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。 '`goy%Wd
插入排序: WbD C
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package org.rut.util.algorithm.support; kV(DnZ#jq
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import org.rut.util.algorithm.SortUtil; oWaIjU0
/** HS&uQc a
* @author treeroot uF.\dY\xv
* @since 2006-2-2 r0$9c
* @version 1.0 T I7Ty+s
*/ /qQ2@k
public class InsertSort implements SortUtil.Sort{ ]#7Y@Yo
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/* (non-Javadoc) v%8-Al^G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;0X|*w1JO
*/ `zsk*W1GA
public void sort(int[] data) { \3Ald.EqtM
int temp; kA:;c}p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L!8?2 \5
} W2.1xNWO
} 6pz:Lfd80
} AU?YZEAei
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} {R8P $
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冒泡排序: .STf
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package org.rut.util.algorithm.support; #1!BD!u
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import org.rut.util.algorithm.SortUtil; Q@.9wEAJ
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/** ^l2d?v8
* @author treeroot _TcQ12H 5<
* @since 2006-2-2 X'Il:SK
* @version 1.0 !J?=nSu
*/ OsSiBb,W79
public class BubbleSort implements SortUtil.Sort{ Ly/~N/<\
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/* (non-Javadoc) iuk8c.TAR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mS;Q8Crh
*/ r_<i*l.
public void sort(int[] data) { \C\y'H5
int temp; OuIW|gIu0
for(int i=0;i for(int j=data.length-1;j>i;j--){ cz~11j#
if(data[j] SortUtil.swap(data,j,j-1); Ecl7=-y
} "7g8 d
} V'h z1roe
} .;v'oR1x5
} o>rlrqr?_
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} 5Fm?,^
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选择排序: @:&dOqQ
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package org.rut.util.algorithm.support; nPX'E`ut-V
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import org.rut.util.algorithm.SortUtil; 5+"8q#X$
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/** LzSusjEW@
* @author treeroot b020U>)v
* @since 2006-2-2 7
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* @version 1.0 q'-l;V|
*/ jN{xpd
public class SelectionSort implements SortUtil.Sort { Jj!tRZT
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/* krY.Cc]
* (non-Javadoc) Vw@x
* 8r|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :H:}t>X6Vo
*/ /*2W?ZM~H
public void sort(int[] data) { ^
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int temp; |2` $g
for (int i = 0; i < data.length; i++) { sWzXl~JbF
int lowIndex = i; ;8Q?`=a
for (int j = data.length - 1; j > i; j--) { A/6nVn
if (data[j] < data[lowIndex]) { /FZ )ej\
lowIndex = j; z#67rh{
} D(?#oCCA
} S5vMP
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SortUtil.swap(data,i,lowIndex); g
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} j`M<M[C*4N
} BnY|t2r
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} J3E:r_+
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Shell排序: J-?(sjIX
j'b4Sbs-f
package org.rut.util.algorithm.support; 4KB?g7_*
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import org.rut.util.algorithm.SortUtil; #`wfl9tj
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/** D"aQbQP
* @author treeroot 6j![m+vo%
* @since 2006-2-2 l),13"?C(
* @version 1.0 32' 9Ch.
*/ %R "nm
public class ShellSort implements SortUtil.Sort{ :#KURYO<
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/* (non-Javadoc) ttt&sW`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +/8?+1E ^
*/ 9:5NX3"p
public void sort(int[] data) { UZ0O
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for(int i=data.length/2;i>2;i/=2){ K`2DhJC
for(int j=0;j insertSort(data,j,i); Z4sjH1W
} TyXOd,%zl
} .b)(_*
insertSort(data,0,1); Efd[ZJxS6
} `G{t<7[[;
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/** AU\!5+RDB
* @param data ?%n9g)>Yej
* @param j v)pWx0l=
* @param i W]]2Uo.
*/ t$%}*@x7
private void insertSort(int[] data, int start, int inc) { GUZi }a|=
int temp; ?E+XD'~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;!Bkk9r"H
} c67!OHu mP
} @isqFKjph
} ew~FN
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} 5n#&Hjb*F0
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快速排序: |,f6c
Omf
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package org.rut.util.algorithm.support; l/M+JT~R
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import org.rut.util.algorithm.SortUtil; I[ C.iILL
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/** yU`IyaazZ
* @author treeroot 3P>@ :
* @since 2006-2-2 Dn!V)T
* @version 1.0 Fm{y.URo
*/ |mX8fRh
public class QuickSort implements SortUtil.Sort{ C*<LVW{P
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/* (non-Javadoc) --D`YmB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"TG:RP
*/ QY!A[!6h
public void sort(int[] data) { HX[#tT|m~
quickSort(data,0,data.length-1); jlZNANR3
} 7MfvU|D[d/
private void quickSort(int[] data,int i,int j){ Jl}7]cVq#
int pivotIndex=(i+j)/2; ~=Sr0+vV
file://swap ;T(^riAEl
SortUtil.swap(data,pivotIndex,j); b`=rd 4cpU
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int k=partition(data,i-1,j,data[j]); Kep?=9r4+
SortUtil.swap(data,k,j); v<**GW]neD
if((k-i)>1) quickSort(data,i,k-1); xbIA97g-O,
if((j-k)>1) quickSort(data,k+1,j); 5$w1[}UUd
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} @n3PCH6:Ao
/** }%|OnEk"
* @param data <9vkiEo
* @param i y3GIR
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* @param j !Zx>)V6.
* @return 7dIDKx
*/ \:S8mDI^s
private int partition(int[] data, int l, int r,int pivot) { =#Jb9=zdR
do{ ?Ci\3)u,P
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z@}~2K
SortUtil.swap(data,l,r); X*&r/=
} `^x^=
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while(l SortUtil.swap(data,l,r); Kxn=iv^Ir
return l; !Ai;S
} y uq E
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} 48VsHqG
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改进后的快速排序: ,$>Z= ~x*
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package org.rut.util.algorithm.support; s,8%;\!C
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import org.rut.util.algorithm.SortUtil; IuL]V TY
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/** %8/$CR
* @author treeroot x(Z@R\C-a
* @since 2006-2-2
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* @version 1.0 3m'6 cMQ
*/ BDg /pDnwg
public class ImprovedQuickSort implements SortUtil.Sort { G<I5%Yo6G
aY~IS?!;
private static int MAX_STACK_SIZE=4096; 'Z[R*Ikzq
private static int THRESHOLD=10; w6tY6bf}
/* (non-Javadoc) A_+WY|#M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5=7DE]
*/ O)?0G$0
public void sort(int[] data) { >'eqOZM
int[] stack=new int[MAX_STACK_SIZE]; V^D#i(5
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int top=-1; qn .
int pivot; SE1 tlP
int pivotIndex,l,r; 3h>Ji1vV
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stack[++top]=0; )/Vr 5b@
stack[++top]=data.length-1; a &j?"o
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while(top>0){ >=(e}~5y
int j=stack[top--]; +oa]v1/W
int i=stack[top--]; &DV'%h>i=
d:aQlW;}
pivotIndex=(i+j)/2; 6)8']f
pivot=data[pivotIndex]; +}!eAMQ
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SortUtil.swap(data,pivotIndex,j); c}lgWu~
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file://partition 9z?F_=PB!
l=i-1; K':f!sZ&2
r=j; RDbA"e5x
do{ _gHJ4(?w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KRQ/wuv
SortUtil.swap(data,l,r); |cacMgly
} D'X'h}+2
while(l SortUtil.swap(data,l,r); y\:2Re/*Jt
SortUtil.swap(data,l,j); {XAKf_Cg
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if((l-i)>THRESHOLD){ VQCPgs
stack[++top]=i; x+&&[>-P
stack[++top]=l-1; Jg:'gF]jt
} q:'(1y~
if((j-l)>THRESHOLD){ 6m]L{ buP
stack[++top]=l+1;
J' ;tpr
stack[++top]=j;
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} 8CL05:&
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} 7D,+1>5^Ne
file://new InsertSort().sort(data); wsARH>Vz
insertSort(data);
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} tP UQ"S
/** qy!G&
* @param data l/]P6 @N
*/ _VJb i,V
private void insertSort(int[] data) { -%A6eRShk
int temp; &&JMw6
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <:p&P
} eX=W+&lj
} rod{77
} FuD$jsEw
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} {RzlmDStV
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归并排序: 0iwx$u7[
iR_X,&p
package org.rut.util.algorithm.support; 3c6#?<%0`
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import org.rut.util.algorithm.SortUtil; |=SaI%%Be
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/** n\d-^ml
* @author treeroot YpAjZQZ,
* @since 2006-2-2 _G`kj{J
* @version 1.0 (_d^iZyf
*/ /N~.,vf
public class MergeSort implements SortUtil.Sort{ c(@)V.o2
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/* (non-Javadoc) xY@V.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,3x3&c
*/ h'wI/Z_'
public void sort(int[] data) { %POoyH@D}
int[] temp=new int[data.length]; t,&1~_9
mergeSort(data,temp,0,data.length-1); x;kW }U
} O7E0{8
{
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private void mergeSort(int[] data,int[] temp,int l,int r){ H1N%uk=kV
int mid=(l+r)/2; rR/PnVup
if(l==r) return ; >R
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mergeSort(data,temp,l,mid); O[$&]>x]]
mergeSort(data,temp,mid+1,r); './s'!Lj
for(int i=l;i<=r;i++){ (A?/D!y
temp=data; wVp
} v\&Wb_;A
int i1=l; }"A.[9 b
int i2=mid+1; |E|d"_Ma
for(int cur=l;cur<=r;cur++){ $yG=exh3v
if(i1==mid+1) y_QK _R<