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。 (V}?y:)
插入排序: e\ZV^h}TQ
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package org.rut.util.algorithm.support; 5z.Y}
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import org.rut.util.algorithm.SortUtil; F:Yp1Wrb <
/** E]pDp
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* @author treeroot XCGK&OGI
* @since 2006-2-2 y+',jM
* @version 1.0 8%Ak
*/ C)cuy7<
public class InsertSort implements SortUtil.Sort{ QwnqysNx4
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/* (non-Javadoc) V|2[>\Cv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wk2Ff*&
*/ b:x~Jz#%2
public void sort(int[] data) { Nm#[ A4
int temp; j9f Q V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p3IhK>
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冒泡排序: s[t?At->
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package org.rut.util.algorithm.support; M?qvI
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import org.rut.util.algorithm.SortUtil; ,UxAHCR~9
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/** Bf$`Hf6
* @author treeroot /b."d\
* @since 2006-2-2 !wo
* @version 1.0 g7v(g?
*/ `>HrO}x^
public class BubbleSort implements SortUtil.Sort{ S3y('
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/* (non-Javadoc) D1wONss
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ($,qxPOn
*/ acow
public void sort(int[] data) { +6(\7?
int temp; "|/Q5*L
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wfsd$kN6{
if(data[j] SortUtil.swap(data,j,j-1); O-n JuZJgX
} "6i3'jc`
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选择排序: se29IhS!e
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package org.rut.util.algorithm.support; C ~04#z_$
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import org.rut.util.algorithm.SortUtil; 1/J6<FVq
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/** "-Wb[*U;
* @author treeroot wotw nE
* @since 2006-2-2 <sls1,
* @version 1.0 v4,Dt
*/ -]Q\G
public class SelectionSort implements SortUtil.Sort { Yzw[.(jc}
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/* &W{v(@
* (non-Javadoc) gzN51B =D
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _IWLC{%V
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public void sort(int[] data) { 4B)%I`
int temp; XJ7pX1nf
for (int i = 0; i < data.length; i++) { DTHWL
int lowIndex = i; -s]@8VJA"
for (int j = data.length - 1; j > i; j--) { Zr[B*1,ZV
if (data[j] < data[lowIndex]) { `i<Z<
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lowIndex = j; ^%!#Q].
} @4n>I+6*&
} wZWAx
SortUtil.swap(data,i,lowIndex); L[!||5y
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Shell排序: `@#rAW D
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package org.rut.util.algorithm.support; 9*r^1PRc
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import org.rut.util.algorithm.SortUtil; ~0@fK<C)O
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/** bP> Kx-%q
* @author treeroot I5 qrHBJ >
* @since 2006-2-2 Fu5c_"!
* @version 1.0 IhOAMH1
*/ -+0kay%
public class ShellSort implements SortUtil.Sort{ wxYGr`f
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/* (non-Javadoc) d</F6aM\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'gHg&E9E&
*/ Kxg@( Q
public void sort(int[] data) { AQmHa2P
for(int i=data.length/2;i>2;i/=2){ 5{bc&?"
for(int j=0;j insertSort(data,j,i); XK})?LTD
} vrcIwCa
} V1~@
insertSort(data,0,1); >F s/Wet
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/** )]s<Czm%
* @param data ncMzHw
* @param j 2;0eW&e
* @param i =1@LMIi5x
*/ 9g>)7Ne
private void insertSort(int[] data, int start, int inc) { _^NyLI%
int temp; 2`TV(U@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uxB`
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快速排序: Od)y4nr3~
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package org.rut.util.algorithm.support; y^ |u'XK
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import org.rut.util.algorithm.SortUtil; ');vc~C
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/** U||GeEd
* @author treeroot 23WrJM!2N
* @since 2006-2-2 ,w3-*z
* @version 1.0 o~)o/(>ox
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public class QuickSort implements SortUtil.Sort{ 1P*hC<
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/* (non-Javadoc) bWAa:
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sQac%.H;`U
*/ YrB-n
public void sort(int[] data) { Uq$/Q7
quickSort(data,0,data.length-1); 9$HBKcO
} 7XK0vKmW3
private void quickSort(int[] data,int i,int j){ 66,(yxg
int pivotIndex=(i+j)/2; #$x,PeG
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SortUtil.swap(data,pivotIndex,j); (8)9S6
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int k=partition(data,i-1,j,data[j]); &h5Y_no GX
SortUtil.swap(data,k,j); ^`'\eEa
if((k-i)>1) quickSort(data,i,k-1); 4,z|hY_*t
if((j-k)>1) quickSort(data,k+1,j); Y=O+d\_W
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} [
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/** TZ5TkE;1
* @param data KE~Q88s
* @param i =g9n =spAn
* @param j M7cD!s@'I
* @return Z%]K,9K
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private int partition(int[] data, int l, int r,int pivot) { ,3Q~X$f
do{ A-T-4I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m0TV i] v
SortUtil.swap(data,l,r); 2c 0;P
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} Y
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while(l SortUtil.swap(data,l,r); ~p?ArZb
return l; z&amYwQcI
} ['=O>YY
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改进后的快速排序: $h{m")]
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package org.rut.util.algorithm.support; Y:ly x-lj
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import org.rut.util.algorithm.SortUtil; /=m AVA
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/** TjTG+uQ
* @author treeroot v"o"W[
* @since 2006-2-2 :@[\(:
* @version 1.0 SWV*w[X<X
*/ pD%(Y^h?
public class ImprovedQuickSort implements SortUtil.Sort { [! $NTt_
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private static int MAX_STACK_SIZE=4096; Kq3c Kp4
private static int THRESHOLD=10; \Mg_Q$
/* (non-Javadoc) z!"vez
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }8ubGMr,Y
*/ 2e1KF=N+
public void sort(int[] data) { T?pS2I~
int[] stack=new int[MAX_STACK_SIZE]; XGx[Ny_A2
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int top=-1; p"ytt|H
int pivot; &