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。 F\+AA
插入排序: 34!.5^T
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package org.rut.util.algorithm.support; yC 1OeO8{
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import org.rut.util.algorithm.SortUtil; %dPk,Ylz
/** &J2UAmB
* @author treeroot s9sl*1n1m`
* @since 2006-2-2 ^OQP;5 #K
* @version 1.0 2LUsqL\m}.
*/ N2s"$Ttq
public class InsertSort implements SortUtil.Sort{ }UsH#!9.
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/* (non-Javadoc) QGfwvFm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <$-^^b(y
*/ hT-^1:N
public void sort(int[] data) { _Sd^/jGpU
int temp; ben-<3r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |OCiq|#
} f> Jj5he/
} Rs"=o>Qu
} h# 4n
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} 36OQHv;&
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冒泡排序: 9Zl4NV&B
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package org.rut.util.algorithm.support; u]NsCHKlT
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import org.rut.util.algorithm.SortUtil; u=InE|SH
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/** >xo<i8<Miv
* @author treeroot 1 jB0gNe
* @since 2006-2-2 dj(&"P
* @version 1.0 -(TC'
*/ *Lrrl
public class BubbleSort implements SortUtil.Sort{ 4dFr~ {
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/* (non-Javadoc) .Xp,|T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nD/B:0'
*/ 5PeYQ-B|
public void sort(int[] data) { WMC^G2 n
int temp; 3_
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for(int i=0;i for(int j=data.length-1;j>i;j--){ p3 5)K5V
if(data[j] SortUtil.swap(data,j,j-1); _@>*]g
} "W6cQsi
} ?9{^gW4|
} el5Pe{j'
} GEy7Vb)
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} 5lHt~hB\
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选择排序: I-!7 EC2{!
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package org.rut.util.algorithm.support; _-RqkRI
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import org.rut.util.algorithm.SortUtil; S>x@9$( ym
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/** &M@ .d$<C
* @author treeroot |GQq:MB;z
* @since 2006-2-2 W gyRK2#!
* @version 1.0 `?=3[
*/ bTeuOpp
public class SelectionSort implements SortUtil.Sort { I(VqtC:K.
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/* hJ8&OCR }
* (non-Javadoc) 7hn[i,?`
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* 7#"NKxb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :|5 m"X\
*/ cu}(\a
public void sort(int[] data) { $,Xn@4
int temp; ASi2;Q_{_
for (int i = 0; i < data.length; i++) { I52nQCXi
int lowIndex = i; _Ml?cT/J.O
for (int j = data.length - 1; j > i; j--) { ;C*2Djb*n
if (data[j] < data[lowIndex]) { ,?m@Ko7Y
lowIndex = j; YC%xW*
} dl=)\mSFjF
}
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SortUtil.swap(data,i,lowIndex); +arh/pd_I
} ~_;.ZZ-H]
} YkF LNCg4}
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} _hV34:1F
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Shell排序: KF
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package org.rut.util.algorithm.support; ?3DFm
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import org.rut.util.algorithm.SortUtil; , Zie2I?q
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/** :1f,%Z$,q
* @author treeroot 4IZAJqw(*
* @since 2006-2-2 _s#J\!F
* @version 1.0 WVQHb3Pe0
*/ lW-G]V
public class ShellSort implements SortUtil.Sort{ A
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/* (non-Javadoc) %fld<O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _gK}Gi?|
*/ ZJbaioc\
public void sort(int[] data) { -{*3<2rFK
for(int i=data.length/2;i>2;i/=2){ ]+ub
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for(int j=0;j insertSort(data,j,i); OF1^_s;
} BIMX2.S1o
} CaCApL
insertSort(data,0,1); `Qb!W45
} )2E vZn
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/** kygj" @EX
* @param data T@vE@D
* @param j am5;B`}q
* @param i 0K"+u9D^
*/ i885T'
private void insertSort(int[] data, int start, int inc) { &0*l:uw
int temp; )<J #RgE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3?aM\z;
} 'Sd+CXS
} }duqX R
} arKf9`9
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} -+qg
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快速排序: r4FSQ$[9w
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package org.rut.util.algorithm.support; ,^
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import org.rut.util.algorithm.SortUtil; C-49u<;,
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/** 2 PPb
* @author treeroot C4X3;l Z%S
* @since 2006-2-2 ;X;x.pi
* @version 1.0 Z1W%fT
*/ VZamR}x
public class QuickSort implements SortUtil.Sort{ dXn$XGF%R
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/* (non-Javadoc) yp]vDm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z 5 .cfI[
*/
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public void sort(int[] data) { -*&aE~Cs
quickSort(data,0,data.length-1); M4?>x[Pw
} nRq[il0 `i
private void quickSort(int[] data,int i,int j){ Xq"9TYf$
int pivotIndex=(i+j)/2; V=1yg24B<
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SortUtil.swap(data,pivotIndex,j); `mZ1!I-T
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int k=partition(data,i-1,j,data[j]); 0ZL>-
SortUtil.swap(data,k,j); -{?xl*D
if((k-i)>1) quickSort(data,i,k-1); B2BG*xa
if((j-k)>1) quickSort(data,k+1,j); kSge4?&
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} \l[AD-CZPh
/** N-}OmcO]e
* @param data k_^
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* @param i p8s%bPjK
* @param j b<r*EY
* @return [r]<~$
*/ pR*3Q@Ng
private int partition(int[] data, int l, int r,int pivot) { Bd>ATc+580
do{ o=5hG9dj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6>)KiigZ\
SortUtil.swap(data,l,r); _Co
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} iRW5*-66f
while(l SortUtil.swap(data,l,r); .aK=z)
return l; [;toumv
} 2l+'p[b0>
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} Zia6m[ ^Q
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改进后的快速排序: a(JtGjTf&
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package org.rut.util.algorithm.support; CpgaQG^
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import org.rut.util.algorithm.SortUtil; 2gvS`+<TP
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/** E[CvxVCx
* @author treeroot Vhm^<I-d
* @since 2006-2-2 %74f6\
* @version 1.0 >Zf*u;/dW$
*/ *:l$ud
public class ImprovedQuickSort implements SortUtil.Sort { gs@^u#O
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private static int MAX_STACK_SIZE=4096; 4g.S!-H@R
private static int THRESHOLD=10; S[rfcL"
/* (non-Javadoc) A}"uEk(R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oY@]&A^ah
*/ m1 p%,
public void sort(int[] data) { el^<M,7!
int[] stack=new int[MAX_STACK_SIZE]; t!ZFpMv]n
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int top=-1; p7*7V.>X
int pivot; Z%-uyT@a
int pivotIndex,l,r; 3fop.%(
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stack[++top]=0; Ki)hr%UFw
stack[++top]=data.length-1; \\"CgH-
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while(top>0){ !\&4,l(
int j=stack[top--]; H/G;hk
int i=stack[top--]; 3bugVJ93
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pivotIndex=(i+j)/2; J2`OJsMwWe
pivot=data[pivotIndex]; O_SM! !,
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SortUtil.swap(data,pivotIndex,j); ?N%5c%oF
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file://partition }4>#s$.2
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r=j; 61TL]S8
do{ S7hfwu&7F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ! }awlv;
SortUtil.swap(data,l,r); h/l?,7KHI
} N4_V
while(l SortUtil.swap(data,l,r); ~-(X\:z}
SortUtil.swap(data,l,j); ;Y &2G'
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if((l-i)>THRESHOLD){ _..5G7%#%
stack[++top]=i; l?beqw:
stack[++top]=l-1; Cmj `WSSa
} 'ka"0~:NS{
if((j-l)>THRESHOLD){ st CFLYox
stack[++top]=l+1; yD ur9Qd6
stack[++top]=j; Nk>6:Ho{G
} ZOzyf/?.
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} 5YiBw|Z7 "
file://new InsertSort().sort(data); N<lf,zGw
insertSort(data); "\1V^2kMr
} yj`xOncE}
/** C_hIPMU=
* @param data odq3@
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*/ l_=kW!l
private void insertSort(int[] data) { <gr2k8m6$
int temp; m9m~ 2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z;i4F.p
} x\(yjNZH
} TGPHjSZ1
} 7o M]qLF
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} =0mGfTc
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归并排序: 5 s2/YG=
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package org.rut.util.algorithm.support; !]WC~#|{B
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import org.rut.util.algorithm.SortUtil; B.[5N;c
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/** QnDLSMx)
* @author treeroot fm,:8%
* @since 2006-2-2 j: B,K.:
* @version 1.0 2HvzMo-4
*/ O Bp/:]
public class MergeSort implements SortUtil.Sort{ %O&C\{J
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/* (non-Javadoc) 0 :1ldU
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 12%4>2}~>
*/ -
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public void sort(int[] data) { 1HNX6
int[] temp=new int[data.length]; z0&I>PG^
mergeSort(data,temp,0,data.length-1); ]r1C
} W.U|mNJ$
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private void mergeSort(int[] data,int[] temp,int l,int r){ o!t1EPJE*
int mid=(l+r)/2; -wV0Nv(V8
if(l==r) return ; 38q0iAH
mergeSort(data,temp,l,mid); 3H47 vm(`
mergeSort(data,temp,mid+1,r); [ w1"
for(int i=l;i<=r;i++){ \8X8NCM
temp=data; (vf5qF^
} \ \~4$Ai[
int i1=l; t]%!vXo
int i2=mid+1; kOuQR$9s
for(int cur=l;cur<=r;cur++){ ^l/$ 13=
if(i1==mid+1) }u7&SU
data[cur]=temp[i2++]; q&wXs