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。 ll^Th >
插入排序: s>LA3kT
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package org.rut.util.algorithm.support; F~tm`n8Z
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import org.rut.util.algorithm.SortUtil; 3yeK@>C
/** ;gZwQ6)i
* @author treeroot 2b; rr
* @since 2006-2-2 &r&;<Q
* @version 1.0 KDux$V4
*/ += X).X0K
public class InsertSort implements SortUtil.Sort{ M' &J_g
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/* (non-Javadoc) 2 9&sydu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^wvH,>Yo
*/ qXXYF>Z-
public void sort(int[] data) { ^`l"'6
int temp; 8dV.nO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l\q*%'Pe
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冒泡排序: C!oS=qK?]
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package org.rut.util.algorithm.support; ?| D$#{^
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import org.rut.util.algorithm.SortUtil; hu bfK~
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/** SZCF3m&pz
* @author treeroot LEYWH%y
* @since 2006-2-2
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* @version 1.0
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*/ !7ei1
public class BubbleSort implements SortUtil.Sort{ aK8bKlZe
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/* (non-Javadoc) ^VSt9&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KC@k9e
*/ Fpy6"Z?z
public void sort(int[] data) { -9=M9}eDF
int temp; FQ;4'B^k]
for(int i=0;i for(int j=data.length-1;j>i;j--){ vGx?m@
if(data[j] SortUtil.swap(data,j,j-1);
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} Ha46U6_'h
} J!21`M-Ue
} 08TaFzP81
} !!?+M @
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选择排序: W?*Xy6",JF
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package org.rut.util.algorithm.support; \zk?$'d
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import org.rut.util.algorithm.SortUtil; +-Z"H)
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/** MgJ%26TZ
* @author treeroot 3a'Rs{qxn
* @since 2006-2-2 h(C#\{V
* @version 1.0 :zizca4
*/ =]_d pE EQ
public class SelectionSort implements SortUtil.Sort { fhBO~o+K>
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/* "D
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* (non-Javadoc) *G%1_
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4A\BGD*5
*/ 9f\aoVX
public void sort(int[] data) { bE7(L
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int temp; `c qH}2s#
for (int i = 0; i < data.length; i++) { nx!qCgo
int lowIndex = i; yj}bY?4I
for (int j = data.length - 1; j > i; j--) { Ns+)Y^(5
if (data[j] < data[lowIndex]) { =yk Rki
lowIndex = j; )64LKb$
} HGP%a1RF#
} kPx]u\
SortUtil.swap(data,i,lowIndex); @+0@BO12
} fZka%[B
} w0a+8gexi
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} kjLsk-
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Shell排序: &A ;3; R
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package org.rut.util.algorithm.support; `^XRrVX<
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import org.rut.util.algorithm.SortUtil; FbNH+?
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/** rd&*j^?
* @author treeroot EmtDrx4!(f
* @since 2006-2-2 U~u6}s]:
* @version 1.0 dCf'\@<<
*/ z")3_5Br
public class ShellSort implements SortUtil.Sort{ p0}+071o%
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/* (non-Javadoc) 8k+q7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vh1
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*/ p^pQZ6-
public void sort(int[] data) { !uj!
for(int i=data.length/2;i>2;i/=2){ Lu8%qcC
for(int j=0;j insertSort(data,j,i); 'Yaf\Hp
} &X#x9|=&O
} .G5NGB
insertSort(data,0,1); |0C|$2
} Z`-)1!
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/** dvg;
* @param data x*loACee.
* @param j x[GFX8h(k6
* @param i `@fhge
*/ XhlI|h-j
private void insertSort(int[] data, int start, int inc) { ;X*K*q
int temp; !^Z[z[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3X-{2R/ 3
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快速排序: 8
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package org.rut.util.algorithm.support; :)A.E}G
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import org.rut.util.algorithm.SortUtil; SxLHFN]
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/** t?%}hs\!
* @author treeroot ;3.T* ?|o
* @since 2006-2-2 OUBgBr
* @version 1.0 YobC'c\~9
*/ M/8#&RycQ
public class QuickSort implements SortUtil.Sort{ ,%)WT>
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/* (non-Javadoc) |k7ts&2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q^1#xBd
*/ eu}:Wg2
public void sort(int[] data) { i
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quickSort(data,0,data.length-1); Pjj;.c 7_j
} OVQxZ~uQ
private void quickSort(int[] data,int i,int j){ {jx#^n&5R
int pivotIndex=(i+j)/2; ;H m-,W
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SortUtil.swap(data,pivotIndex,j); 5H'b4Cyi`
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int k=partition(data,i-1,j,data[j]); Ru9pb~K
SortUtil.swap(data,k,j); m5'__<
if((k-i)>1) quickSort(data,i,k-1); , IMT '*
if((j-k)>1) quickSort(data,k+1,j); :uT
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/** #RLch
* @param data NSiYUAug
* @param i eBSn1n
* @param j 6,g5To#vw
* @return r$3~bS$]
*/ N)
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private int partition(int[] data, int l, int r,int pivot) { 6gg# Z
do{ <750-d!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <@x+N%C
SortUtil.swap(data,l,r); RBv=
} $:-= >
while(l SortUtil.swap(data,l,r); #/XK&(X
return l; }'w^<:RSy
} R+ #.bQg
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} Ow($\,
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改进后的快速排序: Be14$7r
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package org.rut.util.algorithm.support; gk_X u
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import org.rut.util.algorithm.SortUtil; ?^G$;X7B
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/** ZAnO$pA
* @author treeroot S{"6PXzb
* @since 2006-2-2 @|\s$L
* @version 1.0 -%/,j)VKD
*/ <-oRhi4
public class ImprovedQuickSort implements SortUtil.Sort { (W}i287
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private static int MAX_STACK_SIZE=4096; =DF@kR[CH"
private static int THRESHOLD=10; |$|n V^y
/* (non-Javadoc) *2m&?,nJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t#D\*:Xi
*/ 7z P
public void sort(int[] data) { /xrq'|r?C
int[] stack=new int[MAX_STACK_SIZE]; g6a3MJV`
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int top=-1; Bu>yRL=*
int pivot; 'bY|$\I
int pivotIndex,l,r; <8z[,X}bM
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stack[++top]=0; 1o6J9kCq^3
stack[++top]=data.length-1; w3?t})PB&
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while(top>0){ }&C!^v
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int j=stack[top--]; HU'`kimWb
int i=stack[top--]; 4K?H-Jco
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pivotIndex=(i+j)/2; ^)0{42!]
pivot=data[pivotIndex]; {</$ObK
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SortUtil.swap(data,pivotIndex,j); -I$txa/"|
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file://partition PEQvEruZ}
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