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。 f8 jaMn9o
插入排序: Y;w]u_
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package org.rut.util.algorithm.support; y(dS1.5F
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import org.rut.util.algorithm.SortUtil; W<4\4
/** 42u\Y_^ID
* @author treeroot wI4;/w>
* @since 2006-2-2 aYgJTep>r
* @version 1.0 G4}q*&:k
*/ wgyO%
public class InsertSort implements SortUtil.Sort{ V4-=Ni]k
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/* (non-Javadoc) TH|hrL;:8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QdTe!f|
*/ Q#N+5<]J)#
public void sort(int[] data) { 1+jYpYEQW
int temp; rTm{-b)r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ["F,|e{y$
} 9yh@_~rZ
} zFn&~lFB
} .ndQ(B
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}
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冒泡排序: MT`gr
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package org.rut.util.algorithm.support; _Pkh`}W:
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import org.rut.util.algorithm.SortUtil; Dkb&/k:)
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/** RV`j>1
* @author treeroot {H V,2-z
* @since 2006-2-2 RuZ;hnE&
* @version 1.0 CiuN26>
*/ }#8uXA
public class BubbleSort implements SortUtil.Sort{ ? st#6=M
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/* (non-Javadoc) +][P*/ Ek
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $at|1+bQ
*/ dmz3O(]$
public void sort(int[] data) { f>dkT'4
int temp; ,7P^]V1
for(int i=0;i for(int j=data.length-1;j>i;j--){ }^[@m#
if(data[j] SortUtil.swap(data,j,j-1); zRu`[b3u<
} dLf8w>i`T
} %B*dj9n^q
} !j9i=YDb
} mPin\-I
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} <gLtX[v!CL
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选择排序: C8:"+;
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package org.rut.util.algorithm.support; ts<dUO
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import org.rut.util.algorithm.SortUtil; Td*Oljj._U
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/** 5V~p@vCx
* @author treeroot A=UIN!
* @since 2006-2-2 h&bV!M
* @version 1.0 ]Rh(=bg
*/ 9M]"%E!s
public class SelectionSort implements SortUtil.Sort { W_\L_)^X
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/* FH8mK)
* (non-Javadoc) `uVW<z{l
* ;6nZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V1)P=?%(US
*/ lmKq xs4
public void sort(int[] data) { \!Zh= "hN
int temp; a~F@3Pd
for (int i = 0; i < data.length; i++) { ;J-Ogt @d7
int lowIndex = i; v8bl-9DQ
for (int j = data.length - 1; j > i; j--) { xsDa!
if (data[j] < data[lowIndex]) { <C%-IZv$
lowIndex = j; (V.,~t@
} $sF#Na4^
} e[mhbFf-
SortUtil.swap(data,i,lowIndex); j9ta0~x1*6
} 4V|z)=)A
} yM:~{;HLF
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} qMES<UL>
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Shell排序: xg,]M/J
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package org.rut.util.algorithm.support; =8p+-8M[d
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import org.rut.util.algorithm.SortUtil; <nTmZ-;
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/** <hZ}34?]i2
* @author treeroot hYc{9$
* @since 2006-2-2 '0')6zW5s
* @version 1.0 #r.` V!=
*/ %;(|KrUN
public class ShellSort implements SortUtil.Sort{ _~ZQ b
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/* (non-Javadoc) BX(d"z b<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }&T<wm!
*/ Of7) A
public void sort(int[] data) { I49l2>
for(int i=data.length/2;i>2;i/=2){ `JWYPsWk
for(int j=0;j insertSort(data,j,i); QHs:=i~VH
} &1E~ \8U
} gSr}p$N
insertSort(data,0,1); uxC
} S2ppKlVv
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/** bI]UO)
* @param data xcZ%,7
* @param j M&djw`B
* @param i Uk*;C
*/ iCnUnR{
private void insertSort(int[] data, int start, int inc) { TdP{{&'9
int temp; LlA`QLe
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rw8J:?0x
} 40Qzo%eL
} mE^tzyh
} 5<O61Lgx
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} qSoBj&6y
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快速排序: >[XOMKgQ](
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package org.rut.util.algorithm.support; K rr?`n
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import org.rut.util.algorithm.SortUtil; N=Uc=I7C
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/** h76NR
* @author treeroot \'??
* @since 2006-2-2 Jn[q<e"
* @version 1.0 LPapD@Z
*/ I#S~
public class QuickSort implements SortUtil.Sort{ !q-:rW?c
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/* (non-Javadoc) -?aw^du
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yF/< :
*/ -.b
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public void sort(int[] data) {
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quickSort(data,0,data.length-1); p&OJa$N$[
} V+=*2?1
private void quickSort(int[] data,int i,int j){ =tS[&6/
int pivotIndex=(i+j)/2; TDl!qp @
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SortUtil.swap(data,pivotIndex,j); yL;o{
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int k=partition(data,i-1,j,data[j]); Q.9Ph
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SortUtil.swap(data,k,j); jTd4 H)
if((k-i)>1) quickSort(data,i,k-1); ;WvYzd9
if((j-k)>1) quickSort(data,k+1,j); MJ>Qq[0
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} })zB".
/** K=m9H=IX~T
* @param data J-, H6u
* @param i MdVCD^B
* @param j m]0^
* @return !bZhj3.
*/ 2H?I'<NoC
private int partition(int[] data, int l, int r,int pivot) { Bbl)3$`,
do{ O^X[9vrW
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'YZI>V*
SortUtil.swap(data,l,r); vZ[$H
} ZVdsxo<
while(l SortUtil.swap(data,l,r); QN5yBa!Wz
return l; Q{qj
} iHE0N6%q
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} *xX(!t'
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改进后的快速排序: [GR]!\!%~
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package org.rut.util.algorithm.support; 6(N.T+;]
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import org.rut.util.algorithm.SortUtil; ^MW\t4pZ
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/** qJ{r!NJJ
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* @author treeroot _HWHQF7
* @since 2006-2-2 HA^jk%53
* @version 1.0 L4YVH2`0)
*/ JCw{ ?^F"
public class ImprovedQuickSort implements SortUtil.Sort { #<a_: m)@
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private static int MAX_STACK_SIZE=4096; {yvb$ND|j{
private static int THRESHOLD=10; _`bS[%CJ
/* (non-Javadoc) *[d~Nk%Y$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) My]+?.Ru
*/ |8&-66pX
public void sort(int[] data) { .sd B3x
int[] stack=new int[MAX_STACK_SIZE]; j+_S$T8w
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int top=-1; >AR Tr'B
int pivot; =cf{f]N
int pivotIndex,l,r; LPEjRG,
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stack[++top]=0; ./ "mn3U
stack[++top]=data.length-1; Cz'xGW{
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while(top>0){ KWFyw>*)
int j=stack[top--]; m>]>$=%
int i=stack[top--]; eaV3)uP
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pivotIndex=(i+j)/2; 8ivRp<9
pivot=data[pivotIndex]; Xtci0eS#V
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SortUtil.swap(data,pivotIndex,j); |7rR99
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file://partition Bz~ -2#l
l=i-1; 9 '2=
r=j; GN\8![J
do{ E4Y"X
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -'80>[}q/
SortUtil.swap(data,l,r); ~?FK ; (
} n_<mPU
while(l SortUtil.swap(data,l,r); o;ik Z*+*
SortUtil.swap(data,l,j); r#LnDseW
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if((l-i)>THRESHOLD){ iKg75%;t
stack[++top]=i; "#*Nnt
stack[++top]=l-1; X3P&"}a
} IYuyj(/!
if((j-l)>THRESHOLD){ &g*klt'B
stack[++top]=l+1; |.1qy,|!X
stack[++top]=j; )r ULT$;i@
} $GQphXb$
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} W;^N8ap%
file://new InsertSort().sort(data);
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insertSort(data); Hab!qWK`
} {UP'tXah
/** aQ&uC )w
* @param data ;5<P|:^
*/ bX7EO 8
private void insertSort(int[] data) { a*V9_Px$&
int temp; D^|jZOJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Uf# PoQ!y
} 'KSa8;:=C
} .FuA;:@%\
} P?uf?{
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} $9G3LgcS
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归并排序: TW>?h=.z
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package org.rut.util.algorithm.support; mj)PLZ]
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import org.rut.util.algorithm.SortUtil; H \ 3M
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/** *%3oyWwCd
* @author treeroot ,NDh@VYe
* @since 2006-2-2 !;i*\
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* @version 1.0 5!~!j
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*/ FS8S68
public class MergeSort implements SortUtil.Sort{ 6{Ks`Af
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/* (non-Javadoc) +i+tp8T+7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k,T_e6(
*/ dPHw3^J0j
public void sort(int[] data) { <_t5:3HL
int[] temp=new int[data.length]; M^uU4My
mergeSort(data,temp,0,data.length-1); K${}r0
} N?$7Z v[G
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3)y{n%3L
int mid=(l+r)/2; Lj iI+NJ
if(l==r) return ; (Q'U@{s
mergeSort(data,temp,l,mid); L7m`HVCt&
mergeSort(data,temp,mid+1,r); ovz#
for(int i=l;i<=r;i++){ +I&J7ICV0
temp=data; r]0(qg
} `0?^[;[u[
int i1=l; t~ -J %$
int i2=mid+1; y5_XHi@u~o
for(int cur=l;cur<=r;cur++){ bjlkX[{}I
if(i1==mid+1) u^l*5F%DK
data[cur]=temp[i2++]; 7gm:ZS
else if(i2>r) <