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。 {={^6@
插入排序: [M4xZHd#o
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package org.rut.util.algorithm.support; 1Yud~[c
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import org.rut.util.algorithm.SortUtil; My. dD'C
/** C1 W>/?XC
* @author treeroot d7E7f
* @since 2006-2-2 !~WZ_z
* @version 1.0 *2`:VFEV
*/ h%'
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public class InsertSort implements SortUtil.Sort{ ?4,@,
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/* (non-Javadoc) bZ/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @d&g/ccMxd
*/ <KtBv Ip]
public void sort(int[] data) { 5:c;RRn
int temp; +kM\
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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); `4LJ;KC(
} ;d4y{
} `qE4U4
} J;~E<_"Hn
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冒泡排序: `|Ey)@w
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package org.rut.util.algorithm.support; |) O):
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import org.rut.util.algorithm.SortUtil; 0pD[7~ ^o
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/** glx2I_y
* @author treeroot F99A;M8(
* @since 2006-2-2 mbyih+amCr
* @version 1.0 ;Z*'D}
*/ yxvjg\!&
public class BubbleSort implements SortUtil.Sort{ PcB{=L
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/* (non-Javadoc) DcN"=Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'j }g
*/ _%%yV
public void sort(int[] data) { FuuS"G,S
int temp; p5-<P?B
for(int i=0;i for(int j=data.length-1;j>i;j--){ `gI~|A4
if(data[j] SortUtil.swap(data,j,j-1); &mcR
} S;8. yj-
} Atd1qJ
} ;1@C_5C
} zka?cOmYF[
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选择排序: 8"i/wMP]
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package org.rut.util.algorithm.support; r{S=Z~J
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import org.rut.util.algorithm.SortUtil; )pS8{c)E
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/** 9:-T@u
* @author treeroot KaW~ERx5
* @since 2006-2-2 Rboof`pVt
* @version 1.0 ,Aj }]h\L
*/ wu 2:'y>n
public class SelectionSort implements SortUtil.Sort { 'irGvex
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/* $@2"{9Z
* (non-Javadoc) WNa3^K/W{
* ^X&)'H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &dRjqn^&X
*/ b66R}=P l
public void sort(int[] data) { [/OQyb4F<
int temp; xl8#=qmCD
for (int i = 0; i < data.length; i++) { y\#o2PVmY
int lowIndex = i; sLi*SR
for (int j = data.length - 1; j > i; j--) { 3u_oRs
if (data[j] < data[lowIndex]) { @Dj:4
lowIndex = j; c4 5?St
} 4UD' %}>y
} dF
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SortUtil.swap(data,i,lowIndex); ]RD5Ex!K?
} :G 5C ]'t
} 6R2uWv
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} e!Br>^8l
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Shell排序: x>
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package org.rut.util.algorithm.support; BFh$.+D
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import org.rut.util.algorithm.SortUtil; BI.V0@qZ
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/** Lm|al.Z
* @author treeroot mgVML&^
* @since 2006-2-2 ?E7=:h(@t
* @version 1.0 o?wt$j-
*/ l3p3tT3+
public class ShellSort implements SortUtil.Sort{ &SmXI5>Bo0
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/* (non-Javadoc) JYV\oV{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wAh#
*/ ltSh'w0
public void sort(int[] data) { S?4KC^Y5
for(int i=data.length/2;i>2;i/=2){ io2@}xZF
for(int j=0;j insertSort(data,j,i); oy5+}`
} -k{Jp/-D
} L\L"mc|O
insertSort(data,0,1); }9CrFTbx;
} tS<h8g_
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/** hVUIBJ/5(-
* @param data C[8Kl D
* @param j \Y e%o}.{
* @param i 1lcnRHO
*/ lKWr=k~
private void insertSort(int[] data, int start, int inc) { <*Ub2B[m
int temp; $<OhGk-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ug#<LO-.Rd
} 2-mQt_
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} /^2CGcT(
} E[?kGR[
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} T3z(k
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快速排序: _-%d9@x
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package org.rut.util.algorithm.support; sRq U]i8l
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import org.rut.util.algorithm.SortUtil; w$>3pQ8d
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/** }OrYpZob
* @author treeroot /DO'IHC.o
* @since 2006-2-2 Rla4L`X;
* @version 1.0 kcS6 _l
*/ M<(u A'
public class QuickSort implements SortUtil.Sort{ *jF#^=
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/* (non-Javadoc) !O{z 3W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h|p[OecG
*/ R1'`F{56
public void sort(int[] data) { |zpx)8Q
quickSort(data,0,data.length-1); ?@UAL.y
} GMm'of#
private void quickSort(int[] data,int i,int j){ uV~e|X
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int pivotIndex=(i+j)/2; :woa&(wN;1
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SortUtil.swap(data,pivotIndex,j); ;|TT(P:d
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); }-p,iTm
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); @^?XaU
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} |Q!4GeQL[
/** 0=;YnsY
* @param data N E=
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* @param i gX,9Gh
* @param j 2[up+;%Y
* @return &&PgOFD
*/ 254~:eB0
private int partition(int[] data, int l, int r,int pivot) { %&<W(|U1<
do{ 4*M@]J "
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); El6bD% \G
SortUtil.swap(data,l,r); g$3>~D
} te'*<HM
while(l SortUtil.swap(data,l,r); |4Ha?W
return l; C4NRDwU|.
} a+?~;.i~
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}
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改进后的快速排序: 1q]c7"
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package org.rut.util.algorithm.support; s, XM9h>P4
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import org.rut.util.algorithm.SortUtil; o~C('1Fdb
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/** iP "EA8
* @author treeroot =nVmthGw
* @since 2006-2-2 VJ{pN ~_1
* @version 1.0 SI*^f\lu
*/ \!H{Ks{#R.
public class ImprovedQuickSort implements SortUtil.Sort { B*@6xS[IL
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private static int MAX_STACK_SIZE=4096; V8"Wpl9Cz
private static int THRESHOLD=10; =!,Gst_
/* (non-Javadoc) O3%[dR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >;nS8{2o
*/ Coa -8j*R7
public void sort(int[] data) { @J vZ[T/
int[] stack=new int[MAX_STACK_SIZE]; >V!LitdJ
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int top=-1; D;js.ZF
int pivot; Y\?j0X;
int pivotIndex,l,r; arh@`'Q
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stack[++top]=0; E
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stack[++top]=data.length-1; mU G
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while(top>0){ gb 4pN
int j=stack[top--]; z{?4*Bq
int i=stack[top--];
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pivotIndex=(i+j)/2; QnKC#
pivot=data[pivotIndex]; _Bk
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SortUtil.swap(data,pivotIndex,j); tWD|qg_
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file://partition 'IQsve7cI
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do{ OVs wt
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dZ2`{@AYY
SortUtil.swap(data,l,r); 8$}OS-
} Oif,|:
while(l SortUtil.swap(data,l,r); #*,sa
SortUtil.swap(data,l,j); :oa9#c`L
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if((l-i)>THRESHOLD){ N z~"vi(t
stack[++top]=i; AcC8)xRpk4
stack[++top]=l-1; /f3m)pT
} #`/QOTnm2c
if((j-l)>THRESHOLD){ @ {}rG8
stack[++top]=l+1; 3jPB#%F
stack[++top]=j; X?dfcS*!n
} |}S1o0v{(a
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} ^
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file://new InsertSort().sort(data); crn k|o
insertSort(data); CLK^ gZ
} [7\>"v6
/** e4.&aIC[
* @param data }uQ${]&D
*/ ,w`~K:b.
private void insertSort(int[] data) { yJD>ny
int temp; y1,5$0@G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f7+Cz>R
} r!K|E95oj9
} ./w{L"E
} R6@uM<