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。 Z'PE^ ,
插入排序: }'dnL
wh:O"&qk
package org.rut.util.algorithm.support; %b2.JGBqJ
SI3ek9|XU
import org.rut.util.algorithm.SortUtil; 4`G":nE?We
/** h[%`'(
* @author treeroot 1sZwW P
* @since 2006-2-2 P@:#NU[
* @version 1.0 +I#5?
*/ gM20n^
public class InsertSort implements SortUtil.Sort{ 2 As 4}
W|3XD-v@
/* (non-Javadoc) J4h7]
qt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `,4"[6S
*/ .
zvF!!z
public void sort(int[] data) { HH3WZ^0>
int temp; !}^c.<38Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B&#TbKp
} SC`.VCfc.
} !SIGzj
} _r5Q%8J
59O;`y0
} GwV2`2
l}%!&V0
冒泡排序: ?@l9T)fF
EXg\a#4['
package org.rut.util.algorithm.support; s,N%sO;
to^ &:
import org.rut.util.algorithm.SortUtil; 3@?#4]D{'
Ob?>zsx
/** "[(_C&Ot4
* @author treeroot )h,+>U@
* @since 2006-2-2 `!DrB08A
* @version 1.0 9j:t}HV
*/ N
VzR 2
public class BubbleSort implements SortUtil.Sort{ e~c;wP~cO
?7^H1L
/* (non-Javadoc) Q2PY(
#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8HdmG{7.
*/ Ooz+V;#Q
public void sort(int[] data) { }8p;w T!
int temp; BD[XP`[{
for(int i=0;i for(int j=data.length-1;j>i;j--){ (1fE^KF@f
if(data[j] SortUtil.swap(data,j,j-1); 4hg]/X"H#
} (1%u`#5n-N
} 5[esW
} !zwnFdp
} m;lwMrY\7>
U;:>vi3p
} 07Yh
{QTfD~z^K
选择排序: 'O8"M
-]R7[5C:
package org.rut.util.algorithm.support; RS#)uC5/%
C
7YZ;{t
import org.rut.util.algorithm.SortUtil; b4!(~"b.
q/Ba#?sen
/** ||cG/I&,
* @author treeroot P*T'R
* @since 2006-2-2 .t4IR
=Z
* @version 1.0 z)=D&\HX
*/ /OK.n3Tt
public class SelectionSort implements SortUtil.Sort { \CM(
(ta!4h,
/* bqN({p&
* (non-Javadoc) xIf,1g@Cq9
* 7 w_`<b6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z_D8}$!
*/ ~K 8eRT
public void sort(int[] data) { xvQJTRk
int temp; 3_B .W
for (int i = 0; i < data.length; i++) { n`? j.
s
int lowIndex = i; )?joF)
for (int j = data.length - 1; j > i; j--) { l.\Fr+*ej
if (data[j] < data[lowIndex]) { p@/!+$^{
lowIndex = j; wy<m&M<Gr
}
pMYEL
} Fd2Eq&:en$
SortUtil.swap(data,i,lowIndex); w#U3h]>,
} /_l%Dm?
} :Sk0?WU
rJ]iJ0[I
} bdk"7N
vUR{!`14
Shell排序: ^q_0(Vf
5Az=)q4Q
package org.rut.util.algorithm.support; <33[qt~
^E8&!s
import org.rut.util.algorithm.SortUtil; k/=J<?h0
.%<oy"_
/** 49^;T;'v
* @author treeroot #+|{l*>
* @since 2006-2-2 !>Db
* @version 1.0 G$}\~dD
*/ DGj:qd(
public class ShellSort implements SortUtil.Sort{ n'v[[bmu
fySzZ
/* (non-Javadoc) hf^,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y[i>
*/ m,,-rC
public void sort(int[] data) { |3/=dG
for(int i=data.length/2;i>2;i/=2){ z 3fS+x:E{
for(int j=0;j insertSort(data,j,i); .slA}
} c<wsWs 4V
} r#JE7uneT
insertSort(data,0,1); )9 5&-Hs
} nZ>qM]">u
8]]uk=P
/** "n,">
* @param data RZ:Yu
* @param j WW\u}z.QJ
* @param i C$SuFL(pb
*/ g2JNa?z
private void insertSort(int[] data, int start, int inc) { [U]U *x
int temp; v{$X2z_$w
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /qed_w.p
} 57* z0<
} #Gx%PQ`
} wUW^
O
rS\j9@=Y4
} fPZt*A__
$[T^S
快速排序: ' 7+x,TszI
" JFx
package org.rut.util.algorithm.support; %/"I.\%d
9cp-Rw<tI
import org.rut.util.algorithm.SortUtil; Urj8v2k
Xt^ldW
/** %%)"W
n#`
* @author treeroot >0DQ<@ot:
* @since 2006-2-2 zUXQl{
* @version 1.0 I'HPy.PV
*/ Zy|B~.@<j
public class QuickSort implements SortUtil.Sort{ So{/V%
N9tH0
/* (non-Javadoc) juG?kL.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }pdn-#
*/ H<#M)8
public void sort(int[] data) { #( F/P!qk
quickSort(data,0,data.length-1); JS<S?j?*/
} <qT[
private void quickSort(int[] data,int i,int j){ dIg/g~ t"
int pivotIndex=(i+j)/2; m_zl*s*6
file://swap >!848J
SortUtil.swap(data,pivotIndex,j); rn $a)^!
7DDd1"jE
int k=partition(data,i-1,j,data[j]); ?;zu>4f|
SortUtil.swap(data,k,j); a\>+!Vq
if((k-i)>1) quickSort(data,i,k-1); GPz0qK
if((j-k)>1) quickSort(data,k+1,j); _v bCC7Bf8
kd)Q$RA(
} >lQ@" U
/** Ok2KTsVl
* @param data 5.5<.")
* @param i ]$Pl[Vegy
* @param j x? tC2L
* @return ^ gMoW
*/ #%O|P&rA
private int partition(int[] data, int l, int r,int pivot) { z/!LC;(
do{ Z<L}ur
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7/+I"~
SortUtil.swap(data,l,r); ;$,=VB:'
} cWjb149@)
while(l SortUtil.swap(data,l,r); p.6C.2q~s]
return l; ?!^ow5"8
} n75)%-
u^|c_5J(
} $9+|_[ ]v.
FlGU1%]m
改进后的快速排序: J!Er%QUR
:dq.@:+<R
package org.rut.util.algorithm.support; *o.f<OwOz
SQ8xfD*
import org.rut.util.algorithm.SortUtil; \ne1Xu:hM
d-c<dS+R
/** /N= }wC
* @author treeroot /Cy4]1dw
* @since 2006-2-2 mSLA4[4{
* @version 1.0 7]W6\Z
*/ (rqc_ZU5
public class ImprovedQuickSort implements SortUtil.Sort { %]7'2
`ppyCUX
private static int MAX_STACK_SIZE=4096; x1H1[0w,i
private static int THRESHOLD=10; Q2yD4>qy
/* (non-Javadoc) eyW8?:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }py)EI,U
*/ B-^r0/y;
public void sort(int[] data) { 2[~|#0x
int[] stack=new int[MAX_STACK_SIZE]; W*S}^6ZT`
"| Oj!&0
int top=-1; @<kY,ox@~
int pivot; LNp{lC
int pivotIndex,l,r; g)$/'RB
A,67)li3
stack[++top]=0; -Zq\x'
stack[++top]=data.length-1; 6_|iXs(&
z^lcc7
while(top>0){ `#HtVI
int j=stack[top--]; +t*V7nW
int i=stack[top--]; f~Y;ZvB
4`yE'%6.}
pivotIndex=(i+j)/2; ezimQ
pivot=data[pivotIndex]; {uUV(FzF6
r1<dZtb
SortUtil.swap(data,pivotIndex,j); M[ {O%!
YI+ clh;%9
file://partition F>Pr`T?>
l=i-1; -t]3 gCLb
r=j; lXtsnQOOK
do{ riR(CJ}Ff
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LMKhtOZ?
SortUtil.swap(data,l,r); 5aj%<r
} I3gl+)Q
while(l SortUtil.swap(data,l,r); hL4T7`
SortUtil.swap(data,l,j); srPczVG*
U!d|5W.{Q
if((l-i)>THRESHOLD){ o|:c{pwq
stack[++top]=i; n%|og^\0
stack[++top]=l-1; PRJ
} %k%%3L,
if((j-l)>THRESHOLD){ umT *
stack[++top]=l+1; WwsH7X)
stack[++top]=j; >|X )
} )]}G8A
D:] QBA)C
} wE[gp+X~
file://new InsertSort().sort(data); yPrF2@#XZ/
insertSort(data); Sq&r
;
} ?f}?I`S,
/** J':X$>E|
* @param data r[?GO"ej5
*/ K;z$~;F
private void insertSort(int[] data) { _(zZrUHB
int temp; Ez8k.]q u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *+OS;R1<
} |`ya+/ff+
} =yF]#>Ah
} :V3z`}Rl
{Qi J-[q
} :)Pj()Os|
zu3Fi= |0
归并排序: H )51J:4
(>
W\Nf
package org.rut.util.algorithm.support; l~]D|92
'-U&S
import org.rut.util.algorithm.SortUtil; ]p8zT|bv
*
N]^(+/A
/** SZ29B
* @author treeroot r<$o [,W
* @since 2006-2-2 4#CHX^De
* @version 1.0 "(r%`.l=I
*/ y2W|,=Vd
public class MergeSort implements SortUtil.Sort{ VwudNjL
fB80&G9
/* (non-Javadoc) 6ao~f?JZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5U-SIG*
*/ ]A;.}1'
public void sort(int[] data) { W#)X@TlE
int[] temp=new int[data.length]; F r!FV4
mergeSort(data,temp,0,data.length-1); -MRX@ a^1
} @Jx1n Q^
IRGcE&m
private void mergeSort(int[] data,int[] temp,int l,int r){ 5cGQ `l
int mid=(l+r)/2; FnKC|X
if(l==r) return ; Fw\g\
mergeSort(data,temp,l,mid); t"zi'9$t
mergeSort(data,temp,mid+1,r); 4O{G^;
for(int i=l;i<=r;i++){ !&xci})7a
temp=data; 78 w
} U9ZuD40\
int i1=l; EugRC
int i2=mid+1; tr5j<O
for(int cur=l;cur<=r;cur++){ SRtw
if(i1==mid+1) k".kbwcaF
data[cur]=temp[i2++]; uNkJe
else if(i2>r) lJ]]FuA-Q
data[cur]=temp[i1++]; zYrJHn#vB
else if(temp[i1] data[cur]=temp[i1++]; qA;Gl"HF
else uu9IUqEq2
data[cur]=temp[i2++]; (\D E1q
} =A!rZG
} ta6>St7.
Gx
%=&O
} (dZ]j){
RL:B.Lv/W
改进后的归并排序: O6/:J#X%
$ay!'MK0d
package org.rut.util.algorithm.support; oYdE s&qq
43x2BW&&
import org.rut.util.algorithm.SortUtil; Lb)rloca
6DU~6c=)
/** _p>F43%p
* @author treeroot ,-hbwd~M
* @since 2006-2-2 &r.M~k
>
* @version 1.0
99.F'Gz
*/ Vpne-PW
public class ImprovedMergeSort implements SortUtil.Sort { w
>2sr^!y
8\"Gs z
private static final int THRESHOLD = 10; obE8iG@H
}zks@7kf
/* @R}3f6@67
* (non-Javadoc) |_+#&x
* <#J5.I 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OLPY<ax
*/ $[}EV(#y
public void sort(int[] data) { PW|=IPS
int[] temp=new int[data.length]; k_{?{:X;y
mergeSort(data,temp,0,data.length-1); Fsm6gE`|n
} pU9.#O
;p2b^q'
private void mergeSort(int[] data, int[] temp, int l, int r) { WQ 2{`'z
int i, j, k; %YK xdp
int mid = (l + r) / 2; )=sbrCl,C/
if (l == r) =6qTz3t
return; ^GAJ9AF@(
if ((mid - l) >= THRESHOLD) d&CpaOSu
mergeSort(data, temp, l, mid); iMt3h8
else rrr_{d/
insertSort(data, l, mid - l + 1); d|oO2yzWv
if ((r - mid) > THRESHOLD) ]/kpEx
mergeSort(data, temp, mid + 1, r); i^e8.zgywF
else F|{uA/P{
insertSort(data, mid + 1, r - mid); 8q%y(e
"!D y[J
for (i = l; i <= mid; i++) { ^~I@]5Pq
temp = data; +}N'Xa/Jt
} t/Y0e#9,
for (j = 1; j <= r - mid; j++) { l_/(J)|a
temp[r - j + 1] = data[j + mid]; CvmIDRP*
} lyX3'0c
int a = temp[l]; Vi: ^bv
int b = temp[r]; C+uW]]~I)
for (i = l, j = r, k = l; k <= r; k++) { .=9WY_@SZ
if (a < b) { :^Pks R
data[k] = temp[i++]; );%H;X+x
a = temp; PWyf3
} else { ~x!up9
data[k] = temp[j--]; A$r$g\5+
b = temp[j]; qxb]UV,R
} MW6z&+Z
} DrKB;6
} H)i|?3Ip
# H
w(w
/** iX6>u4~(
* @param data Vn4wk>b}$2
* @param l =V]0G,,\
* @param i 7dcR@v`c
*/ *s*Y uY%y
private void insertSort(int[] data, int start, int len) { ')!X1A{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Oo@o$\+v
} ^e_LnJ+
} chKK9SC+|
} / n_s"[I4
} -z~!%4 a
Ac|\~w[\
堆排序: iW^J>aKy
R8k4?_W?T
package org.rut.util.algorithm.support; R__:~uv,
}1e4u{
import org.rut.util.algorithm.SortUtil; UPU$SZAIx
}VZExqm)
/** <M@-|K"Eb
* @author treeroot ey=KA t
* @since 2006-2-2 -1,0hmn=+
* @version 1.0 /V:9*C
*/ [K.1 X=O}
public class HeapSort implements SortUtil.Sort{ Q}|K29Y:p
,JE_aje7
/* (non-Javadoc) Q0Ft.b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X)[tb]U/Wx
*/ }a||@unr
public void sort(int[] data) { -p&u=
MaxHeap h=new MaxHeap(); d(o=)!p
h.init(data); A}SGw.3
for(int i=0;i h.remove(); 0o=HOCL\
System.arraycopy(h.queue,1,data,0,data.length); ^"X.aksA
} U_(>eVi7F
0SQr%:zG
private static class MaxHeap{ >Ua'*
^sD
M>OHp
void init(int[] data){
2Qp}f^
this.queue=new int[data.length+1]; %`yfi+e
for(int i=0;i queue[++size]=data; m+hI3@j
fixUp(size); k?14'X*7yu
} n(J>'Z
} RyJy%|\-S
xKG7d8=
private int size=0; );h(D!D,
3NgXM
private int[] queue; ^PTf8o
3&+dyhL'w
public int get() { Z5>~l
return queue[1]; D#b*M)X"
} 8x U*j
w'2FYe{wj
public void remove() { J+`aj8_ B
SortUtil.swap(queue,1,size--); ixu*@{<Z(
fixDown(1); y|}~"^+T
} $]We |
file://fixdown #m.e9MU
private void fixDown(int k) { ^
~Eh+
int j; F'Y ad
while ((j = k << 1) <= size) { cRVL1ne
if (j < size %26amp;%26amp; queue[j] j++; . ,^WCyvq
if (queue[k]>queue[j]) file://不用交换 y4Jc|)
break; I_ mus<sE
SortUtil.swap(queue,j,k); IC0L&;En
k = j; @gD)pH
} {*7MT}{(
} Ai<
beUS
private void fixUp(int k) { |6*Bu1
while (k > 1) { Tu#;Y."T
int j = k >> 1; X
."z+-eh
if (queue[j]>queue[k]) = ^NvUrK
break; bV8+Eu
SortUtil.swap(queue,j,k); B`B=bn+4
k = j; \vAjg
} eBrNhE-[G]
} D*%am|QL
etr-\Cp
} b#
N"}-\^
jmID@37t
} X_TjJmc
0SIC=p=J
SortUtil: ETdXk&AN
dH^6K0J
package org.rut.util.algorithm; KS$t
_6NUtU
import org.rut.util.algorithm.support.BubbleSort; K3?5bT_{
import org.rut.util.algorithm.support.HeapSort; gF{ehU%
import org.rut.util.algorithm.support.ImprovedMergeSort; $N=&D_Q
import org.rut.util.algorithm.support.ImprovedQuickSort; lGd'_~'=
import org.rut.util.algorithm.support.InsertSort; r)iEtT!p*
import org.rut.util.algorithm.support.MergeSort; uQ5h5Cfz
import org.rut.util.algorithm.support.QuickSort; -F ~DOG%
import org.rut.util.algorithm.support.SelectionSort; ;5 j|B|v
import org.rut.util.algorithm.support.ShellSort; %":3xj'EEI
IL].!9
/** Z+El(f x
* @author treeroot VL9wRu;
* @since 2006-2-2 {]HiT pn
* @version 1.0 _Op%H)
*/ &kg^g%%
public class SortUtil { NKO"'
public final static int INSERT = 1; }`"}eN @,
public final static int BUBBLE = 2; 0^ODJ7
public final static int SELECTION = 3; fu"cX;
public final static int SHELL = 4; : ,l7e
public final static int QUICK = 5; a: "1LnvR
public final static int IMPROVED_QUICK = 6; SyvoN,;Q
public final static int MERGE = 7; PM\Ju]
public final static int IMPROVED_MERGE = 8; 0|P=S|%~
public final static int HEAP = 9; =0)|psCsM
mTE(JZt
public static void sort(int[] data) { (C!p2f
sort(data, IMPROVED_QUICK); V?u#WJy/
} aA`eKy) \
private static String[] name={ J2=4%#R!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l 00i2w
}; b#6S8C+@
*G58t`]r
private static Sort[] impl=new Sort[]{ b>07t!;
new InsertSort(), f7=MgFi
new BubbleSort(), YXA@
c
new SelectionSort(), YN8x|DLi?
new ShellSort(), Mn0.!J
"
new QuickSort(), 2)f_L|o,m
new ImprovedQuickSort(), _?c.m*)A
new MergeSort(), axC|,8~tq
new ImprovedMergeSort(), ,;g%/6X
new HeapSort() T2e-RR
}; mU/o%|h
*g(d}C!
public static String toString(int algorithm){ cbJgeif
return name[algorithm-1]; ]Z!Y*v
} #J[g
r_
C`.YOkpj
public static void sort(int[] data, int algorithm) { nrl?<4_
impl[algorithm-1].sort(data); ,h*gd^i
} uavATnGO{B
AFAg3/
public static interface Sort { 4=yzf
public void sort(int[] data); .|,LBc!
} >tM4|w|
';I}6N
public static void swap(int[] data, int i, int j) { \"O5li3n
int temp = data; X=sE1RB
data = data[j]; W:r[o%B
data[j] = temp; A!lZyG!3
} K.
;ev
} UsE\p9mCuV