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。 $GVf;M2*
插入排序: EPM(hxCIQ
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package org.rut.util.algorithm.support; buHUBn[3)
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import org.rut.util.algorithm.SortUtil; 9~ifST\
/** W7 +Q&4Y
* @author treeroot ]ij:>O@{$
* @since 2006-2-2 5yp
* @version 1.0 - @KT#
*/ j92+kq>Xd
public class InsertSort implements SortUtil.Sort{ 3 >^B%qg6
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/* (non-Javadoc) HBw0N?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /#}%c'
*/ 7/\SN04l
public void sort(int[] data) { / $'M
int temp; PG'I7)Bv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P[e#j
} iT1HbAT]
} !V/p.O
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冒泡排序: prxmDI
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package org.rut.util.algorithm.support; 4Q\~l(
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import org.rut.util.algorithm.SortUtil; Bv`3T Af2
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/** 1EHNg<J(
* @author treeroot
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* @since 2006-2-2 UZE%!OWpeK
* @version 1.0 p+{*w7?8"[
*/ @T sdgx8
public class BubbleSort implements SortUtil.Sort{ 9(BB>o54r
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/* (non-Javadoc) <Q.-WV]Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `=8G?3
*/ U9R pHh`
public void sort(int[] data) { jLBwPI_g
int temp; o5NrDDH
for(int i=0;i for(int j=data.length-1;j>i;j--){ E8We2T[^M
if(data[j] SortUtil.swap(data,j,j-1); |U="B4
} td2bL4
} q -^Z=,<
} }5"19
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} yMf["AvG
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选择排序: y;HJ"5.Mw
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package org.rut.util.algorithm.support; `Y7&}/OM
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import org.rut.util.algorithm.SortUtil; Rs 0Gqx
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/** ' :,p6
* @author treeroot ivi&;
* @since 2006-2-2 DVRbTz3V
* @version 1.0 7me1:}4
*/ =v=H{*dWA
public class SelectionSort implements SortUtil.Sort { [0n&?<<
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/* \"A~ks~
* (non-Javadoc) 'gz@UE1
* @nF#\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"[O=h:
*/ ]F,v#6qi
public void sort(int[] data) { LD}ZuCp!
int temp; O.P:~
for (int i = 0; i < data.length; i++) { $e![^I]`
int lowIndex = i; %:.00F([r
for (int j = data.length - 1; j > i; j--) { a7l-kG=R;
if (data[j] < data[lowIndex]) { Hd=!
lowIndex = j; oJEjg>%n
} n15lX,FI
} C`C$i>X7^
SortUtil.swap(data,i,lowIndex); ]i:O+t/U
} C)Hb=
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} w1|YR
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Shell排序: 3`m
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package org.rut.util.algorithm.support; q
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import org.rut.util.algorithm.SortUtil; ?QCHkhU
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/** 0@8EIQxK"
* @author treeroot ||k^pzj%
* @since 2006-2-2 ]#x?[F
* @version 1.0 B(dq$+4
*/ LP:C9Ol\
public class ShellSort implements SortUtil.Sort{ !/MHD
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/* (non-Javadoc) 0sKY;(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z"G@I= Q(
*/ KA$l.6&d
public void sort(int[] data) { NFcMh+qnK
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); bi[gyl#
} lTpmoDa%
}
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insertSort(data,0,1); /S+gh;2OC
} l %{$CmG\
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/** I-
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* @param data i<nUp1r(
* @param j @[4 Tdf
* @param i W.AN0N
*/ g&"__~dS-F
private void insertSort(int[] data, int start, int inc) { C/Dc1sj
int temp; 9*}?0J8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =-dk@s
} \[w82%U
} B?r [|
} nzHsyL
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} D0=H&Z[
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快速排序: d`;_~{sleR
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package org.rut.util.algorithm.support; +kKfx!
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import org.rut.util.algorithm.SortUtil; ye)CfP=ID\
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/** G6(U\VFqO
* @author treeroot ;yO7!{_
* @since 2006-2-2 +<P%v k
* @version 1.0 ')/yBH9mR
*/ Dh|8$(Jt
public class QuickSort implements SortUtil.Sort{ =@>[
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/* (non-Javadoc) ggUJ -M'2h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yA+:\%y$
*/ 0g@
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public void sort(int[] data) { c91rc>
quickSort(data,0,data.length-1); 5M2G ;o
} K?q1I<94
private void quickSort(int[] data,int i,int j){ S5Q$dAL
int pivotIndex=(i+j)/2; {uRnZ/m
file://swap YRYAQj/7
SortUtil.swap(data,pivotIndex,j); Y&k6Xhuao
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int k=partition(data,i-1,j,data[j]); iS^IqS
SortUtil.swap(data,k,j); /CAi%UH,F
if((k-i)>1) quickSort(data,i,k-1); S&@uY#_(*T
if((j-k)>1) quickSort(data,k+1,j); xhIC["z5
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} $b/oiy!=|3
/** ^MesP:[2
* @param data bb6J$NR
* @param i %<q l
* @param j gekW&tRie
* @return b"y][5VE
*/ =M'y& iz-
private int partition(int[] data, int l, int r,int pivot) { $!<J_d*
do{ A({8p
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mzz77i
SortUtil.swap(data,l,r); Y,kTk
} 8qfg=mu+%
while(l SortUtil.swap(data,l,r); ZgL4$%
return l; MeqW/!72$L
} I"^ `!8<q
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} zR_#c3o
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改进后的快速排序: D^Bd>Ey4
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package org.rut.util.algorithm.support; p-zWfXn!P
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import org.rut.util.algorithm.SortUtil; A|V
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/** c ZN+D D
* @author treeroot P"%i 4-S
* @since 2006-2-2 "]ow1{
* @version 1.0 -So&?3,\A@
*/ [g_Cg=J
public class ImprovedQuickSort implements SortUtil.Sort { Z_Ox '
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private static int MAX_STACK_SIZE=4096; SB1\SNB
private static int THRESHOLD=10; @O<kjR<b
/* (non-Javadoc) xr)Rx{)3h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t,;1?W#
*/ vIrLG1EK
public void sort(int[] data) { C
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int[] stack=new int[MAX_STACK_SIZE]; /I3#WUc;![
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int top=-1; ;SF0}51
int pivot; iq
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int pivotIndex,l,r;
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stack[++top]=0; !Re/W
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stack[++top]=data.length-1; ,>n 4
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while(top>0){ hSc$Sa8
int j=stack[top--]; b<qv
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int i=stack[top--]; ysfR@ sH7
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pivotIndex=(i+j)/2; +d6/*}ht
pivot=data[pivotIndex]; !ec\8Tj
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SortUtil.swap(data,pivotIndex,j); &%`IPhbT
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file://partition YBN.
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do{ 4`G":nE?We
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4w^B&e%
SortUtil.swap(data,l,r); 1sZwW P
} Xi_>hL+R(
while(l SortUtil.swap(data,l,r); :cop0;X:Wm
SortUtil.swap(data,l,j); pJx88LfR
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if((l-i)>THRESHOLD){ '|<