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。 Io[NN aF|
插入排序: vn!3Z! dm(
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package org.rut.util.algorithm.support; kW1w;}n$
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import org.rut.util.algorithm.SortUtil; C!ch
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/** g[bu9i
* @author treeroot *,IK4F6>:
* @since 2006-2-2 QZIzddwp
* @version 1.0 )(_NFpM
*/ E
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public class InsertSort implements SortUtil.Sort{ !Q*w]
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/* (non-Javadoc) EW1,&H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +I3O/=)
*/ /|<SD.:
public void sort(int[] data) { >]_^iD]*t
int temp; l1KgPRmEP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @0]WMI9B"B
} GC' e
} kkWv#,qwU
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冒泡排序: +:4>4=
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package org.rut.util.algorithm.support; 1dw{:X=j
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import org.rut.util.algorithm.SortUtil; I:G8B5{J
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/** q7f`:P9~
* @author treeroot C\~}ySQc.e
* @since 2006-2-2 Bv!{V)$
* @version 1.0
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*/ >}%#s`3W1_
public class BubbleSort implements SortUtil.Sort{ iC/*d
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/* (non-Javadoc) aHmg!s}&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )E*f30
*/ 6]~/`6Dub
public void sort(int[] data) { {+=hYB|&
int temp; @uCi0P t
for(int i=0;i for(int j=data.length-1;j>i;j--){ .P aDR |!
if(data[j] SortUtil.swap(data,j,j-1); T3@2e0u )
} ?]$<Ufr
} \fiy[W/k
} G<D8a2q
} GDSXBa*7
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} 'z
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选择排序: UMe?nAC
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package org.rut.util.algorithm.support; [`b,SX
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import org.rut.util.algorithm.SortUtil; \} v@!PQl
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/** m~AAO{\:b
* @author treeroot jVd`J
* @since 2006-2-2 i0K 2#}=^
* @version 1.0 -0kMh.JYR
*/ 1F,U^O
public class SelectionSort implements SortUtil.Sort { Dg.~"h5mT
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/* H=C~h\me?
* (non-Javadoc) cM'MgX9
* q"<=^vi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M$%ON>Kq
*/ &uRT/+18W3
public void sort(int[] data) { O}zHkcL
int temp; P|@[D=y
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; 2PyuM=(Wt
for (int j = data.length - 1; j > i; j--) { v1~l=^4&
if (data[j] < data[lowIndex]) { 2=fM\G
lowIndex = j; a<q9~QS
} ftTD-d
} eLPtdP5k
SortUtil.swap(data,i,lowIndex); Hq 5#.rZ#
} S1Y,5,}
} X}(X\rp
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} yZ,pH1
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Shell排序: aC2Vz9e
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package org.rut.util.algorithm.support; g 4=1['wW
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import org.rut.util.algorithm.SortUtil; r+ 8Tp|%
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/** Y+Z+Y)K
* @author treeroot 2[`n<R\
* @since 2006-2-2 i=#\`"/
* @version 1.0 |OF3O,5z
*/ f\=
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public class ShellSort implements SortUtil.Sort{ *uRDB9#9,
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/* (non-Javadoc) '+/mt_re=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5}hQIO&^%
*/ \A\
public void sort(int[] data) { Sy <E@1
for(int i=data.length/2;i>2;i/=2){ L]z8'n,
for(int j=0;j insertSort(data,j,i); s3JzYDpy
} <tbs,lcw;
} 18%$Z$K,
insertSort(data,0,1); u-iQ
} P?>:YY53
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/** c{1)-&W
* @param data n^;-&
* @param j >g!$H}\
* @param i <Nrtkf4-O
*/ s-Gd{=%/q
private void insertSort(int[] data, int start, int inc) { GOdWc9Ta!
int temp; >Vq07R
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #pAN
} !1R?3rVQS
} Szu@{lpP@
} 0N!rIz
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} Pl'lmUR
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快速排序: .{t5_,P
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package org.rut.util.algorithm.support; aU.3
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import org.rut.util.algorithm.SortUtil; x4kQG e(
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/** 3'L =S
* @author treeroot `dX0F=Ag?
* @since 2006-2-2 XLiwE$:t%
* @version 1.0 3<)][<Ud
*/ 3%9XJ]Qao
public class QuickSort implements SortUtil.Sort{ b(@GKH"W
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/* (non-Javadoc) S3HyB
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Zmdlp@
*/ "\+\,C
public void sort(int[] data) { (g[WZB3x
quickSort(data,0,data.length-1); 3jfAv@I ~
} R>Ox(MG
private void quickSort(int[] data,int i,int j){ L^CB#5uG
int pivotIndex=(i+j)/2; 3hJ51=_0^
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SortUtil.swap(data,pivotIndex,j); 1jzu-s,F
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int k=partition(data,i-1,j,data[j]); R9- mq;u+
SortUtil.swap(data,k,j); 8.wtv5eZ
if((k-i)>1) quickSort(data,i,k-1); kene'
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if((j-k)>1) quickSort(data,k+1,j); MR4k#{:w
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} T%"wz3~
/** |DsT $~D
* @param data v`Y{.>[H[
* @param i {QdoIPr3
* @param j +,7vbs3
* @return 'bH~KK5
*/ WCqa[=v)t
private int partition(int[] data, int l, int r,int pivot) { fO#nSB/
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do{ W%&s$b(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /Trbr]lWy
SortUtil.swap(data,l,r); 4%<wxrod
} * _usVg
while(l SortUtil.swap(data,l,r); /={N^8^=x
return l; /VEK<.,aMv
} hfc~HKLC
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} i;qij[W. z
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改进后的快速排序: 4kV$JV.l
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package org.rut.util.algorithm.support; 'F/uD1;
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import org.rut.util.algorithm.SortUtil; !"hzGgOOX
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/** M djxTr^
* @author treeroot 2"}Vfy
* @since 2006-2-2 211T}a
* @version 1.0 I+3=|Vef
*/ F_/ra?WVH
public class ImprovedQuickSort implements SortUtil.Sort { m9c`"!
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private static int MAX_STACK_SIZE=4096; y^Q);siSy
private static int THRESHOLD=10; >s.y1Vg~C
/* (non-Javadoc) d mTZEO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F]<2nb7
*/ ,5T1QWn^f
public void sort(int[] data) { 33~8@]b
int[] stack=new int[MAX_STACK_SIZE]; #l9sQ-1Q
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int top=-1; d}|z+D
int pivot; Pv)^L
int pivotIndex,l,r; BT3yrq9
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stack[++top]=0; aN,?a@B
stack[++top]=data.length-1; #_IuB) qy
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while(top>0){ 7GErh,
int j=stack[top--]; $n47DW&
int i=stack[top--]; GZuWAa
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pivotIndex=(i+j)/2; |S<!'rY
pivot=data[pivotIndex]; O OABn*
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SortUtil.swap(data,pivotIndex,j); ^;[_CF_
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do{ )
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z TB6m`
SortUtil.swap(data,l,r); !\Cu J5U
} hl)jE
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while(l SortUtil.swap(data,l,r); 4L97UhLL
SortUtil.swap(data,l,j); tqp i{e
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if((l-i)>THRESHOLD){ ;K4uu<e\
stack[++top]=i; nYvkeT
stack[++top]=l-1; 9q[[
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} '
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if((j-l)>THRESHOLD){ ~,8#\]xR
stack[++top]=l+1; m*i,|{UZ
stack[++top]=j; w`M`F<_\:
} cbzS7q<)
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} >f1fvv6
file://new InsertSort().sort(data); DPmY_[OAE
insertSort(data);
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} Zz'g&ew