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。 Q{Jz;6"
插入排序: +pnT6kU|
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package org.rut.util.algorithm.support; Go^W\y
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import org.rut.util.algorithm.SortUtil; .[+8D=
/** q(\$-Dk.Vv
* @author treeroot %Jq(,u
* @since 2006-2-2 Ra;e#)7X
* @version 1.0 QtW5;A-h
*/ [t: =%&B
public class InsertSort implements SortUtil.Sort{ 'N,x=1R5
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/* (non-Javadoc) <T+Pw7X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _U.8\J2
*/ 23U9+
public void sort(int[] data) { 66[yL(*+
int temp; o//N"S.)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }u5 Mexs
} !:c7I@
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冒泡排序: f]J?-ks
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package org.rut.util.algorithm.support; YxGIv8O]
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import org.rut.util.algorithm.SortUtil; '"GdO;}&
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/**
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* @author treeroot \%mR*J+
* @since 2006-2-2 B5=L</Aj
* @version 1.0 Mf%/t HK
*/ ~ Y4H)r
public class BubbleSort implements SortUtil.Sort{ ;}.jRmnJ
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/* (non-Javadoc) X.j#??
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j<"0ym)A
*/ '/z.\ S
public void sort(int[] data) { MGN*i9CE
int temp; y!blp>V6
for(int i=0;i for(int j=data.length-1;j>i;j--){ PcM:0(,G
if(data[j] SortUtil.swap(data,j,j-1); '=\]4?S
} \^|ncu:T
} :*0k:h6g
} rYJt;/RtR}
} 8ENAif
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} uLe+1`Y5Ux
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选择排序: qf4|!UR{
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package org.rut.util.algorithm.support; 5\:#-IYJ
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import org.rut.util.algorithm.SortUtil; @#*B|lHE
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/** qW;nWfkYC
* @author treeroot 3j]La
* @since 2006-2-2 j(va#f#
* @version 1.0 ZS^EKz~ +
*/ YjvqU /[3
public class SelectionSort implements SortUtil.Sort { CSt6}_c!
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/* OWtN=Gk
* (non-Javadoc) I BES$[
* C\$7C5/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H# 2'\0u
*/ X k<X:,T
public void sort(int[] data) { #/\FB'zC
int temp; *5*d8;@>
for (int i = 0; i < data.length; i++) { @ mtv2P`
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { T(J&v|FK
if (data[j] < data[lowIndex]) { wQPjo!FEX
lowIndex = j; ~Z.lvdA_5
} MbYa6jrF
} u^!-Z)W
SortUtil.swap(data,i,lowIndex); `=q)-y_C
} \W/cC'
} +]5JXt^
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} zcIZJVYA
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Shell排序: |Vd)7/LN
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package org.rut.util.algorithm.support; Nm#KHA='Z
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import org.rut.util.algorithm.SortUtil; (8=Zr0He
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/** B0Xn9Tvk
* @author treeroot A3Ltk 2<
* @since 2006-2-2 7Py8!
* @version 1.0 R:^GNra;
*/ .hETqE` E
public class ShellSort implements SortUtil.Sort{ ywi
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/* (non-Javadoc) /+02BP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 33"{"2==`
*/ 0($MN]oZa
public void sort(int[] data) { A/BL{ U}
for(int i=data.length/2;i>2;i/=2){ l ^\5Jr03
for(int j=0;j insertSort(data,j,i); Oyj!N`&z@
} Jw;J$
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} Bv3?WW
insertSort(data,0,1); VPtA
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} QJOP *<O
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/** )oHIRsr
* @param data .`xcR]PQ
* @param j "QGP]F
* @param i mxP{"6
*/ o?/N4$&5l
private void insertSort(int[] data, int start, int inc) { aViJ?*
int temp; Q$Vxm+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NWX~@Rg
} D@O'8
} Hdj0! bUx
} ]!h%Jlu
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} YR~g&E#U^
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快速排序: %)\Cwl
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package org.rut.util.algorithm.support; 3cQTl5,
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import org.rut.util.algorithm.SortUtil; a]
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/** _RY<-B
* @author treeroot !>9*$E
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* @since 2006-2-2 HHa7Kh|-H
* @version 1.0 Q.M3rRh
*/ NjsP"
public class QuickSort implements SortUtil.Sort{ @oYTJd(v{
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/* (non-Javadoc) HmRwh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |w /txn8G|
*/ fIWQ+E
public void sort(int[] data) { ?CL1^N%
quickSort(data,0,data.length-1); UxD1+\N6?
} >D<nfG<s Z
private void quickSort(int[] data,int i,int j){ k];
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int pivotIndex=(i+j)/2; )k29mqa`
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SortUtil.swap(data,pivotIndex,j); --",}%-
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int k=partition(data,i-1,j,data[j]); vk;>#yoox
SortUtil.swap(data,k,j); :M|bw{P*
if((k-i)>1) quickSort(data,i,k-1); \+L_'*&8
if((j-k)>1) quickSort(data,k+1,j); UY%@i
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} (IJf2
/** %z8@;
* @param data jCKRoao
* @param i &\Cvrxa
* @param j S)JZb_
* @return ]~kqPw<R
*/ sY1@ch"
private int partition(int[] data, int l, int r,int pivot) { >SfC '* 1
do{ n (cSfT
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ufEt"P-X.
SortUtil.swap(data,l,r); v6f$N+4c
} K=`*cSU>
while(l SortUtil.swap(data,l,r); P]dDTh~e~
return l; #)cRD#0
} *xL#1
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} o#0NIn"GS/
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改进后的快速排序: DB?_E{y]
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package org.rut.util.algorithm.support; IwWo-WN7.
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import org.rut.util.algorithm.SortUtil; )](8{}wo
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/** :nZ*x=aq
* @author treeroot TU[f"!z^
* @since 2006-2-2 P?]q*KViM
* @version 1.0 |l)Oy#W
*/ /!AdX0dx
public class ImprovedQuickSort implements SortUtil.Sort { q &jW{
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private static int MAX_STACK_SIZE=4096; _MMz x2}
private static int THRESHOLD=10; LGod"8~U
/* (non-Javadoc) \N"K^kR4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6e~+@S
*/ n]8_]0{qi
public void sort(int[] data) { mD?={*7%
int[] stack=new int[MAX_STACK_SIZE]; qyY/:&E, Z
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int top=-1; u+pZ<Bb
int pivot; h}oV)z6
int pivotIndex,l,r; 4/2@^\?i)
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stack[++top]=0; UH5A;SrTqR
stack[++top]=data.length-1; qUQP.4Z9 5
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while(top>0){ ZRa~miKyM
int j=stack[top--]; m='_O+ $
int i=stack[top--]; 0o
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pivotIndex=(i+j)/2; y]ya.YG
pivot=data[pivotIndex]; `n`HwDo;i
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SortUtil.swap(data,pivotIndex,j); OuPfB
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file://partition 9N<TJp,q
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r=j; _G^ 4KwYp
do{ |1+mHp
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M(Yt9}Z%Y
SortUtil.swap(data,l,r); R\u5!M$::
} FaG&U
while(l SortUtil.swap(data,l,r); G8b`>@rZ
SortUtil.swap(data,l,j); W)odaab7
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if((l-i)>THRESHOLD){ iis}=i7|
stack[++top]=i; /jn0Xh
stack[++top]=l-1; zhI"++
} 8;(3fSNC
if((j-l)>THRESHOLD){ a#/~rNRY
stack[++top]=l+1; 0(^N
stack[++top]=j; {_jbFJ
} m*>gG{3;
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} gt(!I^LHYc
file://new InsertSort().sort(data); mqQC`Aqx:
insertSort(data); 8iUKG
} {jEEAH)
/** FBA th
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* @param data rJCu6
*/ lnrs4s Km
private void insertSort(int[] data) { i#Z#(D
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int temp; (ZD~Q_O-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SA,+oq(
} kSjvY&n%
} F@-8J?Hl:
} *#o2b-[V
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} tAS[T9B
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归并排序: 5Ln !>,
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package org.rut.util.algorithm.support; =O~Y6|
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import org.rut.util.algorithm.SortUtil; hJ*#t<.<P;
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/** ^-qz!ib
* @author treeroot Mdy4H[Odq
* @since 2006-2-2
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* @version 1.0 8AmB0W>e
*/ |DXi~
public class MergeSort implements SortUtil.Sort{ <-=g)3_
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/* (non-Javadoc) NV;T*I8O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NrfAr}v'E
*/ &B} ,xcNO
public void sort(int[] data) { uP2Wy3`V
int[] temp=new int[data.length]; 'F Cmbry
mergeSort(data,temp,0,data.length-1); Gs(;&fw
} *30T$_PiX|
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7y=1\KW(
int mid=(l+r)/2; G,,f' >
if(l==r) return ; p1
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mergeSort(data,temp,l,mid); kFQx7m
mergeSort(data,temp,mid+1,r); J?qikE&
for(int i=l;i<=r;i++){ m/ngPeZ
temp=data; l+<AM%U\ V
} \!Ap<
int i1=l; } v3w-
int i2=mid+1; NsL!AAN[V
for(int cur=l;cur<=r;cur++){ QzV%m0
if(i1==mid+1) B8?j"AF
data[cur]=temp[i2++]; muIJeQ.C
else if(i2>r) co>IJzg
data[cur]=temp[i1++]; 5ih5=qX
else if(temp[i1] data[cur]=temp[i1++]; :VlMszy}B3
else rh6 e
data[cur]=temp[i2++]; k3&/Ei5
} agnEYdM_
} k~=P0";
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} Bn*QT:SKC
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改进后的归并排序: FQ]5W |e
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package org.rut.util.algorithm.support; [.nkNda5)v
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import org.rut.util.algorithm.SortUtil; j&