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。 Q~_x%KN/`
插入排序: <=M }[
_s8_i6 Y
package org.rut.util.algorithm.support; ;xwQzu%M>5
{H2i+"cF
import org.rut.util.algorithm.SortUtil; Y\sjm]_
/** UXHFti/A<
* @author treeroot @1@WB]mQQ
* @since 2006-2-2 tO3 ;;%
* @version 1.0 ^&HYnwk
*/ e,8-P-h~T
public class InsertSort implements SortUtil.Sort{ !d(V7`8
d*L'`BBsp
/* (non-Javadoc) 1[^d8!U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y9)",G!
*/ ^ BKr0~4A
public void sort(int[] data) { :TI1tJS~*
int temp; z?,5v`,t2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <bI,y_<K
} ? Q}{&J
} VIzZmd
} EA.U>5Fq
&=bI3-
} to7)gOX(
|=s3a5sl
冒泡排序: 4>* `26
(.o'1'
package org.rut.util.algorithm.support; @4$E.q<0
za7wNe(s
import org.rut.util.algorithm.SortUtil; _wCSL.
W6Pg:Il7
/** C.<4D1}P
* @author treeroot bAp`lmFI
* @since 2006-2-2 \ua.%|
* @version 1.0 :xCobMs_/
*/ ny=iAZM>q
public class BubbleSort implements SortUtil.Sort{ F1>,^qyG6
9 lv2
/* (non-Javadoc) x}d\%*B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@. !Z8
*/ s8Oz^5p(
public void sort(int[] data) { #SueT"F
int temp; soF ^G21N
for(int i=0;i for(int j=data.length-1;j>i;j--){ g 7X>i:
if(data[j] SortUtil.swap(data,j,j-1); ,dBI=D'
} z/b*]"g,
} 4<|u~n*JF
} 7~'@m(9e
} G<'S
{y'kwU
} 9[Mu
jLTs1`I/F
选择排序: ?3#X5WT
srL,9)OC
package org.rut.util.algorithm.support; xh0!H|
R
STe;Sr&p
import org.rut.util.algorithm.SortUtil; AI2CfH#:C
h*LIS@&9C5
/** *?{)i~
* @author treeroot 5 *_#"
* @since 2006-2-2 /l
L*U
* @version 1.0 s/V[tEC*z
*/ t&_lpffv
public class SelectionSort implements SortUtil.Sort { ^gG,}GTl
rQJoaP+\q
/* YC~+r8ME$j
* (non-Javadoc) ^d,d<Uc
* 6]VTn-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v|6fqG+Q\
*/ N*fN&0r
public void sort(int[] data) { ?=/l@ d
int temp; +\4=G@P.J
for (int i = 0; i < data.length; i++) { 1Q<a+
l
int lowIndex = i; Yh=Zn[U
for (int j = data.length - 1; j > i; j--) { eo!z>9#.
if (data[j] < data[lowIndex]) { BeQJ/`
lowIndex = j; zx27aZ[
} _),@^^&x
} A Ho<E"R\
SortUtil.swap(data,i,lowIndex); eIJQ|p<v
} vJ!t.Vou
}
qcqf9g
2.yzR DfZ
} A!c.P2
ZD3S|1zSQ
Shell排序: ~0L>l J
E%TvGe;#
package org.rut.util.algorithm.support; d=[.
g(1'i 1
import org.rut.util.algorithm.SortUtil; \gdd
Z,*VRuA
/** ; ?!sU
* @author treeroot q6q=,<T%S
* @since 2006-2-2 7 UR)4dYA
* @version 1.0 @:}z\qBM
*/ q07>FW R
public class ShellSort implements SortUtil.Sort{ ;RXv%ML
]Sh&8 #
/* (non-Javadoc) m9/a!|fBE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q_!3<.sf
*/ E)Dik`Ccl
public void sort(int[] data) { ~34$D],D
for(int i=data.length/2;i>2;i/=2){ QeGU]WU{
for(int j=0;j insertSort(data,j,i); 1z)+P1nH]
} {zw#My
} gCmGFQE-f
insertSort(data,0,1); Y #\e~>K
} bbz86]AhY
#C|iW@
/** p?Y1^/
* @param data Ab2VF;z :
* @param j 1!~9%=%
* @param i |nD`0Rbw
*/ r_)*/
private void insertSort(int[] data, int start, int inc) { }G]]0Oi2
int temp; BP` UB
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yY}`G-)g~*
} 1UOFTI2S|
} bcQ$S;U)
} U9Sp$$L
*Nv<,Br,F
} Xh?{%?2
T+I|2HYqOj
快速排序: \!_ >ul
MD%86m{Sg=
package org.rut.util.algorithm.support; 56fcifXz@
>d=k-d
import org.rut.util.algorithm.SortUtil; -50|r;a
nF=h|rN
/** &`@K/Nf$9
* @author treeroot U@H SU%H
* @since 2006-2-2 Q.x3_+CX
* @version 1.0 [xHK^JP 8F
*/ .^/OL}/~<
public class QuickSort implements SortUtil.Sort{ G*ecM`Bl
=T[kGg8`
/* (non-Javadoc) &TKB8vx=#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {&xKSWNc
*/ \2uQ"kJC
public void sort(int[] data) { nfc&.(6x<
quickSort(data,0,data.length-1); Jg@PhN<9
} ALhu\x>AY
private void quickSort(int[] data,int i,int j){ ;%Qu;FtC
int pivotIndex=(i+j)/2; xand%XNv
file://swap J5429Soo
SortUtil.swap(data,pivotIndex,j); dH8H<K~
)H)HR`
int k=partition(data,i-1,j,data[j]); }psJ'aiG*
SortUtil.swap(data,k,j); .Ir 5gz
if((k-i)>1) quickSort(data,i,k-1); RK|C* TCnl
if((j-k)>1) quickSort(data,k+1,j); gVO[R6C5C
lOql(ZH`w
} Y6+nfh_
/** hS<+=3
<M
* @param data >xT8[
* @param i -e30! A
* @param j tv5SQ+AI3
* @return 0C7x1:
*/ G"wy?
private int partition(int[] data, int l, int r,int pivot) { 8dP^zjPj
do{ yKi* 8N"e<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^dQ#\uy
SortUtil.swap(data,l,r); $cnIsyKWY
} 60Y&)UR
while(l SortUtil.swap(data,l,r); gz8<&*2
return l; ;'*"(F=D6
} @Kp2l<P
~qs97'
} 4\>Cnc{
O",:0<
改进后的快速排序: M*|x,K= U
WJ8i,7
package org.rut.util.algorithm.support;
'RXhE
i&RPYbT{
import org.rut.util.algorithm.SortUtil; K^EW*6vB8O
=}F &jl
/** K%.\@l2Cp
* @author treeroot (z\@T`6`
* @since 2006-2-2 }PD?x4
* @version 1.0 h>9GfF3
*/ Hr:WE+'
public class ImprovedQuickSort implements SortUtil.Sort { LNtBYdB`pK
A?=g!( wB
private static int MAX_STACK_SIZE=4096; Ng2qu!F7
private static int THRESHOLD=10; kU0e;r1 N
/* (non-Javadoc) .hXxh)F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QYPsqkF*
*/ Ap=LlZ
public void sort(int[] data) { |X0h-kX4
int[] stack=new int[MAX_STACK_SIZE]; UO>ADRs}
m!V ?xGKJ
int top=-1; `$7.(.#s
int pivot; uPhFBD7
int pivotIndex,l,r; pri=;I(2A
-r7*C:E
stack[++top]=0; K}LmU{/t/
stack[++top]=data.length-1; P-.>vi^+
7']n_-fu
while(top>0){ IOtSAf
int j=stack[top--]; j@
lHgis
int i=stack[top--]; q{ i9VJ]
1TJ2HO=Y
pivotIndex=(i+j)/2; L TzD\C'
pivot=data[pivotIndex]; vWc =^tT
J4&d6[40
SortUtil.swap(data,pivotIndex,j); sA[hG*#/S
N*y09?/h
file://partition R5(<:]
l=i-1; !`JaYUL[e
r=j; q#$Al
do{ A!\g!*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {1Z8cV
SortUtil.swap(data,l,r); Dyyf%'\M
} Wxx?iW ,
while(l SortUtil.swap(data,l,r); [@(M%
SortUtil.swap(data,l,j); Bvb.N$G
*]:gEO
if((l-i)>THRESHOLD){ 9ldv*9v
stack[++top]=i; Js.2R$o =*
stack[++top]=l-1; Y[#EFM
} wylbs@
if((j-l)>THRESHOLD){ qj/
pd
7\
stack[++top]=l+1; -{n2^vvF
stack[++top]=j; ge
%ytrst
} /}t>o*
x
(e.?). e
} &@NTedg!
file://new InsertSort().sort(data); d e)7_pCF|
insertSort(data); K Rs
e
} _~]~ssn,1
/** >]s\%GO
* @param data noJ5h|
*/ ra2sYH1wr
private void insertSort(int[] data) { l+`f\ },
int temp; <pyLWmO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
~$cz`A
} v,Eqn8/O
} dY[ XNP
} 2[-@
.gH
_$g6Mj]1z
} iZm#
"}VG
4LO4SYW7
归并排序: HtY0=r
)lh48Ag0t;
package org.rut.util.algorithm.support; iYJ: P
5G
@
import org.rut.util.algorithm.SortUtil; s F-{(
F<H[-k*t/
/** A@M%}h
* @author treeroot 4j+FDc`
* @since 2006-2-2 ])Rs.Y{Q5
* @version 1.0 JWQd/
*/ 5yBaxw`
public class MergeSort implements SortUtil.Sort{ j=c=Pe"?u
7m='-_w)?w
/* (non-Javadoc) r?Q`b2Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xgeDfpF'
*/ 4u0\|e@a
public void sort(int[] data) {
qTxw5.Ai!
int[] temp=new int[data.length]; G4O
$gg
mergeSort(data,temp,0,data.length-1); YNHQbsZUI,
} dZ^(e0& :H
7 uy?%5
private void mergeSort(int[] data,int[] temp,int l,int r){ f+3ico]f@
int mid=(l+r)/2; ~hiJOaCzM
if(l==r) return ; 1V?)T
mergeSort(data,temp,l,mid); q+<<Ku(20
mergeSort(data,temp,mid+1,r); n/]w!
for(int i=l;i<=r;i++){ uT1xvXfqP
temp=data; /1D]\k()
} )\K ;Ncp[
int i1=l; Tx)!qpZ
int i2=mid+1; {p.D E
for(int cur=l;cur<=r;cur++){ 3QM; K^$
if(i1==mid+1) sVzU>
data[cur]=temp[i2++]; MX*T.TG8
else if(i2>r) NWL\"xp
`t
data[cur]=temp[i1++]; 4H
4W
else if(temp[i1] data[cur]=temp[i1++]; "!w$7|%T
else ,^Ug[pGG-
data[cur]=temp[i2++]; ^ &UezDTS
} ppYIVI
} 0 $Ygt0d
"p Rr>F a
} 8nV#\J9
x&^>|'H
改进后的归并排序: *,x-}%X
EuH[G_5e0
package org.rut.util.algorithm.support; MawWgd*
XHN*'@
77;
import org.rut.util.algorithm.SortUtil; s}1S6*Cr
[B0]%!hFw
/** mE>v (JY
* @author treeroot #k}x} rn<'
* @since 2006-2-2 6I8A[
* @version 1.0 ,q_'l?Pn
*/ _U
Q|I|V#
public class ImprovedMergeSort implements SortUtil.Sort { 1UHlA8w7Q
S{uKm1a
private static final int THRESHOLD = 10; &Y`V A
H]I^?+)9
/* <q}w, XU
* (non-Javadoc) PJ$C$G
* !\'NBq,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #saK8; tp
*/ ='rSB.$Ctk
public void sort(int[] data) { @Yzdq\FI
int[] temp=new int[data.length]; >0XB7sC
mergeSort(data,temp,0,data.length-1); U-]Rm}X\M
} =P}BAJ
W~W`fm
private void mergeSort(int[] data, int[] temp, int l, int r) { k_,wa]ws$
int i, j, k; "J.7@\^ h/
int mid = (l + r) / 2; 7NQ@q--3s
if (l == r) ]'"aVGqa.
return; [\_#n5
if ((mid - l) >= THRESHOLD) 'L k&iph
mergeSort(data, temp, l, mid); ( M$2CL
else n "J+?~9
insertSort(data, l, mid - l + 1); !EwL"4pPw
if ((r - mid) > THRESHOLD) :Qc[>:N
mergeSort(data, temp, mid + 1, r); @3aI7U/I
else NP+*L|-;
insertSort(data, mid + 1, r - mid); C<G`wXlP|
M= ]]kJ:I
for (i = l; i <= mid; i++) { M"W~%
temp = data; $E >)
} Uo<iZ3J
for (j = 1; j <= r - mid; j++) { {e/6iSpT
temp[r - j + 1] = data[j + mid]; U=Hx&g
} Hyn* O)q!
int a = temp[l]; K|a^<|
S
int b = temp[r]; ;:`0:Ao.
for (i = l, j = r, k = l; k <= r; k++) {
4tGP-
L
if (a < b) { 6he (v
data[k] = temp[i++]; G+k~k/D 6
a = temp; 1s "/R
} else { R3dt-v
data[k] = temp[j--]; Yw!(]8PYdU
b = temp[j]; >}I BPC
} Ho^rYz
} 2a,l;o$2&
} n){F
FM
mh$ Nwr/W:
/** `@tnEg
* @param data 3;E,B7,mQ
* @param l VV%Q "0\
* @param i 8am/5o
*/ =rL^^MZp
private void insertSort(int[] data, int start, int len) { ^#0k\f>_
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h%=>iQ%enc
} Shag4-*@hi
} BKJwM'~
} J]"IT*-Ht
} %~{G*%:
Jx-dWfe
堆排序: ",Ge:\TR=
[BLBxSL
package org.rut.util.algorithm.support; cs\/6gSCo
S!J wF&EW
import org.rut.util.algorithm.SortUtil; 7O\sQ]i6
m Bc2x8g)
/** dH[T nqJn
* @author treeroot 2 y;J 11\
* @since 2006-2-2 %fzZpd]v=,
* @version 1.0 D,( "3zx
*/ %Jb/HWC[
public class HeapSort implements SortUtil.Sort{ bAkCk]>5
O\z]1`i*o
/* (non-Javadoc) wU $j/~L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2<X.kM?N{B
*/ ?z/ )Hkw
public void sort(int[] data) { %9HL"
MaxHeap h=new MaxHeap(); $p?TE8G
h.init(data); C%LXGMt
for(int i=0;i h.remove(); p2)563#RS
System.arraycopy(h.queue,1,data,0,data.length); 4r+s"
|
} &X%vp?p
F-&=N {+
private static class MaxHeap{ muZ6 }&4
!J/fJW>m6
void init(int[] data){ 5;4bZ3e,0
this.queue=new int[data.length+1]; (imaL,M-D
for(int i=0;i queue[++size]=data; R{0nk
fixUp(size); 4],*y`& g
} 6 $*\%
} =VFPZ
~MZEAY9
private int size=0; gd=gc<z YP
a}#8n^2
private int[] queue; D>>?8a
rd\:.
public int get() { ji] H|
return queue[1]; &X`zk
} LagHzCB
,+mH1#-3
public void remove() { rq]zt2
SortUtil.swap(queue,1,size--);
#l<un<
fixDown(1); 9irT}e
} %j7HIxZh
file://fixdown mcgkNED
private void fixDown(int k) { lq[o2\
int j; UFOUkS
F
while ((j = k << 1) <= size) { 3;t {V$
if (j < size %26amp;%26amp; queue[j] j++; WA1h|:Z
if (queue[k]>queue[j]) file://不用交换 (h$[g"8
break; Z H1UAf
SortUtil.swap(queue,j,k); Q}qw`L1
k = j; 9=FqI50{
} K|Kc.
} M0$wTmXM
private void fixUp(int k) { #eZm)KFQg
while (k > 1) { [i 7^a/e
int j = k >> 1; {%! >0@7
if (queue[j]>queue[k]) K>_~zW nc
break; |tVWmm^m
SortUtil.swap(queue,j,k); *F)+- BB
k = j; ]@G$L,3
} 5 52U~t
} ) h>H}wDs
)i$:iI
>k
} D$&LCW#x
Lo-\;%y
} iFBH;O_~
_O w]kP='
SortUtil: (t%+Z"j
^{+,j}V_H
package org.rut.util.algorithm; 3~5%6`
7LZA!3
import org.rut.util.algorithm.support.BubbleSort; I4RUXi 5
import org.rut.util.algorithm.support.HeapSort;
|vVcO
import org.rut.util.algorithm.support.ImprovedMergeSort; |Js?@
import org.rut.util.algorithm.support.ImprovedQuickSort; V#-\ 4`c
import org.rut.util.algorithm.support.InsertSort; >mXq= 9L4
import org.rut.util.algorithm.support.MergeSort; M"l<::z
import org.rut.util.algorithm.support.QuickSort; wLW[Vur[
import org.rut.util.algorithm.support.SelectionSort; DM[gjfMXu
import org.rut.util.algorithm.support.ShellSort; 23|R $s>}i
?K9zTas@
/** l
NhX)D^t
* @author treeroot \]$TBN
dJ4
* @since 2006-2-2 $ytlj1.
* @version 1.0 {%PgR){qR
*/ {EL
J!o[
public class SortUtil { |tua*zEsS
public final static int INSERT = 1; M
s5L7S
public final static int BUBBLE = 2; Dc;zgLLL
public final static int SELECTION = 3; 78n`VmH~L
public final static int SHELL = 4; >/eV4ma"
public final static int QUICK = 5; %!HBPLk
public final static int IMPROVED_QUICK = 6; 4Y!_tZ>
public final static int MERGE = 7; 66jL2XU<
public final static int IMPROVED_MERGE = 8; HgfeSH
public final static int HEAP = 9; "(cMCBVYdA
E3`&W8
public static void sort(int[] data) { z($h7TZ$
sort(data, IMPROVED_QUICK); )(`HEl>-9c
} n+q a/<
private static String[] name={ J*}Qnl +
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?loP18S
b
}; F4$N:Jkl
s ;N PY
private static Sort[] impl=new Sort[]{ XkE'k;AEx
new InsertSort(), Z.x9SEe1t
new BubbleSort(), @Z{!T)#}j
new SelectionSort(), %`b
%TH^
new ShellSort(), XI8rU)q
new QuickSort(), tLc9-
new ImprovedQuickSort(), rV6SN.
new MergeSort(), blHJhB&8
new ImprovedMergeSort(), #OE]'k
Ss
new HeapSort() <
X&{6xu
}; }
0^wJs
Z<M?_<3
public static String toString(int algorithm){ ,{rm<M.)
return name[algorithm-1]; B$)&;Q
} B!iz=+RNC1
d4[mR~XXT
public static void sort(int[] data, int algorithm) { ^Ox|q_E
w}
impl[algorithm-1].sort(data); LkA_M'G
} w]Byl3}Gt
R3\oLT4
public static interface Sort { a-(OAzQ_
public void sort(int[] data); HAOl&\)7"_
} hnD=DLW $
<-avC/M$d
public static void swap(int[] data, int i, int j) { /ltGSl
int temp = data; Gj9WUv[P
data = data[j]; N sNk
data[j] = temp; v$_YZm{!<
} :^H#i:4
} `zmjiC