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。 -ysNo4#e&
插入排序: /:]<z6R
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package org.rut.util.algorithm.support; L+G0/G}O\
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import org.rut.util.algorithm.SortUtil; 842v^ 2
/**
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* @author treeroot TgjjwcO Y
* @since 2006-2-2 Q3%]
* @version 1.0 Y2tVq})!
*/ QuEX|h,F
public class InsertSort implements SortUtil.Sort{ c*B< -
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/* (non-Javadoc) TrzAgNt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Y^j=?1k
*/ \]4EAKJE
public void sort(int[] data) { qpFxl
int temp; =8#.=J[/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QxG^oxU}
} |pS]zD
} aV7VbC
}
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冒泡排序: 5.ab/uk;M
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package org.rut.util.algorithm.support; Dqo#+_v
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import org.rut.util.algorithm.SortUtil; baD063P;
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/** 5?HwM[`
* @author treeroot N@tKgx
* @since 2006-2-2 ~tWh6-:|{J
* @version 1.0 @gbW:
*/ IV!`~\@
public class BubbleSort implements SortUtil.Sort{ Wcc4/:`Hu
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/* (non-Javadoc) T8Mqu`$r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l0^cdl-
*/ ,v mn{gz
public void sort(int[] data) { LDEc}XXb
int temp; ~b*]jZwT
for(int i=0;i for(int j=data.length-1;j>i;j--){ /0qbRk i
if(data[j] SortUtil.swap(data,j,j-1); p~3x=X4
} 0ZwXuq
} *<S>PbqLw
} , @UOj=
}
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} Nc(CGl:
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选择排序: C{m%]jKH
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package org.rut.util.algorithm.support; vE^tdzAG
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import org.rut.util.algorithm.SortUtil; XQn1B3k+
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/** J;Z2<x/H
* @author treeroot O<Q8%Az
* @since 2006-2-2 &kzysv-_
* @version 1.0 M1WD^?tKQ.
*/ z]rr
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public class SelectionSort implements SortUtil.Sort { m-azd~r[
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/* l3p :}A
* (non-Javadoc) 3s?u05_
* NW5OLa")J<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q;VuoHj!
*/ o/7u7BQl2
public void sort(int[] data) { Le?g,c
int temp; >Y8\f:KQ
for (int i = 0; i < data.length; i++) { (eU 4{X7
int lowIndex = i; xE@/8h
for (int j = data.length - 1; j > i; j--) { P#!N
if (data[j] < data[lowIndex]) { gZ^Qt.6Z
lowIndex = j; QPB,B>Z
} u#EcR}=]
} XEA5A.uc
SortUtil.swap(data,i,lowIndex); ^D+^~>f
} B%uY/Mwz$
} 7Q&-ObW
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} =3(Auchl$Y
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Shell排序: l90"1I A
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package org.rut.util.algorithm.support; v
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import org.rut.util.algorithm.SortUtil; DNq(\@x[!
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/** l[:Aq&[o3
* @author treeroot &
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* @since 2006-2-2 1}a4AGAp
* @version 1.0 (&eF E ;c
*/ t}_ #N'`
public class ShellSort implements SortUtil.Sort{ *'{-!Y
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/* (non-Javadoc) rWL;pM<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MBg[hu%
*/
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public void sort(int[] data) { ?< b{
for(int i=data.length/2;i>2;i/=2){ L>~Tc
for(int j=0;j insertSort(data,j,i); .+ u
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} 1X5g(B
} PhC3F4
insertSort(data,0,1); :CE4<
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/** 0pMN@Cz6
* @param data '+_>PBOc
* @param j K2M=)B
* @param i =D$ED^W
*/ D`WRy}o
private void insertSort(int[] data, int start, int inc) { |~BnE
int temp; PX|@D_%Y=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @p*)^D6E\
} d)vP9vXy
} oV:oc,
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} Q"qI'*Kgt
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快速排序: l{Df{1b.
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package org.rut.util.algorithm.support; r+Ki`HD%
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import org.rut.util.algorithm.SortUtil; :/|"db&`
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/** 4`#Q
* @author treeroot )k,n}
* @since 2006-2-2 p@G7}'|eyA
* @version 1.0 nU_O|l9
*/ )6)bI.BY
public class QuickSort implements SortUtil.Sort{ W\kli';jyC
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/* (non-Javadoc) "9s_[e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A0)^I:&
*/ f zo'9
public void sort(int[] data) { d>hv-nD
quickSort(data,0,data.length-1); g.Xk6"kO
} v~Q'm1!O4\
private void quickSort(int[] data,int i,int j){ oa:YAqT
int pivotIndex=(i+j)/2; C")genMH
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SortUtil.swap(data,pivotIndex,j); ~'_cBJ
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int k=partition(data,i-1,j,data[j]); w2nReB z
SortUtil.swap(data,k,j); \2s`mCY
if((k-i)>1) quickSort(data,i,k-1); [Iks8ZWr_
if((j-k)>1) quickSort(data,k+1,j); O6;"cUv
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} f(5(V
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/** ^OY]Y+S`Ox
* @param data +%W8Juu
* @param i 4qie&:4j
* @param j ZkbE&7Z
* @return !y_{mE?V(
*/ _HUbE /
private int partition(int[] data, int l, int r,int pivot) { sE"s!s/
do{ :k/Xt$`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5Ml=<^
SortUtil.swap(data,l,r); HK!ecQ^+
} Z0Z6aZeb
while(l SortUtil.swap(data,l,r); {]^Ixm-,f
return l; }S/i3$F0~
} 1]7gYNzV"
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} Ym6d'd<9(
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改进后的快速排序: q?(]
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package org.rut.util.algorithm.support; sW[-qPK<
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import org.rut.util.algorithm.SortUtil; >c,s}HJ
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/** ! K>iSF<
* @author treeroot 4KH492Nq9
* @since 2006-2-2 sT\:**
* @version 1.0 )Z/"P\qo
*/ T`EV
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public class ImprovedQuickSort implements SortUtil.Sort { *|AQV:
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; 7PY$=L48A
/* (non-Javadoc) 2zTi/&K&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Q;j@yx
*/ j!u)V1,
public void sort(int[] data) { 9-ozrw8t
int[] stack=new int[MAX_STACK_SIZE]; &N7ji
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int top=-1; L^+rsxR
int pivot; VPUVPq~&
int pivotIndex,l,r; 1^\w7Rew2
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stack[++top]=0; j#](Q!
stack[++top]=data.length-1; i5 rkP`)j
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while(top>0){ ukWn@q*
int j=stack[top--]; 1-_r\sb
int i=stack[top--]; \fA{ sehdL
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pivotIndex=(i+j)/2; 3'4+3Xo
pivot=data[pivotIndex]; V%s
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SortUtil.swap(data,pivotIndex,j); Kw
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