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。 K%gP5>y*9>
插入排序: ^.vmF>$+I
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package org.rut.util.algorithm.support; Uo6(|mm
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import org.rut.util.algorithm.SortUtil; 3wC
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/** n3ZAF'
* @author treeroot =Ndli>x}1
* @since 2006-2-2 XdsJwn F
* @version 1.0 9&K/GaG
*/ R#qI(V
public class InsertSort implements SortUtil.Sort{ i8~$o:&HT
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/* (non-Javadoc) q4ipumy*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jPk
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*/ KG8W8&q
public void sort(int[] data) { u9]1X1wV
int temp; L.B~ax.|Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S|K}k:v8
} i- lKdpv
} /IR#A%U
} o| D^`Z
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} ^$Krub{|
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冒泡排序: ;&f1vi4
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package org.rut.util.algorithm.support; 3nFt1E
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import org.rut.util.algorithm.SortUtil; o\6iq
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/** it1/3y
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* @author treeroot v0@)t&O
* @since 2006-2-2 MzTW8
* @version 1.0 !wh&>3~
*/ #a,9B-X
public class BubbleSort implements SortUtil.Sort{ 3~%!m<1:
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/* (non-Javadoc) ;dQAV\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (-"`,8K 2}
*/ ^}>/n. %
public void sort(int[] data) { g1|w? pI1
int temp; `# ^0cW
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0=![fjm
if(data[j] SortUtil.swap(data,j,j-1); ~<ri97)
} %Q4i%:Qi
} m{(+6-8|m
} g7V_[R(6
} I>"Ci(N
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选择排序: '3;v] L?G
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package org.rut.util.algorithm.support; `}8&E(<
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import org.rut.util.algorithm.SortUtil; ~F[L4y!sL
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/** p^X^1X7
* @author treeroot 2`Gv5}LfyR
* @since 2006-2-2 A 's-'8m
* @version 1.0 D}{b;Un
*/ 2\@Z5m3B
public class SelectionSort implements SortUtil.Sort { 6|=j+rScv
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/* , =y#m-9
* (non-Javadoc) x';uCKWV
* YfDWM7x7,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ly #_?\bn
*/ 7"Mk+'
public void sort(int[] data) { 2@Lbfo A
int temp; 2wlKBSON
for (int i = 0; i < data.length; i++) { id,NONb\
int lowIndex = i; 4JMiyiW&
for (int j = data.length - 1; j > i; j--) { =G${[V\
if (data[j] < data[lowIndex]) { \b8\Ug~t
lowIndex = j; j43$]'-
} %SA!p;
} ,=PKd&
SortUtil.swap(data,i,lowIndex); |b.z*G
} a.kbov(
} Pe ~c
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} q=5l4|1
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Shell排序: H^AE|U*-G
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package org.rut.util.algorithm.support; !1Y&Y@ze
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import org.rut.util.algorithm.SortUtil; 8]"(!i_;)
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/** @,OT/egF4:
* @author treeroot QMp rv*i
* @since 2006-2-2 (q;bg1\UK
* @version 1.0 ?6N3tk-2
*/ r o\1]`6
public class ShellSort implements SortUtil.Sort{ M\2"gT-LV
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/* (non-Javadoc) p{tK_ZBy]c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %J7UP4
*/ iEHh{H(
public void sort(int[] data) { (K{5fC
for(int i=data.length/2;i>2;i/=2){ R.RSQk7;
for(int j=0;j insertSort(data,j,i); B!S 167Op
} mY-hN|
} {6,|IGAq
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insertSort(data,0,1); :0~QRc-u
} 1=)r@X/6d
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/** ,T5u'";
* @param data %,V
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* @param j dQ:cYNm
* @param i fg*@<'
*/ 2YBIWR8z
private void insertSort(int[] data, int start, int inc) { >FF5x#^&c
int temp; !!,0'c
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S\x=&R z
} 5>_5]t
{
} #/-_1H
} K 1#ji*Tp
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} 2KJ1V+g@a6
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快速排序: 1= VJ&D;
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package org.rut.util.algorithm.support; '+y_\
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import org.rut.util.algorithm.SortUtil; "M
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/** x~DLW1I
* @author treeroot Hh[Tw&J4
* @since 2006-2-2 fb]S-z (
* @version 1.0 a:rX9-**
*/ {3\R|tZh,`
public class QuickSort implements SortUtil.Sort{ ?3KR(6D
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/* (non-Javadoc) 519:yt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D+@/x{wX2
*/ ;^*+:e
public void sort(int[] data) { b*F :l#
quickSort(data,0,data.length-1); MSrY*)n!>O
} bl+@}+A
private void quickSort(int[] data,int i,int j){ /^es0$Co.
int pivotIndex=(i+j)/2; 8 MACbLY
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SortUtil.swap(data,pivotIndex,j); ~*Sbn~U
2 |kH%
int k=partition(data,i-1,j,data[j]); X?k V1
SortUtil.swap(data,k,j); 1Ag ;s
if((k-i)>1) quickSort(data,i,k-1); J,77pf!B
if((j-k)>1) quickSort(data,k+1,j); H--*[3".
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} p'w"V6k('~
/** .]sIoB-54
* @param data 7AFS)_w
* @param i uJ!s%s2g
* @param j >cr_^(UW&
* @return =='{[[J
*/ i2%m}S;D9
private int partition(int[] data, int l, int r,int pivot) { q MT.7n:
do{ F~rYjAFTi
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y:6'&`L
SortUtil.swap(data,l,r); g:3'x/a1
} r)@&2b"q
while(l SortUtil.swap(data,l,r); UC
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return l; 3K20f8g
} }.|5S+J?[
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} 7[.Q.3FL
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改进后的快速排序: a]=vq(N'r
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package org.rut.util.algorithm.support; E["t Ccg
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import org.rut.util.algorithm.SortUtil; pZJQKTCG
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/** t~W4o8<w
* @author treeroot "M#`y!__
* @since 2006-2-2 }GNH)-AG)$
* @version 1.0 <GmrKdM
*/ xW;[}t-QS
public class ImprovedQuickSort implements SortUtil.Sort { >@89k^#Vc
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private static int MAX_STACK_SIZE=4096; yc4f\0B/
private static int THRESHOLD=10; DW%K'+@M
/* (non-Javadoc) BG? 2PO{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ui~n:aWJ
*/ \V-
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public void sort(int[] data) { JOne&{h]J"
int[] stack=new int[MAX_STACK_SIZE]; b|@op>UZ
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int top=-1; ]fS~N9B
int pivot; E=~WQ13Q
int pivotIndex,l,r; <mgTWv
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stack[++top]=0; LmdV@gR
stack[++top]=data.length-1; e6xjlaKb
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while(top>0){ 5*za]
int j=stack[top--]; J0mCWtx&
int i=stack[top--]; !4cdP2^P
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pivotIndex=(i+j)/2; r9'H7J
pivot=data[pivotIndex]; n
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SortUtil.swap(data,pivotIndex,j); ^M5uLm-_s
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file://partition I2!HXMrp
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r=j; ouZ9oy(}a
do{ {#Cm> @')
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S2SQ;s-t_
SortUtil.swap(data,l,r); {v/6|
} rX}==`#\
while(l SortUtil.swap(data,l,r); (uz!:dkvx
SortUtil.swap(data,l,j); 6T_c#G5
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if((l-i)>THRESHOLD){ dg8\(G
stack[++top]=i; 1/J*ki+?
stack[++top]=l-1; . L%@/(r
} ToM*tXj
if((j-l)>THRESHOLD){ D];([:+4
stack[++top]=l+1; Ap9wH[H
stack[++top]=j; :e vc
} )
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} HjR<4;2
file://new InsertSort().sort(data); Hf|:A(vCx
insertSort(data); l6Bd<tSH
} >;?97'M
/** D8XXm lo
* @param data +q%goG8
*/ vLS6Gb't
private void insertSort(int[] data) { 7J/3O[2
int temp; aX:$Q
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "ET"dMxU
} X[6z
} .p_$]
} 1!#ZEI C
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} /% 1lJD
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归并排序: Jq)k?WS
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package org.rut.util.algorithm.support; TUr}p aw_
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import org.rut.util.algorithm.SortUtil; |05LHwb>
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/** zZQoY_UI
* @author treeroot XwMC/]lK<
* @since 2006-2-2 HR
* @version 1.0 yD"sYT
*/ D%v yO_k
public class MergeSort implements SortUtil.Sort{ Mt>DAk
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/* (non-Javadoc) kEh# 0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !5-[kG&
*/ uv!/DX#
public void sort(int[] data) { P2kZi=0
int[] temp=new int[data.length]; lvlH5Fc
mergeSort(data,temp,0,data.length-1); P@#6.Bb#V
} 3-D!Z S&
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private void mergeSort(int[] data,int[] temp,int l,int r){ H Vy^^$
int mid=(l+r)/2; hAdEq$
if(l==r) return ; I
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mergeSort(data,temp,l,mid); l{4\Wn Va
mergeSort(data,temp,mid+1,r); 4=Zlsp
for(int i=l;i<=r;i++){ *?S\0a'W@
temp=data; Yu=^`I
} 03PVbDq-
int i1=l; yLP0w^Q
int i2=mid+1; "M
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for(int cur=l;cur<=r;cur++){ gE&f}M-
if(i1==mid+1) `}bUf epMJ
data[cur]=temp[i2++]; c/u;v69r
else if(i2>r) f
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data[cur]=temp[i1++]; iX28+weH
else if(temp[i1] data[cur]=temp[i1++]; C+Z"0\{o
else q%"nk
data[cur]=temp[i2++]; m`|Z1CT
} U7W ct %
} +2?[=g4;}
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} =cQwR:):
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改进后的归并排序: d3\8BKp
:X#(T-!t
package org.rut.util.algorithm.support; "~ /3
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import org.rut.util.algorithm.SortUtil; Um~jp:6p
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/**
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* @author treeroot xqr`T0!&
* @since 2006-2-2 h,\^Sb5AP
* @version 1.0 t&ztY]
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*/ 6Bo~7gnc
public class ImprovedMergeSort implements SortUtil.Sort { ]9]3=;b>
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private static final int THRESHOLD = 10; J<H$B +;qR
9 %,_G.
/* I`5F&8J{
* (non-Javadoc) L>).o%(R
* mRW(]OFIai
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4O[5,
*/ FJ!N)`[
public void sort(int[] data) { /ZvNgaH5M
int[] temp=new int[data.length]; oB&s