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。 (T#$0RFq
插入排序: Q}@t'
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package org.rut.util.algorithm.support; bh1$
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import org.rut.util.algorithm.SortUtil; cb /Q<i
/** |T""v_q
* @author treeroot /RJ
* @since 2006-2-2 yO1
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* @version 1.0 g,._3.D
*/ YUEyGhkMV{
public class InsertSort implements SortUtil.Sort{ ESRj<p%W
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/* (non-Javadoc) 1OMXg=Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gy/w #4xj
*/ uKP4ur@1
public void sort(int[] data) { " _2k3
int temp; y<Q"]H.CkQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uVn"L:_
} Ahwi
} sWo`dZ\6WB
} |ZH(Z}m
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冒泡排序: 4tZ *%!I'
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package org.rut.util.algorithm.support; Y 3ApW vS
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import org.rut.util.algorithm.SortUtil; {1OxJn1hd
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/** jG[Vp b
* @author treeroot 6/8K2_UeoW
* @since 2006-2-2 \~hrS/$[$
* @version 1.0 PK2;Ywk`
*/ 6h>#;M
public class BubbleSort implements SortUtil.Sort{ ;bB#Pg
}CBQdH&g;
/* (non-Javadoc) ?z9!=A%<V~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pz2 b
*/ wu.l-VmGp)
public void sort(int[] data) { [j0[c9.p[
int temp; |MZ1j(_
for(int i=0;i for(int j=data.length-1;j>i;j--){ T ?[28|
if(data[j] SortUtil.swap(data,j,j-1); 1 jidBzu<
} BI`)P+K2
} 58s-RO6
} M4C8K{}
} N@c GjpQ
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} <}RI<96
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选择排序: 5)%ahmY
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package org.rut.util.algorithm.support; 7{F\b
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import org.rut.util.algorithm.SortUtil; OZxJDg
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/** M
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* @author treeroot h~ k<"
* @since 2006-2-2 fmz"Zg9=
* @version 1.0 3@V?L:J
*/ A7X
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public class SelectionSort implements SortUtil.Sort { $yASWz
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/* +^Xf:r`
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* (non-Javadoc) bZYayjxZ5i
* ZG^<<V$h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]
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*/ %b^4XTz
public void sort(int[] data) { wSjDa.?'
int temp; 44ty,M3
for (int i = 0; i < data.length; i++) { 7~XC_Yc1
int lowIndex = i; Z`tmuu
for (int j = data.length - 1; j > i; j--) { 1jg* DQ7L
if (data[j] < data[lowIndex]) { 4,sE{%vb
lowIndex = j; cz9J&Le>
} 0~ho/ _
} zzf@U&x<
SortUtil.swap(data,i,lowIndex); E#KZZ lbx
} r
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} 5b}w
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Shell排序: n|{K_! f
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package org.rut.util.algorithm.support; 0/)2RmF
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import org.rut.util.algorithm.SortUtil; dC({B3#e{
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/** DJ"PP5d
* @author treeroot ,m#
* @since 2006-2-2 ni ?k' \\
* @version 1.0 ;A,X,f
*/
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public class ShellSort implements SortUtil.Sort{ dkw.o.e
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/* (non-Javadoc) <,)R`90_X6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bh.&vp.kP
*/ UOZ+&DL,L
public void sort(int[] data) { EQ$k^Y8 "
for(int i=data.length/2;i>2;i/=2){ UDG1F_&h
for(int j=0;j insertSort(data,j,i); 9)oi_U.
} r%=-maPL[
} B"_O!
insertSort(data,0,1); 2GptK"MrD
} V;%ug'j
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/** "/zgh
* @param data b{<?E };%
* @param j YCDH 0M
* @param i SI!A?34
*/ !.6n=r8d
private void insertSort(int[] data, int start, int inc) { F{ %*(U
int temp; @U_CnhPQq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ef`_
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} `<nxXsLe
} gq?7O<
} fd
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} 8%,#TMOg
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快速排序: d1cp=RbC
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package org.rut.util.algorithm.support; E2dM0r<]
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import org.rut.util.algorithm.SortUtil; ~X3g_<b_8
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/** #yH+ENp0
* @author treeroot =de'Yy:\-
* @since 2006-2-2 8ao-]QoMZ
* @version 1.0 Jc#D4e1#
*/ i.t%a{gL
public class QuickSort implements SortUtil.Sort{ G!6b
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/* (non-Javadoc) to?! qxn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1sHjM%
*/ mXz*Gi
public void sort(int[] data) { `6~0W5
quickSort(data,0,data.length-1); :K6JrS
} W0f^!}f(
private void quickSort(int[] data,int i,int j){ PLkS-B
int pivotIndex=(i+j)/2; :i<*~0r<
file://swap zP,r,ok7
SortUtil.swap(data,pivotIndex,j); 4k225~GQ:C
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int k=partition(data,i-1,j,data[j]); GeP={lj
SortUtil.swap(data,k,j); O^cC+@l!4
if((k-i)>1) quickSort(data,i,k-1); qnp}#BZ
if((j-k)>1) quickSort(data,k+1,j); n<C]
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} ?0; 2ct
/** TaRPMKk
* @param data VW\S>=O99
* @param i p}QDX*/sSu
* @param j
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* @return [OCjYC`
*/ e{E\YEc
private int partition(int[] data, int l, int r,int pivot) { 2fTuIS<yr
do{ 86=W}eV1r
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); blQ&QQL
SortUtil.swap(data,l,r); i%FC
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} MDF_Xr-hZ
while(l SortUtil.swap(data,l,r); O(/~cQ
return l; }&vD(hX
} yP{ 52%|+
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} vxZ'-&;t
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改进后的快速排序: f]r*;YEc4
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package org.rut.util.algorithm.support; jC'h54,Mr
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import org.rut.util.algorithm.SortUtil; wY<s
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/** )NZH{G
* @author treeroot !i torSl
* @since 2006-2-2 q@wD@_
* @version 1.0 G?}?>O
*/ 8NfXYR#
public class ImprovedQuickSort implements SortUtil.Sort { 2p&$bft
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private static int MAX_STACK_SIZE=4096; e6taQz@}
private static int THRESHOLD=10; "B{3q`(
/* (non-Javadoc) Q'n+K5&p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 23tX"e
*/ _z#"BN
public void sort(int[] data) { ~3.*b%,
int[] stack=new int[MAX_STACK_SIZE]; qKD
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int top=-1; `0qjaC
int pivot; A1prYD
int pivotIndex,l,r; "kP,v&n
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stack[++top]=0; 4v`/~a
stack[++top]=data.length-1; xS 1|t};
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while(top>0){ @*eY~
int j=stack[top--]; PgA<pfEHE
int i=stack[top--]; 7*PBJt\
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pivotIndex=(i+j)/2; 3/+kjY/
pivot=data[pivotIndex]; G Y%5N= u
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SortUtil.swap(data,pivotIndex,j); Es+I]o0K
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file://partition YIRe__7-NU
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r=j; W\~ie}D{
do{ ee?
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1gV?}'jq
SortUtil.swap(data,l,r); !\7M7
} ~6;I"0b5
while(l SortUtil.swap(data,l,r); F- -g?Q^
SortUtil.swap(data,l,j); D>y5&`
&)OI!^ (
if((l-i)>THRESHOLD){ Zye04&x9k
stack[++top]=i; "Ol:ni1
stack[++top]=l-1; B{)#A?Rh.
} >T]9.`xhK
if((j-l)>THRESHOLD){ ~-k,$J?7
stack[++top]=l+1; #//xOL3J
stack[++top]=j; &9flNoNR9
} P*!`AWn
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} 4*}&nmW
file://new InsertSort().sort(data); 2A\b-;4EP
insertSort(data); q'8*bu_
} Rj";?.R*e
/** 71@eJQ
* @param data @ ;!IPiU
*/ HX2u{2$
private void insertSort(int[] data) { Z5'^81m$o
int temp; ~
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1Of(O!
} B<I(t"s
} hZ 1enej)
} RyK~"CWT
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} w8X5kk
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归并排序: Md~SzrU
Z|C,HF+m.
package org.rut.util.algorithm.support; ')v,<{
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import org.rut.util.algorithm.SortUtil; gbzBweWF
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/** rx9*/Q0F
* @author treeroot p(pfJ^/:(
* @since 2006-2-2 PV#h_X<l%
* @version 1.0 o6A$)m5V
*/ hM]Z T5;<
public class MergeSort implements SortUtil.Sort{ H/{@eaV
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/* (non-Javadoc) Kn->R9Tl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) //c6vG
*/ ^mq(j_E.
public void sort(int[] data) { -7&ywgxl
int[] temp=new int[data.length]; {?:]'c
mergeSort(data,temp,0,data.length-1); ow \EL
} e$s&B!qJ
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private void mergeSort(int[] data,int[] temp,int l,int r){ bdWdvd:
int mid=(l+r)/2; !M8_PC*a
if(l==r) return ; "9P @bA
mergeSort(data,temp,l,mid); PR"x&JG@
mergeSort(data,temp,mid+1,r); L6CI9C;-b
for(int i=l;i<=r;i++){ KS8@A/f
temp=data; OvT[JpV
} +A8q.-N
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int i1=l; t|'%0 W
int i2=mid+1; 4}DFCF%B
for(int cur=l;cur<=r;cur++){ 6qDt6uB
if(i1==mid+1) [lML^CYQ
data[cur]=temp[i2++]; 9~`#aQG T
else if(i2>r) bK6^<,~
data[cur]=temp[i1++]; 8a*&,W
else if(temp[i1] data[cur]=temp[i1++]; [[c0g6
else 'nPI
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data[cur]=temp[i2++]; K W&muD
} JRC2+BU
/
} lt-3OcC
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} t#(=$
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改进后的归并排序: ]*=!lfrV
KH)-=IJ8
package org.rut.util.algorithm.support; ?ja%*0
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import org.rut.util.algorithm.SortUtil; U+'zz#0qN
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