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。 AhCW'.
插入排序: 4qphA9i1
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package org.rut.util.algorithm.support; -0d0t!
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import org.rut.util.algorithm.SortUtil; S$f9m
/** FGPB:
* @author treeroot _A M*@|p,
* @since 2006-2-2 Qn^'
* @version 1.0 6 +Sxr
*/ BIb4h
public class InsertSort implements SortUtil.Sort{ __lM7LFL
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/* (non-Javadoc) :lX!\(E2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hv)x=e<
*/ 00<cYy
public void sort(int[] data) { HpR]q05d
int temp; d4m=0G`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .0p0_f=
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冒泡排序:
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package org.rut.util.algorithm.support; }xKP~h'F
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import org.rut.util.algorithm.SortUtil; PvR6
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/** Xk:OL,c
* @author treeroot Y}@&h!
* @since 2006-2-2 ZkgV_<M|
* @version 1.0 KMt`XaC9e
*/ B6=ebM`q
public class BubbleSort implements SortUtil.Sort{ ,c$,!.r
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/* (non-Javadoc) 32l3vv.j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a! (4Ch
*/ v.\*./-i
public void sort(int[] data) { -Btk 3
int temp; 2;xIL]
for(int i=0;i for(int j=data.length-1;j>i;j--){ fTzvmC:g7
if(data[j] SortUtil.swap(data,j,j-1); h,QKd>4:CF
} `{4i)n%e&
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选择排序: )Z[ft
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package org.rut.util.algorithm.support; 5&xB6|k
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import org.rut.util.algorithm.SortUtil; <CRP^_c
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/** fz;iOjr>
* @author treeroot "X2 Vrn'
* @since 2006-2-2 w'L\?pI
* @version 1.0 ~L]|?d"
*/ |].pDwgt
public class SelectionSort implements SortUtil.Sort { \Fl+\?~D
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/* ko1J094Y%
* (non-Javadoc) JROM_>mC
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 m5p_\&
*/ @HT% n
public void sort(int[] data) { hZ[E7=NTQ^
int temp; _AYXc] 4%
for (int i = 0; i < data.length; i++) { 0?sRDYaX;c
int lowIndex = i; U93}-){m
for (int j = data.length - 1; j > i; j--) { $`APHjijN
if (data[j] < data[lowIndex]) { uC.K<jD%
lowIndex = j; tc_286'x
} D@G\7KH@
} )64@2~4y
SortUtil.swap(data,i,lowIndex); BeCWa>54i
} ^
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Shell排序: C?ulj9=Z
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; Z -,J)gW
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/** ]'5;|xc9$/
* @author treeroot :!/gk8F|dI
* @since 2006-2-2 ^Y<|F!0
* @version 1.0 FSU ttg"
*/ qs|mj}?
public class ShellSort implements SortUtil.Sort{ .7zK@6i
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/* (non-Javadoc) A"`foI$0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dX\.t<
*/ "8'@3$>R=
public void sort(int[] data) { 3VuW#m#j
for(int i=data.length/2;i>2;i/=2){ +${D
for(int j=0;j insertSort(data,j,i); V I,ACj
} 6}75iIKi
} ";BlIovT=R
insertSort(data,0,1); 9V,!R{kO!
} $=5=NuX
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/** R E}?5XHb
* @param data 1h>yu3O
* @param j 1?)Xp|O
* @param i bB
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*/ >:zK?(qu,N
private void insertSort(int[] data, int start, int inc) { "+\ lws
int temp; h tx;8:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f}Np/
} vgD {qg@
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快速排序: _8Z_`@0
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package org.rut.util.algorithm.support; Q9Uf.Lh2
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import org.rut.util.algorithm.SortUtil; PGYXhwOI
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/** n"+[ :w4
* @author treeroot /R~1Zj2&
* @since 2006-2-2 k4,BNJt'Z
* @version 1.0 ?6(I V]
*/ UJ0<%^f
public class QuickSort implements SortUtil.Sort{ Dw=gs{8D
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/* (non-Javadoc) 3=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Au{<hQ =
*/ ^M%uV
public void sort(int[] data) { %@;6^=
quickSort(data,0,data.length-1); d}LR l" _n
} w$H^q
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private void quickSort(int[] data,int i,int j){ H~GQ;PhRx
int pivotIndex=(i+j)/2; A
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SortUtil.swap(data,pivotIndex,j); b8$gx:aJ>$
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int k=partition(data,i-1,j,data[j]); vohoLeJTj
SortUtil.swap(data,k,j); af#pR&4}
if((k-i)>1) quickSort(data,i,k-1); gzBy?r> r
if((j-k)>1) quickSort(data,k+1,j); `6 /$M!4$
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} u$*56y
/** fGw^:,B
* @param data B;R.# ^@/
* @param i =`*O1a
* @param j ZiYm:$CJ
* @return 6el;Erp
*/ fMGbODAvY
private int partition(int[] data, int l, int r,int pivot) { cE`6uq7p
do{ &FH2fMLQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9R;/*$
SortUtil.swap(data,l,r); {o!KhF:[
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while(l SortUtil.swap(data,l,r); w?zKjqza=v
return l; {GKy'/[
}
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改进后的快速排序: gXonF'
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package org.rut.util.algorithm.support; >w-;Z>3Q@
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import org.rut.util.algorithm.SortUtil; KhCzD[tf
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/** lc2 i`MC
* @author treeroot Z4A!U~
* @since 2006-2-2 W%.v.0
* @version 1.0 j
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*/ |,#t^'S!
public class ImprovedQuickSort implements SortUtil.Sort { rsF\JQk
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private static int MAX_STACK_SIZE=4096; ZunCKc
private static int THRESHOLD=10; VtzI9CD
/* (non-Javadoc) vKq^D(&cl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |o2sbLp
*/ !).}u,*'no
public void sort(int[] data) { Rl qQ
int[] stack=new int[MAX_STACK_SIZE]; i^_#%L
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int top=-1; 1iX)d)(b
int pivot; Nru7(ag1~
int pivotIndex,l,r; qw7@(R'"
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stack[++top]=0; jn%!AH
stack[++top]=data.length-1; MZpK~c1`
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while(top>0){ lqowG!3H
int j=stack[top--]; S#-wl2z
int i=stack[top--]; %'xb%`t
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; I=7Y]w=
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SortUtil.swap(data,pivotIndex,j); "]m+z)lWd
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do{ Q.9qImgN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5GA\xM-
SortUtil.swap(data,l,r); LAP6U.m'd
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while(l SortUtil.swap(data,l,r); 3#vinz
SortUtil.swap(data,l,j); "F3]X)}
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if((l-i)>THRESHOLD){ mCs#.%dU
stack[++top]=i; &X|<@'933
stack[++top]=l-1; {TOmv
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if((j-l)>THRESHOLD){ zVi15P$
stack[++top]=l+1; nLwiCfe
stack[++top]=j; zW}[+el}
} Io|X#\K
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} a8dXH5_
file://new InsertSort().sort(data); TDg@Tg0
insertSort(data); :qR=>n=
} ]Ni;w]KE
/** `/"nTB
* @param data jYVE8Y)my
*/ |+:h|UIUQ
private void insertSort(int[] data) { (=16PYs
int temp; y8s!M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [3W*9j
} ;uqx@sx ;
} `:wvh(
}
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归并排序: >#}2J[2HQ
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package org.rut.util.algorithm.support; QN>7~=`
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import org.rut.util.algorithm.SortUtil; @ct+7v~
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/** ]WUC:6x
* @author treeroot T*I?9d{k
* @since 2006-2-2 tu>{
* @version 1.0 iB1i/l
*/ nRb^<cZf
public class MergeSort implements SortUtil.Sort{ c=[q(|+O!
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/* (non-Javadoc) 0@5E|<