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。 )<tI!I][j
插入排序: a5TioQ
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package org.rut.util.algorithm.support; gp\<p-}
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import org.rut.util.algorithm.SortUtil; ?)ONf#4Y
/** 2_Z ? #Y
* @author treeroot M"94#.dKK
* @since 2006-2-2 v
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* @version 1.0 U3dwI:cG
*/ )z28=%g
public class InsertSort implements SortUtil.Sort{ Ptdpj)oi&Q
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/* (non-Javadoc) W@I|Q -
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N <Xq]!
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public void sort(int[] data) { io8'g3<
int temp; lp^<3o*1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ys kO
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冒泡排序: P&^;656r
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package org.rut.util.algorithm.support; yL-YzF2
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import org.rut.util.algorithm.SortUtil; |M,iM]
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/** t,+nQ9
* @author treeroot wG-HF'0L
* @since 2006-2-2 85Otss/mM
* @version 1.0 y1+*6|
*/ 4J/}]Dr5
public class BubbleSort implements SortUtil.Sort{ 7\ s"o&G
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/* (non-Javadoc) 2OVRf0.R~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) waj0"u^#
*/ =E#%'/ A;c
public void sort(int[] data) { vkEiOFU!u
int temp; sW'2+|3"
for(int i=0;i for(int j=data.length-1;j>i;j--){ T~##,qQ
if(data[j] SortUtil.swap(data,j,j-1); ;"~
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} ]Hefm?9*^
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选择排序: ORJIo
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package org.rut.util.algorithm.support; g'n7T|h
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import org.rut.util.algorithm.SortUtil; Vg>dI&O
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/** MS
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* @author treeroot 9Hb6nm
* @since 2006-2-2 tne ST.
* @version 1.0 !C3MFm{B
*/ |es?;s'
public class SelectionSort implements SortUtil.Sort { #(N+(():
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iW%I|&
*/ H2jgO?l;!
public void sort(int[] data) { AicBSqUke
int temp; 3yU.& k
for (int i = 0; i < data.length; i++) { YA_c
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int lowIndex = i; #mCL) [
for (int j = data.length - 1; j > i; j--) { W_\5nF
if (data[j] < data[lowIndex]) { JP!~,mdS
lowIndex = j; UU;(rS/
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SortUtil.swap(data,i,lowIndex); ( u\._Gwsx
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Shell排序: qG?Qc (
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package org.rut.util.algorithm.support; >,$_| C
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import org.rut.util.algorithm.SortUtil; D%OQ e#!
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/** /v1Q4mq
* @author treeroot w[zjerH3
* @since 2006-2-2 =hC,@R>;
* @version 1.0 diL+:H
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public class ShellSort implements SortUtil.Sort{ p.v0D:@&
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/* (non-Javadoc) 8D3OOab
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )NXmn95
*/ K/j3a[.
public void sort(int[] data) { Zw5Ni Xj
for(int i=data.length/2;i>2;i/=2){ [q)8N
for(int j=0;j insertSort(data,j,i); Ln')QN
} t{^*6XOcJ
} Z'`gJ&6n
insertSort(data,0,1); aQ?/%\>
} \r^qL^
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/** DS.RURzd{r
* @param data AS'R?aX|C
* @param j /YW>*?"N
* @param i p*4':TFuD;
*/ :dl]h&C^
private void insertSort(int[] data, int start, int inc) { C*)3e*T*
int temp; GP!?^r:en
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |[<_GQl
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} 3G,Oba[$<
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快速排序: ;4R$g5-4X
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package org.rut.util.algorithm.support; "pi=$/RD9
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import org.rut.util.algorithm.SortUtil; u]<,,
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/** @r/#-?W
* @author treeroot :)wy.r;N
* @since 2006-2-2 bf ]f=;.+
* @version 1.0 \r;#g{
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*/ Vwg|K|
public class QuickSort implements SortUtil.Sort{ #%a;"w
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/* (non-Javadoc) &zl|87M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5{|7$VqPF
*/ ck ]Do!h
public void sort(int[] data) { nhB1D-
quickSort(data,0,data.length-1); gp};D
} @|
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private void quickSort(int[] data,int i,int j){ jSD#X3qp
int pivotIndex=(i+j)/2; aktU$Wbwl
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SortUtil.swap(data,pivotIndex,j); Y_;#UU689
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int k=partition(data,i-1,j,data[j]); hm84Aq= f
SortUtil.swap(data,k,j); tX9{hC^
if((k-i)>1) quickSort(data,i,k-1); 6]V4muz#c
if((j-k)>1) quickSort(data,k+1,j); bU>U14ix<
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} wa<MRt W=
/** I
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* @param data /[a~3^Gs^
* @param i q.KG^=10
* @param j -[*,^Ti`
* @return SN9kFFIPb=
*/ &oP+$;Y
private int partition(int[] data, int l, int r,int pivot) { 3EV;LH L
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -V-RP;">
SortUtil.swap(data,l,r); A;;fACF8e
} 7]U"Z*
while(l SortUtil.swap(data,l,r); q!{y&.&\
return l; 35Ij
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} |'.*K]Yp
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改进后的快速排序: p#01gB
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package org.rut.util.algorithm.support; ,V,`Jf
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import org.rut.util.algorithm.SortUtil; I?h)OvWd
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/** L6t+zIUc-~
* @author treeroot Vi>,kF.fV
* @since 2006-2-2 y~Bh
* @version 1.0 n&{Dq}q
*/
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public class ImprovedQuickSort implements SortUtil.Sort { 6.CbAi3Z
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private static int MAX_STACK_SIZE=4096; )#BMTKA^
private static int THRESHOLD=10; NTdixfR
/* (non-Javadoc) (_niMQtF}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eK6hS_E
*/ Fz3fwLawI
public void sort(int[] data) { 6%'.A]"
int[] stack=new int[MAX_STACK_SIZE]; Qiua
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int top=-1; 3VsW@SG7N
int pivot; WzPTFw[
int pivotIndex,l,r; q
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stack[++top]=0; 3*]eigi)
stack[++top]=data.length-1; *S]Ci\{_
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while(top>0){ LIS)(X<]?
int j=stack[top--]; 9 %8"e>~
int i=stack[top--]; D N'3QQn
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pivotIndex=(i+j)/2; _g+JA3sIJ
pivot=data[pivotIndex]; -l`f)0{
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SortUtil.swap(data,pivotIndex,j); vL|SY_:4
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