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。 %3FI>\3
插入排序: hf%W grO.
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package org.rut.util.algorithm.support; A~h8 >zz*
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import org.rut.util.algorithm.SortUtil; e_,_:|t
/** #&DJ3(T
* @author treeroot 2Q<_l*kk(
* @since 2006-2-2 smk0 *m4
* @version 1.0 {!x-kF_
*/ 64zO%F*
public class InsertSort implements SortUtil.Sort{ zu*h9}
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/* (non-Javadoc) bZa?h.IF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oi7:J>
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public void sort(int[] data) { ab
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int temp; ;/ p)vR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b}[{'
} mz/KGZ5t
} `t#C0
} JlGyGr^MD
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冒泡排序: EEF}Wf$f
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package org.rut.util.algorithm.support; SkN^ytKE
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import org.rut.util.algorithm.SortUtil; ?jb7Oq#[
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/** ~>)cY{wE_
* @author treeroot 9/^4W.
* @since 2006-2-2 W5sVQ`S-
* @version 1.0 {9Y@?
*/ vO
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public class BubbleSort implements SortUtil.Sort{ 0wxQ,PI1'
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/* (non-Javadoc) Qb9) 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NOo&5@z;H
*/ m;8_A|$A
public void sort(int[] data) { 7*u0)Hog
int temp; <9B43
for(int i=0;i for(int j=data.length-1;j>i;j--){ ])0&el3-
if(data[j] SortUtil.swap(data,j,j-1); >>K)
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} RrGS$<
} D3BX[
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} hg=\L5R
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选择排序: aRj3TtFh
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package org.rut.util.algorithm.support; {h|3P/?7
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import org.rut.util.algorithm.SortUtil; o y}(
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/** 1rTA0+h
* @author treeroot Eq'YtqU
* @since 2006-2-2 ,T"(97"
* @version 1.0 Q y$8!(
*/ >8 VfijK
public class SelectionSort implements SortUtil.Sort { $Iv*?S"2
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/* $F;$-2
* (non-Javadoc) %|r@q
* |M0 XLCNd_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 80l(,0`,
*/ <N+l"Re#]
public void sort(int[] data) { "yL&?B"9@
int temp; 5N`g
for (int i = 0; i < data.length; i++) { {tF=c0Z
int lowIndex = i; P@
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for (int j = data.length - 1; j > i; j--) { uqX"^dn4u
if (data[j] < data[lowIndex]) { nolTvqMT
lowIndex = j; OlMCF.W#3
} TJLz^%t
} (#\3XBG
SortUtil.swap(data,i,lowIndex); Y13IrCA2
} $?ke "
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Shell排序: %+xh
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package org.rut.util.algorithm.support; *l_1T4]S
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import org.rut.util.algorithm.SortUtil; |I85]'K9a
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/** <J[*~v%(
* @author treeroot dpGaI
* @since 2006-2-2 r{p?aG
* @version 1.0 \muyL?
*/ 4>$>XL1
public class ShellSort implements SortUtil.Sort{ }5zH3MPQH
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/* (non-Javadoc) n3~xiQ'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #^xiv/sV
*/ 4'G<qJoc
public void sort(int[] data) { B6OggJ9Iq
for(int i=data.length/2;i>2;i/=2){ "AUY+ LN
for(int j=0;j insertSort(data,j,i); 2$\Du9+
} m'z <d
} l&;#`\s!V
insertSort(data,0,1); k3^S^Bv\
} sL+/Eeb` c
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/** ewY+a ,t
* @param data o}Dy\UfU
* @param j Rf2;O<
* @param i <|s|6C
*/ h-Ffs
private void insertSort(int[] data, int start, int inc) { iHWl%]7sN
int temp; l*b3Mg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GC#3{71
} 6\/C]![%
} ?_}[@x
} X0Xs"--}
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} "4oY F:h
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快速排序: |*i0h`a
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package org.rut.util.algorithm.support; X1LwIa>
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import org.rut.util.algorithm.SortUtil; Ep
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/** SLGo/I*
* @author treeroot
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* @since 2006-2-2 uu5L9.i9
* @version 1.0 qhE1
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*/ -(ev68'}W
public class QuickSort implements SortUtil.Sort{ eW"L")
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/* (non-Javadoc) S!Z2aFj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y:;]qoF
*/ JSf \ApX
public void sort(int[] data) { (-e*xM m
quickSort(data,0,data.length-1); *{K?JB#W
} 3_5]0:?]-
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; Of@LEEh6
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SortUtil.swap(data,pivotIndex,j); m
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int k=partition(data,i-1,j,data[j]); 45
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SortUtil.swap(data,k,j); 'Edm /+
if((k-i)>1) quickSort(data,i,k-1); D# Gf.c
if((j-k)>1) quickSort(data,k+1,j); k1h>8z.Tg
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} /
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/** 9P7^*f:E
* @param data awC:{5R8v
* @param i To!`
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* @param j kWZ@v+Mk3
* @return *mVQN1
*/ J^y}3ON
private int partition(int[] data, int l, int r,int pivot) { X?B\+dq
do{ Xus TU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8N,mp>~
SortUtil.swap(data,l,r); #
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} <aRsogu"P
while(l SortUtil.swap(data,l,r); c|2+J:}p
return l; d"nms\=p
} QNcbl8@
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改进后的快速排序: 3jzmiS]
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package org.rut.util.algorithm.support; sz@Y$<o
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import org.rut.util.algorithm.SortUtil; @;b @O
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/** ^$x1~}D
* @author treeroot !S}d?8I6
* @since 2006-2-2 l\"wdS}
* @version 1.0 ?d5_{*]+v
*/ N${Wh|__^l
public class ImprovedQuickSort implements SortUtil.Sort { -Crm#Ib~
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private static int MAX_STACK_SIZE=4096; >mUSRf4
private static int THRESHOLD=10; %uQOAe55
/* (non-Javadoc) =DsFR9IB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'XP
*/ n h&[e
public void sort(int[] data) { u_'XUJ32!
int[] stack=new int[MAX_STACK_SIZE]; myqQqVW
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int top=-1; =`/GBT$
int pivot; FC
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int pivotIndex,l,r; g=Bge)
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stack[++top]=0; f=kt0
stack[++top]=data.length-1; 8umW>
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while(top>0){ }_,={<g
int j=stack[top--]; ['DYP-1J
int i=stack[top--]; >goG\y
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pivotIndex=(i+j)/2; P:k!dRb9{
pivot=data[pivotIndex]; 5.U4P<