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。 =Jyi9VN=&
插入排序: (1%O;D.*?{
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package org.rut.util.algorithm.support; %"[`
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import org.rut.util.algorithm.SortUtil; N[=c|frho
/** wWYo\WH'
* @author treeroot gh9Gc1tKt
* @since 2006-2-2
]v2%h X
* @version 1.0
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*/ C>NLZMT
public class InsertSort implements SortUtil.Sort{ F)8M9%g5m
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/* (non-Javadoc) g9~QNA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >DM^/EAG{
*/ "udA-;!@&
public void sort(int[] data) { t,w'w_C
int temp; bU$f4J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e^=b#!}-5:
} =|+%^)E
} m=[3"X3W1V
} "J(T?|t
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} Mq~ g+`
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冒泡排序: }Y~<|vZ
<nvzNXql
package org.rut.util.algorithm.support; 2 xE+"?0
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import org.rut.util.algorithm.SortUtil; PenkqDc}
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/** 1[]
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* @author treeroot QnJd}(yN
* @since 2006-2-2 #fVk;]u`[3
* @version 1.0 Hb&C;lk
*/ %\f<N1~*
public class BubbleSort implements SortUtil.Sort{ `RlMfd
@f!r"P]
/* (non-Javadoc) ]mR!-Fqj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \"7U,y',
*/ 'w"hG$".
public void sort(int[] data) { Xk>YiV",?
int temp; BAIR!
for(int i=0;i for(int j=data.length-1;j>i;j--){ JZup} {a
if(data[j] SortUtil.swap(data,j,j-1); 7lUnqX.
} MA,7|s
} mufXM(
} u>\u}c
} bHRRgR`,
Xmny(j)g
} xLShMv}
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选择排序: $y_P14
2{|mL`$04<
package org.rut.util.algorithm.support; C2;Hugm4
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import org.rut.util.algorithm.SortUtil; Uz_OUTFM
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/** 2cQG2N2*
* @author treeroot ,p' ;Xg6ez
* @since 2006-2-2 ubs>(\`q"
* @version 1.0 ]KM3G
*/ RI2/hrW
public class SelectionSort implements SortUtil.Sort { =#T3p9
Gd Vrl[
/* YH,u*.I^/
* (non-Javadoc) g1{2E<b5
* E#n=aY~u-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /?%1;s:'
*/
*v#Z/RrrA
public void sort(int[] data) { T+j-MR}{\
int temp; &BxZ}JH=k
for (int i = 0; i < data.length; i++) { je;|zfe]
int lowIndex = i; ^wlo;.8Y
for (int j = data.length - 1; j > i; j--) { cqG&n0zb
if (data[j] < data[lowIndex]) { /0YO`])"
lowIndex = j; :h8-y&;
} Gp0yRT.
} cT|aQM@iW
SortUtil.swap(data,i,lowIndex);
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} EkpM'j=
} KY+BXGW*
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} a}g<<{
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Shell排序: +>QD4z#
O`f[9^fN
package org.rut.util.algorithm.support; 5 \iX%w@
T9?8@p\}(
import org.rut.util.algorithm.SortUtil; !BDJU
R*O<(
/** PUEEfq!%
* @author treeroot 4Z0Y8y8)
* @since 2006-2-2 wCt!.<, .
* @version 1.0 'M35L30
*/ f{j`d&|
public class ShellSort implements SortUtil.Sort{ aL|a2+P[`q
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/* (non-Javadoc) }k0B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bScW<DZJ-
*/ /s
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public void sort(int[] data) { Zvkb=
for(int i=data.length/2;i>2;i/=2){ !@T5]( zV
for(int j=0;j insertSort(data,j,i); LMaY}m>
} :Izdj*HL;A
} GhR%f xe
insertSort(data,0,1); AP9>_0=
} 1T
8|>2m 3
"?>hQM1R
/** 'MQJt2QU9{
* @param data o&RNpP*
* @param j A5^tus/y
* @param i E*s8 nQ"
*/ c,Yd#nokC
private void insertSort(int[] data, int start, int inc) { jm0v=m7
int temp; @a}\]REn
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;<H\{w@D
} )sLXtV)nm6
} u}|+p +
} ' 1D1y'
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} ZjveXrx
fjLS_Q
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快速排序: Yu:!l>
s:*" b'
package org.rut.util.algorithm.support; !"SuE)WM
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import org.rut.util.algorithm.SortUtil; g|<$\}
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/** }3=^Ik;x
* @author treeroot }{F1Cr
* @since 2006-2-2 7gQ2dp
* @version 1.0 /3o@I5
*/ aA=7x&z@
public class QuickSort implements SortUtil.Sort{ Gg3<
}(
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/* (non-Javadoc) tr<0NV62>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N4u-tlA
*/ h 6juX'V
public void sort(int[] data) { ;oWak`]f
quickSort(data,0,data.length-1); ^v&)z,
} B qcFbY
private void quickSort(int[] data,int i,int j){ Rv|X\Wm
int pivotIndex=(i+j)/2; [4b_`L
file://swap ~ekV*,R"
SortUtil.swap(data,pivotIndex,j); eVRjU
Jj7he(!_1
int k=partition(data,i-1,j,data[j]); PDhoCAh
!
SortUtil.swap(data,k,j); I*0TI@Lo
if((k-i)>1) quickSort(data,i,k-1); kz^?!l)X0
if((j-k)>1) quickSort(data,k+1,j); 6XI$ o,{
oT*qMLdn
} [Mp8"
/** c}mWAZ=wF
* @param data :tT6V(-W
* @param i 3>%:%bP
* @param j ^gY3))2_
* @return u%AyW
*/ b2XUZ5
private int partition(int[] data, int l, int r,int pivot) { ,2]a<0m
do{ Qn`Fq,uvL
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v|wO qS
SortUtil.swap(data,l,r); .NT9dX
} -$o4WSd~
while(l SortUtil.swap(data,l,r); oNp(GQ@0
return l; Z?)=4|
} CYZ0F5+t
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} *d&+?!
8}{W.np_
改进后的快速排序: l g*eSx>M
s]2_d|Y
package org.rut.util.algorithm.support; m[D]4h9
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import org.rut.util.algorithm.SortUtil; Kq;s${ |G
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/** &'oZ]}^0
* @author treeroot
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* @since 2006-2-2 DGO\&^GT^
* @version 1.0 fl o9iifZ
*/ 4 {rj 4P?
public class ImprovedQuickSort implements SortUtil.Sort { 9;tY'32/
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private static int MAX_STACK_SIZE=4096; e<r}{=1w
private static int THRESHOLD=10; T[eb<
/* (non-Javadoc) !EB[Lutm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `l+
pk%
*/ 3pjK`"Nmz\
public void sort(int[] data) { 1hW"#>f7
int[] stack=new int[MAX_STACK_SIZE]; M7\yEi"*
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int top=-1; l G $s(
int pivot; #SqU>R
int pivotIndex,l,r; 1[ 40\ sM
PEPf=sm
stack[++top]=0; LuvRxmQ`
stack[++top]=data.length-1; ';3#t(J;
!b8.XGo
while(top>0){ UpS7>c7s
int j=stack[top--]; ^(~%'f
int i=stack[top--]; >WmTM0
8 EUc
6
pivotIndex=(i+j)/2; pvY BhTz0
pivot=data[pivotIndex]; 67A g.f6-
10{zF_9yx
SortUtil.swap(data,pivotIndex,j); :Hq#co
Ih^ziDcW
file://partition Z Z9D6+R
l=i-1; @=dwvl' W
r=j; 'oS= d
do{ l9#@4Os
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4N8(WI"4S
SortUtil.swap(data,l,r); NM4b]>
} +AYB0`X)
while(l SortUtil.swap(data,l,r); 5LzP0F
U
SortUtil.swap(data,l,j); aM|;3j1p
+\U#:gmw
if((l-i)>THRESHOLD){ DLd1Cl:"~:
stack[++top]=i; mY&(&'2T"
stack[++top]=l-1; +MyXIWmD
} # "!q_@b,D
if((j-l)>THRESHOLD){ B3'-:
stack[++top]=l+1; xL$7bw5fY
stack[++top]=j; !dGSZ|YZ
} Ft 6{g
JBG
D2]i*gs
} SYwB
#|
file://new InsertSort().sort(data); GL'l "L
insertSort(data); `%Dz 8Z
} jW;g{5X
/** <3!Q Xc
* @param data PgdHH:v)
*/ 0F9p'_C
private void insertSort(int[] data) { 4~~G
i`XE
int temp; 1Uk Gjw1J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bDjm:G
} CqR^w(
} l$ufW|
} 7~!F3WT{
nd,2EX<bE
} R3hyz~\x&
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归并排序: DdCNCXU
8 t`lRWJ
package org.rut.util.algorithm.support; 7&
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SaFNPnk=
import org.rut.util.algorithm.SortUtil; 9i+.iuE%Bu
HcCT=x7:
/** Ot;)zft
* @author treeroot /@Ec[4^=!.
* @since 2006-2-2 JS^!XB'!
* @version 1.0 `rb}"V+
*/ fVz0H1\J&
public class MergeSort implements SortUtil.Sort{ 7UsU03
s y>}2orj~
/* (non-Javadoc) 6h?)x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X=jHH=</
*/ IsiBn(1Z
public void sort(int[] data) { i,!t u
int[] temp=new int[data.length]; Kp>fOe'KW
mergeSort(data,temp,0,data.length-1); #oJ%i+V
} =[LUOOR*]
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private void mergeSort(int[] data,int[] temp,int l,int r){ eS/Au[wS
int mid=(l+r)/2; "Z)zKg
if(l==r) return ; Yht |^ =a
mergeSort(data,temp,l,mid); e[Jh7r>'
mergeSort(data,temp,mid+1,r); 22@w:
for(int i=l;i<=r;i++){ n;e.N:p
temp=data; sFw;P`
} g17 fge6%
int i1=l; O96%U$W
int i2=mid+1; "f:_(np,
for(int cur=l;cur<=r;cur++){ Ou{VDE
if(i1==mid+1) zg$NrI&
data[cur]=temp[i2++]; / "@cv{
else if(i2>r) =F09@C,
data[cur]=temp[i1++]; 2]cU:j6G
else if(temp[i1] data[cur]=temp[i1++]; J+m1d\lBu
else b}!T!IP}
data[cur]=temp[i2++]; X#Hl<d2
} `\yQn7 Oq
} Qv]>L4PO
_2X6c,
} z@[-+Q:
`JcWH_[
改进后的归并排序: ;%Kh~
;]>a7o
package org.rut.util.algorithm.support; 7M<co,"
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import org.rut.util.algorithm.SortUtil; cUr5x8<W).
_ ( $U\FW
/** 7{p6&xXx
* @author treeroot ~p
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* @since 2006-2-2 lBLL45%BIN
* @version 1.0 y.gjs<y
*/ 10CRgrZ
public class ImprovedMergeSort implements SortUtil.Sort { H18pVh
t**MthnW
private static final int THRESHOLD = 10; 5%"sv+iO
m8Rt>DY
/* $Y[C A.F
* (non-Javadoc) eC`G0.op
* k,61Va
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6*:U1{Gl)
*/ Pr3>}4M
public void sort(int[] data) { > ,x``-
int[] temp=new int[data.length]; lJt?0;gn
mergeSort(data,temp,0,data.length-1); WmuYHE U
} 4VhKV JX
Jk57| )/
private void mergeSort(int[] data, int[] temp, int l, int r) { T@d4NF#
int i, j, k; O@a7MzJ
int mid = (l + r) / 2; O+t'E9Fa
if (l == r) {Rq5=/b
return; G%>M@nYUE
if ((mid - l) >= THRESHOLD) |xrnLdng0R
mergeSort(data, temp, l, mid); \lF-]vz*
else 8aTo
TA7JA
insertSort(data, l, mid - l + 1); \f'=
if ((r - mid) > THRESHOLD) kV4,45r
mergeSort(data, temp, mid + 1, r); "] ]aF1
else ~0rvrDDg
insertSort(data, mid + 1, r - mid); 0(Hzh?t_
<sG}[:v
for (i = l; i <= mid; i++) { dst!VO:
M
temp = data; hbm#H7Y
} d(C5i8d
for (j = 1; j <= r - mid; j++) { e6Kyu*
temp[r - j + 1] = data[j + mid]; QObHW[:F
} 5ljEh -
int a = temp[l]; V`}u:t7r
int b = temp[r]; :XB^IyO-A
for (i = l, j = r, k = l; k <= r; k++) { aX?
tnDv
if (a < b) { W8M(@*
T
data[k] = temp[i++]; Z<#h$XUA
a = temp; xn anca
} else { ?N&s.
data[k] = temp[j--]; 1ezBnZJg
b = temp[j]; T3PwM2em_`
} d?aZk-|c
} ,3W,M=j)
} Y?:"nhN
<MJ-w1A
/** *9(E0"
* @param data 3-BC4y/
* @param l =d/$B!t{
* @param i P?Kg7m W
*/ XO}SPf-
private void insertSort(int[] data, int start, int len) { !UHX?<3r
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \{={{O
} w{ Pl
} av~kF
} cXK.^@du
} p
MR4]G
" : V@AT
堆排序: }brBhe8a
0B"_St}3D
package org.rut.util.algorithm.support; w!OYH1ds]_
uCc5)
import org.rut.util.algorithm.SortUtil; &.JJhX
vJe c+a
/** gUme({h&|
* @author treeroot oiQ:&$y
* @since 2006-2-2 'ql<R0g
* @version 1.0 $?uLFD
*/ oG
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6B%
public class HeapSort implements SortUtil.Sort{ "Rn@yZV
UQjYWXvi
/* (non-Javadoc) pW_mS|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *A0*.>@N
*/ `E|>K\
public void sort(int[] data) { 0@RVM|
MaxHeap h=new MaxHeap(); =b>e4I@
h.init(data); \zhCGDm1_
for(int i=0;i h.remove(); K;]Dh?
System.arraycopy(h.queue,1,data,0,data.length); U "v=XK)!
} M|7][!<G!
U5[r&Y
D
private static class MaxHeap{ py6O\` \
gps.
void init(int[] data){ # ELYPp]6
this.queue=new int[data.length+1]; %-
Ga^[
for(int i=0;i queue[++size]=data; >J{e_C2ZS
fixUp(size); zICrp
} zb.sh
} S 9;FD 3
z&z5EtFUTh
private int size=0; ,r;E[k@
p]jG
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private int[] queue; K4b2)8
g`4WisL1n
public int get() { d w'P =8d
return queue[1]; \_7'f
} '
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\vE-;,
public void remove() { v!AfIcEV
SortUtil.swap(queue,1,size--); Yn>FSq^Wp-
fixDown(1); u]P9ip"Z
} $?On,U
file://fixdown y:k7eE"
private void fixDown(int k) { 3?TUt{3g
int j; JY%l1:}G3
while ((j = k << 1) <= size) { ? 3oUkGfn
if (j < size %26amp;%26amp; queue[j] j++; J)sOne
if (queue[k]>queue[j]) file://不用交换 79B+8= K
break; C|]Zpn#{K
SortUtil.swap(queue,j,k); u $qazj
k = j; Y6a9S`o
} G6qFAepwi
} }S{VR(i`J
private void fixUp(int k) { lYU?j|n
while (k > 1) { df/7u}>9
int j = k >> 1; zUWeOR'X
if (queue[j]>queue[k]) SPnW8
break; 0>
QqsQ
SortUtil.swap(queue,j,k); 9{%/I
k = j; [-^xw1:
} =-avzuy#
} sTvw@o*
uEkGo5
} ;aH3{TS
2#Qw
} W+Ou%uv}S
:\^jIKvZ
SortUtil: W>u{JgY
sHQO*[[
package org.rut.util.algorithm; 9TEAM<b;
J\Tu=f)
import org.rut.util.algorithm.support.BubbleSort; vnqLcNB H
import org.rut.util.algorithm.support.HeapSort; 3bHB$n
import org.rut.util.algorithm.support.ImprovedMergeSort; (W#^-*$R
import org.rut.util.algorithm.support.ImprovedQuickSort; /1eeNbd
import org.rut.util.algorithm.support.InsertSort; 6 kD.
import org.rut.util.algorithm.support.MergeSort; NleMZ
import org.rut.util.algorithm.support.QuickSort; 9 $^b^It
import org.rut.util.algorithm.support.SelectionSort; eL
[.;_
import org.rut.util.algorithm.support.ShellSort; $ )6x3&]P
7_J0[C!G
/** }/jWa|)f
* @author treeroot gI/(hp3ob
* @since 2006-2-2 {uxTgX
* @version 1.0 I(j$^DA.
*/ >|mZu)HIY;
public class SortUtil { 8Ep!
public final static int INSERT = 1; +5GPU 9k
public final static int BUBBLE = 2; ~DS.b-E
public final static int SELECTION = 3; v3wq-
public final static int SHELL = 4; |g"K7XfM4
public final static int QUICK = 5; ED>P>Gg
public final static int IMPROVED_QUICK = 6; 'Jd*r(2d
public final static int MERGE = 7; kpMo7n
public final static int IMPROVED_MERGE = 8; #!P>.".
public final static int HEAP = 9; (/ -90u
sYB2{w
public static void sort(int[] data) { "oh;?gQ.
sort(data, IMPROVED_QUICK);
)!FheoR
} y s[ z[
private static String[] name={ znAo]F9=J"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <KX+j,4
}; N l^uA
o* e'D7
private static Sort[] impl=new Sort[]{ DH)E9HL
new InsertSort(), {9{PU&?(
new BubbleSort(), 77'@U(
new SelectionSort(), YR[I,j
new ShellSort(), 9xeg,#1
new QuickSort(), gOMy8w4>
new ImprovedQuickSort(), ^b
3nEcQn
new MergeSort(), DX ZZZ[#
new ImprovedMergeSort(), 24\^{3nOK
new HeapSort() cI-@nV
}; *DvQnj
i/PL!'oq
public static String toString(int algorithm){ r(rT.D&
return name[algorithm-1]; BE!l{
} SeLFubs_
T/:6Z
public static void sort(int[] data, int algorithm) { )!;20Po
impl[algorithm-1].sort(data); N|/gwcKe
} E@-5L9eJ\
gw$?&[wY
public static interface Sort { arvKJmD
public void sort(int[] data); R:[#OH.c
} H#G3CD2&
7c8`D;A-K
public static void swap(int[] data, int i, int j) { y[GqV_~?Y
int temp = data; t+M'05-U2
data = data[j]; MjbgAH-
data[j] = temp; h)s&Nqg1B
} w%(D4ldp
} k7]4TIUD*