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。 $AA~]'O>6:
插入排序: oI_oz0nHk
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package org.rut.util.algorithm.support; 9Hf*cQ
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import org.rut.util.algorithm.SortUtil; Pqy-gWOv
/** 8%o~4u3
* @author treeroot 9W1;Kb|Z<
* @since 2006-2-2 X0y?<G1(a
* @version 1.0 m<FF$pTT
*/ 3yTQ
public class InsertSort implements SortUtil.Sort{ W\it+/
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/* (non-Javadoc) Ro'jM0(KE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xi680'
*/ wVgi+P
public void sort(int[] data) { H<`^w)?
int temp; ow2M,KU6Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5ZnSA9?
} wL'oImE
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冒泡排序: 'sj9[o@]
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package org.rut.util.algorithm.support; 6 -]>]Hr-
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import org.rut.util.algorithm.SortUtil; <u0*"
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/** F?7u~b|@{
* @author treeroot F(deu^s%{
* @since 2006-2-2 BS N6|W
* @version 1.0 ('=Z}~
*/ XmP;L(wa
public class BubbleSort implements SortUtil.Sort{ mv{<'
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/* (non-Javadoc) .+OB!'dDK^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5)w4)K-%
*/ 8Bq-0=E
public void sort(int[] data) { !6lOIgn
int temp; v' C@jsxM
for(int i=0;i for(int j=data.length-1;j>i;j--){ 19'5Re&
if(data[j] SortUtil.swap(data,j,j-1); W/sY#"
} (}G!np
} bV_j`:MD
} {o( *
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选择排序: $|k%@Q>
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package org.rut.util.algorithm.support; /N>} 4Ay
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import org.rut.util.algorithm.SortUtil; )T9~8p.
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/** tj[ c#@[B
* @author treeroot teAukE=}
* @since 2006-2-2 Y3k[~A7X
* @version 1.0 T<P0T<
*/ 1eHe~p ,
public class SelectionSort implements SortUtil.Sort { X &D{5~qC
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/* Jld\8=
* (non-Javadoc) $Zxt&a
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;g+]klR!
*/ QjJfE<h
public void sort(int[] data) { Z|I-BPyn
int temp; JGis" e
for (int i = 0; i < data.length; i++) { b!^@PIX
int lowIndex = i; 6J\fF tB@V
for (int j = data.length - 1; j > i; j--) { N'QqJe7Z
if (data[j] < data[lowIndex]) { 5]d{6Nc3P
lowIndex = j; V&%C\ns4
} s1bU
} L=]p_2+
SortUtil.swap(data,i,lowIndex); &iBNO,v
} n1,S_Hs
} n'M>xq_
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} lL0M^Nv
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Shell排序: ~8{sA5y
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package org.rut.util.algorithm.support; I ]9C_
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import org.rut.util.algorithm.SortUtil; $gvr
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/** `N'V#)Pi
* @author treeroot `*_CElpP"
* @since 2006-2-2
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* @version 1.0 <cj{Qk
*/
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public class ShellSort implements SortUtil.Sort{ $FX,zC<=
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/* (non-Javadoc) q.W>4 k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t,<UohL|z
*/ ?JXa~.dA
public void sort(int[] data) { [_.n$p-
for(int i=data.length/2;i>2;i/=2){ E ]f)Os$
for(int j=0;j insertSort(data,j,i); 3i=Iu0
} r,;\/^ u*
} N'?u1P4G
insertSort(data,0,1); {dzoEM[
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} S|AjL
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/** E!mmLVa9
* @param data J=H)JH3
* @param j GBQn_(b9I
* @param i e|lD:_1i
*/ "#4dW 7E
private void insertSort(int[] data, int start, int inc) { *9D!A
int temp; /.Q4~Hw%}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 27#5y_
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} S
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} RUo9eQIPD
} 2?DRLF]
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} SSA W52xC
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快速排序: :YO@_
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package org.rut.util.algorithm.support; [*4fwk^
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import org.rut.util.algorithm.SortUtil; +!yXTC
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/** |J>WC}g@n
* @author treeroot {C3Y7<
* @since 2006-2-2 l"pN90B4
* @version 1.0 eV};9VJ$F
*/ EgM*d)X
public class QuickSort implements SortUtil.Sort{ `I;F$ `\
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/* (non-Javadoc) zm#nV
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K=\O5#F?3
*/ l#qv 5f
public void sort(int[] data) { AkBMwV
quickSort(data,0,data.length-1); 4. qtp`
} Wf26
private void quickSort(int[] data,int i,int j){ !8Rw O%c(
int pivotIndex=(i+j)/2; ,kM)7!]N
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SortUtil.swap(data,pivotIndex,j); Acm<-de
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int k=partition(data,i-1,j,data[j]); ULqoCd%bK
SortUtil.swap(data,k,j); n"D ?I
if((k-i)>1) quickSort(data,i,k-1); EL{vFP
if((j-k)>1) quickSort(data,k+1,j); wdas1
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} Ym8}ZW-
/** !CY&{LEYn0
* @param data aX6}6zubr
* @param i [2c{k
* @param j , H
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* @return sM2MLh 'D
*/ _}6q{}jn:c
private int partition(int[] data, int l, int r,int pivot) { =H`Q~Xx
do{ 3iNkoBCg
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S?0$? w?
SortUtil.swap(data,l,r); YwDt.6(+,
} !q"cpL'4
while(l SortUtil.swap(data,l,r); r ,(Mu
return l; P:xT0gtt
} L,_.$1d
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} SZU
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改进后的快速排序: *f+: <=i
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package org.rut.util.algorithm.support; ^s :y/Kd
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import org.rut.util.algorithm.SortUtil; o*S"KX$
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/** I/J7rkf
* @author treeroot r7mD{0s*
* @since 2006-2-2 ^"8wUsP
* @version 1.0 f>$``.O
*/ s][24)99
public class ImprovedQuickSort implements SortUtil.Sort { 6sfwlT
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private static int MAX_STACK_SIZE=4096; T D@v9
private static int THRESHOLD=10; ki]ti={12
/* (non-Javadoc) vIGw6BJI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8MwK.H[U
*/ 6QQfQ,
public void sort(int[] data) { >!6JKL~=
int[] stack=new int[MAX_STACK_SIZE]; ^%T7. 1'x
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int top=-1; Ukz;0q
int pivot; ?)4?V\$
int pivotIndex,l,r; ;t#]2<d*
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stack[++top]=0; p<Z3tD;Z
stack[++top]=data.length-1; \E1U@6a
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while(top>0){ ,T,:-E
int j=stack[top--]; .d<W`%[
int i=stack[top--]; ~l[ra
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pivotIndex=(i+j)/2; m` AK~O2
pivot=data[pivotIndex]; gxNL_(A
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SortUtil.swap(data,pivotIndex,j); _u0$,Y?&