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。 Wi5|9
插入排序: 3.0c/v5Go
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package org.rut.util.algorithm.support; {e%abr_B
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import org.rut.util.algorithm.SortUtil; Q kZM(pG
/** eE{L>u
* @author treeroot 7
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* @since 2006-2-2 uBTT {GGQ
* @version 1.0 m3(T0.j0P
*/ -n
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public class InsertSort implements SortUtil.Sort{ :]^P^khK
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/* (non-Javadoc) a!:8`X~[/$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V0 F30rK
*/ zn
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public void sort(int[] data) { c9uT`h
int temp; !~N4}!X3du
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N
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} rc$!$~|I3Z
} 6}T%m?/ }
} W|#ev*'F
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冒泡排序: _0*>I1F~
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package org.rut.util.algorithm.support; -k
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import org.rut.util.algorithm.SortUtil; M#cr*%
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/** GeaDaYh#T
* @author treeroot 0Mu8ZVI{
* @since 2006-2-2 o$ce1LO?|N
* @version 1.0 D w=Z_+J
*/ n6-Ic',;
public class BubbleSort implements SortUtil.Sort{ iL_F*iK5
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/* (non-Javadoc) z>33O5U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +w.Kv
;
*/ S%X\,N
public void sort(int[] data) { VMIX$#
int temp; H~|%vjH
for(int i=0;i for(int j=data.length-1;j>i;j--){ ARdGh_yJ&
if(data[j] SortUtil.swap(data,j,j-1); _Hu2[lV
} bjBeiKH
} )c*k_/4
} p,iCM?[|
} t/*K#]26
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} 8M|)ojH
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选择排序: *fl{Y(_OO
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package org.rut.util.algorithm.support; Yc82vSG'
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import org.rut.util.algorithm.SortUtil; As+;qNO
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/** vzcBo%
* @author treeroot uR;-eK
* @since 2006-2-2 l-S'ATZ0p
* @version 1.0 T5azYdzJy
*/ F[kW:-ne@Z
public class SelectionSort implements SortUtil.Sort { zZ9<4"CIk
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/* gXu^"
* (non-Javadoc) AM[jL'r|
* % R|"Afa=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e[QxFg0E
*/ )4~sQ^}
public void sort(int[] data) { VS9]po>=
int temp; :@ E1Pun?
for (int i = 0; i < data.length; i++) { |jk-@ Z*
int lowIndex = i; }@14E-N=
for (int j = data.length - 1; j > i; j--) { ;}WtJ&y=M
if (data[j] < data[lowIndex]) { P-+M,>vNy[
lowIndex = j; ZS XRzH~0
} WY"Y)S
} FKox0Jmh=
SortUtil.swap(data,i,lowIndex); @?Gw|bP
} TH>?Gi)"
} o8'Mks
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} xegQRc
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Shell排序: abo>_"9-
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package org.rut.util.algorithm.support; QtY hg$K3
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import org.rut.util.algorithm.SortUtil; S,9NUt
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/** PZuq'^p
* @author treeroot (/U)>%n
* @since 2006-2-2 U|J$?aFDr
* @version 1.0 5fu+rU-#
*/ *:\:5*SY
public class ShellSort implements SortUtil.Sort{ "Ap$Jl B
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/* (non-Javadoc) 9q1HSJ1)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E- )VPZ1D
*/ ]3t1=+
public void sort(int[] data) { x}?DkFuxb
for(int i=data.length/2;i>2;i/=2){ _ktK+8*6`
for(int j=0;j insertSort(data,j,i); +UK%t>E8
} Q(|PZng
} o)%-l4S
insertSort(data,0,1); 2W3NL|P
} ~=:2~$gsn
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/** K`QOU-M@}
* @param data [DZqCo
* @param j DS:>/m>)
* @param i Ot`LZ"H:
*/ F qeV3N
private void insertSort(int[] data, int start, int inc) { Zc'|!pT _
int temp; /m`}f]u
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *jM_ wwG
} \3Dk5cSDk+
} <<=e9Lh
} *Y85DEA
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} O^9CV*]!n
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快速排序: jR{-
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package org.rut.util.algorithm.support; TB7>s~)47E
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import org.rut.util.algorithm.SortUtil; vBh;
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/** DR:8oo&E
* @author treeroot Y5dD|]F|
* @since 2006-2-2 ]} 61vV
* @version 1.0 q$r&4s)To
*/ sl/=g
public class QuickSort implements SortUtil.Sort{ z Yw;q3"
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/* (non-Javadoc) @#RuSc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gNShOu
*/ S4cpQq.
public void sort(int[] data) { 'X7%35Y
quickSort(data,0,data.length-1); o#qH2)tb
} CRH{E}>
private void quickSort(int[] data,int i,int j){ 25 CZmsg
int pivotIndex=(i+j)/2; x_*%*H
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SortUtil.swap(data,pivotIndex,j); AXwaVLEBQ
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int k=partition(data,i-1,j,data[j]); u!Xb?:3uj
SortUtil.swap(data,k,j); &
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if((k-i)>1) quickSort(data,i,k-1); 2w+U$6e C
if((j-k)>1) quickSort(data,k+1,j); lnS(&`oh\=
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} UMV)wy|j
/** @;vNX*-J
* @param data z{9=1XY
* @param i %Y~>Jl
* @param j dsJm>U)
* @return N0i!l|G6
*/ w OI^Q~
private int partition(int[] data, int l, int r,int pivot) { .it#`Yz;
do{ vCw<G6tD
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UuU/c-.
SortUtil.swap(data,l,r); *?/tO,
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} BZK2$0
while(l SortUtil.swap(data,l,r); C5xag#Z1
return l; zuSq+pxL@
} R}8XRe
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} _;56^1'T
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改进后的快速排序: e}'gvm
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package org.rut.util.algorithm.support; E<>*(x/\e
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import org.rut.util.algorithm.SortUtil; "(v%1tGk
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/** hoa7
* @author treeroot H{l)
* @since 2006-2-2 ^$v3eKA
* @version 1.0 rLU'*}
*/ -KH)J
public class ImprovedQuickSort implements SortUtil.Sort { T*?s@$)m4
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private static int MAX_STACK_SIZE=4096; FmEc`N9\v
private static int THRESHOLD=10; }bH$O%
/* (non-Javadoc) Q8T`wd$D#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -w1@!Sdd
*/ J'b<z.OW
public void sort(int[] data) { > _ <'D
int[] stack=new int[MAX_STACK_SIZE]; @@@=}!<H=
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int top=-1; &?0:v`4Y
int pivot; s,6`RI%
int pivotIndex,l,r; y}FZD?"
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stack[++top]=0; |?d#eQ9a
stack[++top]=data.length-1; #sTEQjJ,J
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while(top>0){ pd3,pQ
int j=stack[top--]; Y4E/?37j
int i=stack[top--]; >@_im6
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pivotIndex=(i+j)/2; W3r?7!~
pivot=data[pivotIndex]; \8S~c8Z~
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SortUtil.swap(data,pivotIndex,j); aZ X mlq
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file://partition gn8|/ev
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r=j; k1^\|
do{ LJFG0 W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ej=3/RBsV
SortUtil.swap(data,l,r); |F[=b'?
}
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while(l SortUtil.swap(data,l,r); !ErH~<f%K
SortUtil.swap(data,l,j); 6KHN&P
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if((l-i)>THRESHOLD){ x}TS
stack[++top]=i; =PkO!Mm8
stack[++top]=l-1; POAw M
} H#i{?RM@l
if((j-l)>THRESHOLD){ !}f1`/
stack[++top]=l+1; g13 rx%-
stack[++top]=j;
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} ehNzDr\s
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} S0d~.ah30
file://new InsertSort().sort(data); z'7[T ie
insertSort(data); b|xpNd-
} 2 PqS%`XiS
/** T!RT<&
* @param data 1PH:\0}
*/ g7\,{Bw#E
private void insertSort(int[] data) { ?S
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int temp; q%(EYM5Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dY7'OAUyVl
} )+P]Vf\jH
} aE"[5*a
} G{Yz8]m
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} ^qGb%! l
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归并排序: gF?[rqz{
A#8q2n270*
package org.rut.util.algorithm.support; KLoE&ds
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import org.rut.util.algorithm.SortUtil; t_z,>,BqJ
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/** d}'U?6ob
* @author treeroot
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* @since 2006-2-2 r]@0eb
* @version 1.0 (*p ,T
*/ ]rehW}
public class MergeSort implements SortUtil.Sort{ 7 c|bc6?
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/* (non-Javadoc) rxnFrx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p)aeH`;O
*/ \Ig68dFf%
public void sort(int[] data) { K5Q43e1
int[] temp=new int[data.length]; {\H/y c|@
mergeSort(data,temp,0,data.length-1); 1CU>L[W)
} ~{hxR)x9
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private void mergeSort(int[] data,int[] temp,int l,int r){ S$TmZk=
int mid=(l+r)/2; M<O{O}t<
if(l==r) return ; Vd^g9
mergeSort(data,temp,l,mid); +4;uF]T
mergeSort(data,temp,mid+1,r); 5|3e&
for(int i=l;i<=r;i++){ zGKyN@o
temp=data; C+[%7vF1
} YHNR3
int i1=l; Snp|!e
int i2=mid+1; d)f@ 5/<
for(int cur=l;cur<=r;cur++){ Y3.$G1{#0w
if(i1==mid+1) X cr
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data[cur]=temp[i2++]; r{\1wt
else if(i2>r) >r`b_K
data[cur]=temp[i1++]; &