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。 $H0diwl9R
插入排序: GCrIaZ
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package org.rut.util.algorithm.support; 3C:!\R
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import org.rut.util.algorithm.SortUtil; rw CFt6;v
/** rbC4/ 9G\
* @author treeroot \R!.VL3Tx$
* @since 2006-2-2 O$dcy!
* @version 1.0 0 QzUcr)3+
*/
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public class InsertSort implements SortUtil.Sort{ iJ8 5okv'
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/* (non-Javadoc) 0P MF)';R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "zN2+X"&
*/ :ik$@5wp
public void sort(int[] data) { L#
int temp; yQP!Vt^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aJ!(c}N~97
} =D&xw2
} JA=9EnTU
} C-wwQbdG/
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冒泡排序: 4[\$3t.L
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package org.rut.util.algorithm.support; q,e{t#t
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import org.rut.util.algorithm.SortUtil; y#Cp Vm#!>
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/** ^*6So3
* @author treeroot os:/-A_m
* @since 2006-2-2 ] ^f7s36
* @version 1.0 8|-j]
*/ gKp5*
public class BubbleSort implements SortUtil.Sort{ S%NS7$`a
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/* (non-Javadoc) Lg;b17
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YN=dLr([<
*/ SHoov
public void sort(int[] data) { $A4rdhvd
int temp; jb~W(8cj
for(int i=0;i for(int j=data.length-1;j>i;j--){ L&gC
if(data[j] SortUtil.swap(data,j,j-1); NZu\ Ae
} `&3hfiI}
} %NyV2W=~X
} 3CKd[=-Z
} rLkUIG
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} PIZnzZ@Z;
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选择排序: TO(2n8'fdO
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package org.rut.util.algorithm.support; ( M > C
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import org.rut.util.algorithm.SortUtil; %i!=.7o.
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/** jY~W*
* @author treeroot |JUb 1|gi
* @since 2006-2-2 a&sVcsX
* @version 1.0 "wPA;4VQ
*/ miWPLnw=L
public class SelectionSort implements SortUtil.Sort { 9s#Q[\B!
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/* &Zxo\[lP
* (non-Javadoc) d9j+==S
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8fG$><@
*/ bqo+b{i\
public void sort(int[] data) { O#}d!}SIp
int temp; b]-~{' +
for (int i = 0; i < data.length; i++) { F!>92H~3G
int lowIndex = i; t;3n
for (int j = data.length - 1; j > i; j--) { G}2DZ=&>'
if (data[j] < data[lowIndex]) { \n&l
lowIndex = j; iY|zv|;]=
} {r.KY
} '8k{\>
SortUtil.swap(data,i,lowIndex); '7Ad:em
} ^R g=*L
} ^|b ]E
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} iXF iFsb
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Shell排序: +qWrm|O]
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package org.rut.util.algorithm.support; P' ";L6h
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import org.rut.util.algorithm.SortUtil; `Kt]i5[ "
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/** tRUGgf`
* @author treeroot ?(t{VdZSzQ
* @since 2006-2-2 t PJW|wo
* @version 1.0 H3}eFl=i2
*/ `4xnM`:L"
public class ShellSort implements SortUtil.Sort{ Wzn!BgxRr
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/* (non-Javadoc) UY ^dFbJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _,"?R]MO
*/ %2S+G?$M?
public void sort(int[] data) { }L!%^siG_
for(int i=data.length/2;i>2;i/=2){ Y%OJ3B(n|
for(int j=0;j insertSort(data,j,i); (O[:-Aqm
} `rwzCwA1
} %(P\"hE'
insertSort(data,0,1); 6'F4p1VG*I
} #4yh-D"
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/** ?k 4|;DD
* @param data qe/|u3I<lF
* @param j <P%<EgOE
* @param i 9=l6NNe)|
*/ i"B q*b@
private void insertSort(int[] data, int start, int inc) { 9s.x%m,
int temp; 1"hd5a
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hoj('P2a#n
} FFG/v`NM
} L[j73z'
} Vgj&hdbd
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} un&Z'
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快速排序: SU`RHAo
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package org.rut.util.algorithm.support; K> rZJ[a
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import org.rut.util.algorithm.SortUtil; 7\T~KYb?
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/** Uo~-^w}
* @author treeroot q
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* @since 2006-2-2 mY'c<>6t
* @version 1.0 aFbIJm=!
*/ 3IlflXb
public class QuickSort implements SortUtil.Sort{ q^I/
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/* (non-Javadoc) CyWMr/'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $:4*?8K2
*/ {hNvCk
public void sort(int[] data) { (C&Lpt_
quickSort(data,0,data.length-1);
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} QAk.~ob
private void quickSort(int[] data,int i,int j){ w nPg ).
int pivotIndex=(i+j)/2; 1KI,/ H"SY
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SortUtil.swap(data,pivotIndex,j); MS=zG53y
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int k=partition(data,i-1,j,data[j]); J%
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SortUtil.swap(data,k,j); d%EUr9~?
if((k-i)>1) quickSort(data,i,k-1); {,9^k'9
if((j-k)>1) quickSort(data,k+1,j); zK_+UT
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} iPuX
/** 1Z$` }a
* @param data K<g<xW* X
* @param i JO&~mio
* @param j xh90qm
* @return -".q=$f
*/ |Y9mre.Y;
private int partition(int[] data, int l, int r,int pivot) { Qm >x?
do{ ?x\tE]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C||9u}Q<
SortUtil.swap(data,l,r); A><q-`bw
} 6F)^8s02h
while(l SortUtil.swap(data,l,r); $GI
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return l; zZhA]J
} c97?+Y^
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} 2X)n.%4g$;
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改进后的快速排序: X9S`#N
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package org.rut.util.algorithm.support; G%q^8#
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import org.rut.util.algorithm.SortUtil; <aPbKDF~V
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/** WxrGoo^
* @author treeroot g2|qGfl{C
* @since 2006-2-2 gx55.}
* @version 1.0 xl]1{$1M
*/ aQTISX;
public class ImprovedQuickSort implements SortUtil.Sort { dsiQ~ [
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private static int MAX_STACK_SIZE=4096; K8?]&.!
private static int THRESHOLD=10; vUNmN2pRJ
/* (non-Javadoc) Nj^:8]D)0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ fK?/o]vq
public void sort(int[] data) { ~ZuFMVR
int[] stack=new int[MAX_STACK_SIZE]; fp)%Cr
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int top=-1; +5k^-
int pivot; <j<V{Wc
int pivotIndex,l,r; gAPD
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stack[++top]=0; 4[P]+Z5b+
stack[++top]=data.length-1; ih[!v"bv
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while(top>0){ MJ..' $>TC
int j=stack[top--]; 6A;,Ph2
int i=stack[top--]; VHbQLJ0
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pivotIndex=(i+j)/2; ! !we4tWq
pivot=data[pivotIndex]; EG&97lb
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SortUtil.swap(data,pivotIndex,j); =U- w!uW
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file://partition #JD:i%
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do{ 2Vwv#NAV k
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1!P\x=Nn_
SortUtil.swap(data,l,r); 7/># yR
} GX\6J]x=^2
while(l SortUtil.swap(data,l,r); 8rEUZk
SortUtil.swap(data,l,j); m5'nqy F
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if((l-i)>THRESHOLD){ {Y7dE?!`7
stack[++top]=i; +~{Honj[
stack[++top]=l-1; vWh]1G#'p[
} 1<(('H
if((j-l)>THRESHOLD){ gT&s &0_7
stack[++top]=l+1;
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stack[++top]=j; ,Qb(uirl]
} B_3:.1>"BM
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} 9[@K4&