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。 :#D~j]pP
插入排序: [2!C^\t
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package org.rut.util.algorithm.support; |7${E^u
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import org.rut.util.algorithm.SortUtil; X8wtdd]64
/** KN>h*eze
* @author treeroot _hMFmI=r[
* @since 2006-2-2 +=sw&DH
* @version 1.0
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*/ bD-OEB
public class InsertSort implements SortUtil.Sort{ B>@l(e)b
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/* (non-Javadoc) qd<I;*WV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '%YE#1*gH
*/ 8s
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public void sort(int[] data) { >*Ej2ex
int temp; WpRM|"CF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UD9JE S,
} EV7lgKM^
} &xp]9$
} l=x(
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} 2jxIr-a1G
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冒泡排序: X#zp,7j?
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package org.rut.util.algorithm.support; :}-?X\|\
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import org.rut.util.algorithm.SortUtil; vKfjP_0$
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/** -!K&\hEjj
* @author treeroot k|{ 4"4r
* @since 2006-2-2 %jHe_8=o
* @version 1.0 1U?5/Ja
*/ zg$ag4%Qgg
public class BubbleSort implements SortUtil.Sort{ #Tt*NU
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/* (non-Javadoc) O%haaL\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &gUa^5'#
*/ 6Nt/>[
public void sort(int[] data) { 7p1B"%
int temp; z 7+>G/o
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0Ue~dVrM(?
if(data[j] SortUtil.swap(data,j,j-1); N
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} \jmZt*c
} eN\+
} L\t_zf_0
} K}2G4*8S_G
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} K\59vtga
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选择排序: /Gn0|]KI
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package org.rut.util.algorithm.support; )dh`aQ%N "
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import org.rut.util.algorithm.SortUtil; Hsd76z#8
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/** c((bUjS'=Y
* @author treeroot lJdYR'/Wd
* @since 2006-2-2 j;
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* @version 1.0 ^@{"a
*/ 3s67)n
public class SelectionSort implements SortUtil.Sort { <]X6%LX
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/* xGOVMo
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* (non-Javadoc) !IA\c(c^
* .!Kqcz% A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M{)&SNI*C
*/ j%Xa8$
public void sort(int[] data) { B2a#:E,6
int temp; /Ov1eQBNG
for (int i = 0; i < data.length; i++) { W/}_ y8q
int lowIndex = i; L#J2J$=
for (int j = data.length - 1; j > i; j--) { &`m$Zzl;
if (data[j] < data[lowIndex]) { #9F>21UU
lowIndex = j; E31YkD.A
} V!>j:"
} 9v?@2sOoE
SortUtil.swap(data,i,lowIndex); ~sPXkLqK
} 1[$zdv{A
} W0Y
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} p\9}}t7n
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Shell排序: @65xn)CD{
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package org.rut.util.algorithm.support; ^!0z+M:>^
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import org.rut.util.algorithm.SortUtil; V|[NL4
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/** +!!G0Zj/
* @author treeroot K+XUC
* @since 2006-2-2 %5DM ew
* @version 1.0 e-[PuJ
*/ SynRi/BRmw
public class ShellSort implements SortUtil.Sort{ ?u/UV,";y
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/* (non-Javadoc) 'W>y v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <RZqs
*/ #f HnM+
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ ^SKHYo`,,N
for(int j=0;j insertSort(data,j,i); [u37Hy_Gi
} L F } d
} ! K_<hNG&
insertSort(data,0,1); E_DQ.!U!o
} odC"#Rb
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/** U zc p
* @param data au/LoO#6Ro
* @param j VJT /9O)Z|
* @param i {"%a-*@%
*/ kh:_,g
private void insertSort(int[] data, int start, int inc) { Lo#G. s|
int temp; x[Hx.G}5+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); peT91b
} _ DT,iF*6
} CCol>:8{P
} JbS[(+o
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} &qWB\m
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快速排序: P}UxA!
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package org.rut.util.algorithm.support; @ =~k[o
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import org.rut.util.algorithm.SortUtil; |+::sL\r
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/** N6\rjYx+7
* @author treeroot `O%nDry
* @since 2006-2-2 b;5j awG
* @version 1.0 9+PAyI#w
*/ xW*Lceb
public class QuickSort implements SortUtil.Sort{ 5`+9<8V
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/* (non-Javadoc) "~._G5i.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {i?G:K
*/ ge.>#1f}
public void sort(int[] data) { KK2YT/K$SG
quickSort(data,0,data.length-1); {*TB }Xsr,
} -m=A1~|7
private void quickSort(int[] data,int i,int j){ ~;H,cPvrEg
int pivotIndex=(i+j)/2; 9d-'%Q>+
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SortUtil.swap(data,pivotIndex,j); =_z o
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int k=partition(data,i-1,j,data[j]); _ahp7-O
SortUtil.swap(data,k,j); $p4e8j[EJ
if((k-i)>1) quickSort(data,i,k-1); G9LWnyQt
if((j-k)>1) quickSort(data,k+1,j); Sw,*#98
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} +Ln^<!P
/** GD]epr%V
* @param data ".$kOH_:
* @param i 'j,
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* @param j 0XCAnMVo
* @return 6QbDU[
*/ LjE3|+pJ
private int partition(int[] data, int l, int r,int pivot) { G?=&\fg_:
do{ =xRD
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xH{-UQ3R
SortUtil.swap(data,l,r); LQ4:SV'3
} 9N)I\lcY
while(l SortUtil.swap(data,l,r); ![\P/1p
return l; { +w.Z,D"
} w9VwZow
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} : slO0
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改进后的快速排序: B=~y(Mb
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package org.rut.util.algorithm.support; .R"VLE|
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import org.rut.util.algorithm.SortUtil; .Y]0gi8z
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/** ksOsJ~3)
* @author treeroot qve'Gm)
* @since 2006-2-2 La9}JvQoX
* @version 1.0 u*P@Nuy6
*/ E
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public class ImprovedQuickSort implements SortUtil.Sort { f7\X3v2W}3
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private static int MAX_STACK_SIZE=4096; 4c 8{AZ
private static int THRESHOLD=10; l1'v`!
/* (non-Javadoc) k)*apc\W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Q<7[
*/ +
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public void sort(int[] data) { *->*p35
int[] stack=new int[MAX_STACK_SIZE]; mHW%:a\L
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int top=-1; vr4r,[B6y
int pivot; gggD "alDx
int pivotIndex,l,r; 2XeyNX
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stack[++top]=0; d wG!]j>:_
stack[++top]=data.length-1; 76@W:L*J$J
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while(top>0){ 0 {z8pNrc
int j=stack[top--]; 1~K'r&
int i=stack[top--]; J QnaXjW2
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pivotIndex=(i+j)/2; G>0d^bx;E
pivot=data[pivotIndex]; gs3(B/";c
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SortUtil.swap(data,pivotIndex,j); W0 sLMHq
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file://partition E9j<+Ik
l=i-1; -_5Dk'R#`
r=j; ZM -P
do{ Gkem _Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T%6JVFD
SortUtil.swap(data,l,r); "X2'k@s`
} ]goJ- &
while(l SortUtil.swap(data,l,r); a<\n$E#q
SortUtil.swap(data,l,j); D|)_c1g
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if((l-i)>THRESHOLD){ 06 %-tAq:
stack[++top]=i; \UZGXk
stack[++top]=l-1; RVwS<g)~1
} EMO{u
if((j-l)>THRESHOLD){ N6-7RoA+
stack[++top]=l+1; 5Z; 5?\g
stack[++top]=j; lPxhqF5pP
} "zY~*3d
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} +%\Ci!%b
file://new InsertSort().sort(data); CqC
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insertSort(data); $eI
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} 81y<Uz 6
/** 0{
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* @param data F<p`)?
*/ v LN KX;9
private void insertSort(int[] data) { rD <T
int temp; 5)XUT`;'){
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !;&\n3-W
} PVlCj
} o5&b'WUJ=
} :
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} ,hI$nF0}p
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归并排序: V':A!
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package org.rut.util.algorithm.support; t adeG
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import org.rut.util.algorithm.SortUtil; f?/OV *
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/** {f`Y\_r$@
* @author treeroot SF;\*]["f
* @since 2006-2-2 E3j`e>Yz
* @version 1.0 EoPvF`T
*/ t27UlFX
public class MergeSort implements SortUtil.Sort{ 9;6)b0=$
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/* (non-Javadoc) WZ6{9/%:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <t(H+ykh
*/ [Lje?M* r
public void sort(int[] data) { -JEPh!oTt
int[] temp=new int[data.length]; CtN\-E-
mergeSort(data,temp,0,data.length-1); PRiE2Di2S
}
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private void mergeSort(int[] data,int[] temp,int l,int r){ v]on0Pi!
int mid=(l+r)/2; Rl cL(HM
if(l==r) return ; )tJaw#Mih
mergeSort(data,temp,l,mid); Ix_w.f=8
mergeSort(data,temp,mid+1,r); s) s9Z,HY
for(int i=l;i<=r;i++){ ($<&H>j0
temp=data; `+< ^Svou
} Brs6RkRf
int i1=l; q%d'pF
int i2=mid+1; x f{`uHa8
for(int cur=l;cur<=r;cur++){ u
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if(i1==mid+1) d.w]\
data[cur]=temp[i2++]; Mn&_R{{=
else if(i2>r) !l#aq\:}~e
data[cur]=temp[i1++]; i ?pd|J
else if(temp[i1] data[cur]=temp[i1++]; Dom]w.W5
else ,\
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data[cur]=temp[i2++]; KNN{2thy `
} I$sXbM;z=
} hfIP
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} V Zbn@1
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改进后的归并排序: mYo~RXKGF
L9e<hRZ$
package org.rut.util.algorithm.support; 3HuocwWbz
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import org.rut.util.algorithm.SortUtil; ^#e|^]]
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/** nt&%
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* @author treeroot `%Kj+^|DS
* @since 2006-2-2 5G2ueRVb
* @version 1.0 < <0[PJ
*/ >\'}&oi
public class ImprovedMergeSort implements SortUtil.Sort { 5IzCQqOPgX
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private static final int THRESHOLD = 10; ;^E\zs
l_04b];
/* 9_svtO ]P
* (non-Javadoc) @S~n^v,)
* \cX9!lHl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %sZ3Gpi
*/ 8N j}
public void sort(int[] data) { _(=g[=Mer
int[] temp=new int[data.length]; G]xN#O;
mergeSort(data,temp,0,data.length-1); qD"~5vtLqQ
} )Mflt0fp
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