QuickSort implements SortUtil.Sort{ VDPxue
g8Ok ^
/* (non-Javadoc) A?\h|u<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D`8E-Bq
*/ s^obJl3
public void sort(int[] data) { I?A~zigO
quickSort(data,0,data.length-1); 7/4~>D&-b
} ?DJuQFv
private void quickSort(int[] data,int i,int j){ +<H !3sW
int pivotIndex=(i+j)/2; YdPlN];[
file://swap vW9^hbdx
SortUtil.swap(data,pivotIndex,j); FV`3,NFk
@f-0X1C."N
int k=partition(data,i-1,j,data[j]); y B1W>s8&
SortUtil.swap(data,k,j); y+l<vJu
if((k-i)>1) quickSort(data,i,k-1); ST#PMb'izn
if((j-k)>1) quickSort(data,k+1,j); h=:*7>}
qmQFHC_
} Lax9
"xI
/** Qa>%[jx,@,
* @param data ozT._C
* @param i T..-)kL+p
* @param j W5TqC
* @return >Zi|$@7t-
*/ K~P76jAe$
private int partition(int[] data, int l, int r,int pivot) { HE9.
k.sS
do{ U9bFUK/z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kVy"+ZebK
SortUtil.swap(data,l,r); >>/nuWdpO
} "sC$%D<oc
while(l SortUtil.swap(data,l,r); \?J=mE@;1
return l; {c.}fyN
} 6ch@Be5*
VOD1xWrb
} qdKh6{
7'c8]/qh
改进后的快速排序: Ty)gPh6O
]eY Qio!
package org.rut.util.algorithm.support;
5L/Yi
Q,ZkeWQ7%
import org.rut.util.algorithm.SortUtil; v\J!yz
=#7s+ d-
/** C,V|TF.i2
* @author treeroot AviT+^7E
* @since 2006-2-2 Kv(Y }
* @version 1.0 3xc:Y>
*`
*/ ^w.k^U=B
public class ImprovedQuickSort implements SortUtil.Sort { VG? yL2y
A)= X?x
private static int MAX_STACK_SIZE=4096; }Ox2olUX
private static int THRESHOLD=10; Z`e$~n(Bh
/* (non-Javadoc) ':5U&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tW'qO:y+
*/ IO?~b X P
public void sort(int[] data) { [I#Q
int[] stack=new int[MAX_STACK_SIZE]; b=6ZdN1
fJ,8g/f8
int top=-1; 8f5%xY$
int pivot; 5;r({J
int pivotIndex,l,r; 6,sRavs
Y;~EcM
stack[++top]=0; rCV$N&rK
stack[++top]=data.length-1; LX&=uv%-^
!H2C9l:rd
while(top>0){ '5&B~ 1&
int j=stack[top--]; Ut0qrkqF
int i=stack[top--]; 37GHt9l
j(wY/Hl
pivotIndex=(i+j)/2; oXu~9'm$
pivot=data[pivotIndex]; p?EEox
y}.y,\S0
SortUtil.swap(data,pivotIndex,j); P#M<CG9
e!O &~#'h}
file://partition (cbB%
l=i-1; X7(rg W8
r=j;
M}_M_
do{ ?etj.\q6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C{lB/F/|!
SortUtil.swap(data,l,r); 7!]k#|u
} aC
$h_
while(l SortUtil.swap(data,l,r); F!DrZd>\
SortUtil.swap(data,l,j); YB(#]H|8S
L>|A6S#y8/
if((l-i)>THRESHOLD){ fh/)di
stack[++top]=i; wFH(.E0@Q
stack[++top]=l-1; XmE_ F
} nJnO/~|
if((j-l)>THRESHOLD){ kr &:;
stack[++top]=l+1; J\,@Bm|1n{
stack[++top]=j; X F0*d~4
} >QbI)if`1
mo97GW
} C 6:p Y-
file://new InsertSort().sort(data); <ZN)
/,4PS
insertSort(data); x %!OP\
} &QHA_+88W
/** m"ki*9]
* @param data 2g`uC}
*/ @=^jpSnZ
private void insertSort(int[] data) { vCrWA-q#
int temp; .-gm"lB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LQuYCfj|
} o>!~*b';g,
} 9 ;! uV>-H
} **
"s~
\n( 'KVbf
} M\x7=*\
`s]zk {x
归并排序: P-*RN
6'X.[0M
package org.rut.util.algorithm.support; X]f#w
k/6Gj}l'o
import org.rut.util.algorithm.SortUtil; FL*w(Br.
uvAy#,
/** QyBK*uNdV
* @author treeroot D(2kb
* @since 2006-2-2 =h1 QN
* @version 1.0 WHh2fN'A5
*/ e=NQY8?
public class MergeSort implements SortUtil.Sort{ %QlBFl0a
;U5x'}%0]
/* (non-Javadoc) Ib<5u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h3vm<R;
*/ 0L
4]z'5
public void sort(int[] data) { 7cQHRM+1
int[] temp=new int[data.length]; R&d_WB4w
mergeSort(data,temp,0,data.length-1); 4Q>jP3
} _<&K]e@dp
7xa@wa?!L
private void mergeSort(int[] data,int[] temp,int l,int r){ >H]|A<9u(
int mid=(l+r)/2; g#bfY=C
if(l==r) return ; 5<>R dLo
mergeSort(data,temp,l,mid); b&_u
O
mergeSort(data,temp,mid+1,r); Hr64M0V3B
for(int i=l;i<=r;i++){ HhT8YH
temp=data; ]((
>i%%~
} ztt%l #
int i1=l; k}owEBsn}
int i2=mid+1; uR[PKLh
for(int cur=l;cur<=r;cur++){ GqF.T#|
if(i1==mid+1) -p]`(S%
data[cur]=temp[i2++]; AfbA.-
else if(i2>r) R2Fh^x
data[cur]=temp[i1++]; clU3#8P!=
else if(temp[i1] data[cur]=temp[i1++]; 9jJ/ RX p
else JCMEhI6d*
data[cur]=temp[i2++]; Z~.]ZWj-
} E;+OD&|
} 1Tk\n
Yi! >8
} z ]4g`K+
sGm(Aax*0
改进后的归并排序: 6d?2{_} ,
Z6
|'k:R8
package org.rut.util.algorithm.support; qS`|=5f
F(kRAe;
import org.rut.util.algorithm.SortUtil; %2FCpre;
lr= !:D=K
/** F7PZV+\
* @author treeroot X;[zfEB
* @since 2006-2-2 '%r@D&*vp
* @version 1.0 8 H"f9S=K
*/ "u>sS
public class ImprovedMergeSort implements SortUtil.Sort { ucm.~1G(
?;=Y1O7N(
private static final int THRESHOLD = 10; 9Z_OLai
'V1 -iJj9
/* UHDI9>G~,
* (non-Javadoc) u:>3j,Cs
* C%7 ,#}[U/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9/qS*Zdh)
*/ uL{~(?U $
public void sort(int[] data) { ?@ye*%w_
int[] temp=new int[data.length]; ~{tZ;YZ
mergeSort(data,temp,0,data.length-1); >Ki]8&
} \/dm}' `
ur quVb
private void mergeSort(int[] data, int[] temp, int l, int r) { *'S%gR=Aa+
int i, j, k; }(7QJk5 j
int mid = (l + r) / 2; D0_x|a
if (l == r) g(F*Y>hk
return; h],%va[
if ((mid - l) >= THRESHOLD) 7)8}8tY^{
mergeSort(data, temp, l, mid); k=/|?%
else 2dlV'U_g
insertSort(data, l, mid - l + 1); .KMi)1L)
if ((r - mid) > THRESHOLD) 4oEq,o_
mergeSort(data, temp, mid + 1, r); u$ / ]59
else h[)aRo
insertSort(data, mid + 1, r - mid); 4 ~|TKd{
?F), 4Q
for (i = l; i <= mid; i++) { L5P}%1 _
temp = data; a/`Yh>ou
} |ssIUJ
for (j = 1; j <= r - mid; j++) { hb\Y )HSp/
temp[r - j + 1] = data[j + mid]; (dprY1noC
} ;77o%J'l
int a = temp[l]; .BB:7+
int b = temp[r]; WHk/mAI-s
for (i = l, j = r, k = l; k <= r; k++) { D{d$L9.
if (a < b) { COJ!b
data[k] = temp[i++]; Rm1` D
a = temp; CO+jB
} else { .7^-*HT}
data[k] = temp[j--]; 1X}Tp\e
b = temp[j]; a9_KQ=&CI
} JBJ7k19;
} ]O `
[v
} <UL|%9=~
9<r}s
/** p%y\`Nlgdx
* @param data Y,"MQFr(o
* @param l *U^hwL
* @param i *M<=K.*\G
*/ ]<?)(xz
private void insertSort(int[] data, int start, int len) { 1KR|i"
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &>b1ES.>
} ;l4\^E1
} 9{#|sABGD
} 'i-O
} n\p\*wb
D}U<7=\3H
堆排序: YGmdiY:;1
Qg.:w
package org.rut.util.algorithm.support; +B|X
k[
beR)8sC3q
import org.rut.util.algorithm.SortUtil; #E@i @'T
YfU#kvE'
/** k0uwG'(z9
* @author treeroot oKJ7i,xT
* @since 2006-2-2 <|G~S<y}
* @version 1.0 J0! E@
*/ M\6v}kUY
public class HeapSort implements SortUtil.Sort{ L=FvLii.
*g6o ;c
/* (non-Javadoc) c9@jyq_H?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ng*E9Puu[
*/ A:J{
public void sort(int[] data) { Xkm2C)
MaxHeap h=new MaxHeap(); -d)n0)9
h.init(data); !QspmCo+
for(int i=0;i h.remove(); dkp[?f)x
System.arraycopy(h.queue,1,data,0,data.length); -{%''(G
} tP{$}cEY
291|KG
private static class MaxHeap{ W
A}@n
gD=5M\
void init(int[] data){ R u-rp^a
this.queue=new int[data.length+1]; jdf@lb=5l
for(int i=0;i queue[++size]=data; Z!eq /
fixUp(size); w8ld*z
} (32nI?)a
} 9?c ^~77
5/ju
it
private int size=0; .)zISa*Xy
c3t8yifQ
private int[] queue; "?,6{\y,
(\>'yW{f
public int get() { -Lb^O/
return queue[1]; ,4,c-
} 2H "iN[2A
,quTMtk~
public void remove() { ,?/<fxIY
SortUtil.swap(queue,1,size--); %/on\*Vh3
fixDown(1); e_-/p`9
} {jf~?/<
file://fixdown ptQ(7N
private void fixDown(int k) { 0z#kV}wE
int j; 9-6_:N>
while ((j = k << 1) <= size) { -"H4brj;G
if (j < size %26amp;%26amp; queue[j] j++; O+j:L
if (queue[k]>queue[j]) file://不用交换 :n9^:srGZH
break; N|S xAg
SortUtil.swap(queue,j,k); L|w-s4L
k = j; !
fc)
} dhkpkt<G8
} 2GzpWV(
private void fixUp(int k) { AMz=HN
while (k > 1) { W9'jzP
int j = k >> 1; Yk?q7xuT
if (queue[j]>queue[k]) G'f"w5%qZv
break; $SR]7GZ
SortUtil.swap(queue,j,k); AgJ~6tK
k = j; %T\x~)
} n<*]`do,w
} %Ege^4PE
J7vpCw2ni
} 3fTI&2:
$(=1A>40
} ]H2aYi$
$t}1|q|
SortUtil: ,[L$
7bS[\5
package org.rut.util.algorithm; %m3efaC
p>S/6 [X
import org.rut.util.algorithm.support.BubbleSort; "|SE#k
import org.rut.util.algorithm.support.HeapSort; Z+(V \
import org.rut.util.algorithm.support.ImprovedMergeSort; xltu
g##
import org.rut.util.algorithm.support.ImprovedQuickSort; FG:BRS<m~
import org.rut.util.algorithm.support.InsertSort; ppKCY4
import org.rut.util.algorithm.support.MergeSort; 1+($"$ZC&B
import org.rut.util.algorithm.support.QuickSort; Beg5[4@
import org.rut.util.algorithm.support.SelectionSort; *rT(dp!Y
import org.rut.util.algorithm.support.ShellSort; gwT,D.'Ut
V0i$"|F+E
/** wP"|$HN
* @author treeroot F\bI6gj
* @since 2006-2-2 GGtrH~zx
* @version 1.0 pSFWNWQ'B
*/ caht4N{T
public class SortUtil { GYxI$y0:
public final static int INSERT = 1; =)8fE*[s
public final static int BUBBLE = 2; l.l~K%P'h
public final static int SELECTION = 3; KW^aARJ)
public final static int SHELL = 4; a0\UL"z#+
public final static int QUICK = 5; !yrHVc
public final static int IMPROVED_QUICK = 6; 926oM77
public final static int MERGE = 7; "@$STptkc
public final static int IMPROVED_MERGE = 8; ?UDO%`X
public final static int HEAP = 9; )A=g# D#
_<Yo2,1^
public static void sort(int[] data) { %WR"85
sort(data, IMPROVED_QUICK); *`T&Dlt'8
} H_nJST<v`
private static String[] name={ 7+4"+CA
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8ZfIh
}; 7:'>~>'
c F]3gM
private static Sort[] impl=new Sort[]{ =lQ[%&
new InsertSort(),
5AU3s
new BubbleSort(), bz]O(`
new SelectionSort(), oW6<7>1M7
new ShellSort(), $t'I*k^N
new QuickSort(), 3
?~+5DU
new ImprovedQuickSort(), 1s[-2^D+EM
new MergeSort(), 'U$VOq?!
new ImprovedMergeSort(), e8<nPt`C
new HeapSort() ~W{h-z%q
}; v*'\w#
[S+-ovl
public static String toString(int algorithm){ C/VYu-p%
return name[algorithm-1]; *?Ef}:]
} N)WG~=Gi
X(28xbd|
public static void sort(int[] data, int algorithm) { ;NeEgqW"
impl[algorithm-1].sort(data); MiM=fIuw@s
} ][#*h`I
m]q!y3
public static interface Sort { 6qpV53H
public void sort(int[] data); $VIq)s2az|
} I]1Hi?A2
|9$'?4F
public static void swap(int[] data, int i, int j) { )m;qv'=!
int temp = data; Fxx2vTV4ag
data = data[j]; /+O8A}
data[j] = temp; 15DK\_;
} Hd`p_?3]
} -GVG1#5