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。 P[gYENQ
插入排序: JjH141 n%D
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package org.rut.util.algorithm.support; @ql S #(
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import org.rut.util.algorithm.SortUtil; " ,45p@
/** vSJ#
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* @author treeroot +78cQqDY!
* @since 2006-2-2 =?1B|hdo
* @version 1.0 ";w"dfC^
*/ (5=B^9{R
public class InsertSort implements SortUtil.Sort{ {=T9_c
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/* (non-Javadoc) lMb&F[KJ7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -=4:qQEw
*/ f]kG%JEK
public void sort(int[] data) { \hqjk:o
int temp; bR83N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *)qxrBc0
} \
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冒泡排序: yH',vC.
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package org.rut.util.algorithm.support; &^K,"a{
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import org.rut.util.algorithm.SortUtil; y9Q.TL>=[
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/** 0{.[#!CSk
* @author treeroot t|}}#Z!I[f
* @since 2006-2-2 pn
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* @version 1.0 !s[[X5
*/ iiTt{ab\Y
public class BubbleSort implements SortUtil.Sort{ /
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/* (non-Javadoc) %v<BE
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L-Pq/x2r
*/ t'bhA20Z\
public void sort(int[] data) { ~>>^7oq
int temp; 7) Qq
for(int i=0;i for(int j=data.length-1;j>i;j--){ Amj'$G|+hj
if(data[j] SortUtil.swap(data,j,j-1); /yTPb
} KWiP`h8
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} h=MEQ-3jg
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选择排序: 9%^O-8!
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package org.rut.util.algorithm.support; _'Hw`0}s
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import org.rut.util.algorithm.SortUtil; E8b:MY
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/** jF0>wm
* @author treeroot c4(og|ifk
* @since 2006-2-2 ow K)]t
* @version 1.0 `-w;/A"MJ
*/ CsiRM8
public class SelectionSort implements SortUtil.Sort { H[U"eS."
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/* F4=V*/7
* (non-Javadoc) >|g(/@IO
* a<lDT_2b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7&vDx=W
*/ :r}C&3
public void sort(int[] data) { )H[Pz.'ah0
int temp; ?CE&F<?#@
for (int i = 0; i < data.length; i++) { *apkw5B}C
int lowIndex = i; CK(`]-q>,
for (int j = data.length - 1; j > i; j--) { Jqz K5)
if (data[j] < data[lowIndex]) { P$*9Z@
lowIndex = j; <^Jdl.G
} M^ jEp
} -qdt$jIM
SortUtil.swap(data,i,lowIndex); 28LYGrB
} ZFRKzPc
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} 5N:IH@
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Shell排序: G]O5irsV
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package org.rut.util.algorithm.support; [Lq9lw&
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import org.rut.util.algorithm.SortUtil; QfRo`l/V9
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/** !AN;
* @author treeroot #N;McF;W
* @since 2006-2-2 R 0YWe
* @version 1.0 K#xL-
*/ 2$FH+wuW
public class ShellSort implements SortUtil.Sort{ t"jiLOQ[6
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/* (non-Javadoc) CO`?M,x>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [Z;ei1l
*/ O9_SVXWVw
public void sort(int[] data) { 7R$O~R3p
for(int i=data.length/2;i>2;i/=2){ sq;3qbz
for(int j=0;j insertSort(data,j,i); Y]bS=*q
} #M@~8dAH}M
} 5Kw?#
insertSort(data,0,1); i7%`}t
} B0D
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/** ]D[\l$(
* @param data [G'
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* @param j j%=X
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* @param i (h'Bz6K
*/ r0*Y~
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private void insertSort(int[] data, int start, int inc) { iAZbh"I
int temp; sq?js#C5
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S
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} JJy.)-R
} `\J,%J
} P~s u]+
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} !wTrWD!
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快速排序: 2@Oz _?O=
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package org.rut.util.algorithm.support; 5}Z>N,4
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import org.rut.util.algorithm.SortUtil; `RXlqj#u
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/** p4D.nB8
* @author treeroot JT6}m
* @since 2006-2-2 h 27f0x9
* @version 1.0 ^0 &jy:{
*/ iP6?[pl8
public class QuickSort implements SortUtil.Sort{ NuW6~PV
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/* (non-Javadoc) 3Uej]}c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _{$<s[S
*/ zwk&3
public void sort(int[] data) { O_L>We@3E
quickSort(data,0,data.length-1); a[p$e?gka
} 2S-f5&o
private void quickSort(int[] data,int i,int j){ #_WkV
int pivotIndex=(i+j)/2; bjAI7B8As
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SortUtil.swap(data,pivotIndex,j); `\GRY @cg
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int k=partition(data,i-1,j,data[j]); w)&?9?~
SortUtil.swap(data,k,j); rE]Nr ;Ys
if((k-i)>1) quickSort(data,i,k-1); }42Hhu7j
if((j-k)>1) quickSort(data,k+1,j); E;wT4 T=
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} FmSE]et
/** _qk
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* @param data #x`K4f)
* @param i |AS~sjWSJ
* @param j ]-_ ma
* @return "z*.Bk
*/ }QBL{\E!
private int partition(int[] data, int l, int r,int pivot) { '2
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do{ 7M8 cF>o
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NY|hE@{2.
SortUtil.swap(data,l,r); cbl>:ev1h
} _D$1CaAYo
while(l SortUtil.swap(data,l,r); +;4;~>Y
return l; xT(0-o*
} e+)y6Q=
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} >@Pw{Zh$
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改进后的快速排序: `vz7}TY
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package org.rut.util.algorithm.support; :zY;eJK m
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import org.rut.util.algorithm.SortUtil; F{^\vFp
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/** P^!g0K
* @author treeroot @ qi|}($
* @since 2006-2-2 )O5@R
* @version 1.0 [XttT
*/ (H"{r
public class ImprovedQuickSort implements SortUtil.Sort { 'n=bQ"bQu
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private static int MAX_STACK_SIZE=4096; #RbdQH !
private static int THRESHOLD=10; mG$N%`aG
/* (non-Javadoc) l(Dr@LB~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `NsQ&G
*/ !&:Cp_
public void sort(int[] data) { ~`="tzr:
int[] stack=new int[MAX_STACK_SIZE]; ;K~=? k
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int top=-1; P&=YLL<W
int pivot; qM+Ai*q
int pivotIndex,l,r; w]nt_xj
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stack[++top]=0; dm]g:KWg
stack[++top]=data.length-1; RN|Bk
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while(top>0){ 7r^Cs#b+I
int j=stack[top--]; (>E/C^Tc%
int i=stack[top--]; #d*0
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pivotIndex=(i+j)/2; 5*+DN
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pivot=data[pivotIndex]; q*5L",
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SortUtil.swap(data,pivotIndex,j); -agB ]j
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file://partition v\CBw"
l=i-1; \ 4^zY'
r=j; H-nhq-fut
do{ S(nQ?;9,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 63J3NwFt
SortUtil.swap(data,l,r); >F:1a\c
} ,A $IFE
while(l SortUtil.swap(data,l,r); (F 9P1Iq
SortUtil.swap(data,l,j); ~JNE]mg
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if((l-i)>THRESHOLD){ ^#C+l
stack[++top]=i; U;TS7A3
stack[++top]=l-1; wN10Drc
} SvQ|SKE':
if((j-l)>THRESHOLD){ SjpCf8Z(
stack[++top]=l+1; *aC[Tv[-P
stack[++top]=j; [s`B0V`04
} QlV(D<
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} )P? F ni}
file://new InsertSort().sort(data); QV.>Cy
insertSort(data); %rJDpB{
} <bo^u w
/** n#Dy
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* @param data 4M> pHz4
*/ X lItg\R
private void insertSort(int[] data) { _>]/. w2=
int temp; Z.!<YfA)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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归并排序: P^=B6>e
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package org.rut.util.algorithm.support; $[ S 33Q
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import org.rut.util.algorithm.SortUtil; V6](_w!
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/** $xdo=4;|
* @author treeroot pfIK9>i
* @since 2006-2-2 xzOvc<u
* @version 1.0 A'7Y{oPHX
*/ $H.U ~
public class MergeSort implements SortUtil.Sort{ WRkuPj2
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/* (non-Javadoc) :h(3Ep
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BTj1C
*/ H_3WxfO
public void sort(int[] data) { ;<[!;8
int[] temp=new int[data.length]; /DH`7E
mergeSort(data,temp,0,data.length-1); OmZZTeGg1s
} iG"v
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private void mergeSort(int[] data,int[] temp,int l,int r){ !`7evV:
int mid=(l+r)/2; 'YGP42#
if(l==r) return ; K3h];F!^
mergeSort(data,temp,l,mid); lH`c&LL-=!
mergeSort(data,temp,mid+1,r); "Dk@-Ac
for(int i=l;i<=r;i++){ ^Ss<<
temp=data; eN|zD?ba&
} \'u+iB
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int i1=l; 3I)oqS@q'
int i2=mid+1; I4w``""c
for(int cur=l;cur<=r;cur++){ %%n&z6w