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<0BMw S8
插入排序: S?*pCJ0
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package org.rut.util.algorithm.support; >J>4g;Y
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import org.rut.util.algorithm.SortUtil; x"0*U9f
/** %toxZ}OP
* @author treeroot s8iJl+Jm
* @since 2006-2-2 kr2V
* @version 1.0 |u,2A1
*/ ~$} `R=
public class InsertSort implements SortUtil.Sort{ :{<( )gfk
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/* (non-Javadoc) OLpE0gZ.|`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v`8dRVN
*/ y)_T!&ze
public void sort(int[] data) { Pda(O;aNU
int temp; &A>Hq/Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PW)XDo7
} vhiP8DQ
} aR30wxW&)
} f.rc~UI?
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} 44_7gOZ
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冒泡排序: xh
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package org.rut.util.algorithm.support; \2,7fy'
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import org.rut.util.algorithm.SortUtil; >AIkkQT
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/** o<2H~2/
* @author treeroot DP`$gd
* @since 2006-2-2 RMU]GCa
* @version 1.0 zMasA
*/ Zn&S7a>7
public class BubbleSort implements SortUtil.Sort{ I8
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/* (non-Javadoc) g,/gApa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |KFRC)g
*/ >en,MT|
public void sort(int[] data) { Yy]^_,r
int temp; D/pc)3Ofe
for(int i=0;i for(int j=data.length-1;j>i;j--){ #MYhKySku
if(data[j] SortUtil.swap(data,j,j-1); T1yJp$yD"
} qXmkeidb&W
} \9*wo9cV
} ImQ?<g8$
} `Cy-*$$
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} M; *f(JY$
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选择排序: n`<YhV
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package org.rut.util.algorithm.support; E?san;Ku
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import org.rut.util.algorithm.SortUtil; </0@7
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/** 3 "fBp
* @author treeroot }Jkz0 JY~
* @since 2006-2-2 $rFLhp}
* @version 1.0 +:@HJXwK
*/ Kc~h
public class SelectionSort implements SortUtil.Sort { a&b75.-
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/* _r0[ z
* (non-Javadoc) 6FuZMasr*
* N3 qtq9{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;A)w:"m
*/ qTFktJZw
public void sort(int[] data) { 3>%oGbo
int temp; 4kZX$ct}
for (int i = 0; i < data.length; i++) { Z>1\|j
int lowIndex = i; m~a'
for (int j = data.length - 1; j > i; j--) { h ,;f6
if (data[j] < data[lowIndex]) { ?h)Z ;,}
lowIndex = j; :^".cs?g
} H(bR@Qok
} Ng=XH"ce~
SortUtil.swap(data,i,lowIndex); D9`J||]E
} OL|_@Fv`A
} B
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} K4938
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Shell排序: 2uw1R;zw
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package org.rut.util.algorithm.support; 3dm lP2
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import org.rut.util.algorithm.SortUtil; JD1IL` ta;
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/** kc#<Gr&Z&
* @author treeroot }!{9tc$<b
* @since 2006-2-2 ];X[x s
* @version 1.0 U_!Wg|
*/ QRbiO
public class ShellSort implements SortUtil.Sort{ LPr34BK
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/* (non-Javadoc) \[</|]'[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =ZdP0l+V=k
*/ 7!.#:+rg5#
public void sort(int[] data) { xW92ZuzSH
for(int i=data.length/2;i>2;i/=2){ ?2h)w=dO
for(int j=0;j insertSort(data,j,i); J+oK:tzt8
} M(>" e*Pi
} z3RD*3b
insertSort(data,0,1); U1zcJl^
} -olD!zKS
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/** -90qG"@
* @param data I75>$"$<
* @param j * N5cC#5`=
* @param i !Yuu~|
*/ 7q_B`$ata
private void insertSort(int[] data, int start, int inc) { n^Co
int temp; uA#uq^3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :ryyo$
} V'[Lqe,y
} ]z5`!e)L
} [k)xn3[
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} v5J%
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快速排序: h>>KH*dQ
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package org.rut.util.algorithm.support; 9X<o8^V
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import org.rut.util.algorithm.SortUtil; 8}9B*m
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/** ;2lKo ="
* @author treeroot 'F3cvpc`
* @since 2006-2-2 mI5BJ
* @version 1.0 QU0FeGtz
*/ <Z^ P8nu
public class QuickSort implements SortUtil.Sort{ [,;h1m ~iX
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/* (non-Javadoc) tuZA q;X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M6yzqAh
*/ [QC<u1/"K
public void sort(int[] data) { x4@v$phyH
quickSort(data,0,data.length-1); d1MY>zq
} cWG>w6FI
private void quickSort(int[] data,int i,int j){ VRr_s:CWK
int pivotIndex=(i+j)/2; h>jLhj<07W
file://swap wNzALfS
SortUtil.swap(data,pivotIndex,j); tu.Tvtudzj
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int k=partition(data,i-1,j,data[j]); RY8Ot2DWi
SortUtil.swap(data,k,j); 46U?aHKW@|
if((k-i)>1) quickSort(data,i,k-1); QuEfV ?)_4
if((j-k)>1) quickSort(data,k+1,j); CUz1q*):
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} $"VgNynq
/** O3H~|R+^
* @param data $:|z{p
* @param i ldEZ _g^
* @param j
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* @return @y3u'Y,B
*/ AawK/tfs
private int partition(int[] data, int l, int r,int pivot) { H"~]|@g-p
do{ EbTjBq
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y^utMH
SortUtil.swap(data,l,r); XQI.z7F
} lHg&|S&J
while(l SortUtil.swap(data,l,r); {R`,iWV
return l; Ml)0z&jQX
} 0MV^-M
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} d=?Kk4Ag
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改进后的快速排序:
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package org.rut.util.algorithm.support; Y\CR*om!W
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import org.rut.util.algorithm.SortUtil; T(<
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/** P<Wtv;Z1Z
* @author treeroot g[Tl#X7F
* @since 2006-2-2 ] qT\z<}
* @version 1.0 N#C"@,}Y
*/ eVRFb#EU0e
public class ImprovedQuickSort implements SortUtil.Sort { `jl 1Q,~2r
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private static int MAX_STACK_SIZE=4096; Z_%9LxZlyj
private static int THRESHOLD=10; }zA
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/* (non-Javadoc) K6vF}A|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k-o(Q"[ '
*/ x2@Q5|a
public void sort(int[] data) { ;4E.Yr*
int[] stack=new int[MAX_STACK_SIZE]; q]1HCWde
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int top=-1; wI\
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int pivot; MjGeH>c
int pivotIndex,l,r; ["5Z=4
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stack[++top]=0; QfLDyJv`e
stack[++top]=data.length-1; &4g]#A >@
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while(top>0){ desrKnY
int j=stack[top--]; eRI'pi[#.
int i=stack[top--]; K YSyz)M}
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pivotIndex=(i+j)/2; u!NY@$Wc
pivot=data[pivotIndex]; ([Gb]0
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SortUtil.swap(data,pivotIndex,j); A6?+$ Hr
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file://partition +9 Uo<6}
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r=j; KY1(yni&8[
do{ D%tcYI(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (%\vp**F
SortUtil.swap(data,l,r); )v1y
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} SONv]));
while(l SortUtil.swap(data,l,r); \ C^fi}/]
SortUtil.swap(data,l,j); n|G x29E
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if((l-i)>THRESHOLD){ /h/f&3'h
stack[++top]=i; +`;YK7o
stack[++top]=l-1; u}zCcWP|L
} MMyVm"w
if((j-l)>THRESHOLD){ eB]cPo4gW
stack[++top]=l+1; Mq!vu!
stack[++top]=j; :>@6\
} W u4` 3
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} }N^A
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file://new InsertSort().sort(data); Y)X
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insertSort(data); vr /O%mDp
} )qgcz<p?W
/** ^qn,b/>L
* @param data 3~Qvp )~
*/ ?Cg",k '
private void insertSort(int[] data) { \KBE+yj
int temp; ~/R,oQ1!g}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O8&