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。 HTyF<K
插入排序: E wsq0D
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package org.rut.util.algorithm.support; e4%*I8
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import org.rut.util.algorithm.SortUtil; 9Ru%E>el-
/** 9|A-oS
* @author treeroot &ntP~!w
* @since 2006-2-2 13_~)V
* @version 1.0 bRz^=
*/ RXS| -_$
public class InsertSort implements SortUtil.Sort{ sxwW9_C
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/* (non-Javadoc) Ss! 3{VW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gLMea:
*/ Rue|<d1
public void sort(int[] data) { C!k9 JAa$Z
int temp; yZ)aKwj%U
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |abst&yp
} U3+_'"
} <i\zfa'6
} 'Mx K}9
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} bNpIC/#0K
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冒泡排序: 'S4EKV]
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package org.rut.util.algorithm.support; n!eqzr{
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import org.rut.util.algorithm.SortUtil; +[8Kl=]L
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/** cm 9oG
* @author treeroot C6V&R1" s
* @since 2006-2-2 0"qim0%|DF
* @version 1.0 !eAdm
*/ !:O/|.+Vmf
public class BubbleSort implements SortUtil.Sort{ ={E!8"
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/* (non-Javadoc) p@7i=hyt`p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;.Oh88|k
*/ Xtu`5p_Qv
public void sort(int[] data) { mn; 7o~4
int temp; H"q`k5R
for(int i=0;i for(int j=data.length-1;j>i;j--){ oD#<?h)(
if(data[j] SortUtil.swap(data,j,j-1); }#W`<,*rL.
} >6l ;/J
} =Q8H]F
} 8Z4?X%
} 7l#2,d4
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} $,e?X}4
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选择排序: PVD ~W)0m*
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package org.rut.util.algorithm.support; sE%<"h\_0
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import org.rut.util.algorithm.SortUtil; 60aKT:KLC_
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/** }EedHS
* @author treeroot Ng'ZAG;O
* @since 2006-2-2 _L4<^Etfm
* @version 1.0 ]oas
*/ X=p3KzzX
public class SelectionSort implements SortUtil.Sort { "h;;.Y8e
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/* Y=:KM~2hv
* (non-Javadoc) n,?IcDU~m
* OSa}8rlr'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Ay`rG
*/ xjK_zO*dLq
public void sort(int[] data) { ^#BGA|j
int temp; c.8((h/
for (int i = 0; i < data.length; i++) { lsB9;I^+x
int lowIndex = i; A`x
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for (int j = data.length - 1; j > i; j--) { iJZ|[jEDV
if (data[j] < data[lowIndex]) { JIP+ !2
lowIndex = j;
};"+ O
} 'Uko^R)(
} zD)IU_GWa
SortUtil.swap(data,i,lowIndex); T}t E/
} o4/I1Mq
} 'ybth
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} 1qLl^DW
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Shell排序: ;J(rw
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package org.rut.util.algorithm.support; !]rETP_
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import org.rut.util.algorithm.SortUtil; SLdN.4idK
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/** :Su #xI
* @author treeroot P.LuF(?$
* @since 2006-2-2 g5tjj.
* @version 1.0 Q e>i{:N
*/ \LdmGv@&
public class ShellSort implements SortUtil.Sort{ wC(vr.,F
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/* (non-Javadoc) ceFsGdS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (odR'#
*/ r zM Fof
public void sort(int[] data) { Ew
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for(int i=data.length/2;i>2;i/=2){ %XP_\lu]
for(int j=0;j insertSort(data,j,i); D!bKm[T
} GJ1;\:cQq
} d ~{jEg
insertSort(data,0,1); L$+d.=]
} K\{b!Cfr^
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/** N5 SLF4R1
* @param data {W5ydHXy
* @param j bp]^EVx
* @param i ,4^9cFVo
*/ Iv$:`7|crX
private void insertSort(int[] data, int start, int inc) { YgE]d?_h
int temp; 4M @oj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]d@^i)2LF
} 4F05(R8k
} mje<d"bW
} jM5_8nS&d
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} @br@[RpB
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快速排序: lLuID
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package org.rut.util.algorithm.support; =X-^YG3x
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import org.rut.util.algorithm.SortUtil; \Fj5v$J-
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/** C#MFpT
* @author treeroot M{`/f@z(
* @since 2006-2-2 Vbg10pV0
* @version 1.0 q} ]'Q
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*/ j/)"QiS*?
public class QuickSort implements SortUtil.Sort{ r<;l{7lY_
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/* (non-Javadoc) slU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 51I|0ly
*/ ;mDM5.iF
public void sort(int[] data) { i 8l./Yt/
quickSort(data,0,data.length-1); bTZ>@~$
} j?EskT6
private void quickSort(int[] data,int i,int j){ h ?uqLsRl
int pivotIndex=(i+j)/2; 06 QU
file://swap 5Z/yhF.{
SortUtil.swap(data,pivotIndex,j); duX0Mc.0P
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int k=partition(data,i-1,j,data[j]); H@V 7!d
SortUtil.swap(data,k,j); S8
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if((k-i)>1) quickSort(data,i,k-1); W7H&R,
if((j-k)>1) quickSort(data,k+1,j); Q*]$)D3n
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} 1hl]W+9
/** B\\6#
* @param data #EJhAJ
* @param i B?+.2
* @param j {jvOHu
* @return ]b 3/Es+
*/ ,eR8~(`=
private int partition(int[] data, int l, int r,int pivot) { C\
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do{ k!5m@'f
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $tI]rU
SortUtil.swap(data,l,r); @.'z* |z
} Y[2Wt%2\6
while(l SortUtil.swap(data,l,r); &e5(Djz8t
return l; g3Z:{@m
} l
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} g%ubvu2t]
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改进后的快速排序: [`d$X^<y;
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package org.rut.util.algorithm.support; OFA{
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import org.rut.util.algorithm.SortUtil; nSS>\$
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/** h;-a`@rO ;
* @author treeroot ;x-(kIiE
* @since 2006-2-2 #? dUv#
* @version 1.0 f\fdg].!
*/ |'tW=
public class ImprovedQuickSort implements SortUtil.Sort { moMYdArj
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private static int MAX_STACK_SIZE=4096; #/|75
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private static int THRESHOLD=10; zrs<#8!Y_!
/* (non-Javadoc) (:5G#?6,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9qKzS<"h
*/ [QT1Ju64
public void sort(int[] data) { `-_N@E1'>
int[] stack=new int[MAX_STACK_SIZE]; !YiuwFt
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int top=-1; ;imRh'-V6
int pivot; EeB ]X24
int pivotIndex,l,r; 4e +~.5r@i
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stack[++top]=0; b.b@bq$1
stack[++top]=data.length-1; 2jl)mL
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while(top>0){ ,vV]"f
int j=stack[top--]; 3o*FPO7?
int i=stack[top--]; IS BV%^la|
} VEq:^o.
pivotIndex=(i+j)/2; Zk&h:c
pivot=data[pivotIndex]; w5*Z!
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SortUtil.swap(data,pivotIndex,j); X eoJ$PfT
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file://partition l?/Y
l=i-1; \?D R
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r=j; k6!4Zz_8
do{ T$KF<
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C)Jn[/BD
SortUtil.swap(data,l,r); ME^,'&
} EATu KLP\
while(l SortUtil.swap(data,l,r); Q6IQV0{p
SortUtil.swap(data,l,j); ,LZX@'5
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if((l-i)>THRESHOLD){ B6]<G-
stack[++top]=i; H2;X
stack[++top]=l-1; 3xNMPm
} Q$ri=uB;+
if((j-l)>THRESHOLD){ [3N[i(Wlk
stack[++top]=l+1; /RT%0!
stack[++top]=j; B@O@1?c[
} at6149B\)
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} WZZ4]cC
file://new InsertSort().sort(data); iWE)<h
insertSort(data); -Xz&}QA
} K=?VDN
/** RKZ6}q1n
* @param data `TtXZ[gP}
*/ mM/i^zT
private void insertSort(int[] data) { ?m0IehI
int temp; ~ttY(wCV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4 o(bxs"
} Sm-wH^~KA
} FJNF%a)x2I
} ?":'O#E
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} ,RxYd6
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归并排序: VR5fqf|*
O7t(,uox3y
package org.rut.util.algorithm.support; i)ASsYG!
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import org.rut.util.algorithm.SortUtil; hWo=;#B*
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/** 6rN(_Oi-
* @author treeroot _:`!DIz~9}
* @since 2006-2-2 CO?Xt+1hR
* @version 1.0 nZy X_J,Vd
*/ sC"}8+[)S3
public class MergeSort implements SortUtil.Sort{ {@Y
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/* (non-Javadoc) _qXa=|}V.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xJs;v
*/ ($nrqAv4
public void sort(int[] data) { ~8T(>!hE1h
int[] temp=new int[data.length]; !yOeW0/2[
mergeSort(data,temp,0,data.length-1); SC &~s$P;
} C\ZkGX
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private void mergeSort(int[] data,int[] temp,int l,int r){ sZ&G%o
int mid=(l+r)/2; "xRBE\B
if(l==r) return ; os lJC$cy'
mergeSort(data,temp,l,mid); <?Wti_ /M
mergeSort(data,temp,mid+1,r); q2rUbU_A(
for(int i=l;i<=r;i++){ $2~\eG=u H
temp=data; vhuw&.\
} <plC_{Y:wu
int i1=l; D]s]"QQ8
int i2=mid+1; M$Zo.Bl$(
for(int cur=l;cur<=r;cur++){ ,)!u)wz
if(i1==mid+1) (Y%Q|u
data[cur]=temp[i2++]; j2l55@
else if(i2>r) <M]h{BS=
data[cur]=temp[i1++]; 'R<&d}@P*#
else if(temp[i1] data[cur]=temp[i1++]; $,>@o=)_
else
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data[cur]=temp[i2++]; 3q:n'PC)C
} fq[;%cr4
} +>~?m*$
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} R%D'`*+
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改进后的归并排序: 6 15s5ZA
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package org.rut.util.algorithm.support; ?ULo&P[
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import org.rut.util.algorithm.SortUtil; !2UOC P
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/** `+:.L>5([
* @author treeroot !HeSOzN
* @since 2006-2-2 ^u}L;`L
* @version 1.0 /walu+]h
*/ *+'2?*
public class ImprovedMergeSort implements SortUtil.Sort { dC\ZjZZ
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private static final int THRESHOLD = 10; 7pA/
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/* hI?sOR!
* (non-Javadoc) Rm1A>1a:
* A\_ |un%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +
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*/ :j')E`#
public void sort(int[] data) { &!aAO(g
int[] temp=new int[data.length]; <s5qy-
mergeSort(data,temp,0,data.length-1); 5]I| DHmu
} ofYlR|
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private void mergeSort(int[] data, int[] temp, int l, int r) { [.hyZ}B
int i, j, k; h_1T,f(
int mid = (l + r) / 2; 8}X5o]Mv
if (l == r) uXDq~`S
return; Ghl'nqPlm
if ((mid - l) >= THRESHOLD) g.c8FP+
mergeSort(data, temp, l, mid); KDl_?9E5
else Hn>B!Bm*
insertSort(data, l, mid - l + 1); I1oje0$
if ((r - mid) > THRESHOLD) #_Z$2L"U
mergeSort(data, temp, mid + 1, r); ?m$a6'2-,J
else Uj+j}C
insertSort(data, mid + 1, r - mid); a22Mufl
b^D$jY
for (i = l; i <= mid; i++) { X|0R=n]
temp = data; kg@>;(V&
} }g# &