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。 "Q
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插入排序: JWdG?[$
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package org.rut.util.algorithm.support; mn4;$1~e>H
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import org.rut.util.algorithm.SortUtil; -'VT
/** }N|/b"j9
* @author treeroot e.kt]l
* @since 2006-2-2 {r}}X@|5
* @version 1.0 6FmgK"t8
*/ 2bC%P})m
public class InsertSort implements SortUtil.Sort{ PJ.jgN(r
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/* (non-Javadoc) a|53E<5X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^R$dG[Qf
*/ j,-7J*A~
public void sort(int[] data) { F>Oh)VL,Ev
int temp; ~VGK#'X:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Cwh;+3?C|
} [*<&]^
} VA%i_P,
} 0q;] ;m
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} "O
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冒泡排序: atAA[~
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package org.rut.util.algorithm.support; `j$d(+Gv
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import org.rut.util.algorithm.SortUtil; M*HG4(n0
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/** PWU#`>4
* @author treeroot =w8 YZs8w
* @since 2006-2-2 Lgfr"{C
* @version 1.0 srkOad
*/ gA|j\T{c
public class BubbleSort implements SortUtil.Sort{ u^uG_^^,/
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/* (non-Javadoc) qTGy\i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZSSgc0u^?
*/ K7Vr$,p
public void sort(int[] data) { !R@4tSu
int temp; F"C Yrt
for(int i=0;i for(int j=data.length-1;j>i;j--){ )1,&YJM*6l
if(data[j] SortUtil.swap(data,j,j-1); gD\}CxtG
} $gTPW,~s[
} iD`XD\.?
} }{y$$X<:
} 8gxLL59
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} "lZ<bG
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选择排序:
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package org.rut.util.algorithm.support; co80M;4
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import org.rut.util.algorithm.SortUtil; 1aG}-:$t'
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/** A{%;Hd`0/
* @author treeroot 4Ccb!?
* @since 2006-2-2 >xKRU5
* @version 1.0 TbVL71c
*/ U'G`Q0n
public class SelectionSort implements SortUtil.Sort { QEKFuY<E+
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/* xn8B|axB
* (non-Javadoc) oUSG`g^P(M
* 8|GpfW3p2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j[cjQ]>~'
*/ 1n"X?K5;A
public void sort(int[] data) { &L]*]Xz;
int temp; 7p$*/5fk
for (int i = 0; i < data.length; i++) { #O+]ydvT
int lowIndex = i; #^ #i]{g
for (int j = data.length - 1; j > i; j--) { ZB&Uhi
if (data[j] < data[lowIndex]) { Rp*t"HSaAW
lowIndex = j; ~2431<YV
} PEIr-qs%D
} BkfBFUDQ
SortUtil.swap(data,i,lowIndex); !e `=UZe1
} Hrnql
} j.}V~Sp*
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} n #I}!x>2
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Shell排序: =[+&({
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package org.rut.util.algorithm.support; *,*qv^
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import org.rut.util.algorithm.SortUtil; Dt.Wb&V_w
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/** %
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* @author treeroot VH6|(=8
* @since 2006-2-2 n0pe7/Ai
* @version 1.0 %Qz`SO8x?
*/ #UD
public class ShellSort implements SortUtil.Sort{ DG?\6Zh
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/* (non-Javadoc) YO0x68
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) );DIrA
*/ 2kq@*}ys
public void sort(int[] data) { 8]\h^k4f
for(int i=data.length/2;i>2;i/=2){ {fv8S;|u
for(int j=0;j insertSort(data,j,i); FF~4y>R7u
} neFno5d j
} OZm[iH
insertSort(data,0,1); D.R
} \#,#_
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/** ix @rq#
* @param data RgA4@J#
* @param j L.[uMuUa
* @param i d<? :Q
*/ 0\nhg5]?
private void insertSort(int[] data, int start, int inc) { \Pmk`^T
int temp; )#~fS28j
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N|2
} B1#>$"_0}=
} (1j$*?iGA
} L"6/"L
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} t~K!["g
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快速排序: wg_CI,Kq
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package org.rut.util.algorithm.support; 1|w:xG^
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import org.rut.util.algorithm.SortUtil; l]y%cJ~$'D
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/** v^_]W3K
* @author treeroot PVc|y.
* @since 2006-2-2 YPDsE&,J)
* @version 1.0 T)tHN#6I
*/ pbxcsA\
public class QuickSort implements SortUtil.Sort{ ~.`r(
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/* (non-Javadoc) OVSq8?L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T4Gw\Z%
*/ R&_\&:4f
public void sort(int[] data) { cYy@
quickSort(data,0,data.length-1); 4?M3#],'h
} cBR8HkP~
private void quickSort(int[] data,int i,int j){ JgKZ;GM:W
int pivotIndex=(i+j)/2; KXA)i5z
file://swap ,W8Iabi^
SortUtil.swap(data,pivotIndex,j); xp8f
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int k=partition(data,i-1,j,data[j]); l%U_iqL&
SortUtil.swap(data,k,j); (Cd{#j<
if((k-i)>1) quickSort(data,i,k-1); ~G:2iSi(#
if((j-k)>1) quickSort(data,k+1,j); c1A G3Nb
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} t:sq*d
/** ^pV>b(?qw
* @param data {r2|fgi
* @param i bd
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* @param j OPt;G,$ta
* @return UK_aqB
*/ XL/o y'_
private int partition(int[] data, int l, int r,int pivot) { 4zfRD`;
do{ ;zE5(3x
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xm,`4WdG
SortUtil.swap(data,l,r); ^N2M/B|0
} z vb}p
while(l SortUtil.swap(data,l,r); 46P6Bwobh
return l; P9TBQW2G{
} u6Qf*_- K
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} mV*/zWh_
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改进后的快速排序: T<e7(=
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package org.rut.util.algorithm.support; /sT
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import org.rut.util.algorithm.SortUtil; 9kX=99kf[
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/** c6Aut`dK
* @author treeroot oAZF3h]po
* @since 2006-2-2 ]dbSa1?
* @version 1.0 iA3>X-x
*/ xBRh!w
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; JYg% ~tW'
private static int THRESHOLD=10; t.E4Tqzc>
/* (non-Javadoc) wLOQhviI^-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]KXMGH_
*/ G=Hf&l
public void sort(int[] data) { y5/'!L)g
int[] stack=new int[MAX_STACK_SIZE]; '{0[&i*
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int top=-1; x9)aBB
int pivot; %/y`<lJz(
int pivotIndex,l,r; S~k*r{?H})
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stack[++top]=0; 7Y32p'
stack[++top]=data.length-1; ] dHB}
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while(top>0){ Oz&+{ c
int j=stack[top--]; +:> J Z$
int i=stack[top--]; +%Lt". o
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pivotIndex=(i+j)/2; yOWOU`y?
pivot=data[pivotIndex]; )_77>f%
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SortUtil.swap(data,pivotIndex,j); |As2"1_f
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file://partition SLtSqG7~
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r=j;
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do{ -!J2x8Ri
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W}XYmF*_?
SortUtil.swap(data,l,r); `l>93A
} b4Cfd?'
while(l SortUtil.swap(data,l,r); d/B'[Ur
SortUtil.swap(data,l,j); o3n3URu\
mG831v?
if((l-i)>THRESHOLD){ )RwBg8
stack[++top]=i; ?0rOcaTY
stack[++top]=l-1; iW|s|1mh3
} ge0's+E+1
if((j-l)>THRESHOLD){ E
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stack[++top]=l+1;
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stack[++top]=j; ?&znUoB
} ,Z>wbMJig
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} ?fK^&6pI
file://new InsertSort().sort(data); {ITv&5?>
insertSort(data); tu\mFHvlg
} 8zdT9y|Ig
/** ^
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* @param data $]@O/[
*/ x*.Ye5Jb
private void insertSort(int[] data) { }B y)y;~
int temp; 3{N\A5~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [E>R.Oe
} fO].e"}
} 8>UKIdp
} Fr-[UZ~V
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} M
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归并排序: - $U@By<SJ
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package org.rut.util.algorithm.support; [2Iau1<@
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import org.rut.util.algorithm.SortUtil; 6W5d7`A
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/** <