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。 B;zt#H4
插入排序: 42) mM#
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package org.rut.util.algorithm.support; x4?10f(9=
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import org.rut.util.algorithm.SortUtil; {[G`Z9]z&-
/** U5ZX78>a
* @author treeroot &]p}+{ (>
* @since 2006-2-2 8^ep/ b&|
* @version 1.0 EYzg%\HH
*/ eBr4O i
public class InsertSort implements SortUtil.Sort{ 2OBfHO~D
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/* (non-Javadoc) cSD{$B:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;<Qdy`
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*/ fjz) Gp
public void sort(int[] data) { 5>0.NiXGf'
int temp; Un=a
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M].8HwC +
} _2Py\+$
} 2!&pEqs
} 3}Xc71|v
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冒泡排序: :-+4:S
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package org.rut.util.algorithm.support; Y*YFB|f?
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import org.rut.util.algorithm.SortUtil;
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/** m2bDHQ+
* @author treeroot U@lV
* @since 2006-2-2 )/t6" "
* @version 1.0 Cnh|D^{s
*/ }0/a\
public class BubbleSort implements SortUtil.Sort{ D_D,t8_Y
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/* (non-Javadoc) UZxmhsv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]#eh&jw
*/ 5G*II_j
public void sort(int[] data) { %vqT#+x
int temp; G?)vWM`j
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;Rnhe_A.
if(data[j] SortUtil.swap(data,j,j-1); ';YgG<u
} T 1Cs>#)
} $Xf (^K
} f6ZZ}lwaV
} =Viy^ieN$
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选择排序: %$X\"
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package org.rut.util.algorithm.support; szq+@2:
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import org.rut.util.algorithm.SortUtil; 3)E(RyQA3
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/** o0Gx%99'
* @author treeroot "sbBe73 m
* @since 2006-2-2 X#J6Umutm
* @version 1.0 vA>W9OI
*/ L,M+sN
public class SelectionSort implements SortUtil.Sort { [X"k>
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/* (2txM"Dja
* (non-Javadoc) !#}>Hv^N
* fPQ|e"?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RaNeZhF>M
*/ X>3^a'2,E
public void sort(int[] data) { 5'
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int temp; TVkcDS
for (int i = 0; i < data.length; i++) { *\q8BZ
int lowIndex = i; mK\aI
for (int j = data.length - 1; j > i; j--) { SMO*({/
if (data[j] < data[lowIndex]) { *x,HnHT
lowIndex = j; 3M*Y= ?pI
} h6QWH
} %zljH"F
SortUtil.swap(data,i,lowIndex); b(&]>z
} ^, wnp@
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Shell排序: qZsnd7o{l.
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package org.rut.util.algorithm.support; n-OWwev)
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import org.rut.util.algorithm.SortUtil; Bbs 0v6&,
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/** ;&mxqY8`'
* @author treeroot dq1TRFu
* @since 2006-2-2 B$7[8h
* @version 1.0 x]'H jTqX
*/ ZR
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public class ShellSort implements SortUtil.Sort{ J|?[.h7tO
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/* (non-Javadoc) *`.LA@bHU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `,-STIh)
*/ }200g_^
public void sort(int[] data) { DpNX66O
for(int i=data.length/2;i>2;i/=2){ .EzSSU7n)
for(int j=0;j insertSort(data,j,i); I}%mfojC
} c}cG<F
} J/[7d?hI/
insertSort(data,0,1); F*!gzKZ"
} ?o>6S
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/** B[7A
* @param data ck~ '`<7
* @param j NYwGK|
* @param i |rFJ*.nD
*/ 0STk)>3$-
private void insertSort(int[] data, int start, int inc) { N.vG]%1"
int temp; .S(^roM;+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2D_6
} V^WQ6G1
} `|JI\&z
} *V<)p%l.
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} vhX-Qk t}
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快速排序: w4aiI2KFq
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package org.rut.util.algorithm.support; $Uy#/MX
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import org.rut.util.algorithm.SortUtil; 4a1BGNI%SW
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/** U#iT<#!l2
* @author treeroot x6jm-n
* @since 2006-2-2 O/nqNQ?<
* @version 1.0 O2$!'!hz
*/ zQ=aey%
public class QuickSort implements SortUtil.Sort{ ~V!EtZG$
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/* (non-Javadoc) ?'T"?b<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [KD}U-(Wg
*/ LuLy6]6D;
public void sort(int[] data) { Re7{[*Q4
quickSort(data,0,data.length-1); .5Q5\qc=
} :^K~t!@
private void quickSort(int[] data,int i,int j){ >[
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int pivotIndex=(i+j)/2; E8+8{
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SortUtil.swap(data,pivotIndex,j); RLv&,$$0
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int k=partition(data,i-1,j,data[j]); IM$'J
SortUtil.swap(data,k,j); ER/\ +Z#Z
if((k-i)>1) quickSort(data,i,k-1); o:h)~[n|
if((j-k)>1) quickSort(data,k+1,j); O^y$8OKEi,
}`#j;H$i
} imC&pPBB/G
/** -=@K%\\~5
* @param data $4ka +nfU
* @param i H 3W_}f
* @param j $h C~af6
* @return [''=><
*/ A[K:/tB
private int partition(int[] data, int l, int r,int pivot) { ))c*_n
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v\J!yz
SortUtil.swap(data,l,r); .0rJIO
} Kv(Y }
while(l SortUtil.swap(data,l,r); ^Z#<tN;
return l; h]G6~TYI5
} 4KN0i
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} L2:oZ&:u`J
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改进后的快速排序: =iA"; x
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package org.rut.util.algorithm.support; `PXoJl
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import org.rut.util.algorithm.SortUtil; D7 8)4>X
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/** \z(>h&
* @author treeroot RXIH(WiK
* @since 2006-2-2 cj,&&3sbV
* @version 1.0 "Wzij&WkQ
*/ `K1PGibV
public class ImprovedQuickSort implements SortUtil.Sort { Zb5T90s%
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private static int MAX_STACK_SIZE=4096; I_{9eG1w?
private static int THRESHOLD=10; 2nOe^X!*
/* (non-Javadoc) ?#');`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \J#I}-a&j
*/ J~ PTVR
public void sort(int[] data) { n=<q3}1Jej
int[] stack=new int[MAX_STACK_SIZE]; zwF7DnW<<
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int top=-1; Y+S~b
int pivot; SV$ASs
int pivotIndex,l,r; KV3+}k
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stack[++top]=0; {RWahnr{
stack[++top]=data.length-1; ^+.e5roBKj
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while(top>0){ |G5=>W
int j=stack[top--]; dvH67 x
int i=stack[top--]; `K ~>!d_
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pivotIndex=(i+j)/2; V3.vE,
pivot=data[pivotIndex]; \n( 'KVbf
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SortUtil.swap(data,pivotIndex,j); `jl. f
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file://partition !7#froh
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r=j; pRa oR
do{ c9F[pfi(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2T{-J!k
SortUtil.swap(data,l,r); m78MWz]Yo
} .,(uoK{
while(l SortUtil.swap(data,l,r); omDi<-
SortUtil.swap(data,l,j); n$Oky-P"
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if((l-i)>THRESHOLD){ &