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。 rd ]dDG
插入排序: T]lVwj
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package org.rut.util.algorithm.support; {(5M)|>
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import org.rut.util.algorithm.SortUtil; A3A"^f$$
/** t@cImmh\T
* @author treeroot *?R<gWCF
* @since 2006-2-2 ia*Bcx_RW+
* @version 1.0 P"s7}cl
*/ 4mci@1K#^
public class InsertSort implements SortUtil.Sort{ W@WKdaJ
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/* (non-Javadoc) D8=a +!l-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W~?mr!`
*/ pKhV<MFB
public void sort(int[] data) { aMO+y91Y(
int temp; >mp"=Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~+anI
} nD!5I@D
} V~4yS4
} kWxcB7)uk
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冒泡排序: 9~6~[z
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package org.rut.util.algorithm.support; cE7IHQ
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import org.rut.util.algorithm.SortUtil; P7y.:%DGD0
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/** &DX
* @author treeroot l>?k>NEpP
* @since 2006-2-2 }Oe9Zq
* @version 1.0 ?gl[=N V
*/ `dm}|$X|
public class BubbleSort implements SortUtil.Sort{ nhI1`l&
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pskg68W
*/ 0|OmQ\SQ
public void sort(int[] data) { '/Ag3R
int temp; +Hf Zs"x
for(int i=0;i for(int j=data.length-1;j>i;j--){ Nh+ZSV4WJ:
if(data[j] SortUtil.swap(data,j,j-1); Z >F5rkJ
} }8?1)l
} x[1(cj
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} zR6^rq*
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} \
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选择排序: 1xt N3{c
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package org.rut.util.algorithm.support; X0Zr?$q
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import org.rut.util.algorithm.SortUtil; }q<%![%
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/** 8VLD yX2-
* @author treeroot 7) e#b
* @since 2006-2-2 H/BU2s a
* @version 1.0 Fc.1)yh.
*/ r-IG.ym3
public class SelectionSort implements SortUtil.Sort { &~a/Upz0]_
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/* \ws^L,h
* (non-Javadoc) _.G p}0a
* z{ydP Ra
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
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*/ &W:R#/|
public void sort(int[] data) { t}2$no?
int temp; O a#m}b
for (int i = 0; i < data.length; i++) { [sweN]b6F
int lowIndex = i; 4.}J'3 .
for (int j = data.length - 1; j > i; j--) { {rWFgn4Li
if (data[j] < data[lowIndex]) { _$YT*o@0J
lowIndex = j; PTFe>~vr*
} +\@WOs
}
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SortUtil.swap(data,i,lowIndex); )3RbD#?
} k| Ye[GM*
}
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Shell排序: E]26a,^L
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package org.rut.util.algorithm.support; t:<dirw,o
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import org.rut.util.algorithm.SortUtil; ~Q/G_^U:
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/** Z_Z; g]|!
* @author treeroot h,WF'X+
* @since 2006-2-2 Lm}J&^>
* @version 1.0 _]~= Kjp
*/ G,6Zy-Y9
public class ShellSort implements SortUtil.Sort{ g<"k\qs7
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/* (non-Javadoc) fR6.:7&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Bhm\|t
*/ 07:N)y,
public void sort(int[] data) { @p}"B9h*^
for(int i=data.length/2;i>2;i/=2){ si|DxDx
for(int j=0;j insertSort(data,j,i); DRUvQf
} x!@P|c1nKC
} L&s|<<L
insertSort(data,0,1); 5Sm)+FC:
} E0Neo _7
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/** *U69rbYI
* @param data C0bOPn
* @param j Im* ~6[
* @param i !33)6*s
*/ 78[5@U
private void insertSort(int[] data, int start, int inc) { ao(lj
int temp; |`50Tf\J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #mDeA >b
} }&h*bim
} g)@d(EYY
} n,E=eNc
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} `0qBuE_^h
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快速排序: kA1C&
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package org.rut.util.algorithm.support; _poe{@h!
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import org.rut.util.algorithm.SortUtil; =/b WS,=
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/** 8'Y7lOXS
* @author treeroot AKbrXKx
* @since 2006-2-2 U0Y;*_>4
* @version 1.0 zL<<`u?
*/ ?pAO?5Z:}
public class QuickSort implements SortUtil.Sort{ > (.V(]{3y
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/* (non-Javadoc) @@O=a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qmk}smvH
*/ z+Cw*v\Y
public void sort(int[] data) { \ tK{!v+
quickSort(data,0,data.length-1); mimJ_=]DC
} \
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private void quickSort(int[] data,int i,int j){ ;hsem,C h7
int pivotIndex=(i+j)/2; 4%3R}-'mh
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SortUtil.swap(data,pivotIndex,j); G q" [5r"
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int k=partition(data,i-1,j,data[j]); m\}8N
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SortUtil.swap(data,k,j); U60jkzIRH
if((k-i)>1) quickSort(data,i,k-1); *r&q;ER
if((j-k)>1) quickSort(data,k+1,j); c)HHc0KD
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} z/,qQVv=}4
/** uP:Y[$O
* @param data aa'u5<<W
* @param i hSO(s
* @param j bvuoo/
* @return b~1]}9TJ
*/ #s!q(Rc
private int partition(int[] data, int l, int r,int pivot) { mv,<#<-W
do{ h|MTE~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h27awO
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SortUtil.swap(data,l,r); QEavbh^S
} >~g(acH%`x
while(l SortUtil.swap(data,l,r); Aj9Onz,Lg
return l; 7^fpbrj
} T\G2B*fGd
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} 4@qKML
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改进后的快速排序: y}fF<qih'>
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package org.rut.util.algorithm.support; nZfU:N
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import org.rut.util.algorithm.SortUtil; k
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/** |r]f2Mrm
* @author treeroot nTJ-1A7EP
* @since 2006-2-2 N(%%bHi#V
* @version 1.0 ?y] q\>
*/ =5UT'3p>
public class ImprovedQuickSort implements SortUtil.Sort { )w{bT]
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private static int MAX_STACK_SIZE=4096; oBA]qI
private static int THRESHOLD=10; ,_JhvPWR,)
/* (non-Javadoc) X`[P11`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ Y:~A-_
public void sort(int[] data) { Zy}Qc")Z
int[] stack=new int[MAX_STACK_SIZE]; WcCJ;z:S?k
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int top=-1; _h%
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int pivot; +h64idM{U
int pivotIndex,l,r; K+0&~XU
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stack[++top]=0; &B^zu+J
stack[++top]=data.length-1; gaK m`#
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while(top>0){ hPCt-
int j=stack[top--]; u,zA^%
int i=stack[top--]; uhyw?#f
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pivotIndex=(i+j)/2; yGNZw7^(
pivot=data[pivotIndex]; 0XrB+nt
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SortUtil.swap(data,pivotIndex,j); 9`"o,wGX3
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file://partition r/X4Hy0!lT
l=i-1; xiu?BP?V
r=j; [-Zp[
do{ Q9(J$_:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]s*Fs]1+H
SortUtil.swap(data,l,r); E8TJ*ZU
} [0_JS 2KE
while(l SortUtil.swap(data,l,r); O/X;(qYd
SortUtil.swap(data,l,j); C~do*rnM^
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if((l-i)>THRESHOLD){ Kn9O=?Xh;
stack[++top]=i; h'i8o>7
stack[++top]=l-1; =h?Q.vad
} -#=y
if((j-l)>THRESHOLD){ M*DF tp<
stack[++top]=l+1; ~s}0z&v^te
stack[++top]=j; IrAc&Eh