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。 ryb81 .|
插入排序: MHA_b^7?
k:N/-P&+
package org.rut.util.algorithm.support; dfh 1^Go
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import org.rut.util.algorithm.SortUtil; B`)bo}h
/** b,>>E^wd!
* @author treeroot 3u<
ntx ><
* @since 2006-2-2 2q*wYuc
* @version 1.0 bHQ) :W
*/ bGxHzzU}
public class InsertSort implements SortUtil.Sort{ D&qJ@PR
oqzWL~
/* (non-Javadoc) \mWH8Z
}Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Qe"S>,?`
*/ }]=@Y/p
public void sort(int[] data) { Lb{.}
int temp; *&hbfsP:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NPDMv
|4
} wVX2.D'n<
} r;+a%?P
} AHHV\r
'X`W+=T$
} ?%n"{k?#
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冒泡排序: .Ad9(s
-lR7
@S
package org.rut.util.algorithm.support; 8\jsGN.$JZ
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import org.rut.util.algorithm.SortUtil; 7xfS%'=y"
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/** \s!x;nw[
* @author treeroot pF(6M3>IN
* @since 2006-2-2 :>F3es`
* @version 1.0 kdaq_O:s
*/ M`E}1WNQ?]
public class BubbleSort implements SortUtil.Sort{ 5Vai0Qfcu:
Qj$w7*U
/* (non-Javadoc) wJ"]H!r0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4um^7Ns)7
*/ 3eB)X2~
public void sort(int[] data) { ?]o(cz
int temp; L\V`ou
for(int i=0;i for(int j=data.length-1;j>i;j--){ EV7lgKM^
if(data[j] SortUtil.swap(data,j,j-1); &xp]9$
} l=x(
} E'NS$,h
} 2jxIr-a1G
} =|2F?
X#zp,7j?
} U+C^"[B
:}-?X\|\
选择排序: {WQ6=wGpS
^;tB,7:*V
package org.rut.util.algorithm.support; lS#^v#uS
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import org.rut.util.algorithm.SortUtil; =^ \?{oV
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/** 1U?5/Ja
* @author treeroot zg$ag4%Qgg
* @since 2006-2-2 #Tt*NU
* @version 1.0 ) TRUx
*/ O%haaL\
public class SelectionSort implements SortUtil.Sort { &gUa^5'#
6Nt/>[
/* 7p1B"%
* (non-Javadoc) z 7+>G/o
* 4YR{
*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N
Hn#c3o
*/ _dmG#_1
public void sort(int[] data) { eN\+
int temp; NEvNj
for (int i = 0; i < data.length; i++) { K}2G4*8S_G
int lowIndex = i; yvnDS"0<
for (int j = data.length - 1; j > i; j--) { $PAAmaigi
if (data[j] < data[lowIndex]) { z;ku*IV
lowIndex = j; _"*s x-
} /)kx`G_
} PB!XApTb
SortUtil.swap(data,i,lowIndex); @th94tk,
} :8HVq*itS
} {m@tt{%
D@:'*Z(
} _pDfPLlY&
u?H.Z
Shell排序: U3`?Z`i(
Eggu-i(rD
package org.rut.util.algorithm.support; 1
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Ob}XeN(L3
import org.rut.util.algorithm.SortUtil; R[)bGl6#
@#$(Cs*{]
/** p1K]m>Y{?
* @author treeroot 4nGt*0Er
* @since 2006-2-2 Uw!d;YQm
* @version 1.0 z(EpJK=`_
*/ 6>
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public class ShellSort implements SortUtil.Sort{ l(}MM|ka
M"bG(a(6:
/* (non-Javadoc) e`q*'u1?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU]n0)<KB
*/ @LSh=o+
public void sort(int[] data) { u[oV
Jvc
for(int i=data.length/2;i>2;i/=2){ #dD0vYT&od
for(int j=0;j insertSort(data,j,i); ~*9Ue@
} hJD3G
|E
} P}qpy\/(4
insertSort(data,0,1); _:WNk(
} x+;y0`oL
scYqU7$%T
/** 6:6A"A
* @param data O0s!3hKu
* @param j 08D:2 z1z
* @param i FSAX,Y
*/ O:GAS [O`
private void insertSort(int[] data, int start, int inc) { os&FrtDg
int temp; vxLr034
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >,h{`
} }`%ks
} TbN{ex*
} ,D]g]#Lq
T,rRE7
} x5V))~Ou
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快速排序: Yyr9Kj:
-A=3W3:C
package org.rut.util.algorithm.support; DdUw~n,
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import org.rut.util.algorithm.SortUtil; {$i>\)
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/** BG=
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* @author treeroot 9I;~P &
* @since 2006-2-2 E^br-{|{
* @version 1.0 ';My"/
Z-
*/ L F } d
public class QuickSort implements SortUtil.Sort{ TA2ETvz^
ZS;V?]\(
/* (non-Javadoc) E_DQ.!U!o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) odC"#Rb
*/ Xo]2iQy
public void sort(int[] data) { yU4mS;GX
quickSort(data,0,data.length-1); } .Z`
} /BD'{tZ]Sl
private void quickSort(int[] data,int i,int j){ gIusp917
int pivotIndex=(i+j)/2; 0@{0#W3R
file://swap @rDBK] V
SortUtil.swap(data,pivotIndex,j); k0#s{<I]E
h]+;"v6 /
int k=partition(data,i-1,j,data[j]); \E<Qi3W>*
SortUtil.swap(data,k,j); i/H;4#Bz
if((k-i)>1) quickSort(data,i,k-1); gmgri
if((j-k)>1) quickSort(data,k+1,j); >]xW{71F@
tHHJ|4C
} @"1Z;.S8V
/** .4tu{\YX
* @param data ('U TjV
* @param i 0t}v@-abU
* @param j <\O8D0.d
* @return $eG_LY 1v
*/ W5= j&&|!
private int partition(int[] data, int l, int r,int pivot) { EhM=wfGKw
do{ bgKC^Q/F
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M\
SortUtil.swap(data,l,r); -!\%##r7~
} #ojuSS3
while(l SortUtil.swap(data,l,r); ,aGIq. *v
return l; *78c2`)[
} l>`66~+s,`
}^$1<GT
} 79@CO6
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改进后的快速排序: jC>#`gD
D GcpYA.7'
package org.rut.util.algorithm.support; e&U$;sS`
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import org.rut.util.algorithm.SortUtil; D}lqd Ja
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/** OFyy!r@?
* @author treeroot )h&@}#A09
* @since 2006-2-2 (dD7"zQ
* @version 1.0 qe&B$3D|
*/ _*%K!%}l=
public class ImprovedQuickSort implements SortUtil.Sort { X[1D$1Dvw
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private static int MAX_STACK_SIZE=4096; r|DIf28MIq
private static int THRESHOLD=10; g?Nk-cg
/* (non-Javadoc) #asi%&3pP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }2"W0ZdWD
*/ R=D}([pi
public void sort(int[] data) { oH?:(S(
int[] stack=new int[MAX_STACK_SIZE]; *($,ay$&H
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int top=-1; k{{3nenAG
int pivot; KV|D]}
int pivotIndex,l,r; *fIn<Cc
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stack[++top]=0; oe2*$\?.
stack[++top]=data.length-1; u_
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gh\u@#$8
while(top>0){ ,=4,eCS
int j=stack[top--]; Z|Rc54Ct
int i=stack[top--]; s(5hFuyg
;CF:cH*
pivotIndex=(i+j)/2; D"$Y, d
pivot=data[pivotIndex]; &*ocr &
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SortUtil.swap(data,pivotIndex,j); -Yh(bS
l
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file://partition )UF'y{K}
l=i-1; 8h@L_*Kr
r=j; 9N)I\lcY
do{ Qkx*T9W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ej&.tNvq
SortUtil.swap(data,l,r); ,52 IR[I<T
} [f6BA|
while(l SortUtil.swap(data,l,r); amC)t8L?
SortUtil.swap(data,l,j); Nc{&AV8Y_v
fxoEK}TM
if((l-i)>THRESHOLD){ :i?6#_2IC
stack[++top]=i; h8 N|m0W
stack[++top]=l-1; Y
z&!0Hfd
} d7[^pN
if((j-l)>THRESHOLD){ 1G5AL2
stack[++top]=l+1; G$V=\60a-
stack[++top]=j;
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} .24z+|j
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} hk:>*B}
file://new InsertSort().sort(data);
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insertSort(data); uGb+ *tD
} d4 \
/** U'(zKqC
* @param data H@G$K@L
*/ *8?2+)5"
private void insertSort(int[] data) { L@s6u+uu
int temp; hx9t{Zi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LOcZadr
} !37I2*+4
} 03v& k
} Q c&Y|]p"
K;sC#9m
} S sW<,T
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归并排序: lW-h
@
I8)D
package org.rut.util.algorithm.support; { m~)~/z?
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import org.rut.util.algorithm.SortUtil; b/
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/** QJ(%rvn3
* @author treeroot %\sE \]K
* @since 2006-2-2 YCltS!k
* @version 1.0 O{~Xp!QQt
*/ G>0d^bx;E
public class MergeSort implements SortUtil.Sort{ \|QB;7u
hN!;Tny
/* (non-Javadoc) L +Uq4S^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T*%GeY
[
*/ UH%H9;
,$]
public void sort(int[] data) { SN ?Z7
int[] temp=new int[data.length]; 2DFsMT>X
mergeSort(data,temp,0,data.length-1); ZM -P
} :2S?|7U4
T%6JVFD
private void mergeSort(int[] data,int[] temp,int l,int r){ "X2'k@s`
int mid=(l+r)/2; ]goJ- &
if(l==r) return ; a<\n$E#q
mergeSort(data,temp,l,mid); D|)_c1g
mergeSort(data,temp,mid+1,r); |rk.t g9
for(int i=l;i<=r;i++){ 06 %-tAq:
temp=data; \UZGXk
} RVwS<g)~1
int i1=l; EMO{u
int i2=mid+1; 4sQm"XgE
for(int cur=l;cur<=r;cur++){ '=Zm[P,
if(i1==mid+1) ?<3 d
Fb
data[cur]=temp[i2++]; fb `x1Q
else if(i2>r) c:.5@eq^
data[cur]=temp[i1++]; uBt
]4d*
else if(temp[i1] data[cur]=temp[i1++]; pIC'nO_
else +vxf_*0;
data[cur]=temp[i2++]; TBPu&+3
} I1':&l^O
} AP,ZMpw
E!1\9wzM{
} ri8=u$!
0>SA90Q
改进后的归并排序: [>a3` 0M
K 'l-6JY-
package org.rut.util.algorithm.support; Mi|13[p{
dL%*;
import org.rut.util.algorithm.SortUtil; Fy<:iv0>t
*|W](id7e
/** wMR,r@}
* @author treeroot \h#aPG<yo
* @since 2006-2-2 B3&C&o.h
* @version 1.0 ddKP3}
*/ BT8)t.+pv
public class ImprovedMergeSort implements SortUtil.Sort { NO[A00m|OL
+&VY6(Zj+*
private static final int THRESHOLD = 10; rD <T
H%Vf$1/TF
/* vA_,TS#Bo
* (non-Javadoc) J?m/u6
* KMy"DVqE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ynM~&]fk#k
*/ o5&b'WUJ=
public void sort(int[] data) { 8,IF%Z+LI
int[] temp=new int[data.length]; e16H@
mergeSort(data,temp,0,data.length-1); t{iRCj
} tT)s,R%
3GE;:;8B
private void mergeSort(int[] data, int[] temp, int l, int r) { 1T|")D
int i, j, k; '9WTz(0?
int mid = (l + r) / 2; Yl&[_
l
if (l == r) d"?"(Q_8n
return; m85ZcyW1T
if ((mid - l) >= THRESHOLD) O-V]I0
mergeSort(data, temp, l, mid); Yh1nXkA!V
else Q<AOc\oO
insertSort(data, l, mid - l + 1); ~HGSA(
if ((r - mid) > THRESHOLD) SF;\*]["f
mergeSort(data, temp, mid + 1, r); zW#5 /*@
else fn
'n'X|
insertSort(data, mid + 1, r - mid); ]vf0 f,F
^$'z#ZN1
for (i = l; i <= mid; i++) { z4BU}`;b3t
temp = data; MnFrQC
} hu0z
36
for (j = 1; j <= r - mid; j++) { _J,rql@nG<
temp[r - j + 1] = data[j + mid]; .qohHJ&
} ;303fS
int a = temp[l]; cS YCMQ1ro
int b = temp[r]; 2_ u+&7
for (i = l, j = r, k = l; k <= r; k++) { Z ;rM@x
if (a < b) { H*k\C
data[k] = temp[i++]; }(u:K}8
a = temp; PRiE2Di2S
} else { kZ@UQ{>`
data[k] = temp[j--]; wg0_J<y]
b = temp[j]; 4_VgJ9@
} 5&p}^hS5
} `=hCS0F
} iYT?6Y|+
b`+yNf
/** t^MTR6y+8
* @param data AcnY6:3Y|
* @param l }G{"Mp4
* @param i Rq+7&%dy
*/ BV@q@C
private void insertSort(int[] data, int start, int len) { W*S4gPGM
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7P3/Ky@6
} .yfp-n4H
} b(|&e
} :F"IOPfU5[
} <& PU%^Ha
sS{Co8EJn
堆排序: ^wZx=kas
tM\BO0
package org.rut.util.algorithm.support; =PA?6Bm
t|oIzjKE/
import org.rut.util.algorithm.SortUtil; hzqgsmT)
m,kYE9{
/** p+?`ru
* @author treeroot Dom]w.W5
* @since 2006-2-2 ,\
1X\
* @version 1.0 KNN{2thy `
*/ I$sXbM;z=
public class HeapSort implements SortUtil.Sort{ 0/]h"5H3
D`G; C
/* (non-Javadoc) :I&y@@UG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _XP}fx7$C
*/ mYo~RXKGF
public void sort(int[] data) { L9e<hRZ$
MaxHeap h=new MaxHeap(); 3HuocwWbz
h.init(data); Jf=V<
for(int i=0;i h.remove(); u8JH~b
System.arraycopy(h.queue,1,data,0,data.length); _y6iR&&x
} UmpHae
\41/84BA
private static class MaxHeap{ .9ZK@xM&?
L
/ PAC
void init(int[] data){ c0e[vrP:
this.queue=new int[data.length+1]; V0A> +
for(int i=0;i queue[++size]=data;
d<xi/
fixUp(size); ;k@]"&t
} ^bPpcm=
} *A48shfO
o<lmU8xB=
private int size=0; +UOVD:G
4Dzg r,V
private int[] queue;
"[]oWPOj
{ly <%Q7j
public int get() { *%jtcno=Y
return queue[1]; 9xJtDdy-O
} uHacu<$=
yy/'B:g
public void remove() { Jjj;v2uSK
SortUtil.swap(queue,1,size--); Ppl :_Of
fixDown(1); j|[$P4w}U
} 3r[F1z2B
file://fixdown V[%IU'{:
private void fixDown(int k) { ,<P"\W
int j; yph@H!@
while ((j = k << 1) <= size) { aJ=)5%$6kc
if (j < size %26amp;%26amp; queue[j] j++; q0ab]g+
if (queue[k]>queue[j]) file://不用交换 cyd&bxPgj+
break; C=Fu1Hpb
SortUtil.swap(queue,j,k); k1g-%DB
k = j; l%Ke>9C
} R*cef
} W.{+0xx
private void fixUp(int k) { H~#$AD+H
while (k > 1) { U9PI#TX
&O
int j = k >> 1; 'tkQz
if (queue[j]>queue[k]) MaPhG<?
break; @6~m&$R/
SortUtil.swap(queue,j,k); ;,]4A{|
k = j; k9H}nP$F
} rIB./,
} $;=^|I4E
I8@leT\9M
} J3 oUtu
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} {I0!q"sF
&x*l{s[
SortUtil: J80&npsO
#+Bz$CO
package org.rut.util.algorithm; }+`,AC`RM
Q:
-&
import org.rut.util.algorithm.support.BubbleSort; 46
0/eW\
import org.rut.util.algorithm.support.HeapSort; gGCr~.5
import org.rut.util.algorithm.support.ImprovedMergeSort; P5G0fq7
import org.rut.util.algorithm.support.ImprovedQuickSort;
Rq2bj_ j
import org.rut.util.algorithm.support.InsertSort; h*<`ct xL
import org.rut.util.algorithm.support.MergeSort; .#tA .%
import org.rut.util.algorithm.support.QuickSort; !a V:T&6
import org.rut.util.algorithm.support.SelectionSort; N@Ap|`Ei
import org.rut.util.algorithm.support.ShellSort; T:%0i8p
D` cy.},L
/** 5IzCQqOPgX
* @author treeroot 8f~*T
* @since 2006-2-2 !W&|kvT^
* @version 1.0 U74L:&yLI
*/ 9_svtO ]P
public class SortUtil { @S~n^v,)
public final static int INSERT = 1; \cX9!lHl
public final static int BUBBLE = 2; %sZ3Gpi
public final static int SELECTION = 3; t6e6v=.Pg
public final static int SHELL = 4; Y/m-EL
public final static int QUICK = 5; )iIsnM
public final static int IMPROVED_QUICK = 6; t vW0 W
public final static int MERGE = 7; \jZmu
public final static int IMPROVED_MERGE = 8; p[|V7K'Z
public final static int HEAP = 9; >#S}J LZ
Cv>~%<
public static void sort(int[] data) { h0 %M+g
sort(data, IMPROVED_QUICK); D=D.s)ns*
} $@^\zg1n
private static String[] name={ H%=;pD>o
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5xUZeLj
}; ^f(El(w
4R01QSbd
private static Sort[] impl=new Sort[]{ fCs{%-6cP
new InsertSort(), $b^ niL
new BubbleSort(), ]I/* J^
new SelectionSort(), iSX:H;
new ShellSort(), XF3lS#pt
new QuickSort(), tycVcr\(
new ImprovedQuickSort(), 1 Cz}|#U
new MergeSort(), eUu<q/FUMj
new ImprovedMergeSort(), ~(c<M>Q8
new HeapSort() :SMf
(E 5
}; 1z,P"?Q
3h o'\Ysu/
public static String toString(int algorithm){ J1M9),
return name[algorithm-1]; 9}K
K]m6u}
} h3\(660>$
p@DVy2,EY
public static void sort(int[] data, int algorithm) { f@Ve,i
impl[algorithm-1].sort(data); \G/ZA) t
} A2PeI"y
%[L/JJbP&Z
public static interface Sort { +-V4:@
public void sort(int[] data); r_rdd}=b'
} 1!+0]_8K
3$_- 0>
public static void swap(int[] data, int i, int j) { #w^Ot*{!N
int temp = data; *r~6R
data = data[j]; SBi4i;qD
data[j] = temp; :<
]sJfN
} u1z!OofN>
} i3(5
'