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。 cb\jrbj6
插入排序: #($k 3OA
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package org.rut.util.algorithm.support; 5w]DncdQ~
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import org.rut.util.algorithm.SortUtil; LZgwIMd
/** y>DfM5>
* @author treeroot l~`txe
* @since 2006-2-2 A9NOeE
* @version 1.0 + 8MW$ m$
*/ H(
public class InsertSort implements SortUtil.Sort{ =1%zI%
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/* (non-Javadoc) EGp~Vo-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WZfk}To1#
*/ nXx6L!H J#
public void sort(int[] data) { p~,a=
int temp; |#Yu.c*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eD>-`'7<
} } S'I
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冒泡排序: 0X] ekq
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package org.rut.util.algorithm.support; 4d{"S02h
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import org.rut.util.algorithm.SortUtil; F{a0X0ru~
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/** @d8&3@{R^
* @author treeroot :F!dTD$
* @since 2006-2-2 EM>c%BH<N
* @version 1.0 eONeWY9
*/ BN<#x@m$]
public class BubbleSort implements SortUtil.Sort{ V0SW 5
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/* (non-Javadoc) PCV58n3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8GF[)z&|P:
*/ -s?dzX
public void sort(int[] data) { pIU#c&%<9
int temp; Zztt)/6*
for(int i=0;i for(int j=data.length-1;j>i;j--){ pq/FLYiv
if(data[j] SortUtil.swap(data,j,j-1); _qO;{%r
} orcZyYU
} qaCi)f!Dl
} rR),~ @]sL
} ?{ 8sT-Z-L
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} 0-;DN:>
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选择排序: |k['wqn"
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package org.rut.util.algorithm.support; !Vp,YN+yN
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import org.rut.util.algorithm.SortUtil; Q G=-LXv:@
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/** VOowA^
* @author treeroot !}Woo$#ND
* @since 2006-2-2 *pS7/Qe
* @version 1.0 e"v[)b++Y
*/ 5'{qEZs^QU
public class SelectionSort implements SortUtil.Sort { *_"c!eW
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/* V,|Bzcz
* (non-Javadoc) aOAwezfYR
* 5CRc]Q#@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &2<&X( )
*/ }Uqa8&
public void sort(int[] data) { WacU@L $A
int temp; KL:6P-3
for (int i = 0; i < data.length; i++) { c4qp3B_w
int lowIndex = i; ^J#*n;OQ3A
for (int j = data.length - 1; j > i; j--) { Ht=6P)
if (data[j] < data[lowIndex]) { ?hry=I(7r
lowIndex = j; k^'d@1z;C
} gN!E*@7
} :#Ex3H7
SortUtil.swap(data,i,lowIndex); uV/HNzC
} 2RSHBo
} J^F(]
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} ()3x%3
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Shell排序: xi1N?
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package org.rut.util.algorithm.support; Nak'g/uP>
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import org.rut.util.algorithm.SortUtil; Jegx[*O>b
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/** C9z~)aL}7
* @author treeroot #0YzPMV
* @since 2006-2-2 Ck/_UY|
* @version 1.0 D<D
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*/ nM (=bEX
public class ShellSort implements SortUtil.Sort{ cV=_GE
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/* (non-Javadoc) v,!Y=8~9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s:m<(8WRw
*/ {Y@-*pL]
public void sort(int[] data) { tmY-m,U
for(int i=data.length/2;i>2;i/=2){ .1[2 CjQ
for(int j=0;j insertSort(data,j,i); hk lO:,`
} dPyBY]`
} z7.C\l
insertSort(data,0,1); v{rK_jq
} gQk#l\w_
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/** vElL.<..
* @param data [ilv/V<
* @param j d6d(?"
* @param i 4-}A'fTU8
*/ @L>NN>?SGQ
private void insertSort(int[] data, int start, int inc) { -Y jv&5
int temp; 0@mX4.!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); l~Wk07r3
} yZ(Nv $[5
} yK>0[6l
} q:~`7I
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} +{Vwz
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快速排序: :9rhv{6Wp
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package org.rut.util.algorithm.support; s>M~g,xTU
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import org.rut.util.algorithm.SortUtil; Zm8
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/** lJ>QTZH!wW
* @author treeroot $vbAcWj
* @since 2006-2-2 BqEubP(si
* @version 1.0 <cfH'~
*/ X5oW[
public class QuickSort implements SortUtil.Sort{ X^_+%U
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/* (non-Javadoc) 2Fp]S
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d`],l\oC
*/ _F/lY\vm
public void sort(int[] data) { v YmtpKNj%
quickSort(data,0,data.length-1); aa YQ<
} 8yo6v3JqC
private void quickSort(int[] data,int i,int j){ #u2&8-Gh
int pivotIndex=(i+j)/2; .jGsO0
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SortUtil.swap(data,pivotIndex,j); <}Wy;!L
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int k=partition(data,i-1,j,data[j]); xMfv&q=k@
SortUtil.swap(data,k,j); b=QGbFf
if((k-i)>1) quickSort(data,i,k-1); ";Ig%]
if((j-k)>1) quickSort(data,k+1,j); #ZnX6=;X
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} 3_eml\CY
/** ?o(X0
* @param data b\Xu1>
* @param i uA/.4 b
* @param j *ZSp9g"Z
* @return 7%"\DLA
*/ uSQ>oi]
private int partition(int[] data, int l, int r,int pivot) { :mtw}H 'F8
do{ w KMk|y>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y[5P<:&s
SortUtil.swap(data,l,r); Ccd7|L1
} vyx\N{
while(l SortUtil.swap(data,l,r); -x%`Wv@L
return l; ;
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} ESf7b `tS
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} kcz#8K]~
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改进后的快速排序: Jx
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package org.rut.util.algorithm.support; H{A| ~V)
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import org.rut.util.algorithm.SortUtil; hy&Hl
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/** <%#y^_
* @author treeroot uj1E*
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* @since 2006-2-2 e}4^N1'd/
* @version 1.0 2=,Sz1`t
*/ [oN> :
public class ImprovedQuickSort implements SortUtil.Sort { I7z]%Z
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private static int MAX_STACK_SIZE=4096; 7 KdM>1!
private static int THRESHOLD=10; Q|H cg|
/* (non-Javadoc) ZO0]+Ko
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E+c3KqM
*/ z&vms
public void sort(int[] data) { gsR9M%mv
int[] stack=new int[MAX_STACK_SIZE]; y=qo-v59'
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int top=-1; 5eSTT#[+R
int pivot; &@iF!D\u
int pivotIndex,l,r; @SG="L
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stack[++top]=0; Oi[9b
stack[++top]=data.length-1; irw 7
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