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。 MA1y@
插入排序: 4s@oj
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package org.rut.util.algorithm.support; #1)#W6 h\
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import org.rut.util.algorithm.SortUtil; V=d~}PJ>
/** `G'Z,P-a
* @author treeroot @@W-]SR
* @since 2006-2-2 SX)o0v+
* @version 1.0 =D3K})&
*/ B;64(Vsa8
public class InsertSort implements SortUtil.Sort{ 2}uSrA7n]
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/* (non-Javadoc) \x=j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bo+Yu(|cL
*/ Je*hyi7
public void sort(int[] data) { _uL8TC^
int temp; ^ *1hz<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0/5{v6_rG
} (jI _Dk;
} {Gvv^.H7
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冒泡排序: ~ugyUpY"
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package org.rut.util.algorithm.support; /Ue_1Efa
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import org.rut.util.algorithm.SortUtil; &gdhq~4#
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/** ubs>(\`q"
* @author treeroot M@]@1Q.p
* @since 2006-2-2 #z#`EBXV$6
* @version 1.0 ?s5/
*/ .+A2\F.^
public class BubbleSort implements SortUtil.Sort{ d3;Sy`.
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/* (non-Javadoc) s 9n_s=w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F\2<q$Zn+
*/ jZgCDA8Mr!
public void sort(int[] data) { exxH0^
int temp; F-=Xbyr3@
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ake$M^Bz
if(data[j] SortUtil.swap(data,j,j-1); Yln[ZmK9g
} G'T:l("l
} jaL#
} :h8-y&;
} Gp0yRT.
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选择排序: 888"X3.T
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package org.rut.util.algorithm.support; /_mU%fl
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import org.rut.util.algorithm.SortUtil; $O^"OQ_@
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/** 6KE?@3;Om
* @author treeroot gxc8O).5vY
* @since 2006-2-2 "ph[)/u;
* @version 1.0 Ksf f]##H
*/ rqTsKrLe
public class SelectionSort implements SortUtil.Sort { u=
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/* n{"e8vQx
* (non-Javadoc) | Zj=E$
* ipD/dx.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a8 .x=j<
*/ ~COd(,ul
public void sort(int[] data) { >Yx,%a@~R
int temp; !bBx'
for (int i = 0; i < data.length; i++) { mvu$
int lowIndex = i; y4%[^g~-
for (int j = data.length - 1; j > i; j--) { ,56objaE
if (data[j] < data[lowIndex]) { `Y,<[ Lnr
lowIndex = j; 6&KcO:}-
} /Jc54d
} )@_5}8
SortUtil.swap(data,i,lowIndex); cuQAXqXC@
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Shell排序: YSru5Q
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package org.rut.util.algorithm.support; B*otquz
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import org.rut.util.algorithm.SortUtil; P"a9+ti+'
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/** q|QkJr<
* @author treeroot J3y4D}
* @since 2006-2-2 {YIf rM
* @version 1.0 s
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*/ *n_7~ZX
public class ShellSort implements SortUtil.Sort{ |W*i'E
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/* (non-Javadoc) evlz R/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f,VJfY?#
*/ ?sclOOh
public void sort(int[] data) { z4r g.ai
for(int i=data.length/2;i>2;i/=2){ P( 1Z
for(int j=0;j insertSort(data,j,i); V5rW_X:]8
} [&+5E1%L
} _)MbvF
insertSort(data,0,1); wZb77
} N*'d]P2P`J
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/** {7^D!lis
* @param data ~IQw?a.E
* @param j w">-r}HnJ
* @param i l~ZIv
*/ {Z1^/Fv3
private void insertSort(int[] data, int start, int inc) { fBnlB_}e
int temp; -5GRit1q?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7 ;SI=
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} PDhoCAh
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} ]L_h3Xz\X
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快速排序: c4iGtW
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package org.rut.util.algorithm.support; }5=tUfh)]'
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import org.rut.util.algorithm.SortUtil; 94xWMX2
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/** +J7xAyv_Oz
* @author treeroot }o7"2hht
* @since 2006-2-2 Pvz\zRq
* @version 1.0 Y(C-o[-N
*/ 2py
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public class QuickSort implements SortUtil.Sort{ }\]J?I+ A
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/* (non-Javadoc) +t*Ks_V,*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VP_S[+Zv~
*/ qx`)M3Mu|<
public void sort(int[] data) { c63yJqiW
quickSort(data,0,data.length-1); %<@x(q
} (}MN16!
private void quickSort(int[] data,int i,int j){ ?K=
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int pivotIndex=(i+j)/2; BL H~`N3U
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SortUtil.swap(data,pivotIndex,j); |WsB0R
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int k=partition(data,i-1,j,data[j]); e#s-MK-Q
SortUtil.swap(data,k,j); Bb*P);#.K
if((k-i)>1) quickSort(data,i,k-1); -}9># <v
if((j-k)>1) quickSort(data,k+1,j); >_SqM! ^v
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} siD/`T&
/** xMHu:,ND
* @param data 3oMhsQz~z
* @param i dr]Pns9
* @param j Q3 yW#eD
* @return #L9F\ <K
*/ ,g:\8*Y>'
private int partition(int[] data, int l, int r,int pivot) { @<C<rB8R
do{ p
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fm$)?E_Rp
SortUtil.swap(data,l,r); }S6"$R
} &z?:s
while(l SortUtil.swap(data,l,r); _!E)a
return l; /Bp5^(s
} `R,g_{Mj
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} A_2oQ*
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改进后的快速排序: h9I vuv'
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package org.rut.util.algorithm.support; U flS`
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import org.rut.util.algorithm.SortUtil; Wph@LRB]
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/** Z&Xp9"j,@;
* @author treeroot WFG`-8_e[I
* @since 2006-2-2 h+j{;evN
* @version 1.0 G!.%Qqs
*/ `!@d$*:'
public class ImprovedQuickSort implements SortUtil.Sort { r0,XR
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private static int MAX_STACK_SIZE=4096; BTDUT%Yfg
private static int THRESHOLD=10; `
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/* (non-Javadoc) ~;yP{F8?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ]h?p3T$h
public void sort(int[] data) { N^%7
int[] stack=new int[MAX_STACK_SIZE]; u_jhmKr~
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int top=-1; `XrF ,
int pivot; oyq9XW~ D
int pivotIndex,l,r; -d_7 q
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stack[++top]=0; '|@?R |i0
stack[++top]=data.length-1; fzjAP7 y
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while(top>0){ 9qI#vHA
int j=stack[top--]; %JPBD]&M
int i=stack[top--]; x@? YS
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pivotIndex=(i+j)/2; 5DmW5w'p
pivot=data[pivotIndex]; |H
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SortUtil.swap(data,pivotIndex,j); ]i
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do{ m aOt/-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); si#1sdR
SortUtil.swap(data,l,r); raJv$P
} >b2wFo/em
while(l SortUtil.swap(data,l,r); l$ufW|
SortUtil.swap(data,l,j); 7~!F3WT{
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if((l-i)>THRESHOLD){ x*!%o(G
stack[++top]=i; OQiyAyX
stack[++top]=l-1; qu%}b>
} >G}g=zy@
if((j-l)>THRESHOLD){ f f5 e]^,
stack[++top]=l+1; hj,y l&
stack[++top]=j; Y+ !z]S/x
} ";;Nc>-Y
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} I6Ga'5bV
file://new InsertSort().sort(data); #83pitcc
insertSort(data); y&6 pc
} (D2N_l(`<
/** 2x!cblo
* @param data PnZY%+[I
*/ *9tRhRc
private void insertSort(int[] data) { *;[g Ga~
int temp; (O"-6`w[
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归并排序: =[LUOOR*]
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package org.rut.util.algorithm.support; _~bG[lX !
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import org.rut.util.algorithm.SortUtil; :gTtWJ04]
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/** Xx1e SX
* @author treeroot _K3;$2d|R
* @since 2006-2-2 GTke<R
* @version 1.0 #=,c8"O
*/ 5Kl;(0B9
public class MergeSort implements SortUtil.Sort{ (?1/\r
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/* (non-Javadoc) /kAbGjp0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [r^WS;9n
*/ ]JHInt
public void sort(int[] data) { Ie(M9QMp
int[] temp=new int[data.length]; _b9>ZF~
mergeSort(data,temp,0,data.length-1); rA /T>ZM
} &] O^d4/
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private void mergeSort(int[] data,int[] temp,int l,int r){ Y2}m/7aF
int mid=(l+r)/2; /YHnt-}v,
if(l==r) return ; s[#_sR`y
mergeSort(data,temp,l,mid); &M7AM"9
mergeSort(data,temp,mid+1,r); v)JS4KS
for(int i=l;i<=r;i++){ +LF`ZXe8l
temp=data; (BGflb
} upiYo(sN.
int i1=l; 7M<co,"
int i2=mid+1; C(n_*8{
for(int cur=l;cur<=r;cur++){ ak\[+wQ
if(i1==mid+1) ^/)%s 3
data[cur]=temp[i2++]; b\p2yJ\
else if(i2>r) %R P\,|
data[cur]=temp[i1++]; \G2PK&)F
else if(temp[i1] data[cur]=temp[i1++]; K"8!
else >
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data[cur]=temp[i2++]; EN5F*s@r
} q
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} S|]\q-qA&
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} PAXm
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改进后的归并排序: A8
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