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。 N2Q%/}+,
插入排序: sj\kp
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package org.rut.util.algorithm.support; VLs%;|`5D
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import org.rut.util.algorithm.SortUtil; 9a lMC
/** ;Zow C#j
* @author treeroot f<v:Tg.[
* @since 2006-2-2 J}3 7 9
* @version 1.0 bO\E)%zp
*/ a>XlkkX
public class InsertSort implements SortUtil.Sort{ $3Srr*
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/* (non-Javadoc) bf1EMai"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "fX9bh^
*/ m03]SF(#3
public void sort(int[] data) { 7z^\}&
int temp; Or*e$uMIY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P{_Xg,Z
} Ed=]RR4R
} /$,~|X;&
} EoD[,:*
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} ;^Hg\a
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冒泡排序: dE0p>4F
Vv3{jn6%
package org.rut.util.algorithm.support; + U];
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import org.rut.util.algorithm.SortUtil; `U[s d*C"
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/** ej9|Y5D"S
* @author treeroot X9oxni#
* @since 2006-2-2 {X'D07 q
* @version 1.0 3ZEV*=+T5
*/ I!OV+utF
public class BubbleSort implements SortUtil.Sort{ OD\F*Ry~
1hnw+T<<W
/* (non-Javadoc) +X &b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zr
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*/ $X%'je
public void sort(int[] data) { i`)h~V|G
int temp; ~i ImM|*0
for(int i=0;i for(int j=data.length-1;j>i;j--){ g8^YDrH
if(data[j] SortUtil.swap(data,j,j-1); qS{E+) P
} BqA
} 2AK]x`GY
} Gcz@z1a=n
} 4OOH
3O
pk,]yi,ZF
} Yf=Puy}q
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选择排序: ,
e6}p
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package org.rut.util.algorithm.support; h<8.0
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import org.rut.util.algorithm.SortUtil; q V+gQ
c
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/** ?6=u[))M&
* @author treeroot rbw5.NU
* @since 2006-2-2 JL1z8Nu
* @version 1.0 eub2[,
*/ 'ixu+.ZL/
public class SelectionSort implements SortUtil.Sort { jx7b$x]
[^4)3cj7}
/* 9X- w5$<
* (non-Javadoc) sWc_,[b
* s
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eAPNF?0yh
*/ [)E.T,fjMQ
public void sort(int[] data) { CMI V"-
int temp; Sb;=YW
1<
for (int i = 0; i < data.length; i++) { 8r46Wr7Q
int lowIndex = i; 1ae,s{|
for (int j = data.length - 1; j > i; j--) { GV"Hk E;
if (data[j] < data[lowIndex]) { VX<jg #(
lowIndex = j; -4!9cE
} l#;DO9
} 2iJ)K rw
SortUtil.swap(data,i,lowIndex); `$5 QTte
} Arzyq_ Yk
} ][IEzeI_LN
)* \N[zm
} d}2$J1`
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Shell排序: Wu!s
!iO%?nW;
package org.rut.util.algorithm.support; 'zg; *)x1/
wcI?.
import org.rut.util.algorithm.SortUtil; S);SfNh%CL
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/** E1&9( L5
* @author treeroot 4%s6 d,6"
* @since 2006-2-2 p]-\\o}
* @version 1.0 } qf=5v
*/ f=L&>X
public class ShellSort implements SortUtil.Sort{ Q*J8`J:#^R
~5Cid)Q}@o
/* (non-Javadoc) &Is}<Ew
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &*4C{N
*/ nbECEQ:|B
public void sort(int[] data) { bz1+AJG
for(int i=data.length/2;i>2;i/=2){ kU
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for(int j=0;j insertSort(data,j,i); 5@kNvi
} oXxY$x*R1
} \[57Dmo
insertSort(data,0,1); ls928
} |v6kZ0B<
3m#/1=@o
/** ^z%ShmM&LZ
* @param data "^UJC-
* @param j DN GXp5I
* @param i qz@k-Jqq
d
*/ #BZ2%\
private void insertSort(int[] data, int start, int inc) { RiPxz=kr
int temp; !)1gGXRY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M:9
6QM~
} R|&Rq(ow"
} '[z529HN
} Z?);^m|T
o;zU;pkB
} Mkj`
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快速排序: jgW-&nK!
vo]!IY
package org.rut.util.algorithm.support; `;7eu=
5x=aJl;G
import org.rut.util.algorithm.SortUtil; @5rl;C
VPh0{(O^=
/** ;Eer
* @author treeroot V8Fp1?E9S
* @since 2006-2-2 @X?7a]+;8
* @version 1.0 OABMIgX
*/ UK7pQt}9
public class QuickSort implements SortUtil.Sort{ p";5J+?(
S /kM#
/* (non-Javadoc) 4*D'zJsJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r+D ?_Lk
*/ <Pm!#)-g9
public void sort(int[] data) { b:M1P&R
quickSort(data,0,data.length-1); /Z ?$!u4I
} Bo#,)%80
private void quickSort(int[] data,int i,int j){ zJ=lNb?q
int pivotIndex=(i+j)/2; 1z6$>{FUR
file://swap wOLDHg_
SortUtil.swap(data,pivotIndex,j); jGSY$nt9
i eL7jN,'m
int k=partition(data,i-1,j,data[j]); !<8-juY
SortUtil.swap(data,k,j); T@ 4R|P&{)
if((k-i)>1) quickSort(data,i,k-1); _&wrA3@/L
if((j-k)>1) quickSort(data,k+1,j); 2d# 3LnO
Q:5^K
} ]VkM)< +
/** 6${=N}3Kw
* @param data 'e(]woe
* @param i T)Zef
* @param j '
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* @return )-s9CWJv
*/ 'xP&u<(F
private int partition(int[] data, int l, int r,int pivot) { $1E'0M`
do{ <3)k M&.B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sP'U9l
SortUtil.swap(data,l,r); Sk6B>O <:
} zJ
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while(l SortUtil.swap(data,l,r); '-l.2IUyT
return l; q^ w@l
} li37*
;(3!#4`q(]
} )z^NJ'v4(
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改进后的快速排序: 8)o%0#;0B
hE;|VSdo
package org.rut.util.algorithm.support; cp)BPg
T2ZB(B D
import org.rut.util.algorithm.SortUtil; Dx5X6 t9=
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/** @"G+kLv0
* @author treeroot =`KA@~XH4
* @since 2006-2-2 ;xl0J*r
* @version 1.0 )Ggv_mc h
*/ Pxvf"SXX
public class ImprovedQuickSort implements SortUtil.Sort { ZamOYkRX
`9*
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private static int MAX_STACK_SIZE=4096; )
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private static int THRESHOLD=10; DP8%/CV!*
/* (non-Javadoc) lS96Z3k"SB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Due@'
*/ WqJrDj~
public void sort(int[] data) { jl"su:y
int[] stack=new int[MAX_STACK_SIZE]; 9Rm\@E
[
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int top=-1; 8-PHW,1@a3
int pivot; ,gdud[&|;
int pivotIndex,l,r; rQD^O4j R
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stack[++top]=0; t}YT+S
stack[++top]=data.length-1; ,x=S)t
<5 }
while(top>0){ |kGQ~:k+P
int j=stack[top--]; 5~[m]
int i=stack[top--]; Fy$f`w_H@
B2,c_[UZ.
pivotIndex=(i+j)/2; q|g>;_
pivot=data[pivotIndex]; 8CUlE-R5
bs&>QsI?j
SortUtil.swap(data,pivotIndex,j); gkmV;0
`k6ZAOQtX
file://partition }n( ?|
l=i-1; !T#EkMM
r=j; ,
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do{ z*UgRLKZD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VTa%
SortUtil.swap(data,l,r); =/!RQQ|8o
} SJ2l6
while(l SortUtil.swap(data,l,r); b]gVZ-
SortUtil.swap(data,l,j); [jv+Of
IZ
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if((l-i)>THRESHOLD){ neQ~h4U"
stack[++top]=i; bXi!_'z$
stack[++top]=l-1; Xp.$FJ1)
} K3iQ/j~a q
if((j-l)>THRESHOLD){ W\2 ']7}e
stack[++top]=l+1; dmWCNeja.
stack[++top]=j; L54]l^ls>
} M@z_tR'3\
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} 7`f%?xVn0
file://new InsertSort().sort(data); M1icj~Jr
insertSort(data); u].7+{
} >6R3KJe
/** f`)*bx
* @param data )$ h!lAo
*/ UM/!dt}DnF
private void insertSort(int[] data) { |BUgsE
int temp; :(\JY?+w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "x vizvR
} UwxszEHC
} {
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} %Zp|1J'"
tpblm|sW
} S:XsO9:{
PXyv);#Q`
归并排序: 9Z2 1|5
_RIlGs\.
package org.rut.util.algorithm.support; !,dp/5
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import org.rut.util.algorithm.SortUtil; ):_@i
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/** L9<\vJ
* @author treeroot )3)7zulnXH
* @since 2006-2-2 J?dLI_{<
* @version 1.0 g60k R7;\
*/ zO---}[9a
public class MergeSort implements SortUtil.Sort{ sPG500=)
tS>^x
/* (non-Javadoc) LRg]'?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZSs@9ej
*/ NYr)=&)Ke.
public void sort(int[] data) { l^d' 8n
int[] temp=new int[data.length]; W7Y@]QMX
mergeSort(data,temp,0,data.length-1); b"Q8[k |d
} )|v y}Jf7
h=0a9vIXF
private void mergeSort(int[] data,int[] temp,int l,int r){ l=b!O
int mid=(l+r)/2; K2yu}F ^}
if(l==r) return ; E*u*LMm
mergeSort(data,temp,l,mid); 1f<R,>
mergeSort(data,temp,mid+1,r); aopZ-^
for(int i=l;i<=r;i++){
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temp=data; N<8\.z5:<
} jLVG=rOn
int i1=l; |$b8(g$s)
int i2=mid+1; 0cE9O9kE
for(int cur=l;cur<=r;cur++){ }L)[>
if(i1==mid+1) `hZh}K^
data[cur]=temp[i2++]; K^U="
else if(i2>r) Jz~:
data[cur]=temp[i1++]; w8w0:@0(
else if(temp[i1] data[cur]=temp[i1++]; 7;o:r$08&}
else j(Lz& *4
data[cur]=temp[i2++]; P,ueLG=
} vII{i
} ?a3wBy
9gcW;
} 1oej<67PdJ
;ND$4$
改进后的归并排序: Tc/^h4xH
!i) !|9e
package org.rut.util.algorithm.support; iR nj N
IQ@9S
import org.rut.util.algorithm.SortUtil; Yi%lWbr
RJ'[m~yl5X
/** !iKW1ks
* @author treeroot XnZ$%?$
* @since 2006-2-2 iHGVR
* @version 1.0 N:)x67,
*/ ~^1y(-cw
public class ImprovedMergeSort implements SortUtil.Sort {
22ON=NN
xrPZy*Y,
private static final int THRESHOLD = 10; ICN>kJ\;M
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P\
/* \Nt
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* (non-Javadoc) lH4Nbluc^
* EwzR4,r\M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;_I>`h"r
*/ TRGpE9i
public void sort(int[] data) { Oj c Tu
int[] temp=new int[data.length]; MW7~=T
mergeSort(data,temp,0,data.length-1); <R]m(
} T]De{nH u
+c))fPuV
private void mergeSort(int[] data, int[] temp, int l, int r) { ~#sD2b`0
int i, j, k; eP @#I^_
int mid = (l + r) / 2; .7.lr[$g
if (l == r) 1%+-}yo<
return; !i;6!w
if ((mid - l) >= THRESHOLD) { LvD\4h"
mergeSort(data, temp, l, mid); =y][j+WH
else r@4A%ql<
insertSort(data, l, mid - l + 1); Hh1_zd|
if ((r - mid) > THRESHOLD) nqo{]fn
mergeSort(data, temp, mid + 1, r); ]@#9B>v=
else *6/IO&y1a
insertSort(data, mid + 1, r - mid); \ASt&'E
#hxYB
for (i = l; i <= mid; i++) { F@u7Oel@m
temp = data; }3{eVct#|
} ?P'$Vxl
for (j = 1; j <= r - mid; j++) { =P(*j7=
temp[r - j + 1] = data[j + mid]; n5$#M
} +Uq|Yh'Q
int a = temp[l]; j}^w:W76
int b = temp[r]; <,M"kF:
for (i = l, j = r, k = l; k <= r; k++) { Y:!L
if (a < b) { 5s[nE\oaG
data[k] = temp[i++]; [[$CtqLg
a = temp; '0HOL)cIz
} else { cU6*y!}9
data[k] = temp[j--]; 7 9tE
b = temp[j]; B7 s{yb
} %zcA|SefP
} $%~JG(
} ~&<#H+O
>&(#p@#
/** :*Wq%Y=
* @param data 7zG
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* @param l 3k1e
* @param i o!tC{"g
*/ +u$l]~St\
private void insertSort(int[] data, int start, int len) { ]DVr-f
~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bT,_=7F
} pkn^K+<n,
} iXMJ1\!q\|
} G=:/v
} ~[%CUc"
cw<IL
堆排序: 3x[Cpg,
{+J{t\`
package org.rut.util.algorithm.support; ZwUBeyxS=c
w/6X9d
import org.rut.util.algorithm.SortUtil; Bv<g Vt
'7?Y+R@|L
/** Z*k(Q5&U
* @author treeroot MltO.K!
* @since 2006-2-2 dxX`\{E
* @version 1.0 wK(]E%\
*/ $lxpwO
public class HeapSort implements SortUtil.Sort{ c""&He4zp
7P<VtS
/* (non-Javadoc) S`kOtZ_N n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gzs\C{4D
*/ 99=~vNn
public void sort(int[] data) { e0P[,e*0
MaxHeap h=new MaxHeap(); 9S%5Z>
h.init(data); B7f<XBU6>
for(int i=0;i h.remove(); 5Y *4a%"
System.arraycopy(h.queue,1,data,0,data.length); LzU'6ah';5
} 1$0Kvvg[
#tV1?q
private static class MaxHeap{ CP7Fe{P
( cs
void init(int[] data){ =Kkqk
this.queue=new int[data.length+1]; NVMn7H}>
for(int i=0;i queue[++size]=data; JR]2Ray
fixUp(size); 2_wue49-l
} Eg)24C R 4
} Ph=NH8
<odi>!ViH
private int size=0; j=O+U_w
uz!8=,DFw
private int[] queue; _WZx].|A=
%
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public int get() { g4ZUh@b~
return queue[1]; UVw^t+n
} V;: k-
nq!=9r
public void remove() { D)-LZbPa
SortUtil.swap(queue,1,size--); i6#*y!3{
fixDown(1); 76w[X=Fv
} N?qETp -:
file://fixdown 0T`Qoo>u
private void fixDown(int k) { Z,)H f
int j; |qX?F`
while ((j = k << 1) <= size) { ]'pfw9"f~
if (j < size %26amp;%26amp; queue[j] j++; LLgw1 @-D
if (queue[k]>queue[j]) file://不用交换 toY_1
break; Dl/ C?Fll
SortUtil.swap(queue,j,k); gkmof^
k = j; QP'sS*saJ
} :<aGZ\R5
} I7U/={[J
private void fixUp(int k) { ^|MS2'
while (k > 1) { k1z`92"
int j = k >> 1; (1CP]5W
if (queue[j]>queue[k]) 4 ?BQ&d
break; yP]>eLTSd
SortUtil.swap(queue,j,k); vl/!w2
k = j;
vGi<" Sn7
} r%;|gIky
} sK%b16#
x_7$g<n
} |.9PwD8~VD
I;@q`Tm
} zYaFbNi
. gy:Pl]w
SortUtil: 7Q!ksp
N #v[YO`.
package org.rut.util.algorithm; #f(a,,Uu'
S5JMt;O
import org.rut.util.algorithm.support.BubbleSort; ;jgf,fbM
import org.rut.util.algorithm.support.HeapSort; q&:7R
.Ci
import org.rut.util.algorithm.support.ImprovedMergeSort; N-l`U(Z~P
import org.rut.util.algorithm.support.ImprovedQuickSort; J;>;K6pW
import org.rut.util.algorithm.support.InsertSort; >4ex5
import org.rut.util.algorithm.support.MergeSort; 5 51_;,t
import org.rut.util.algorithm.support.QuickSort; 46vC/
import org.rut.util.algorithm.support.SelectionSort; ~Y43`@3H:
import org.rut.util.algorithm.support.ShellSort; 'Qt[cW
ubB1a_7
/** =RUy4+0>F
* @author treeroot iJOoO"Ai
* @since 2006-2-2 kVLZdXn,q2
* @version 1.0 QV."ZhL5 =
*/ dkg`T#}
public class SortUtil { t!wbT79/
public final static int INSERT = 1; G>pedE\
public final static int BUBBLE = 2; y={ k7
public final static int SELECTION = 3; {#+K+!SvDX
public final static int SHELL = 4; M"]?'TMfXc
public final static int QUICK = 5; =X(N+(1~
public final static int IMPROVED_QUICK = 6; n$ByTmKxv
public final static int MERGE = 7; hg12NzbK
public final static int IMPROVED_MERGE = 8; F$>#P7ph\a
public final static int HEAP = 9; =0&XdxX
Sy?^+JdM/
public static void sort(int[] data) { zecM|S _
sort(data, IMPROVED_QUICK); 53/$8=
} >CG;df<~
private static String[] name={ 4+qo=i
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qh bagw~
}; 4qDa:D"5
.z
CkB86
private static Sort[] impl=new Sort[]{ 8;~,jZ
s
new InsertSort(), MuO(%.H
new BubbleSort(), ,6y.wNb :F
new SelectionSort(), vy
[7I8f{
new ShellSort(), a%y*e+oM
new QuickSort(), VB^1wm
new ImprovedQuickSort(), H1~9f{
new MergeSort(), D0\*WK$
new ImprovedMergeSort(), 4WlBQ<5
new HeapSort() Fu?_<G%Ynp
}; aIT0t0.
@6_w{6:b
public static String toString(int algorithm){ V#599-
return name[algorithm-1]; cl23y}J_?
} Hj-n
'XZ
\xOYa
public static void sort(int[] data, int algorithm) { e}gGl<((g
impl[algorithm-1].sort(data); g:^Hex?Yfd
} <qoc)p=__
1=_?Wg:
public static interface Sort { 'D+njxCk.A
public void sort(int[] data); (eT9N_W
} `j2|aX
%Z*
<YG 42,N
public static void swap(int[] data, int i, int j) { UM1h[#?&V)
int temp = data; uf)!SxT
data = data[j]; FKtCUq,:
data[j] = temp; ktY
} nKwOSGPQt
} ) WkN34Q