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。 *(s0X[-
插入排序: ,|g&v/WlC%
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package org.rut.util.algorithm.support; 5O(U1
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import org.rut.util.algorithm.SortUtil; 1Ep7CV-n}
/** \9fJ)*-
* @author treeroot pocXQEg$]
* @since 2006-2-2 :HM~!7e
* @version 1.0 H:nO\]
*/ d]USk&8
public class InsertSort implements SortUtil.Sort{ 3*T/ 7\
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/* (non-Javadoc) 5)Z:J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZkWMo=vL
*/ cA+T-A]
public void sort(int[] data) { JXV#V7
int temp; _?]W%R|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JXjH}C
} 1pK(tm
} (}5};v
} ^M1jv(
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} z6Fl$FFP
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冒泡排序: ?E,-P!&R
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package org.rut.util.algorithm.support; .}GOHW)}
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import org.rut.util.algorithm.SortUtil; 0nvT}[\H*
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/** p' 6h9/
* @author treeroot fRxn,HyV
* @since 2006-2-2 iMv):1p>8
* @version 1.0 o=RxQk1N
*/ -'}#j\
public class BubbleSort implements SortUtil.Sort{ 9@?|rje9
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/* (non-Javadoc) DxD\o+:r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )6BySk
*/ /3.;sS]B
public void sort(int[] data) { CfO{KiM(2
int temp; :fDzMD
for(int i=0;i for(int j=data.length-1;j>i;j--){ W0;QufV
if(data[j] SortUtil.swap(data,j,j-1); 3s?ZyQy
} mq}UUk@
} O3?^P"C
} x[fp7*TiG
} XZQ-Ig18
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} Lp3pJE
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选择排序: W4qnXD1n
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package org.rut.util.algorithm.support; N?8nlrDQ
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import org.rut.util.algorithm.SortUtil; `gF]
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/** BpGyjoJ2
* @author treeroot o3NB3@uj<
* @since 2006-2-2 I*g[Y=
* @version 1.0 jfam/LL{V
*/ r;>.*60AT
public class SelectionSort implements SortUtil.Sort { m%.[|sZ3EM
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/* 64<*\z_
* (non-Javadoc) )YZx]6\l)
* =rkW325O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^i8(/iwdJE
*/ PeLzZ'$D
public void sort(int[] data) { N0ef5J
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int temp; hx4c`fOs
for (int i = 0; i < data.length; i++) { Im]6-#(9\|
int lowIndex = i; EN8xn9M?
for (int j = data.length - 1; j > i; j--) { fhC| =0XB
if (data[j] < data[lowIndex]) { _kBx2>qQ
lowIndex = j; zH#urF6<
} .&8a ;Q?c
} :oiHf:
SortUtil.swap(data,i,lowIndex); O3#eQs
} &;<'AF
} "{2niBx
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} _?eT[!oO8
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Shell排序: R D?52\
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package org.rut.util.algorithm.support; fP$rOJ)P
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import org.rut.util.algorithm.SortUtil; 8==_43
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/** "M^mJl&*b
* @author treeroot +wI<w|!
* @since 2006-2-2 Q-1Xgw!
* @version 1.0 *55unc
*/ @3S:W2k
public class ShellSort implements SortUtil.Sort{ J6<O|ng::
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/* (non-Javadoc) ^uPg71r:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r@
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*/ 4Tb"+Y}
public void sort(int[] data) { Tk`|{Ph0
for(int i=data.length/2;i>2;i/=2){ _6g(C_m'T?
for(int j=0;j insertSort(data,j,i); agQDd8 oX
} 7<Y aw,G
} 2^f7GP
insertSort(data,0,1); Ka<J*
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} ^MG"n7)X
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/** 8# x7q>?
* @param data MIh\z7gW
* @param j #&%>kfeJ)<
* @param i C;.,+(G
*/ 9}H]4"f7
private void insertSort(int[] data, int start, int inc) { 3Vak
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int temp; ru4M=D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pbw{EzM
} ,_Kr}RH
} \1QY=}
} Ba**S8{/`
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} Z[eWey_
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快速排序: ?0?3yD-!9
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 4S[UJ%
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/** 7R# }AQ
* @author treeroot `*D"=5G+
* @since 2006-2-2 3rjKwh7
* @version 1.0 o?6m/Klw6
*/ <Y2$'ETD
public class QuickSort implements SortUtil.Sort{ =|8hG*D8
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/* (non-Javadoc) NFKvgd@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q6<P\CSHy<
*/ J_.cC
public void sort(int[] data) { K Hgn
quickSort(data,0,data.length-1); 5;,h8vW
} k%Vprc
private void quickSort(int[] data,int i,int j){ '4Fwh]Ee
int pivotIndex=(i+j)/2; 8/&4l,M5
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SortUtil.swap(data,pivotIndex,j); HIx%c5^
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int k=partition(data,i-1,j,data[j]); .{} 8mFi1
SortUtil.swap(data,k,j); i];P!Gm
if((k-i)>1) quickSort(data,i,k-1); j<k6z
if((j-k)>1) quickSort(data,k+1,j); py+\e"s
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} %:zu68Q[
/** C4P<GtR9
* @param data X8R`C0
* @param i ^_<|~
* @param j RAP-vVh/C
* @return nosD1sS.K8
*/ 75lh07
private int partition(int[] data, int l, int r,int pivot) { d7
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do{ ^|]Dg &N.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xLDD;Qm,
SortUtil.swap(data,l,r); r$}C<a[U
} 7t:tS7{}
while(l SortUtil.swap(data,l,r); 13`Mt1R
return l;
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} X<P
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改进后的快速排序: ~IS8DW$;
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package org.rut.util.algorithm.support; _gI1rXI
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import org.rut.util.algorithm.SortUtil; d%"XsbO
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/** d6YXITL)\>
* @author treeroot 4n@lrcq(
* @since 2006-2-2 Es%f@$0uy
* @version 1.0 kzDN(_<1
*/ dQ.#8o=
public class ImprovedQuickSort implements SortUtil.Sort { t'l4$}(
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private static int MAX_STACK_SIZE=4096; P*OG`%y
private static int THRESHOLD=10; zqo0P~
/* (non-Javadoc) L ,dh$F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kz7FQE
*/ 0lg$zi x(
public void sort(int[] data) { ~\jP+[>M'
int[] stack=new int[MAX_STACK_SIZE]; Wye* ~t
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int top=-1; A51
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int pivot; f
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int pivotIndex,l,r; <m]0!ii
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stack[++top]=0; Q'/sP 5Pj
stack[++top]=data.length-1; _SAM8!q4,
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while(top>0){ oAQQ OtpZN
int j=stack[top--]; (Xh<F
int i=stack[top--]; tQ|c.`)W
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pivotIndex=(i+j)/2; g
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pivot=data[pivotIndex]; .B:ZyTI
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SortUtil.swap(data,pivotIndex,j); b>;?{
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file://partition :>0ywg
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do{ MA`nFkVK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'Qy6m'esW
SortUtil.swap(data,l,r); $0_K&_5w~
} >^s2$@J?p
while(l SortUtil.swap(data,l,r); !9;m~T7.
SortUtil.swap(data,l,j); &Hb%Q! ^Kb
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if((l-i)>THRESHOLD){ o$*(N
stack[++top]=i; d @R7b^#g
stack[++top]=l-1; qVC+q8
} M\R+:O&
if((j-l)>THRESHOLD){ 4YfM.~
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stack[++top]=l+1; 9 C[~*,qx
stack[++top]=j; NUV">i.(
} q<&1,^A
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} ^4n#''wJ
file://new InsertSort().sort(data); \l GD8@,x
insertSort(data); COh#/-`\1
} ``l*;}
/** yB UQ!4e
* @param data ?'> .>
*/ 1Wpu
private void insertSort(int[] data) { \zBi-GI7
int temp; &-=~8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hxoajexU
} oco,sxT
} \s)MNs
} fd'kv
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} :h(HKMSk1
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归并排序: KQfWpHwfj
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package org.rut.util.algorithm.support; >Sc yc-n
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import org.rut.util.algorithm.SortUtil; )L b` 4B
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/** ?|5M'o|9
* @author treeroot 2.^{4 1:
* @since 2006-2-2 }097[-g7
* @version 1.0 B?j t?
*/ Ch"wp/[
public class MergeSort implements SortUtil.Sort{ S`s]zdUTP
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/* (non-Javadoc) sC3Vj(d!i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Bu*%+
*/ |+Wn5iT
public void sort(int[] data) { gv67+Mf
int[] temp=new int[data.length]; _#{ *I(l
mergeSort(data,temp,0,data.length-1); lj<Sa
} #L.,aTA<
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6_`Bo%
int mid=(l+r)/2; T~3{$
if(l==r) return ; FAM{p=t]HT
mergeSort(data,temp,l,mid); ZxtO.U2
mergeSort(data,temp,mid+1,r); ;^N
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for(int i=l;i<=r;i++){ Zn9u&!T&
temp=data; h7Uj "qH
} iy~h|YK;
int i1=l; sK#)k\w>
int i2=mid+1; Zu"qTJE/1
for(int cur=l;cur<=r;cur++){ xKu#OH
if(i1==mid+1) Rw'}>?k]
data[cur]=temp[i2++]; WaB0?jI
else if(i2>r) 6xDk3
data[cur]=temp[i1++]; 336ETrG^0
else if(temp[i1] data[cur]=temp[i1++]; ,=+t2Bn
else ]$2 yV&V