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。 PrF}a<:n:
插入排序: s)A<=)w/e
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package org.rut.util.algorithm.support; 5R$G(Ap_
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import org.rut.util.algorithm.SortUtil; mbl]>JsQD
/** y2HxP_s?P?
* @author treeroot = 64r:E
* @since 2006-2-2 Eq%@"-mo
* @version 1.0 D,l,`jv*
*/ %9C@ Xl
public class InsertSort implements SortUtil.Sort{ 5vzceQE}
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/* (non-Javadoc) v'2[[u{7*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4\t1mocCSN
*/ W~T}@T:EN
public void sort(int[] data) { =%)+%[wv
int temp; !{,F~i9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EC&@I+'8Q
} ;|%dY{L-
} ;E2>Ovv
} gB,G.QM*6
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} ewNz%_2
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冒泡排序: qMBR *f
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package org.rut.util.algorithm.support; 1&=0Wg0ig
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import org.rut.util.algorithm.SortUtil; tL
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/** wle@vCmr
* @author treeroot 3q[WHwmm
* @since 2006-2-2 W|k0R4K]]
* @version 1.0 ajl
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*/ ChryJRuwv5
public class BubbleSort implements SortUtil.Sort{ Bc-yxjsw
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/* (non-Javadoc) ({0)@+V8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v<\A%
*/ " }gVAAvc7
public void sort(int[] data) { :yT-9Ze%q
int temp; $5`!Z%>/
for(int i=0;i for(int j=data.length-1;j>i;j--){ D-imL;|
if(data[j] SortUtil.swap(data,j,j-1); m%+IPZ2m
} ylf[/='0K
} Sgb*tE)T
} U7mozHS,:9
} 8 S`9dSc
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} fyz
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选择排序: @(``:)Z<b
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package org.rut.util.algorithm.support; =!Vf
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import org.rut.util.algorithm.SortUtil; I:(m aMc
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/** h.rD}N\L
* @author treeroot ~sQjl]
* @since 2006-2-2 ?zJpD8e
* @version 1.0 fqz28aHh
*/ C`rLj5E%
public class SelectionSort implements SortUtil.Sort { Oh.ZPG=
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/* /il@`w;G
* (non-Javadoc) xieP "6
* OkAK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %ugHhS!
*/ 1
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public void sort(int[] data) { =6FUNvP#8
int temp; gV1[3dW
for (int i = 0; i < data.length; i++) { ?71+f{s
int lowIndex = i; &Wp8u#4L
for (int j = data.length - 1; j > i; j--) { X C86-b)E
if (data[j] < data[lowIndex]) { z@s5m}
lowIndex = j; 5\mTr)\R
} eC
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} 8GPIZh'0h
SortUtil.swap(data,i,lowIndex); c;f!!3&
} Z!d7&T}
} =+5,B\~q@C
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} 75!9FqMZ}
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Shell排序: 6[qA`x#
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package org.rut.util.algorithm.support; C<^YVeG
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import org.rut.util.algorithm.SortUtil; )/ Ud^wi
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/** =*BIB5
* @author treeroot {
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* @since 2006-2-2 Mpue
* @version 1.0 Mvj;ic6iK
*/ CF!Sa 6
public class ShellSort implements SortUtil.Sort{ MmPU7Nl%X
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/* (non-Javadoc) =-cwXo{Q.O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l@j.hTO<
*/ vgIpj3u
public void sort(int[] data) { A*h{Lsx;
for(int i=data.length/2;i>2;i/=2){ i
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for(int j=0;j insertSort(data,j,i); +.B<Hd
} U=Y)V%
} 1[F3 Z
insertSort(data,0,1); HysS_/t~
} Z#d&|5Xj
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/** F~#zxwd
* @param data +'@+x'/{^
* @param j 2'jOP"G
* @param i #qU-j/Qf
*/ Bm$"WbOq*R
private void insertSort(int[] data, int start, int inc) { A$0H
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int temp; j!~l,::$"X
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &K_)#v`|
} M69
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} vD/NgRBww
} 5[l8y,
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} zIC;7 5#
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快速排序: '# NcZy
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package org.rut.util.algorithm.support; +=Jir1SLV
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import org.rut.util.algorithm.SortUtil; hDP/JN8y
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/** WtQ8X|\`
* @author treeroot 4EI7W,y
* @since 2006-2-2 gXT9 r' k
* @version 1.0 .xzEAu ;
*/ zepop19
public class QuickSort implements SortUtil.Sort{ ?SQE5Z
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/* (non-Javadoc) ( m\$hX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mvW%
*/ w&$d* E
public void sort(int[] data) { rt3qdk5U
quickSort(data,0,data.length-1); #
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} [P zv4+
private void quickSort(int[] data,int i,int j){ rD?L
int pivotIndex=(i+j)/2; 2n><RZ/9
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SortUtil.swap(data,pivotIndex,j); -50HB`t
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int k=partition(data,i-1,j,data[j]); B!{d-gb
SortUtil.swap(data,k,j); ~ *:F{
if((k-i)>1) quickSort(data,i,k-1); 6K
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if((j-k)>1) quickSort(data,k+1,j); 'ckQg=zPR
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} #Lsnr.80
/** O1%pxX'`S
* @param data sb:d>6
* @param i Y3kA?p0
* @param j dca;'$
* @return EcIE~qs
*/ t$2_xX
private int partition(int[] data, int l, int r,int pivot) { K]/4qH$:
do{ HCK|~k
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n%h^o
SortUtil.swap(data,l,r); V$0dtvGvH
} Z UKf`m[
while(l SortUtil.swap(data,l,r); g71[6<D
return l; UT~a&u
} tqAd$:L
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} W{z.?$SH
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改进后的快速排序: }(a+aHH
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package org.rut.util.algorithm.support; ['z[
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import org.rut.util.algorithm.SortUtil; 4tg<iH{
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/** i'stw6*J
* @author treeroot ,F&g5'
* @since 2006-2-2 tg^sCxz9]
* @version 1.0 %0#1t 5g
*/ gOgps:
public class ImprovedQuickSort implements SortUtil.Sort { *5tO0_L
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private static int MAX_STACK_SIZE=4096; jq'!UN{
private static int THRESHOLD=10; yx V:!gl
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2|\A7.
*/ ld$i+6|
public void sort(int[] data) { Y_`- 9'&
int[] stack=new int[MAX_STACK_SIZE]; <Q|d&vDVfV
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int top=-1; R.7 :3h
int pivot; [m^+,%m5]
int pivotIndex,l,r; XC{eX&,2x
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stack[++top]=0; (}. @b|s
stack[++top]=data.length-1; 2Q;9G6p
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while(top>0){ XdH\OJ
int j=stack[top--]; Q{e\}wN
int i=stack[top--]; kyR*D1N&)
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pivotIndex=(i+j)/2; 9&<x17'
pivot=data[pivotIndex]; B|o2K}%f
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SortUtil.swap(data,pivotIndex,j); ?UM*Xah
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file://partition Em[DHfu1Q
l=i-1; $ d?.2Kg
r=j; ;?C#IU
do{ >u9Nz0?j
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Uye|9/w8 !
SortUtil.swap(data,l,r); W0I#\b18
} z;@*r}H
while(l SortUtil.swap(data,l,r); 9Fn\FYUq
SortUtil.swap(data,l,j); !8`3GX:B_
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NB
if((l-i)>THRESHOLD){ V I%
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stack[++top]=i; IK*07h/!
stack[++top]=l-1; vn/.}GkpU
} @cU&n6C@
if((j-l)>THRESHOLD){ boG_f@dv(
stack[++top]=l+1; 1+?N#Fh
stack[++top]=j; hY`\&@
} fNGZ o
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} #c^^=Z
file://new InsertSort().sort(data); +iOKb c'
insertSort(data); D7_*k%;@
} .k,YlFvj
/** CdL< *AH
* @param data C]Q8:6b
*/ |7x\m t
private void insertSort(int[] data) { yA47"R
int temp; 2wF8 P)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 36US5ef
} ^n0]dizB
} X$/2[o#g
} I-OJVZ( V
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} 1;VHM'
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归并排序: 4tY ss
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package org.rut.util.algorithm.support; ]l8^KX'
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import org.rut.util.algorithm.SortUtil; ,@5I:X!rR
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/** F2X0%te
* @author treeroot tDUwy^j
* @since 2006-2-2 O$4yAaD
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* @version 1.0 nB .G
*/ [=~ pe|8:
public class MergeSort implements SortUtil.Sort{ vTn}*d.K=
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/* (non-Javadoc) ToYAW,U[d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 47J5oPT2'
*/ Yup3^E
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public void sort(int[] data) { w6j/ Dq!
int[] temp=new int[data.length]; ']+Uu'a
mergeSort(data,temp,0,data.length-1); ?IpLf\n-
} &r:7g%{n
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private void mergeSort(int[] data,int[] temp,int l,int r){ }f2r!7:x
int mid=(l+r)/2; o=`C<}
if(l==r) return ; jlxpt)0i
mergeSort(data,temp,l,mid); 5ZBKRu
mergeSort(data,temp,mid+1,r); H/}]FmjN
for(int i=l;i<=r;i++){ NVRLrJWpp
temp=data; *?MGMhE
} av~5l4YL
int i1=l; R
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int i2=mid+1; Z(Jt~a3o
for(int cur=l;cur<=r;cur++){ n?V+dC=F}
if(i1==mid+1) D_Bb?o5
data[cur]=temp[i2++]; g:EVhuK
else if(i2>r) T1H"\+
data[cur]=temp[i1++]; OrK&RC
else if(temp[i1] data[cur]=temp[i1++]; )m. 4i =X
else 7B?c{
data[cur]=temp[i2++]; u(G*\<z-
} V*~Zs'L'E
} mkR2i>
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} W6Y@U$P#G
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改进后的归并排序: Dwzg/F(
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package org.rut.util.algorithm.support; I|Gp$uq _
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import org.rut.util.algorithm.SortUtil; ^b
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/** b5^OQH{v
* @author treeroot yDGVrc'
* @since 2006-2-2 GAAm0;
* @version 1.0 )rixMl &[
*/ edPUG
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public class ImprovedMergeSort implements SortUtil.Sort { IY*EA4>
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private static final int THRESHOLD = 10; M>/Zbnq
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/* >]c*'~G&