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。 MN\HDKN
插入排序: ]s<[D$ <,
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package org.rut.util.algorithm.support; 2LF/H$]o5
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import org.rut.util.algorithm.SortUtil; JMC. w!
/** fp`;U_-&0
* @author treeroot ;ub;lh 3
* @since 2006-2-2 V<GHpFi0
* @version 1.0 X
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*/ ZOh`(})hy
public class InsertSort implements SortUtil.Sort{ QIG$z?
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/* (non-Javadoc) =;Au<|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `dq,>HdW
*/ MTuV^0%jD
public void sort(int[] data) { p{r}?a
int temp; rC5
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i@*{27t
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冒泡排序: ]cHgleHQ
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package org.rut.util.algorithm.support; 9X}10u:
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import org.rut.util.algorithm.SortUtil; |d{PA.@33
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/** E(>=rD /+
* @author treeroot P3x8UR=fS
* @since 2006-2-2 gb[5&>(#
* @version 1.0 "L IF.)
*/ +%<(E
public class BubbleSort implements SortUtil.Sort{ mE+*)gb:Rd
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/* (non-Javadoc) +}Dw3;W}m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ 2M_\Q`NY
*/ 5-:?&|JK;
public void sort(int[] data) { rBQ _iB_
int temp; 0q()|y?}
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^O?/yV?4c
if(data[j] SortUtil.swap(data,j,j-1); !|S(Ms
} &*M!lxDN
} =W(Q34
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} (S>C#A=E\
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选择排序: B-*+r`@Bd
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package org.rut.util.algorithm.support; ^UP`%egR
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import org.rut.util.algorithm.SortUtil; P78g/p T
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/** p_RsU`[
* @author treeroot >^u2cAi3[
* @since 2006-2-2 Snj'y,p[
* @version 1.0 >FeX<L
*/ b6,iZ+]
public class SelectionSort implements SortUtil.Sort { Z@4Arfl
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/* `+]Qz =}
* (non-Javadoc) (p" %O
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OIGY`
*/ Ogqj?]2QC
public void sort(int[] data) { j`{?OYD
int temp; Y`~Ut:fZ
for (int i = 0; i < data.length; i++) { HY56"LZ$(}
int lowIndex = i; zYH&i6nj
for (int j = data.length - 1; j > i; j--) { sA+ }TNhq
if (data[j] < data[lowIndex]) { /:cd\A}
lowIndex = j; P\E<9*V
} ]%;:7?5l
} 9)l$ aBa
SortUtil.swap(data,i,lowIndex); hZm"t/aKc
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} U7?;UCmX
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} ^
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Shell排序: 'NWfBJm
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package org.rut.util.algorithm.support; \;,_S+Fz8
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import org.rut.util.algorithm.SortUtil; bL0yuAwF2
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/** 2R[:]-b
* @author treeroot wo3d#=
* @since 2006-2-2 eb?x9h
* @version 1.0 &sl0W-;0
*/ w2?3wrP3
public class ShellSort implements SortUtil.Sort{ >R'F,
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/* (non-Javadoc) lt/1f{v[:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1y:-N6
*/ W8G,=d}6
public void sort(int[] data) { FUiRTRIYe
for(int i=data.length/2;i>2;i/=2){ Pd8![Z3
for(int j=0;j insertSort(data,j,i); 8=!D$t\3
} wi!?BCseq
} ?al'F q
insertSort(data,0,1); 4VHn \
} ><4<yj1
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/** ?w$kue
* @param data T~-ycVc
* @param j ,<.V7(|t)
* @param i @JGP,445
*/ 49eD1h3'X[
private void insertSort(int[] data, int start, int inc) { |44Ploz2b
int temp; M$wC=b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R7%#U`Q^A
} 91/Q9xY
} \UA[
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} n3WlZ!$
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快速排序: r-,%2y?
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package org.rut.util.algorithm.support; 6 W/`07'
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import org.rut.util.algorithm.SortUtil; EAUEQk?9
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/** `Gs9Xmc|
* @author treeroot ?4YGT
* @since 2006-2-2 a,,ex i
* @version 1.0 juJklSD
*/ -abt:or
public class QuickSort implements SortUtil.Sort{ *tA1az-jO
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/* (non-Javadoc) :@Pl pFK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q3'llOx
*/ !t"4!3
public void sort(int[] data) { Z{*\S0^ST
quickSort(data,0,data.length-1); & l<.X
} YP oSRA L
private void quickSort(int[] data,int i,int j){ aj='b.2)
int pivotIndex=(i+j)/2; &$+AXzn
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SortUtil.swap(data,pivotIndex,j); x>K Or,f
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int k=partition(data,i-1,j,data[j]); KYm0@O>;
SortUtil.swap(data,k,j); l$KA)xbI
if((k-i)>1) quickSort(data,i,k-1); <)Dj9' _J
if((j-k)>1) quickSort(data,k+1,j); X0HZH?V+
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} 70d 1ReQ
/** [g|_~h
* @param data :
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* @param i 8S
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* @param j "x0^#AVg
* @return b/K PaNv
*/ H*n-_{h"t
private int partition(int[] data, int l, int r,int pivot) { { l/U6](
do{ `7E;VL^Y1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9cbd~mM{
SortUtil.swap(data,l,r); h,:m~0gmj
} ]h`&&B qt
while(l SortUtil.swap(data,l,r); >58YjLXb
return l; [>I<#_^~
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} K8|r&`X0
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改进后的快速排序: XSB"{H>&
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package org.rut.util.algorithm.support; $S6`}3
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import org.rut.util.algorithm.SortUtil; 7~h<$8Y(T
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/** -m zIT4
* @author treeroot u{cW:
* @since 2006-2-2 QT5TE: D
* @version 1.0 P= BZ+6DS
*/ ?>:g?.+
public class ImprovedQuickSort implements SortUtil.Sort { U+jOTq8 M
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private static int MAX_STACK_SIZE=4096; e(&v"}Ef`
private static int THRESHOLD=10; Pbn*_/H
/* (non-Javadoc) \!X8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VBlYvZ;$*
*/ z|J_b"u4
public void sort(int[] data) { HVCe;eI
int[] stack=new int[MAX_STACK_SIZE]; eb\K "ec"
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int top=-1; L[fiU0^o
int pivot; 9<?M8_
int pivotIndex,l,r; oSKXt}sh
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stack[++top]=0; 9rX&uP)j^#
stack[++top]=data.length-1; $99n&t$Y
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while(top>0){
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int j=stack[top--]; 5V~oIL
int i=stack[top--]; C
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pivotIndex=(i+j)/2; 7aRi5
pivot=data[pivotIndex]; p`dU2gV
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SortUtil.swap(data,pivotIndex,j); Y] _ruDIW
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file://partition NiEUW.0
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do{ +o{R _
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M/'sl;
SortUtil.swap(data,l,r); U}[d_f
} bH9kj/q\b
while(l SortUtil.swap(data,l,r); |s(FLF -
SortUtil.swap(data,l,j); )EuvRLo{S7
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if((l-i)>THRESHOLD){ {]!mrAjD
stack[++top]=i; f}ji?p
stack[++top]=l-1; \)904W5R
} 2]jn '4
if((j-l)>THRESHOLD){ Sv#XIMw{,
stack[++top]=l+1; SM#]H-3
stack[++top]=j; !Pvf;rNI1T
} gfd"v
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} *%NT~C
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file://new InsertSort().sort(data); /t57!&
insertSort(data); R?|.pq/Ln
} /SR*W5#s
/** _Ey9G
* @param data VA>35w
*/ %N6A+5H
private void insertSort(int[] data) { ~
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int temp; xh,qNnGGi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^zmG0EH,
} <c-=3}=U\
} %@aSe2B
} "Yv_B3p
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} ::lKL
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归并排序: a2O75 kWnm
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package org.rut.util.algorithm.support; LgU_LcoM*
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import org.rut.util.algorithm.SortUtil; (zYtNLoFx
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