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。 fUCjC*#1
插入排序: "doiD=b
IYtiX
package org.rut.util.algorithm.support; [\eVX`it
mA.,.<xE@
import org.rut.util.algorithm.SortUtil; 6~jAh@-
/** 1_!?wMo:f
* @author treeroot #Vmf
6
* @since 2006-2-2 V'RbTFb9Z
* @version 1.0 \K"7U
*/ ZDL1H3;R
public class InsertSort implements SortUtil.Sort{ +w.$"dF!
qs\Cwn!
/* (non-Javadoc) y]PuY\+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | @ ut/
*/ [aA@V0l
public void sort(int[] data) { ?[.8A/:5
int temp; Y+),c14#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C+M]"{Y+
} zx$1.IM"4
} K/Pw;{}
} \6MM7x(U3
&uc`w{,Zs
}
dG0z A
D
k18v{)i~
冒泡排序: JF~9efWe>
6jBi?>[I
package org.rut.util.algorithm.support; o
o'7
|/xx**?
import org.rut.util.algorithm.SortUtil; ZI1]B944ni
e-v|
/** #Ff8_xhP 2
* @author treeroot }wp/,\_
>
* @since 2006-2-2 }ssja,;
* @version 1.0 ;a>u7rw
*/ &b^~0Z
public class BubbleSort implements SortUtil.Sort{ l"+8>Mm
QnP3U
/* (non-Javadoc) g-UCvY
I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KiI+ V;o
*/
7FY2a
public void sort(int[] data) { R ai
04
int temp; +C~d;p
for(int i=0;i for(int j=data.length-1;j>i;j--){ (p12=EB<
if(data[j] SortUtil.swap(data,j,j-1); G{4s~Pco[Q
} ilK*Xo
} FP=27=
} +'5I8FE-
} Q~0>GOq*
ff R%@
} 6@8t>"}
O<V 4j,
选择排序: %1jcY0zEQ
pZ\7!rON
package org.rut.util.algorithm.support; ~ffT}q7^
R)*DkL!
import org.rut.util.algorithm.SortUtil; -L]-u6kC[
1|"BpX~D
/** OqciZ@#5n
* @author treeroot x>##qYT
* @since 2006-2-2 _ {wP:dI "
* @version 1.0 )kI**mI}
*/ 3TCRCz
public class SelectionSort implements SortUtil.Sort { Ic_NQ<8
>l AtfN='
/* w$9LcN
* (non-Javadoc) of_y<dd[G
* KgkRs?'z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N2'aC}
I
*/ %>=6v}f,+
public void sort(int[] data) { YK6'/2!
int temp; $qYP|W
for (int i = 0; i < data.length; i++) { M$Z2"F;
int lowIndex = i; B1!xr-kC
for (int j = data.length - 1; j > i; j--) { >O24#!9XW
if (data[j] < data[lowIndex]) { 0'Ho'wDb
lowIndex = j; P$k*!j_W
} J+E,Ui ZU
} }]mxKz
SortUtil.swap(data,i,lowIndex); Kd^.>T-
} yCN_vrH>
} [H<TcT8
/QyKXg6)l
} G'G8`1Nj
/<8y>
Shell排序: X)~wB7_0G
4RtAwB
package org.rut.util.algorithm.support; 7LrmI~P
/qIl)+M
import org.rut.util.algorithm.SortUtil; rq8 d}wj
lcm[l
/** Z#H<+S(
* @author treeroot =s4(Y
* @since 2006-2-2 Lm2!<<<
* @version 1.0 A|+QUPD
*/ /IRXk[
public class ShellSort implements SortUtil.Sort{ KB](W
_,T
4DS6
/* (non-Javadoc) 7LVG0A2>7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <OGG(dI
*/ If,p!L
public void sort(int[] data) { I@9'd$YY
for(int i=data.length/2;i>2;i/=2){ A/'po_'uy
for(int j=0;j insertSort(data,j,i); J>}J~[ap\J
} oXnaL)Rk
} eyyME c!
insertSort(data,0,1); '{jr9Vh
} 6ABK)m-y
:+PE1=v
/** ={ms@/e/T
* @param data {JP q.A
* @param j %?PFe}
* @param i /v+)#[]>
*/
6j<!W+~G
private void insertSort(int[] data, int start, int inc) { qtZ?
kJ
int temp; PT6]qS'1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1Q>nS[
} |sReHt2)d
} ;cI*"-I:F
} \4>,L_O
DHWz, M
} /!?LBtqy
ZKrLp8l\
快速排序: -U=Ci
@9B*V~ <
package org.rut.util.algorithm.support; \CMZ_%~wU
A<X?1$
import org.rut.util.algorithm.SortUtil; )?$[iu7 s
D:_W;b)
/** c[,h|~K/_?
* @author treeroot $QC1l@[sM
* @since 2006-2-2 ;Y^'$I2fR#
* @version 1.0 Zj_2>A
*/ O1z]d3x
public class QuickSort implements SortUtil.Sort{ 'f-r 6'_ZX
06S
R74
/* (non-Javadoc) ~Ba=nn8Cq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W}CM;~*L
*/ uX6yhaOp|
public void sort(int[] data) { x)~i`$
quickSort(data,0,data.length-1); {p84fR1P
} tR|dnC4U
private void quickSort(int[] data,int i,int j){ a]T:wUYG'
int pivotIndex=(i+j)/2; lhGJ/By- -
file://swap Kgu8E:nL
SortUtil.swap(data,pivotIndex,j); I x%>aee
kUf i
int k=partition(data,i-1,j,data[j]); (aa2uctTn
SortUtil.swap(data,k,j); {rUg,y{v
if((k-i)>1) quickSort(data,i,k-1); eluN~T:W
if((j-k)>1) quickSort(data,k+1,j); @&ZQDi
"=djo+y
} 5G f@n/M"
/** T+<.KvO-
* @param data -!j6&
* @param i q<dG}aj
* @param j x=oV!x
* @return 0ra'H/>Ly
*/ gw]%:
WeH
private int partition(int[] data, int l, int r,int pivot) { N,Eap KG
do{ mn/)_1',
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +i&<`ov
SortUtil.swap(data,l,r); Q 7_5
} 3f[Yk#"
while(l SortUtil.swap(data,l,r); 6c-/D.M
return l; aOwjYl[?p
} \Oeo"|
B.q/}\
?(
} Ktq 4b%{
5 #K*75>
改进后的快速排序: M^o_='\bE
SiLW[JXd
package org.rut.util.algorithm.support; DiFYVR<@
}KI/fh
import org.rut.util.algorithm.SortUtil; %F;BL8d
^+_rv
/** |C[!A
* @author treeroot dHc\M|HCC
* @since 2006-2-2 +OE!Uqnt
* @version 1.0 94"+l@K
*/ .AfZ5s]/F
public class ImprovedQuickSort implements SortUtil.Sort { cFUD$mp
&lQ%;)'
private static int MAX_STACK_SIZE=4096; 'ToE Y3
private static int THRESHOLD=10; y [8;mCh
/* (non-Javadoc) @+gr/Pul^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J}#gTG( '
*/ ?=? _32O
public void sort(int[] data) { $DL}jH^S
int[] stack=new int[MAX_STACK_SIZE]; q[&Kr+)j
_K^Q]V[nZ
int top=-1; qoO`)<
int pivot; 4&}%GH>}
int pivotIndex,l,r; u 272)@R
Bf utmI
stack[++top]=0; oac)na:O#
stack[++top]=data.length-1; *F\wWg'!B
n
i#jAwkN5
while(top>0){ 6"Uu;Q
int j=stack[top--]; 0q}i5%m7
int i=stack[top--]; S,m(
XO+BZB`F
pivotIndex=(i+j)/2; mUBy*.
pivot=data[pivotIndex]; 2q~.,vpP
\SWTP1
SortUtil.swap(data,pivotIndex,j); *uc/| c
IO\l8G
file://partition ,md_eGF
l=i-1; fiGTI}=P
r=j; UA>=#
$
do{ u]yy%@U1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "q=Cye
SortUtil.swap(data,l,r);
(dy(.4W\
} Q{[@n
while(l SortUtil.swap(data,l,r); wQhNQ(H~\
SortUtil.swap(data,l,j); Cj-s
7Ak<e tHD
if((l-i)>THRESHOLD){ 3s6obw$ki
stack[++top]=i; \ruQx)5M
stack[++top]=l-1;
Aa
~W,
} (95|DCL
if((j-l)>THRESHOLD){ #T=iS(i
stack[++top]=l+1; Tagf7tw4
stack[++top]=j; 'C]w3Rh'
} xl&@g)Jj
586P~C[ic
} >8f~2dH2%
file://new InsertSort().sort(data); Ku(YTXtK
insertSort(data); 1d5%(:@
} jA@
uV,w
/** ]We0 RD"+
* @param data t
~]'
{[F
*/ $Y$s*h_-/<
private void insertSort(int[] data) { nJgN2Z
int temp; !oRN,m[7)p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pr1OQbg]8
} {R7RBX
} M_?B*QZJI
} pxbuZ9w2Q
I8W9Kzf
} #RdcSrw)W!
hOqNZ66{
归并排序: -e51/lhpd
Q[!?SSX%
package org.rut.util.algorithm.support; v!S(T];)
ykx13|iR
import org.rut.util.algorithm.SortUtil; KLj/,ehD
!
I_Gm2Dd
/** INCanE`+
* @author treeroot !t)uRJ
* @since 2006-2-2 {)Zz4
* @version 1.0 iF:NDqc
*/ +5GC?cW
public class MergeSort implements SortUtil.Sort{ +Z9ua%,3%
4dz Ym+vJm
/* (non-Javadoc) (:+Wc^0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}eq~3
*/ M.$=tuUL
public void sort(int[] data) { 925T#%y
int[] temp=new int[data.length]; s}^W2
mergeSort(data,temp,0,data.length-1); |c$*Fa"A
} #5{lOeN
Q\^BOdX^`
private void mergeSort(int[] data,int[] temp,int l,int r){ 4/x.qoj
int mid=(l+r)/2; wqE2n
if(l==r) return ; 2fm6G).m
mergeSort(data,temp,l,mid); ZTGsZ}{5
mergeSort(data,temp,mid+1,r); @71y:)W<
for(int i=l;i<=r;i++){ >
JTf0/
temp=data; dDYor-g>
} : T4ap_Ycq
int i1=l; p8CaD4bE
int i2=mid+1; 3=Xvl 58k
for(int cur=l;cur<=r;cur++){ I=E\=UTG,5
if(i1==mid+1) ;$r!eFY;
data[cur]=temp[i2++]; Nw1 .x
else if(i2>r) U|+`Eth8(
data[cur]=temp[i1++]; ccW{88II7w
else if(temp[i1] data[cur]=temp[i1++]; li`
else p2GN93,u@P
data[cur]=temp[i2++]; q~\[P4m
} #KL W&A
} qm=9!jqC;
)qWO}]F
} xLbF9ASim
CS xB)-
改进后的归并排序: MA mjoH
1ww~!R
package org.rut.util.algorithm.support; XQ Si
X=k|SayE8
import org.rut.util.algorithm.SortUtil; *;
6LX
[}l
1`>
/** 8L))@SA+uJ
* @author treeroot .6i +_B|
* @since 2006-2-2 NCx)zJ\S
* @version 1.0 ^X*l&R_=R
*/ )B^T7{
public class ImprovedMergeSort implements SortUtil.Sort { K!G/iz9SB
Kku@!lv
private static final int THRESHOLD = 10; wD<W'K
f./j%R@
/* cn
;2&
* (non-Javadoc) ;sSRv9Xb
* *^%ohCUi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %G] W Oq=q
*/ `]2y=f<{X
public void sort(int[] data) { <
$rXQ
int[] temp=new int[data.length]; J\ ?
mergeSort(data,temp,0,data.length-1); LC/%AbM
} q[.,i{2R}
*_uGzGB&G
private void mergeSort(int[] data, int[] temp, int l, int r) { `$VnB
int i, j, k; qS[nf>"
int mid = (l + r) / 2; ,5|@vW2@u
if (l == r) 8rjiW#
return; |=Pw-uk
if ((mid - l) >= THRESHOLD) Xu[A,6
mergeSort(data, temp, l, mid); o l+*Oe
else Oyjhc<6
insertSort(data, l, mid - l + 1); .ffb*gZ4
if ((r - mid) > THRESHOLD) W%}zwQ
mergeSort(data, temp, mid + 1, r); YR~)07
else sTYA
insertSort(data, mid + 1, r - mid); <(o) * Zmo
z`y^o*qc]
for (i = l; i <= mid; i++) { yLvU@V@~
temp = data; /3 ;t
&]
} #$-`+P
for (j = 1; j <= r - mid; j++) { H[iR8<rhQ
temp[r - j + 1] = data[j + mid]; KQrG|<J
} !*-|s}e
int a = temp[l]; Jpo(O>\P
int b = temp[r]; NFb<fD[C
for (i = l, j = r, k = l; k <= r; k++) { %t,Fxj4F
if (a < b) { AhSN'gWpbF
data[k] = temp[i++]; Dn.%+im-u
a = temp; Y X{F$BM
} else { =&?BPhJE
data[k] = temp[j--]; zO)3MC7l*
b = temp[j]; )L7h:%h#
} h!]=)7x;
} i}LVBx"K(
} $%3%&+z$I
\w@ "`!%
/** (,
uW-
* @param data >o!~T}J7
* @param l J?bx<$C@
* @param i CF@j]I@{
*/ 8}!WJ2[R
private void insertSort(int[] data, int start, int len) { 'di(5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Eg#WR&Uq"
} hW-?j&yJ?
} e:RgCDWL
} XRWy#Pj
} agPTY{;
!&vPG>V
堆排序: (%iCP/E3
Wr\A ->+
package org.rut.util.algorithm.support;
i(n BXV{
&\M<>>IB
import org.rut.util.algorithm.SortUtil; Zm/I &
Gmh6|Dsg
/** 2lRE+_qz
* @author treeroot 7,Q>>%/0P
* @since 2006-2-2 =$Sd2UD
* @version 1.0 Q)\4 .d
*/ p6W|4_a?
public class HeapSort implements SortUtil.Sort{ `-82u :"
J0x)NnWJ
/* (non-Javadoc) Meo.
V|1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /~;om\7r
*/ pK@8= +
public void sort(int[] data) {
i}r|Zo
MaxHeap h=new MaxHeap(); ORo,.#<
h.init(data); (<xl _L:*.
for(int i=0;i h.remove(); xr1,D5
System.arraycopy(h.queue,1,data,0,data.length); TKZ[H$Z
} 8iUj9r_
'P3jUc)
private static class MaxHeap{ z[0B"f
[$%O-_x
void init(int[] data){ ,ftKRq
this.queue=new int[data.length+1]; C{U"Nsu+1
for(int i=0;i queue[++size]=data; 'o]8UD(
fixUp(size); zP|^) h5
} Y4I;-&d's
} 58o'Q
qjmlwVw
private int size=0; tkKiuh?m
xy[aZr
private int[] queue; K+@R [
Q6rvTV'vv
public int get() { Ni-@El99
return queue[1]; wOs t).
} I7e.pm
D
$3Mg
public void remove() { 6$A>%Jtwe
SortUtil.swap(queue,1,size--); "TP^:Ln
fixDown(1); GEUC<bL+
} S<UWv@`U"
file://fixdown Z2D^]
private void fixDown(int k) { @PAT|6
int j; 2*ByVK
while ((j = k << 1) <= size) { ;HoBLxb P
if (j < size %26amp;%26amp; queue[j] j++; .l$:0a
if (queue[k]>queue[j]) file://不用交换 h0)Dj(C
break; k}FmdaPI'
SortUtil.swap(queue,j,k); I::|d,bR!
k = j; ]YWz;Z
} JBt2R=
} H[D<G9:
private void fixUp(int k) { cZlDdr%
while (k > 1) { aGq1YOD[$
int j = k >> 1; q1?}G5a?
if (queue[j]>queue[k]) :B
9>
break; p;n"zr8U
SortUtil.swap(queue,j,k); 2v?fbrC5c
k = j;
{Bw
} (rm*KD"]
} M2lvD&
FE,BvNBZ
} ! N'HL-oT
Z|$M 9E
} x
?24oO
1U6z2i+y
SortUtil: _kXq0~
K$/&C:,Q
package org.rut.util.algorithm; &$g{i:)Z
;7E
c'nC4
import org.rut.util.algorithm.support.BubbleSort; 2xK v;
import org.rut.util.algorithm.support.HeapSort; V;29ieE!
import org.rut.util.algorithm.support.ImprovedMergeSort; 3>QkO.b
import org.rut.util.algorithm.support.ImprovedQuickSort; @A'@%Zv-
import org.rut.util.algorithm.support.InsertSort; 'M!M$<j
import org.rut.util.algorithm.support.MergeSort; Lz{z~xNHW.
import org.rut.util.algorithm.support.QuickSort; aI;-NnC
import org.rut.util.algorithm.support.SelectionSort; ^xm%~
import org.rut.util.algorithm.support.ShellSort; Mqv[7.|
h0a|R4J
/** D0^h;wJ=4+
* @author treeroot /odDJxJ
k
* @since 2006-2-2 *WaqNMD[%
* @version 1.0 N> xdX5
*/ j9xu21'!%
public class SortUtil { )k.}>0K |
public final static int INSERT = 1; zd|n!3;
public final static int BUBBLE = 2; 5y8VA4L/o
public final static int SELECTION = 3; c*.-mS~Z`
public final static int SHELL = 4; @L$!hTaP
public final static int QUICK = 5; dVe,;?+A
public final static int IMPROVED_QUICK = 6; Q>(a JF
public final static int MERGE = 7; QtQbr*q@%
public final static int IMPROVED_MERGE = 8; =}zSj64
public final static int HEAP = 9; 5Ky(C6E$s
* o{7 a$V
public static void sort(int[] data) { /]oQqZHv
sort(data, IMPROVED_QUICK); e2^TQv2(=e
} % 'OY
private static String[] name={ _Wqy,L;J
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;2 P
}; KX
J7\}
2F
:8=_sA
private static Sort[] impl=new Sort[]{ gCq'#G\Z
new InsertSort(), T>68 ,; p
new BubbleSort(), ^!fY~(=U4
new SelectionSort(), 6=:s3I^
new ShellSort(), @;\0cEn>
new QuickSort(), Q_>W!)p Gz
new ImprovedQuickSort(), R,ZG?/#uM9
new MergeSort(), k(he<-GF\
new ImprovedMergeSort(), jn(%v]
new HeapSort() F1meftK
}; N "}N>xe2
J6Vx7
public static String toString(int algorithm){ s'|t2`K("
return name[algorithm-1]; !<24Cy
} $*|M+ofQ
cj9C6Y!
public static void sort(int[] data, int algorithm) { 2Qt!JXC
impl[algorithm-1].sort(data); ~7anj.
} >x>/}`
9dmoB_G
public static interface Sort { 1YK(oRSDn
public void sort(int[] data); [5!dO\-[
} J$5Vjh'aM
=f!clhO
public static void swap(int[] data, int i, int j) { YjH~8= =
int temp = data; >,[@SF%
data = data[j]; q=}1ud}1
data[j] = temp; DD2K>1A1
} TJ1h[
} Wy%FF\D.Y