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。 4:pgZz!
插入排序: q8FpJ\
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package org.rut.util.algorithm.support; gGx(mX._L?
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import org.rut.util.algorithm.SortUtil; {<-wm-]mo
/** S?J(VJqE
* @author treeroot b?qV~Dgk`
* @since 2006-2-2 #f/4%|t:
* @version 1.0 LsaX
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*/ b;#_?2c
public class InsertSort implements SortUtil.Sort{ ?~E"!
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/* (non-Javadoc) 1eEML"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FK94CI
*/ *::.Uo4O
public void sort(int[] data) { %Lb
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int temp; 'J5F+,\Ka
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }V`_(%Q-e
} #g0N/
} noEl+5uY
} *'aouS/?<6
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} O:pg+o&
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冒泡排序: nZ (wfNk
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package org.rut.util.algorithm.support; DuDt'^]
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import org.rut.util.algorithm.SortUtil; ,J-|.ER->
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/** ~K99DK.
* @author treeroot V2M4g
* @since 2006-2-2 yNn=r;FZQ
* @version 1.0 \~(kGE--+
*/ yjH'<
public class BubbleSort implements SortUtil.Sort{ + G[zE
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/* (non-Javadoc) CSq|R-@<U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GKSF(Tnj
*/ 5U4V_*V
public void sort(int[] data) { O!XSU,
int temp; JX[]u<h?
for(int i=0;i for(int j=data.length-1;j>i;j--){ !>80p~L
if(data[j] SortUtil.swap(data,j,j-1); !Ko>
} J:>o\%sF
} ;in-)`UC!
} Ql l{;A
} Zv=pS
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} Ak('4j!*}^
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选择排序: {6:*c
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package org.rut.util.algorithm.support; 4;CI<&S
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import org.rut.util.algorithm.SortUtil; svl!"tMXl
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/** zNoFM/1Vb
* @author treeroot lqJ92vi6Q
* @since 2006-2-2 HF_8661g
* @version 1.0 9X;*GC;d
*/ X#JUorGp
public class SelectionSort implements SortUtil.Sort { 'ROz| iJ
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/* q{f\_2[
* (non-Javadoc) 3Wv^{|^
* /_{ZWLi(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >c<xy>N
*/ <,n:w[+!`P
public void sort(int[] data) { 6o3#<ap<
int temp; FjtS
for (int i = 0; i < data.length; i++) { BSgT
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int lowIndex = i; $`/UG0rdC
for (int j = data.length - 1; j > i; j--) { DgW@v[#BK=
if (data[j] < data[lowIndex]) { g@4~,
lowIndex = j; _0'X!1"
} K$/"I0YyI
} )lS04|s
SortUtil.swap(data,i,lowIndex); GPhhg
} v G\J8s
} Q8m%mJz~]
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} qAH^BrJ
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Shell排序: zm5PlG
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package org.rut.util.algorithm.support; }s<;YC
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import org.rut.util.algorithm.SortUtil; ov,s]g83
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/** SF,:jpt`Z+
* @author treeroot sfn^R+x4,9
* @since 2006-2-2 <iU@ M31
* @version 1.0 xp95KxHHo
*/ %~Rg`+
public class ShellSort implements SortUtil.Sort{ -#T%*
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/* (non-Javadoc) (ub(0 h0j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +<[ q"3
*/ nTr]NBR
public void sort(int[] data) { j;_
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); ly*v|(S&
} J.4U;A5
} 7UW\|r
insertSort(data,0,1); r.#r!.6 q
} !Ea! "}
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/** SIrNZ^I
* @param data !10/M
* @param j p$1 'e,G
* @param i ^t
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*/ LS<+V+o2%
private void insertSort(int[] data, int start, int inc) { vMou`[\WlJ
int temp; }O@>:?U
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); zytN leyc
} Q?>r:vMi
} ~//9Nz~;3
} oOI0q_bf
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} C$+Q,guM
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快速排序: N^oP,^+U
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package org.rut.util.algorithm.support; IL.bwtpQD
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import org.rut.util.algorithm.SortUtil; V9"R8*@-
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/** v\?J=|S+
* @author treeroot ]`x+wWe
* @since 2006-2-2 ma*#*4
* @version 1.0 e7xv~C>g
*/ t`Z3*?UqI
public class QuickSort implements SortUtil.Sort{ @Drl5C}+
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/* (non-Javadoc) K(upzn*a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :~"myn,
*/ >^g2Tg:
public void sort(int[] data) { mTX:?>
quickSort(data,0,data.length-1); UwS7B~
} de W1>yh^_
private void quickSort(int[] data,int i,int j){ aIa<,
int pivotIndex=(i+j)/2; W>w(|3\
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SortUtil.swap(data,pivotIndex,j); l]zQSXip
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int k=partition(data,i-1,j,data[j]); s;oe Qa}TB
SortUtil.swap(data,k,j); [#@lsI
if((k-i)>1) quickSort(data,i,k-1); M("sekL
if((j-k)>1) quickSort(data,k+1,j); 1ds4C:M+<
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} zC)JOykI%
/** 2=K|kp5
* @param data D
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* @param i -n|>U:
* @param j 9Xg7=(#
* @return rM= :{
*/ |X>'W"Mn
private int partition(int[] data, int l, int r,int pivot) { hL/u5h%$
do{ $ dI
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J7",fb
SortUtil.swap(data,l,r); $[`rY D/.
} VV1sadS:S`
while(l SortUtil.swap(data,l,r); /Q7q2Ne^*
return l; Hm'fK$y(
} Dmi.@.
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} dO z|CfUhI
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改进后的快速排序: T8g\_m
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package org.rut.util.algorithm.support; SN{A@dyt
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import org.rut.util.algorithm.SortUtil; ,h1\PT9ULY
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/** &'k(v(>n,
* @author treeroot ly34aD/p~,
* @since 2006-2-2 [N~7PNd S
* @version 1.0 TEo
*/ bK#ZY
public class ImprovedQuickSort implements SortUtil.Sort { 5>%^"f
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private static int MAX_STACK_SIZE=4096; xa'U_]m
private static int THRESHOLD=10; \PT!mbB?
/* (non-Javadoc) ,sc#l<v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x*F-d2D
*/ u{=h%d/
public void sort(int[] data) { bf.+Ewb(
int[] stack=new int[MAX_STACK_SIZE]; yc]_ ?S>9
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int top=-1;
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int pivot; k]:`<`/I_
int pivotIndex,l,r; 4.,|vtp
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stack[++top]=0; w)S 4Xi=
stack[++top]=data.length-1; .{ILeG
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while(top>0){ -a_qZ7
int j=stack[top--]; 8iD7K@
int i=stack[top--]; ~ u1~%
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pivotIndex=(i+j)/2; DI;LhS*z
pivot=data[pivotIndex]; -eV*I>G
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SortUtil.swap(data,pivotIndex,j); zFFYl7]
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file://partition X$ul=iBs
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do{ bt1bTo
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rusM]Z
SortUtil.swap(data,l,r); T;Kv<G;
} |wb_im
while(l SortUtil.swap(data,l,r); tq}sedYhee
SortUtil.swap(data,l,j); ,ynN801\m
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if((l-i)>THRESHOLD){ +K'YVB
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stack[++top]=i; .Gr"|uII
stack[++top]=l-1; rLD1Cpeb,w
} 0[
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if((j-l)>THRESHOLD){ RjP]8tH&
stack[++top]=l+1; _]'kw [
stack[++top]=j; dmkGIg}
} ?6vGE~MuR
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} gJwX
file://new InsertSort().sort(data); py~[M'p(H
insertSort(data); ueW/i
} h
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/** ?t\GHQ$$?
* @param data ||cI~qg
*/ ;
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private void insertSort(int[] data) { !F6rcDK I
int temp; >W/mRv&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gz\wmH&rVz
} 4M>]0%3.D
} >3 p8o@:
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归并排序: c2GTN "
M9VAs~&S
package org.rut.util.algorithm.support; th"Aatmp
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import org.rut.util.algorithm.SortUtil; fE|"g'
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/** %ID48_>*
* @author treeroot Zn|lL0b{q
* @since 2006-2-2 5D^2
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* @version 1.0 )WEOqaR]
*/ -yIx:*KI
public class MergeSort implements SortUtil.Sort{ A$P Oc<
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/* (non-Javadoc) N-p||u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8-L -W[
*/ ,*L3
public void sort(int[] data) { iy8Ln,4z(
int[] temp=new int[data.length]; 0'5N[Bvp
mergeSort(data,temp,0,data.length-1); |9m*?7
} Fkqw#s(T
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private void mergeSort(int[] data,int[] temp,int l,int r){ "[_gRe*2
int mid=(l+r)/2; .nA9irc
if(l==r) return ; (c3O> *M
mergeSort(data,temp,l,mid); =':SOO7
mergeSort(data,temp,mid+1,r); &xC5Mecb*
for(int i=l;i<=r;i++){ }&l%>P
temp=data; {*F8'6YQ$
} \3rgwbF
int i1=l; ~^3U@(:
int i2=mid+1; sw(|EZ7F
for(int cur=l;cur<=r;cur++){ 7Sycy#D
if(i1==mid+1) );p:[=$71
data[cur]=temp[i2++]; N40DL_-
else if(i2>r) i Hcy,PBD
data[cur]=temp[i1++]; \gir
else if(temp[i1] data[cur]=temp[i1++]; @zsqjm
else ~P-^An^
data[cur]=temp[i2++]; \VAS<?3
} .T~Oc'wGo
} +'g~3A-G
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} oHethk
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改进后的归并排序: s<LYSr d
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package org.rut.util.algorithm.support; <q4<3A
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import org.rut.util.algorithm.SortUtil; W_]onq6
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/** ?ieC>cr
* @author treeroot q+9c81b
* @since 2006-2-2 D'_w
*
* @version 1.0 eC$ Jdf
*/ ? C6tYd
public class ImprovedMergeSort implements SortUtil.Sort { Gl>*e|}
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private static final int THRESHOLD = 10; @ql S #(
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/* vSJ#
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* (non-Javadoc) v==/tr)
* IKeO&]k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C.VU"= -
*/ WP?AQD
public void sort(int[] data) { U;Q?Rh-W
int[] temp=new int[data.length]; EUuk%<q7C(
mergeSort(data,temp,0,data.length-1); _VLA2#V>
} AKUmh
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private void mergeSort(int[] data, int[] temp, int l, int r) { z~RE}k
int i, j, k; z7]GZF
int mid = (l + r) / 2; Jw
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if (l == r) ~:"//%M3l
return; ;Z-%'5hKM
if ((mid - l) >= THRESHOLD) ^qNr<Ye
mergeSort(data, temp, l, mid); YyD0g9{
else 2j-^F
insertSort(data, l, mid - l + 1); SH1)@K-
if ((r - mid) > THRESHOLD) K\^S>dV
mergeSort(data, temp, mid + 1, r); Y/,Cy0!
else 9 EV. ![
insertSort(data, mid + 1, r - mid); ]R]%c*tA
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for (i = l; i <= mid; i++) { )s>R~7
temp = data; ;^|:*
} :$&