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。 {xr!H-9ZAA
插入排序: GIQ/gM?Pv
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package org.rut.util.algorithm.support; ]dk44,EL
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import org.rut.util.algorithm.SortUtil; Eugt~j3
/** @=x=dL(
* @author treeroot s$xctIbm?,
* @since 2006-2-2 ) ^PY-~o[
* @version 1.0 N3E Qq~lX
*/ !!f)w!wW
public class InsertSort implements SortUtil.Sort{ 7]a6dMh
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/* (non-Javadoc) 5}gcJjz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bt|S!tEy
*/ @V)k*h3r+
public void sort(int[] data) { 6TS+z7S81L
int temp; 2vWJ|&|p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >69xl^Gd
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冒泡排序: SiHZco
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package org.rut.util.algorithm.support; R^P~iAO
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import org.rut.util.algorithm.SortUtil; #
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/** &O5%6Sv3d
* @author treeroot a
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* @since 2006-2-2 "
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* @version 1.0 FX )g\=ov
*/ yNdtq\h
public class BubbleSort implements SortUtil.Sort{ T#?KY
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/* (non-Javadoc) oz%ZEi\bW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (i>VJr
*/ Zeyhr\T
public void sort(int[] data) { rFZB6A<(]
int temp; 5~4I.+~8
for(int i=0;i for(int j=data.length-1;j>i;j--){ dsqqq,>Q
if(data[j] SortUtil.swap(data,j,j-1); j y{T=Nb
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选择排序: punc'~
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package org.rut.util.algorithm.support; @5Q}o3.zA-
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import org.rut.util.algorithm.SortUtil; .z7XYmv
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/** XLp tJ4~v
* @author treeroot
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* @since 2006-2-2 $ t_s7
* @version 1.0 cqr!*
*/ !TP8LQ
public class SelectionSort implements SortUtil.Sort { vG#|CO9
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/* HY9H?T
* (non-Javadoc) kvv-f9/-
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9+h9]T:9
*/ 8e)k5[\m
public void sort(int[] data) { fDp_W1yH
int temp; d z&| 3o
for (int i = 0; i < data.length; i++) { VkhZt7]K}B
int lowIndex = i; u*{hXR-"
for (int j = data.length - 1; j > i; j--) { +jO1?:Lr
if (data[j] < data[lowIndex]) { B`<(qPD
lowIndex = j; -\\}K\*MJ
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SortUtil.swap(data,i,lowIndex); neJNMdv@T
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Shell排序: b|n%l5
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package org.rut.util.algorithm.support; 9c8zH{T_{
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import org.rut.util.algorithm.SortUtil; IyIh0B~i
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/** TbU\qcm]]
* @author treeroot `da6}Vqj:
* @since 2006-2-2 p9XHYf72
* @version 1.0 (\.[pj%-O
*/ [yL%+I
public class ShellSort implements SortUtil.Sort{ 6Z
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/* (non-Javadoc) s
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,W5pe#n
*/ {o+aEMhM
public void sort(int[] data) { PV(bJ7&R
for(int i=data.length/2;i>2;i/=2){ Hx2UDHF
for(int j=0;j insertSort(data,j,i); Q#urx^aw
} `r'q(M
} XJ?|\=]
insertSort(data,0,1); U }MU>kzb
} )FT~gl%
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/** yfiRMN"2
* @param data NS-u,5Jt
* @param j Ud^+a H
* @param i I/jMe'Kp
*/ WW0N"m'
private void insertSort(int[] data, int start, int inc) { G%;XJsFGp
int temp; X|L.fB=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jWiZ!dtUZ
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} /8Bh
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快速排序: .hn{m9|U
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package org.rut.util.algorithm.support; n7
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import org.rut.util.algorithm.SortUtil; `5<
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/** hUSr1jlA
* @author treeroot WTA0S}pT
* @since 2006-2-2 ml.l( 6A
* @version 1.0 iBwl(,)?m2
*/ s#&jE
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public class QuickSort implements SortUtil.Sort{ kR7IZo"q
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/* (non-Javadoc) o B_c6]K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3%{XJV
*/ |Q`}a %
public void sort(int[] data) { LT!.M m
quickSort(data,0,data.length-1); -5>K
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} PDREwBX
private void quickSort(int[] data,int i,int j){ /XEcA5C<
int pivotIndex=(i+j)/2; eg~$WB;1
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SortUtil.swap(data,pivotIndex,j); /8q7pwV
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int k=partition(data,i-1,j,data[j]); DGO_fR5L
SortUtil.swap(data,k,j); vUS$DUF
if((k-i)>1) quickSort(data,i,k-1); j^llO1i/
if((j-k)>1) quickSort(data,k+1,j); 37?%xQ!
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} Lx8^V7X
/** f";70}_
* @param data "@Ra>qb
* @param i Ik>sd@X*|
* @param j %((F}9_6
* @return tQ5gmj
*/ L7G':oA_`p
private int partition(int[] data, int l, int r,int pivot) { 1& YcCN\k
do{ l@q.4hT
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <'v?WV_
SortUtil.swap(data,l,r); 9Wb9g/L
} , =IbZ
while(l SortUtil.swap(data,l,r); ']u w,b
return l; YgQ_P4B;
} $ n`<,;^l
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改进后的快速排序: t2BkQ8vr
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package org.rut.util.algorithm.support; f6PXcV
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import org.rut.util.algorithm.SortUtil; M cNj TD
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/** RxAWX?9Z
* @author treeroot
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* @since 2006-2-2 D4}WJMQ7s
* @version 1.0 |n=m8X
*/ p !AQ
public class ImprovedQuickSort implements SortUtil.Sort { 2!~j(_TA
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private static int MAX_STACK_SIZE=4096; {}D8Y_=9\
private static int THRESHOLD=10; Q6_!I42Y`
/* (non-Javadoc) nrUrMnlg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9^4^EY#
*/ Sl:Qq!
public void sort(int[] data) { N1\u~%AT"
int[] stack=new int[MAX_STACK_SIZE]; \x(J vDt
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int top=-1; )U>q><
int pivot; uWG'AmK_#E
int pivotIndex,l,r; isj<lnQ
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stack[++top]=0; Iu2RK
stack[++top]=data.length-1; q_g'4VZv
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while(top>0){ qe"5&