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。 -0PT(gx
插入排序: +ZtqR
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package org.rut.util.algorithm.support; Lv+lLK
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import org.rut.util.algorithm.SortUtil; cjsQm6
/** |Y"q. n77
* @author treeroot :\L{S
* @since 2006-2-2 b gGd
* @version 1.0 z:bxnM2\
*/ EcrM`E#kaZ
public class InsertSort implements SortUtil.Sort{ rA&|!1q"B
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/* (non-Javadoc) ge:UliHJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r^-3( 77n
*/ 6UR.,*f=
public void sort(int[] data) { m `~/]QQ
int temp; G!T)V2y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1@RctI_}
} GrjL9+|x
} TAlpy$
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冒泡排序: Um]>B`."wK
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package org.rut.util.algorithm.support; G*2bYsnhX
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import org.rut.util.algorithm.SortUtil; )Xg,;^
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/** 2+
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* @author treeroot xcwyn\93)
* @since 2006-2-2 B2:6=8<
* @version 1.0 T5.1qr L
*/ eG9tn{
public class BubbleSort implements SortUtil.Sort{ S9J<3
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/* (non-Javadoc) |lOxRUf~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5t#+UR
*/ G$XvxJ
public void sort(int[] data) { "{105&c\
int temp; SdBv?`u|g
for(int i=0;i for(int j=data.length-1;j>i;j--){ Enm#\(j
if(data[j] SortUtil.swap(data,j,j-1); 0RAmwfXm
} N~_GJw@
} z]^&^VFu
} a_4Ny
} <KqZ.7XfB
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} =:n>yZ3T
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选择排序: _O2},9L n
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package org.rut.util.algorithm.support; UhYeyT
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import org.rut.util.algorithm.SortUtil; )n}Wb+2I
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/** kLQPa[u4
* @author treeroot :TJv<NZi'
* @since 2006-2-2 <8yzBp4gZ
* @version 1.0 rlk0t159
*/ n o`c[XY
public class SelectionSort implements SortUtil.Sort { ty[bIaQi
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/* -;&aU;k
* (non-Javadoc) $D
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* 34k<7X`I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8M*[RlUJB
*/ ]+;1)
public void sort(int[] data) { 0ohpJh61Q
int temp; )$Xd#bzD|
for (int i = 0; i < data.length; i++) { A9\m.3jo
int lowIndex = i; Y,?s-AB
for (int j = data.length - 1; j > i; j--) { ,S
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if (data[j] < data[lowIndex]) { ]\w0u7}
lowIndex = j; "- S2${
} /fbI4&SB!
} azR<Y_tw
SortUtil.swap(data,i,lowIndex); .ii9-+_
} U.is:&]E
} l4?o0;:)
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} l:mC'aR
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Shell排序: H7n5k,
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package org.rut.util.algorithm.support; 8aZuI|z
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import org.rut.util.algorithm.SortUtil; 8"/5Lh(
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/** 0yr=$F(]s
* @author treeroot ^N}zePy0
* @since 2006-2-2 ]Aap4+s
* @version 1.0 (e sTb,
*/ k<RJSK8
public class ShellSort implements SortUtil.Sort{ <6^MVaD
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/* (non-Javadoc) S'M=P_-7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #A<|hh
*/ So; ;
public void sort(int[] data) { | n5F_RL
for(int i=data.length/2;i>2;i/=2){ 3"=% [
for(int j=0;j insertSort(data,j,i); M,@\*qlEJ
} CqX2R:#
} ` W$
insertSort(data,0,1); ^ZnlWZ@r
} ]jiM
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/** }R-eQT
* @param data 1~:7W
* @param j "&?F6Pi
* @param i 4DI.RK9
*/ 2?YN8
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private void insertSort(int[] data, int start, int inc) { 2|]$hjs
int temp; UMR0S5`}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0VC8'6S_k
} =H6"\`W
} jn vJ`7zFP
} >Ia{ZbQV
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} RM\it"g
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快速排序: z{:T~s
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package org.rut.util.algorithm.support; `|K30hRp:
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import org.rut.util.algorithm.SortUtil; vQB;a?)o
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/** =H&{*Ja
* @author treeroot
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* @since 2006-2-2 :0G "EM4
* @version 1.0 ^ FNvVbK|`
*/ 5&a4c"fU
public class QuickSort implements SortUtil.Sort{ M{I8b<hY
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/* (non-Javadoc) SA_5..
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =au7'i |6
*/ kBolDPvBG
public void sort(int[] data) { 0'y9HE'e
quickSort(data,0,data.length-1); 55xaZ#|
} ,'[L6=#
private void quickSort(int[] data,int i,int j){ lM
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int pivotIndex=(i+j)/2; ozN#LIM>P
file://swap #\9sCnb
SortUtil.swap(data,pivotIndex,j); t.wB\Kmt\
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int k=partition(data,i-1,j,data[j]); :SFcnYv0
SortUtil.swap(data,k,j); $s$j</.q
if((k-i)>1) quickSort(data,i,k-1); )>,;
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if((j-k)>1) quickSort(data,k+1,j); j2O?]M
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} 7A0D[?^xe
/** R'RLF
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* @param data gBM6{48GF
* @param i o.Ld.I)
* @param j R
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* @return rPaUDR4U
*/ 9W{`$30
private int partition(int[] data, int l, int r,int pivot) { SF$'$6x}
do{ 2<&lrsh
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q{D_p[q
SortUtil.swap(data,l,r); lm'L-ZPN
} bvdAOvxChW
while(l SortUtil.swap(data,l,r); E?%SOU<
return l; 7/*Q?ic
} 9WN4eC$
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} cp@(y$
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改进后的快速排序: kmHIU}Z
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package org.rut.util.algorithm.support; -h=K]Y{`
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import org.rut.util.algorithm.SortUtil; 9
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/** @C[]o.r
* @author treeroot Y1e>P
* @since 2006-2-2 !uaV6K
* @version 1.0 6ww4ZH?j
*/ k.Tu#7
public class ImprovedQuickSort implements SortUtil.Sort { m1,?rqeb
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private static int MAX_STACK_SIZE=4096; aXi5~,Ks_
private static int THRESHOLD=10; 7R9S%
/* (non-Javadoc) ?^TjG)e7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7WZ).,qxY
*/ d=<"sHO
public void sort(int[] data) { E,"?RbG
int[] stack=new int[MAX_STACK_SIZE]; 3`y9V2&b
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int top=-1; a.P7O!2Lp
int pivot; 3SbtN3
int pivotIndex,l,r; =#WoeWFW*
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stack[++top]=0; dWR0tS6vR`
stack[++top]=data.length-1; 34Q;& z\e
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while(top>0){ oK cgP
int j=stack[top--]; l2>ka~
int i=stack[top--]; _Wcr'*7
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pivotIndex=(i+j)/2; Vc}#Ok
pivot=data[pivotIndex]; wc#+Yh6
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SortUtil.swap(data,pivotIndex,j); dz^l6<a"n
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file://partition ex_Zw+n
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do{ nC Mv&{~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A`E7V}~
SortUtil.swap(data,l,r); qU!*QZ^y&
} *=]hc@
while(l SortUtil.swap(data,l,r); 1~!
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SortUtil.swap(data,l,j); :Ny.OA
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if((l-i)>THRESHOLD){ ~udi=J|
stack[++top]=i; b"U{@
stack[++top]=l-1; ')pXQ
} u nE h
if((j-l)>THRESHOLD){ i:ar{ q
stack[++top]=l+1; :W'Yt9v)
stack[++top]=j; J23Tst#s
} >;@ _TAF
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} xyGk\= S
file://new InsertSort().sort(data); 6nxX~k
insertSort(data); F,2)Udim
}
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/** YGp8./ma<I
* @param data {J`Zl1_q
*/ wwnl_9a
private void insertSort(int[] data) { [kf$82
int temp; F@e9Dz|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~T;FOB%w
} sSVgDQ~q
} yya"*]*S
} }UwDHq=
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} _M
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归并排序: w7Do#Cv
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package org.rut.util.algorithm.support; fVCpG~&t
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import org.rut.util.algorithm.SortUtil; ^l\U6$3
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/** I;dc[m
* @author treeroot )bc0 t]Fs
* @since 2006-2-2 H]@M00C
* @version 1.0 |2mm@):
*/ 3OUZR5_$
public class MergeSort implements SortUtil.Sort{ xL,;(F\^
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/* (non-Javadoc) 98u$5=Z'/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OhT?W[4
*/ O][R"5d
public void sort(int[] data) { =]r<xON%S
int[] temp=new int[data.length]; STMc@MeZU_
mergeSort(data,temp,0,data.length-1); yLfb'Ba
} P]*,955*)
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private void mergeSort(int[] data,int[] temp,int l,int r){ T;(k
int mid=(l+r)/2; zcCX;N
if(l==r) return ; S]^`Qy)
mergeSort(data,temp,l,mid); H f}->
mergeSort(data,temp,mid+1,r); DyiyH%SSD
for(int i=l;i<=r;i++){ `usX(snY
temp=data; AH$D./a
} =5bef8 O
int i1=l; E?>
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int i2=mid+1; Gni<@;}
for(int cur=l;cur<=r;cur++){ w i,}sEoM
if(i1==mid+1) __Kn 1H{
data[cur]=temp[i2++]; | /,XdTSy
else if(i2>r) e 5hq>K
data[cur]=temp[i1++]; N%Gb
else if(temp[i1] data[cur]=temp[i1++]; RJ/4T#b"+
else (UWV#AR
data[cur]=temp[i2++]; !Yx9=>R
} $q`650&S*
} E"p;
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} m,i@
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改进后的归并排序: 3ifQKKcR{
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package org.rut.util.algorithm.support; +{
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import org.rut.util.algorithm.SortUtil; zTODV<-`
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/** m22FOjk\
* @author treeroot FsI51@V72Q
* @since 2006-2-2 QkJAjmB
* @version 1.0 fi*@m,-
*/ nCF1i2*6|"
public class ImprovedMergeSort implements SortUtil.Sort { LadE4:oy
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private static final int THRESHOLD = 10; L+s3@C;b
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/* NRU&GCVwu
* (non-Javadoc) |tl4I2AV
* cE3g7(a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bf37/kkf(
*/ 1n+C'P"
public void sort(int[] data) {
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int[] temp=new int[data.length]; '1|FqQ\.
mergeSort(data,temp,0,data.length-1); +AGI)uQQ
} iT f]Pd'
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