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。 (_~Dyvo
插入排序: %0eVm
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package org.rut.util.algorithm.support; 6
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import org.rut.util.algorithm.SortUtil; eP|hxqM&9
/** aaesgF
* @author treeroot xy<)zKp
* @since 2006-2-2 ]4-t*Em
* @version 1.0 JuXuS
*/ k|_LF[* Z
public class InsertSort implements SortUtil.Sort{ @>hXh
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/* (non-Javadoc) #N|A@B5x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gS^Y?
*/ r1Cq8vD*m
public void sort(int[] data) { j2,w1f}T
int temp; w,zgYX&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *[wj )
} 9TOqA4
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冒泡排序: 3gU*,K7
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package org.rut.util.algorithm.support; a'A'%+2
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import org.rut.util.algorithm.SortUtil; Hqm1[G)
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/** (
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* @author treeroot d7Devs
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* @since 2006-2-2 >>HC|
* @version 1.0 ,*'aH z
*/ _i+7O^=d6X
public class BubbleSort implements SortUtil.Sort{ *f( e`3E
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/* (non-Javadoc) B< BS>(Nr>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~'L`RJR
*/ Gf1O7L1rX
public void sort(int[] data) { naB`@
int temp; @je vY81)
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?e+$?8l[3
if(data[j] SortUtil.swap(data,j,j-1); 0] $5jW6]
} xK C{P{:
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} rCdf*;
} P _3U4J
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} QHuh=7u)
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选择排序:
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package org.rut.util.algorithm.support; 5uufpvah
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import org.rut.util.algorithm.SortUtil; b5Pakz=jNM
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/** bkfk9P
* @author treeroot
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* @since 2006-2-2 vswBK-w(Z
* @version 1.0 [v$NxmRu
*/ #[{xEVf
public class SelectionSort implements SortUtil.Sort { mjz<,s`D
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/* l]o)KM<
* (non-Javadoc) 6C|]Fm
* 'uOzC"_yF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \4e6\6 +
*/ nmrYB w>
public void sort(int[] data) { %[C-KQH
int temp; 3V`.<
for (int i = 0; i < data.length; i++) { _z3YB
int lowIndex = i; `Gp!Y
for (int j = data.length - 1; j > i; j--) { _C97G&
if (data[j] < data[lowIndex]) { N>}2&'I
lowIndex = j; [5Dg%?x
} #UpxF?A(
} +w
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SortUtil.swap(data,i,lowIndex); dECH/vJ^
} HGjGV]N5
} cWA$O*A
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Shell排序: "gPAxt
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package org.rut.util.algorithm.support; MjHjL~Tg
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import org.rut.util.algorithm.SortUtil; GI:$(<
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/** *t+E8)qL
* @author treeroot CxOBH89(
* @since 2006-2-2 HBFuA.",
* @version 1.0 =_L
*/ 8/y~3~A{D
public class ShellSort implements SortUtil.Sort{ }w)`)N
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/* (non-Javadoc) HjFY>(e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hf'yRKACj
*/ @Sl!p)
public void sort(int[] data) { j>0~"A
for(int i=data.length/2;i>2;i/=2){ 9#;UQ.qA
for(int j=0;j insertSort(data,j,i); igW>C2J
} rpNe8"sh
} *G{Zo*2<
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insertSort(data,0,1); G
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} z4nVsgQ$
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/** H?=D,
* @param data Y{8L ~U:
* @param j d[9NNm*htC
* @param i ,j ('QvavJ
*/ H5N(MihT
private void insertSort(int[] data, int start, int inc) { dIo|i,-
int temp; nAp7X-t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4D/mm(2d$
} >)N}V'9
} Lz
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} RhJL`>W`
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}
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快速排序: N!fp;jvG
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package org.rut.util.algorithm.support; e< Ee2pGX
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import org.rut.util.algorithm.SortUtil; YSuwV)Y
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/** [)gvP'
* @author treeroot 6wWA(![w"
* @since 2006-2-2 k*4?fr
* @version 1.0 DOXRU5uP3
*/ ~~ON!l9n
public class QuickSort implements SortUtil.Sort{ Hc@Z7eQ3^
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/* (non-Javadoc) FVsNOU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z^4\?R50yO
*/ _W:
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public void sort(int[] data) { TBQ`:`g^m
quickSort(data,0,data.length-1); rrSA.J{
} MjI}fs<
private void quickSort(int[] data,int i,int j){ 55oLj.l^j
int pivotIndex=(i+j)/2;
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SortUtil.swap(data,pivotIndex,j); ,gU9ywg
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int k=partition(data,i-1,j,data[j]); )`rC"N)
SortUtil.swap(data,k,j);
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if((k-i)>1) quickSort(data,i,k-1); ftq~AF
if((j-k)>1) quickSort(data,k+1,j); 'q[V*4g
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} pAmTwe
/** U
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* @param data e7L;{+XI
* @param i yh5KN_W
* @param j Y@.> eS
* @return zck)D^,aO
*/ U2ANu|
private int partition(int[] data, int l, int r,int pivot) { [jumq1
do{ B>47Ic
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]dDyz[NuvD
SortUtil.swap(data,l,r); ,)L.^<
} vS<;:3
while(l SortUtil.swap(data,l,r); q0y?$XS
return l; /KKX;L[D(
} v *:m|wl
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} 3iWLo Qm
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改进后的快速排序: ^:-%tpB#!
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package org.rut.util.algorithm.support; dm$:xE":
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import org.rut.util.algorithm.SortUtil; .yWdlq##
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/** udc9$uO
* @author treeroot `%ymg8^
* @since 2006-2-2 0/K NXz
* @version 1.0 &U
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*/ g1J]z<&
public class ImprovedQuickSort implements SortUtil.Sort { f\(K ou$
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private static int MAX_STACK_SIZE=4096; >8NQ8i=]V1
private static int THRESHOLD=10; 5. l&nt'
/* (non-Javadoc) q>omCk%h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |J}~a8o
*/ 3\@6i'
public void sort(int[] data) { [1vrv(u>
int[] stack=new int[MAX_STACK_SIZE]; NM]6 o
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int top=-1; 8'cD K[L
int pivot; 3YT _GW{
int pivotIndex,l,r; 'ZDa *9nkF
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stack[++top]=0; E0oJ|My
stack[++top]=data.length-1; ^$#Q_Y|
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while(top>0){ o!H"~5Trv!
int j=stack[top--]; L:^'cl}
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int i=stack[top--]; 5!cplx=<
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pivotIndex=(i+j)/2; L,kF]
pivot=data[pivotIndex]; sU}e78m h
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SortUtil.swap(data,pivotIndex,j); q5RLIstQ\
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do{ 5g&'n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \dc`}}Lc
SortUtil.swap(data,l,r); Y|lMa?\E
} be@MQ}6>
while(l SortUtil.swap(data,l,r); uuC/F_='B
SortUtil.swap(data,l,j); {jq-dL
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if((l-i)>THRESHOLD){ <n`|zQ
stack[++top]=i; "M*\,IH
stack[++top]=l-1; '/p5tw8
} l`u*,"$
if((j-l)>THRESHOLD){ eeX)JC0A
stack[++top]=l+1; (p2a{v}fEz
stack[++top]=j;
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} [,e_2<
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} 5y~[2jB:
file://new InsertSort().sort(data); ``\H'^{B
insertSort(data); 7:;V[/
} ~p 1y+
/** r:o!w7C:a
* @param data \4&g5vE
*/ oyd{}$71d
private void insertSort(int[] data) { m 8f_w
int temp; U--ER
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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); [zfGDMG&
} KVntBe]I
} NSkI2>+P
} P6?Q;-\q0
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} #nd,c n
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归并排序: X3>(K1
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package org.rut.util.algorithm.support; ?:2Xh/8-
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import org.rut.util.algorithm.SortUtil; SW=p5@Hy{
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/** =wQ=`
* @author treeroot %SE g(<