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。 _1jw=5^P\i
插入排序: b0a}ME&1
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package org.rut.util.algorithm.support; ~4)Y#IxL
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import org.rut.util.algorithm.SortUtil; |,}E0G.
/** y67uH4&Vm
* @author treeroot dALK0U
* @since 2006-2-2 A1*4*
* @version 1.0 gKL1c{BV
*/ k_3j
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public class InsertSort implements SortUtil.Sort{ 3:|-#F*k{
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/* (non-Javadoc) 67J*&5? |
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 64D%_8#m
*/ '@:[axu
public void sort(int[] data) { *`KrVu 6s
int temp; 2q%K)h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); , deUsc
} -NDi5i\
} *?8RXer
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} vF>gU_gz.
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冒泡排序: 'XTs
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package org.rut.util.algorithm.support; e~Hr(O+;e6
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import org.rut.util.algorithm.SortUtil; b~W)S/wF$P
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/** Z( #Ln
* @author treeroot C6)R#
* @since 2006-2-2 ,#aS/+;[)
* @version 1.0 RqGVp?
*/ 9d"5wx
public class BubbleSort implements SortUtil.Sort{ 99KVtgPm
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/* (non-Javadoc) pb$fb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q>IH``1*e
*/ nx;$dxx_Ws
public void sort(int[] data) { A7(M,4`6
int temp; E|,30Z+
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1CiA 8
if(data[j] SortUtil.swap(data,j,j-1); ou;qO
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} 3G&0Ciet
} q5?L1
} K_##-6>
} WFj*nS^~l
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} &Y=.D:z<
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选择排序: fM{1Os
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package org.rut.util.algorithm.support; \=8=wQv
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import org.rut.util.algorithm.SortUtil; *]'qLL7d
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/** :p&IX"Hh
* @author treeroot |>@-grs
* @since 2006-2-2 !^1[ s@1
* @version 1.0 4
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*/ `#=fA
public class SelectionSort implements SortUtil.Sort { vu ?3$
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/* Y.9~Bo<<r
* (non-Javadoc) [88{@)
* Uf^RLdoDn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +]_nbWL(%
*/ s~)L_ p
public void sort(int[] data) { WzlS^bZ
int temp;
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for (int i = 0; i < data.length; i++) { +
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int lowIndex = i; \boL`X
for (int j = data.length - 1; j > i; j--) { Kny%QBoiw
if (data[j] < data[lowIndex]) { $mD>rx
lowIndex = j; 6I5o2i
} H):-!?:
} n3*UgNg%fK
SortUtil.swap(data,i,lowIndex); L!&$c&=xf
} ?-d
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} N-D(y
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} zfirb
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Shell排序: 5pB^Y MP
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package org.rut.util.algorithm.support; X:R%1+&*
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import org.rut.util.algorithm.SortUtil; 'qdg:_L"
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/** ;FcExg|k
* @author treeroot Q5hb0O%a
* @since 2006-2-2 qP qy4V.;
* @version 1.0 7TnM4@*f
*/ v;Swo("
public class ShellSort implements SortUtil.Sort{ c1PViko,>
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/* (non-Javadoc) ;x,+*%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9jqO/_7R+
*/ - J{Dxz
public void sort(int[] data) { Sy4
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for(int i=data.length/2;i>2;i/=2){ ~."!l'a
for(int j=0;j insertSort(data,j,i); 3Ca
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} E]\D>[0O
} #"hJpyW 4V
insertSort(data,0,1); BXNI(7xi
} bd,Uz%o_
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/** /3OC7!~;fM
* @param data <%M\7NDWDA
* @param j ? 7/W>
* @param i A*rZQh
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*/ *Kp}B}}J
private void insertSort(int[] data, int start, int inc) { &t~zD4u B
int temp; W+8BQ-2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1RCXc>}/
}
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} AQB1gzE
} _{lx*dq
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快速排序:
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package org.rut.util.algorithm.support; JX2mTQ
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import org.rut.util.algorithm.SortUtil; h9w@oRp`~
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/** Oyi;bb<#
* @author treeroot #=`FM:WH
* @since 2006-2-2 >Y,/dyT
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* @version 1.0 0|.7Kz^
*/ 2=igS#h
public class QuickSort implements SortUtil.Sort{ %T`4!:vy
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/* (non-Javadoc) f%bc64N(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|w5QvCU?3
*/ 4$0jz'
public void sort(int[] data) { "}S9`-Wd|
quickSort(data,0,data.length-1); (! xg$Kz@
} g,00'z_D
private void quickSort(int[] data,int i,int j){ i!CKA}",
int pivotIndex=(i+j)/2; ,"P5D&,_
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SortUtil.swap(data,pivotIndex,j); e*Uz#w:
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int k=partition(data,i-1,j,data[j]); ]NaMZ
SortUtil.swap(data,k,j); 6'RZ
if((k-i)>1) quickSort(data,i,k-1); @?<N +qdH>
if((j-k)>1) quickSort(data,k+1,j); /Oq1q._9F
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} 2uvQf&,
/** ^m6k@VM
* @param data ddUjs8VvJ
* @param i LVPt*S= /
* @param j NWo7wVwc/c
* @return Fy}MXe"f
*/ 3v9gb,)y\
private int partition(int[] data, int l, int r,int pivot) { t]
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do{ .\z|Fr
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zznPD%#Sc
SortUtil.swap(data,l,r); J{nyo1A
} #JJp:S~`
while(l SortUtil.swap(data,l,r); u~/M
return l; D%c7JK
} 7,V!Iv^X
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} dD/29b(
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改进后的快速排序: E3CiZ4=5
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package org.rut.util.algorithm.support; 4
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import org.rut.util.algorithm.SortUtil; 5XSxQG@k^z
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/** ^7ea6G"
* @author treeroot (ybtXoQs
* @since 2006-2-2 O?C-nw6kP
* @version 1.0 T3u5al
*/ Dyouk+08x
public class ImprovedQuickSort implements SortUtil.Sort { }#\;np
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private static int MAX_STACK_SIZE=4096; 'f=) pc#&g
private static int THRESHOLD=10; y (c|5CQ
/* (non-Javadoc) l6&v}M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7"a`-]Ap
*/ `mq4WXO\
public void sort(int[] data) { 4! Oa4
int[] stack=new int[MAX_STACK_SIZE]; :Fi%Cef|
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int top=-1; zJG x5JC
int pivot; .gM>FUH3L
int pivotIndex,l,r; L#7)X5a__
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stack[++top]=0; n3l"L|W^(<
stack[++top]=data.length-1; hSx+{4PZ
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while(top>0){ E1l\~%A
int j=stack[top--]; u'$yYzBE
int i=stack[top--]; 8}"f|6Wm
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pivotIndex=(i+j)/2; ,IT)zCpaBP
pivot=data[pivotIndex]; #U!(I#^3
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SortUtil.swap(data,pivotIndex,j); |L.~Amd
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file://partition GqIvvnw@f
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r=j; (.quX@w"m
do{ oxCs*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `G ;Lz^
SortUtil.swap(data,l,r); r.a9W?(E
} JR a*;_
while(l SortUtil.swap(data,l,r); 0'\FrG
SortUtil.swap(data,l,j); w371.84
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if((l-i)>THRESHOLD){ Hz3 S^o7
stack[++top]=i; 5QL9w3L
stack[++top]=l-1; t5X^(@q4N
} G"U>fwFuK
if((j-l)>THRESHOLD){ xPfnyAo?%z
stack[++top]=l+1; S\v&{
stack[++top]=j; :d%
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} Iu1Sj`A
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} c> U{,z
file://new InsertSort().sort(data); !aW*dD61
insertSort(data); 2ucF(^
} #hE3~+i
/** ,a]~hNR*X
* @param data 5cNzG4z
*/ M;p q2$
private void insertSort(int[] data) { Y8`))MeD
int temp; X^
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4na4Jsq{
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} #`vGg9
} k,NU,^ &
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} ^d5./M8Bd
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归并排序: <0Egkz3s
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package org.rut.util.algorithm.support; ^0ZKHR(}e
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import org.rut.util.algorithm.SortUtil; eR*
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/** RkH oT^
* @author treeroot c7nk~K[6
* @since 2006-2-2 ETWmeMN
* @version 1.0 dI0>m:RBz
*/ !
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public class MergeSort implements SortUtil.Sort{ iJaNP%N
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/* (non-Javadoc) CTbhwY(/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uo[5V|>X6
*/ mKFHT
public void sort(int[] data) { ]BQWA
int[] temp=new int[data.length]; p|9ECdU>;
mergeSort(data,temp,0,data.length-1); U` nS` p
} C(|T/rQ-
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6$vh qg}f
int mid=(l+r)/2; K^qUlyv
if(l==r) return ; "1`i]Y\'
mergeSort(data,temp,l,mid); PN^1
mergeSort(data,temp,mid+1,r); DdS3<3]A
for(int i=l;i<=r;i++){ vb ^!(
temp=data; s)DNLx
} ,a_{ Y+
int i1=l; _BLSI8!N@
int i2=mid+1; Y <i}"eI*
for(int cur=l;cur<=r;cur++){ -"dy z(
if(i1==mid+1) k$x
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data[cur]=temp[i2++]; f!8m
else if(i2>r) rB&j"p}Q
data[cur]=temp[i1++]; bvu<IXX=2
else if(temp[i1] data[cur]=temp[i1++]; 6M vRR
else ?O>JtEz~lQ
data[cur]=temp[i2++]; i~s9Ot
} . N} }cJq
} qjEWk."
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} *7fPp8k+Z;
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改进后的归并排序: 2gR_1*|
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package org.rut.util.algorithm.support; Q2pboZ86
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import org.rut.util.algorithm.SortUtil; YGpp:8pen
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/** j{-7Pf8A
* @author treeroot PEn^.v@
* @since 2006-2-2 BRzWZq%r3
* @version 1.0 >rS<