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。 9$d.P6|d>
插入排序: M<8ML!N0;t
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package org.rut.util.algorithm.support; `U`#I,Ln[
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import org.rut.util.algorithm.SortUtil; ,axDMMDI
/** _Sj}~H
* @author treeroot ;q#]-^
* @since 2006-2-2 fu\s`W6f&
* @version 1.0 iL?iz?+.%@
*/ (fk5'
public class InsertSort implements SortUtil.Sort{ "-i#BjZl/
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/* (non-Javadoc) 5vZ#b\;#V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EO"C8z'al
*/ p6 xPheD
public void sort(int[] data) { v"1Po_`
int temp; =fG:A(v%}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J=WB6zi
} setLdEi
} o$_93<zc
} cqL(^R.
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} 6* rcR]
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冒泡排序: delf
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package org.rut.util.algorithm.support; f{Q p
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import org.rut.util.algorithm.SortUtil; 4~u9B/v
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/** 13f<0wg
* @author treeroot lH1g[ ))
* @since 2006-2-2 ()|3
* @version 1.0 !L\'Mk/=A
*/ r+gjc?Ol
public class BubbleSort implements SortUtil.Sort{ VWvoQf^+
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/* (non-Javadoc) fGu!M9qN4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f$D@*33ft
*/ e@
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public void sort(int[] data) { .LE+/n
int temp; .H;B=nd*
for(int i=0;i for(int j=data.length-1;j>i;j--){ @phN|;?
if(data[j] SortUtil.swap(data,j,j-1); pieT'mA
} E <@\>y.[
} .hz2&9Ow
} !Cb=B
} j@P5(3r
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} ,/o(|sks
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选择排序: <aVfJd/fT
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package org.rut.util.algorithm.support; sv=^k(d3
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import org.rut.util.algorithm.SortUtil; vgk9b!Xd
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/** 05)|"EX)
* @author treeroot l{EU_|q
* @since 2006-2-2 `p|[rS>
* @version 1.0 %cj58zO|y
*/ |\{Nfm=:%
public class SelectionSort implements SortUtil.Sort { OOLe[P3J3
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/* JK^[{1
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* (non-Javadoc) Kq7C0)23
* $^$ECDOTB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HDj$"pS
*/ U"x~Jb3]O
public void sort(int[] data) { -3k;u
int temp; 6Q$BUL}2?
for (int i = 0; i < data.length; i++) { H-a^BZ&iU
int lowIndex = i; -A;w$j6*
for (int j = data.length - 1; j > i; j--) { "^"'uO$
if (data[j] < data[lowIndex]) { csvOg[
lowIndex = j; 1ZNNsB
} FNJ!IkuR
} ;IhPvff
SortUtil.swap(data,i,lowIndex); 9HKf^+';n
} 3kw}CaZ6
} xMsGs
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} +2yF|/WW#
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Shell排序: QK7e|M
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package org.rut.util.algorithm.support; J0qXtr%h\
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import org.rut.util.algorithm.SortUtil; T/Q==Q{W:
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/** NDW8~lkL
* @author treeroot Lupy:4AD
* @since 2006-2-2 :B^mV{~
* @version 1.0 `vX4!@Tw
*/ z"qv
public class ShellSort implements SortUtil.Sort{ w`-$-4i
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/* (non-Javadoc) TU-c9"7M~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MA"#rOcP
*/ eaxfn]gV
public void sort(int[] data) { fp-m.d:|
for(int i=data.length/2;i>2;i/=2){ I4ctxMVP
for(int j=0;j insertSort(data,j,i); 3.~h6r5-
} 9
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} xH@'H?
insertSort(data,0,1); tx)OJY
} #{~7G%GPY5
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/** ;%!tf{Si
* @param data $2is3;h
* @param j \
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* @param i >F|qb*Tm7
*/ d/4ubf+$k
private void insertSort(int[] data, int start, int inc) { )^(P@D.L
int temp; 6d};|#}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k%!VP=c4s
} v*Xk WH5
} uZ<%kV1B
}
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快速排序: *LEu=3lp%>
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package org.rut.util.algorithm.support; *bU% @O
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import org.rut.util.algorithm.SortUtil; ?4MSgu
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/** ysl8LK
* @author treeroot i.F8
* @since 2006-2-2 ]qMH=>pOsj
* @version 1.0 )*Vj3Jx
*/ Tfr`?:yF
public class QuickSort implements SortUtil.Sort{ \d ui`F"Cc
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/* (non-Javadoc) i<bxc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eL_^: -
*/ Jxf}b}^T
public void sort(int[] data) { )FV6,
quickSort(data,0,data.length-1); 1O23"o5=
} s9G)Bd 8
private void quickSort(int[] data,int i,int j){ oFb\TiLu
int pivotIndex=(i+j)/2; &b!vWX1N
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SortUtil.swap(data,pivotIndex,j); Mc!2mE%47m
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int k=partition(data,i-1,j,data[j]); XnPJC'
SortUtil.swap(data,k,j); e"lD`*U8R
if((k-i)>1) quickSort(data,i,k-1); yr%yy+(.k
if((j-k)>1) quickSort(data,k+1,j); JR!Q,7S2!N
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} "2%y~jrDN
/** T^d#hl.U
* @param data 2'|XtSj
* @param i ,YQ=Zk)w
* @param j $vW^n4!
* @return 0c`sb+?
*/ fJvr+4i4k
private int partition(int[] data, int l, int r,int pivot) { -*r [
do{ HE@-uh
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $]nVr(OZ_
SortUtil.swap(data,l,r); avmcGyL
} kHGeCJe\{
while(l SortUtil.swap(data,l,r); O(WEgz
return l; mn(/E/
} FLK"|*A
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} "k/;`eAP
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改进后的快速排序: W;q#ZD(;
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package org.rut.util.algorithm.support; i[o&z$JO
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import org.rut.util.algorithm.SortUtil; /4(Z`e;0
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/** ]!]`~ Z/
* @author treeroot =7F E/S
* @since 2006-2-2 YomwjKyuP
* @version 1.0 ~wa%fM
*/ p
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public class ImprovedQuickSort implements SortUtil.Sort { qK{|Q
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private static int MAX_STACK_SIZE=4096; UB5}i('L
private static int THRESHOLD=10; 1 d=0q?nH
/* (non-Javadoc) j~Xj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gkSGRshf
*/ !}z%#$
public void sort(int[] data) { Z`^
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int[] stack=new int[MAX_STACK_SIZE]; &
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int top=-1; +dDJes!]
int pivot; <m~T>Ql1
int pivotIndex,l,r; MP6 \r
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stack[++top]=0; yBr$ 0$
stack[++top]=data.length-1; /;zZnF\e
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while(top>0){ >|v=Ba6R0
int j=stack[top--]; p
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int i=stack[top--]; t^`<*H
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pivotIndex=(i+j)/2; We[<BJo4
pivot=data[pivotIndex]; |3s.;wK
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SortUtil.swap(data,pivotIndex,j); eUX@9eML
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file://partition Kh>?!`lL
l=i-1; 0*37D5jH
r=j; 3FGb Q_
do{ #k"1wSx16
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 516VQ<