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。 NwuME/C7#
插入排序: \A5cM\-
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package org.rut.util.algorithm.support; 6,0pkx&Nv
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import org.rut.util.algorithm.SortUtil; ;vF8V`f
/** ~|pVz/s|G
* @author treeroot }O@S;[v
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* @since 2006-2-2 wr8n*Du
* @version 1.0 7^Jszd:c08
*/ ^Y~ ,s
public class InsertSort implements SortUtil.Sort{ =6q?XOM
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/* (non-Javadoc) T8ZBQ;o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JHc|.2Oe
*/ @k,u xe-
public void sort(int[] data) { Z%XBuq:BY
int temp; ]ODC+q1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _d]w)YMO
} Lz=nJn
} ?a~=CC@
} PQXyu1
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冒泡排序: 7J,W#Ql)5
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package org.rut.util.algorithm.support; /^#k/z
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import org.rut.util.algorithm.SortUtil; CjOaw$s
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/** &.+[~2
* @author treeroot M`KrB5a+6
* @since 2006-2-2 4G@vO{$
* @version 1.0 zY\v|l<T
*/ Q]w;o&eo
public class BubbleSort implements SortUtil.Sort{ fmA&1u/xMs
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/* (non-Javadoc) Fx0K.Q2Y0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8b(UqyV
*/ ;MCv
public void sort(int[] data) { <hdR:k@#
int temp; //e.p6"8h
for(int i=0;i for(int j=data.length-1;j>i;j--){ } ~=53$+
if(data[j] SortUtil.swap(data,j,j-1); v.cB3/$z
} Nb#E+\q
} t\{q,4
} GfJm&'U&
} 0X0HDQ
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} WaN0$66[:
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选择排序: "a5?cX;
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package org.rut.util.algorithm.support; 1b;Aru~l
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import org.rut.util.algorithm.SortUtil; f>waFu-
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/** )+oDa{dZ
* @author treeroot !;'U5[}8
* @since 2006-2-2 EZIMp8^
* @version 1.0 jLD=EJ
*/ {NKDmeg:D
public class SelectionSort implements SortUtil.Sort { y= cBpC
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/* ]Vl*!,(i
* (non-Javadoc) %I(N
* Y$Js5K@F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A7+eWg{
*/ *u
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public void sort(int[] data) { e@Z(z^V
int temp; AvEJX0"\df
for (int i = 0; i < data.length; i++) { JF%+T yMe
int lowIndex = i; ^%#v
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for (int j = data.length - 1; j > i; j--) { O jE wJ$$
if (data[j] < data[lowIndex]) { /_x?PiL
lowIndex = j; +%?_1bGX>
} Bu>srX9f
}
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SortUtil.swap(data,i,lowIndex); ;'}1
} 4rwfY<G
} @w,-T@nAW
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} "]*0)h_
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Shell排序: exTpy
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package org.rut.util.algorithm.support; 1U@qRU
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import org.rut.util.algorithm.SortUtil; #2_phm'
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/** ~6kEpa
* @author treeroot {G%`K,T
* @since 2006-2-2 T"in
* @version 1.0 -g;iMqh#
*/ -7'>Rw
public class ShellSort implements SortUtil.Sort{ {{SQL)yJ
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/* (non-Javadoc) ,U],Wu)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PM7*@~.
*/ HR\yJt
public void sort(int[] data) { < I8hy$+6
for(int i=data.length/2;i>2;i/=2){ {/XzIOO;b
for(int j=0;j insertSort(data,j,i); .FqbX5\p,
} !wJ~p:vRdY
} 2[r#y1ro
insertSort(data,0,1); k
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} d=xU
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/** 6Nj\N oS
* @param data /XS}<!)%
* @param j P3on4c
* @param i 'r(}7>~fC
*/ SEIGs_^'\
private void insertSort(int[] data, int start, int inc) { Q;)[~p
int temp; 'F5&f9A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qI^6}PB
} 3"6lPUS
} X*]uLgbl
} ,Tvk&<!0
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快速排序: qg'RD]a> R
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package org.rut.util.algorithm.support; ,wlFn
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import org.rut.util.algorithm.SortUtil; (O\5gAx
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/** pLDseEr<
* @author treeroot x`WP*a7Fk]
* @since 2006-2-2 52C>f6w
* @version 1.0 C6M|A3^T
*/ crz )F"
public class QuickSort implements SortUtil.Sort{ VI74{='=
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/* (non-Javadoc) Owo2DsT t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |k^'}n
*/ =v:vc~G6
public void sort(int[] data) { ht(RX
quickSort(data,0,data.length-1); *_!nil 3(i
} 8l~]}2LAs
private void quickSort(int[] data,int i,int j){ ltwX-
int pivotIndex=(i+j)/2; aiF7\^aw$
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SortUtil.swap(data,pivotIndex,j); r0+lH:G*q
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int k=partition(data,i-1,j,data[j]); 7!]$XGz[
SortUtil.swap(data,k,j); 0x4Xs
if((k-i)>1) quickSort(data,i,k-1); ]p\7s
if((j-k)>1) quickSort(data,k+1,j); )U`6` &F
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} &;&i#ZO
/** (]w_}E]N
* @param data Oq7M1|{
* @param i "4<RMYQ
* @param j Qo4]_,kR
* @return po4seW!
*/ Mi%i_T^i
private int partition(int[] data, int l, int r,int pivot) { P%8
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do{ sG=D(n1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?w#V<3=
SortUtil.swap(data,l,r); ^vn8s~#
} yS[:C
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while(l SortUtil.swap(data,l,r); 0BMKwZg
return l; sX.L
} EeIV6ug
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} b^~ keQ
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改进后的快速排序: $]2srRA^A
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package org.rut.util.algorithm.support; "9'~6b
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import org.rut.util.algorithm.SortUtil; @%d g0F}h
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/** |L}zB,
* @author treeroot $sTbFY
* @since 2006-2-2
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* @version 1.0 `O?Kftv*
*/ V7U&8UPb
public class ImprovedQuickSort implements SortUtil.Sort { eee77.@y-p
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private static int MAX_STACK_SIZE=4096; 9t:F![rg
private static int THRESHOLD=10; A'vQtlvKA
/* (non-Javadoc) Jz&a9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VgD z:j
*/ ,m;S-Im_Xr
public void sort(int[] data) { Jr$,w7tQn@
int[] stack=new int[MAX_STACK_SIZE]; ELf cZfJ
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int top=-1; L.ScC
int pivot; Y~gDS^8
int pivotIndex,l,r; d[E~}Dq3#
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stack[++top]=0; $M{MOehZ
stack[++top]=data.length-1; 4QC"|<9R
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while(top>0){ ,V1/(|[h
int j=stack[top--]; _0N=~`'
int i=stack[top--]; 0zQ"5e?qy
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pivotIndex=(i+j)/2; a\;1%2a
pivot=data[pivotIndex]; ZG[P?fM
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SortUtil.swap(data,pivotIndex,j); 3#N'nhUzA
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file://partition K2$ fKju
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do{ 1N6.r:wg)%
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h
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SortUtil.swap(data,l,r); 7=i8$v&GX
} -AnQZy
while(l SortUtil.swap(data,l,r); 2;Vss<hR4A
SortUtil.swap(data,l,j); ~e*3_l>9
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if((l-i)>THRESHOLD){ H'KCIqo
stack[++top]=i; OAJGwm
stack[++top]=l-1; FvYgp bEZ
} |osu4=s|
if((j-l)>THRESHOLD){ 0U|t@&q
stack[++top]=l+1; j/.$ (E
stack[++top]=j; \ #<.&`8B
} EQe !&;
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} }L
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file://new InsertSort().sort(data); !dnCrR
insertSort(data); <A|X4;
} YnM&t
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/** w-iu/|}
* @param data < z':_,
*/ Pq\
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private void insertSort(int[] data) { kY>jp@wV
int temp; mzw`{Oy>L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w>#{Nl7gz
} ]oT8H?%*Y
} Dzd[<Qln
} n/W@H Im#
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} 0s9-`nHen|
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归并排序: g)?Ol
D5Zgi!
package org.rut.util.algorithm.support; yS#)F.
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import org.rut.util.algorithm.SortUtil; k=]#)A(#C
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/** MB7UI8
* @author treeroot ~6{iQZa1Y
* @since 2006-2-2 Fl0(n #L
* @version 1.0 ?'_Ty`vT
*/ 6U .A/8z
public class MergeSort implements SortUtil.Sort{ OaTnQ|*
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/* (non-Javadoc) d]A.=NAc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8^IV`P~2M
*/ u<L<o2
public void sort(int[] data) { Sg%h}]~
int[] temp=new int[data.length]; wnioIpRkh
mergeSort(data,temp,0,data.length-1); { 6
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} Zv]'9,cbk
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private void mergeSort(int[] data,int[] temp,int l,int r){ e
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int mid=(l+r)/2; } 6 ,m2u
if(l==r) return ; z*V 8l*
mergeSort(data,temp,l,mid); ./]xn
mergeSort(data,temp,mid+1,r); Q};n%&n&
for(int i=l;i<=r;i++){ fe!eZiE
temp=data; BiY-u/bH9a
} dU}Cb?]7s
int i1=l; m+UWvUB)
int i2=mid+1; Sp7VH+
for(int cur=l;cur<=r;cur++){ R$XHjb)
if(i1==mid+1) _0cCTQE
data[cur]=temp[i2++]; A<h^.{
else if(i2>r) ai7R@~O:_k
data[cur]=temp[i1++]; "D\>oFu
else if(temp[i1] data[cur]=temp[i1++]; --fRh N>
else Bd'X~Vj<
data[cur]=temp[i2++]; ?"F9~vx&G
} ol0i^d*9F
} nxWm
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} 7vo8lnQ{
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改进后的归并排序: %p48=|+
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package org.rut.util.algorithm.support; i:a*6b.U@N
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