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。 Ny)!uqul*
插入排序: Q>emyij
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package org.rut.util.algorithm.support; RI
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import org.rut.util.algorithm.SortUtil; seEG~/U<
/** r@Tq-o
* @author treeroot &'-ze,k}
* @since 2006-2-2 E"$AOM?(*i
* @version 1.0 %B'*eBj~fw
*/ 8yV?l7
public class InsertSort implements SortUtil.Sort{ &]Q\@;]Aq
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/* (non-Javadoc) d' Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V/}g'_E
*/ "]C$"JR
public void sort(int[] data) { 48 `k"Uy
int temp; k&PxhDf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }?jL;CCe
} xr*hmp1
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} Una7O]
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} fQ[ GN}k
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冒泡排序: hI{M?LQd
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package org.rut.util.algorithm.support; +84JvOkWi
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import org.rut.util.algorithm.SortUtil; 2Po e-=
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/** S0 AaJty
* @author treeroot ?UlAwxn
* @since 2006-2-2 [80L|?, *
* @version 1.0 3~7X2}qU
*/ t_PAXj
public class BubbleSort implements SortUtil.Sort{ @3hA\3ot^
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/* (non-Javadoc) W9ZfD~(3-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bu\:+3 )
*/ VuqJ&U.-
public void sort(int[] data) { \/Z?QBFvz
int temp; 6 ZutU ~HS
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4ACL|RF)A
if(data[j] SortUtil.swap(data,j,j-1); GoK[tjb
} Vnu*+
} [nO\Q3c|@$
} *-gd k9
} `J%iFm/5*
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} tp-PE?
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选择排序: -^i[
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package org.rut.util.algorithm.support; )zzK\I6/EQ
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import org.rut.util.algorithm.SortUtil; Hp2ysU
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/** bi y1!r
* @author treeroot DdY89R 6
* @since 2006-2-2 D\}A{I92F4
* @version 1.0 U8+5{,$\.
*/ UQmdm$.
public class SelectionSort implements SortUtil.Sort { )*=ds,
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/* 2E
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* (non-Javadoc) bG`aF*10)!
* MCBZq\c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hx4X#_)v
*/
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public void sort(int[] data) { >l & N
int temp; |~'PEY
for (int i = 0; i < data.length; i++) { ,i>{yrsOh
int lowIndex = i; K"%_q$[YQ
for (int j = data.length - 1; j > i; j--) { O_yk<
if (data[j] < data[lowIndex]) { a^U)2{A*f
lowIndex = j; >}& :y{z~
} e}
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} ^Jv$Wx
SortUtil.swap(data,i,lowIndex); 8|5ttdZ
} O#j&8hQ>
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Shell排序: 5crd.1@^
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package org.rut.util.algorithm.support; ?AMn>v
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import org.rut.util.algorithm.SortUtil; G?p !*7N
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/** 4 f)B@A-
* @author treeroot k0@b"y*
* @since 2006-2-2 4=BIYC"Lu
* @version 1.0 ?Xdb%.
*/ }0Q_yuzx0m
public class ShellSort implements SortUtil.Sort{ DZ-2Z@{PX
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/* (non-Javadoc) /2%646
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O[$,e%
*/ v-
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public void sort(int[] data) { ^Z
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for(int i=data.length/2;i>2;i/=2){ |`N|S
for(int j=0;j insertSort(data,j,i); "s$$M\)T
} thT2U8%T
} 8h,>f#)0c
insertSort(data,0,1); 8-s7^*!
} GkOZ=ej
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/** T[M:%vjYF
* @param data VLdQXNg9W"
* @param j y.iA]Ikz
* @param i wFe?0u
*/ @%aU)YDwi
private void insertSort(int[] data, int start, int inc) { Q%_QT0H9Kz
int temp; dH5 Go9`~R
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #N?VbDK9_
} ;hz;|\ko5
} mz[Q]e~&i
} {5GXN! f
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} 4qsP/`8
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快速排序: bfE4.YF
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package org.rut.util.algorithm.support; 3xhGmD\SKO
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import org.rut.util.algorithm.SortUtil; IBT1If3
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/** Lrrc&;
* @author treeroot Y8 % bk2
* @since 2006-2-2 PLb[U(~
* @version 1.0 X[e:fW[e)
*/ y7X2|$9z-
public class QuickSort implements SortUtil.Sort{ bjO?k54I
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/* (non-Javadoc) ~K7$ZM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Xjj-@
*/ v,[E*qMN
public void sort(int[] data) { sB~ |V
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quickSort(data,0,data.length-1); H;1_"
} Ha)Vf +W
private void quickSort(int[] data,int i,int j){ v@&UTU
int pivotIndex=(i+j)/2; {V7W!0;!
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SortUtil.swap(data,pivotIndex,j); l_2B
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int k=partition(data,i-1,j,data[j]); ^uV=|1<%
SortUtil.swap(data,k,j); ITt*TuS2c
if((k-i)>1) quickSort(data,i,k-1); ]jB`"to*}
if((j-k)>1) quickSort(data,k+1,j); z]49dCN
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} PwC9@c%c
/** Jyz*W!kI
* @param data q*^m8
* @param i D;Bij=
* @param j Qo5yfdR
* @return -$A
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*/ 4#Bzq3,|
private int partition(int[] data, int l, int r,int pivot) { X$Y\/|!z
do{ ,6EFJVu
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @'>Ul!.]
SortUtil.swap(data,l,r); )8JfBzR
} RSTA!?K/.
while(l SortUtil.swap(data,l,r); |uIgZ|7[
return l; k9*6`w
} gb^<6BYUG
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} VE $Kdo^
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改进后的快速排序: yADX^r(
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package org.rut.util.algorithm.support; GzN /0:b
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import org.rut.util.algorithm.SortUtil; hU~up a<dD
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/** N0V`xrS
* @author treeroot /*G-\|
* @since 2006-2-2 W[G5+*i
* @version 1.0 e#<A\?
*/ MwHxn%
public class ImprovedQuickSort implements SortUtil.Sort { wqasI@vyu
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private static int MAX_STACK_SIZE=4096; ww5UQs2sn
private static int THRESHOLD=10; sDZ<XA
/* (non-Javadoc) ?X'l&k>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NtDxwzj
*/ dsG:DS`q
public void sort(int[] data) { wZs jbNf`K
int[] stack=new int[MAX_STACK_SIZE]; ZWb\^N
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int top=-1; +=Y$v2BZA3
int pivot; XEL~y
int pivotIndex,l,r; >h9T/J8
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stack[++top]=0; [KW9J}]
stack[++top]=data.length-1; nkO4~p
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while(top>0){ 6
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int j=stack[top--]; XE`u
int i=stack[top--]; l|S_10x5
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pivotIndex=(i+j)/2; (o2.*x
pivot=data[pivotIndex]; d9.I83SS
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SortUtil.swap(data,pivotIndex,j); eAK=ylF;
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file://partition 6#;u6@+}yy
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r=j; l H{~?x
do{ bNG7A[|B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J] )gXVRM
SortUtil.swap(data,l,r); b\Mb6s
} q M(@wFg
while(l SortUtil.swap(data,l,r); xxZO{_q
SortUtil.swap(data,l,j); XNr8,[c
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if((l-i)>THRESHOLD){ rebWXz7
stack[++top]=i; ZRP[N)Ld$
stack[++top]=l-1; Y?4N%c_;
} 0/JTbf. CX
if((j-l)>THRESHOLD){ \y0]BH
stack[++top]=l+1; G7YBo4v
stack[++top]=j; 4CK$W`V
} A,;[9J2\&
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} )5ev4Qf
file://new InsertSort().sort(data);
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insertSort(data); ja%IGaH;s
} 2Xqa?ay0>
/** 3RP\w~?
* @param data z]R% A:6K
*/ *@fVog r^
private void insertSort(int[] data) { Q[&CtM
int temp; X8 A$&