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。 2%%U)|39mB
插入排序: _4#psxl[M
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package org.rut.util.algorithm.support; ]OUOL/J
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import org.rut.util.algorithm.SortUtil; I8>1RXz
/** `\uv+^x{
* @author treeroot pKlT.<X7
* @since 2006-2-2 S|h
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* @version 1.0 z4UQ:z@
*/
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public class InsertSort implements SortUtil.Sort{ QlXF:Gx"=
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/* (non-Javadoc) gV>\lMc[-%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i-W2!;G
*/ $1
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public void sort(int[] data) { .F|WQ7Mu
int temp; 8LKZ3Y|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lLf01sa4
} ]/naH#8G
} J}u1\Id%
} 7ZnQ] ?
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} a2FIFWvW
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冒泡排序: WU@,1.F:
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package org.rut.util.algorithm.support; Nr+1N83S}
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import org.rut.util.algorithm.SortUtil; ^%@.Vvz<
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/** gJv^v`X
* @author treeroot {vlh,0~
* @since 2006-2-2 Oz7v
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* @version 1.0 1 niTkop
*/ #-,`4x$m|
public class BubbleSort implements SortUtil.Sort{ $B/cj^3
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/* (non-Javadoc) RuuU}XQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wfzb:Aig`
*/ D:,<9 %A
public void sort(int[] data) { j!H?dnE||
int temp; 0g)mf6}o
for(int i=0;i for(int j=data.length-1;j>i;j--){ g?M69~G$:x
if(data[j] SortUtil.swap(data,j,j-1); r!uAofIi_
} &|;!St]!M
} GTe9@d
} %;J`dM
} sva$@y7b
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} Ut =y`]F
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选择排序: GUXX|W[6
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package org.rut.util.algorithm.support; F,:VL*.5kJ
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import org.rut.util.algorithm.SortUtil; +w5?{J
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/** }@4*0_g"Aw
* @author treeroot S22 ;g
* @since 2006-2-2 1vb0G;a;|
* @version 1.0 lEs/_f3;A
*/ 3!x)LUWfWY
public class SelectionSort implements SortUtil.Sort { )9->]U@
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/* LlqhZetS
* (non-Javadoc) .&dcJh*O+
* p}uw-$O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =;T[2:JUu
*/ p(>'4#|qy
public void sort(int[] data) { ^ j7pF.j
int temp; {BU,kjv1g
for (int i = 0; i < data.length; i++) { Nh%8;
int lowIndex = i; v~3q4P
for (int j = data.length - 1; j > i; j--) { }J`Gm
if (data[j] < data[lowIndex]) { j!rz@Y3
lowIndex = j; Hua8/:![+
} h,g~J-x`|
} g!uhy}
SortUtil.swap(data,i,lowIndex); +`FY
} (PF (,B
} Af~AE2b3"
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} E{J;-+t
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Shell排序: <s>SnOD
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package org.rut.util.algorithm.support; ?9"glzxr
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import org.rut.util.algorithm.SortUtil; {`> x"Y5
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/** =JkSq J)?
* @author treeroot T /uu='3
* @since 2006-2-2 QWEK;kUa@
* @version 1.0 :08UeEy
*/ V96BtVsB
public class ShellSort implements SortUtil.Sort{ W0k_"uI
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/* (non-Javadoc) }$ der
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e{=$4F
*/ |HLh?AcX
public void sort(int[] data) { C{-pVuhK+
for(int i=data.length/2;i>2;i/=2){ 1+'3{m \5T
for(int j=0;j insertSort(data,j,i); +zvK/Fj2q
} 04:Dbt~=?p
} 4Ki'r&L\
insertSort(data,0,1); L<n_}ucA
} QB3AL;7
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/** -_+0[Nb.
* @param data ORNE>6J
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* @param j y- YYDEl
* @param i whshjl?a
*/ 2Xosj(H
private void insertSort(int[] data, int start, int inc) { _4+1c5Q!
int temp; ~n?U{
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,7aqrg
} 5VfP@{
} i2DR}%U
} )? xg=o/?
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} FB""^IC?W
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快速排序: u|E,Wy1
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package org.rut.util.algorithm.support; iBCM?RiG
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import org.rut.util.algorithm.SortUtil; ^*W3{eyi(L
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/** -kO=pYP*O
* @author treeroot 2mRso.Ah
* @since 2006-2-2 0)Z7U$
* @version 1.0 #AHIlUH"m
*/ +_<#8v
public class QuickSort implements SortUtil.Sort{ zI(Pti
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/* (non-Javadoc) T!n<ya!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S}<(9@]z
*/ Q]\xO/
public void sort(int[] data) { 'EQAG' YV
quickSort(data,0,data.length-1); shD$,!
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} |Z<adOg
private void quickSort(int[] data,int i,int j){ b$BUo8O}
int pivotIndex=(i+j)/2; V}( "8L
file://swap S9.jc@#.`
SortUtil.swap(data,pivotIndex,j); 7W*OyH^
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int k=partition(data,i-1,j,data[j]); D4G{= Y}G
SortUtil.swap(data,k,j); C9fJLCufC
if((k-i)>1) quickSort(data,i,k-1); FUQT ,7CA
if((j-k)>1) quickSort(data,k+1,j); `
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} 8/=2N
/** eK`tFs,u
* @param data wZ\0<skU
* @param i 0Bll6Rd
* @param j $]_=B Jyu
* @return
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*/ 4#o` -vcW
private int partition(int[] data, int l, int r,int pivot) { ji1A>jepF
do{ 7M4iBk4I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P++gR@
SortUtil.swap(data,l,r); :F_U^pyG
} Xd4~N:
while(l SortUtil.swap(data,l,r); N.fIg
return l; uaS?y1:c
} V{8mx70
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} >uVG]
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改进后的快速排序: __a9}m4i7x
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package org.rut.util.algorithm.support; aW"BN 5eM>
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import org.rut.util.algorithm.SortUtil; ]UNmhF!W>u
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/** Q<M>+U;t
* @author treeroot u}pLO9V"`
* @since 2006-2-2 D =3NI
* @version 1.0 R_-.:n%.z
*/ %rf<YZ.\
public class ImprovedQuickSort implements SortUtil.Sort { C 9DRVkjj
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private static int MAX_STACK_SIZE=4096; |{$Vk%cUE
private static int THRESHOLD=10; R8mL|Vb|
/* (non-Javadoc) H6L`239u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {3l]/X3
*/ :/u
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public void sort(int[] data) { #jnb6v=5v
int[] stack=new int[MAX_STACK_SIZE]; cc@y
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int top=-1; n|8fdiK#}
int pivot; /m%;wH|6%
int pivotIndex,l,r; 4kIy4x'*
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stack[++top]=0; 1vX97n<}
stack[++top]=data.length-1; YM5;mPR
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while(top>0){ F&ux9zP
int j=stack[top--]; -ohqw+D
int i=stack[top--]; 1%>/%eyn5
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pivotIndex=(i+j)/2; VLR W,lR9O
pivot=data[pivotIndex]; Wu:evaZ:i
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SortUtil.swap(data,pivotIndex,j); u-8,9
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file://partition pJV<#<#Z
l=i-1; ;0 ,-ywK
r=j; emTqbO
do{ Qv#]T,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BYRf MtT@+
SortUtil.swap(data,l,r); SI-s:%O
} M-eX>}CDm
while(l SortUtil.swap(data,l,r); -2f_e3jF
SortUtil.swap(data,l,j); `Os@/S
) !3sB{H
if((l-i)>THRESHOLD){ F6yMk%
stack[++top]=i; h/5.>[VwDh
stack[++top]=l-1; f`T#=6C4|
} :
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if((j-l)>THRESHOLD){ 6m?}oMz
stack[++top]=l+1; r q>@0i
stack[++top]=j; QO~!S_FRH
} h^cM#L^B
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} g%Eb{~v
file://new InsertSort().sort(data); 0ZTT^2R
insertSort(data); y%f'7YZ4
} T$!.
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/** af.yC[
* @param data 67^?v)|
*/ N_wB
private void insertSort(int[] data) { WS4Ja$*
int temp; L2+~I<|>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }qxwNmx
} 6V W&An[6r
} +hGr2%*0f
} ;~F&b:CyG
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} g6MK~JG$?h
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归并排序: `bNY[Gv>)
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package org.rut.util.algorithm.support; bs/Vn'CE
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import org.rut.util.algorithm.SortUtil; uS;N&6;:
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/** F@UbUm2o
* @author treeroot jhg0H2C8
* @since 2006-2-2 N
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* @version 1.0 WTbq)D(&[_
*/ E&9BeU
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public class MergeSort implements SortUtil.Sort{ g{RVxGE7
VB o=*gn,$
/* (non-Javadoc) C8ek{o)%W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DgW*Br8<
*/ zb.dVK`7N-
public void sort(int[] data) { d#NG]V/
int[] temp=new int[data.length]; },+ &y^
mergeSort(data,temp,0,data.length-1); o !bV;]
} j"1#n? 0
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private void mergeSort(int[] data,int[] temp,int l,int r){ H[S[ y
int mid=(l+r)/2; n
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if(l==r) return ; ir!/{IQx
mergeSort(data,temp,l,mid); 4d-f6iiFV
mergeSort(data,temp,mid+1,r); ~lib~Y'-
for(int i=l;i<=r;i++){ it77x3Mm
F
temp=data; JS$ojL^
} Cl&YN}t5
int i1=l; gaV>WF
int i2=mid+1; wl7G6Y2
for(int cur=l;cur<=r;cur++){ }LeizbU
if(i1==mid+1) wwUa+6?
data[cur]=temp[i2++]; Ce_k&[AJF
else if(i2>r) _Oc5g5_{
data[cur]=temp[i1++]; KDxqz$14-
else if(temp[i1] data[cur]=temp[i1++]; ?h\fwF3
else mBN+c9n/
data[cur]=temp[i2++]; =S#9\W&