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。 v]UT1d=_T
插入排序: '
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package org.rut.util.algorithm.support; $#VE C0
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import org.rut.util.algorithm.SortUtil; 3
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/** 6'YT3=
* @author treeroot cR'l\iv+
* @since 2006-2-2 )k)HQcfjD
* @version 1.0 r%`g` It
*/ 1>I4=mj
public class InsertSort implements SortUtil.Sort{ z'=8U@P'#
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/* (non-Javadoc) e[<vVe!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B 2p/
*/ gD}lDK6N
public void sort(int[] data) { 00jW s@K
int temp; Q&j-a;L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z TYHwx
} %b8ig1
} 7+_TdDBYs
} }q<p;4<\F
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} `fTH"l1zn
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冒泡排序: '%Cc!63t*
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package org.rut.util.algorithm.support; ~
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import org.rut.util.algorithm.SortUtil; ''t\J^+&
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/** }
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* @author treeroot %rE:5)
* @since 2006-2-2 tuT>,BbR
* @version 1.0 k
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*/ 3jSt&+
public class BubbleSort implements SortUtil.Sort{ I+08tXO
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/* (non-Javadoc) 5;WESk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B* 0TM+
*/ Y-yozt
public void sort(int[] data) { Dj?84y
int temp; l k~VvRq
for(int i=0;i for(int j=data.length-1;j>i;j--){ &>nB@SQZ
if(data[j] SortUtil.swap(data,j,j-1); |ry![\
} O`?qnNmc;
} (,nQ7,2EX
} k4N_Pa$}\
} ` nd/N#
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选择排序: 8dPDs#Zl
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package org.rut.util.algorithm.support; |Y-{)5/5}
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import org.rut.util.algorithm.SortUtil; 91f{qq=#J{
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/** O)N$nBnp
* @author treeroot ,xSNTOJ
* @since 2006-2-2 "A(D}~i
* @version 1.0 PiwMl)E|!
*/ |WkWZZ^
public class SelectionSort implements SortUtil.Sort { u~O9"-m !V
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/* .-Z=Aa>
* (non-Javadoc) ^X]rFY1
* u0Q6+U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _xWX/1DY
*/ %I^schE*
public void sort(int[] data) { ;*c8,I;
int temp; ?^3Y+)}
for (int i = 0; i < data.length; i++) { KPi_<LuK
int lowIndex = i; FhP$R}F
for (int j = data.length - 1; j > i; j--) { ;B^ 9sr
if (data[j] < data[lowIndex]) { nyoLrTs{
lowIndex = j; '048Qykt;
} } yb"/jp
} tZXq<k9
SortUtil.swap(data,i,lowIndex); (Sv=R(_s
} \sn
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} O#_\@f#[
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Shell排序: 1La?x'{2MP
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package org.rut.util.algorithm.support; XQ'$J_hC
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import org.rut.util.algorithm.SortUtil; \? n<UsI
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/** Leu6kPk
* @author treeroot $RA+StF!]
* @since 2006-2-2 SpO%nZ";g8
* @version 1.0 01n7ua*XX
*/ Gh5 3Pne
public class ShellSort implements SortUtil.Sort{ 1Y:JGon
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/* (non-Javadoc) r9Vt}]$a G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [-0=ZKH?
*/ +Pc2`,pw|
public void sort(int[] data) { ,. HS )<B
for(int i=data.length/2;i>2;i/=2){ |jI|},I
for(int j=0;j insertSort(data,j,i); 5(>ux@[qI:
} cd&sAK"
} 8kf5u#,'
insertSort(data,0,1); V8O-|7H$v
} Eo`'6
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/** 5yL\@7u`
* @param data g [u*`]-;v
* @param j 03n+kh
* @param i {^.q6,l
*/ >:bXw#w]
private void insertSort(int[] data, int start, int inc) { TV Zf@U
int temp; +<T361eyY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); % !>@m6JK
} s7(1|}jh
} :sS4T&@1=
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} OI,F,4e
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快速排序: _G$21=
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package org.rut.util.algorithm.support; WR9-HPF
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import org.rut.util.algorithm.SortUtil; P\y ZcL
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/** rA|&G'
* @author treeroot *m8{yh
* @since 2006-2-2 $WiUoS
* @version 1.0 FMtg7+Q|>
*/ sk5B} -
public class QuickSort implements SortUtil.Sort{ -bgj<4R$p
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/* (non-Javadoc) uf1s}/M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~J0r%P
*/ t~|`RMn"
public void sort(int[] data) { @dn&M9Z
quickSort(data,0,data.length-1); BS2'BS8
} ;>%wf3e
private void quickSort(int[] data,int i,int j){ gSHN,8.
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int pivotIndex=(i+j)/2; ,:{+-v(
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SortUtil.swap(data,pivotIndex,j); _4
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int k=partition(data,i-1,j,data[j]); /&E]qc*-p
SortUtil.swap(data,k,j); Z kBWVZb
if((k-i)>1) quickSort(data,i,k-1); 50dx[v8
if((j-k)>1) quickSort(data,k+1,j); R"{P#U,HNO
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} ? r}2JHvN
/** ( m7qc
* @param data l15Z8hYhj
* @param i 6H!l>@a7v
* @param j yb-4[C:i
* @return @zJiR{Je-U
*/ `Bb32L
private int partition(int[] data, int l, int r,int pivot) { xS; tmc
do{ #"-DE-I[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); FP")$
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SortUtil.swap(data,l,r); Q?bC'147O
} ltv~Kh
while(l SortUtil.swap(data,l,r); ctPT=i60
return l; ~i]4~bkH2
} sw50lId
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} %NcBq3
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改进后的快速排序: j>5X^Jd
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package org.rut.util.algorithm.support; wjTW{Bg~G
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import org.rut.util.algorithm.SortUtil; +fHqGZ]
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/** I5]58Ohx
* @author treeroot Qnx?5R-}ZU
* @since 2006-2-2 xiVbVr#[
* @version 1.0 ;<=z^1X9
*/ 1I%niQv5t
public class ImprovedQuickSort implements SortUtil.Sort { L+lX$k
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private static int MAX_STACK_SIZE=4096; YXg^t$
private static int THRESHOLD=10; )"g @"LJ=
/* (non-Javadoc) ?z3|^oU~d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U^Iq]L
*/ t1p[!53(
public void sort(int[] data) { CQA^"Ll
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; @>F`;'_*z
int pivot; P)[QC
int pivotIndex,l,r; WHr:M/qD
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stack[++top]=0; aN';_tGvK
stack[++top]=data.length-1; lr[&*v?h
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while(top>0){ (\4YBaGd
int j=stack[top--]; \*#E4`Y
int i=stack[top--]; &-KQ
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pivotIndex=(i+j)/2; 91ec^g
pivot=data[pivotIndex]; y(j vl|z[
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SortUtil.swap(data,pivotIndex,j); +$R%Vbd
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