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。 L%8"d6
插入排序: P<(mH=K
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package org.rut.util.algorithm.support; iLI]aZ
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import org.rut.util.algorithm.SortUtil; J~Ph)|AiS
/** >WEg8'#O
* @author treeroot nagto^5X
* @since 2006-2-2 vVf!XZF
* @version 1.0 )/pPY
*/ 5(|ud)v
public class InsertSort implements SortUtil.Sort{ HWU{521
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/* (non-Javadoc) Oxvw`a#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A&7jE:Ew
*/ `&6]P :_qp
public void sort(int[] data) { puyL(ohem
int temp; j w462h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S\rfR N
} ;lEiOF+d
} +=8Po'E^!d
} x}[` -
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} NNdS:(
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冒泡排序: Yt'o#"R)
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package org.rut.util.algorithm.support; &ivIv[LV
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import org.rut.util.algorithm.SortUtil; N{yZk"fq:6
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/** 8UcT?Zp
* @author treeroot |Wgab5D>V
* @since 2006-2-2 ?C{N0?[P-
* @version 1.0 ]rm=F]W/n
*/ # 0(\s@r.
public class BubbleSort implements SortUtil.Sort{ }>:X|4]
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/* (non-Javadoc) %G&v@R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ne EV!V8
*/ fpi6pcof
public void sort(int[] data) { Q!{Dw:7
int temp; )1,&YJM*6l
for(int i=0;i for(int j=data.length-1;j>i;j--){ cOgtBEhn
if(data[j] SortUtil.swap(data,j,j-1); iy"Kg]
} 'W*F[U*&HP
} rY= #^S
} J"MJVMo$T
} ZIl<y{
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} f+Go 8Lg=M
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选择排序: "lZ<bG
jFv<]D%A[
package org.rut.util.algorithm.support; Uy:.m
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import org.rut.util.algorithm.SortUtil; hdL2`5RFF
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/** n}?G!ySg
* @author treeroot 7A6sSfPUy
* @since 2006-2-2 }b(e
* @version 1.0 J5T#}!f
*/ BxU1Q&
public class SelectionSort implements SortUtil.Sort { x TZ5q*Hqx
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/* pAuwSn#i
* (non-Javadoc) 5XHkRcESZ
* {LDb*'5Cy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h_L '_*
*/ cFvx*n
public void sort(int[] data) { #VE$C3<
int temp; {
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for (int i = 0; i < data.length; i++) { O2dgdtm
int lowIndex = i; :bDA<B6bb
for (int j = data.length - 1; j > i; j--) { S/;Y4o
if (data[j] < data[lowIndex]) { 4vS!99v)
lowIndex = j; >6 #\1/RP
} ]Dg0@Y
} bn35f<+
SortUtil.swap(data,i,lowIndex); M(uB
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} Gf\_WNrSE+
} $O8V!R*
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} |Ze}bM=N
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Shell排序: !e `=UZe1
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package org.rut.util.algorithm.support; 9A(K_d-!H
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import org.rut.util.algorithm.SortUtil; UD`Z;F
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/** 4?&a?*M
* @author treeroot M3 u8NRd5|
* @since 2006-2-2 5I,X#}K[
* @version 1.0 ew$Z5N:
*/ x?'%
public class ShellSort implements SortUtil.Sort{ ;hJ*u
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/* (non-Javadoc) *XOKH+_u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ="R6YL
*/ ie5ijkxZ(
public void sort(int[] data) { EIQy?ig86
for(int i=data.length/2;i>2;i/=2){ nn:pf1
for(int j=0;j insertSort(data,j,i); dRa<,@1"
} gDNW~?/
} 66^t[[
insertSort(data,0,1); ^)l@7XxD
} @|Bp'`j%J
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/** )\Q|}JV
* @param data H>iZVE
* @param j nV*sdSt
* @param i iQC&d_#
*/ *8H;KGe=
private void insertSort(int[] data, int start, int inc) { 9z/_`Xd_
int temp; 3uG5b8?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L.[uMuUa
} 7`@?3?
} 0\nhg5]?
} 5yi q#
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} SkRQFm0a~
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快速排序: Ec*7n6~9
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package org.rut.util.algorithm.support; WC*:\:mh
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import org.rut.util.algorithm.SortUtil; G%jJ>T4
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/** g
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* @author treeroot D@W3;T^
* @since 2006-2-2 nvVsO>2{ o
* @version 1.0 3#9r4;&
*/ @~G`~8
public class QuickSort implements SortUtil.Sort{ HCkqh4
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/* (non-Javadoc) *"{Z?< 3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \1C!,C
*/ bk9~63tN+>
public void sort(int[] data) { .hNw1~Fj
quickSort(data,0,data.length-1); N:jiZ)
} n12c075
private void quickSort(int[] data,int i,int j){ P\6T4s
int pivotIndex=(i+j)/2; ^GaPpm
file://swap ~.`r(
SortUtil.swap(data,pivotIndex,j); Ny7=-]N4{"
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int k=partition(data,i-1,j,data[j]); [mzF)/[_2
SortUtil.swap(data,k,j); Le:mMd= G
if((k-i)>1) quickSort(data,i,k-1); qq3Qd,$Z
if((j-k)>1) quickSort(data,k+1,j); R&_\&:4f
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} ]l7\Zq
/** )u/
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* @param data AaC1||?R
* @param i NV(4wlh)y
* @param j eEGcio}_I9
* @return ,W8Iabi^
*/ IBNQmVRrI
private int partition(int[] data, int l, int r,int pivot) { TIWLp
do{ f%[ukMj&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o]jP3
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SortUtil.swap(data,l,r); UMi`u6#
} gIM'bA<~
while(l SortUtil.swap(data,l,r); ?[1qC=[Z<
return l; 15T[J%7f
} 9AddF*B
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}
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改进后的快速排序: 9f%y)[ \
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package org.rut.util.algorithm.support; ! }?jCp p
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import org.rut.util.algorithm.SortUtil; Sc$8tLDLj
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/** FO>( QLlH
* @author treeroot H?(SSL
* @since 2006-2-2 KPd C9H
* @version 1.0 "zIq)PY
*/ KW7?: x
public class ImprovedQuickSort implements SortUtil.Sort { ZMMo6;
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private static int MAX_STACK_SIZE=4096; bb/?02*)H
private static int THRESHOLD=10; ytV)!xe
/* (non-Javadoc) qM!f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |}p}`Mb)a
*/ ~& WN)r'4y
public void sort(int[] data) { ?-:: {2O)
int[] stack=new int[MAX_STACK_SIZE]; *:tjxC
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int top=-1; 46P6Bwobh
int pivot; 69j~?w)^
int pivotIndex,l,r; 1mVVPt^6
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stack[++top]=0; u6Qf*_- K
stack[++top]=data.length-1; oSA*~ N:
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while(top>0){ V>j hGf
int j=stack[top--]; PSf5p\<5
int i=stack[top--]; 71/ m.w
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pivotIndex=(i+j)/2; 'uf\.F
pivot=data[pivotIndex]; q&Tn>B
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SortUtil.swap(data,pivotIndex,j); =Wk/q_.
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file://partition zIm_7\e
l=i-1;
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r=j; N>pmhskN?
do{ H1%[\X?=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g;!@DVF$
SortUtil.swap(data,l,r); Ph+X{|
} z(`
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while(l SortUtil.swap(data,l,r); bA<AG*
SortUtil.swap(data,l,j); -?YT Q@ W
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if((l-i)>THRESHOLD){ b~r{J5x@
stack[++top]=i; pba8=Z
stack[++top]=l-1; {`H<=h__
} E R]sDV
if((j-l)>THRESHOLD){ pPyvR;NJ
stack[++top]=l+1; 7{An@hNh
stack[++top]=j; ]Q4PbW
} lTr*'fX
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} ]KXMGH_
file://new InsertSort().sort(data); 8L-4}!~C
insertSort(data); "<w2v'6S
} M .)}e7
/** ~3bZ+*H>
* @param data h^A3 0f_x
*/ 2\nN4WL
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private void insertSort(int[] data) { )jlP
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int temp; x9)aBB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fzS`dL5,W
} mGe|8In
} GjeUUmr
} Cx+WLD
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