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。 ]<ay_w;
插入排序: mKE'l'9A_
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package org.rut.util.algorithm.support; WZjR^6
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import org.rut.util.algorithm.SortUtil; nET<u;
/** rLY I\
* @author treeroot Q );}1'c
* @since 2006-2-2 xOr"3;^
* @version 1.0 I *f@M}
*/ 1d842pt
public class InsertSort implements SortUtil.Sort{ IF@vl
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/* (non-Javadoc) tR4+]K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kyZZ0
*/ 6;@:/kl t
public void sort(int[] data) { e|>@ >F]K
int temp; JaR!9GVN7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AFeFH.G6Jr
} >L8 &6aU
} T!pA$eE
} DjiI*HLNR
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} /!.]Y8yEH
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冒泡排序: i5_l//]
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package org.rut.util.algorithm.support; Bk@EQdn
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import org.rut.util.algorithm.SortUtil; Qs?p)3qp
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/** (dy:d^
* @author treeroot G)f!AuN=
* @since 2006-2-2 ;>fM?ae5
* @version 1.0 ]3Ibl^J
*/ T-iQ!D~
public class BubbleSort implements SortUtil.Sort{ _ /Eg_dQ~@
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/* (non-Javadoc) 3hEbM'L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !w0=&/Y{R
*/ t!u>l
public void sort(int[] data) { |+JC'b?,
int temp; d+5v[x~'
for(int i=0;i for(int j=data.length-1;j>i;j--){ V&/Cb&~Uw
if(data[j] SortUtil.swap(data,j,j-1); b2j~"9
} wbk$(P'gN
} gR_Exs'K
} ]US!3R^
} aWP9i&
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选择排序: SLH;iqPT
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package org.rut.util.algorithm.support; !9.\A:G
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import org.rut.util.algorithm.SortUtil; J$T(p%
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/** |TF6&$>d
* @author treeroot V@EyU/VJ
* @since 2006-2-2 +CXq41g"c
* @version 1.0 LWN9 D
*/ =.):tGDp
public class SelectionSort implements SortUtil.Sort { rZ.z!10
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/* q$`>[&I~)
* (non-Javadoc) )wdd"*hv
* =+[`9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ta'wX
*/ WY5HmNX3E
public void sort(int[] data) { (B?ZUXM,
int temp; C0>L<*C
for (int i = 0; i < data.length; i++) { jz>b>;
int lowIndex = i; '!`]Zc
for (int j = data.length - 1; j > i; j--) { 2p58_^l
if (data[j] < data[lowIndex]) { D^U?!S&4~
lowIndex = j; pTncx%!W5
} b?,=|H
} QR<<O
SortUtil.swap(data,i,lowIndex); 3BF3$_u)o
} $ERiBALN:
} Wdga(8t
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} dOKe}?}==
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Shell排序: 58eO|c(
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package org.rut.util.algorithm.support; C9,Uwz<!]
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import org.rut.util.algorithm.SortUtil; lB8gD
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/**
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* @author treeroot L@ejFXQg
* @since 2006-2-2 8==_43
* @version 1.0 IlB*JJnl
*/ M)H*$!x}>
public class ShellSort implements SortUtil.Sort{ A\13*4:;l
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/* (non-Javadoc) y'non0P.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j[dgY1yE:
*/ h
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public void sort(int[] data) { SzfMQ@~
for(int i=data.length/2;i>2;i/=2){ rFp>A`TJ
for(int j=0;j insertSort(data,j,i); BPVOBL@
} 1jaK N*
} k~fH:X~x
insertSort(data,0,1); e{*yV#Wl
} ofPv?_@
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/** Wv~&Qh}
* @param data @Y}G,i
* @param j =F
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* @param i I~;H'7|e
*/ *M$'dLn
private void insertSort(int[] data, int start, int inc) { <Pi#-r.,
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9`M7 -{
} J"TF@7{p
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} {kr14l*2
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} <;Tr
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快速排序: ,J:Ro N_:
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package org.rut.util.algorithm.support; Fh|{ib
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import org.rut.util.algorithm.SortUtil; hVui.]
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/** 8DM! ]L
* @author treeroot 2waPNb|
* @since 2006-2-2 ydAiH*>
* @version 1.0 |--Jd$ dj
*/ +(^HL3
public class QuickSort implements SortUtil.Sort{ 1I)oT-~
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/* (non-Javadoc) e+MQmWA'F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vhcp[=e :
*/ n|KYcU#
public void sort(int[] data) { B-PX/Q
quickSort(data,0,data.length-1); Q|e-)FS)
} 7R# }AQ
private void quickSort(int[] data,int i,int j){ W+$G{XSr5C
int pivotIndex=(i+j)/2; Qkhor-f0
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SortUtil.swap(data,pivotIndex,j); oYt 34@{?
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int k=partition(data,i-1,j,data[j]); =|8hG*D8
SortUtil.swap(data,k,j); `csZ*$7
if((k-i)>1) quickSort(data,i,k-1); OHrzN']
if((j-k)>1) quickSort(data,k+1,j); K<kl2#
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} *[|+5LVn
/** -3guuT3x\
* @param data iRbe$v&N
* @param i ge<D}6GQ
* @param j m^=El7+
* @return Aa4Tq2G
*/ U4<c![Pp.
private int partition(int[] data, int l, int r,int pivot) { 4 Tw~4b
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u05Yy&(f
SortUtil.swap(data,l,r); 5t"FNL
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} ${eV3LSC
while(l SortUtil.swap(data,l,r); i];P!Gm
return l; Ip:54
} #<ST.f@*
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} -a &<Un/
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改进后的快速排序: 32j}ep.*
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package org.rut.util.algorithm.support; z|X6\8f
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import org.rut.util.algorithm.SortUtil; |_>^vW1f
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/** Q2uV/M1?
* @author treeroot B4wRwrVI>
* @since 2006-2-2 Y[dq"
* @version 1.0 $LFL4Q
*/ R&J?XQ
public class ImprovedQuickSort implements SortUtil.Sort { ovBmo2W/
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private static int MAX_STACK_SIZE=4096; XWyP'\
private static int THRESHOLD=10; \7"|'fz
/* (non-Javadoc) 'A3skznX{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |K06H
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*/ ^W,5A;*3
public void sort(int[] data) { 8.Y|I5l7G
int[] stack=new int[MAX_STACK_SIZE]; Xq&BL,lS
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int top=-1; T9H*]LxK
int pivot; Vm>E F~ r
int pivotIndex,l,r; ZcQu9XDIt
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stack[++top]=0; So'.QWzX
stack[++top]=data.length-1; mpMAhm:
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while(top>0){ uMS+,dXy
int j=stack[top--]; ;ryNfP%
int i=stack[top--]; W%-XN
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pivotIndex=(i+j)/2; rUj\F9*5#
pivot=data[pivotIndex]; *_o(~5w-K
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SortUtil.swap(data,pivotIndex,j); AXW.`~ 4
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file://partition r(46jV.sD:
l=i-1; 0f.jW O
r=j; wG3b{0
do{ aQtd6L+ J
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bj`\;_oo
SortUtil.swap(data,l,r); `KFEzv
} N8{jvat
while(l SortUtil.swap(data,l,r); 1x:W 3.
SortUtil.swap(data,l,j); C,Nf|L((6
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if((l-i)>THRESHOLD){ Qs6Vu)U=
stack[++top]=i; 7"!b5(4=
stack[++top]=l-1; v$|~
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} '|[V}K5m/f
if((j-l)>THRESHOLD){ Q=`yPK>{$N
stack[++top]=l+1; xR/CP.dg
stack[++top]=j; :ZV|8xI
} 3R+%C* 7
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} h|CZ~
file://new InsertSort().sort(data); 3' i6<
insertSort(data); i[!|0U`p
} #1DEZ4]jjY
/** j Q5 F}
* @param data 7__[=)(b2X
*/ Q[biy{(b8
private void insertSort(int[] data) { XB7Aa)
int temp; nF <K84
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ES~b f
} .h-mFcjy
} ga5Q
} im2mA8OH
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} ]F4QZV(
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归并排序: .SD-6GVD
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package org.rut.util.algorithm.support; o5o myMN
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import org.rut.util.algorithm.SortUtil; >Ku4Il+36
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/** ,8@<sFB'
* @author treeroot -V/y~/]J
* @since 2006-2-2 )D+BvJ Y"
* @version 1.0 <=M5)#
*/ I%YwG3uR
public class MergeSort implements SortUtil.Sort{ 1<r!9x9G
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/* (non-Javadoc) XV]N}~h o`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |OH*c3~r
*/ Nk7y2[
public void sort(int[] data) { $6rm;UH
int[] temp=new int[data.length]; zm&[K53
mergeSort(data,temp,0,data.length-1); Ei!Z]jeK
} ^4n#''wJ
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private void mergeSort(int[] data,int[] temp,int l,int r){ f24W*#IX
int mid=(l+r)/2; ``l*;}
if(l==r) return ; J@5iD
mergeSort(data,temp,l,mid); Ib..X&N2
mergeSort(data,temp,mid+1,r); KU|W85ye
for(int i=l;i<=r;i++){ /~NX<Ye&
temp=data; qp})4XT v
} 1>Sfv|ZP,
int i1=l; %1i:*~g
int i2=mid+1; :uCwWv
for(int cur=l;cur<=r;cur++){ syl7i>P
if(i1==mid+1) pJHdY)Cz
data[cur]=temp[i2++]; }yT/UlU
else if(i2>r) I$;`^z
data[cur]=temp[i1++]; \?n6l7*t>
else if(temp[i1] data[cur]=temp[i1++]; 7Eyi~jes
else w%])
data[cur]=temp[i2++]; a=MN:s?Fc0
} )E9!m
} =yod
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} s<YN*~
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改进后的归并排序: apL$`{>US
r&LZH.$oh
package org.rut.util.algorithm.support; :!aLa}`@
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import org.rut.util.algorithm.SortUtil; yj:@Fg-3g
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/** u>
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* @author treeroot [Mu9"kF
* @since 2006-2-2 s@Q7F{z
* @version 1.0 $mJv\;t
*/ $ar^U
public class ImprovedMergeSort implements SortUtil.Sort { "1a;);S=*)
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private static final int THRESHOLD = 10; (_pw\zk>
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/* n-9xfn0U~#
* (non-Javadoc) HT.,BF
* do8[wej<:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xT>9ZZcE
*/ 'Ix@<$~i3F
public void sort(int[] data) { zmhc\M?z
int[] temp=new int[data.length]; z6`0Uv~
mergeSort(data,temp,0,data.length-1); eA&