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。 fB,_9K5i
插入排序: i@'dH3-kO
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package org.rut.util.algorithm.support; 6H|S;K+
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import org.rut.util.algorithm.SortUtil; sR8"3b<qA
/** 3gf1ownC
* @author treeroot | f##5fB
* @since 2006-2-2 %
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* @version 1.0 b`_Q8 J
*/ paMa+jhQQ
public class InsertSort implements SortUtil.Sort{ FgO)DQm
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/* (non-Javadoc) LgYq.>Nl9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [00m/fT6
*/ -$@h1Y
public void sort(int[] data) { .|=\z9_7S8
int temp; E} .^kc[(4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jh$='G n
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冒泡排序: cj@koA'
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package org.rut.util.algorithm.support; |nF 8gh~}
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import org.rut.util.algorithm.SortUtil; .sA.C]f
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/** hzC>~Ub5
* @author treeroot PRT +mT
* @since 2006-2-2 *$*ce|V5
* @version 1.0 Vz[C=_m
*/ M:V_/@W.
public class BubbleSort implements SortUtil.Sort{ @|)Z"m7
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/* (non-Javadoc) y_9Ds>p!T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6zn5UW#q
*/ _aMF?Pj~m
public void sort(int[] data) { GJUL$9
int temp; FgI3
for(int i=0;i for(int j=data.length-1;j>i;j--){ y!%CffF2
if(data[j] SortUtil.swap(data,j,j-1); 1nOCQ\$l
} bN88ua}k{
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} GH
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选择排序: |D.ND%K&
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package org.rut.util.algorithm.support; WjjB<YKzF
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import org.rut.util.algorithm.SortUtil; %K
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/** 4`R(?
* @author treeroot _tXlF;
* @since 2006-2-2 %%wNZ{
* @version 1.0 M@ZI\
*/ KG5>]_GH
public class SelectionSort implements SortUtil.Sort { ]s748+
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/* b u"!jHPB
* (non-Javadoc) 0|b>I!_"g
* &VcV$8k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]+$?u&0?w
*/ W}1
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public void sort(int[] data) { bJ;'`sw1
int temp; ;UP $yM;
for (int i = 0; i < data.length; i++) { E.>4C[O
int lowIndex = i; 2Hv+W-6v
for (int j = data.length - 1; j > i; j--) { yiI1x*^
if (data[j] < data[lowIndex]) { >"<Wjr8W!$
lowIndex = j; 3yXY.>'
} k$7Jj-+~
} {}Za_(Y,]
SortUtil.swap(data,i,lowIndex); s|ITsz0,td
} [c06 N$:
} xP,hTE
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} FsryEHz
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Shell排序: I`p;F!s
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package org.rut.util.algorithm.support; 5 u0HI
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import org.rut.util.algorithm.SortUtil; ;({W#Wa
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/** @ry_nKr9
* @author treeroot ]g&TKm
* @since 2006-2-2 y^%y<~f
* @version 1.0 IaXeRq?<
*/ .6'qoo_N
public class ShellSort implements SortUtil.Sort{ tnG# IU
*
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/* (non-Javadoc) 6K<K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tu 7QCr5*
*/ v}Fr@0%
public void sort(int[] data) { JO<wU
for(int i=data.length/2;i>2;i/=2){ "w.3Q96r
for(int j=0;j insertSort(data,j,i); tNX|U:Y*
} t<viX's
} IB7E}56l
insertSort(data,0,1); # Vha7
} I.k
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/** 1y4
* @param data 4_cqT/
* @param j 0_t`%l=
* @param i LE>]8[f6S
*/ IobD3:D8W
private void insertSort(int[] data, int start, int inc) { `^y7f
int temp; ][h}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
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快速排序: g'qa}/X
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package org.rut.util.algorithm.support; cpJ|w3xB
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import org.rut.util.algorithm.SortUtil; t1y4 7fX6
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/** 0=E]cQwh
* @author treeroot $H>W|9Kg,
* @since 2006-2-2 *w&Y$8c(
* @version 1.0 EJNU761
*/ fsWTF<Y
public class QuickSort implements SortUtil.Sort{ 'CkIz"Wd
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/* (non-Javadoc) ITT@,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OH(waKq2I
*/ +&2%+[nBZ
public void sort(int[] data) { %n: k#
quickSort(data,0,data.length-1); e;}7G
} q(2'\ _`u
private void quickSort(int[] data,int i,int j){ KNIn:K^/
int pivotIndex=(i+j)/2; 5, 6"&vU,
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SortUtil.swap(data,pivotIndex,j); ah+iZ}E%
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int k=partition(data,i-1,j,data[j]); X*@dj_,
SortUtil.swap(data,k,j); _t #k,;
if((k-i)>1) quickSort(data,i,k-1); 9c :cw
if((j-k)>1) quickSort(data,k+1,j); ` v@m-j6
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} Y#P%6Fy
/** @7j AL -
* @param data `,TzQ
* @param i VZmLS 4E
* @param j ByNn
* @return 9e,0\J
*/ JB[~;nLlC
private int partition(int[] data, int l, int r,int pivot) { czRFMYE
do{ hp-<2i^"!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y^EcQzLw
SortUtil.swap(data,l,r); r:ptQo`1-
} >_"an~Ss
while(l SortUtil.swap(data,l,r); @8r pD"x
return l; S2VA{9:m
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}
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改进后的快速排序: !58@pLJw
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package org.rut.util.algorithm.support; ^N{h3b8
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import org.rut.util.algorithm.SortUtil; &H/'rd0M
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/** GM f
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* @author treeroot A!WKnb_`
* @since 2006-2-2 z !rL
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* @version 1.0 * kDC liL
*/ Cl8Cg~2
public class ImprovedQuickSort implements SortUtil.Sort { fN^8{w/O
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private static int MAX_STACK_SIZE=4096; P%&0]FCx
private static int THRESHOLD=10;
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/* (non-Javadoc) CxO ob1@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dufu|BL|}
*/ Ata:^qI
public void sort(int[] data) { :hk5 .[
int[] stack=new int[MAX_STACK_SIZE]; Y;^l%ePuW
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int top=-1; }" %?et(
int pivot; EGU
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int pivotIndex,l,r; X296tA>C`
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stack[++top]=0;
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stack[++top]=data.length-1; hwBfdZ
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while(top>0){ }DfshZ0QM
int j=stack[top--]; e9 5Lo+:f
int i=stack[top--]; O-GJ-
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pivotIndex=(i+j)/2; /saIs%(fU
pivot=data[pivotIndex]; s.N/2F&*W
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SortUtil.swap(data,pivotIndex,j); zFws:_ i
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file://partition j2.|ln"!
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do{ ju8q?Nyhs
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bj0G5dc=
SortUtil.swap(data,l,r); A _
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} 0c'<3@39k|
while(l SortUtil.swap(data,l,r); %wvdn
SortUtil.swap(data,l,j); yyRiP|hJ
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if((l-i)>THRESHOLD){ g:D>.lKd
stack[++top]=i; _w(7u(Z
stack[++top]=l-1; R0]1xGz
} a# y;dK
if((j-l)>THRESHOLD){ l%pu HZ)t
stack[++top]=l+1; 5Y'qaIFR
stack[++top]=j; ~f1%8z
} lVR~Bh
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} E=CsIK
file://new InsertSort().sort(data); E+R1 !.
insertSort(data); z.9U}F
} mD0f<gJ1
/** m=A(NKZ
* @param data >G*eNn
*/ foF({4q7b^
private void insertSort(int[] data) { %.Fi4}+O
int temp; i,E{f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H*&f: