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。 Vf<VKP[9K
插入排序: XG2&_u&
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package org.rut.util.algorithm.support; ^|-*amh
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import org.rut.util.algorithm.SortUtil; UZ#Yd|'PD
/** "e4;xU-
* @author treeroot p(dJf&D
* @since 2006-2-2 *;b.x"
* @version 1.0 _' KJ:3e
*/ /3`#ldb%}
public class InsertSort implements SortUtil.Sort{ FrXFm+8
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/* (non-Javadoc) )*<=:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M| r6"~i
*/ el
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public void sort(int[] data) { U,Py+c6
int temp; Teq1VK3Hr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CFdR4vuEI
} w;@DcX$]
} pd2Lc
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冒泡排序: v[4A_WjT
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package org.rut.util.algorithm.support; |Yq0zc!
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import org.rut.util.algorithm.SortUtil; uLFnuK
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/** A0Z<1|6r*
* @author treeroot &+F|v(|r
* @since 2006-2-2 +|6
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* @version 1.0 F-K=Otj
*/ ;:(kVdb
public class BubbleSort implements SortUtil.Sort{ my+y<C-o`
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/* (non-Javadoc) Bc1[^{`bq^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i$MYR @
*/ \GA6;6%Oo
public void sort(int[] data) { s%Ez/or(T
int temp; JBX#U@k>I
for(int i=0;i for(int j=data.length-1;j>i;j--){ {|)u).n|
if(data[j] SortUtil.swap(data,j,j-1); }py6H[
} [X>\!mt
} $@]tTz;b
} _m3}0q
} :9`'R0=i^
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} +bC-_xGuh
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选择排序: yVds2J'w-
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package org.rut.util.algorithm.support; g-B~"tp
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import org.rut.util.algorithm.SortUtil; c6zghP3dR
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/** ERSo&8
* @author treeroot s-^B)0T!
* @since 2006-2-2 0Vu&UD
* @version 1.0 2de[ yz
*/ 3a#X:?
public class SelectionSort implements SortUtil.Sort { fwvPh&U&
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/* }~gBnq_DDU
* (non-Javadoc) S0X%IG
* E+XpgR5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8)I,WWj
*/ rKZ1
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public void sort(int[] data) { Bl,rvk2
int temp; Twscc"mK
for (int i = 0; i < data.length; i++) { c*0pF=3
int lowIndex = i; `dB!Ia|
for (int j = data.length - 1; j > i; j--) { 96W!~w2xx
if (data[j] < data[lowIndex]) { xDRNt Lj<u
lowIndex = j; ;Y:_}kN8_
} cW+6Emh
} ZM)Y Rdh
SortUtil.swap(data,i,lowIndex); jpND"`Q
} J
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} V=#L@ws
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} \;"$Z9W
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Shell排序: i1ph{;C
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package org.rut.util.algorithm.support; F_8<
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import org.rut.util.algorithm.SortUtil; +(>!nsf
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/** ;Dl< GW3<
* @author treeroot "T>74bj_|Q
* @since 2006-2-2 K@ZK@++
* @version 1.0 "BN-Jvb7q
*/ x,kZ>^]&b
public class ShellSort implements SortUtil.Sort{ Z<j(ZVO
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/* (non-Javadoc) <28L\pdG`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o+U]=q*|)$
*/ [3Qu @;"&
public void sort(int[] data) { ts2;?`~
for(int i=data.length/2;i>2;i/=2){ BIx Z4Ft
for(int j=0;j insertSort(data,j,i); eURy]
} Qg
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} \Qa6mt2h
insertSort(data,0,1); d,"?tip/SX
} .gmNE$d
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/** 7nh,j <~;2
* @param data D@[Mk"f
* @param j ;d"F'd
* @param i ]?<j]u0J
*/ {~=Edf
private void insertSort(int[] data, int start, int inc) { ,TuDG*YA
int temp; [K2\e N~g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !L3M\Q0
} 76i)m!
} 'B;aXy/JC
}
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} R#ayN*
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快速排序:
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package org.rut.util.algorithm.support; l V[d`%(
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import org.rut.util.algorithm.SortUtil; AF5$U8jf
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/** )wU.|9o]M
* @author treeroot vfG4PJ 6
* @since 2006-2-2 3JuWG\r)l
* @version 1.0 $ t' .
*/ <I.anIB:U
public class QuickSort implements SortUtil.Sort{ ,Y~{RgG
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/* (non-Javadoc) )+]8T6~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <{rRcFR
*/ *2O4 *Q1
public void sort(int[] data) { pDr%uL
quickSort(data,0,data.length-1); /]=dPb%
} G([8Q8B4+
private void quickSort(int[] data,int i,int j){ ,#G>&
int pivotIndex=(i+j)/2; vywd&7gK
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SortUtil.swap(data,pivotIndex,j); i~\fpay
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int k=partition(data,i-1,j,data[j]); $~UQKv>
SortUtil.swap(data,k,j); e(/~;"r{
if((k-i)>1) quickSort(data,i,k-1); |*079v
if((j-k)>1) quickSort(data,k+1,j); i_OoR"J%
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} b-e3i;T!}~
/** 0RY{y n3
* @param data Skgvnmk[U
* @param i b#p)bcz!I
* @param j (fON\)l
* @return +RexQE
*/ nenYP0
private int partition(int[] data, int l, int r,int pivot) { #W#GI"K
do{ \tFg10
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fu|N{$h%X
SortUtil.swap(data,l,r); h4CDZ
} 0raVC=[
while(l SortUtil.swap(data,l,r); ,<$6-3sC-
return l; Vx_lI
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} EL+6u>\-k
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} u9>zC QRO
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改进后的快速排序: =G9%Hz5~:
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package org.rut.util.algorithm.support; '$u3i
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import org.rut.util.algorithm.SortUtil; dj*%^cI
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/** j:D@X=|
* @author treeroot zAEq)9Y"l'
* @since 2006-2-2 Q!/<=95E
* @version 1.0 Ws?BAfP
*/ z'a#lA.$}
public class ImprovedQuickSort implements SortUtil.Sort { G)\s{qk
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private static int MAX_STACK_SIZE=4096; ?(GMe>
private static int THRESHOLD=10; WT Pp/Nq'
/* (non-Javadoc) UJG)-x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pxu!,Mi[d
*/ Z;shFMu
public void sort(int[] data) { 7|3Qcn7P)@
int[] stack=new int[MAX_STACK_SIZE]; wsp&U
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int top=-1; p
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int pivot; IdTeue
int pivotIndex,l,r; }J .f
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stack[++top]=0; nd
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stack[++top]=data.length-1; U#G[#sd> K
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while(top>0){ j"o`K}C
int j=stack[top--]; J 2%^%5&0
int i=stack[top--]; |M|'S~z
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pivotIndex=(i+j)/2; mfOr+
pivot=data[pivotIndex]; q[{q3-W
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SortUtil.swap(data,pivotIndex,j); Be+'&+
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file://partition B]dHMLzl
l=i-1;
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r=j; "UVqkw,vt
do{ DQW^;Ls
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6Uq@v8mh
SortUtil.swap(data,l,r); VKy:e.
} B`OggdE
while(l SortUtil.swap(data,l,r); 9Ue3
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SortUtil.swap(data,l,j); {snLiCl
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if((l-i)>THRESHOLD){ f XxdOn.
stack[++top]=i; sKIWr{D
stack[++top]=l-1; j>~^jz:
} uy\<t
if((j-l)>THRESHOLD){ Z!=/[,b
stack[++top]=l+1; P\;lH"9
stack[++top]=j; M= !Fb
} Mt)~:V+:
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} #(3w6l2
file://new InsertSort().sort(data); &
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insertSort(data); \~:Kp
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} 3:jKuOX
/** z<c^<hE:l
* @param data %Rv&VFg
*/ BDZB;DPb
private void insertSort(int[] data) { y
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int temp; W>eJGZ<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b_-ESs]g
} ju8tNL,J
} # 'G/&&<
} ug[|'tR8
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} N kp>yVj
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归并排序: $s.:wc^
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package org.rut.util.algorithm.support; o%h"gbvMY!
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import org.rut.util.algorithm.SortUtil; cv;&ff2%?
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/** iaXNf
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* @author treeroot P{5p'g ,
* @since 2006-2-2 le yhiL<
* @version 1.0 CJg &
*/ }MY7<sMDOy
public class MergeSort implements SortUtil.Sort{ #T
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/* (non-Javadoc) 4q[C'
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E+V^5Z:u
*/ rklr^ e
public void sort(int[] data) { uSbOGhP
int[] temp=new int[data.length]; 9Am&G
mergeSort(data,temp,0,data.length-1); w/KHS#~
} 1g9Qvz3
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private void mergeSort(int[] data,int[] temp,int l,int r){ <ro0}%-z>M
int mid=(l+r)/2; qc~6F'?R
if(l==r) return ; 3v;o`Em&
mergeSort(data,temp,l,mid); ??12
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mergeSort(data,temp,mid+1,r); ~\4l*$3(^
for(int i=l;i<=r;i++){ zkn K2e,$
temp=data; AuUT 'E@E
} w_pEup\`
int i1=l; m9ts&b+TE
int i2=mid+1; F6h3M~uR
for(int cur=l;cur<=r;cur++){ *c7kB}/
if(i1==mid+1) %]nYv#K
data[cur]=temp[i2++]; @=`Dw/13
else if(i2>r) ,0NVb7F;k
data[cur]=temp[i1++]; z*ZEw
else if(temp[i1] data[cur]=temp[i1++]; 2\l7=9 ]\3
else pl
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data[cur]=temp[i2++]; [VIdw92
} <