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。 3WCqKXJ7
插入排序: }F{C= l2
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package org.rut.util.algorithm.support; =_8
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import org.rut.util.algorithm.SortUtil; xvR?~
/** >+:r '
* @author treeroot NtY*sUKRD
* @since 2006-2-2 &[5n0e[
* @version 1.0 /&]-I$G@
*/ r(:
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public class InsertSort implements SortUtil.Sort{ g\o{}Q%X
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/* (non-Javadoc) e&$p-0DmT|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3@^>#U
*/ ~$4]HDg
public void sort(int[] data) { u0XP(dH
int temp; ^]$$)(jw
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (PS$e~Hs
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冒泡排序: uAu( +zV2
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package org.rut.util.algorithm.support; m[Z6VHn
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import org.rut.util.algorithm.SortUtil; i2$*}Cu
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/** v9%nau4
* @author treeroot LthGZ|>
* @since 2006-2-2 CI,lkO|C
* @version 1.0 2m_'z
*/ aZ`<PdA
public class BubbleSort implements SortUtil.Sort{ =G(*gx
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/* (non-Javadoc) 0 Tcz[$?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sNm,Fmuz:
*/ E{uf\Fc
public void sort(int[] data) { hUVk54~l
int temp; bE?'C h
for(int i=0;i for(int j=data.length-1;j>i;j--){ /xcJo g~F,
if(data[j] SortUtil.swap(data,j,j-1); qAqoZMpI|;
} eGLO!DdxZ
} >;)2NrJV
} 8;TAb.r
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} q( IZJGb
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选择排序: *z q .C
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package org.rut.util.algorithm.support; & g:%*>7P
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import org.rut.util.algorithm.SortUtil; X~lZ OVmS
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/** S?L#N
* @author treeroot ^]6M["d/p
* @since 2006-2-2 Jen%}\
* @version 1.0 6B#('gxO
*/ wUoiXi09
public class SelectionSort implements SortUtil.Sort { 1HhX/fpq
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/* abBO93f^
* (non-Javadoc) U/Wrh($ #4
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T7{<arL$
*/ thuRNYv<
public void sort(int[] data) { p*
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int temp; #.._c?%4/
for (int i = 0; i < data.length; i++) { qMP1k7uG)
int lowIndex = i; 8(f:U@BS
for (int j = data.length - 1; j > i; j--) { lnh+a7a)
if (data[j] < data[lowIndex]) { wL}l`fRB
lowIndex = j; 3qaMO#{M
} epg#HNP7^Y
} lpB3&H8&
SortUtil.swap(data,i,lowIndex);
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Shell排序: jszK7$]^
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package org.rut.util.algorithm.support; E>|: D
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import org.rut.util.algorithm.SortUtil; sEJC-$
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/** ar9]"s+'
* @author treeroot 1KM`i
* @since 2006-2-2 ;!!n{l$r'
* @version 1.0 gKYfQ+
*/ phnV7D(E
public class ShellSort implements SortUtil.Sort{ \R36w^c3
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/* (non-Javadoc) ,'xYlH3s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {(U %i\F\
*/ PYbVy<xc
public void sort(int[] data) { Qx;\USv
for(int i=data.length/2;i>2;i/=2){ li~d?>
for(int j=0;j insertSort(data,j,i); /DQaGq/Ld
} z|EEVNFd&
} Qham^
insertSort(data,0,1); n!p<A.O7@
} s7Ub@
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/** )E@A0 W
* @param data ),G= s Oo
* @param j V-<GT?
* @param i 1N7Kv4,
*/ =jB08A
private void insertSort(int[] data, int start, int inc) { sl]_M
int temp; t2,A@2DU2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3;S,3
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快速排序: !O `(JSoG
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package org.rut.util.algorithm.support; O3I8k\`
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import org.rut.util.algorithm.SortUtil; 7;KwLT 9
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/** E\Rhz]G(
* @author treeroot F(tx)V
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* @since 2006-2-2 ee yHy"@
* @version 1.0 W[Ls|<Q
*/ rg^'S1x|
public class QuickSort implements SortUtil.Sort{ &l!4mxwr`
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/* (non-Javadoc) 9WyAb3d'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0u;4%}pD
*/ Vh_P/C+
public void sort(int[] data) { 9I}-[|`u
quickSort(data,0,data.length-1); FoN|i"*l
} ,yiX# ;j
private void quickSort(int[] data,int i,int j){ *MKO
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int pivotIndex=(i+j)/2; P-?0zF/T$
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SortUtil.swap(data,pivotIndex,j); a{L
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int k=partition(data,i-1,j,data[j]); kM,C3x{A
SortUtil.swap(data,k,j); %J+E/
if((k-i)>1) quickSort(data,i,k-1); \G*0"%!U
if((j-k)>1) quickSort(data,k+1,j); vSEuk}pk
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} PGqQ@6B
/** \W~N
* @param data 1q7|OWFT
* @param i .+$Q<L
* @param j Q+[n91ey**
* @return ,Q
*/ ~E17L]ete
private int partition(int[] data, int l, int r,int pivot) { JRB9rSN^
do{ JMC. w!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '=b/6@&
SortUtil.swap(data,l,r); HiZ*+T.B
} ZOh`(})hy
while(l SortUtil.swap(data,l,r); b3=rG(0f
return l; `dq,>HdW
} k\5c|Wq|g
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改进后的快速排序: M:Pc,
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package org.rut.util.algorithm.support; Fs9!S a7v
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import org.rut.util.algorithm.SortUtil; marQNZ
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/** .*OdqLz
* @author treeroot M?1Y,5
* @since 2006-2-2 {$0mwAOH "
* @version 1.0 'j#*6xD
*/ 8\&X2[oAD
public class ImprovedQuickSort implements SortUtil.Sort { n]._uza
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private static int MAX_STACK_SIZE=4096; J!dm-L
private static int THRESHOLD=10; G#ZH.24Y
/* (non-Javadoc) &*M!lxDN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]C!gQq2'a
*/ $*^7iT4q_t
public void sort(int[] data) { zu_8># i-
int[] stack=new int[MAX_STACK_SIZE]; BtkOnbz8X
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int top=-1; ?+))}J5N\
int pivot; |mZxfI
int pivotIndex,l,r; p$S*dr
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stack[++top]=0; d[iQ`YW5
stack[++top]=data.length-1; %z=le7
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while(top>0){ lU8l}Ndz"
int j=stack[top--]; ?g_3 [Fk
int i=stack[top--]; g9
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