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。 N2J!7uoQ
插入排序: IA`
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package org.rut.util.algorithm.support; /]&1 XT?
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import org.rut.util.algorithm.SortUtil; Yl])Q|2I
/** tm?
* @author treeroot iX p8u**
* @since 2006-2-2 ]S ,GHPEN
* @version 1.0 -NeF6
*/ :Ej)AfS
public class InsertSort implements SortUtil.Sort{ EMbsKG
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/* (non-Javadoc) c 3dZ1v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +i =78
*/ m(Ynl=c
public void sort(int[] data) { [4yQ-L)]e
int temp; a\E]ueVD2j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l/LUwDI{
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} Nl _Jp:8s
}
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冒泡排序: !ZW0yCwLQ
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package org.rut.util.algorithm.support; [bXZPIz;j
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import org.rut.util.algorithm.SortUtil; sx\7Z#|
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/** tEj5WEnNE8
* @author treeroot n>UvRn.7kz
* @since 2006-2-2 7Wu2gky3
* @version 1.0 =@>&kU%$&
*/ \
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public class BubbleSort implements SortUtil.Sort{ B?'ti{p
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/* (non-Javadoc) <T]kpP<lC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )FLpWE"e-
*/ ;r']"JmF,
public void sort(int[] data) { O"Q=66.CR
int temp; [tN/}_]
for(int i=0;i for(int j=data.length-1;j>i;j--){ WyETg!b[
if(data[j] SortUtil.swap(data,j,j-1); CiSG=obw
} xj<SnrrC]u
} f
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} P.Bk-#}$
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选择排序: ",m5}mk:4
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package org.rut.util.algorithm.support; r[~$
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import org.rut.util.algorithm.SortUtil; sBwgl9
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/** `g~-5Z~J
* @author treeroot ITV}f#
* @since 2006-2-2 eu=2a>
* @version 1.0 ~nQb;Bdh%
*/ ra1hdf0"
public class SelectionSort implements SortUtil.Sort { W=*\4B]
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/* n|.;g!QDA
* (non-Javadoc) C0M{zGT>}
* ]{hfM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .+<K-'&=
*/ {`LV{!
public void sort(int[] data) { f8lww)^,v
int temp;
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for (int i = 0; i < data.length; i++) { 79v&6Io
int lowIndex = i; vuf|2!kh/
for (int j = data.length - 1; j > i; j--) {
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if (data[j] < data[lowIndex]) { P_gQ-pF.
lowIndex = j; VWi-)
} |8B[yr.b
} {~SR>I3sv
SortUtil.swap(data,i,lowIndex); y[cAU:P?
} ~EBZlTN
} *K;~V
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Shell排序: A{QS+fa/
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package org.rut.util.algorithm.support; '&Ku Ba
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import org.rut.util.algorithm.SortUtil; JF7T1T
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/** epnDvz\
* @author treeroot O
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* @since 2006-2-2 .jCdJ
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* @version 1.0 4ZIXG,@mZJ
*/ &}]Wbk4:
public class ShellSort implements SortUtil.Sort{ )JPcSy*
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/* (non-Javadoc) K"#}R<k8:A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zri <'W
*/ wv<"W@& 9
public void sort(int[] data) { XxIU B(.QI
for(int i=data.length/2;i>2;i/=2){ \h-[u%
for(int j=0;j insertSort(data,j,i); wcO+P7g
} ,Y*f]
} SG~R!kN}Q
insertSort(data,0,1); fKfi
} =<g\B?s]
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/** 7G/"!ePW6`
* @param data pO^
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* @param j (<ejJPWT
* @param i U5klVl
*/ R:E`
private void insertSort(int[] data, int start, int inc) { O/Fzw^
int temp; m*'#`v Ibb
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,=mn*
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快速排序: 0iYe>u
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package org.rut.util.algorithm.support; n8?gZ` W
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import org.rut.util.algorithm.SortUtil; GB-=DC6
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/** ,Zdc
* @author treeroot AOTI&v
* @since 2006-2-2 Ei#"r\q j_
* @version 1.0 m,pDjf
*/ $oNkE
public class QuickSort implements SortUtil.Sort{ h\1_$ac
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/* (non-Javadoc) { "/@,!9rJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )P$
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*/ Nk7Q
public void sort(int[] data) { P"- ,^?6
quickSort(data,0,data.length-1); k8h$#@^
} ? 0%lB=qQ
private void quickSort(int[] data,int i,int j){ O6`@'N>6P
int pivotIndex=(i+j)/2; *P_TG"^{W
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SortUtil.swap(data,pivotIndex,j); <'/+E4m
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int k=partition(data,i-1,j,data[j]); UZ<!(g.
SortUtil.swap(data,k,j); z_zr3XR9
if((k-i)>1) quickSort(data,i,k-1); c<e$6:|xM
if((j-k)>1) quickSort(data,k+1,j); 5L4~7/kj
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} +%FGti$[
/** lVqvS/_k$
* @param data kJ~^
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* @param i MOj 0"x)
* @param j %1#5
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* @return hX;xbl
*/ )]/!:I4e
private int partition(int[] data, int l, int r,int pivot) { K$rH{dUM
do{ TfJB;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GE"#.J4z
SortUtil.swap(data,l,r); tn p]wZ
} Q.!8q3`
while(l SortUtil.swap(data,l,r); ^*iZN
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return l; 1{DHlyA6g
} )9Jt550(
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} 4Jw0m#UN1
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改进后的快速排序: 0BD3~Lv
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package org.rut.util.algorithm.support; MJK L4 G
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import org.rut.util.algorithm.SortUtil; ecr pv+
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/** 75{QBlf<
* @author treeroot W$,c]/u|
* @since 2006-2-2 [/#;u*n
* @version 1.0 )(,+o
*/ Pj+XKDV]T
public class ImprovedQuickSort implements SortUtil.Sort { p#3P`I>ZrT
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private static int MAX_STACK_SIZE=4096; {+Eq{8m`
private static int THRESHOLD=10; NC0x!tJ#7
/* (non-Javadoc) Xmtq~}K>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7XdLZ4ub
*/ lqu1H&
public void sort(int[] data) { &C?]n.A
int[] stack=new int[MAX_STACK_SIZE]; Y,?rykRj
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int top=-1; N>VA`+aFR
int pivot; n-p|7N
int pivotIndex,l,r; `57ffQR9
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stack[++top]=0; o-/Xa[yC
stack[++top]=data.length-1; 9!PJLI=D
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while(top>0){ 3 bGpK9M~
int j=stack[top--]; 2c}>}A 4
int i=stack[top--]; cp[k[7XGD
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pivotIndex=(i+j)/2; t+ Fm?
pivot=data[pivotIndex]; xez~Yw2
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SortUtil.swap(data,pivotIndex,j); is`le}$^y
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do{ M" %w9)@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '@rGX+"
SortUtil.swap(data,l,r); v dyu =*Y
} iYBs )
while(l SortUtil.swap(data,l,r); |odl~juU
SortUtil.swap(data,l,j); O']-<E`1k
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if((l-i)>THRESHOLD){ 2{g~6U.
stack[++top]=i; Hb IRE
stack[++top]=l-1; =3Y?U*d
} FjVC&+c
if((j-l)>THRESHOLD){ )9J&M