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。 mEi+Tj zp
插入排序: 4.]xK2sW
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package org.rut.util.algorithm.support; *Z0 Y:"
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import org.rut.util.algorithm.SortUtil; &0B<iO<f
/** d&S4`\g?8
* @author treeroot /*g9drwaa
* @since 2006-2-2 ~" \qX+
* @version 1.0 08)X:@ w?
*/ mmk]Doy?#
public class InsertSort implements SortUtil.Sort{ [Xp{ztGE
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/* (non-Javadoc) l5sBDiir%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =%u\x=u|
*/ Q y(Gy'q~
public void sort(int[] data) { sj;8[Xy's
int temp; 97"dOi!Wh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =+um:*a.
} a*4"j2j v
} w)x`zVwO
} 3L2@C%
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} Wxjv=#3
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冒泡排序: :00 #l]g0q
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package org.rut.util.algorithm.support; nya-Io.
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import org.rut.util.algorithm.SortUtil; U?/UW;k[
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/** D&1*,`
* @author treeroot *"rgK|CM$
* @since 2006-2-2 OkSJob
* @version 1.0 Z2z"K<Z W
*/ 7%rSo^t,L
public class BubbleSort implements SortUtil.Sort{ a'R)3:S
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/* (non-Javadoc) cG%ttfq\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eF8!}|*N
*/ )9_jr(s
public void sort(int[] data) { &cj/8A5-
int temp; _n9+(X3
for(int i=0;i for(int j=data.length-1;j>i;j--){ y'sy]Q~
if(data[j] SortUtil.swap(data,j,j-1); J&,N1B
} }@IRReQ
} At5:X*vD
} ZLA&<]Ad"$
} 6;/>asf
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} \Ol3kx|
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选择排序: 8J|pj4ce
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package org.rut.util.algorithm.support; _=0;5OrK1X
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import org.rut.util.algorithm.SortUtil; w)bLdQ
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/** p%304oP6
* @author treeroot zGz^T
* @since 2006-2-2 J"w!Q\_
* @version 1.0 ]h (TZu
*/ u7|{~D&f
public class SelectionSort implements SortUtil.Sort { e2#"o{+@
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/* (]'Q!MjGa
* (non-Javadoc) ]+\@_1<ZI
* /BWJ)6#H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MWSx8R)PN
*/ ?f+w:FO
public void sort(int[] data) { G?-27Jk8
int temp; y<YVb@O.
for (int i = 0; i < data.length; i++) { oOk.Fq
int lowIndex = i; 2A3;#v
for (int j = data.length - 1; j > i; j--) { G~ZDXQ>5CP
if (data[j] < data[lowIndex]) { eqbxf#H!
lowIndex = j; #8;|_RU
} 7Dy\-9:v
} oF/5mh__(K
SortUtil.swap(data,i,lowIndex); 9%\<x
} ]d"4G7mu`l
} H[o'j@0
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} }Gpw2
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Shell排序: sr\l z}JW
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package org.rut.util.algorithm.support; Kb0OauW
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import org.rut.util.algorithm.SortUtil; s~$kzEtjjU
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/** UTQ$sg|7p
* @author treeroot TX{DZ#
* @since 2006-2-2 }~lF Rf
* @version 1.0 OVO0Emv
*/ [KkLpZG
public class ShellSort implements SortUtil.Sort{ jIMaPT
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/* (non-Javadoc) K5(?6hr;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e,Xvt5
*/ uR"srn;^
public void sort(int[] data) { puS'9Lpp
for(int i=data.length/2;i>2;i/=2){ ]I"oS?
for(int j=0;j insertSort(data,j,i); p#.B Fy
} XgKtg-,
} 9bjjo;A
insertSort(data,0,1); @f0~a
} CAY^ `K!
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/** aKaqi}IT
* @param data / /qTMxn
* @param j Vn1k C
* @param i _1*EMq6
*/ c=H(*#
private void insertSort(int[] data, int start, int inc) { VL"ZC:n)-
int temp; sS OI5W3A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +-,Q>`
} IoNZ'g?d
} T3['6%
} 3y> .1
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快速排序: I"3Qdi
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package org.rut.util.algorithm.support; TJ`E/=J!
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import org.rut.util.algorithm.SortUtil; ^BjwPh4Z#
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/** ~! ]FF}6
* @author treeroot :<%K6?'@^
* @since 2006-2-2 mBc;^8I?23
* @version 1.0
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*/ wpY%"x#-+=
public class QuickSort implements SortUtil.Sort{ .CI]8O"3y
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/* (non-Javadoc) uW4G!Kw28
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D>c%5h
*/ =(*Eh=Pw
public void sort(int[] data) { `e~/
quickSort(data,0,data.length-1); :RHNV
} PiI ):B>
private void quickSort(int[] data,int i,int j){ }K;@$B6,@
int pivotIndex=(i+j)/2; [?W3XUJ,Y
file://swap i>T{s-3v
SortUtil.swap(data,pivotIndex,j); IJq$GR
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int k=partition(data,i-1,j,data[j]); c@
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SortUtil.swap(data,k,j); *ok89ad
if((k-i)>1) quickSort(data,i,k-1); O<f_-n@G|
if((j-k)>1) quickSort(data,k+1,j); 6\O4R
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} |IH-a"
/** "eI-Y`O,
* @param data j3`:;'L
* @param i ^]wm Y
* @param j 4'+/R%jk"
* @return _@sqCf%|
*/ OjMDxG
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private int partition(int[] data, int l, int r,int pivot) { 7r"!&P*,
do{ 9|jIrS%/~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _w+sx5
SortUtil.swap(data,l,r); rf;R"Uc
} Sijwh1j*V
while(l SortUtil.swap(data,l,r); 4,FkA_k
return l; %S>lPt
} ,k{{ZP
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} UN|"D]>/
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改进后的快速排序: !i_5XcH
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package org.rut.util.algorithm.support; aChY5R
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import org.rut.util.algorithm.SortUtil; ]lQhIf6)k
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/** E3,Z(dpX!
* @author treeroot w
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* @since 2006-2-2 (U!WD`Ym
* @version 1.0 E_WiQ?p
*/ Dr(.|)hv[&
public class ImprovedQuickSort implements SortUtil.Sort { I"sKlMD
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private static int MAX_STACK_SIZE=4096; TKoO\\
private static int THRESHOLD=10; N
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/* (non-Javadoc) { +
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3dadeu^{A
*/ ,PRM(n -
public void sort(int[] data) { =h&DW5QC
int[] stack=new int[MAX_STACK_SIZE]; X@x:
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int top=-1; X~GZI*P
int pivot; FjiLc=RXXz
int pivotIndex,l,r; }}t"^m s
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stack[++top]=0; ]N1$ioC#
stack[++top]=data.length-1; +t.T+`
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while(top>0){ gADt%K2#Z
int j=stack[top--]; S)g5Tu)
int i=stack[top--]; L=Dx$#|
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pivotIndex=(i+j)/2; *i5&x/ds
pivot=data[pivotIndex]; w^R5/#F_r
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SortUtil.swap(data,pivotIndex,j); XZp(Po:H
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file://partition 22tY%Y9
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r=j; BAoqO
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do{ ?H*_:?=6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ODv)-J
SortUtil.swap(data,l,r); 1Lj\"+.
} )}G
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while(l SortUtil.swap(data,l,r); [`ttNW(_
SortUtil.swap(data,l,j); ,Hys9I
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if((l-i)>THRESHOLD){ ~Gwn||g78
stack[++top]=i; gvA&F|4
stack[++top]=l-1; Htsa<tF
} L>@0Nne7
if((j-l)>THRESHOLD){ Fdc bmQ
stack[++top]=l+1; J|6aa
stack[++top]=j; 6_zL#7E'
} `;cKN)Xk
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} 8VMq>-
file://new InsertSort().sort(data); dqF--)Nb
insertSort(data); 1f[!=p
} 8{?Oi'-|0
/** HLk}E*.mC
* @param data & rw|fF|]
*/ _Seiwk&
private void insertSort(int[] data) { P7u5Ykc*
int temp; <PV @JJ"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )%,bog(x
} p' /$)klt
} krz@1[w-j
} hCr7%`
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} >-)i_C2
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归并排序: r T*:1
T w"^I*B
package org.rut.util.algorithm.support; DeXnE$XH
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import org.rut.util.algorithm.SortUtil; NRoi`
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/** .P ,\69g~A
* @author treeroot Atfon&^
* @since 2006-2-2 G VEjB;
* @version 1.0 u{>5
*/ ,T&B.'cq
public class MergeSort implements SortUtil.Sort{ ?]3`WJOj
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/* (non-Javadoc) I9>1WT<Yy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5[/*UtB
*/ Y=}b/[s6;
public void sort(int[] data) { t}'Oh}CG
int[] temp=new int[data.length]; <7TpC@"/g
mergeSort(data,temp,0,data.length-1); pOH_ CXw
} kk!}mbA_}
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7~ |o_T
int mid=(l+r)/2; +8BH%f}X
if(l==r) return ; ?'h@!F%R'
mergeSort(data,temp,l,mid); =gfLl1wY[
mergeSort(data,temp,mid+1,r); 38Wv&!
for(int i=l;i<=r;i++){ 2]>s@?[
temp=data; '{OZ[$E
} vkBngsS
int i1=l; bcj7.rh]'h
int i2=mid+1; 9 .%{M#j
for(int cur=l;cur<=r;cur++){ W"wP%
if(i1==mid+1) Keof{>V=CA
data[cur]=temp[i2++]; v5<Ext
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else if(i2>r) t[an,3
data[cur]=temp[i1++]; ^$x^JM ]/
else if(temp[i1] data[cur]=temp[i1++]; "2=v?,'t
else i 3?zYaT
data[cur]=temp[i2++]; ;'vY^I8-L
} PeE'#&wn
} YtIJJH
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} iY*Xm,#
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改进后的归并排序: @p`#y
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package org.rut.util.algorithm.support; 9B*SWWAj
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import org.rut.util.algorithm.SortUtil; =VY[m-q5
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/** ?<F\S2W
* @author treeroot g<.VW0
* @since 2006-2-2 |5![k<o#
* @version 1.0 [#2= w
*/ vx-u+/\
public class ImprovedMergeSort implements SortUtil.Sort { P5aHLNit
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private static final int THRESHOLD = 10; L:B&`,E
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/* 7i/?+|
* (non-Javadoc) (mz a&WF7
* J-I7K!B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L'['7
*/ dmE-WS
public void sort(int[] data) { W:0@m^r
int[] temp=new int[data.length]; Txw,B2e)>
mergeSort(data,temp,0,data.length-1); Rmd;ug9
} GbNVcP.ocP
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private void mergeSort(int[] data, int[] temp, int l, int r) { JQbI^ef_;
int i, j, k; B VPf8!-
int mid = (l + r) / 2; KQr=;O\T
if (l == r) ?rHc%H
return; pGsVO5M?
if ((mid - l) >= THRESHOLD) @rVmr{UE
mergeSort(data, temp, l, mid); $wX5`d1
else ^s24f?3
insertSort(data, l, mid - l + 1); Iem* 'r
if ((r - mid) > THRESHOLD) |t.WPp5,
mergeSort(data, temp, mid + 1, r); (>)Y0ki}
else fh,Y#. V`
insertSort(data, mid + 1, r - mid); ][_:{ N/
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for (i = l; i <= mid; i++) { ?|8H$1
temp = data; EzthRe9
} GU"MuW`u2
for (j = 1; j <= r - mid; j++) { 'l<kY\I!%
temp[r - j + 1] = data[j + mid]; [x)BQX'
} *4.f*3*
int a = temp[l]; eH1Y!&`
int b = temp[r]; Y
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for (i = l, j = r, k = l; k <= r; k++) { 0e/~H^,SQ
if (a < b) { rg\|-_.es'
data[k] = temp[i++]; }*0%wP
a = temp; (D~mmffY1
} else { rfCoi>{<
data[k] = temp[j--]; W 6jB!W
b = temp[j]; !0zM@p
} 0jg-]
} A)VOv`U@2
} B"{CWH O
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/** a_Xh(d$
* @param data KXdls(ROP
* @param l 12k)Ek9
* @param i -pLb%f0?
*/ jp&