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。 |h^G $guw
插入排序: ?FY@fO?es
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package org.rut.util.algorithm.support; 3IU$
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import org.rut.util.algorithm.SortUtil; K*HVn2OV
/** &|'Kut?8
* @author treeroot 32iWYN
* @since 2006-2-2 J#Ne:Aj_
* @version 1.0 PoBukOv
*/ }OX>(
public class InsertSort implements SortUtil.Sort{ G(7\<x:
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/* (non-Javadoc) XDrlJvrPL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WoClTb>F
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public void sort(int[] data) { D:6x*+jah)
int temp; 2t]! {L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mTXNHvv
} \DcC1W
} ys.!S.k+
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冒泡排序: R+ #.bQg
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package org.rut.util.algorithm.support; Ow($\,
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import org.rut.util.algorithm.SortUtil; Be14$7r
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/** gk_X u
* @author treeroot &>) `P[x
* @since 2006-2-2 A\PV@w%Ai
* @version 1.0 R^u^y{ohr
*/ V"2AN3~&
public class BubbleSort implements SortUtil.Sort{ H,4,~lv|
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/* (non-Javadoc) #r:Kg&W2FO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :hl}Zn~jt
*/ 9/X v&<Tn
public void sort(int[] data) { fbx;-He!
int temp; -fSKJo#}|
for(int i=0;i for(int j=data.length-1;j>i;j--){ M*T# 5
if(data[j] SortUtil.swap(data,j,j-1); P`IMvOs&
} 2)I'5?I
} G.q^Zd#.T
} Fb<\(#t
} {7pE9R 5
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} L/ICFa.G
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选择排序: 2Z IpzH/8
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package org.rut.util.algorithm.support; ! 4^L $
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import org.rut.util.algorithm.SortUtil; C)3$";$5)
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/** E*T84Jh6
* @author treeroot `bt)'ERO%#
* @since 2006-2-2 .+JPtL
* @version 1.0 kmwrv -W
*/ K7&8;So
public class SelectionSort implements SortUtil.Sort { k~9Ywf
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/* KAZkVL
* (non-Javadoc) 7i|hlk;
* tgF(=a]o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _6ax{:/Q
*/ C5lD
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public void sort(int[] data) { zC>(!fJqq
int temp; S,<.!v 57
for (int i = 0; i < data.length; i++) { CK`3
int lowIndex = i; }yC,uEV
for (int j = data.length - 1; j > i; j--) { ofrlTw&o
if (data[j] < data[lowIndex]) { ;|$]Qq
lowIndex = j; A'AWuj\r2R
} $b
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} . =foXN
SortUtil.swap(data,i,lowIndex); ks`
} CR<pB)F?a
} |s3HeY+Co
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Shell排序: _ L:w;Oy9T
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package org.rut.util.algorithm.support; Ynh4oWUp
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import org.rut.util.algorithm.SortUtil; d<cbp[3F
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/** +MoxvW6
* @author treeroot !
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* @since 2006-2-2 PM?Ri^55<L
* @version 1.0 KZ
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*/ }Yl8Q>t
public class ShellSort implements SortUtil.Sort{ "s6_lhu=E7
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/* (non-Javadoc) H><mcah
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ORPl^n-
*/ eEZlVHM;O
public void sort(int[] data) { ZxeE6M^w
for(int i=data.length/2;i>2;i/=2){ ^l2d?v8
for(int j=0;j insertSort(data,j,i); /t 6u"I~
} Hr,gV2n
} 0}C}\1
insertSort(data,0,1); ps;o[gB@5
} jxOVH+?l%
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/** X qva&/-
* @param data J1ro\"
* @param j 1#_j6Q2
* @param i )xy{[ K|M(
*/ C%o/
private void insertSort(int[] data, int start, int inc) { M,U=zNPnk
int temp; L$?~TY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Zu73x#pI
} 7ofH@U
} \^W?
} z)y(31K<1
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} LUVJ218p
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快速排序: T`<k4ur
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package org.rut.util.algorithm.support; R/FV'qy]
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import org.rut.util.algorithm.SortUtil; 9@>hm>g.
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/** CbaAnm1
* @author treeroot QMpA~x_m
* @since 2006-2-2 (eIxU&o'
* @version 1.0 DmA!+
*/ "1 TM
public class QuickSort implements SortUtil.Sort{ LO*a>9LI
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/* (non-Javadoc) xfQ;5n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WjxBNk'f
*/ {"AYOc>2|
public void sort(int[] data) { :H:}t>X6Vo
quickSort(data,0,data.length-1); /*2W?ZM~H
} ^
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private void quickSort(int[] data,int i,int j){ |2` $g
int pivotIndex=(i+j)/2; 6 FxndR;
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SortUtil.swap(data,pivotIndex,j); UdgI<a~`k6
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int k=partition(data,i-1,j,data[j]); n/Z =q?_
SortUtil.swap(data,k,j); 0~5}F^8[L
if((k-i)>1) quickSort(data,i,k-1); 1,D
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if((j-k)>1) quickSort(data,k+1,j); aL6 5t\2
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} ?O^:j!C6
/** hUvH
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* @param data QN5N hs
* @param i c`=hK*
* @param j 3/<^R}w\
* @return J-?(sjIX
*/ j'b4Sbs-f
private int partition(int[] data, int l, int r,int pivot) { -+Ji~;b
do{ 5.UgJ/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J, U~.c
SortUtil.swap(data,l,r); j-E>*N}-_
} D"aQbQP
while(l SortUtil.swap(data,l,r); 6j![m+vo%
return l; WoR**J?}w
} 5 :>
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} 4B>|Wft{p]
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改进后的快速排序: a m%{M7":7
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package org.rut.util.algorithm.support; 9:5NX3"p
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import org.rut.util.algorithm.SortUtil; 3+PM_c)Y
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/** !-Q!/?
* @author treeroot {D.0_=y~2
* @since 2006-2-2 45JLx?rN_
* @version 1.0 +@v} (
*/ 2xm?,p`
public class ImprovedQuickSort implements SortUtil.Sort { Y0'^S<ox
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private static int MAX_STACK_SIZE=4096; : |(B[
private static int THRESHOLD=10; $
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/* (non-Javadoc) O/@ [VPf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [$+61n}.12
*/ ho<#i(
public void sort(int[] data) { nXW1 :
int[] stack=new int[MAX_STACK_SIZE]; !9Xex?et
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int top=-1; Qp Vm
int pivot; Kwau:_B
int pivotIndex,l,r; hZG{"O!2s
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stack[++top]=0; n-WvIy
stack[++top]=data.length-1; 0+h?Bk
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while(top>0){ KwyXM9h6=
int j=stack[top--]; I[ C.iILL
int i=stack[top--]; J(L$pIM
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pivotIndex=(i+j)/2; 3P>@ :
pivot=data[pivotIndex]; N.rB-
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SortUtil.swap(data,pivotIndex,j); l)bUHh5[
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r=j; sIM`Q%
do{ XRin~wz|S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b6VAyTa
SortUtil.swap(data,l,r); SS-
} }DwXs` M7
while(l SortUtil.swap(data,l,r); ymqhI\>y#
SortUtil.swap(data,l,j); *()#*0
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if((l-i)>THRESHOLD){ / nRaxzf'
stack[++top]=i; '?4[w]0J<
stack[++top]=l-1; :eO0{JN4T
} nQC[[G*x
if((j-l)>THRESHOLD){ s=+G%B'
stack[++top]=l+1; {[dqXG$v `
stack[++top]=j; 5lbh
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} fA5#
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} ]|(?i ,p
file://new InsertSort().sort(data); <9vkiEo
insertSort(data); y3GIR
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} !Zx>)V6.
/** ~a Rq\fx{
* @param data W3kilhZ
*/ nwYeOa/t
private void insertSort(int[] data) { ,kI1"@Tu
int temp; wVB8PO8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iBt5aUt
} re2%e-F"
} a!.8^:B&
} XO>Y*7rO
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} Pr"ESd>Y
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归并排序: s,=^V/c
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package org.rut.util.algorithm.support; fk_i~K
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import org.rut.util.algorithm.SortUtil; Adm`s .
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/** hCrgN?Mz
* @author treeroot 7[PXZT
* @since 2006-2-2 rL/+`H
* @version 1.0 eX/$[SL[
*/ UgJHSl
public class MergeSort implements SortUtil.Sort{ ~f:fOrLE#
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/* (non-Javadoc) 2J5dZYW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8h=XQf6k0
*/ 'Z[R*Ikzq
public void sort(int[] data) { dEnhNPeRl
int[] temp=new int[data.length]; A_+WY|#M
mergeSort(data,temp,0,data.length-1); X5=7DE]
} Q*5d~Yr ]R
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private void mergeSort(int[] data,int[] temp,int l,int r){ |m%&Qb
int mid=(l+r)/2; g}7B0 yo
if(l==r) return ; O_q_O
mergeSort(data,temp,l,mid); s&l[GKR
mergeSort(data,temp,mid+1,r); +J}M$eQ
for(int i=l;i<=r;i++){ 8,Z0J
temp=data; 6Xa2A6
} :0l(Ll KD
int i1=l; ))vwofkw4
int i2=mid+1; go@}r<