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。 t8xXGWk0
插入排序: 'x"(OdM:[
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package org.rut.util.algorithm.support; 8=joVbs
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import org.rut.util.algorithm.SortUtil; u-4@[*^T$
/** DC-d@N+
* @author treeroot CAs:>s
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* @since 2006-2-2 qdv O>k3
* @version 1.0 H, :]S-T
*/ $8HiX6r
public class InsertSort implements SortUtil.Sort{ R(VOHFvW6
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/* (non-Javadoc) k>.8 lc\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PcU~1m1
*/ 0('ec60u
public void sort(int[] data) { Q3&q%n|<
int temp; !8cV."~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kC
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} ^V96lKt/
} hEsiAbTyF
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} ,#&7+e!]>P
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冒泡排序: T>L?\-
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package org.rut.util.algorithm.support; y;8&J{dd
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import org.rut.util.algorithm.SortUtil; fC*cqc~{@
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/** ZcyGLg0I
* @author treeroot \i%mokfbc
* @since 2006-2-2 (4A'$O2
* @version 1.0 $#u'XyA
*/ ,bdjk(
public class BubbleSort implements SortUtil.Sort{ 5h6o}
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/* (non-Javadoc) DHw)]WB M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G--X)h-
*/ 15<? [`:6
public void sort(int[] data) { Y-YuY
int temp; [p`5$\e
for(int i=0;i for(int j=data.length-1;j>i;j--){ \'*M
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if(data[j] SortUtil.swap(data,j,j-1); tS]
} y5m2u8+
} l&qCgw
} [{BY$"b#:
} bD:0k.`
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} l$/lbwi%
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选择排序: :\His{%
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package org.rut.util.algorithm.support; D5?8`U
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import org.rut.util.algorithm.SortUtil; IyyBW2
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/** {.{Wl,|7
* @author treeroot |9c~kTjK
* @since 2006-2-2 #H>{>0q
* @version 1.0 bP9ly9FH
*/ @3O)#r}\
public class SelectionSort implements SortUtil.Sort { "yaxHd
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/* PLc5m5
* (non-Javadoc) ^1bslCe
* Kx]SiejJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >{IPt]PCn
*/ A:r?#7 Ma
public void sort(int[] data) { ~&73f7
int temp; eNAxVF0
for (int i = 0; i < data.length; i++) { ?s^3o{!<W
int lowIndex = i; ~dRstH7u
for (int j = data.length - 1; j > i; j--) { cA
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if (data[j] < data[lowIndex]) { 0^-1d2Z~
lowIndex = j;
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} 3Hom0g,V4
} DdgiY9a.
SortUtil.swap(data,i,lowIndex); 6&eXQl
} :V)jm`)#+
} ]zSFX
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} &P|[YP37_
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Shell排序: :BF ? r
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package org.rut.util.algorithm.support; 'cXdc
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import org.rut.util.algorithm.SortUtil; !=,4tg`
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/** EX`P(=zD
* @author treeroot sV
* @since 2006-2-2 .9qK88fU R
* @version 1.0 tUJRNEg
*/ uPA
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public class ShellSort implements SortUtil.Sort{ 7mi!yTr}
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/* (non-Javadoc) Z nc(Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S }`sp[6
*/ d qn5G!fI
public void sort(int[] data) { // o.+?S
for(int i=data.length/2;i>2;i/=2){ LSJ?;Zg(=z
for(int j=0;j insertSort(data,j,i); d]l8ei@>h
} i/ilG3m>
} _6ZjF>f
insertSort(data,0,1); ~.m<`~u
} F3qK6Ah.
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/** H,!xTy"Wh
* @param data )#}>,,S
* @param j jV3PTU
* @param i =^nb+}Nz(
*/ \c}(rqT
private void insertSort(int[] data, int start, int inc) { dw
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int temp; Q6@<7E]y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^"/^)Lb!@M
} zN4OrG0
} Ic#xz;elM
} /fr> Fd
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} 6Dq4Q|C
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快速排序: $"^K~5Q
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package org.rut.util.algorithm.support; u*l|MIi6J
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import org.rut.util.algorithm.SortUtil; Z'JS@dV
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/** TC\+>LXiZ
* @author treeroot !+T1kMP+l
* @since 2006-2-2 ?['!0PF
* @version 1.0 5AYOM=O]t
*/ %a;#]d
public class QuickSort implements SortUtil.Sort{ <\aeC2~M
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/* (non-Javadoc) ut{T:kT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XIHN6aQ{X
*/ _!\d?]Ya
public void sort(int[] data) { +2~kHrv
quickSort(data,0,data.length-1); (\9`$
} X
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private void quickSort(int[] data,int i,int j){ Kx__&a
int pivotIndex=(i+j)/2; &XP(D5lf`B
file://swap Bh>L"'.2
SortUtil.swap(data,pivotIndex,j); d8j1L/e
}SN( ^3N
int k=partition(data,i-1,j,data[j]); sHP-@
SortUtil.swap(data,k,j); 7 F^d-
if((k-i)>1) quickSort(data,i,k-1); 3$$E0`7.
if((j-k)>1) quickSort(data,k+1,j); )+E[M!34
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} z ^gJy,T
/** 1 DWoL}Z
* @param data
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* @param i P3$eomX'
* @param j <B"sp r&1
* @return (q>
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*/ 4q$~3C[
private int partition(int[] data, int l, int r,int pivot) { `@]s[1?f
do{ c7Z4u|G
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Zp_(vOc
SortUtil.swap(data,l,r); d2
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} RU )35oEV|
while(l SortUtil.swap(data,l,r); Y?VbgOM)
return l; woYD &Oml
} ie}OZM
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} T(4d5 fY
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改进后的快速排序: y7R#PkQ~
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package org.rut.util.algorithm.support; o\AnM5
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import org.rut.util.algorithm.SortUtil; s[1ao"sZ^
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/** OG,P"sv
* @author treeroot z*y!Ml1
* @since 2006-2-2 `&$8/_`
* @version 1.0 GXNf@&
*/ [|u^:&az
public class ImprovedQuickSort implements SortUtil.Sort { S;Bk/\2
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private static int MAX_STACK_SIZE=4096; )s2] -n}W
private static int THRESHOLD=10; 0&.CAHb}
/* (non-Javadoc) AKNx~!%2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XZ
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*/ v0^9"V:y
public void sort(int[] data) { gt&|T
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int[] stack=new int[MAX_STACK_SIZE]; G1"iu89d
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int top=-1; E_HB[9
int pivot; o_b[ *
int pivotIndex,l,r; cPGlT"
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stack[++top]=0; "cH RGJG#
stack[++top]=data.length-1; <P9fNBGa
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while(top>0){ B{-7
int j=stack[top--]; D7ex{SVA)
int i=stack[top--]; # kI>
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pivotIndex=(i+j)/2; dn6B43w
pivot=data[pivotIndex]; KWwtL"3
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SortUtil.swap(data,pivotIndex,j); xS18t="
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file://partition t<%0eu|
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r=j; q^@*{H
do{ yoi4w 7:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >%JPgr/
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SortUtil.swap(data,l,r); Otn,UoeeB
} jXcJ/g(X3
while(l SortUtil.swap(data,l,r); )n/%P4l
SortUtil.swap(data,l,j); QaX.Av
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if((l-i)>THRESHOLD){ 0MQ= Rt
stack[++top]=i; 3JoY-
stack[++top]=l-1; z(PUoV:?
} 0oe<=L]F
if((j-l)>THRESHOLD){ .{Y;6]9[
stack[++top]=l+1; ]wQ!ZG?)
stack[++top]=j; ><%585
} [;E%o^/^
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} TFVQfj$r
file://new InsertSort().sort(data); ,N/@=As9$
insertSort(data); FR(W.5[
} =O/Bte.
/** <QtZ6-;_f
* @param data
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*/ -F[8ZiZ
private void insertSort(int[] data) { 8$Q`wRt(%
int temp; l=^A41L_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -"(*'hD
} r^9l/H~$
} f*ZU a
} )!y>2$20 r
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} }E`Y.=
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归并排序: b`0tfXzS5
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package org.rut.util.algorithm.support; ` ]|X_!J-
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import org.rut.util.algorithm.SortUtil; ! VwU=5
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/** -K"'F`;W
* @author treeroot 8(3(kZx S
* @since 2006-2-2 D6SUzI1+H
* @version 1.0 |1tKQ0jg
*/ @xG&K{j
public class MergeSort implements SortUtil.Sort{ 5Z=4%P*I
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/* (non-Javadoc) .soCU8i3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }A9#3Y|F
*/ A`c22Ls]
public void sort(int[] data) { QxT'\7f
int[] temp=new int[data.length]; ~C-Sr@ a?/
mergeSort(data,temp,0,data.length-1); *miG<
} #ydold{F
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private void mergeSort(int[] data,int[] temp,int l,int r){ [hJ1]RW8
int mid=(l+r)/2; [X(m[u '%
if(l==r) return ; ;qx#]Z0 <
mergeSort(data,temp,l,mid); BU
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mergeSort(data,temp,mid+1,r); , 5'o>Y
for(int i=l;i<=r;i++){ <,.$U\W
temp=data; D(cD8fn,J
} p l)":}/)
int i1=l; 1-RY5R}VR
int i2=mid+1; mq:k|w^6
for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) y@LI miRG
data[cur]=temp[i2++]; J%|?[{rO{'
else if(i2>r) U }2@
data[cur]=temp[i1++]; 7T[~~V^x
else if(temp[i1] data[cur]=temp[i1++]; 0Q3U\cDr
else PA2}4`
data[cur]=temp[i2++]; I2}W /}
} 0AZ9I!&i
} wG3L+[,
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} 7j&
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改进后的归并排序: = XZU9df
3ML][|TR
package org.rut.util.algorithm.support; OjU{r N*
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import org.rut.util.algorithm.SortUtil; DR"Y(-xl
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/** }2
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* @author treeroot HG]ARgOB
* @since 2006-2-2 FlO?E3d
* @version 1.0 h*%p%t<