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。 tm;\m!^X{
插入排序: ]_>38f7h
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package org.rut.util.algorithm.support; ;{m;CKHI
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import org.rut.util.algorithm.SortUtil; MO]zf3f!
/** e{:
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* @author treeroot |r*y63\T
* @since 2006-2-2 $7-4pW$y
* @version 1.0 Ow0~sFz
*/ T+V:vuK
public class InsertSort implements SortUtil.Sort{ D<Z\6)|%I
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/* (non-Javadoc) 0l(G7Ju
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sI)jqHZG
*/ Qz"@<qgQy
public void sort(int[] data) { zPvTRW~H\
int temp;
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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); 0s4]eEXH
} b^Do[o}5
} DUf. F
} %)}_OXWf:
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} ^]LWcJ?"^!
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冒泡排序: 'pAq;2AA
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package org.rut.util.algorithm.support; k%RQf0`T
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import org.rut.util.algorithm.SortUtil; ?AQR\) P
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/** i .?l\
* @author treeroot J<L"D/
* @since 2006-2-2 uN&49o
* @version 1.0 `)jAdad-s
*/ m]++
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public class BubbleSort implements SortUtil.Sort{ cMUmJH
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/* (non-Javadoc) #1>c)_H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?cr^.LV|h^
*/ U,9=&"e b
public void sort(int[] data) { uoY]@.
int temp; Nrp1`qY
for(int i=0;i for(int j=data.length-1;j>i;j--){ P= 26! b
if(data[j] SortUtil.swap(data,j,j-1); 6r5<uZ9w_X
} &-.2P!t
} !"^//2N+,
} 9(9\kQj{C
} 7baQ4QY?n
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} &W y9%
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选择排序: l;J B;0<s"
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package org.rut.util.algorithm.support; 3}?]G8iL?L
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import org.rut.util.algorithm.SortUtil; C'z}jM`g
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/** ,3ivB8
* @author treeroot pu+jw<7
* @since 2006-2-2 vB/G#\Zqz
* @version 1.0 \R#OJ=F
*/
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public class SelectionSort implements SortUtil.Sort { !vSj1w
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/* "\Nn,3qp
* (non-Javadoc) G
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* NHzhGg]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IsiCHtY9
*/ X[iQ%Y$/n
public void sort(int[] data) { Rp""&0
int temp; ~d6zpQf7>
for (int i = 0; i < data.length; i++) { y[:xGf]8@
int lowIndex = i; #ruL+-8!<
for (int j = data.length - 1; j > i; j--) { +,ZQ(
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if (data[j] < data[lowIndex]) { z)y{(gR
lowIndex = j; (ft$ R?
} [,ns/*f3R
} w>gB&59r
SortUtil.swap(data,i,lowIndex); ~@Eu4ip)F
} f>_' ]eM%
} Y]{~ogsn$:
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} 4] I7t
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Shell排序: ],ISWb
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package org.rut.util.algorithm.support; T|Fl$is
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import org.rut.util.algorithm.SortUtil; 0h~7"qUF@
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/** r(cd?sL96R
* @author treeroot n[`FoY
* @since 2006-2-2 /q >1X!Z
* @version 1.0 .qk_m-o
*/ OuF%!~V
public class ShellSort implements SortUtil.Sort{ TW}nO|qw
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/* (non-Javadoc) 3rw<#t;v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :HQQ8uQfb
*/ OB5`a,5dI
public void sort(int[] data) { >hmBV7nR
for(int i=data.length/2;i>2;i/=2){ r5g:#mF"
for(int j=0;j insertSort(data,j,i); +>S\.h
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} wLz@u$u?
} &C=[D_h
insertSort(data,0,1); ^8eu+E.{
} [kyIF\0
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/** j LG
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* @param data 8!(09gW'>
* @param j VsM~$
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* @param i JQ)w/@Vu=
*/ ;4ETqi9
private void insertSort(int[] data, int start, int inc) { m<uBRI*I
int temp; I7q}<"`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tjTnFP/=
} pw5uH
} Dm0Ts~
} +:?"P<'
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} )4BLm
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快速排序: ii:E>O(0B
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package org.rut.util.algorithm.support; #?EmC]N7
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import org.rut.util.algorithm.SortUtil; CDU$Gi
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/** w5uOkz #
* @author treeroot 2Ub!wee
* @since 2006-2-2 dGY:?mf&
* @version 1.0 !O}^ Y
*/ a08`h.dyN
public class QuickSort implements SortUtil.Sort{ /I/gbmc)
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/* (non-Javadoc) Z0I>PBL@l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hFp\,QSx
*/ .P^&sl*J
public void sort(int[] data) { sw^4h`^'
quickSort(data,0,data.length-1); 9#X"m,SB
} 7I`8r2H
private void quickSort(int[] data,int i,int j){ Yy3g7!K5E
int pivotIndex=(i+j)/2; 78fFAN`
file://swap \&Zp/;n
SortUtil.swap(data,pivotIndex,j); --chU5
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int k=partition(data,i-1,j,data[j]); T>2_ r6;
SortUtil.swap(data,k,j); #%$U-ti
if((k-i)>1) quickSort(data,i,k-1); kI|7o>}<
if((j-k)>1) quickSort(data,k+1,j); M4`.[P4
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} r?j2%M\
/** EYD24
* @param data &K.js
* @param i yrVk$k#6}
* @param j vQ",rP%
* @return U8gf_R'
*/ A5[iFT>
private int partition(int[] data, int l, int r,int pivot) { M\rZr3
do{ rCp'O\@S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]5Mq^@mD'
SortUtil.swap(data,l,r); F2:nL`]b[
} JRYCM}C]
while(l SortUtil.swap(data,l,r); Yfd0Np~
return l; #Li6RSeW
} M!)~h<YL
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} a*(,ydF|L
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改进后的快速排序: 8%EauwAx
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package org.rut.util.algorithm.support; xg8$ <Ut
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import org.rut.util.algorithm.SortUtil; cWS 0B $$
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/** EYXHxo
* @author treeroot Yw_^]:~
* @since 2006-2-2 ^Ez`WP
* @version 1.0 !/RL.`!>
*/ QopA'm
public class ImprovedQuickSort implements SortUtil.Sort { ')#!M\1,HQ
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private static int MAX_STACK_SIZE=4096; nc/F@HCB
private static int THRESHOLD=10; =jIP29+
/* (non-Javadoc) eOU v#F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?/AIL]_
*/ AREpZ2GiU
public void sort(int[] data) { fx3oA}
int[] stack=new int[MAX_STACK_SIZE]; 3 =-XA2zJ
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int top=-1; &\>. j|
int pivot; RoYwZX~
int pivotIndex,l,r; rMEM$1vPU
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stack[++top]=0; 3K{G =WE$
stack[++top]=data.length-1; 3EO:Uk5<
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while(top>0){ tx_h1[qi
int j=stack[top--]; w6&p4Jw/H?
int i=stack[top--]; C=,O'U(ep
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pivotIndex=(i+j)/2; oj%(@6L
pivot=data[pivotIndex]; (F=q/lK$
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SortUtil.swap(data,pivotIndex,j); :xy4JRcF
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file://partition mGP&NOR0^y
l=i-1; >\4"k4d}
r=j; R8N*. [
do{ X-k$6}D
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Mp,aQ0bNS
SortUtil.swap(data,l,r); ag{cm'.
} caD)'FSES
while(l SortUtil.swap(data,l,r); bSgdVP-
SortUtil.swap(data,l,j); $*q^7ME
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if((l-i)>THRESHOLD){ }=$>w@mJ
stack[++top]=i; !Y^3% B%
stack[++top]=l-1; Hkzx(yTi
} 88g|(k/
if((j-l)>THRESHOLD){ R?5v//[
stack[++top]=l+1; `/RcE.5n\@
stack[++top]=j; g(QT"O!dY
} ":W$$w<
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} d<_#Q7]I4
file://new InsertSort().sort(data); LVe[N-K
insertSort(data); JxmFUheLt
} 4RL0@)0F
/** |] cFsB#G
* @param data 0'zX6%
*/ 7
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private void insertSort(int[] data) { lOEB ,/P
int temp; *|Bt!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ju"K"
} Lpv,6#m`)
} xua
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} U^
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} aW*8t'm;m'
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归并排序: Ng|c13A=
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package org.rut.util.algorithm.support; 4 zhg#
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import org.rut.util.algorithm.SortUtil; +<rWYF(ii/
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/** Ex-?[Hq
* @author treeroot 1+v!)Y>Z&
* @since 2006-2-2 bwyj[:6l
* @version 1.0 N}CeQ'l[R
*/ uy rS6e0
public class MergeSort implements SortUtil.Sort{ w^E$R
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/* (non-Javadoc) RxO!h8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QE4TvnhK
*/ )QAS 7w#k
public void sort(int[] data) { l|sC\;S
int[] temp=new int[data.length]; 1<F6{?,z
mergeSort(data,temp,0,data.length-1); ypLt6(1j%
} ZW%;"5uVm)
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private void mergeSort(int[] data,int[] temp,int l,int r){ BI6]{ ZC"
int mid=(l+r)/2; "@(Sw>*o
if(l==r) return ; 2g
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mergeSort(data,temp,l,mid); -(JBgM"
mergeSort(data,temp,mid+1,r); g27)$0&0
for(int i=l;i<=r;i++){ Ci$?Hm9 n
temp=data; bsv!z\}
} %`\=qSf*
int i1=l; '#NDR:J"
int i2=mid+1; JmF:8Q3H
for(int cur=l;cur<=r;cur++){ IN?6~O
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if(i1==mid+1) ~nRbb;M
data[cur]=temp[i2++]; i;fU],aK!
else if(i2>r) E~
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data[cur]=temp[i1++]; ub9,Wd"^
else if(temp[i1] data[cur]=temp[i1++]; T;sF@?
else :=?od
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data[cur]=temp[i2++]; 9s&dN
} MeDlsO
} N?v}\ PU
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} tQ,3nI!|xF
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改进后的归并排序: tvcM<
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y`a]##1j$M
package org.rut.util.algorithm.support; mGh8/Xt
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import org.rut.util.algorithm.SortUtil; s[Whg!2~
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/** eOZ"kw"uHu
* @author treeroot _j2q
* @since 2006-2-2 JYrOE"!h
* @version 1.0 ,m[#<}xXA
*/ j7yUya&
public class ImprovedMergeSort implements SortUtil.Sort { Bmv5yc+;
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private static final int THRESHOLD = 10; @ +yjt'B
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/* ( 9(NP_s
* (non-Javadoc) IVso/!
* $fAZ^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?X@uR5?{
*/ k-I U}|Xz
public void sort(int[] data) { \[<8AV"E-'
int[] temp=new int[data.length]; n'83P%x
mergeSort(data,temp,0,data.length-1); h3j`X'
} GP0}I@>?
^_t7{z%sA[
private void mergeSort(int[] data, int[] temp, int l, int r) { jIjW +D`
int i, j, k; +[7 DRT:
int mid = (l + r) / 2; K>_~|ZN1C8
if (l == r) TJUYd9O4[
return; PQXCT|iJ
if ((mid - l) >= THRESHOLD) U*\1d
mergeSort(data, temp, l, mid); Zp+orc7
else 6ag0c&k
insertSort(data, l, mid - l + 1); "10.,QK
if ((r - mid) > THRESHOLD) 'o|=_0-7W
mergeSort(data, temp, mid + 1, r); qPn!.m$/
else _-z;
insertSort(data, mid + 1, r - mid); WO=P~F<