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。 AqVTHyCu
插入排序: s-r$%9o5
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package org.rut.util.algorithm.support; *iF>}yh e
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import org.rut.util.algorithm.SortUtil; -tT{h4
/** Tgp}k%R~
* @author treeroot ]?,47,[<
* @since 2006-2-2 L@?Dmn'v
* @version 1.0 HZ=Dd4!
*/ BQf}S
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public class InsertSort implements SortUtil.Sort{ 87EI<\mP
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/* (non-Javadoc) ~BCSm]j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pTZPOv#?Q
*/ I/9ZUxQCyG
public void sort(int[] data) { %"
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int temp; #{(?a.:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !mpRLBH
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冒泡排序: H;,cUb
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package org.rut.util.algorithm.support; lfu1PCe5
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import org.rut.util.algorithm.SortUtil; mKZ?H$E%%
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/** _6qf>=qQ`"
* @author treeroot 6KhHS@Z
* @since 2006-2-2 8E/$nRfOd
* @version 1.0 J),7ukLu^
*/ c[< lr
public class BubbleSort implements SortUtil.Sort{ [w~teX0!
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/* (non-Javadoc) e~J% NU '&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ezlp~z"_k
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public void sort(int[] data) { ".v9#|
int temp; 5gI@~h S
for(int i=0;i for(int j=data.length-1;j>i;j--){ +d\"n
if(data[j] SortUtil.swap(data,j,j-1); ,{itnKJC
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选择排序: i1vBg}WHN
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package org.rut.util.algorithm.support; N&S:=x:$S
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import org.rut.util.algorithm.SortUtil; 3-32q)8
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/** S~YrXQ{_>-
* @author treeroot nP'ab_>b
* @since 2006-2-2 <3HW!7Ad1
* @version 1.0 `;*=2M<c
*/ XnWr~h{b
public class SelectionSort implements SortUtil.Sort { {FQ
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* (non-Javadoc) B_`A[0H
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LLgN%!&
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public void sort(int[] data) { @z
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int temp; $+JaEF`8
for (int i = 0; i < data.length; i++) { VbBZ\`b
int lowIndex = i; &[S)zR=?
for (int j = data.length - 1; j > i; j--) { aU4'_%Y@
if (data[j] < data[lowIndex]) { nImRU.;P
lowIndex = j;
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SortUtil.swap(data,i,lowIndex); }E8 Y,;fTD
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Shell排序: ^fnRzX
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package org.rut.util.algorithm.support; X/5tZ@
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import org.rut.util.algorithm.SortUtil; yKZ~ ^
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/**
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* @author treeroot *PL+)2ob
* @since 2006-2-2 DKIDLf
* @version 1.0 3p!R4f)GN
*/ _3A$zA
public class ShellSort implements SortUtil.Sort{ $C#~c1w
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/* (non-Javadoc) aeSy,:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J>hl&J
*/ Z`b,0[rG[
public void sort(int[] data) { (jY.S|%
for(int i=data.length/2;i>2;i/=2){ + 6r@HK`,t
for(int j=0;j insertSort(data,j,i); n{4&('NRFP
} P[XE5puC
} ;1{S"UY
insertSort(data,0,1); N@Slc
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} %l:%c
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/** 4pA<s-
* @param data Ta/G
* @param j :Oq!.uO
* @param i B TcxBh
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private void insertSort(int[] data, int start, int inc) { G-"#3{~2
int temp; *#UDMoz<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0C3Yina9
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快速排序: ^o?.Rph|i]
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package org.rut.util.algorithm.support; & rw|fF|]
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import org.rut.util.algorithm.SortUtil; 9SAyU%mS:
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/** !7%L%~z^
* @author treeroot k(VA5upCs
* @since 2006-2-2 aN;L5;m#>{
* @version 1.0 ZV;#ZXch
*/ D"A`b{z
public class QuickSort implements SortUtil.Sort{ OkzfQ
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/* (non-Javadoc) zKiKda%)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Qw,L;R
*/ 83TN6gW
public void sort(int[] data) { qQpR gzw
quickSort(data,0,data.length-1); $)7-wCl</
} Lk3@Eu)
private void quickSort(int[] data,int i,int j){ (''`Ce
int pivotIndex=(i+j)/2; 3QV|@5L`[
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SortUtil.swap(data,pivotIndex,j); sF|<m)Kt{W
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int k=partition(data,i-1,j,data[j]); Iupk+x>
SortUtil.swap(data,k,j); b;x^>(It
if((k-i)>1) quickSort(data,i,k-1); bd)A6a\h
if((j-k)>1) quickSort(data,k+1,j); sBRw#xyS
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} ^vG*8,^S=8
/** 8swj'SjX
* @param data |L`w4;
* @param i /6 P()Upe
* @param j xTAC&OCk^[
* @return y'4=
*/ ! *pK#
private int partition(int[] data, int l, int r,int pivot) { o"UqI
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vaK$j!%FE
SortUtil.swap(data,l,r); rm"bplLZA
} W*U\79H
while(l SortUtil.swap(data,l,r); AeUwih.
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return l; FirmzB Il5
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改进后的快速排序: KtV_DjH:
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package org.rut.util.algorithm.support; ^'FY!^dE
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import org.rut.util.algorithm.SortUtil; .`,YUr$.
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/** 0kC!v,
* @author treeroot Sm,%>
* @since 2006-2-2 <cepRjDn
* @version 1.0 iY*Xm,#
*/ }"xC1<]
public class ImprovedQuickSort implements SortUtil.Sort { *;o=hM)Tp
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private static int MAX_STACK_SIZE=4096; *AxKV5[H
private static int THRESHOLD=10; \:"s*-
/* (non-Javadoc) Bxm^Arc>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) elP`5BuN
*/ 40q8,M
public void sort(int[] data) { U 2\{(y
int[] stack=new int[MAX_STACK_SIZE]; NO9Jre
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int top=-1; Xb;CY9&
int pivot; AK[9fxrE
int pivotIndex,l,r; ADHe![6q
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stack[++top]=0; jRq>Sz{8
stack[++top]=data.length-1; BHFWig*{
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while(top>0){ V?5_J%
int j=stack[top--]; //6m2a
int i=stack[top--]; =2`s Uw}
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pivotIndex=(i+j)/2; UGR5ILf
pivot=data[pivotIndex]; b/S4b
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SortUtil.swap(data,pivotIndex,j); KN+*_L-
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do{ Vr5a:u'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Lw!@[;2
SortUtil.swap(data,l,r); TWxMexiW
} ,P9B8oIq
while(l SortUtil.swap(data,l,r); gk]r:p<