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。 9;.dNdg>
插入排序: d+=;sJ
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package org.rut.util.algorithm.support; WMrK8e'
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import org.rut.util.algorithm.SortUtil; 1298&C@
/** _QCAV+K'
* @author treeroot eQzTb91
* @since 2006-2-2 KPKby?qQ^
* @version 1.0 dBCg$Rud&
*/ (/PD;R$b
public class InsertSort implements SortUtil.Sort{ bvZmozbD
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/* (non-Javadoc) L{aT"Of{X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }eBy
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public void sort(int[] data) { g=a-zg9LX
int temp; ""TRLs!:M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h%#@Xd>.
} v)BUt,A
} %o.+B~r
} %N>@( .
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冒泡排序: aNfgSo05@n
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package org.rut.util.algorithm.support; eDG=-a4
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import org.rut.util.algorithm.SortUtil; =T;%R^@
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/** Q"%L
* @author treeroot -K+gr sb
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* @since 2006-2-2 POx~m
* @version 1.0 :N(L7&<
*/ jt;68SA
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public class BubbleSort implements SortUtil.Sort{ 6]na#<
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/* (non-Javadoc) ,1QU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z$Qlr:7
*/ #kk_iS>8
public void sort(int[] data) { Nqz-Mr`
int temp; 3)I v8mA
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2L ~U^
if(data[j] SortUtil.swap(data,j,j-1); lYU_uFOs\
} RQv`D&u_
} ykM(`
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} W>'R<IY4#N
} s|YY i~
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选择排序: 6<FJ`l]U9
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package org.rut.util.algorithm.support; 7vgz=-
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import org.rut.util.algorithm.SortUtil; si0jXue~j\
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/** ^i#F+Q`1
* @author treeroot QfRt3\^`
* @since 2006-2-2 mLKwk6I
* @version 1.0 j =[Td
*/ g7#_a6
public class SelectionSort implements SortUtil.Sort {
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/* %]RzC`NZ
* (non-Javadoc) F71.%p7C8"
* Bglh}_X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RwN*/Li
*/ bQEQHqY5
public void sort(int[] data) { 866n{lyL
int temp; rn U2EL
for (int i = 0; i < data.length; i++) { MvJEX8M
int lowIndex = i; X2T)]`@
for (int j = data.length - 1; j > i; j--) { 5>"-lB &
if (data[j] < data[lowIndex]) { Mt<TEr}7Z=
lowIndex = j; Q{V|{yV^y
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} (N0G[(>
SortUtil.swap(data,i,lowIndex); *}A J7]
} |_
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Shell排序: 5k<qJ9
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package org.rut.util.algorithm.support; Mryi6X T
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import org.rut.util.algorithm.SortUtil; \} P} H
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/** zT`LPs6T
* @author treeroot K%$%9y
* @since 2006-2-2 xsV(xk4
* @version 1.0 )#M*@e$k
*/ Ga"$_DyM
public class ShellSort implements SortUtil.Sort{ 5}E8Tl
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/* (non-Javadoc) )nTOIfP2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mvlK~c8
*/ n"-cX)
public void sort(int[] data) { J*A<F'^F1
for(int i=data.length/2;i>2;i/=2){ )!e-5O49r
for(int j=0;j insertSort(data,j,i); 2Cj?k.Zk
} 6*{N{]`WZ)
} }"2
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insertSort(data,0,1); O83vPK
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} ^1Y0JQ
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/** _Z@- q
* @param data 0ppZ~}&
* @param j #p6#,PZ
* @param i 5<Xq7|Jt
*/ &iId<.SiJ
private void insertSort(int[] data, int start, int inc) { CXb)k.L
int temp; lpj$\WI=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %koHTWT+
} `` 6?;Y
} C$b$)uI;
} hd8:| _
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快速排序: yv[s)c}
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package org.rut.util.algorithm.support; W,}HQ
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import org.rut.util.algorithm.SortUtil; CT6a
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/** 2~K.m@U}!Z
* @author treeroot K9;pX2^z9
* @since 2006-2-2 8m2-fuJz
* @version 1.0 =ugxPgn
*/ RL[?&L$7^%
public class QuickSort implements SortUtil.Sort{ ?sdVd
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/* (non-Javadoc) x3MV"hm2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8~u#?xs6
*/ ry/AF
public void sort(int[] data) { =O<Ul~JRK
quickSort(data,0,data.length-1); +q|2j>k@
} W52AX.Nm
private void quickSort(int[] data,int i,int j){ mh2t ' O
int pivotIndex=(i+j)/2; ?*tb|AL(R
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SortUtil.swap(data,pivotIndex,j);
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int k=partition(data,i-1,j,data[j]); x%jJvwb^|
SortUtil.swap(data,k,j); `u3to{
if((k-i)>1) quickSort(data,i,k-1); $,bLK|<hi
if((j-k)>1) quickSort(data,k+1,j); I?.$
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} .Qn54tS0q
/** ,)@Q,EHN;
* @param data 3tMs613
* @param i ?PO~$dUc]
* @param j D ?1$I0 =
* @return k`F$aQV9`
*/ Q?B5@J
private int partition(int[] data, int l, int r,int pivot) { )F,H(LblH
do{ jV;&*4if
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zZ3,e L
SortUtil.swap(data,l,r); OQ;DqV
} Em N0K'x
while(l SortUtil.swap(data,l,r); Bmm#5X@*
return l; K{%}kUj>
} %fGS< W;
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} ZqsI\"bj
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改进后的快速排序: @kK${
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package org.rut.util.algorithm.support; 3)^-A4~E
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import org.rut.util.algorithm.SortUtil; )@DH&
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/** z_~5c
* @author treeroot UN>!#Ji:$
* @since 2006-2-2 snT! 3t
* @version 1.0 +R@5e+auQ.
*/ K'+GK S7.
public class ImprovedQuickSort implements SortUtil.Sort { *Em 9R
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private static int MAX_STACK_SIZE=4096; .iNPLz1
private static int THRESHOLD=10; 8zP{Cmm
/* (non-Javadoc) w4H3($
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Pjo9z
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*/ (1T2?mO
public void sort(int[] data) { , |CT|2D>
int[] stack=new int[MAX_STACK_SIZE]; rR@ t5
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int top=-1; D642}VD
int pivot; h@7Shp
int pivotIndex,l,r; wXIsc;
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stack[++top]=0; e; 5n.+m
stack[++top]=data.length-1; M:z)uLDw
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while(top>0){ x_CB'Rr6
int j=stack[top--]; !2s<
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int i=stack[top--]; % <
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pivotIndex=(i+j)/2; ;Y5"[C9|
pivot=data[pivotIndex]; _Il/ i&
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SortUtil.swap(data,pivotIndex,j); oqH811
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do{ 3U9]&7^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KY9sa/xO
SortUtil.swap(data,l,r); fo9O+e s
} F/sXr(7
while(l SortUtil.swap(data,l,r); jFf2( AR
SortUtil.swap(data,l,j); ( >zXapb2
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if((l-i)>THRESHOLD){ -H5n>j0!{
stack[++top]=i; Wu(6FQ`H
stack[++top]=l-1; -&I%=0q
} w-*$gk]
if((j-l)>THRESHOLD){ ^UHt1[
stack[++top]=l+1; R}IMX9M=
stack[++top]=j; Wly-z$\
} mO;X>~K
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} -fFM-gt^t
file://new InsertSort().sort(data); y
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insertSort(data); gVjI1{WTK
} <yz)iCU?
/** vU0j!XqE
* @param data OQ;'Xo
*/ Oaf!\z}
private void insertSort(int[] data) { I9O!CQCTt
int temp; +O>!x#)&"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0l#gS;
} kKFmTo
} -Zc
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} b3N>RPsHS
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} v*`$is+
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归并排序: 5 fY\0
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package org.rut.util.algorithm.support; L"6qS3 [=
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import org.rut.util.algorithm.SortUtil; <