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。 *.L81er5~
插入排序: /| #&px)G
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package org.rut.util.algorithm.support; 4wC+S9I#E^
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import org.rut.util.algorithm.SortUtil; /VmR<C?h
/** R\o<7g-|
* @author treeroot yFDv6yJ.
* @since 2006-2-2 m_?d=o
* @version 1.0 R|O8RlH
*/ 6qcO?U
public class InsertSort implements SortUtil.Sort{ 9Gv[8'I
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/* (non-Javadoc) =]:> "_jN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GKN%Tv:D_
*/ !vG'J\*xc
public void sort(int[] data) { WVVJ
int temp; f|O{#AC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y3Vlp/"rB"
} $)3%U?AP
} #fT*]NN
} m[j70jYe
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} J[f;Xlh
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冒泡排序: x| yEtO&
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package org.rut.util.algorithm.support; c478P=g=5
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import org.rut.util.algorithm.SortUtil; >3z5ww
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/** 8\{^|y9-
* @author treeroot X]P:CY
* @since 2006-2-2 C@th O
* @version 1.0 W 4F \}A
*/ k0T?-iM
public class BubbleSort implements SortUtil.Sort{ 035rPT7-2-
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/* (non-Javadoc) G:zua`u[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Me
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*/ |SyMngIY
public void sort(int[] data) { 0GJn_@hr
int temp; 3B1cb[2y
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'fW6
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if(data[j] SortUtil.swap(data,j,j-1); FQ=@mjh
} zN
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} eImn+_ N3
} ,"B+r6}EF
} Iu$K i
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} -jMJAYj V
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选择排序: lo[.&GD
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package org.rut.util.algorithm.support; )_U<7"~0l
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import org.rut.util.algorithm.SortUtil; xQUu|gtL4
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/** m=YU2!Mb
* @author treeroot qK)73eNSR
* @since 2006-2-2 DZi!aJ
* @version 1.0 ~8lwe*lNV
*/ r/SG 4
public class SelectionSort implements SortUtil.Sort { D9z|VIw8
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/* 9uGrk^<t
* (non-Javadoc) qAw x2fPu
* fFc/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w Xsmn1w9
*/ ~R(%D-k
public void sort(int[] data) { LqA@&H
int temp; eut-U/3: #
for (int i = 0; i < data.length; i++) { ztw@Y|<2
int lowIndex = i; V O3x~E
for (int j = data.length - 1; j > i; j--) { z<yU-m2h
if (data[j] < data[lowIndex]) { q5?# 3 T=
lowIndex = j; JU4qzi
} t+eVR8
} l8?>>.<P=
SortUtil.swap(data,i,lowIndex); ~JaAii{
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} ra
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} 5-M&5f.
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Shell排序: zzxGAVu
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package org.rut.util.algorithm.support; #FNcF>3>
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import org.rut.util.algorithm.SortUtil; JYTP
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/** ~J P=T
* @author treeroot }2e??3
* @since 2006-2-2 l(02W
* @version 1.0 hRCed4qA
*/ ~8]NK&J
public class ShellSort implements SortUtil.Sort{ dxmE3*b`
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }5hqDBK?
*/ V>b\[(=s
public void sort(int[] data) { ?:)]h c
for(int i=data.length/2;i>2;i/=2){ m&?#;J|B$
for(int j=0;j insertSort(data,j,i); +u3=dj"[
} h-%R<[
} nX=$EQiH
insertSort(data,0,1); t]YC"%[S
} 0|a(]a}V*j
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/** {|'E
* @param data ZSG9t2qlv
* @param j \ioH\9
* @param i `|/<\
*/ (Tbw3ENz
private void insertSort(int[] data, int start, int inc) { 4y+< dw
int temp; `5C,N!d8X
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); og
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} Wr( y)D<y}
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快速排序: 7:2WgLo
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package org.rut.util.algorithm.support; 4 XAQVq5
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import org.rut.util.algorithm.SortUtil; D8xmE2%
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/** <?@NRFTe
* @author treeroot 3h *!V6%q
* @since 2006-2-2 @WVcY:1t#
* @version 1.0 sn)3ZA
*/ 6=fSE=]DY
public class QuickSort implements SortUtil.Sort{ {$wjO7Glp
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/* (non-Javadoc) 0`[wpZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m5r7
*/ N9v1[~ bv_
public void sort(int[] data) { ]VD|xm:kj
quickSort(data,0,data.length-1); [_}J F}6
} W#hj 1
private void quickSort(int[] data,int i,int j){ =,UWX3`f
int pivotIndex=(i+j)/2; Ac<Phy-J
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SortUtil.swap(data,pivotIndex,j); "*Tb"
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int k=partition(data,i-1,j,data[j]); hBBUw0"
SortUtil.swap(data,k,j); e8GEoD
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); L{8xlx`
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} CW,Wx: Y
/** l\@)y4
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* @param data ::}{_ Z
* @param i s;6CExH
* @param j FgB&b
* @return [m|YWT=
*/ ~4 `5tb
private int partition(int[] data, int l, int r,int pivot) { Np"exFqN k
do{ j'HZ\_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Bq$rf < W
SortUtil.swap(data,l,r); R~S;sJ& c
} &FF"nE*
while(l SortUtil.swap(data,l,r); [rSR:V?"a
return l; \Ol kM<
} _tYx~J2.Q
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改进后的快速排序: "-+\R}q$
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package org.rut.util.algorithm.support; '2[albxSc
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import org.rut.util.algorithm.SortUtil; n6BQk2l
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/** Ndi9FD3im
* @author treeroot XBp? w
* @since 2006-2-2 j'MO(ev
* @version 1.0 //s:5S<Z
*/ !X;1 }
public class ImprovedQuickSort implements SortUtil.Sort { Pc
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private static int MAX_STACK_SIZE=4096; IX>d`O61*g
private static int THRESHOLD=10; \uaJ@{Vug
/* (non-Javadoc) yrC7F`.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v~@pMA$(h
*/ V{:A3C41
public void sort(int[] data) { USM4r!x
int[] stack=new int[MAX_STACK_SIZE]; d~1gMz+)
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int top=-1; 5Hw~2 ?a,
int pivot; F*3j.lI
int pivotIndex,l,r; p(/dBt[3k
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stack[++top]=0; G}ob<`o|"
stack[++top]=data.length-1; H\0~#(z?.
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while(top>0){ K otrX
int j=stack[top--]; N<IT w/@^
int i=stack[top--]; $Z\.-QE\
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pivotIndex=(i+j)/2; Y]B)'[=h
pivot=data[pivotIndex]; WZ*ws[dVI
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SortUtil.swap(data,pivotIndex,j); 8j=}u/T@F
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file://partition RM!<8fXYD
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