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。 .3qu9eP
插入排序: M" lg%j
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package org.rut.util.algorithm.support; /s:fW+C
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import org.rut.util.algorithm.SortUtil; _D7 ]-3uC!
/** JC?N_kP%W
* @author treeroot ^]C&tG0 !
* @since 2006-2-2 ]88];?KS}
* @version 1.0 qPGuo5^
*/ xJ8%<RR!t
public class InsertSort implements SortUtil.Sort{ X|LxV]
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/* (non-Javadoc) H6TD@kL9Wr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v4/-b4ET
*/ ]bdFr/!'S+
public void sort(int[] data) { 6=hk=2]f
int temp; e 8\;t"D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rf-[svA
} .4y>QN#VL
} $4SzUZ0
} "Dcs])7Q
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} xw^.bz|
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冒泡排序: +UN <Zp7I/
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package org.rut.util.algorithm.support; Y.#:HRtgW
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import org.rut.util.algorithm.SortUtil; ef! XV7P
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/** 7Z,opc
* @author treeroot y@V_g'
* @since 2006-2-2 _6@hTen`
* @version 1.0 UaG1c%7?X
*/ 3riw1r;Q
public class BubbleSort implements SortUtil.Sort{ UYP9c}_,4
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/* (non-Javadoc) fl\aqtF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J8a*s`ik
*/ "6ECgyD+E!
public void sort(int[] data) { `Mj}md;O"
int temp; -f1k0QwL
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0JuD^
if(data[j] SortUtil.swap(data,j,j-1); TJ8E"t*)
} +k<w!B*
} x`RTp:#
} ,|?CU
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} ]q5`YB%_
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} @wmi5oExc
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选择排序: qSCv )S(
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package org.rut.util.algorithm.support; &)F*@C-
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import org.rut.util.algorithm.SortUtil; G$zL)R8GE|
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/** 2I1uX&g
* @author treeroot NG&_?|OmV
* @since 2006-2-2 P>Euq'ajX
* @version 1.0 S"m cUU}}
*/ o KD/rI
public class SelectionSort implements SortUtil.Sort { j9+I0>#X
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/* &ZHC-qMRK
* (non-Javadoc) )}%O>%
* AdZ;j6#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^E`(*J/o
*/ fQK"h
public void sort(int[] data) { /2M.~3gQ
int temp; rx"s!y{!-
for (int i = 0; i < data.length; i++) { RR;AJ8wd
int lowIndex = i; w@\vHH.;V
for (int j = data.length - 1; j > i; j--) { (UCK;k
if (data[j] < data[lowIndex]) { vR6Bn
lowIndex = j; k^ F@X
} 2f`nMW
} YT/kC'A
SortUtil.swap(data,i,lowIndex); PYRd]%X
} ^I6^g
} zjL.Bhiud
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} jDM
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Shell排序: ;{[>&4
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package org.rut.util.algorithm.support; \qvaE+
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import org.rut.util.algorithm.SortUtil; ow=UtA-^O
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/** Q^K "8 ;
* @author treeroot ]{~NO{0@Y
* @since 2006-2-2 [[~w0G~1
* @version 1.0 e}VBRvr
*/ &M/0g]4p
public class ShellSort implements SortUtil.Sort{ kU-t7'?4
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/* (non-Javadoc) 9vNkZ-1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + 1IQYa|
*/ /"H`.LD.?
public void sort(int[] data) { w=h1pwY
for(int i=data.length/2;i>2;i/=2){ f~OU*P>V@
for(int j=0;j insertSort(data,j,i); Xb
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} P #F=c34u
} vzel#
insertSort(data,0,1); Y!q!5Crfi
} -V"22sR]
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/** Uawpfgc}
* @param data $GQ`clj<
* @param j :!;'J/B@..
* @param i . #Z+Z
*/ R:JX<Ba
private void insertSort(int[] data, int start, int inc) { Ll4bdz,
int temp; H
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !|q<E0@w\
} %S`
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} YJS{i
} &bz:K8c
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} dUgrKDNyA
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快速排序: '/Bidb?
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package org.rut.util.algorithm.support; e6X[vc|Y}
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import org.rut.util.algorithm.SortUtil; D9mz9
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/** V]c;^
* @author treeroot +#b:d=v!
* @since 2006-2-2 0c.s
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* @version 1.0 }),w1/#5u8
*/ t&5%?QyM
public class QuickSort implements SortUtil.Sort{ be5,U\&z
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/* (non-Javadoc) iVFkYx%}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SYeadsvF
*/ 04%S+y.6&Y
public void sort(int[] data) { &|%6|u9
quickSort(data,0,data.length-1); "x941}
} L{l6Dd43q
private void quickSort(int[] data,int i,int j){ ~A<H9Bw
int pivotIndex=(i+j)/2; xR"M*%{@0
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SortUtil.swap(data,pivotIndex,j); o]{uc,
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int k=partition(data,i-1,j,data[j]); S.B<pjgt
SortUtil.swap(data,k,j); $qF0ltUQ
if((k-i)>1) quickSort(data,i,k-1); t:JI!DR
if((j-k)>1) quickSort(data,k+1,j); G
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} 8,O33qwH
/** %xlqF<
* @param data v{i7h|e
* @param i =.|J!x
* @param j OI}
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* @return d0hhMx6$
*/ Y
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private int partition(int[] data, int l, int r,int pivot) { p\C%%
do{ wpA`(+J
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); % |q0-x
SortUtil.swap(data,l,r); G>YAJo
} (vR 9H(#
while(l SortUtil.swap(data,l,r); a</D_66
return l; ?Y:x[pOe
} ;)Kh;;e
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} xX0-]Y h:
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改进后的快速排序: d"G+8}.4
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package org.rut.util.algorithm.support; PCd0 ?c
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import org.rut.util.algorithm.SortUtil; /$n ~lf
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/** C
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* @author treeroot 6m .k;'
* @since 2006-2-2 ~,D@8tv
* @version 1.0 p3ISWJa!
*/ `"i Y*
public class ImprovedQuickSort implements SortUtil.Sort { Q@e[5RA+]
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private static int MAX_STACK_SIZE=4096; sDgXU@
private static int THRESHOLD=10; IYWjHE+)d
/* (non-Javadoc) >Sa*`q3J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1\RGM<q$f
*/ M:Er_,E
public void sort(int[] data) { n}A\2bO
int[] stack=new int[MAX_STACK_SIZE]; $&|y<Y=
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int top=-1;
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int pivot; ?#0snlah|
int pivotIndex,l,r; C\_zdADUb%
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stack[++top]=0; bG&"9b_c
stack[++top]=data.length-1; }14{2=!Q
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while(top>0){ <
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int j=stack[top--]; ?6Cz[5\
int i=stack[top--]; [=uo1%
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pivotIndex=(i+j)/2; d#:3be{|&q
pivot=data[pivotIndex]; %zC[KE*~
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SortUtil.swap(data,pivotIndex,j); HQ9f ,<
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file://partition #5sD{:f`
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do{ *IlaM'[*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yTE%hHH]&[
SortUtil.swap(data,l,r); &