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。 h\ybh
插入排序: /3c1{%B\
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package org.rut.util.algorithm.support; IM@Qe|5
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import org.rut.util.algorithm.SortUtil; H R
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/** >:Oo[{)
* @author treeroot gM=~dBz
* @since 2006-2-2 fcBSs\\C~
* @version 1.0 y1AS^'
*/ ^1nf|Xj[
public class InsertSort implements SortUtil.Sort{ WW_X:N~~e\
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/* (non-Javadoc) aY?}4Bx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P$oa6`%l
*/ ; 6zu!
public void sort(int[] data) { TfxKvol'
int temp; {&4qknPd%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $Z,+aLmb
} mee-Qq:}
} UU !I@
} !#?tA/t@
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} ,onv
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冒泡排序: [[|;Wr}2
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package org.rut.util.algorithm.support; C1nQZtF R
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import org.rut.util.algorithm.SortUtil; LTCjw_<7
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/**
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* @author treeroot h?O-13v
* @since 2006-2-2 %Wu8RG}
* @version 1.0 MdKZH\z/
*/ Ay_<?F+&
public class BubbleSort implements SortUtil.Sort{ Gm%[@7-
K0#tg^z5d
/* (non-Javadoc) 0I&rZMpF&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pp-Ur?PM
*/ [Q*kom :
public void sort(int[] data) { IrVeP&KM+
int temp; Kfr?sX
for(int i=0;i for(int j=data.length-1;j>i;j--){ N" 8o0>
if(data[j] SortUtil.swap(data,j,j-1); aL`pvsnF
} 4 I~,B[|
} ULJI`I|m
} YA|*$$
} EHb:(|UA%8
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} FStfGN
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选择排序: L%<1C\k
%DN&K
package org.rut.util.algorithm.support; zz9.OnZ~
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import org.rut.util.algorithm.SortUtil; BkJcT
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/** y>o#Hq&qM
* @author treeroot *oPSkEA{
* @since 2006-2-2 }I;W
* @version 1.0 hN} X11
*/ vrbS-Z<S9
public class SelectionSort implements SortUtil.Sort { wx1uduT)
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/* sM4wh_lO
* (non-Javadoc) 9}\T?6?8pX
* BAPi<U'D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "- Ns1A8
*/ J>'o,"D
public void sort(int[] data) { HOw][}M_w
int temp; ;L`'xFo>>
for (int i = 0; i < data.length; i++) { #8RQ7|7b|
int lowIndex = i; &@Q3CCDS
for (int j = data.length - 1; j > i; j--) { 'D-imLV<<
if (data[j] < data[lowIndex]) { Nhf!;>
lowIndex = j; UO&S6M]v7
} ;EJ6C#}
>7
} Ff,M~zn
SortUtil.swap(data,i,lowIndex); BBx"{~
} s 2$R2,
} Gq{v)iN
0s8S`hCn>
} oYF8:PYB
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Shell排序: _S[H:b$?
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package org.rut.util.algorithm.support; QL)UPf>Kp
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import org.rut.util.algorithm.SortUtil; -py.YZ
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/** toCN{[
* @author treeroot G ;z2}Ei
* @since 2006-2-2 %mq]M
* @version 1.0 vSX
6~m
*/ D"o>\Q
public class ShellSort implements SortUtil.Sort{ ]EK"AuEz`
n% *u;iG
/* (non-Javadoc) gC3{:MC-G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wb{y]~&6K
*/ +F/ '+
public void sort(int[] data) { A6sBObw;
for(int i=data.length/2;i>2;i/=2){ tSm|U<
for(int j=0;j insertSort(data,j,i); ?;*mSQA`J
} z!1j8o2
} S:5Nh^K
insertSort(data,0,1); $+mmqc8
} ~E!"YkIr
-ZuzJAA
/** eL(T
* @param data X23TS`
* @param j dFUsQ_]<
* @param i IOJ fv8
*/ FCIT+8K
private void insertSort(int[] data, int start, int inc) { n8iN/Y<%U
int temp; 1jV^\x0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \nJrjHA
} J0>Q+Y
} XGUF9arN
} j{HxX
=HSE
} LHacHv
$$8"i+,K
快速排序: 9LFg":
T&!>lqU!J
package org.rut.util.algorithm.support; e8[*=&
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import org.rut.util.algorithm.SortUtil; E:i3
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s
/** sFGXW
* @author treeroot 0]WM:6 h
* @since 2006-2-2 R#r?<Ofw4
* @version 1.0 /,;9hx
*/ )kkO:j
public class QuickSort implements SortUtil.Sort{ fg,~[%1
-1< }_*
/* (non-Javadoc) R~tv?hP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }&!rIU
*/ >N*QK6"=|
public void sort(int[] data) { 4];NX
quickSort(data,0,data.length-1); a-Y K*
} p<![JeV
private void quickSort(int[] data,int i,int j){ wRuJein#
int pivotIndex=(i+j)/2; YsTfv1~z#
file://swap zX5p'8-
SortUtil.swap(data,pivotIndex,j); d8x$NW-s
O" z=+79q
int k=partition(data,i-1,j,data[j]); / '7WL[<
SortUtil.swap(data,k,j); Ek4aC3
if((k-i)>1) quickSort(data,i,k-1); ?d_Cy\G
if((j-k)>1) quickSort(data,k+1,j); wPW9 bu
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} ;[6u79;I
/** }R
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* @param data GI~;2 `V
* @param i S</"^C51J
* @param j F\XzP\
* @return 7lh%\
*/ 8gx^e./
private int partition(int[] data, int l, int r,int pivot) { `j<'*v
zo
do{ ?5->F/f&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )ei+ewVZ
SortUtil.swap(data,l,r); e0hT
} mG2}JWA
while(l SortUtil.swap(data,l,r); +)V6"XY-(
return l; -m__I U
} }XAoMp
[szwPNQ_
} FUHjY
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改进后的快速排序: ."H5.'
hZ%Ie%~n
package org.rut.util.algorithm.support; ;/YSQt)rc>
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import org.rut.util.algorithm.SortUtil; Ya>cGaLq
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/** xXyzzr1[
* @author treeroot jm*v0kNy
* @since 2006-2-2 a
@TAUJ,
* @version 1.0 (57x5qP
X
*/ `HHbQXB
public class ImprovedQuickSort implements SortUtil.Sort { G&;W
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private static int MAX_STACK_SIZE=4096; 0">#h
private static int THRESHOLD=10; 1&m08dZm5
/* (non-Javadoc) iPs()IN.O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5v?6J#]2
*/ |_ ;-~bmb
public void sort(int[] data) { n,fUoS
int[] stack=new int[MAX_STACK_SIZE]; R Jg# A`
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int top=-1; V6Q[Y>84~a
int pivot; ~fS#)X3 D
int pivotIndex,l,r; d2 d^XMe!
Xe*
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stack[++top]=0; aUJ&
stack[++top]=data.length-1; b^%4_[uRu
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while(top>0){ zg^5cHP\
int j=stack[top--]; >w
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int i=stack[top--]; >u6kT\|^C
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; JM M\
VNMhtwmK,
SortUtil.swap(data,pivotIndex,j); n[{o~VN
D@f%&|IZ
file://partition )~WxNn3rx
l=i-1; ]5}
=r
r=j; txliZ|.O
do{ TpnkJygIm
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &\5T`|~)!
SortUtil.swap(data,l,r); =JEnK_@?K\
} 0$P40 7
while(l SortUtil.swap(data,l,r); 3L#KHTM
SortUtil.swap(data,l,j); RJGf@am&
n RXf \*"3
if((l-i)>THRESHOLD){ ^D6 JckW
stack[++top]=i; LtCkDnXk
stack[++top]=l-1; :k JSu{p
} ) I@gy
if((j-l)>THRESHOLD){ ?SS?I
stack[++top]=l+1; y/Nvts2!C
stack[++top]=j; Z|3l2ucl
} bluC P|
kR'!;}s
} C
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file://new InsertSort().sort(data); r{Xh]U&>k
insertSort(data); B_:K.]DK`
} VCh%v -/
/** .'SM|r$
* @param data {U&Mo97rzX
*/ S6Kaw
private void insertSort(int[] data) { .*v8*8OJ&
int temp; %(n4`@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c?[A
} koaH31Q
} ZfMJU
} XD*$$`+#
#p\sw
} Z\NC+{7k]
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归并排序: PN<Y&/fB
o%CBSm]
package org.rut.util.algorithm.support; G*Qk9bk9
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import org.rut.util.algorithm.SortUtil; #E*jX-JT
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/** >6(nW:I0y
* @author treeroot haB$W 4x
* @since 2006-2-2 N7Dm,Q ]
* @version 1.0 '9i:b]Hru
*/ C[&Lh_F\
public class MergeSort implements SortUtil.Sort{ W"z!sf5U
#{<Jm?sU
/* (non-Javadoc) 2,dGRf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [7L1y) I(
*/ ?EKYKLwr
public void sort(int[] data) { pNE!waR>
int[] temp=new int[data.length]; $] w&`F-
mergeSort(data,temp,0,data.length-1); 6nxf<1
} ,TP^i 0
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~D
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int mid=(l+r)/2; _RhCVoeB
if(l==r) return ; u9'4q<>&
mergeSort(data,temp,l,mid); |9}G
mergeSort(data,temp,mid+1,r); Lv#DIQ8y
for(int i=l;i<=r;i++){ 44wY5nYNt
temp=data; p`XI (NI
} H@OYtPHGR
int i1=l; ~I2IgEj>]
int i2=mid+1; bCc^)o/w
for(int cur=l;cur<=r;cur++){ QNn$`Qz.
if(i1==mid+1) S1zV.]
data[cur]=temp[i2++]; !%]]lxi
else if(i2>r) i7*4hYY
data[cur]=temp[i1++]; 0I079fqk<
else if(temp[i1] data[cur]=temp[i1++]; oDA1#-
else e>"{nOY4
data[cur]=temp[i2++]; d0IHl!X
} -s4qm)\
} zn@tLLX
F5&4x"c
} L
+-B,466
{ 5h6nYu
改进后的归并排序: %-H
&eyFApM[Z
package org.rut.util.algorithm.support; K*p^Gs,
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import org.rut.util.algorithm.SortUtil; =3""D{l
#^#N%_8
/** eEupqOF*:W
* @author treeroot R6CxNPRJ
* @since 2006-2-2 \ tU91VIj
* @version 1.0 O:#t>
;
*/ hA)3Ah*
public class ImprovedMergeSort implements SortUtil.Sort { Xg#Dbf4
e6#^4Y/+`
private static final int THRESHOLD = 10; .2Gn)dZU
)|'? uN7
/* #%B1,.A
* (non-Javadoc) JFl@{6c
* I)9;4lix
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t$rWE|+_z
*/ qDNqd
public void sort(int[] data) { KZ;U6TBiB
int[] temp=new int[data.length]; aFd
,
mergeSort(data,temp,0,data.length-1); <86upS6
} 1rT}mm/e;
nA5v+d-<T
private void mergeSort(int[] data, int[] temp, int l, int r) { (9@6M8A
int i, j, k; A]ciox$AjW
int mid = (l + r) / 2; ogDyrY}]
if (l == r) OZ$u&>916
return; xOPSw|!w
if ((mid - l) >= THRESHOLD) Vz51=?75
mergeSort(data, temp, l, mid); js'*:*7
else Xpjk2 [,
insertSort(data, l, mid - l + 1); 0.bmVN<
if ((r - mid) > THRESHOLD) B1J+`R3OX
mergeSort(data, temp, mid + 1, r); x^9W<
else %GjF;dJ
insertSort(data, mid + 1, r - mid); N]} L*o&
h`?0=:Tru
for (i = l; i <= mid; i++) { x-(?^g
temp = data; ,$7LMTVDrE
} e2k!5OS
for (j = 1; j <= r - mid; j++) { _sJp"4?
temp[r - j + 1] = data[j + mid]; %UY=VE\F
} 5|&Sg}_
int a = temp[l]; J1P82=$,
int b = temp[r]; 9akCvY#Q
for (i = l, j = r, k = l; k <= r; k++) { );7csh%
if (a < b) { )xlNj$(x5n
data[k] = temp[i++]; c"77<Db$
a = temp; a{el1_DIGK
} else { +#,t
data[k] = temp[j--]; auaFP-$`f
b = temp[j]; ~\Fde^1
} &I <R|a
} 2mVH*\D
} i#iY;R8
)6^b\`
/** Vr`UF0_3q
* @param data z35n3q
* @param l y @h^
* @param i VqbMFr<k
*/ 9{?<.%
private void insertSort(int[] data, int start, int len) { 24>{T5E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j?3J-}XC
} ?^5W.`Y2i
} 9O~1o?ni
} ib*$3Fn~
} }0}J
$1#|<|
堆排序: nS]/=xP{
BDD^*Y
package org.rut.util.algorithm.support; ,N5Rdgzk
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import org.rut.util.algorithm.SortUtil; -L</,>p
cD-\fRBGK
/**
> ")%4@
* @author treeroot 2m/1:5
* @since 2006-2-2 &=K-~!?
* @version 1.0 _QkU,[E
*/ rL&585
public class HeapSort implements SortUtil.Sort{ SDcD(G
3sHC1+
/* (non-Javadoc) HOtays,#<}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KvkiwO(
*/ E':y3T@."
public void sort(int[] data) { g6;O)b
MaxHeap h=new MaxHeap(); pG:FDlR~
h.init(data); IgR_p7['.
for(int i=0;i h.remove(); Op\l
System.arraycopy(h.queue,1,data,0,data.length); BY32)8SH
} ]e7D""
R8O<}>3a
private static class MaxHeap{ ~$YFfv>
gXc&uR0S
void init(int[] data){ xBR2tDi%
this.queue=new int[data.length+1]; dD@T}^j *|
for(int i=0;i queue[++size]=data; sW@4r/F>:D
fixUp(size); UOT~L4G
} +twJHf_U
} e8--qV#<
ib;:*
private int size=0; c]t=#
onHUi]yYu{
private int[] queue; T[~ak"M
\E]s]ft;+
public int get() { P=(\3ok
return queue[1]; SI8mr`gJ
} hdfNXZ{A"
.ye5;A}
public void remove() { @1^iWM j
SortUtil.swap(queue,1,size--); rqT@i(i
fixDown(1); u` R
} xa5I{<<U
file://fixdown D.)R8X
private void fixDown(int k) { ,hYUxh45
int j; ^A;v|U
while ((j = k << 1) <= size) { b"/P
if (j < size %26amp;%26amp; queue[j] j++; [;h@q}
if (queue[k]>queue[j]) file://不用交换 - "h
{B
break; q}1AV7$Ai
SortUtil.swap(queue,j,k); i*nNu-g
k = j; !NZFo S~
} O`rAqO0F
} ){icI<
private void fixUp(int k) { i[T!{<
while (k > 1) { q71Tg
int j = k >> 1; ;,'eO i
if (queue[j]>queue[k]) $l 0^2o=
break; haqL
DVrf
SortUtil.swap(queue,j,k); j""u:l^+x
k = j; &AoXv`l4
} . m@Sk`s
} !sK{:6s
5lVDYmh
} coyy T
.y#@~H($
} p@YU7_sF^!
GwxfnCKi9
SortUtil: _u]Wr%D@
`~VV1
package org.rut.util.algorithm; HwiG~'Ah9
SI4M<'fK
import org.rut.util.algorithm.support.BubbleSort; o%RyE]pw,
import org.rut.util.algorithm.support.HeapSort; AL3zE=BL
import org.rut.util.algorithm.support.ImprovedMergeSort; {[NBTT9&
import org.rut.util.algorithm.support.ImprovedQuickSort; pR; AqDQ
import org.rut.util.algorithm.support.InsertSort;
s@K|zOx
import org.rut.util.algorithm.support.MergeSort; ko=vK%E[
import org.rut.util.algorithm.support.QuickSort; OqHD=D[
import org.rut.util.algorithm.support.SelectionSort; {6 C!^ 5
import org.rut.util.algorithm.support.ShellSort; _LCK|H%v'
BQ2DQ7q
/** -jFvDf,M,D
* @author treeroot }9:d(B9;
* @since 2006-2-2 |r%6;8A]i
* @version 1.0 cQA;Y!Q#
*/ k`'^e/
public class SortUtil { D)K/zh)
public final static int INSERT = 1; '\[GquK;P
public final static int BUBBLE = 2; `G@]\)-!
public final static int SELECTION = 3; WVir[Kv%
public final static int SHELL = 4; o~*% g.
public final static int QUICK = 5; mj{TqF
public final static int IMPROVED_QUICK = 6; Vj2]-]Cm
public final static int MERGE = 7; EO:i+e]=
public final static int IMPROVED_MERGE = 8; j1_CA5V
public final static int HEAP = 9; OU/PB
diaLw
public static void sort(int[] data) { '>@evrG
sort(data, IMPROVED_QUICK); }BzV<8F
} TMT65X!
private static String[] name={ /!P,o}l7
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" F
MHpa
}; &Plc
)xoI H{
private static Sort[] impl=new Sort[]{ Kj;Q;Ii
new InsertSort(), #JWW ;M6F
new BubbleSort(), Nw/4z$].J
new SelectionSort(), =NQDxt}
new ShellSort(), Cevl#c5p>
new QuickSort(), g-bHf]'
new ImprovedQuickSort(), F$^RM3
new MergeSort(), es6!p 7p?
new ImprovedMergeSort(), }[ld=9p(
new HeapSort() {M )Y6\v
}; a[1^)=/DM
5.q2<a :
public static String toString(int algorithm){ 6`J*{%mP
return name[algorithm-1]; z)#I"$!d
} bLhTgss](
~+/IzckrG
public static void sort(int[] data, int algorithm) { )CD4k:bm
impl[algorithm-1].sort(data); Tu o`>ZA
} cGIxE[n'
+? E~F
public static interface Sort { onI%Jl sq
public void sort(int[] data); iV58 m
} ; $i{>mDT
zogw1g&C
public static void swap(int[] data, int i, int j) { hs!a'E
int temp = data; &5h{XSv
data = data[j]; o:W>7~$jr=
data[j] = temp; Ej~vp2
} iVu
} KLBU8%