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。 Gpm{m:$L
插入排序: 66^ycZCH
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package org.rut.util.algorithm.support; ;'81jbh
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import org.rut.util.algorithm.SortUtil; J=pztASt
/** i)#s.6.D>
* @author treeroot LL|7rS|o
* @since 2006-2-2 ,J`'Y+7W
* @version 1.0 nW;g28
*/ aM7uBx\8 5
public class InsertSort implements SortUtil.Sort{ >A0k 8T
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/* (non-Javadoc) PrudhUI^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :
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*/ A
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public void sort(int[] data) { .uNQBBNv
int temp; G_> #Js
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _+
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} o)OUWGjb/K
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冒泡排序: ^z,_+},a3T
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package org.rut.util.algorithm.support; Bi@&nAhn@
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import org.rut.util.algorithm.SortUtil; C7H/N<VAq
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/** XUuu-wm:}
* @author treeroot [:^-m8QC
* @since 2006-2-2 K|DWu8
* @version 1.0 88c<:fK
*/ $lhC{&tBV
public class BubbleSort implements SortUtil.Sort{ 7LO%#No",
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/* (non-Javadoc) z>w`ZD}XY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N)&4Hy
*/ >DPB!XA3
public void sort(int[] data) { OgF+OS
int temp; w
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for(int i=0;i for(int j=data.length-1;j>i;j--){ gKOOHUCb
if(data[j] SortUtil.swap(data,j,j-1); ,;M4jc{
} !"+'A)Nve
} iS5W>1]
} O5H9Y}i]
} hDV20&hq
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} *6 _tQ9G
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选择排序: Jvun?J
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package org.rut.util.algorithm.support; K-&V,MI
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import org.rut.util.algorithm.SortUtil; )P7)0c
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/** B75k^ohfj
* @author treeroot M)sZSH.<O
* @since 2006-2-2 3pmWDG6L
* @version 1.0 MLFKH
*/ 0(_l|PScF
public class SelectionSort implements SortUtil.Sort { 0@2mXO9f"
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/* %%cHoprDa
* (non-Javadoc) ={hX}"*D
* 6rS$yjTX!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9:I6( Zv0
*/ rpw.]vnn
public void sort(int[] data) { hK<5KZ/4
int temp; QJ|a p4r
for (int i = 0; i < data.length; i++) { e)E$}4
int lowIndex = i; +nQw?'9Z
for (int j = data.length - 1; j > i; j--) { ^!q?vo\j|
if (data[j] < data[lowIndex]) { ;W>Y:NCrp
lowIndex = j; ^( Rvk
} ]0L&v7[
} xV%6k{_:G
SortUtil.swap(data,i,lowIndex); c*UvYzDZL
} *!^<m0
} X*,Kb(3
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} -gQCn>"
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Shell排序: A{B/lX)
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package org.rut.util.algorithm.support; ""Q1|
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import org.rut.util.algorithm.SortUtil; #lU9yv
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/** LL$_zK{
* @author treeroot Ge d [#Q
* @since 2006-2-2 0| ;
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* @version 1.0 k<+0o))
*/ U?.9D
public class ShellSort implements SortUtil.Sort{ ^fz+41lE\
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/* (non-Javadoc) S(:l+JP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t20PP4FWM
*/ ^*\XgX
public void sort(int[] data) { a6kV!,.U
for(int i=data.length/2;i>2;i/=2){ <'G~8tA%v
for(int j=0;j insertSort(data,j,i); Xv@SxS-5l
} 5[n(7;+gw
} ]\ngX;h8G
insertSort(data,0,1); R>`}e+-D
} 4`Ic&c/
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/** 9_sA&2P{uV
* @param data +/D>|loRC
* @param j $)H@|<K
* @param i J9T3nTfL
*/ lgpW@g
private void insertSort(int[] data, int start, int inc) { ];%0qb
int temp; ddVa.0Z!<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G^"Vo x4
} 7RDDdF E!
} eiJ2NwR\w
} wM_c48|d
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} /*Qq[C
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快速排序: OiDhJ
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package org.rut.util.algorithm.support; #P#-xz
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import org.rut.util.algorithm.SortUtil; ! Q<>3xZ
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/** f&D]anf33
* @author treeroot 8}w6z7e|{
* @since 2006-2-2 XYoIFv?'
* @version 1.0 :fk2]{KTL
*/
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public class QuickSort implements SortUtil.Sort{ HG'{J ^t
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/* (non-Javadoc) 5X.e*;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fJZp?e"
*/ S(aZ4{a@
public void sort(int[] data) { (Toq^+`c
quickSort(data,0,data.length-1); e"r)R8
} `]Bxn)b(
private void quickSort(int[] data,int i,int j){ D|qk_2R%
int pivotIndex=(i+j)/2; Z`3ufXPNlO
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SortUtil.swap(data,pivotIndex,j); \Ep0J $ #o
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int k=partition(data,i-1,j,data[j]); 6mH/ m&
SortUtil.swap(data,k,j); b%f[p/no
if((k-i)>1) quickSort(data,i,k-1); kX:tc
if((j-k)>1) quickSort(data,k+1,j); n]+W 3[i
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} .yENM[-bQ
/** G#Ou[*O'
* @param data #GaxZ
* @param i LflFe@2
* @param j <\zCpkZ'B
* @return D}3XFuZs_
*/ 6a}"6d/sTL
private int partition(int[] data, int l, int r,int pivot) { $>U#
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do{ TO,rxf
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `IINq{Zk
SortUtil.swap(data,l,r); FI8Oz,
} A$g+K,.l
while(l SortUtil.swap(data,l,r); G1 o70
return l; ^7]"kg DA
} fQ>4MKLw=d
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} ~tB;@e
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改进后的快速排序: j<%])
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package org.rut.util.algorithm.support; 7nzGAz_W
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import org.rut.util.algorithm.SortUtil; a:YI"*S
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/** iAMtejw
* @author treeroot 6{d6s#|%
* @since 2006-2-2 U-wLt(Y<
* @version 1.0 ~{>?*Gd&T
*/ t"j|nz{m
public class ImprovedQuickSort implements SortUtil.Sort { B@Nt`ky0*
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private static int MAX_STACK_SIZE=4096; S~$'WA
private static int THRESHOLD=10; :PbDU$x
/* (non-Javadoc) Vv$HR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PZ8U6K'
*/ xr(|*
public void sort(int[] data) { hM@\RPsY
int[] stack=new int[MAX_STACK_SIZE]; G)>W'yxQ
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int top=-1; 5sde
int pivot; ngulc v
int pivotIndex,l,r; iNCX:Y
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stack[++top]=0; 0h$GI"dR
stack[++top]=data.length-1; )_zlrX
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while(top>0){ z41_oG7
int j=stack[top--]; 4"\yf
int i=stack[top--]; =j0x.fSe
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pivotIndex=(i+j)/2; P,gdnV
^
pivot=data[pivotIndex]; 151tXSzLT
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SortUtil.swap(data,pivotIndex,j); x2|6
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file://partition ,gnQa
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r=j; O}Ui`eWU
do{ [_y@M
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]6tkEyuq
SortUtil.swap(data,l,r); tqOi
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} Ccfwax+
while(l SortUtil.swap(data,l,r); FgA//)1
SortUtil.swap(data,l,j); MrE<vw@he
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if((l-i)>THRESHOLD){ {F*N=pSq
stack[++top]=i; ;Hm'6TR!
stack[++top]=l-1; Kn+=lCk
} b`cYpcs
if((j-l)>THRESHOLD){ |pZo2F!.
stack[++top]=l+1; gvli %9n
stack[++top]=j; d&:H&o)T!
} >Pe:I
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} {7Cx#Ewd
file://new InsertSort().sort(data); >e5zrgV
insertSort(data); Q 882B1H
} r
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/** 0rMqWP
* @param data .")b?#K
*/ PB~_I=
private void insertSort(int[] data) { &yH#s
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int temp; nR5bs;gk"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]>:^d%n,}
} ;np_%?is
} i8V0Ty4~N
} ]S8LY.Az5
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} [h}K$q
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归并排序: %u]6KrG18b
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package org.rut.util.algorithm.support; 9n}A ^
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import org.rut.util.algorithm.SortUtil; c]Unbm^w
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/** +!&$SNLh(
* @author treeroot :B#EqeI
* @since 2006-2-2 y~#\#w{
* @version 1.0 ZW ye>]
*/ t/:w1rw
public class MergeSort implements SortUtil.Sort{ %= u/3b:o
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/* (non-Javadoc) j)D-BK&+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4e%8D`/=M
*/ ^E@@YV
public void sort(int[] data) { '_Wt}{h
int[] temp=new int[data.length]; eYP=T+
mergeSort(data,temp,0,data.length-1); ]UUI~sFE
} 7u%a/ <
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private void mergeSort(int[] data,int[] temp,int l,int r){ kJ8vKcc
int mid=(l+r)/2; t!l%/$-
if(l==r) return ; u7k|7e=xk
mergeSort(data,temp,l,mid); ?R?Grw)`H
mergeSort(data,temp,mid+1,r); QP\yaPE
for(int i=l;i<=r;i++){ sMi{"`37
temp=data; $v&C@l \
} |QYZRz
int i1=l; jKt-~:
int i2=mid+1;
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for(int cur=l;cur<=r;cur++){ R<&FhT]
if(i1==mid+1) $Xt;A&l2?
data[cur]=temp[i2++]; A^pW]r=Xtk
else if(i2>r) u( 9X
data[cur]=temp[i1++]; UD*+"~
else if(temp[i1] data[cur]=temp[i1++]; ]V<"(?,K
else :o\5K2]:
data[cur]=temp[i2++]; B
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} Qq0O0U
} E/"SU*Co
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} ^g]xU1] *
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改进后的归并排序: 2Guvze_bU
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package org.rut.util.algorithm.support; A70(W{6a9@
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import org.rut.util.algorithm.SortUtil; >-<F)
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/** VG\mo?G
* @author treeroot 6F ;Or
* @since 2006-2-2 LVmY=d>
* @version 1.0 N *1
*/ *tG11gR,&