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。 {\kDu#18Ld
插入排序: _LLE~nUK"/
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package org.rut.util.algorithm.support; LESF*rh=
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import org.rut.util.algorithm.SortUtil; @"`{Sh`Y$
/** hF-X8$[
* @author treeroot v?h8-yed
* @since 2006-2-2
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* @version 1.0 I`}x 9t
*/ ~wd~57i@
public class InsertSort implements SortUtil.Sort{ R(HW0@R@w
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/* (non-Javadoc) hN_,Vyf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D 3}e{J8
*/ |Vc:o_n7
public void sort(int[] data) { u=6{P(5$j
int temp; :6frx=<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z(beT e
}
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} q8vRUlf
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} @0rwvyE=+3
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冒泡排序: a<{+
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package org.rut.util.algorithm.support; ;AgXl%Q
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import org.rut.util.algorithm.SortUtil; J Y@x.?N5$
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/** Gex%~';+q
* @author treeroot (
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* @since 2006-2-2 ]6EXaf#
* @version 1.0 4kQL\Ld#E%
*/ dDla?)F
public class BubbleSort implements SortUtil.Sort{ w~=@+U$f
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/* (non-Javadoc) %Tv^BYQAZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [KjL`
*/ @g'SH:}
public void sort(int[] data) { @y`7csbp
int temp; =9vmRh?8
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~0@+8%^>;
if(data[j] SortUtil.swap(data,j,j-1); T1r^.;I:
} Fh$Xcz~i
} EYF]&+ 9
} kT6EHuB
} })}-K7v1+
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选择排序: *S4*FH;8
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package org.rut.util.algorithm.support; 9}6^5f?|
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import org.rut.util.algorithm.SortUtil; yasKU6^R'
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/** ocT.2/~d
* @author treeroot YG6Kvc6T
* @since 2006-2-2 (eAh8^)
* @version 1.0 UZ+FV;<
*/ Bx32pY
public class SelectionSort implements SortUtil.Sort { JMq00_
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/* ~8G<Nw4*\
* (non-Javadoc) L3-tD67oa
* :S5B3S@|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D;al(q
*/ vMOit,{
public void sort(int[] data) { 1JoRP~mMxa
int temp; #5x[Z[m
for (int i = 0; i < data.length; i++) { N;6WfdA-
int lowIndex = i; {?9s~{Dl
for (int j = data.length - 1; j > i; j--) { ! G+/8Q^
if (data[j] < data[lowIndex]) { Q!VPk~~(
lowIndex = j; xl$#00|y
} 1(**JTe
} i
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SortUtil.swap(data,i,lowIndex);
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} ,&IBj6%Y
} nP >*0Fq
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} :#QYwb~
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Shell排序: UC34AKm
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package org.rut.util.algorithm.support; |0mVK`
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import org.rut.util.algorithm.SortUtil; 5E/z.5 q
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/** O`hOVHDQ
* @author treeroot jo4*,B1x
* @since 2006-2-2 @M-+-6+
* @version 1.0 2|)3Ly9
*/ ~a5p_x P
public class ShellSort implements SortUtil.Sort{ [EJ[Gg0m
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/* (non-Javadoc) _azg
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /0mbG!Ac
*/ +BRmqJ3
public void sort(int[] data) { HX{O@
for(int i=data.length/2;i>2;i/=2){ >]k'3|vV
for(int j=0;j insertSort(data,j,i); yjVPaEu]aU
} <"@~
} [2!K 6
insertSort(data,0,1); 2c
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} %jY/jp=R
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/** j#b?P=|l
* @param data :hG?} [-2
* @param j 'Z+~G
* @param i u5EHzoq
*/ tw]RH(g+#
private void insertSort(int[] data, int start, int inc) { ?s("@dz_
int temp; d"|XN{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >'@yq
} gaC^<\J
} {@9y%lmrh
} 0=;jGh}|i
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} B8_w3;x
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快速排序: Ak$ghb
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package org.rut.util.algorithm.support; jl=<Q.Mm7
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import org.rut.util.algorithm.SortUtil; /GNRu
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/** A:EF#2)g
* @author treeroot DA@YjebP'
* @since 2006-2-2 PY.c$)az>
* @version 1.0 $Tt@Xu
*/ \c+)Y}:D
public class QuickSort implements SortUtil.Sort{ IBWUeB:b
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/* (non-Javadoc) n< [np;\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %,GY&hTw
*/ SU9#Y|I
public void sort(int[] data) { Pn5@7~
quickSort(data,0,data.length-1); lC+p2OG^[
} tgDmHxB]0
private void quickSort(int[] data,int i,int j){ T"'"T]^
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int pivotIndex=(i+j)/2; `/<KDd:_t
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SortUtil.swap(data,pivotIndex,j); oq=D9
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int k=partition(data,i-1,j,data[j]); 4em7PmT
SortUtil.swap(data,k,j); :*e0Z2=
if((k-i)>1) quickSort(data,i,k-1); 8f% @
if((j-k)>1) quickSort(data,k+1,j); =V1k'XJ
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} ]YZ+/:#U7
/** _tL*sA>[~)
* @param data > >wbyj8
* @param i ;"&^ckP
* @param j fM_aDSRa!H
* @return
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*/ fEdQR->
private int partition(int[] data, int l, int r,int pivot) { FZnkQ
do{ *L/_ v
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YcGSZ0vQ
SortUtil.swap(data,l,r); LGPy>,!
} t(CdoE,6
while(l SortUtil.swap(data,l,r); Lm9y!>1"O
return l; $GUSTV
} XZA3TZ
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} %$I\\qq>{
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改进后的快速排序: O%A:2Y79
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package org.rut.util.algorithm.support; ~o%|#-S
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import org.rut.util.algorithm.SortUtil; h/`OG>./
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/** Vy{=Y(cpF2
* @author treeroot
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* @since 2006-2-2 ?b:J6(-
* @version 1.0 {Zjnf6d]
*/ AShJtxxa
public class ImprovedQuickSort implements SortUtil.Sort { tz&=v,_jc
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private static int MAX_STACK_SIZE=4096; }?#<)|_5
private static int THRESHOLD=10; \rcbt6H
/* (non-Javadoc) 6J6MR<5'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {LY$
*/ :HRJ49a
public void sort(int[] data) { XY1NTo.=
int[] stack=new int[MAX_STACK_SIZE]; on(F8%]zE
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int top=-1; ?.IT!M}DR
int pivot; y)|Q~8r
int pivotIndex,l,r; E*7B5
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stack[++top]=0; `l1{BU
stack[++top]=data.length-1; KB7CO:
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while(top>0){ 2<yi8O\
int j=stack[top--]; _C&2-tnp
int i=stack[top--]; -f z
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pivotIndex=(i+j)/2; }-)2CEj3L%
pivot=data[pivotIndex]; [U]*OQH`e
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SortUtil.swap(data,pivotIndex,j); mmAikT#k
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file://partition ,`G8U/
l=i-1; $91c9z;f^
r=j;
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do{ AR]y p{NS
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); II)\rVP5
SortUtil.swap(data,l,r); PLKp<kg
} IBf&'/ 8\
while(l SortUtil.swap(data,l,r); rv&(yA
SortUtil.swap(data,l,j); S$+vRX7
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if((l-i)>THRESHOLD){ wZh&w<l'
stack[++top]=i; @xmO\
stack[++top]=l-1; ['sj'3cW-
} qWHH%
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if((j-l)>THRESHOLD){ /0d_{Y+9
stack[++top]=l+1; vO%n~l=
stack[++top]=j; p8oOm>B96n
} x$J1%K*
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}
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file://new InsertSort().sort(data); 92WvD
insertSort(data); :qc@S&v@]
} U GQ{QH
/** {%9)l,
* @param data vmvk
*/ m7zen530
private void insertSort(int[] data) { rF2`4j&!
int temp; Ps+0qqT*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tjBs>w
} I0(BKMp&