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。 C{U?0!^
插入排序: <g"{Wv: h
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package org.rut.util.algorithm.support; bbE!qk;hEP
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import org.rut.util.algorithm.SortUtil; 17%Mw@+
/** PGqQ@6B
* @author treeroot Gefne[
* @since 2006-2-2 5>[u `
* @version 1.0 ,J+}rPe"sf
*/ 'uBu6G
public class InsertSort implements SortUtil.Sort{ 4y|BOVl
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/* (non-Javadoc) 9Z4nAc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]n6#VTz*
*/ ]s<[D$ <,
public void sort(int[] data) { t'n pG}`tE
int temp; -XB/lnG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A^USBv+9`
} JMC. w!
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冒泡排序: IG2r#N|C#
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package org.rut.util.algorithm.support; u_oaebOrpP
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import org.rut.util.algorithm.SortUtil; ~%<X0s|
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/** H\ F:95
* @author treeroot Lt64JH^lz
* @since 2006-2-2 <:+ x+4ru
* @version 1.0 5?{r
*/ +^60T$
public class BubbleSort implements SortUtil.Sort{ TM%|'^)
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/* (non-Javadoc) >g1~CEMN#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q'T4w!V(V
*/ >mwlsL~X
public void sort(int[] data) { e"{{ TcNk
int temp; hOjk3
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for(int i=0;i for(int j=data.length-1;j>i;j--){ oB(?_No7
if(data[j] SortUtil.swap(data,j,j-1); ,Vc6Gwm
} Tp?7_}tRi
} 6m}Ev95
} rV ` #[d
} J,'M4O\S
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} A8muQuj]~~
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选择排序: &6/[B_.
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package org.rut.util.algorithm.support; Cio
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import org.rut.util.algorithm.SortUtil; 0q()|y?}
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/** !|S(Ms
* @author treeroot &*M!lxDN
* @since 2006-2-2 =W(Q34
* @version 1.0 n\mO6aJ
*/ I9|mG'
public class SelectionSort implements SortUtil.Sort { W!Gq.M
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/* o_izl\
* (non-Javadoc) 03$mYS_?
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KLST\Ln:
*/ B6MB48#0gs
public void sort(int[] data) { ZF!h<h&,
int temp; (nQ^
for (int i = 0; i < data.length; i++) { p$S*dr
int lowIndex = i; 94'&b=5+
for (int j = data.length - 1; j > i; j--) { y6(Z`lx
if (data[j] < data[lowIndex]) { 5'OrHk;u
lowIndex = j; 3#LlDC_WC
} %z=le7
} E>6MeO
SortUtil.swap(data,i,lowIndex); zVViLUwG
} 5%Y3 Kwyy
} {&&z-^
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Shell排序: Xr,1&"B&t
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package org.rut.util.algorithm.support; yuh *
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import org.rut.util.algorithm.SortUtil; =*oJEy"
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/** P\E<9*V
* @author treeroot ]%;:7?5l
* @since 2006-2-2 9)l$ aBa
* @version 1.0 #|uCgdi
*/ tHU 2/V:R
public class ShellSort implements SortUtil.Sort{ U7?;UCmX
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/* (non-Javadoc) ^
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )*u8/U
*/ `}p0VmD{NE
public void sort(int[] data) { 7y.kQI?3
for(int i=data.length/2;i>2;i/=2){ /T"+KU*
for(int j=0;j insertSort(data,j,i); `aOFs+<)
} * `JYC
} z0d.J1VW
insertSort(data,0,1); lov!o:dJ
} &)QX7*H
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/** D,k6$`
* @param data f[]dfLS"W
* @param j GV1pn) 4
* @param i esJ~;~[@(r
*/ v&6-a* <Z
private void insertSort(int[] data, int start, int inc) { 8'[~2/
int temp; 5tl< 3g`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B`EJb71^Xy
} l5~os>
} d9k0F
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} ]a>n:p]e
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} EfqX
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快速排序: &eJfGt5
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package org.rut.util.algorithm.support; ___~D
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import org.rut.util.algorithm.SortUtil; :@yEQ#nFp
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/** A@`}c,G
* @author treeroot L7l
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* @since 2006-2-2 z[N`s$;
* @version 1.0 =0
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*/ ::`HQ@^
public class QuickSort implements SortUtil.Sort{ Fw_#N6Q
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/* (non-Javadoc) Ao 'l"-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -oGdk|Yn
*/ )705V|v
public void sort(int[] data) { Zj(AJ* r
quickSort(data,0,data.length-1); X;$+,&M"
} \$K20)
private void quickSort(int[] data,int i,int j){ 5%"V[lDx@
int pivotIndex=(i+j)/2; F~-(:7j
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SortUtil.swap(data,pivotIndex,j); /l3V3B7
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int k=partition(data,i-1,j,data[j]); Y/F6\oh
SortUtil.swap(data,k,j); -E[Kml~U
if((k-i)>1) quickSort(data,i,k-1); I^.Om])
if((j-k)>1) quickSort(data,k+1,j); O2V
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} poE0{HOU
/** ~g91Pr
* @param data #<fRE"v:Q
* @param i ZtNN<7
* @param j (g]!J_Z"
* @return 8\^R~K`sY
*/ Xg6Jh``
private int partition(int[] data, int l, int r,int pivot) { 9X6h
do{ Ov@gh
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }CSDV9).S
SortUtil.swap(data,l,r);
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} l$KA)xbI
while(l SortUtil.swap(data,l,r); <)Dj9' _J
return l; w7L{_aom
} 70?\ugxA
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} b`Zx!^
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改进后的快速排序: gT.sjd
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package org.rut.util.algorithm.support; x8 2cT21b
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import org.rut.util.algorithm.SortUtil; 9cbd~mM{
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/** ]h`&&B qt
* @author treeroot P\tB~SZ*
* @since 2006-2-2 >58YjLXb
* @version 1.0 [>I<#_^~
*/ l:~/<`o
public class ImprovedQuickSort implements SortUtil.Sort { J3V=
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private static int MAX_STACK_SIZE=4096; ELoDd&