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。 -Oo7]8
插入排序: 4XkSj9D~z
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package org.rut.util.algorithm.support; =H'7g6
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import org.rut.util.algorithm.SortUtil; GEg8\
/** 9(%ptnya
* @author treeroot 0]dL;~0y.
* @since 2006-2-2 Kvu0Av-7
* @version 1.0 ''9FB5
*/ k1A64?p
public class InsertSort implements SortUtil.Sort{ a95QDz
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/* (non-Javadoc) *siN#,5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 09Sy-
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public void sort(int[] data) { a@&^t( 1
int temp; /f!CX|U
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @"*8nV#
} x(e=@/qp
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冒泡排序: c\.8hd=<
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package org.rut.util.algorithm.support; #ii,GN~N
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import org.rut.util.algorithm.SortUtil; G)A5;u\P9
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/** I'URPj:t
* @author treeroot -[kbHrl&
* @since 2006-2-2 b"+J8W
* @version 1.0 <r*A(}Y
*/ 33O@jbs@
public class BubbleSort implements SortUtil.Sort{ [.}-n AN
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/* (non-Javadoc) tUXq!r<'dT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3|/<Pk
*/ 9JHu{r"M
public void sort(int[] data) { 6?U2Et
int temp; ;c5Q"
for(int i=0;i for(int j=data.length-1;j>i;j--){ *KP
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if(data[j] SortUtil.swap(data,j,j-1); ?]S!-6:
} ;>o}/h
} b469
} V$Y5EX
} h9)QQPP
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} '-F
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选择排序: $7{V+>
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package org.rut.util.algorithm.support; >$]SYF29
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import org.rut.util.algorithm.SortUtil; y0Pr[XZ
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/** m:77pE&o
* @author treeroot UE4zmIq
* @since 2006-2-2 h' OLj#H
* @version 1.0 $x&\9CRM
*/ (,<ti):
public class SelectionSort implements SortUtil.Sort { J[:3H6%`
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/* F`9;s@V*
* (non-Javadoc) @P:
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cGw* edgp6
*/ Xp]tL3-p
public void sort(int[] data) { *N"bn'>3
int temp; 3IqYp K(s
for (int i = 0; i < data.length; i++) { P7n+@L$
int lowIndex = i; ~%9ofXy
for (int j = data.length - 1; j > i; j--) { #NM.g
if (data[j] < data[lowIndex]) { #`6A}/@.+
lowIndex = j; ,*fvA?
} ]p(jL7
} <tZPS`c'_
SortUtil.swap(data,i,lowIndex); %?lPS
} Hh=D:kE
} s}Q%]W
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Shell排序: /i+8b(x
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package org.rut.util.algorithm.support; (o,&P9
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import org.rut.util.algorithm.SortUtil; h 5Y3
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/** w$*t.Q*
* @author treeroot ;ti{
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* @since 2006-2-2 U$KdY _Z97
* @version 1.0 M>df7.N7%P
*/ O$B]#]L+
public class ShellSort implements SortUtil.Sort{ { U a19~'>
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/* (non-Javadoc) Z3=DM=V;v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,[IN9W
*/ SE+K"faKQ
public void sort(int[] data) { :0Nd4hA
for(int i=data.length/2;i>2;i/=2){ iulM8"P
for(int j=0;j insertSort(data,j,i); TL(L[
} KYY~ YP
} v2 [
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insertSort(data,0,1); *B(na+
} vs|>U-Mpw~
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/** e!}R1
* @param data <{.o+~k
* @param j 3`4g*wO
* @param i z;UkK
*/ %k#Q)zWJ
private void insertSort(int[] data, int start, int inc) { }pKHa'/\
int temp; DJlY~}v#_
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /OaLkENgvf
}
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} F7^d@hSV
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快速排序: v"Bv\5f,Ys
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package org.rut.util.algorithm.support; F(/^??<5
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import org.rut.util.algorithm.SortUtil; +vfk+6
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/** &;7\/m*W1
* @author treeroot VF=$'Bl|
* @since 2006-2-2 dI&2dcumS
* @version 1.0 5I5~GH
*/ <2w@5qL
public class QuickSort implements SortUtil.Sort{ BvpGP
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/* (non-Javadoc) e-f_#!bW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =!r9;L,?
*/ $@q)IK%FDL
public void sort(int[] data) { +\9Y;Ny
quickSort(data,0,data.length-1); E]6C1C&K
} uYiM~^0
private void quickSort(int[] data,int i,int j){ 72} MspzUt
int pivotIndex=(i+j)/2; [Z0 &`qz
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SortUtil.swap(data,pivotIndex,j); ]c8lZO>
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); ;ej;<7+
if((k-i)>1) quickSort(data,i,k-1); /AWV@'
if((j-k)>1) quickSort(data,k+1,j); :*TfGV
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} iNf+ -C3
/** P5Ms
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* @param data a;m-Vu!
* @param i yef@V2Z+
* @param j `p9h$d
* @return [-_u{j
*/ m6Q lIdl
private int partition(int[] data, int l, int r,int pivot) { yL&F!+(/Ix
do{ (Ac
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZVE q{x1Zc
SortUtil.swap(data,l,r); ]1rr$f9
} $zq`hI!1
while(l SortUtil.swap(data,l,r); 9)s=%dL
return l; MsCY5g
} 31k.{dnm
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} 9f;\fe
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改进后的快速排序: Q u2W
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package org.rut.util.algorithm.support; /og2+!
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import org.rut.util.algorithm.SortUtil; Ra[{K@
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/** $Ne$s
* @author treeroot D_`MeqF}C
* @since 2006-2-2 tlu-zUsi
* @version 1.0 PoY+Y3
*/ >F6'^9|
public class ImprovedQuickSort implements SortUtil.Sort { pUZe.S>G
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private static int MAX_STACK_SIZE=4096; $/nU0W
private static int THRESHOLD=10; B|gyr4]
/* (non-Javadoc) uG&xtN8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8a|p`)lT
*/ s2riayM9/
public void sort(int[] data) { v7T05
int[] stack=new int[MAX_STACK_SIZE]; #rqLuqw
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int top=-1; !6\{q
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int pivot; #-1 ;
int pivotIndex,l,r; zn&NLsA
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stack[++top]=0; BftW<1,U^
stack[++top]=data.length-1; 3J~Q pw0<
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while(top>0){ i,M<}e1
int j=stack[top--]; ] 7_ f'M1F
int i=stack[top--]; ^k]OQc7q'
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pivotIndex=(i+j)/2; 3|-)]^1O
pivot=data[pivotIndex]; NMM0'tY~
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SortUtil.swap(data,pivotIndex,j); DG}t!
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do{ R8Nr3M9 )
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #GT/Q3{C
SortUtil.swap(data,l,r); u) y6 $
} Zm!T4pL
while(l SortUtil.swap(data,l,r); )8p FPr
SortUtil.swap(data,l,j); fB|rW~!v
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if((l-i)>THRESHOLD){ |E&a3TQW
stack[++top]=i; 3qE2mYK
stack[++top]=l-1; eaCv8zdX
} 1|l'oTAA
if((j-l)>THRESHOLD){ Zsc710_
stack[++top]=l+1; c#|!^gjf
stack[++top]=j; TZT i:\nS
} i[sHPEml(5
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} m!SxX&m"G
file://new InsertSort().sort(data); v#{Sx>lO
insertSort(data); C:xgM'~+
} <xOXuve
/** ({i}EC7{
* @param data QI'ul e
*/ XT>
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private void insertSort(int[] data) { !E8y!|7$
int temp; v\PqhI y"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C|bnUN
} x>d,\{U
} zBtlkBPu
} #S)+eH
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归并排序: /J )MW{;O
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package org.rut.util.algorithm.support; "bZ%1)+
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import org.rut.util.algorithm.SortUtil; -b"mx"'?
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/** Fy37I/#)r&
* @author treeroot c1B<