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^5\w-gLY
插入排序: !lBK!'0
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package org.rut.util.algorithm.support; Lyit`j~yH
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import org.rut.util.algorithm.SortUtil; Eqh*"hE7
/** ` $q0fTz
* @author treeroot +=sw&DH
* @since 2006-2-2 9Q'[>P=1
* @version 1.0 GInw7
*/ `Jh<8~1
public class InsertSort implements SortUtil.Sort{ *,~L_)vWO
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/* (non-Javadoc) /U`p|M;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) amQTPNI
*/ rinTB|5
public void sort(int[] data) { YOUB%N9+
int temp; B:Awy/XMi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |kTq
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} RE4WD9n
} 6;wKL?snO
} Sh?eb
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冒泡排序: O%haaL\
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package org.rut.util.algorithm.support; lD-2 5~YV
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import org.rut.util.algorithm.SortUtil; }D.\2x(J
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/** MSRk|0Mcr
* @author treeroot L27WD m^)
* @since 2006-2-2 #=;vg
* @version 1.0 GLX{EG9Z
*/ @th94tk,
public class BubbleSort implements SortUtil.Sort{ pMAP/..+2
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/* (non-Javadoc) B|,d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f1;@a>X
*/ L
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public void sort(int[] data) { 9!kp3x/`
int temp; \CVHtV
for(int i=0;i for(int j=data.length-1;j>i;j--){ KY%{'"'u
if(data[j] SortUtil.swap(data,j,j-1); '@Yp@
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} +\)Y,@cw
} #9F>21UU
} f=u +G
} ]>Gi_20*.
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} =p"ma83
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选择排序: YDj5+'y
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package org.rut.util.algorithm.support; e9tb]sAG
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import org.rut.util.algorithm.SortUtil; _[-W*,xJ)
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/** &I(\:|`o
* @author treeroot pnyu&@e
* @since 2006-2-2 A*A/30o|R
* @version 1.0 #f HnM+
*/ 8 H3u"
public class SelectionSort implements SortUtil.Sort { {$i>\)
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/* ~PpDrJ; Va
* (non-Javadoc) 6-0sBB9=u
* TA2ETvz^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YOj&1ymBZ
*/ !c1M{klP
public void sort(int[] data) { `wQs$!a
int temp; 0NKgtH~+
for (int i = 0; i < data.length; i++) { F",TP,X
int lowIndex = i; URg;e M#
for (int j = data.length - 1; j > i; j--) { wfpl]d!
if (data[j] < data[lowIndex]) { G2?#MO
lowIndex = j; }qhYHC
} lX)AbK]nb
} Y:L[Iz95o
SortUtil.swap(data,i,lowIndex); 4,Oa(b
} c$^v~lQS
} :]]x^wony~
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} Us!ZQ#pP
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Shell排序: *w O~RnP
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package org.rut.util.algorithm.support; h6^|f%\w*i
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import org.rut.util.algorithm.SortUtil; xW*Lceb
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/** *PV"&cx
* @author treeroot )lJAMZ 5xp
* @since 2006-2-2 KK2YT/K$SG
* @version 1.0 z rG
*/ SA&(%f1d
public class ShellSort implements SortUtil.Sort{ <FBBR2
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/* (non-Javadoc) _ahp7-O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v[{7\Hha
*/ -3v\ c~
public void sort(int[] data) { 5N%d Les
for(int i=data.length/2;i>2;i/=2){ K:$mEB[c<
for(int j=0;j insertSort(data,j,i); #jG?{j3;?
} ?kQY ^pU
} v
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insertSort(data,0,1); 'TH[Db'`I
} *jWh4F,
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/** D"$Y, d
* @param data xH{-UQ3R
* @param j `PL}8ydZ
* @param i f_[dFKoX
*/ 8h@L_*Kr
private void insertSort(int[] data, int start, int inc) { ]k^?=
int temp; 2|& S2uq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); { +w.Z,D"
} w9VwZow
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快速排序: Y
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package org.rut.util.algorithm.support; -d#08\
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import org.rut.util.algorithm.SortUtil; hk:>*B}
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/** YX-j|m|
* @author treeroot X5VNj|IE
* @since 2006-2-2 JfSe;
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* @version 1.0 ox&?`DO
*/ eS@j? Y0y
public class QuickSort implements SortUtil.Sort{ 8P-ay<6
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/* (non-Javadoc) rDbtT*vN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JG'%HJ"D
*/ i]?
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public void sort(int[] data) { eT3!"+p-F
quickSort(data,0,data.length-1); tJ K58m$
} sBa:|(Y.
private void quickSort(int[] data,int i,int j){ 4jTO:aPh_
int pivotIndex=(i+j)/2; Z^%a 1>`
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SortUtil.swap(data,pivotIndex,j); ='b)6R
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int k=partition(data,i-1,j,data[j]); K'J_AMBL
SortUtil.swap(data,k,j); =KOi#;1
if((k-i)>1) quickSort(data,i,k-1); )G^k$j
if((j-k)>1) quickSort(data,k+1,j); ,m?V3xvq
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} s)]T"87H'_
/** c(
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* @param data V.*M;T\i
* @param i |rk.t g9
* @param j 9G
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* @return ;xz_H$g
*/ P}5bSQ( a3
private int partition(int[] data, int l, int r,int pivot) { y@I9>}"y
do{ uBt
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U?f-/@fc
SortUtil.swap(data,l,r); )2Sh oFF
} P:.jb!ZU
while(l SortUtil.swap(data,l,r); r/AOgS
return l; L5`k3ap|
} 1]=X
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} 8\P,2RSnt
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改进后的快速排序: P7=`P
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package org.rut.util.algorithm.support; K
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import org.rut.util.algorithm.SortUtil; fiWN^sTM
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/** jXf@JxQ
* @author treeroot }W:Z>vam+
* @since 2006-2-2 VNT?
* @version 1.0 "Tser*i )
*/ e`={_R{N
public class ImprovedQuickSort implements SortUtil.Sort { o"X..m<
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private static int MAX_STACK_SIZE=4096; w%qnH e9
private static int THRESHOLD=10; }FS_"0
/* (non-Javadoc) 59 g//;35@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Oy*
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*/ SzB<PP2
public void sort(int[] data) { tDL.+6/
int[] stack=new int[MAX_STACK_SIZE]; :$u[1&6
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int top=-1; WZ6{9/%:
int pivot; ps2j ]g
int pivotIndex,l,r; Pah@d!%A
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stack[++top]=0; :n13v@q
stack[++top]=data.length-1;
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while(top>0){ OW};i|
int j=stack[top--]; !c)F;
int i=stack[top--]; 9F3,
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pivotIndex=(i+j)/2; rucw{)
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pivot=data[pivotIndex]; >e/>@ J*
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SortUtil.swap(data,pivotIndex,j); 0/ 33Z Oc
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file://partition p%*s3E1.D
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r=j; $s}w23nB
do{ rWJ5C\R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '6NrL;
SortUtil.swap(data,l,r); Sd^I>;
} 6X A(<1P
while(l SortUtil.swap(data,l,r); N,XjZ26
SortUtil.swap(data,l,j); ;Ngk"5
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if((l-i)>THRESHOLD){ 9teP4H}m
stack[++top]=i; 0/]h"5H3
stack[++top]=l-1; D`G; C
} :I&y@@UG
if((j-l)>THRESHOLD){ _XP}fx7$C
stack[++top]=l+1; mYo~RXKGF
stack[++top]=j; L9e<hRZ$
} 3HuocwWbz
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} L;*7p9
file://new InsertSort().sort(data); u=L Dfn
insertSort(data); qZ>_{b0f
} ?QFxds
/** V0A> +
* @param data 0#'MR.,
*/ z0\
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private void insertSort(int[] data) { tQNc+>7k+u
int temp; $2*_7_Qb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O95gdxc
} aKW-(5<JW
}
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} 'C7R*
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归并排序: #E
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package org.rut.util.algorithm.support; Tw$tE:
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import org.rut.util.algorithm.SortUtil; o8:9Yjs
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/** E71H=C 4
* @author treeroot @^ta)Ev
* @since 2006-2-2 $A 5O>
* @version 1.0 Kp7)my
*/ X4\T=Q?uLx
public class MergeSort implements SortUtil.Sort{ Or$"f3gq
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/* (non-Javadoc) QPp31o.!5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~eP~c"L
*/ JP"#9f
public void sort(int[] data) { Xsanc@w)^C
int[] temp=new int[data.length]; HhCFAq"j
mergeSort(data,temp,0,data.length-1); =os!^{p7>
} *B@#A4f"
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private void mergeSort(int[] data,int[] temp,int l,int r){ ( -q0!]E
int mid=(l+r)/2; @mu{*. &
if(l==r) return ; i4> M
mergeSort(data,temp,l,mid); %LHt{:9.
mergeSort(data,temp,mid+1,r); ,@p4HN*
for(int i=l;i<=r;i++){ KRd'!bG=1
temp=data; hEo$Jz`
} ?r)>SB3(e
int i1=l; qh}+b^Wi
int i2=mid+1; >2K'!@~'
for(int cur=l;cur<=r;cur++){ ^j.3'}p
if(i1==mid+1) tr0kTW$Ad
data[cur]=temp[i2++]; L?a4>uVY
else if(i2>r) ZBU<L+#
data[cur]=temp[i1++]; t6e6v=.Pg
else if(temp[i1] data[cur]=temp[i1++]; c"CR_
else G]xN#O;
data[cur]=temp[i2++]; cRag0.[
} &