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。 O0z-jZ,])
插入排序: T88$sD.2
'
NpZ'pBl
package org.rut.util.algorithm.support; 9ThsR&h3
5JVBDA^#om
import org.rut.util.algorithm.SortUtil; guYP|
/** -M6vg4gf
* @author treeroot Gdb0e]Vt+
* @since 2006-2-2 5)S;R,
* @version 1.0 A\rY~$Vr
*/ T_c`=3aO
public class InsertSort implements SortUtil.Sort{ iUh7eR9
D9NRM;v
/* (non-Javadoc) +qjZ;5(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vb0Ca+}}
*/ nRqP_*]
public void sort(int[] data) { ym6Emf]
int temp; sq#C|v/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U:$zlfV
} U&B(uk(2
} )E=B;.FH
} hl**G4z9q
GYIQ[#'d7
} B^dMYFelJ
xC _3&.
冒泡排序: N)E'k%?,
"gI-S[
package org.rut.util.algorithm.support; @(a~p
M<Z#4Gg#4
import org.rut.util.algorithm.SortUtil; mD +9/O!
gM1:*YK
/** ~oSA&v4V
* @author treeroot CpN*1s})d
* @since 2006-2-2 XU}i<5
* @version 1.0 \)\n5F:Zu
*/
!vl1#@
public class BubbleSort implements SortUtil.Sort{ bupW*fD:
%1;Y`>
/* (non-Javadoc) 8cY5:plK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4jZt0
*/ jzDPn<WQ
public void sort(int[] data) { Lp$&eROFVs
int temp; N|>MqH,Bt
for(int i=0;i for(int j=data.length-1;j>i;j--){ <LBCu;
if(data[j] SortUtil.swap(data,j,j-1); 5ip ZdQ^
} kp[&SKU
c
} 7]L}~
} 5C`Vno~v
} ',FVT4OMw
SP2";,%/9
} lp$,`Uz`
6tVp%@
选择排序: JK^%V\m
DPnrzV)
package org.rut.util.algorithm.support; 0[ n;ZL~
/8_x]Es/
import org.rut.util.algorithm.SortUtil; p|;#frj
O[1Q#
/** ,82?kky
* @author treeroot 0[g5[?Vy
* @since 2006-2-2 i0x[w>\-
* @version 1.0 UeBSt.
*/ :WH0=Bieh
public class SelectionSort implements SortUtil.Sort { w{;bvq%lY
YL;*%XmAG
/* = "Lb5!
* (non-Javadoc) P6^\*xkMr
* ='eQh\T)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wjID*s[
*/ [e. `M{(TB
public void sort(int[] data) { 2+(SR.oGq
int temp; /6N!$*8
for (int i = 0; i < data.length; i++) { )J\
JAUj
int lowIndex = i; $Ovq}Rexc
for (int j = data.length - 1; j > i; j--) { K^AIqL8
if (data[j] < data[lowIndex]) { 8.`5"9Vh
lowIndex = j; p_g8d&]V
} \@6w;tyi
} zBrqh9%8e
SortUtil.swap(data,i,lowIndex); i"!j:YEo
} LGRhCOP:
} g fv?#mp
:NwFJc
} P]4u`&
z*^vdi0
Shell排序: viS7+E|O
Y-DHW/Z~
package org.rut.util.algorithm.support; $*0XWrE
kafj?F
import org.rut.util.algorithm.SortUtil; tN;~.\TKg
>?X(,c
/** F JxH{N6a
* @author treeroot .ddf'$6h
* @since 2006-2-2 ,}OQzK/"mP
* @version 1.0 ",E$}=
,Z
*/ _32 o7}!x
public class ShellSort implements SortUtil.Sort{ !|
GD8i
=WFG[~8
/* (non-Javadoc) #)%dG3)e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9qJ:h-?M
*/ Qo["K}Ty
public void sort(int[] data) { )!`>Q|]}Zd
for(int i=data.length/2;i>2;i/=2){ /EM=!@ka
for(int j=0;j insertSort(data,j,i); 5=_))v<Tp
} LCpS}L;
} ?
i|LO
insertSort(data,0,1); P.t7_v>
} >RmL0d#B
RjR
/** r<kqs,-~
* @param data ~rz%TDX0\
* @param j \%;5$ovV
* @param i _vE[TFy
*/ CM%;r5
private void insertSort(int[] data, int start, int inc) { +u7nx
int temp; ^w}BXVn
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UbwD2>
} 0_map z
} z"@UNypc,
} 8nRxx`U\q
?)c9!hR
} /kd6Yq(y
1QuR7p
快速排序: v|r#
klC48l
package org.rut.util.algorithm.support; ivl_=
UazUr=|e
import org.rut.util.algorithm.SortUtil; L)Ru]X`
gtb,}T=1
/** &uTK@ G+
* @author treeroot 7;:Uv=
* @since 2006-2-2 Rwz (20n\^
* @version 1.0 Q(YQ$i"S
*/ (=i+{
3`|
public class QuickSort implements SortUtil.Sort{ DKf:0E8
_Nq7_iT0
/* (non-Javadoc) >_?Waz%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <~!R|5sK
*/ !Ry4w|w
public void sort(int[] data) { :E9 @9>3S
quickSort(data,0,data.length-1); }#f~"-O
} baM@HpMhM
private void quickSort(int[] data,int i,int j){ 6Yx/m
int pivotIndex=(i+j)/2; {[.<BU-
file://swap 3LD`Ep
SortUtil.swap(data,pivotIndex,j); 6oLq2Z8uP
y{\K:
int k=partition(data,i-1,j,data[j]); ib)AC,LT
SortUtil.swap(data,k,j); Bso3Z ^X.
if((k-i)>1) quickSort(data,i,k-1); P"mD73a
if((j-k)>1) quickSort(data,k+1,j); (
u}tUv3
tqe8:\1yK
} a)Ca:p
/** B mxBbg
* @param data APu cA
* @param i yY42+%P
* @param j 09u@-
* @return .q7o7J%
*/ ;7Y4v`m
private int partition(int[] data, int l, int r,int pivot) { VpkkiN
do{ pO_L,~<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ({AqL#x`u
SortUtil.swap(data,l,r); | sio:QP
} =XT}&D6
while(l SortUtil.swap(data,l,r); ~<#!yRy>r
return l; U#!f^@&AB
} `[Xff24(eb
A5> ,e|
} |cE 69UFB
n XOJ
改进后的快速排序: Z6`[dAo
/!Ng"^.e
package org.rut.util.algorithm.support; %7~~*_G
H#;-(`F
import org.rut.util.algorithm.SortUtil; !*C9NX
<);Nc1
/** $R[ggH&
* @author treeroot !
uyC$8V*l
* @since 2006-2-2 AGxG*KuZ
* @version 1.0 ,s,VOyr @F
*/ ,2YkQ/>
public class ImprovedQuickSort implements SortUtil.Sort { KDX34Fr1
|H'4];>R?
private static int MAX_STACK_SIZE=4096; )tyhf(p6
private static int THRESHOLD=10; wd`lN,WiW
/* (non-Javadoc) #A2)]XvY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jQiKof>
*/ do1aH$Iw
public void sort(int[] data) { AG$S;)Yl9c
int[] stack=new int[MAX_STACK_SIZE]; ]dKLzW:l
'4nR ^,
int top=-1; *g<D p2`
int pivot; n_/_Y>{M0
int pivotIndex,l,r; gOA
RMx$]wn_
stack[++top]=0; jLs-v
stack[++top]=data.length-1; ~)JNevLZ
M6P`~emX2
while(top>0){ SGREpOlJ+
int j=stack[top--]; Sp=6%3fZ]m
int i=stack[top--]; [l2ds:
*3A[C-1~.
pivotIndex=(i+j)/2; ?p8(Uc#73
pivot=data[pivotIndex]; 6:(*u{
Iu`xe
SortUtil.swap(data,pivotIndex,j);
S=o1k
!V6O~#
file://partition q >|:mXR
l=i-1; }0P5~]S<5A
r=j; i<*{Z~B
do{ xmEmdOoD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v/E_A3Ay&
SortUtil.swap(data,l,r); ;9r `P_r
} 2%'iTXF
while(l SortUtil.swap(data,l,r); Ck|3DiRQ
SortUtil.swap(data,l,j); !kl9X-IiI
SWYIQ7*
if((l-i)>THRESHOLD){ L"akV,w4p
stack[++top]=i; y%21`y&Os
stack[++top]=l-1; '@ym-\,
} w7?&eF(w(
if((j-l)>THRESHOLD){ Ls#=R
stack[++top]=l+1; ]iyJ>fC
stack[++top]=j; ESl-k2
} G02(dj
|[tlR`A $
} PyD'lsV
file://new InsertSort().sort(data); vPn( ~d_
insertSort(data); *.UM[Wo
} 6p
X[m{
/** yu'2
* @param data <303PPX^6
*/ d+_wN2
private void insertSort(int[] data) { s 9,?"\0Zm
int temp; @"9^U_Qf1z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Efm37Kv5l
} $W46!U3
} J2BW>T!tuw
} ][|)qQ%V
06 kjJ4
} ]E1aIt
Qo!/]\
归并排序: ckXJ9>
ik@g; >pQD
package org.rut.util.algorithm.support; MVW2%6
7T]}<aK<c[
import org.rut.util.algorithm.SortUtil; dsKEWZ
=
z:hY{/-
/** T>l=0a #
* @author treeroot xr uQ=Q
* @since 2006-2-2 tK3.HvD
* @version 1.0 D6trqB
*/ {%(_Z`vI
public class MergeSort implements SortUtil.Sort{ M+X>!Os
`c^ _5:euX
/* (non-Javadoc) P#/k5]g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]o<'T.x
*/ :*aBiX"
public void sort(int[] data) { xF'9`y^]!@
int[] temp=new int[data.length]; FqOV/B
/z2
mergeSort(data,temp,0,data.length-1); Y|t] bb
} OAu?F}O
}LDH/#
u
private void mergeSort(int[] data,int[] temp,int l,int r){ [-X=lJ:+h
int mid=(l+r)/2; aHosu=NK
if(l==r) return ; Ctpr.
mergeSort(data,temp,l,mid); bDa(@QJ-
mergeSort(data,temp,mid+1,r); #{)=%5=c
for(int i=l;i<=r;i++){ =}Np0UP
temp=data; 2f8fA'|O
} `B{N3Kxbp
int i1=l; [HJ^'/bB'
int i2=mid+1; ^zv0hGk 2
for(int cur=l;cur<=r;cur++){ NJfI9 L
if(i1==mid+1) KLW#+vZ
data[cur]=temp[i2++]; seh1(q?Va4
else if(i2>r) pei-R
data[cur]=temp[i1++]; .'md `@t
else if(temp[i1] data[cur]=temp[i1++]; x:W nF62
else ozZW7dveU
data[cur]=temp[i2++]; $=7[.z&
} 'u }|~u?m
} ;iJ*.wVq
F V8K_xj
} M),i4a?2
\IL/?J
5d
改进后的归并排序: a"^0;a
nPp\IE}:
package org.rut.util.algorithm.support; ^EGe%Fq*x]
_T6l*D
import org.rut.util.algorithm.SortUtil; QMoh<[3qu
bce>DLF
/** _&TA|Da
* @author treeroot %./vh=5)
* @since 2006-2-2 pqmS
w
* @version 1.0 UPs*{m
*/ {_0m0
8
public class ImprovedMergeSort implements SortUtil.Sort { H#IJ&w|
zc&>RM
private static final int THRESHOLD = 10; -lr)z=})
eMk?#&a)
/* 6eSc`t&
* (non-Javadoc) 8_8r{a<xW
* 8OoKP4,;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `mTpL^f
*/ xSFY8
public void sort(int[] data) { V)M+dhl
int[] temp=new int[data.length]; Q}p+/-U\
mergeSort(data,temp,0,data.length-1); TfaL5evio
} L>~wcoB
%N#8D<ULd
private void mergeSort(int[] data, int[] temp, int l, int r) { Ek|#P{!
int i, j, k; >p4#AfGF
int mid = (l + r) / 2; &kKopJH
if (l == r) 6/^$SWd2
return; ',L>UIXw
if ((mid - l) >= THRESHOLD) 0e1W&
mergeSort(data, temp, l, mid); SoZ$1$o2
else Mg?^ 5`*
insertSort(data, l, mid - l + 1); Y !e
if ((r - mid) > THRESHOLD) 4.|-?qG
mergeSort(data, temp, mid + 1, r); %n-:mSus
else L&$ X\\Lv^
insertSort(data, mid + 1, r - mid); ~kUdHne(
W]kh?+SZ
for (i = l; i <= mid; i++) { G+N&(:
temp = data; R7: >'*F
} h|h-< G?>
for (j = 1; j <= r - mid; j++) { %?K1X^52d
temp[r - j + 1] = data[j + mid]; qdoJIP{
} iM;7V*u
int a = temp[l]; ?I{pv4G:
int b = temp[r]; ?;!d5Xuu
for (i = l, j = r, k = l; k <= r; k++) { BX :77?9,+
if (a < b) { aBk~/
data[k] = temp[i++]; o@TxDG
a = temp; H\7#$ HB
} else { &{${ Fq
data[k] = temp[j--]; LB}y,-vX>
b = temp[j]; MW|Qop[
} NZ:A?h2JR
} OYKeu(=L
} OZ\ ]6]L
|_V i8Ly
/** zlC|Sp af
* @param data AfmGA9
* @param l / sI0{
* @param i B0Ql1x#x
*/ 2_@vSwC
private void insertSort(int[] data, int start, int len) { !e?;f=1+E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8&FnXhZg4
} '`g#Zo
} t5dk}sRF
} MQc|j'vEY
} fpbb <Ro
'"C$E922
堆排序: xE(VyyR
Vy-N3L
package org.rut.util.algorithm.support; '^f,H1oW
?o'!(3`L
import org.rut.util.algorithm.SortUtil; n_5m+
1N
L'k)
/** D<9FSxl6
* @author treeroot q]F2bo
* @since 2006-2-2 T1TKwU8l
* @version 1.0 b X.S`
*/ a f[<[2pma
public class HeapSort implements SortUtil.Sort{ QI*Y7R~<
IV$pA`|V
/* (non-Javadoc) s)Bl1\Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K5-wuD1
*/ lA[BV7.=7
public void sort(int[] data) { M&P?/Zi=L
MaxHeap h=new MaxHeap(); 4$Oakl*l
h.init(data); ~\A(xmW}
for(int i=0;i h.remove(); uJ jm50R<
System.arraycopy(h.queue,1,data,0,data.length); h=6Zvf<x
} [<m1xr4"k
7{HJjH!zx
private static class MaxHeap{ >r+Dl\R
Q]WjW'Ry\
void init(int[] data){ g{K*EL<
this.queue=new int[data.length+1]; ceN*wkGyB
for(int i=0;i queue[++size]=data; emp*j@9
fixUp(size); a4HUP*
} H^ _[IkuA%
} }RX[J0Prq~
L&3Ak}sh
private int size=0; &Rw4ub3
ql,k 5.l
private int[] queue; !yAlb#yu
0ut/ ')[
public int get() { ;Awt: jF
return queue[1]; 5B3S]@%
} @[{9B6NlV
]`%}Q
public void remove() { 0#}Ed Q
SortUtil.swap(queue,1,size--); ^2-2Jz@
fixDown(1); x(J|6Ey7!n
} ;=goIsk{Q
file://fixdown nX(2&<
private void fixDown(int k) { [DS.@97n
int j; * SH5p
while ((j = k << 1) <= size) { Ua^#.K
if (j < size %26amp;%26amp; queue[j] j++; hl`4_`3y
if (queue[k]>queue[j]) file://不用交换 L{H`
t{A
break; qN h:;`
SortUtil.swap(queue,j,k); },9Hq~TA
k = j; Y r6wYs(%
} -#Xo^-&
} '0QrM,B9
private void fixUp(int k) { dg[&5D1Q
while (k > 1) { o'Q"
int j = k >> 1;
Q)eYJP=W
if (queue[j]>queue[k]) Rlc$2y@pU
break; ^NZq1c
SortUtil.swap(queue,j,k); K|Sh
k = j; /VFh3n>I2
} o^P/ -&T
} &'{6_-kh
/NvHM$5O%
} jWHv9XtW
sPMCN's
} ph*?y
F_>OpT
SortUtil: J3Ipk-'lx
64]_o/u5W4
package org.rut.util.algorithm; R42+^'af
*?sdWRbu}l
import org.rut.util.algorithm.support.BubbleSort; DC?U+
import org.rut.util.algorithm.support.HeapSort; u#9 H
import org.rut.util.algorithm.support.ImprovedMergeSort; tkT:5O6
import org.rut.util.algorithm.support.ImprovedQuickSort; zN2CI6
import org.rut.util.algorithm.support.InsertSort; ~qFuS933
import org.rut.util.algorithm.support.MergeSort; gaFOm9y.e
import org.rut.util.algorithm.support.QuickSort; ?N*m2rv
import org.rut.util.algorithm.support.SelectionSort; E=
3Ui
import org.rut.util.algorithm.support.ShellSort; -/ 5" Py
| Q0Wv8/
/** qffVF|7
* @author treeroot fmqHWu*wG
* @since 2006-2-2 CK4C:`YG
* @version 1.0 TmI~P+5w
*/ \F`%vZrKR
public class SortUtil { }HdibCAOf
public final static int INSERT = 1; QD6<sw@]P
public final static int BUBBLE = 2; ~z;G$jd
public final static int SELECTION = 3; Zb> UY8
public final static int SHELL = 4; )fPN6x/e
public final static int QUICK = 5; S\$=b_.
public final static int IMPROVED_QUICK = 6; x-0O3IIE
public final static int MERGE = 7; tf1iRXf8
public final static int IMPROVED_MERGE = 8; 4:1URhE
public final static int HEAP = 9; Mn`);[
D^]g`V*N
public static void sort(int[] data) { .|ZO2MCd
sort(data, IMPROVED_QUICK); 1 Hw %DJ
} [2h4%{R&
private static String[] name={ | ]#PF*
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IIj
:\?r
}; 2G=prS`s
ySkz5K+|g
private static Sort[] impl=new Sort[]{ GYp}V0
new InsertSort(), "d1~(0=6<m
new BubbleSort(), Cp!bsasj
new SelectionSort(), e`]x?t<U4/
new ShellSort(), k*xMe-
new QuickSort(), KK-}&N8
new ImprovedQuickSort(), VsIDd}~C%
new MergeSort(), Y52f8qQq
new ImprovedMergeSort(), {|!>
{
new HeapSort() },r9f MJ
}; _x+)Tv
;ZOu-B]q
public static String toString(int algorithm){ JU>F&g/|
return name[algorithm-1]; 'YFy6rds
} +!"GYPUXy
0oT~6BGm
public static void sort(int[] data, int algorithm) { a!?JVhD&
impl[algorithm-1].sort(data); 8.`*O
} },eV?eGj
t,D7X1W
public static interface Sort { f2*e&+LjTP
public void sort(int[] data); WdtZ{H
} Y6+/_$N4|
(FVHtZi7
public static void swap(int[] data, int i, int j) { H\r-
;,&
int temp = data; @$G{t^&os
data = data[j]; Ms>CO7Nvy
data[j] = temp; 3UR'*5|'
} -] @cUx
} q8m[ S4Q]g