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。 pi(m7Ci"
插入排序: Lbgi7|&
.v
K-LHs
package org.rut.util.algorithm.support; p K*TE5]
B,@i
import org.rut.util.algorithm.SortUtil; (PLUFT
/** 2/?|&[
* @author treeroot ch]IzdD
* @since 2006-2-2 Q &8-\
* @version 1.0 }jXfb@`K
*/ O-wzz
public class InsertSort implements SortUtil.Sort{ x2xRBkRg=
sJZiI}Xc
/* (non-Javadoc) G|Ti4_w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,tFg4k[
*/ YK_7ip.a[
public void sort(int[] data) { Rcuz(yS8
int temp; dtDFoETz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VY-EmbkG-t
} cAw/I@jG
} =;L|gtH"
} 4W75T2q#
2?C)&
} j 7B!h|
)%TmAaj9d
冒泡排序: F ,kZU$
8*X4\3:*N
package org.rut.util.algorithm.support; &=[WIG+rk
>*bvw~y,
import org.rut.util.algorithm.SortUtil; ".%k6W<n
Pz7XAcPQ(
/** X$
D6Ey
* @author treeroot HS$r8`S?)
* @since 2006-2-2 ctQ/wrkU
* @version 1.0 :FF=a3/"6
*/ 4euO1=
public class BubbleSort implements SortUtil.Sort{ gXU8hTd8
u8^lB7!e/
/* (non-Javadoc)
7GGUV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Ld i|jL
*/ BT$_@%ea&
public void sort(int[] data) { )J |6 -C
int temp; TeQV?ZQ#}
for(int i=0;i for(int j=data.length-1;j>i;j--){ xdPx{"C
3
if(data[j] SortUtil.swap(data,j,j-1); %T[]zJ(
} BtZ yn7a
} sW$XH1Uf#
} 0RfZEG)
} [g,}gyeS(
\V:^h[ad
} z:O8Ls^\T
>_}
I.\X
选择排序: }H2R3icE
qs6aB0ln
package org.rut.util.algorithm.support; 3|7QUld
%<5'=t'|-U
import org.rut.util.algorithm.SortUtil; |Tw~@kT@
xw%0>K[
/** 7)m9"InDI
* @author treeroot y`Fw-!'o
* @since 2006-2-2 !>tL6+yj
* @version 1.0 d9ihhqq3}
*/ Bvj0^fSm
public class SelectionSort implements SortUtil.Sort { -Za/p@gM
=N@t'fOr
/* }]TxlSp!;
* (non-Javadoc) I fir ,8
* k)u[0}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Qq+4F)MD
*/ IV-{ve6
public void sort(int[] data) { 6@f-Glwg
int temp; & kIFcd@
for (int i = 0; i < data.length; i++) { :&Nbw
int lowIndex = i; $]1=\I
for (int j = data.length - 1; j > i; j--) { 6*?F @D2&
if (data[j] < data[lowIndex]) { $>gFf}#C
lowIndex = j; E^PB)D(.
} POW>~Tof1
} QJNFA}*>
SortUtil.swap(data,i,lowIndex); 0x7'^Z>-oe
} 4Hg9N}
} kza5ab
V]&\fk-{
} R]dg_Da
^aQ"E9
Shell排序: g}i61(
0YzpZW"+
package org.rut.util.algorithm.support; V)^+?B)T
+p^u^a
import org.rut.util.algorithm.SortUtil; neh(<>
"b[5]Y{
U
/** l,
wp4Ll
* @author treeroot l2d{ 73h
* @since 2006-2-2 ToQ"Iy?
* @version 1.0 iE{&*.q_}>
*/ _ |p8M!
public class ShellSort implements SortUtil.Sort{ j|n R"!
OSJ$d
/* (non-Javadoc) 598i^z{~0%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Al'3?
*/ Bt#N4m[X*|
public void sort(int[] data) { ^{{ qV
for(int i=data.length/2;i>2;i/=2){ \9d$@V
for(int j=0;j insertSort(data,j,i); u>$t'
} "KlwA.7/
} _ m>b2I?
insertSort(data,0,1); ]k(]qZ
} d3Rw!slIq
% nIf)/2g
/** AS,%RN^.
* @param data ;=@0'xPEa-
* @param j -8Xf0_
* @param i iLz@5Zj8
*/ 23?rEhKe
private void insertSort(int[] data, int start, int inc) { eQ"E
int temp; h~26WLf.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -&;TA0~;
} {!`4iiF
} M;NX:mX9
} 6RM/GM
Ie^l~Gb
} 9kojLqCT
7KPwQ?SjT
快速排序: 3F0 N^)@
V1?]|HTQcT
package org.rut.util.algorithm.support; G
j1_!.T
ca}2TT&t
import org.rut.util.algorithm.SortUtil; -+5>|N#
!c-*O<Y
/** fV:83|eQ
* @author treeroot .o8t+X'G
* @since 2006-2-2 @6d[=!9
* @version 1.0 iUwzs&frd
*/ IAEAhqp
public class QuickSort implements SortUtil.Sort{ nie% eC&U
b2]Kx&!
/* (non-Javadoc) bfO=;S]b!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `kr?j:g
*/ ]{ kPrey
public void sort(int[] data) { HqTjl4ai
quickSort(data,0,data.length-1); P_dJZ((X
} nd(S3rct&
private void quickSort(int[] data,int i,int j){ .KC++\{HE
int pivotIndex=(i+j)/2; @H<q"-J
file://swap U3kyraj
SortUtil.swap(data,pivotIndex,j); 7rPF$ \#
8] ikygt"
int k=partition(data,i-1,j,data[j]); J=L5=G7(
SortUtil.swap(data,k,j); ?}7p"3j'z
if((k-i)>1) quickSort(data,i,k-1); -F92 -jBM4
if((j-k)>1) quickSort(data,k+1,j); 66 Tpi![
7?t6UPf
} ^J d
r>@
/** v@Ox:wl>
* @param data zT[!o
j7
* @param i Hefg[$m
* @param j LF7SS;&~f
* @return f-2c0Bi
*/ 2JFpZU"1
private int partition(int[] data, int l, int r,int pivot) { 8V(pugJ
do{ uGt-l4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <,(,jU)j
SortUtil.swap(data,l,r); KYP!Rs/j.
} e|9A716x
while(l SortUtil.swap(data,l,r); c"Sq~X
return l; p:%loDk
} fzA9'i`
X jX2]
} xKC[=E>z
VD :/PL
改进后的快速排序: qCO/?kW
O~QB!<Q+
package org.rut.util.algorithm.support; `XB
9Mi=
g1o8._f.
import org.rut.util.algorithm.SortUtil; $A`VYJtt#
fX+O[j
/** 5Ph4<f` L~
* @author treeroot N[yy M'C
* @since 2006-2-2 v}x&?fU `
* @version 1.0 * 4Izy14e
*/ C
$JmzrE
public class ImprovedQuickSort implements SortUtil.Sort { "nWw;-V}}
ERt{H3eCcJ
private static int MAX_STACK_SIZE=4096; #,.Hr#3nI
private static int THRESHOLD=10; N?>vd*
/* (non-Javadoc) `@
FYkH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
jSA jcLR
*/ AK#1]i~
public void sort(int[] data) { '=6\v!
int[] stack=new int[MAX_STACK_SIZE]; ;\l,5EG
{_Gs*<.
int top=-1; ZW}_Qs
int pivot; mQ=#nk$~g
int pivotIndex,l,r; L:8q8i
IMfqiH)
stack[++top]=0; N36_C;K-z
stack[++top]=data.length-1; &I406Z f7y
;'Nd~:-]
while(top>0){ QwJyY{O`
int j=stack[top--]; yA>nli=
int i=stack[top--]; z~Q>V]a>;
4{l,
pivotIndex=(i+j)/2; LrK,_)r:~
pivot=data[pivotIndex]; T5:G$-qL(
l \?c}7k
SortUtil.swap(data,pivotIndex,j); [h:T*(R?
]d%8k}U
file://partition eN~=*Mn(za
l=i-1; 3{h_&Gbo'D
r=j; !L8#@BjU
do{ (b6NX~G-:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +KEWP\r
SortUtil.swap(data,l,r); )tpL#J
} 2[;_d;oB @
while(l SortUtil.swap(data,l,r); QVE6We
SortUtil.swap(data,l,j); +H2-ZXr
3Le{\}-$.
if((l-i)>THRESHOLD){ w'3iY,_ufC
stack[++top]=i; -S+zmo8
stack[++top]=l-1; {u9}bx'<
} f4Rf?w*
if((j-l)>THRESHOLD){ p[lA\@l[
stack[++top]=l+1; GDy9qUV
stack[++top]=j; kM@zyDn,
} zA"`!}*
i2^>vYCsl
} {vO9ptR;
file://new InsertSort().sort(data); RAK-UN
insertSort(data); {
buy"X4
} +&"zU GTIc
/** }-3mPy(*%
* @param data Uv~QUL3>
*/ c{LO6dNg\z
private void insertSort(int[] data) { |B2+{@R
int temp; PJ'E/C)i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CsifKHI
} ;]jNk'oa
} %9RF
} WSY}d
Vr
PAOJ\U
}
EUgs6[w 4
zZC9\V}R
归并排序: V,?yPi$#E
.K<Q&
package org.rut.util.algorithm.support; ED&
`_h7?
o\)F}j&b#=
import org.rut.util.algorithm.SortUtil; @{pLk4E
uc"P3,M
/** 1~QPG\cdIX
* @author treeroot |qZ1|
* @since 2006-2-2 BFJnV.0M!
* @version 1.0 [R7Y}k:9U
*/ s&!a
public class MergeSort implements SortUtil.Sort{ '-/xyAzS
-8rjgB~."/
/* (non-Javadoc) aCLq k'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }I6vqG
*/ R n*L
public void sort(int[] data) { !1Cy$}w
int[] temp=new int[data.length]; rI-%be==
mergeSort(data,temp,0,data.length-1); `%Al>u5
} Q'mM3pq4r
kd$D 3S^{
private void mergeSort(int[] data,int[] temp,int l,int r){ 9v!1V,`j"
int mid=(l+r)/2; nmi|\mof
if(l==r) return ; N<KS(@v
y
mergeSort(data,temp,l,mid); y
{<9]'
mergeSort(data,temp,mid+1,r); bB;5s`-
for(int i=l;i<=r;i++){ ^4Ah_U
temp=data; 9Ly]DZ;L
} f &wb
int i1=l; "{Eta
int i2=mid+1; \<6CZ
for(int cur=l;cur<=r;cur++){ _8)*]-
if(i1==mid+1) ,tJ"
5O3-
data[cur]=temp[i2++]; 'D"C4;X
else if(i2>r) 'W,jMju
data[cur]=temp[i1++]; 1&(V
else if(temp[i1] data[cur]=temp[i1++]; ;x1PS
else ~B(4qK1G
data[cur]=temp[i2++]; %zw1}|s#z
} M b1sF
} WPG(@zD
M*HnM(
} f\>M'{cV
@Sbe^x
改进后的归并排序: *lw_=MXSK
@w !PaP
package org.rut.util.algorithm.support; hJ#xB6
D^3vr2
import org.rut.util.algorithm.SortUtil; e?ly H
r7,t";?>
/** ^vO+(p
* @author treeroot @qlK6tE`
* @since 2006-2-2 QM#4uI55B
* @version 1.0 K$_0`>[
*/ V0XvJ
public class ImprovedMergeSort implements SortUtil.Sort { 6}Y#= }
V2|aN<Sx<
private static final int THRESHOLD = 10; [ $n_6
<r`2)[7N
/* !|S43i&p
* (non-Javadoc) VsE9H]v
* vVe';|8v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =k0_eX0
*/ ~-J]W-n
public void sort(int[] data) { >R!jB]5
int[] temp=new int[data.length]; hL;(C)(
mergeSort(data,temp,0,data.length-1); j*jo@N|
} Q_X.rUL0w
&_|#.
private void mergeSort(int[] data, int[] temp, int l, int r) { > eIP.,9
int i, j, k; zSja/yq
int mid = (l + r) / 2; #c?j\Y9nz
if (l == r) +sUFv)!4
return; #"\gLr_:m
if ((mid - l) >= THRESHOLD) bNNr]h8y-
mergeSort(data, temp, l, mid); fs%.}^kn
else os={PQRD
insertSort(data, l, mid - l + 1); g($DdKc|g
if ((r - mid) > THRESHOLD) }$Tl ?BRpU
mergeSort(data, temp, mid + 1, r); >P@H#=
else mFaZio0GK
insertSort(data, mid + 1, r - mid); D(RTVef
^y1j.M@q
for (i = l; i <= mid; i++) { /M4{Wc
temp = data; T
iiW p!mX
} H>B&|BO_[
for (j = 1; j <= r - mid; j++) { {Um)15K
temp[r - j + 1] = data[j + mid]; wlk4*4dKn
} L(-b@Joh
int a = temp[l]; _JE"{ ;
int b = temp[r]; b@f$nS
B
for (i = l, j = r, k = l; k <= r; k++) { '*w00
if (a < b) { k $J zH$
data[k] = temp[i++]; [knN:{ l
a = temp; r^paD2&}
} else { ~%=MpQ3
data[k] = temp[j--]; 5r8<7g:>C
b = temp[j]; q~ZNd3O
} 78# v
} R$TB1w9]
} K&70{r
k!HK 97qA
/** )ZqTwEr@[
* @param data $5<#n@
* @param l $#S&QHyEe
* @param i b+6\JE^Mz
*/ w6GyBo{2O_
private void insertSort(int[] data, int start, int len) { SO(NVJh
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _FVcx7l!u
} .=;3d~.]
} ^_u kLzP9
} \6<=$vD
} M
.JoHH
sy"^?th}b
堆排序: xt%7@/hiE
L3 --r
package org.rut.util.algorithm.support; l6kWQpV
aV?@s4
import org.rut.util.algorithm.SortUtil; +hT:2TXn
)oPLl|=h
/** ruzspS
* @author treeroot 3?7\T#=
* @since 2006-2-2 M)N?qRD
* @version 1.0 }\#Rot>Y
*/ TDNQu_E
public class HeapSort implements SortUtil.Sort{ n3Z5t
5b[jRj6
/* (non-Javadoc)
4/1d&Sg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WP+oFkw>
*/ f Tl<p&b
public void sort(int[] data) { D+z?wuXk
MaxHeap h=new MaxHeap(); qA$*YIlK
h.init(data); m~u5kbHOi=
for(int i=0;i h.remove(); O#k6' LN?
System.arraycopy(h.queue,1,data,0,data.length); ~ZhraSI)G
} r1LViK
"a"]o
private static class MaxHeap{ M|qteo
H{k^S\K
void init(int[] data){ *
%M3PTY\
this.queue=new int[data.length+1]; (?{MEwHG
for(int i=0;i queue[++size]=data; Q[I=T&
fixUp(size); mfo1+owT
} y_IM@)1H~
} jvFTR'R)=
M:3h e
private int size=0; }36QsH8
;u(<h?%e
private int[] queue; M8Z2Pg\0
"WK{ >T
public int get() { o=?C&f{
return queue[1]; Z1Z1@2 T
} (%xwl
Mo @C9Y0
public void remove() { K7W6ZH9;
SortUtil.swap(queue,1,size--); `~;rblo;
fixDown(1); @reeO=
} Jesjtcy<*
file://fixdown [P7N{l=I
private void fixDown(int k) { &2zq%((r
int j; +0q>fp_K(+
while ((j = k << 1) <= size) { e\JojaV
if (j < size %26amp;%26amp; queue[j] j++; Pgus42f%
if (queue[k]>queue[j]) file://不用交换 O1*NzY0Y%-
break; BWuqo
SortUtil.swap(queue,j,k); x{c/$+Z[
k = j; <l9-;2L4
} !\L/[:n
} +g]yA3
private void fixUp(int k) { ugx%_x6
while (k > 1) { fUQ6Z,9
int j = k >> 1; ?Poq2
if (queue[j]>queue[k]) I{:(z3
break; .j>hI="b
SortUtil.swap(queue,j,k); /&{$ pM|?
k = j; )!:Lzi
} lBFMwJU)
}
q^L<X)
(tGY%oT"
} xD[Gq%
/iV}HV0
} <xC#@OZ
z;wELz1L{
SortUtil: e=;AfK
%v7[[U{T
package org.rut.util.algorithm; Zg`Mz
_?
?6jkI2w
import org.rut.util.algorithm.support.BubbleSort; K/=_b<
import org.rut.util.algorithm.support.HeapSort; :`2=@ .
import org.rut.util.algorithm.support.ImprovedMergeSort; X>.
NFB
import org.rut.util.algorithm.support.ImprovedQuickSort; ;cz|ss=
import org.rut.util.algorithm.support.InsertSort; B7<Kc
import org.rut.util.algorithm.support.MergeSort; Ch%m
import org.rut.util.algorithm.support.QuickSort; -O!Zxg5x
import org.rut.util.algorithm.support.SelectionSort; Bk\Gj`"7
import org.rut.util.algorithm.support.ShellSort; adi[-L#
-7&Gi
+]
/** D<X.\})Md
* @author treeroot
D"ehWLj
* @since 2006-2-2 Xy &uZ
* @version 1.0 V-r3-b
*/ <u:WlaS
public class SortUtil { z)=+ F]
public final static int INSERT = 1; XNb ZNaAd
public final static int BUBBLE = 2; F.=Bnw/-
public final static int SELECTION = 3; RxN,^!OV
public final static int SHELL = 4; SdwS= (e6
public final static int QUICK = 5; %8M)2?E
public final static int IMPROVED_QUICK = 6; Io|Aj
public final static int MERGE = 7; 0{PzUIM,W
public final static int IMPROVED_MERGE = 8; n[,w f9
public final static int HEAP = 9; z.VyRB i0
>ap1"n9k
public static void sort(int[] data) { J@ktyd(P
sort(data, IMPROVED_QUICK); Ze3X$%kWi
} WJ9cZL
private static String[] name={ ^3FE\V/=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
( nab
}; [wB9s{CX
"y<?Q}1
private static Sort[] impl=new Sort[]{ T,OwM\`.X{
new InsertSort(), rf%7b8[v
new BubbleSort(), \VFHHi:I
new SelectionSort(), OOz[-j>'Y+
new ShellSort(), W$Yc'E
;
new QuickSort(), Pv+5K*"7Cg
new ImprovedQuickSort(), V@QK
new MergeSort(), w7n373y%
new ImprovedMergeSort(), y tf b$;|
new HeapSort() \yGsr Bl
}; {Pu\?Cq
V)i5=bHC
public static String toString(int algorithm){ O8W7<Wc|z
return name[algorithm-1]; 7 +@qB]Bi<
} = }:)y0L
BMIyskl=i
public static void sort(int[] data, int algorithm) { @IP)S[^' t
impl[algorithm-1].sort(data); !!nuAQ"E[
} )
(Tom9^
H<G4O02i_
public static interface Sort { 3TZ*RPmFRm
public void sort(int[] data); kY&h~Q
} =@5x"MOz
Iu35#j
public static void swap(int[] data, int i, int j) {
E|$Oha[
int temp = data; )CS.F=
data = data[j]; `K
>?ju"
data[j] = temp; b]JI@=s?
} J!*/a'Cv
} 'XUKN/.