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。 vi|Zit
插入排序: u>o<tw%Y
c,$mWTC
package org.rut.util.algorithm.support; Rcf=J){D6
RH~sbnZ)F
import org.rut.util.algorithm.SortUtil; VDa|U9N
/** OZT^\Ky_l
* @author treeroot m^A]+G#/
* @since 2006-2-2 pl\b-
* @version 1.0 xlw 2g<s
*/ F.0d4:A+
public class InsertSort implements SortUtil.Sort{ )&z4_l8`=
:k N5?t=
/* (non-Javadoc) Q!]IG;3Sx|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zX~}]?|9
*/ B1+ZFQo
public void sort(int[] data) { $T/#1w P
int temp; Mj'lASI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #>bT<
} 3agNB F2
} `p1DaV
} 9A+M|;O
e?=elN
} "Z~`e]>
0[9I0YBJ
冒泡排序: 5[<F_"x
|*E"G5WZM
package org.rut.util.algorithm.support; u<kD}
@G(xaU'u
import org.rut.util.algorithm.SortUtil; 1LyT7h
A6i
et~h[
/** zDd5cxFdZ
* @author treeroot N5KEa]k1nw
* @since 2006-2-2 AsAFUuI
* @version 1.0 OAVQ`ek
*/ Xl?YBZ}
public class BubbleSort implements SortUtil.Sort{ y1u9B;Fd
2Y;!$0_rv
/* (non-Javadoc) pUhc3L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h~fWE
*/ P\T| [%E'
public void sort(int[] data) { [ze/@29
int temp;
QP V@'.2m
for(int i=0;i for(int j=data.length-1;j>i;j--){ K%PxA#P}
if(data[j] SortUtil.swap(data,j,j-1); quRPg)
} avy=0Jmj
} $l#{_~
"m7
} &SrGh$:X
} 6WO7+M;z
6}STp_x
} Gql`>~
#]X2^ND47
选择排序: ?rQc<;b
.?Auh2nr
package org.rut.util.algorithm.support; 8H_l[/
'+6<U[ L
import org.rut.util.algorithm.SortUtil; J[6VBM.Y
(Z
8,e
/** [G=:?J,P
* @author treeroot {=6)SBjf
* @since 2006-2-2 *(p7NYf1
* @version 1.0 ke^d8Z.
*/ q-H&5K
public class SelectionSort implements SortUtil.Sort { yYk|YX(7U
Hh@2 m\HA
/* jOv~!7T
* (non-Javadoc) {!y<<u1
* LGfmUb-{]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N;g$)zCV1
*/ )6 k1 P
public void sort(int[] data) { CdNih8uG
int temp; *k4+ioFnKE
for (int i = 0; i < data.length; i++) { ZBC@xM&-
int lowIndex = i; <uC<GDO
for (int j = data.length - 1; j > i; j--) { N"K\ick6J
if (data[j] < data[lowIndex]) { &\c5!xQ9*
lowIndex = j; q#|r
} z
7@ 'CJ
} x*J|i4
SortUtil.swap(data,i,lowIndex); 4M7^
[G
} H<XlUCr_~+
} 4/f[`].#W
^H-QYuz:T0
} ,uO?;!t
)6g&v'dq
Shell排序: BPqwDjW
1MpX] j8C#
package org.rut.util.algorithm.support; 'cYQ?;
,;c{9H
import org.rut.util.algorithm.SortUtil; {)@ j77P
8| Sba<d
/** uZ-`fcCjD
* @author treeroot 7Y)s#FJ
* @since 2006-2-2 $=lJG(2%
* @version 1.0 D?%e"*>
*/ tfsh!)u?
public class ShellSort implements SortUtil.Sort{ uV!MW= )
VSx%8IM+X
/* (non-Javadoc) _m" ^lo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>\}}!
*/ +B](5 z4
public void sort(int[] data) { q;KshpfRMD
for(int i=data.length/2;i>2;i/=2){ /O+e#z2f<
for(int j=0;j insertSort(data,j,i); 'H|;%J6d>
} EmF]W+!z%
} n|J.)E.
insertSort(data,0,1); cj`#Tg.
} HK^a:BI
#DrZ`Aq
/** t&8<k+m
* @param data #wGQv
* @param j @ca#U-:g
* @param i H7y&N5.V
*/ Feh"!k <6k
private void insertSort(int[] data, int start, int inc) { q#.rYzl0
int temp; VyRW '
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kbD*=d}3{
} 3x,Aczb
} #/\pUK~km
} O7! fI'R
q#l.A?rK\
} >N :|Km\
$:xF)E
快速排序: xU#]w6
Ym3
"
package org.rut.util.algorithm.support; *7)S%r,?
h4J{j h.
import org.rut.util.algorithm.SortUtil; vcaBL<io
_G_ &Me0
/** 2O}s*C$Xav
* @author treeroot c_R)P,P
* @since 2006-2-2 41P4?"O
* @version 1.0 <"|<)BGeI
*/ t;f
p<z7N.
public class QuickSort implements SortUtil.Sort{ ~9/nx|%D
bHo?Rw!.
/* (non-Javadoc) #O974f8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A`U 2HC
*/ |u@>[*k'=
public void sort(int[] data) { 4.kkxQR7r
quickSort(data,0,data.length-1); N+@@EOmH
} ^~1@HcJo
private void quickSort(int[] data,int i,int j){ qA_DQ):
int pivotIndex=(i+j)/2; }lvP|6Y: y
file://swap _<~Vxz9
SortUtil.swap(data,pivotIndex,j); jw%FZ
&b]KMAo3
int k=partition(data,i-1,j,data[j]); 4hr+GO@o(
SortUtil.swap(data,k,j); x)sDf!d4bi
if((k-i)>1) quickSort(data,i,k-1); Nn4Kt,KY
if((j-k)>1) quickSort(data,k+1,j); I$qtfGr
3eDx@8N
}
} V@xnz)^t
/** XV9'[V
* @param data KNyD}1
* @param i Vm8_
!$F
* @param j xMGd'l?
* @return gwjv&.T6^
*/ "'dC>7* <
private int partition(int[] data, int l, int r,int pivot) { 0`Qs=R`OM
do{ ~,4Znuin
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]vyF&`phb
SortUtil.swap(data,l,r); rG%_O$_dO
} 2"K~:Tm#w
while(l SortUtil.swap(data,l,r); 2/gj@>dt
return l; (I 0t*Se
} g/Nj|:3
J[AgOUc
} FX 3[U+
tB7aHZ|
改进后的快速排序: o(qmI/h
56dl;Z)
package org.rut.util.algorithm.support; >6q@Tr
jnY4(B
import org.rut.util.algorithm.SortUtil; DK1)9<
>MH@FnUL
/** &aOOG8l
* @author treeroot ^g\%VIOD
* @since 2006-2-2 -:q7"s-}b
* @version 1.0 Y._AzJ&B[
*/ -9EbU7>!
public class ImprovedQuickSort implements SortUtil.Sort { c,^-nH'X>
?K"]XXsI
private static int MAX_STACK_SIZE=4096; @P?*<b{
private static int THRESHOLD=10; _6(=0::x
/* (non-Javadoc) #s%$kYp 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jt"Wtr
*/ Tj:F Qnx
public void sort(int[] data) { lki(_@3
int[] stack=new int[MAX_STACK_SIZE]; !Fi)-o
QPnc "!
int top=-1; |u[gI+TUE
int pivot; QB3AL;7
int pivotIndex,l,r; !=pemLvH
n$QFj'
stack[++top]=0; .jU9{;[
stack[++top]=data.length-1; b,wO^07-3^
l:+1j{ d7
while(top>0){ tH(Z9\L 7
int j=stack[top--]; Lfor0-j
int i=stack[top--]; 9 +6"<r!
N~Gh>{N
pivotIndex=(i+j)/2; $HRpG
pivot=data[pivotIndex]; X'Oo ogu
(@ Bw@9
SortUtil.swap(data,pivotIndex,j); @)}U\=
{|cA[#j#
file://partition XB?!V|bno
l=i-1; Z6I!4K
r=j; *T3"U|0_ y
do{ V+ Z22
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
J0`?g6aY
SortUtil.swap(data,l,r); ;iEqa"gO
} R9HRbVBJf
while(l SortUtil.swap(data,l,r); ~vgW:]i
SortUtil.swap(data,l,j); 4MUN1/DId`
B63puX{u#
if((l-i)>THRESHOLD){ UB^OMB-W.m
stack[++top]=i; z[|2od
stack[++top]=l-1; , Ox$W
} ;S0Kf{DN2
if((j-l)>THRESHOLD){ ?sD4S
stack[++top]=l+1; /x q^]0xy
stack[++top]=j; }ff+RGxLIG
} :<gC7UW
rel_Z..~
} Zo`_vx/{j
file://new InsertSort().sort(data); NK\0X5##.
insertSort(data); nvB<pSm
} fG zx;<0P!
/** ZiW&*nN?M
* @param data qh|fq
b
*/ % oJH 6F
private void insertSort(int[] data) { }_=h]|6t
int temp; tH=jaFJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m
yy*rt
} !K6:5V%q$
} 9zl-C*9vj
} "m>BE
cs9"0&JX
} M1=eS@
V%'' GF
归并排序: !Qq~lAJO;
s14D(:t(
package org.rut.util.algorithm.support; D@ %!|:
y[ZVi5) ,
import org.rut.util.algorithm.SortUtil; ?)g [Xc;K
4C[kj
/** dDA,Ps
* @author treeroot ;OC{B}.vH
* @since 2006-2-2 j-d542"
* @version 1.0 %GP`H/H(
*/ v}\Fbe
public class MergeSort implements SortUtil.Sort{ 9a#Y
D;-p
u"Mf xW`
/* (non-Javadoc) H2'djZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $9h^tP'CV
*/ oT|:gih5
public void sort(int[] data) { Wcbm,O4u
int[] temp=new int[data.length]; ]c1#_MW
mergeSort(data,temp,0,data.length-1); /IlO
} '|}H,I{
*x_e] /}
private void mergeSort(int[] data,int[] temp,int l,int r){ <sn,X0W
int mid=(l+r)/2; r`$P60,@C
if(l==r) return ; tkmzOc H
mergeSort(data,temp,l,mid); _q4Yq'dI
mergeSort(data,temp,mid+1,r); r)B55;*Fh
for(int i=l;i<=r;i++){ %XQJ!sC`
temp=data; IH`7ou {
} pd|l&xvka
int i1=l; Q9c*I,Oj
int i2=mid+1; ?4#
for(int cur=l;cur<=r;cur++){ nchpD@'t
if(i1==mid+1) Ce~Pms]
data[cur]=temp[i2++]; If8Lt}-
else if(i2>r) g][n1$%
data[cur]=temp[i1++]; a]J>2A@-I
else if(temp[i1] data[cur]=temp[i1++]; ol~ tfS
else zCv)%y
data[cur]=temp[i2++]; @vL0gzE?nB
} !^EA}N.u
} a5(9~.9
>}/T&S
} P`S'F_IN
^)o]hE|
改进后的归并排序: '$VP\Gj.
G
*<g%"
package org.rut.util.algorithm.support; \mZB*k)+
3NdO3-~)
import org.rut.util.algorithm.SortUtil; (=j/"Mb
dA<SVk*0Q
/** \9~Q+~@{G
* @author treeroot [x-
9m\h
* @since 2006-2-2 `)kxFD_bH
* @version 1.0 HG)$W
*/ ^5)=)xVF
public class ImprovedMergeSort implements SortUtil.Sort { / 8u}VYE
brK7|&R<
private static final int THRESHOLD = 10; t3*.Bm:^
wa!z:}]
/* ulk/I-y
* (non-Javadoc) y3bL\d1
* /XNC^!z6Js
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?kRx;S+
*/ n0t+xvNDF_
public void sort(int[] data) { N7GZ'-t^Er
int[] temp=new int[data.length]; 'j?H>'t{
mergeSort(data,temp,0,data.length-1); 4QYStDFe
} A<(Fn_&W
"*S_w N%
private void mergeSort(int[] data, int[] temp, int l, int r) { {DE4PE`
int i, j, k; uz:r'+v
int mid = (l + r) / 2; :*R+ee,&-
if (l == r) di]CYLf
return; I]cZcx,<q
if ((mid - l) >= THRESHOLD) ZTj!ti;5
mergeSort(data, temp, l, mid); L+mHeS l
else .Q{VY]B^
insertSort(data, l, mid - l + 1); F3 g$b,RMH
if ((r - mid) > THRESHOLD) F ^lau f
mergeSort(data, temp, mid + 1, r); .&Sjazk0XO
else P%d3fFzK
insertSort(data, mid + 1, r - mid); 8|u8J0^
#WE
lL2&
for (i = l; i <= mid; i++) { #%/Jr 52<
temp = data; Gs4t6+Al
} ) bd`U
for (j = 1; j <= r - mid; j++) { ;Y`8Ee4vH
temp[r - j + 1] = data[j + mid]; 2+K-I
} tiRi_
int a = temp[l]; 5kHU'D
int b = temp[r]; 	HV
for (i = l, j = r, k = l; k <= r; k++) { tItI^]w2s
if (a < b) { DweF8c
data[k] = temp[i++]; 76u\#{5
a = temp; x4`|[
} else { O7J V{'?
data[k] = temp[j--]; <2LUq@Pg
b = temp[j]; z)R\WFBW
} l{\k\Q !4
} R[#B|$
} +JB*1dz>8
BDX>J3h
/** Y+EwBg)co
* @param data &$h#9
* @param l }kJ9<h,
* @param i DT#Z6A
*/ u2Qs}FX
private void insertSort(int[] data, int start, int len) { 3S1`av(tD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |n.ydyu`
} 2N_9S?a3sK
} Px"K5c*
} x8*@<]!
} +PkN~m`
4$b9<:M_
堆排序: BGVy
\F<
c9;oB|8|
package org.rut.util.algorithm.support; lpeo^Y}N
JZrUl^8E
import org.rut.util.algorithm.SortUtil; 7S9Q{
;V3d"@R,
/** .[#bOp*
* @author treeroot We*c_;@<
* @since 2006-2-2 BXo9s~5Q
* @version 1.0 Yg14aKZl
*/ $Uxg$p qO
public class HeapSort implements SortUtil.Sort{ JSm3ZP|GqJ
B 9AE*
/* (non-Javadoc) pvJPMx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Vi&Y')f
*/ H@WQO]PA
public void sort(int[] data) { >jDx-H.N
MaxHeap h=new MaxHeap(); Yhd|1,m9f
h.init(data); T3
k#6N.
for(int i=0;i h.remove(); 0,`$ KbV\
System.arraycopy(h.queue,1,data,0,data.length); lb('=]3
}H
} k)R>5?_
&vp0zYd+v
private static class MaxHeap{ >zDnJb&"&
>h
m<$3
void init(int[] data){ 4';tMiz
this.queue=new int[data.length+1]; sIJ37;ZA
for(int i=0;i queue[++size]=data; g#ONtY@*U
fixUp(size); 6Pa
jBEF
} /aB9pD+%
} C&'Y@GE5
(8(z42
private int size=0; +>5
"fs$Y
[Pt5c6 L:
private int[] queue; 'HV}Tr
b#C"rTw
public int get() { ]X)EO49
return queue[1]; /vB%gqJvX
} 9bT,=b;
z
{J1pH_X
public void remove() { ^ffh
SortUtil.swap(queue,1,size--); FBPT@`~v
fixDown(1); &~Q ?k
} O"mU#3?
file://fixdown P
+ nT%
private void fixDown(int k) { "t"=9:_t
int j; @]HV:7<q
while ((j = k << 1) <= size) { |[TH
~o
if (j < size %26amp;%26amp; queue[j] j++; m-a_<xo
if (queue[k]>queue[j]) file://不用交换 D] 2+<;>`>
break; ^dP@QMly6
SortUtil.swap(queue,j,k); q6{ %vd
k = j; +Z[%+x92
} b,G+=&6u
} s/Wg^(&M
private void fixUp(int k) { k>n^QHM
while (k > 1) { 3<msiCP
int j = k >> 1; Pwz^{*u]
if (queue[j]>queue[k]) cuquA ~
break; (s{%XB:K
SortUtil.swap(queue,j,k); cVn7jxf
k = j; sa+:c{
} ( L RX
} $YaL3n
c e=6EYl
} b)w3
G%Xx
&TWO/F+Y
} 7!JoP?!
:eQxdi'
SortUtil: Ed*`d>
JEBo!9
package org.rut.util.algorithm; _I|wp<R
3[aJ=5
import org.rut.util.algorithm.support.BubbleSort; 7X}_yMxc
import org.rut.util.algorithm.support.HeapSort; 0#*\o1r\p
import org.rut.util.algorithm.support.ImprovedMergeSort; +bf%]
import org.rut.util.algorithm.support.ImprovedQuickSort; a9jY^E'|n
import org.rut.util.algorithm.support.InsertSort; ,%nmCetD@
import org.rut.util.algorithm.support.MergeSort; bJB:]vs$
import org.rut.util.algorithm.support.QuickSort; 9R;s;2$.
import org.rut.util.algorithm.support.SelectionSort; ~T4=Id
import org.rut.util.algorithm.support.ShellSort; 4
<]QMA0
&|E2L1
/** "l +Jx|h\
* @author treeroot p-KuCobz]
* @since 2006-2-2 ,}FYY66K
* @version 1.0 qs-:JmA_w
*/ i,yK&*>JJ
public class SortUtil { ir,Zc\C
public final static int INSERT = 1; s.GhquFCrU
public final static int BUBBLE = 2; 6gR=e+
public final static int SELECTION = 3; eEc;w#
public final static int SHELL = 4; @MB;Ez
v
public final static int QUICK = 5; 3UN Jj&-`
public final static int IMPROVED_QUICK = 6; A<.Q&4jb
public final static int MERGE = 7; B|GJboQ
public final static int IMPROVED_MERGE = 8; BxZop.zwE(
public final static int HEAP = 9; q75F^AvH
<&L;9fr
public static void sort(int[] data) { J0=`n(48B
sort(data, IMPROVED_QUICK); )uX:f8
} M2zfN ru
private static String[] name={ C,IN+@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T:!sfhrZ~<
}; IYCKF/2o
VhW;=y>}
private static Sort[] impl=new Sort[]{ ;!~;05^iD
new InsertSort(), ~AE034_N
new BubbleSort(), ToMX7xz6
new SelectionSort(), q/B+F%QiMQ
new ShellSort(), &J~S $
new QuickSort(), 5r+0^UAO:J
new ImprovedQuickSort(), FQ-(#[
new MergeSort(), y2qESAZ%k}
new ImprovedMergeSort(), q;>BltU
new HeapSort() Zgg 7pL)#c
}; zEhy0LLm
- 5k4vx
N}
public static String toString(int algorithm){ yav)mO~QU6
return name[algorithm-1]; 9=kTTF s
} &iGl)dDr
c\]L
public static void sort(int[] data, int algorithm) { U1"t|KW8
impl[algorithm-1].sort(data); ~lF lv+,%
} 4vX]c
ZK
?x_`w
public static interface Sort { ~NcJLU!au
public void sort(int[] data); oOL3O@)w>
} SQ
Fey~
2s4=%l
public static void swap(int[] data, int i, int j) { K?;p:
int temp = data; ;OPCBd r
data = data[j]; 6m.Ku13;
data[j] = temp; w7Pe<vT
} y="SzPl
} 8x9kF]=