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。 +<qmVW^X
插入排序: q6E8^7RtS@
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package org.rut.util.algorithm.support; q u>5 rg-
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import org.rut.util.algorithm.SortUtil; 2Cy">Exl
/** _g{*;?mS
* @author treeroot xnz(hz6
* @since 2006-2-2 }?PvNK]",
* @version 1.0 $:&?!>H
*/ >wsS75n1
public class InsertSort implements SortUtil.Sort{ dt -EY
IC5[:UZ5]
/* (non-Javadoc) [Ol}GvzJ7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2oL~N*^C
*/ +[W_Jz
public void sort(int[] data) { T2Duz,
int temp; bD*z"e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a-nf5w>&q
} gD$bn=
} PH,MZ"Z%
} \gtI4zl*J
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} <qGVOAnz+
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冒泡排序: ZAKNyA2
zpPzXQv]/
package org.rut.util.algorithm.support; Mv\odf\]
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import org.rut.util.algorithm.SortUtil; s#f6qj
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/** $x%3^{G
* @author treeroot +A3Q$1F
* @since 2006-2-2 ^
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* @version 1.0 I\8f`l
*/ y7&8P8R
public class BubbleSort implements SortUtil.Sort{ u<}PcI.
:Fvd?[
/* (non-Javadoc) *ud"?{)Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K9-?7X
*/ ,7wxVR%Ys
public void sort(int[] data) { CO+[iJ,4C+
int temp; @|7Ma/8v
for(int i=0;i for(int j=data.length-1;j>i;j--){ /CXrxeo
if(data[j] SortUtil.swap(data,j,j-1); fF~3"!1#\I
} R78=im7
}
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} Ng;K-WB\
} jsXj9:X I
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} Hcts^zm2u
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选择排序: WJB/X"J
Ru1I,QvCj"
package org.rut.util.algorithm.support; oH[4<K>
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import org.rut.util.algorithm.SortUtil; k1EAmA
l
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/** jl!rCOLt4
* @author treeroot e-}b]\
* @since 2006-2-2 ]w)*8
w.)
* @version 1.0 ~Sr`Tlp
*/ Q t!X<.
public class SelectionSort implements SortUtil.Sort { ,+iREh;
p4ML }q8
/* FIB 9W@oao
* (non-Javadoc) G^Z
SQ!
* jz\LI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \xQ10\u
*/ ,mu=#}a@}
public void sort(int[] data) { h4j{44MT
int temp; QasUgZ
for (int i = 0; i < data.length; i++) { Z+zx*(X
int lowIndex = i; q~3dbj
for (int j = data.length - 1; j > i; j--) { hXvg<Rf
if (data[j] < data[lowIndex]) { D@M
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lowIndex = j; !9$xfg}
} |{KZ<
} fgb%SIi?
SortUtil.swap(data,i,lowIndex); t-xw=&!w
} `%8by y@$
} U%swqle4
``~7z;E%@
} ]Zfg~K(
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Shell排序: "V|1w>s
=Q % F~
package org.rut.util.algorithm.support; Ms^U`P^V~P
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import org.rut.util.algorithm.SortUtil; 8 |2QJ
Q:.q*I!D<4
/** hOI|#(-
* @author treeroot -}l iG
* @since 2006-2-2 GqFDN],Wp
* @version 1.0 )qGw!^8
*/ ogt<vng
public class ShellSort implements SortUtil.Sort{ #q7`"E=M"
_z:7Dj#
/* (non-Javadoc) 95.m^~5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "3kIQsD|j
*/ }L.xt88
public void sort(int[] data) { v:YW[THre
for(int i=data.length/2;i>2;i/=2){ T[iwP~l
for(int j=0;j insertSort(data,j,i); cD6$C31Y]
} W@^O'&3d
} (~r"N?`
insertSort(data,0,1); <B;l).[6
} Mgi~j.[
'4<o&b^yQ
/** q7f`:P9~
* @param data 2[HPU M2>
* @param j BgQ/$,
* @param i nq8XVT.m^\
*/ [DH4iG5
private void insertSort(int[] data, int start, int inc) { , ?U)mYhI
int temp; CuvY^["
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *1{A'`.=\
} ]& ckq
}
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} ?]$<Ufr
6?~9{0
} hxH6Ii]\
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快速排序: A,~KrRd
n:OXv}pv
package org.rut.util.algorithm.support; GdI,&|/
-X!<$<\y;
import org.rut.util.algorithm.SortUtil; 7@\.()
vj%"x/TP
/** 6qFzo1LO
* @author treeroot ^tGAJ_b79
* @since 2006-2-2 O>qlWPht
* @version 1.0 zKGZg>q
*/ j8p<HE51
public class QuickSort implements SortUtil.Sort{ #%@bZ f
(m:Q'4Ep
/* (non-Javadoc) 9dNkKMc@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A;Y~Hu4KPZ
*/ ]jxyaE&%4
public void sort(int[] data) { E> GmFw
quickSort(data,0,data.length-1); 7>y]uT@ar
} @3KSoA"^
private void quickSort(int[] data,int i,int j){ ,$:u^;V(
int pivotIndex=(i+j)/2; nMzt_Il I
file://swap 3WF]%P%
SortUtil.swap(data,pivotIndex,j); dY&v(~&;]
PL&>pM
int k=partition(data,i-1,j,data[j]); 'RKpMdoz
SortUtil.swap(data,k,j); -%MXt
if((k-i)>1) quickSort(data,i,k-1); \99'#]\_/E
if((j-k)>1) quickSort(data,k+1,j); J{dO0!7y
nc:/GxP
} 2~f*o^%l
/** ~/K&=xE
* @param data Db|JR
* @param i xbhHP2F|
* @param j z3i`O
La
* @return DSRc4|L
*/ |OF3O,5z
private int partition(int[] data, int l, int r,int pivot) { 7QTS@o-
do{ v\6.#>NQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1$03:ve1
SortUtil.swap(data,l,r); ffL]_E
} fDns r"T
while(l SortUtil.swap(data,l,r); iu=Mq|t0
return l; #Y7iJPO
} p1niS:}j
!`=iKe&%E
} )J @[8 x`
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改进后的快速排序: @4*eH\3
,0h{RZKw
package org.rut.util.algorithm.support; &77J,\C$:
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import org.rut.util.algorithm.SortUtil; }{PG^ Fc<P
Jv]$@>#
/** P9q=tC3^
* @author treeroot A2P.5EN
* @since 2006-2-2 /paZJ}Pr.
* @version 1.0 Ahr
*/ S5UQ
public class ImprovedQuickSort implements SortUtil.Sort { NJQy*~P
0&tr3!h\
private static int MAX_STACK_SIZE=4096; 3&+nV1
private static int THRESHOLD=10; r-]%R:U*
/* (non-Javadoc) u1.0-Y?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"Ko sSs
*/ um( xZ6&m
public void sort(int[] data) { l2Rnyb<;;
int[] stack=new int[MAX_STACK_SIZE]; HoeW6U V
}-9 c1&m
int top=-1; xjrL@LO#
int pivot; s |o(~2j
int pivotIndex,l,r; EDF0q i
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stack[++top]=0; g+?2@L$L
stack[++top]=data.length-1; RfT)dS+rAh
q:vGG K^
while(top>0){ $IdU
int j=stack[top--]; [N"=rY4G
int i=stack[top--]; t=jG $A
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pivotIndex=(i+j)/2; 7m:TY>{
pivot=data[pivotIndex]; q_"w,28
)Z\Zw~L
SortUtil.swap(data,pivotIndex,j); >Dz8+y
Tiimb[|
file://partition J'k^(ZZ
l=i-1; 5Ux= 5a
r=j; >q ,Z*s>?
do{ vw-y:,5`t8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3[ xHY@c
SortUtil.swap(data,l,r); 8CH9&N5W5t
} @,LU!#y(
while(l SortUtil.swap(data,l,r); VAe[x
`
SortUtil.swap(data,l,j); lfr^NxO U
<KE%|6oER
if((l-i)>THRESHOLD){ O2U}jHsd
stack[++top]=i; C3
BoH&
stack[++top]=l-1; Xc~BHEp
} J- 5kvQi8
if((j-l)>THRESHOLD){ %:OX^^i;
stack[++top]=l+1; 'Axe:8LA'
stack[++top]=j; HC6v#-( `{
} 9Q7342
w>'3}o(nY
} bHXoZix
file://new InsertSort().sort(data); Mf7
[@#$
insertSort(data); O:imX>|u
} BbPRPkV
/** :%+9y @%
* @param data o'Y/0hkh
*/ aadw#90
private void insertSort(int[] data) { QB;TQZ
int temp; f>&*%[fw
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7 ;2>kgf~
} :0Fc E,1
} 8tzL.P^
} (
geV(zT
%Lq}5zB
} @2TfW]6
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归并排序: gl!ht@;>ak
vgi`.hk
package org.rut.util.algorithm.support; ,q$2D,dz
>2NsBS(
import org.rut.util.algorithm.SortUtil; CjJ n
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/** J!}R>mR
* @author treeroot ScRK1
* @since 2006-2-2 .ZM0cwF
* @version 1.0 |*L/
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*/ rY)m"'puP
public class MergeSort implements SortUtil.Sort{ zR?1iV.]
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/* (non-Javadoc) v+CW([zAx#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &?k`rF9
*/ -o57"r^x
public void sort(int[] data) { <80M$a
g
int[] temp=new int[data.length]; Pt'=_^Io
mergeSort(data,temp,0,data.length-1); |RDE/
} #q8/=,3EG
{_ZbPPh;M"
private void mergeSort(int[] data,int[] temp,int l,int r){ &09G9G snQ
int mid=(l+r)/2; }{v0}-~@
if(l==r) return ; :^]FpUY
mergeSort(data,temp,l,mid); m*v@L4t(1
mergeSort(data,temp,mid+1,r); ,.&D{$1W
for(int i=l;i<=r;i++){ B9'2$s+Z;
temp=data; g^^^fKUp )
} [ *
!0DW`
int i1=l; $B OpjDV8
int i2=mid+1; 2-^['R
for(int cur=l;cur<=r;cur++){ RI BB*
if(i1==mid+1) F0'8n6zj
data[cur]=temp[i2++]; M*dou_Q
else if(i2>r) s*vtCdrE.
data[cur]=temp[i1++]; d%oHcn
else if(temp[i1] data[cur]=temp[i1++]; #c-Jo[%G
else q2M%AvR
data[cur]=temp[i2++]; 0p'g+ 2
} p&HkR^.S
} Nl{on"il
KCn#*[
} (dym*_J
oB+@05m8
改进后的归并排序: pH0MVu(W
@! jpJ}
package org.rut.util.algorithm.support; s$/Z+"f(
:oJ!9\5
import org.rut.util.algorithm.SortUtil; 2F:X:f
) 3I|6iS
/** Z
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* @author treeroot qx}*L'xB
* @since 2006-2-2 UDb
* @version 1.0 5_SxX@fW%
*/ ~bfjP2
g
public class ImprovedMergeSort implements SortUtil.Sort { 6Q`7>l.|?
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private static final int THRESHOLD = 10; ZMch2 U8
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/* ?<soX8_1
* (non-Javadoc) , D`\
RV
* weIlWxy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8HdjZ!
*/ Y+3r{OI
public void sort(int[] data) { vFK(Dx
int[] temp=new int[data.length]; `_M&zN
mergeSort(data,temp,0,data.length-1); ^2mCF
} ] -G~
_\AT_Zmy
private void mergeSort(int[] data, int[] temp, int l, int r) { `R:HMO[ow
int i, j, k; T2k# "zD
int mid = (l + r) / 2; e'dZ2;X$zo
if (l == r) \eS-wO7%
return; yzJTNLff
if ((mid - l) >= THRESHOLD) $9<P3J 1
mergeSort(data, temp, l, mid); PL*kjrLu7
else (M,*R
v
insertSort(data, l, mid - l + 1); K<"Y4O#]
if ((r - mid) > THRESHOLD) `wLMJ,@f.
mergeSort(data, temp, mid + 1, r); C?PgC~y)
else gOn^}%4.I
insertSort(data, mid + 1, r - mid); q6V\n:hKV
fngk<$lvg
for (i = l; i <= mid; i++) { zY\MzhkX,
temp = data; J ?H|"
} :JG2xtn
for (j = 1; j <= r - mid; j++) { |dk9/xdX
temp[r - j + 1] = data[j + mid]; t0o'_>*?A
} I$1~;!<
int a = temp[l]; YN5p@b=FX
int b = temp[r]; M1=y-3dW3
for (i = l, j = r, k = l; k <= r; k++) { Pqv9>N|
if (a < b) { A*+KlhT
data[k] = temp[i++]; 7a'@NgiGg
a = temp; w_^g-P[o-
} else { l|~SVk|
data[k] = temp[j--]; ewzZb*\
b = temp[j]; -$5nqaK?
} jRo4+8
} 9N{"ob
Z
} NW@guhK.
Rac4a@hZ
/** 73'.TReK
* @param data &&{_T4
* @param l nV+]jQ~o
* @param i \j3XT}
*/ P
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private void insertSort(int[] data, int start, int len) { IBe0?F #
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %4HpTx
} fW.)!EPO
} @mrGG F
} 4?9cyv4H
} a76`"(W
?g #4&z.
堆排序: (3M7 RpsL@
.jjvS
package org.rut.util.algorithm.support; [ZkK)78}k
Um\_G@
import org.rut.util.algorithm.SortUtil; "<I*ViZ
ia}V8i
/** ![#>{Q4i
* @author treeroot 9Wi+7_)
* @since 2006-2-2 ~g[<A?0=y
* @version 1.0 X:Z*7P/
*/ A('_.J=
public class HeapSort implements SortUtil.Sort{ Pf,lZU?f
evLZ<|
/* (non-Javadoc) ;bMmJ>[l-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ju8DmC5
*/ /SvB
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public void sort(int[] data) { ImG7E
w
MaxHeap h=new MaxHeap(); :&'[#%h8
h.init(data); Jg2*$gL;_
for(int i=0;i h.remove(); p(8[n^~,i
System.arraycopy(h.queue,1,data,0,data.length); &x#3N=c#
} )Bb:?!EuEH
;+Mee^E>!
private static class MaxHeap{ :W6R]y
's>./Pf
void init(int[] data){ s~)I1G
this.queue=new int[data.length+1]; jg3X6 /'
for(int i=0;i queue[++size]=data; ]tnf<5x
fixUp(size); .}4^b\
} i\yp(tE%^
} =*\(Y(0
upc-Qvk
private int size=0; "P9SW?',
7W7yjG3g
private int[] queue; iYR`|PJi
Frd` u.I
public int get() { l(j._j~p
return queue[1]; y/\0qQ/
} )N}.n2Y8W
l2ww3)Z
public void remove() { 3$#=*Zp
SortUtil.swap(queue,1,size--); /@xL {
fixDown(1); 11Y4oS
} OY'6 ~w9
file://fixdown J!"#N }[
private void fixDown(int k) { 3zsjL=ta
int j; *3s,~<''%
while ((j = k << 1) <= size) { & Do|Hw
if (j < size %26amp;%26amp; queue[j] j++; FS^ie|8{D-
if (queue[k]>queue[j]) file://不用交换 {Hr
P;)
break; !IAd.<,
SortUtil.swap(queue,j,k); u[b0MNE~
k = j; FXO{i:Zo
} JM> 4m)h#
} +|c1G[Jh
private void fixUp(int k) { Bm:N@wg
while (k > 1) { "IMq +
int j = k >> 1; ,Z aPY
if (queue[j]>queue[k]) }:9UI
break; <52)
SortUtil.swap(queue,j,k); j"wbq-n,7
k = j; em,j>qp
} whb,2=gIE
} ^ygh[.e,
+~l`rJ
} AiOz1Er
fF.qQTy;7
} 0OF ]|hH
NoD\t(@h
SortUtil: `bMwt?[*
eW.[M ?,
package org.rut.util.algorithm; a,~}G'U
8Ssk>M*
import org.rut.util.algorithm.support.BubbleSort; _;8+L\
import org.rut.util.algorithm.support.HeapSort; kp>AZVk
import org.rut.util.algorithm.support.ImprovedMergeSort; q+ )csgN
import org.rut.util.algorithm.support.ImprovedQuickSort; OYwH$5
import org.rut.util.algorithm.support.InsertSort; IP-}J$$1
import org.rut.util.algorithm.support.MergeSort; =[x
@BzH
import org.rut.util.algorithm.support.QuickSort; y
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import org.rut.util.algorithm.support.SelectionSort; VSQxlAGk@
import org.rut.util.algorithm.support.ShellSort; !Q" 3B6
86
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/** ]xf|xs
* @author treeroot L; f
* @since 2006-2-2 8j%hxAV$
* @version 1.0 n3LCQ:]Tf
*/ .X(*mmH
public class SortUtil { `z]MQdE_w
public final static int INSERT = 1; u>I;Cir4
public final static int BUBBLE = 2; "H!2{l{
public final static int SELECTION = 3; RBM(>lU:
public final static int SHELL = 4; `Z!NOC
public final static int QUICK = 5; FdVWj
5 $a
public final static int IMPROVED_QUICK = 6; )Og,VXEB
public final static int MERGE = 7; ecl$z6'c
public final static int IMPROVED_MERGE = 8; 8`j;v>2
public final static int HEAP = 9; w+Cs=!
2(Ez
H
public static void sort(int[] data) { JkM f+!
sort(data, IMPROVED_QUICK); kH10z~(e
} g6=w
MRt[
private static String[] name={ <^,5z!z}
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g,seqh%
}; *=O~TY<](
USrg,A
private static Sort[] impl=new Sort[]{ h
r!Htew4
new InsertSort(), Q<F-l.q
new BubbleSort(), .sk$ @Q
new SelectionSort(), -{A!zTw1w
new ShellSort(), Y)=89s&t
new QuickSort(), ,:!dqonn
new ImprovedQuickSort(), 8>sToNRNe
new MergeSort(), oU.LYz_
new ImprovedMergeSort(), -r!N;
s$t
new HeapSort() Jm+hDZrW
}; fem>WPvG
|<n+6
public static String toString(int algorithm){ u}7#3JfLn
return name[algorithm-1]; \HzI*|*A
} <R.5Ma
4ZK8Y[]Lv
public static void sort(int[] data, int algorithm) { xM/B"SG2
impl[algorithm-1].sort(data); P"<