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。 L}*o8l`
插入排序: .4CDQ&B0K
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package org.rut.util.algorithm.support; ,H7_eVLWR
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import org.rut.util.algorithm.SortUtil; oWY3dc
/** .jQx2O
* @author treeroot lm4A%4-db
* @since 2006-2-2 s1 >8uW
* @version 1.0 |URfw5Hm
*/ %" H:z
public class InsertSort implements SortUtil.Sort{ FFw(`[A_
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/* (non-Javadoc) 7T)y"PZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kC.dJ2^j+
*/ 8UjIC4'
public void sort(int[] data) { CB#2XS>V
int temp; ^&YtZjV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K:U=Y$ x
} fF0K].
} 'bl9fO4v
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冒泡排序: m-O*t$6
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package org.rut.util.algorithm.support; :(~<BiqR(
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import org.rut.util.algorithm.SortUtil; RkG?R3e
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/** w]gLd
* @author treeroot E^rBs2;9
* @since 2006-2-2 bKS/T^UQ
* @version 1.0 EcHZmf
*/ I'P|:XKI
public class BubbleSort implements SortUtil.Sort{ _K9PA[m5~
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/* (non-Javadoc) uN<=v&]q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [s^pP2
*/ /1LN\Eu
public void sort(int[] data) { ]&]G
int temp; @TALZk'%
for(int i=0;i for(int j=data.length-1;j>i;j--){ |2^mCL.r
if(data[j] SortUtil.swap(data,j,j-1); oqwW
} !6|_`l>G,
} j4i$2ZT'
} OG<*&V
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选择排序: : _Y^o
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package org.rut.util.algorithm.support; h:pgN,W}
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import org.rut.util.algorithm.SortUtil; rmw}Ui"
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/** bsu?Q'q
* @author treeroot e Fs5l
* @since 2006-2-2 |5;,]lbt
* @version 1.0 s>G6/TTH6
*/ 65 zwi-
public class SelectionSort implements SortUtil.Sort { ^iEf"r
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/* {($m LfC4
* (non-Javadoc) 2+pw%#fe
* )b nGZ8h99
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Nik`v*Pd
*/ eM$a~4!d
public void sort(int[] data) { %.
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int temp; ;,U@zB;\%(
for (int i = 0; i < data.length; i++) { Ds]
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int lowIndex = i; Eo$l-Hl5=
for (int j = data.length - 1; j > i; j--) { T+XcEI6w
if (data[j] < data[lowIndex]) { ?T73BL=
lowIndex = j; >
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} o
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} a'`i#U
SortUtil.swap(data,i,lowIndex); xqk(id\&
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Shell排序: %tkqWK:
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package org.rut.util.algorithm.support; Pq~#SxA~
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import org.rut.util.algorithm.SortUtil; rMG[,:V
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/** dh]Hf,OLF
* @author treeroot <8%+-[(
* @since 2006-2-2 vH6(p(l
* @version 1.0 >7a
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*/ fPN/Mxu
public class ShellSort implements SortUtil.Sort{ r|Uz?
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/* (non-Javadoc) :D}?H@(69
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mK M[[l&A
*/ b^i$2$9_
public void sort(int[] data) { 2FL_!;p;2E
for(int i=data.length/2;i>2;i/=2){ 1;./e&%%
for(int j=0;j insertSort(data,j,i); 5D3&E_S
} :fX61S6)
} ce4rhtkV
insertSort(data,0,1); q@1A2L\Om
} .))k
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/** uR")@Tc
* @param data sfG9R"
* @param j LU*mR{B
* @param i vIi&D;
*/ QN;NuDHN
private void insertSort(int[] data, int start, int inc) { x?6^EB|@
int temp; +Rd\*b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RU.j[8N$
} 8fvKVS
} 2hntQ1[
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快速排序: jz'%(6#'gW
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package org.rut.util.algorithm.support; [PrJf"Z "
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import org.rut.util.algorithm.SortUtil; 8f?o?c|
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/** L(y~
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* @author treeroot HE4S%#bH>
* @since 2006-2-2 Qc9[/4R>
* @version 1.0 mV7_O//
*/ :'H}b*VWx
public class QuickSort implements SortUtil.Sort{ -K^(L#G
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/* (non-Javadoc) ;(g"=9e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oPAc6ObOV~
*/ -uAGG?ZER
public void sort(int[] data) { ciHTnC
quickSort(data,0,data.length-1); dg N#"
} cw
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private void quickSort(int[] data,int i,int j){ _Axw$oYS
int pivotIndex=(i+j)/2; qqYQ/4Ajw
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SortUtil.swap(data,pivotIndex,j); tr
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int k=partition(data,i-1,j,data[j]); C`oB [
SortUtil.swap(data,k,j); }D~m%%,
if((k-i)>1) quickSort(data,i,k-1); &@&^k$du8q
if((j-k)>1) quickSort(data,k+1,j); [eF|2:
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} &6Wim<*
/** CZv^,O(M?2
* @param data mh_GYzd
* @param i \bSakh71
* @param j kx0w?A8-
* @return /{ 8 .Jcx$
*/ |[bQJ<v6
private int partition(int[] data, int l, int r,int pivot) { =:RNpi,
do{ :d~&Dt<c
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x6yO2Yo
SortUtil.swap(data,l,r); b!;WF
} 4=ha$3h$
while(l SortUtil.swap(data,l,r); Z!?T&:
return l; j~ qm5}
} Mb%[Qp60
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改进后的快速排序: /3`fO^39Ta
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package org.rut.util.algorithm.support; No/D"S#
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import org.rut.util.algorithm.SortUtil; zy9W{{:P(1
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/** 6nk.q|n:g
* @author treeroot oA
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* @since 2006-2-2 "FfP&lF/
* @version 1.0 o,
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*/ P$A'WEO'
public class ImprovedQuickSort implements SortUtil.Sort { ~qW"v^<
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private static int MAX_STACK_SIZE=4096; Of$gs-
private static int THRESHOLD=10; Eid~4a
/* (non-Javadoc) >3ASrM+>w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |VX0o2
*/ h3-dJgb
public void sort(int[] data) { s[/)v:
int[] stack=new int[MAX_STACK_SIZE]; /%^^hr
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int top=-1; O6!:Qd
int pivot; EO.}{1m=hx
int pivotIndex,l,r; t4,(W`
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stack[++top]=0; r%oXO]X
stack[++top]=data.length-1; M#]URS2h<O
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while(top>0){ ) ]]PhGX~
int j=stack[top--]; ~M J3-<I
int i=stack[top--]; x@"`KiEUs
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pivotIndex=(i+j)/2; N%8aLD
pivot=data[pivotIndex]; ZltY_5l
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SortUtil.swap(data,pivotIndex,j); Q%RI;;YyA
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file://partition LfS]m>>e
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r=j; wo!;Bxo
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do{ ehYGw2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q\v^3u2;m`
SortUtil.swap(data,l,r); k'Z$#
} g`zC 0~D2
while(l SortUtil.swap(data,l,r); qgLj^{
SortUtil.swap(data,l,j); *6*/kV?F
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if((l-i)>THRESHOLD){ Ja6PX P]'
stack[++top]=i; e;)&Hc:Z
stack[++top]=l-1; ,n+~S^r
} ,1-#Z"~c
if((j-l)>THRESHOLD){ SSI('6Z/
stack[++top]=l+1; #kDJ>r |&-
stack[++top]=j; ~Aq$GH4
} <)9E .h
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} ?f[U8S}
file://new InsertSort().sort(data); nHi6$}
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insertSort(data); ~f>km|Q{u
} FiJU
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/** (&Z`P
* @param data })@LvYK
*/ MDKiwT@#
private void insertSort(int[] data) { 6P*2Kg`
int temp; ^c]lEo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :>otlI<0t
} q'awV5y
} (!`]S>_w9
} #AUz.WHD
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} B&