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。 oUW)H
插入排序: @4 zi]v
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package org.rut.util.algorithm.support; Z!C`f/h9
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import org.rut.util.algorithm.SortUtil; ^CowJ(y(
/** .Q=2WCv0
* @author treeroot (z8]FT
* @since 2006-2-2 @-)<|orU4
* @version 1.0 \iFMU#
*/ ?aK'OIo
public class InsertSort implements SortUtil.Sort{ 9@KUqoX
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/* (non-Javadoc) (lyt"Ty
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @<@R=aqE
*/ %8}WX@SB
public void sort(int[] data) { ua]\xBWx
int temp; YtwmlIar`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \Dvl%:8
} /0B07B
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冒泡排序: )64LKb$
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package org.rut.util.algorithm.support; R9b/?*%=9
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import org.rut.util.algorithm.SortUtil; M iP[UCh
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/** "_ PH "W
* @author treeroot !SLP8|Cd
* @since 2006-2-2 C:'WX*W
* @version 1.0 ]p4`7@@)*
*/ #}[Sj-Vp
public class BubbleSort implements SortUtil.Sort{ ql#{=oGDnA
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/* (non-Javadoc) rh:s
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TTA{#[=7
*/ d&PE,$XC
public void sort(int[] data) { ImUQ*0
int temp; "4Vi=* 2V
for(int i=0;i for(int j=data.length-1;j>i;j--){ /t$+Af,}
if(data[j] SortUtil.swap(data,j,j-1); htUy2v#V
} h/0<:eZ*
} w%i+>\tO
} X_-Hrp!h
}
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选择排序: ugIm:bg&
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package org.rut.util.algorithm.support; ^D]7pe
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import org.rut.util.algorithm.SortUtil; yiv RpSL
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/** p"hm.=,
* @author treeroot ++J Bbuzj!
* @since 2006-2-2 .XV]<)<K$
* @version 1.0 dK0}% ]i3#
*/ |g7nh[
public class SelectionSort implements SortUtil.Sort { ])Q9=?Sd}
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/* EO o'a
* (non-Javadoc) K,lK\^y
* h@PMCmf_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dyQ<UT
*/ $4$?M[
public void sort(int[] data) { h8iaJqqvJ
int temp; ~,1-$#R
for (int i = 0; i < data.length; i++) { CO:m]oj
int lowIndex = i; bBeFL~
for (int j = data.length - 1; j > i; j--) { mR"2
if (data[j] < data[lowIndex]) { M\Uc;:) H
lowIndex = j; 2HvTM8
} +H)!uLvaB
} V',m $
SortUtil.swap(data,i,lowIndex); ^td!g1"<
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Shell排序: M@!]U:5~V
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package org.rut.util.algorithm.support; h|c:!VN@
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import org.rut.util.algorithm.SortUtil; 2#$}yP~
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/** LhVLsa(-%
* @author treeroot DiGUxnP
* @since 2006-2-2 dFI.`pB
* @version 1.0 m&3HFf
*/ .swgXiRvs
public class ShellSort implements SortUtil.Sort{ J#Ne:Aj_
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/* (non-Javadoc) NR;S3-Iq(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z/P^-N>
*/ A_6/umF[ZA
public void sort(int[] data) { >"sKfiM)b
for(int i=data.length/2;i>2;i/=2){ Tg<>B
for(int j=0;j insertSort(data,j,i); QRg"/62WCD
} 4Rrw8Bw
} =CG!"&T
insertSort(data,0,1); \K_!d]I {
} T,xVQ4J?
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/** 6gg# Z
* @param data <750-d!
* @param j <@x+N%C
* @param i RBv=
*/ mk[d7Yt{O
private void insertSort(int[] data, int start, int inc) { iaa (ce
int temp; }'w^<:RSy
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m|#(gX|F
} =B o4yN
} P60]ps!M
} e$/Zb`k
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} x%:>Ol
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快速排序: ,h^;~|GT
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; qG2\`+v
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/** >ihe|WN
* @author treeroot ZZFI\o
* @since 2006-2-2 HZr/0I?
* @version 1.0 =DF@kR[CH"
*/ 1+i
public class QuickSort implements SortUtil.Sort{ v0jz)z<#
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/* (non-Javadoc) `X.=uG+m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v-r[~
*/ ("P mB?20
public void sort(int[] data) { t-<[._:+
quickSort(data,0,data.length-1); (?&_6B.*
} <1'X)n&Kw$
private void quickSort(int[] data,int i,int j){ @=zBF'<.9
int pivotIndex=(i+j)/2; 6 peM4X
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SortUtil.swap(data,pivotIndex,j); ->"h5h
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int k=partition(data,i-1,j,data[j]); d8 BK/b
SortUtil.swap(data,k,j); KJvJUq
if((k-i)>1) quickSort(data,i,k-1); -I$txa/"|
if((j-k)>1) quickSort(data,k+1,j); q@RY.&mgW
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} ?BWvF]p5/
/** _^2[(<Gmv
* @param data $85o%siS'
* @param i 3xCA\*
* @param j C;:1CK
* @return %ucmJ-<y#
*/ ##+8GLQM
private int partition(int[] data, int l, int r,int pivot) { WbD C
do{ Kp=3\) &
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $d??(
SortUtil.swap(data,l,r); )i6U$,]
} $b
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while(l SortUtil.swap(data,l,r); . =foXN
return l; 9q,JqB
} |Nd.'|g,
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} 5tCq}]q#P
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改进后的快速排序: "y
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package org.rut.util.algorithm.support; Xi`U`7?D(=
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import org.rut.util.algorithm.SortUtil; ^CZ|ci6bX
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/** ?KuJs9SM
* @author treeroot fN%5D z-e
* @since 2006-2-2 *1$~CC7
* @version 1.0 .L TFa.jxA
*/ hpi_0lMkI
public class ImprovedQuickSort implements SortUtil.Sort { <n~g+ps
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private static int MAX_STACK_SIZE=4096; ZwrYss
private static int THRESHOLD=10; u(G;57ms
/* (non-Javadoc) (lck6v?h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PQ#-.K
*/ ,c %gwzU
public void sort(int[] data) { I;m@cSJ|j
int[] stack=new int[MAX_STACK_SIZE]; EV,NJ3V
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int top=-1; c"&!=@
int pivot; X'Il:SK
int pivotIndex,l,r; !J?=nSu
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stack[++top]=0; >`V|`Zi ?
stack[++top]=data.length-1; AkQFb2|ir
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while(top>0){ o?hw2-mH
int j=stack[top--]; VKfHN_m*
int i=stack[top--]; /ykxVCvAt
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pivotIndex=(i+j)/2; 4Jy,IKPp
pivot=data[pivotIndex]; j<-o{6r
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SortUtil.swap(data,pivotIndex,j); "=TTsxyM6P
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file://partition m3!MHe~t
l=i-1; TV>R(D3T/
r=j; 8;Bwz RtgT
do{ `TR9GWU+B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "uERa(i
SortUtil.swap(data,l,r); w]YyU5rhS
} ej53O/hP
while(l SortUtil.swap(data,l,r); .0;k|&eBD
SortUtil.swap(data,l,j); 0YRYCO$
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if((l-i)>THRESHOLD){ CbaAnm1
stack[++top]=i; QMpA~x_m
stack[++top]=l-1; (eIxU&o'
} Y0C<b*!"ST
if((j-l)>THRESHOLD){ N<r0I-
stack[++top]=l+1; X10TZ
stack[++top]=j; <