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。 \T)2J|mW
插入排序: JWhi*je
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package org.rut.util.algorithm.support; df_hmkyj
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import org.rut.util.algorithm.SortUtil; JvFd2@
/** g?,\bmH E
* @author treeroot 7b7~D +b
* @since 2006-2-2 _t[RHrs
* @version 1.0 >Micc
*/ v'`VyXetl
public class InsertSort implements SortUtil.Sort{ )cnH %6X
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/* (non-Javadoc) qcau(#I9.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )xgOl*D
*/ wZ7Opm<nt
public void sort(int[] data) { _U}pdzX?
int temp; A$gP: 1&m
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rlc$2y@pU
} ^NZq1c
} K|Sh
} ,l-tLc
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} &%M!!28X:
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冒泡排序: ;T1OXuQ
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package org.rut.util.algorithm.support; Pn:L=*
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import org.rut.util.algorithm.SortUtil; Pf`HF|NI
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/** ]PWK^-4P
* @author treeroot W Z'UVUi8
* @since 2006-2-2 %j3XoRex><
* @version 1.0 )+;Xfftz
*/ W"j&':xD
public class BubbleSort implements SortUtil.Sort{ JC|j*x(k/
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/* (non-Javadoc) t>nx#ErS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9<qAf`
*/ [n%=2*1p
public void sort(int[] data) { J~.8.]gXW
int temp; DIrQ5C
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3 !W
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if(data[j] SortUtil.swap(data,j,j-1); CK4C:`YG
} TmI~P+5w
} )anprhc
} ?` ?HqR0
} 3d<Z##`{4
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} )"W__U0
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选择排序: Mn`);[
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package org.rut.util.algorithm.support; Er@'X0n
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import org.rut.util.algorithm.SortUtil; BO5\rRa0
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/** l@edR)n <
* @author treeroot {'O,G$Ldkr
* @since 2006-2-2 lX g.`
* @version 1.0 MaMP7O|W
*/ rQE:rVKVh
public class SelectionSort implements SortUtil.Sort { B=vBJC)
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/* HLYog+?
* (non-Javadoc) .7GTL
* .J?cV;:`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V{qpha4'P
*/ 94uAt&&b(
public void sort(int[] data) { T#M_2qJ1=
int temp; Mk-zeq<2z
for (int i = 0; i < data.length; i++) { z89!\Q
int lowIndex = i; pNt,RRoR
for (int j = data.length - 1; j > i; j--) { "rHcsuSEw
if (data[j] < data[lowIndex]) { 4i]h0_]
lowIndex = j; $,I%g<
} 4%refqWK
} @Z}TF/Rx4
SortUtil.swap(data,i,lowIndex); 'ozu4y
}
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} %s&"gWi
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Shell排序: ya`Z eQ-p
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package org.rut.util.algorithm.support; ~<Eu
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import org.rut.util.algorithm.SortUtil; CdZS"I
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/** SN#Cnu}
* @author treeroot o5h*sQ9
* @since 2006-2-2 ,8Eg/
* @version 1.0 fYgEiap
*/ rt8"U<~
public class ShellSort implements SortUtil.Sort{ NuEcTww
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/* (non-Javadoc) y=HM]EH>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %]"eN{Uvn
*/ n{*A<-vL
public void sort(int[] data) { {JGXdp:SB
for(int i=data.length/2;i>2;i/=2){ jjJvyZi~J
for(int j=0;j insertSort(data,j,i); UlNx5l+k
} 7!;48\O]w
} i]$/& /
insertSort(data,0,1); BV"l;&F[
} L9Z\|L5
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/** c3aBPig\D
* @param data rbw~Ml0
* @param j y8.3tp
* @param i k-jlYHsA
*/ &P pb2
private void insertSort(int[] data, int start, int inc) { "=Xky,k
int temp; ']C" 'b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Tebu?bj
} '/U% -/@
} VX6M4<8
} 'hNRIM1
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} nN'>>'@>
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快速排序: O-uf^S4
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package org.rut.util.algorithm.support; =Sjf-o1V
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import org.rut.util.algorithm.SortUtil; N"[r_!
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/** v;.w*x8Jw
* @author treeroot ?QRoSQ6
* @since 2006-2-2 XjFaP {
* @version 1.0 @v~<E?Un
*/ w,zm$s ^
public class QuickSort implements SortUtil.Sort{ pY$DOr-r`
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/* (non-Javadoc) pP)> x*1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6^QSV@N|
*/ M<K}H8?
public void sort(int[] data) { :G4)edwe
quickSort(data,0,data.length-1); "ivSpec.V
} l\6.f_
private void quickSort(int[] data,int i,int j){ dTVh{~/
int pivotIndex=(i+j)/2; R^VmNj
file://swap Ae8P'FWB>
SortUtil.swap(data,pivotIndex,j); [A'9sxG
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int k=partition(data,i-1,j,data[j]); $wm8N.I3I
SortUtil.swap(data,k,j); K<vb4!9Z9
if((k-i)>1) quickSort(data,i,k-1); G\C>fwrP_
if((j-k)>1) quickSort(data,k+1,j); 0?w4
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} O_P8OA#|
/** fX/k;0l
* @param data QI4a@WB]ok
* @param i NOQSL T=
* @param j 2PViY,V|
* @return yP "D~u
*/ ./_4D}
private int partition(int[] data, int l, int r,int pivot) { S]<%^W'
do{ jc7NYoT:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l0BYv&tu
SortUtil.swap(data,l,r); rodr@
} 4<A+Tf
while(l SortUtil.swap(data,l,r); K!O7q~s[D
return l; -&0H Atc
} js[H $
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} =SK{|fBB
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改进后的快速排序: ' p!\[*e
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package org.rut.util.algorithm.support; P~@.(hed
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import org.rut.util.algorithm.SortUtil; 9$ =o({
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/** 8C4v
* @author treeroot m%.7l8vT
* @since 2006-2-2 UEH+E&BCC
* @version 1.0 ^~DClZ
*/ X+'B*K$
public class ImprovedQuickSort implements SortUtil.Sort { /9<62F@zJ"
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private static int MAX_STACK_SIZE=4096; gPY Cw?zQ
private static int THRESHOLD=10; icXeB_&cS
/* (non-Javadoc) gVN&?`k*?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =`f"8,5
*/ qVr?st
public void sort(int[] data) { KFf6um
int[] stack=new int[MAX_STACK_SIZE]; 3.V-r59
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int top=-1; 4^{~MgQWK+
int pivot; B'-L-]\H
int pivotIndex,l,r; b\^9::oY
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stack[++top]=0; (I ~r~5^
stack[++top]=data.length-1; -3|i5,f
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while(top>0){ +*Pj,+;W
int j=stack[top--]; 89l{h8R
int i=stack[top--]; *K=Yrisz
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pivotIndex=(i+j)/2; 0RkiD8U5
pivot=data[pivotIndex]; PJ'.s
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SortUtil.swap(data,pivotIndex,j);
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file://partition "Rq)%o$Z
l=i-1; '/GZ,~q
r=j; #_4JTGJ
do{ N-<m/RS
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IWP[?U=
SortUtil.swap(data,l,r); JTfG^Nv>K
}
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while(l SortUtil.swap(data,l,r); _sI\^yZd
SortUtil.swap(data,l,j); Q??nw^8Hi
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if((l-i)>THRESHOLD){ i~;Yrc%AEX
stack[++top]=i; e2*Fe9:
stack[++top]=l-1; RMO6k bfP
} XdGA8%^cY
if((j-l)>THRESHOLD){ "%fvA;
stack[++top]=l+1; )Qixde>]p
stack[++top]=j; zx=AT
} (Gpk;DD
HzD=F3\r|
} RlnJlY/
file://new InsertSort().sort(data); /6d:l>4
insertSort(data); UJ1Ecob
} ^.;
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/** G2e0\}q
* @param data 6<+ 8[o
*/ H_+F~P5RC
private void insertSort(int[] data) { (b4;c=<[{
int temp; R8YA"(j!L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _$YT*o@0J
} ye-R
} Fu6~8uDV{{
} CxW-lU3G`
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} >djTJ>dl_u
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归并排序: k| Ye[GM*
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package org.rut.util.algorithm.support; SFRQpQ06
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import org.rut.util.algorithm.SortUtil; @[(<oX%
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/** -L)b;0%
* @author treeroot Z2wgfP`
* @since 2006-2-2 f0,,<ib.w
* @version 1.0 |)\{Rufb
*/ 9Di@r!Db
public class MergeSort implements SortUtil.Sort{ -yH8bm'0"
sHi *\
/* (non-Javadoc) rS/}!|uAu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +~L26T\8
*/ (hv>vfY@
public void sort(int[] data) { 9X6l`bo'
int[] temp=new int[data.length]; AyUiX2=w1
mergeSort(data,temp,0,data.length-1); BvA09lK
} @3@oaa/v
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private void mergeSort(int[] data,int[] temp,int l,int r){ V=LJ_T"z0
int mid=(l+r)/2; 6xsB#v*
if(l==r) return ; $7bl,~Z
mergeSort(data,temp,l,mid); I||4.YT
mergeSort(data,temp,mid+1,r); lImg+r T{
for(int i=l;i<=r;i++){ 6rD
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