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。 1dH|/9
插入排序: 8w0~2-v.?V
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package org.rut.util.algorithm.support; Rlq7.2cP
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import org.rut.util.algorithm.SortUtil; SQodk:1)
/** 384n1?
* @author treeroot DH(<{ #u
* @since 2006-2-2 {2\Y%Y'}*
* @version 1.0 R<|\Z@z
*/ ].d2C J'
public class InsertSort implements SortUtil.Sort{ 1NZ"\9=U
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/* (non-Javadoc) n$iX6Cd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =?i?-6M
*/ kCBtK?g
public void sort(int[] data) { #AD_EN9
int temp; T+Oqd\05.+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d ^bSV4
} HbTVuf o
} OH`a3E{e
} \6b~$\~B
u$nzpw0=H
} 6!<I'M'[e
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冒泡排序: [&lK.?V)
il0K ^i
package org.rut.util.algorithm.support; O. * 0;5
(v]%kXy/G
import org.rut.util.algorithm.SortUtil; 3?93Pj3oPt
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/** '/\
* @author treeroot `+H=3`}X
* @since 2006-2-2 A7p4M?09
* @version 1.0 jv)+qmqo!
*/ 9CDei~
public class BubbleSort implements SortUtil.Sort{ %>|FJ
6= ?0&Bx&
/* (non-Javadoc) ;_}pIO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2#wnJdr6E
*/ bWe2z~dP
public void sort(int[] data) { w\buQ6pR)
int temp; (.J/Ql0Y
for(int i=0;i for(int j=data.length-1;j>i;j--){ V DFgu
if(data[j] SortUtil.swap(data,j,j-1); ^C>kmo3J
} !:(+#
} qGinlE&\
} ~D52b1f
} P\U<,f
qt8Y3:=8l
} j7I=2xnTWu
R7::f\I
选择排序: 4_#$k{
v?8WQNy
package org.rut.util.algorithm.support; Ob0sB@
{oQs*`=l>
import org.rut.util.algorithm.SortUtil; 8}QM~&&.
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/** fc#9e9R
* @author treeroot mGT('iTM4
* @since 2006-2-2 U:7h>Z0W
* @version 1.0 +){^HC\7h
*/ l+ }=D@l
public class SelectionSort implements SortUtil.Sort { -E-#@s
N_Us6X
/* G]lGoa}]`u
* (non-Javadoc) w2LnY1A
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :jiEn
y
*/ Fis!MMh.$
public void sort(int[] data) { n
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int temp; dSDZMB sd
for (int i = 0; i < data.length; i++) { u8f\)m
int lowIndex = i; \0\ O/^W0
for (int j = data.length - 1; j > i; j--) { O& Y;/$w
if (data[j] < data[lowIndex]) { %ZVYgtk;*
lowIndex = j; WjVBz
} JVAyiNIH>M
} +Mj6.X
SortUtil.swap(data,i,lowIndex); ; lMv xt:
} J0sD?V|{1~
} z{XB_j6\=
/@LkH$
} ing'' _
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Shell排序: /|EdpHx0
4D65VgVDM
package org.rut.util.algorithm.support; a%#UF@I
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import org.rut.util.algorithm.SortUtil; -` ]9o3E7H
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/** a;o0#I#Si
* @author treeroot )%C.IZ_s2
* @since 2006-2-2 4$-R|@,|_
* @version 1.0 I;4quFBlMu
*/ gawY{Jr8I
public class ShellSort implements SortUtil.Sort{ ( 5LCy?-6
P1F-Wy1
/* (non-Javadoc) -}7$;QK&a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PT>b%7Of
*/ @A[)\E1
public void sort(int[] data) { %. 1/#{
for(int i=data.length/2;i>2;i/=2){ v
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for(int j=0;j insertSort(data,j,i); n_kwtWX(
} \8CCa(H
} .@ H:P
insertSort(data,0,1); pGie!2T E
} '54\!yQ<{
/-M:6
/** Dk
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* @param data #`Su3~T=S
* @param j eWH0zswG
* @param i ~WA@YjQ]
*/ 4Kj.o
private void insertSort(int[] data, int start, int inc) { c=sV"r?
int temp; *Y> w0k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -2.7Z`*(
} jKUEs75]
} =~:IiK/#
} {B+}LL!
3kxo1eb
} Sca"LaW1
7Kw'Y8
快速排序: 0i~U(qoI
l7QxngWw
package org.rut.util.algorithm.support; J|WE&5'
+n1!xv]
import org.rut.util.algorithm.SortUtil; y
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':.Hz]]/A
/** :1 +Aj
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* @author treeroot @.;+WQE
* @since 2006-2-2 {!Qu(%
* @version 1.0 ^4sfVpD2!
*/ fD!c t; UK
public class QuickSort implements SortUtil.Sort{ G)vNMl
Nj9A-*0g6N
/* (non-Javadoc) FC0fe_U(F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _c-3eQ1
*/ g*$2qKm
public void sort(int[] data) { EL,k z8
quickSort(data,0,data.length-1); 3Gs\Q{O:
} #*h\U]=VS
private void quickSort(int[] data,int i,int j){ +Tum K.
int pivotIndex=(i+j)/2; SaPE 1^}
file://swap TgkVd]4%
SortUtil.swap(data,pivotIndex,j); 6]7csOE
.SC*! ,
int k=partition(data,i-1,j,data[j]); 5FZw
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SortUtil.swap(data,k,j); 'jt7H{M
if((k-i)>1) quickSort(data,i,k-1); uw mN!!TS
if((j-k)>1) quickSort(data,k+1,j); '5h`="
aUw-P{zp%
} :T-DxP/
/** +bumWOQ'
* @param data }40T'y
* @param i TOwqr T/
* @param j w)dnmrKDZg
* @return uj.i(Us
*/ P%|~Ni_BTX
private int partition(int[] data, int l, int r,int pivot) { 2cCiHEL #
do{ ]N'3jf`W
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UhH#>2r_
SortUtil.swap(data,l,r); HA'~1$#z
} &y!?R$?b
while(l SortUtil.swap(data,l,r); kmC@\xTp
return l; B4.:
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} ;UQza ]i
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} H<d~AurX)J
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改进后的快速排序: HzTmNm)
,AnD%#o
package org.rut.util.algorithm.support; 6b|<$Je9
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import org.rut.util.algorithm.SortUtil; 5Zq
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/** >.meecE?Q
* @author treeroot fZiAl7b!
* @since 2006-2-2 J?O0ixU
* @version 1.0 01r%K@ xX\
*/ (p>|e\(]0
public class ImprovedQuickSort implements SortUtil.Sort { R XCn;nM4
Znb={hh
private static int MAX_STACK_SIZE=4096; $d*9]M4
private static int THRESHOLD=10; "\wMs
/* (non-Javadoc) kY)Vr3uGA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i$NlS}W
*/ b~aM=71
public void sort(int[] data) { ](Fey0@
int[] stack=new int[MAX_STACK_SIZE]; /DAR'9@h
,@ '^3u
int top=-1; qb? <u
int pivot; !
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int pivotIndex,l,r; kX8C'D4 gX
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stack[++top]=0; hl1IG
!
stack[++top]=data.length-1; E@GYl85fI
"# *W#ohVA
while(top>0){ &N^j
}^ Z
int j=stack[top--]; w<(ubR %$
int i=stack[top--]; uSfHlN4l
!1l~UB_
pivotIndex=(i+j)/2; httywa^
pivot=data[pivotIndex]; v]k-xn|$j
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SortUtil.swap(data,pivotIndex,j); L-|l$Ti"
G^.N$wcv
file://partition IR-n:z
l=i-1; b1C)@gl !Z
r=j; [lzd'
do{ ,iV%{*p]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @f-:C+(Nsg
SortUtil.swap(data,l,r); w9'>&W8T
} "<iH8MzZ
while(l SortUtil.swap(data,l,r); *qzdt^[ xo
SortUtil.swap(data,l,j); zxn|]PbS
.~i|kc]Ue
if((l-i)>THRESHOLD){ Go%Z^pF3CO
stack[++top]=i; VM$n|[C~
stack[++top]=l-1; $yx\2
} Fx^wV^q3
if((j-l)>THRESHOLD){ YPGM||
stack[++top]=l+1; ji ?Hw
stack[++top]=j; %n|
} :9hGL
(4FVemgy
} ei5YxV6I
file://new InsertSort().sort(data); 6*Z7JiQ0
insertSort(data); 2F2Hl
} DZqPCMz)^
/** k!Yc_ZB:*l
* @param data pA!-spgX
*/ RRja{*R
private void insertSort(int[] data) { Kn^+kHh:
int temp; ^*AI19w!Ys
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U<'N=#A
J
} TsFhrtnx&X
} SW9
C
8Q
} {b!{~q
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a!Y
} <@Q27oEuA
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归并排序: E+\?ptw
&'u|^d
package org.rut.util.algorithm.support; it}h8:^<
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import org.rut.util.algorithm.SortUtil; 27!FB@k-
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/** f\
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* @author treeroot k{2Gq1S{
* @since 2006-2-2 33~MP;
* @version 1.0 /"e@rnn
*/ s*PKr6X+
public class MergeSort implements SortUtil.Sort{ <1*kXTN(
Tf3CyH!k
/* (non-Javadoc) =f~<*wQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aBC5?V*e%
*/ 4v_Ac;2m&
public void sort(int[] data) { RZHfT0*jL
int[] temp=new int[data.length]; s~7a-J
mergeSort(data,temp,0,data.length-1); DXf
} "1,*6(;:
@\?HlGWEf
private void mergeSort(int[] data,int[] temp,int l,int r){ m.+h@
int mid=(l+r)/2; jG1(Oe;#
if(l==r) return ; hNXZL>6
mergeSort(data,temp,l,mid); z@`o(gh
mergeSort(data,temp,mid+1,r); ^os_j39N9
for(int i=l;i<=r;i++){ {dF@Vg_n
temp=data; L -Q8iFW'
} #zP-,2!r
int i1=l; @V
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int i2=mid+1; $+80V{J#
for(int cur=l;cur<=r;cur++){ 7{<v$g$
if(i1==mid+1) 0)|Z7c&
data[cur]=temp[i2++]; ,8384'
else if(i2>r) RL` jaS?V
data[cur]=temp[i1++]; Un]wP`
else if(temp[i1] data[cur]=temp[i1++]; ! t!4CY
else 2/+~h(Cc
data[cur]=temp[i2++]; {<{VJGY7T
} 8-<F4^i_i
} S})f`X9_}
'#c#.O
} .'`aX
7{\
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改进后的归并排序: ;y(;7n_ a
48 -j
package org.rut.util.algorithm.support; ;Ci:d*
OP\jO DX
import org.rut.util.algorithm.SortUtil; \lg
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pEwo}NS*H
/** 1KUjb@"
* @author treeroot bo#xqSGQ
* @since 2006-2-2 ir6aV|ea!
* @version 1.0 vN(~}gOd\
*/ WHx#;
public class ImprovedMergeSort implements SortUtil.Sort { vEfj3+e
K3mP 6Z#2
private static final int THRESHOLD = 10; ! \s}A7
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/* IFBt#]l0
* (non-Javadoc) H@-q NjM
* ,
>WH)+a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LZ)g&A(j?
*/ x:-NTW
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public void sort(int[] data) { :Fhk$?/r
int[] temp=new int[data.length]; s={>{,E
mergeSort(data,temp,0,data.length-1); KH,f'`
} #;8)UNc)}
VKPEoy8H
private void mergeSort(int[] data, int[] temp, int l, int r) { wa,`BAKJ+F
int i, j, k; 3u
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int mid = (l + r) / 2; S
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if (l == r) K1X-<5]{
return; -G>J
if ((mid - l) >= THRESHOLD) PV\J]
|d,%
mergeSort(data, temp, l, mid); {-I+
else j)/Vtf
insertSort(data, l, mid - l + 1); oOprzxf"+Z
if ((r - mid) > THRESHOLD) *m]Y6
mergeSort(data, temp, mid + 1, r); {*;8`+R&
else K\ Wzh;
insertSort(data, mid + 1, r - mid); bYLYJ`hH<R
x"Ll/E)\v]
for (i = l; i <= mid; i++) { Pt85q?- >
temp = data; _xAru9=n^
} kL zjK]4 *
for (j = 1; j <= r - mid; j++) { xp1/@Pw?
temp[r - j + 1] = data[j + mid]; (^W}uDPCB
} cS Lj\'`b
int a = temp[l]; q5r7KYH{
int b = temp[r]; q+[ )i6!?
for (i = l, j = r, k = l; k <= r; k++) { .=YV
if (a < b) { Mo@{1K/9
data[k] = temp[i++]; hYyIC:PXR
a = temp; K3vZ42n
} else { [GbrKq(
data[k] = temp[j--]; /
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b = temp[j]; 1
K}gX>F
} ~Q=;L>Qd
} 97 SS0J
} 5@l5exuG*m
#CLjQJ
/** s2L]H
* @param data 5 v.&|[\k
* @param l A'CD,R+gR
* @param i 3]1 !g6
*/ '?$@hqQn
private void insertSort(int[] data, int start, int len) { |?jgjn&RQ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `<>#;%
} }o]}R#|
} A)~oD_ooQ
} ;F1y!h67<
} xppnBnu$7
;S^"Y:7)
堆排序: $G <r2lPy
[<i3l'V/[
package org.rut.util.algorithm.support; 5 `TMqrk
M>=@Z*u/+
import org.rut.util.algorithm.SortUtil; ZzK^bNx)0
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/** zU[o_[+7^
* @author treeroot dlyGgaV*X
* @since 2006-2-2 kT
* @version 1.0 *b~8`Opa`
*/ 8r>\scS
public class HeapSort implements SortUtil.Sort{ jhz*Y}MX
)j'Qi^;(D
/* (non-Javadoc) )}$rgYKJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ruq;:5u
*/ 3KqRw (BK
public void sort(int[] data) { !DA4q3-U>>
MaxHeap h=new MaxHeap(); q;R&valn
h.init(data); @G]*]rkKb
for(int i=0;i h.remove(); 2Rys:$
System.arraycopy(h.queue,1,data,0,data.length); enxb
pq#
} gWjYS#D
Vc(kw7
private static class MaxHeap{ _fgsHx>l7
(soTkH:#
void init(int[] data){ c^"4l
9w
this.queue=new int[data.length+1]; nv0D4 t
for(int i=0;i queue[++size]=data; 851BOkRal4
fixUp(size); q/w5Dx|:
} `dF~'
} 6|Dtx5
"r
[ {"x{;
private int size=0; R%LFFMVn
&b~X&{3,
private int[] queue; cb'Ya_
s8:epcL`A
public int get() { Msvs98LvW
return queue[1]; ai/]E6r
} i+QVs_jW
_Cf:\Xs
m
public void remove() { nGTGX
SortUtil.swap(queue,1,size--); Ax|'uvVAPT
fixDown(1); I`xC0ZUKj
} [x?9<#T
file://fixdown ":e6s co
private void fixDown(int k) { '/D2d
int j; BbFLT@W4
while ((j = k << 1) <= size) { ?.ObHV*k
if (j < size %26amp;%26amp; queue[j] j++; $#%R_G]
if (queue[k]>queue[j]) file://不用交换 iiuT:r
break; x]Nx,tt
SortUtil.swap(queue,j,k); 2OI 0B\
k = j; 0 -M i
q
} xc'uCbH
} VWd`06'BN'
private void fixUp(int k) { 9T2_2
while (k > 1) { f@9XSZ<.71
int j = k >> 1; 1Q^u#m3
if (queue[j]>queue[k]) nT4Ryld
break; i.K!;E>
SortUtil.swap(queue,j,k); r25VcY
k = j; 3bd`q
$
} Z;u3G4XlF
} w?3ww7yf`
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} &RuTq6)r
$uwz`N:
} b'FTyi
m0W3pf
SortUtil: lZkJ<*z#
?t}s3P!Q3w
package org.rut.util.algorithm; (VkO[5j
r1.zURY
import org.rut.util.algorithm.support.BubbleSort; =>o !
import org.rut.util.algorithm.support.HeapSort; |gk4X%o6
import org.rut.util.algorithm.support.ImprovedMergeSort; LB.B w
import org.rut.util.algorithm.support.ImprovedQuickSort; +F,])p4,]i
import org.rut.util.algorithm.support.InsertSort; i,;a( Sy4
import org.rut.util.algorithm.support.MergeSort; SG~HzQ\%
import org.rut.util.algorithm.support.QuickSort; TXd6o=
import org.rut.util.algorithm.support.SelectionSort; V_^pPBa
import org.rut.util.algorithm.support.ShellSort; [T'[7Z
c#?~1@=
/** Bk~lM'
* @author treeroot %H_-`A`
* @since 2006-2-2 qfAnMBM1@
* @version 1.0 O,+9r_Gh
*/ o3GZcH?
public class SortUtil { Nv0a]Am
public final static int INSERT = 1; PGZe'r1E9
public final static int BUBBLE = 2; iVVR$uzhH
public final static int SELECTION = 3; {&Rz>JK
public final static int SHELL = 4; `X()"Qw
public final static int QUICK = 5; 'b [O-6v
public final static int IMPROVED_QUICK = 6; q$H@W.f
public final static int MERGE = 7; 2ZbSdaM=
public final static int IMPROVED_MERGE = 8; :%28*fl
public final static int HEAP = 9; jL)Y'
lpB:lRM
public static void sort(int[] data) { GaJE(N
sort(data, IMPROVED_QUICK); G.N`
} f `b6E J
private static String[] name={ `CL\-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d@8:f
}; vN]_/T+
R:'&>.AUw
private static Sort[] impl=new Sort[]{ D5Jg(-
new InsertSort(), V2;Nv\J\
new BubbleSort(), %PPy0RZ^
new SelectionSort(), ncVt(!c,e
new ShellSort(), ,'<NyA><
new QuickSort(), U0|bKU
new ImprovedQuickSort(), #PC*l\
)
new MergeSort(), ())_4 <
new ImprovedMergeSort(), !Dc;R+Ir0!
new HeapSort() I"8Z'<|/\q
}; ~rq:I<5
Xmb##:
public static String toString(int algorithm){ Jp8,s%
return name[algorithm-1]; I@Yk &aU
} B"88 .U}$
iYdg1
public static void sort(int[] data, int algorithm) { ;$ ]a.9
-
impl[algorithm-1].sort(data); Hit)mwfYE
} z#n+iC$9
SEu:31k{o
public static interface Sort { SN}3
public void sort(int[] data); %k"hzjXAw
} wT3D9N.
FyXO @yF
public static void swap(int[] data, int i, int j) { 0>;[EFL
int temp = data; 7)> L#(N
data = data[j]; wpNb/U
data[j] = temp; 8{%&P%vf
} b;vVlIG
} >$3 =yw%