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。 OWewV@VXR
插入排序: &'>m;W
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package org.rut.util.algorithm.support; jvB[bS`<H
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import org.rut.util.algorithm.SortUtil; .m]}Ba}J$
/** pZ>yBY?R8>
* @author treeroot 1jd{AqHl
* @since 2006-2-2 VH]}{i"`
* @version 1.0 yIKpyyC9H
*/ _!o8s%9be
public class InsertSort implements SortUtil.Sort{ $!*>5".A
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/* (non-Javadoc) @KL&vm(F$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^gTID
*/ BjfVNF;hk:
public void sort(int[] data) { 1@p,
int temp; $b|LZE\bU.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); + kMj|()>\
} :u,.(INB
} D:Q#%wJ
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冒泡排序: rByth,|
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package org.rut.util.algorithm.support; JhFn"(O
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import org.rut.util.algorithm.SortUtil; '*y(F*7+
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/** T MMKRC1<
* @author treeroot !=:>y WQ
* @since 2006-2-2 \B4H0f
* @version 1.0 id:,\iJ
*/ yo#r^iAr
public class BubbleSort implements SortUtil.Sort{ ] x)>q
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/* (non-Javadoc) ndLEIqOY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,RR{Y-
*/ A6=Z2i0w>X
public void sort(int[] data) { |,,#DSe
int temp; gttsxOgktH
for(int i=0;i for(int j=data.length-1;j>i;j--){ our
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if(data[j] SortUtil.swap(data,j,j-1); yDqwz[v b
} iKaX8c,zI
} 8s6[-F5
} "?zWCH
} zj r($?
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选择排序: )<V!lsUx'-
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package org.rut.util.algorithm.support; mj'~-$5T
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import org.rut.util.algorithm.SortUtil; /= ;,lC
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/** PFX,X
* @author treeroot oUnb-,8n
* @since 2006-2-2 9$$ Ijf
* @version 1.0 F)cCaE;
*/
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public class SelectionSort implements SortUtil.Sort { i$] :Y`3h
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/* )L9eLxI
* (non-Javadoc) clU ?bF~e1
* E'\gd7t ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t[q2W"#.
*/ y7UU'k`
public void sort(int[] data) { xH2'PEjFM
int temp; r7W.}n*
for (int i = 0; i < data.length; i++) { R7Qj<,
int lowIndex = i; ~}b0zL
for (int j = data.length - 1; j > i; j--) { n3$=&
if (data[j] < data[lowIndex]) { F\N0<o
lowIndex = j; ]z'L1vQl7
} :Ob4WU
} o?}dHTk7
SortUtil.swap(data,i,lowIndex); t,%m-dU
} c-hc.i}!
} AVjRhe
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} MPUyu(-%{
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Shell排序: !LH;K
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package org.rut.util.algorithm.support; /4Wf\
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import org.rut.util.algorithm.SortUtil; Xi"9y @
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/** cV>?*9z0
* @author treeroot p|-> z
* @since 2006-2-2 6kp)'wz`
* @version 1.0 A~Sc ] M
*/ (DvPdOT+3
public class ShellSort implements SortUtil.Sort{ WILa8"M
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/* (non-Javadoc) |I1,9ex
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kKF=%J?X
*/ /b
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public void sort(int[] data) { kI`HD
for(int i=data.length/2;i>2;i/=2){ I7Kgi3
for(int j=0;j insertSort(data,j,i); 0z \KI?kd
}
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} 0Lj;t/mG
insertSort(data,0,1); 9)+!*(D
} @VP/kut
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/** fZf>>mu@r'
* @param data H%m^8yW1
* @param j X$==J St
* @param i {P?Ge
*/ VJ-t#q"
private void insertSort(int[] data, int start, int inc) { Po=:-Of:
int temp; <9>L^GgXA
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xytWE:=
} H9jlp.F
} L$c 1<7LU
} 5(#z)T
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} ]uhG&:
}
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快速排序: GjEV]hqR
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package org.rut.util.algorithm.support; aT2%Az@j
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import org.rut.util.algorithm.SortUtil; ?W ^`Fa)]o
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/** 'exR;q\
* @author treeroot < k(n%
* @since 2006-2-2 8ZV!ld
* @version 1.0 K
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*/ VB/75xK_
public class QuickSort implements SortUtil.Sort{ =UO7!vr;[
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/* (non-Javadoc) I|*<[/)]y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z]LP18m9kl
*/ /b{@']
public void sort(int[] data) { #pRbRT9
quickSort(data,0,data.length-1); ~Fvz&dO
} 3U?gw!M>
private void quickSort(int[] data,int i,int j){ W!el[@
int pivotIndex=(i+j)/2; G:+D1J]
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SortUtil.swap(data,pivotIndex,j); vB7]L9=@"
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int k=partition(data,i-1,j,data[j]); 6@0?~
SortUtil.swap(data,k,j); "?aE3$/
if((k-i)>1) quickSort(data,i,k-1); W{JR%Sq$
if((j-k)>1) quickSort(data,k+1,j); |LIcq0Z
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} nUq@`G
/** 1 h(n}u
* @param data ;(E]mbV'=
* @param i 1|
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* @param j D {E,XOi
* @return 0RdW.rZJ
*/ hT=E~|O
private int partition(int[] data, int l, int r,int pivot) { @?tR-L<u
do{ (Z@-e^R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4%v-)HGh
SortUtil.swap(data,l,r); P<1&kUZL
} 4Vj]bm
while(l SortUtil.swap(data,l,r); A5fzyG
return l; Kk.\P|k2
} I&8!V)r)
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} "JF
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改进后的快速排序: 'u PI~l`g
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package org.rut.util.algorithm.support; iU{\a,
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import org.rut.util.algorithm.SortUtil; :`yW^b
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/** !+hw8@A
* @author treeroot /$qB&OWJn
* @since 2006-2-2 0^P9)<k'
* @version 1.0 A@.ruG$
*/ ?)qm=mebY
public class ImprovedQuickSort implements SortUtil.Sort { 0a?[@ -Sz
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private static int MAX_STACK_SIZE=4096; z5^Se!`5
private static int THRESHOLD=10; a#Z#-y!
/* (non-Javadoc) \ 511?ik
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k fOd|-
*/ l
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public void sort(int[] data) { +^,&z}(
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int[] stack=new int[MAX_STACK_SIZE]; }i;!p
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int top=-1; 'Um\m
int pivot; <ihJp^kgQ
int pivotIndex,l,r; BW`Tw^j
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stack[++top]=0; Fvv/#V^R
stack[++top]=data.length-1; I*+*Wf
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while(top>0){ jfR!M07|
int j=stack[top--]; (=53WbOh/t
int i=stack[top--]; cpq0'x\
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pivotIndex=(i+j)/2; oe_,q&e
pivot=data[pivotIndex]; NUY sQO)
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SortUtil.swap(data,pivotIndex,j); A{hST~s
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file://partition _rUsb4r
l=i-1; "y .(E7 6
r=j; #=fd8}9
do{ 7&dPrnQX=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "aGpC{
SortUtil.swap(data,l,r); h_t<Jl
} o[G,~f\-
while(l SortUtil.swap(data,l,r); P-N+
SortUtil.swap(data,l,j); U,2\ TBz
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if((l-i)>THRESHOLD){ F>q%~
stack[++top]=i; B&lF!
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stack[++top]=l-1; }PzYt~Z`@
} =H^^A G\}
if((j-l)>THRESHOLD){ mhnK{M @56
stack[++top]=l+1; BjUz"69
stack[++top]=j; 5r\Rfma
} \xtmd[7lb<
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} u $T'#p1
file://new InsertSort().sort(data); /#4BUfY
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insertSort(data); A.S:eQvS%
} q1M16qv5
/** CY8=prC
* @param data HuL9' M
*/ L5>.ku=T
private void insertSort(int[] data) { gY@$g
int temp; KA{Y*m^7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \tg}K0E?R5
} ^p7Er!
} e,0Gc-X[B
} dzc.s8T(0
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} b"#|0d0
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归并排序: W-U[7n
H!{Cr#=
package org.rut.util.algorithm.support; L
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import org.rut.util.algorithm.SortUtil; GfT`>M?QGK
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/** !Zf)N_k
* @author treeroot ,ffH:3F
* @since 2006-2-2 KbF,jm5
* @version 1.0 d\aU rsPn
*/ !xh.S#B
public class MergeSort implements SortUtil.Sort{ V,Br|r$l(
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/* (non-Javadoc) GCPSe A~cx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HveOG$pT
*/ DJhCe==$v
public void sort(int[] data) { Mi"dFx^Md
int[] temp=new int[data.length]; '=vD!6=0@
mergeSort(data,temp,0,data.length-1); CVBy&o"6A
} s5ddGiZnBT
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private void mergeSort(int[] data,int[] temp,int l,int r){ $nbZ+~49
int mid=(l+r)/2; :<Y, f(c
if(l==r) return ; w873: =
mergeSort(data,temp,l,mid); s4c2
mergeSort(data,temp,mid+1,r); _[.3I1kG
for(int i=l;i<=r;i++){ [Y]\sF;J
temp=data; y"SVZ} ;|
} h"G#} C]
int i1=l; u($y<Q)=
int i2=mid+1; hpJi,4r.d
for(int cur=l;cur<=r;cur++){ YTpO4bX
if(i1==mid+1) R nf$
data[cur]=temp[i2++]; E7qk>~Dg
else if(i2>r) qTL]
data[cur]=temp[i1++]; miZ&9m
else if(temp[i1] data[cur]=temp[i1++]; &iD