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。 @ci..::5
插入排序: K%+4M#jj5
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package org.rut.util.algorithm.support; ruvfp_:
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import org.rut.util.algorithm.SortUtil; m7g*zu2#
/** GT)7VF rL
* @author treeroot @$n
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* @since 2006-2-2 !CcDA/0
* @version 1.0 yDKH;o
*/ 7/51_=%kR
public class InsertSort implements SortUtil.Sort{ Z|$DchC
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/* (non-Javadoc) NWvIwt{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _<FUS'"
*/ J sz=5`
public void sort(int[] data) { g:a[N%[C
int temp; W
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;"x+V gS'
} E
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冒泡排序: T+&fUhSy
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; U364'O8_
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/** ufIvvZ*
* @author treeroot Cj-&L<
* @since 2006-2-2 yzp#
* @version 1.0 r8:"\%"f>
*/ !zF07.(E
public class BubbleSort implements SortUtil.Sort{ ~Jr'4%
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/* (non-Javadoc) K+!e1
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Ii5V
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*/ '(3 QyCD
public void sort(int[] data) { P@ew' JL%
int temp; 8`urkEI^r
for(int i=0;i for(int j=data.length-1;j>i;j--){ ub-e! {
if(data[j] SortUtil.swap(data,j,j-1); FEu"b@v
} g/!MEOVx
} UIyLtoxu
} %p )"_q!ge
} cMZy~>
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} YR-G:-(#b
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选择排序: UHvA43
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package org.rut.util.algorithm.support; 7)jN:+4N
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import org.rut.util.algorithm.SortUtil; ~SBb2*ID
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/** 9 ;p5z[jI
* @author treeroot mI,lW|/l,
* @since 2006-2-2 S,6/X.QBv
* @version 1.0 zgEN2d
*/ 0a{hCx|$J
public class SelectionSort implements SortUtil.Sort { 7`J2/(
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/* )~=8Ssu
* (non-Javadoc) ~nU9j"$
* -o%? ]S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &lSNI5l
*/ ,4t6Cq!
public void sort(int[] data) { s0;a j<J
int temp; InbB2l4G
for (int i = 0; i < data.length; i++) { UzaAL9k
int lowIndex = i; TU^ZvAO&
for (int j = data.length - 1; j > i; j--) { l 1k&@1"
if (data[j] < data[lowIndex]) { xRacgny:I
lowIndex = j; \XV8t|*
} /Q(boY{
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SortUtil.swap(data,i,lowIndex); uc@4fn
} EG t
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} SkmTW@v
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} dB6,pY(
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Shell排序: !;|#=A9
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package org.rut.util.algorithm.support; iKrk?B<
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import org.rut.util.algorithm.SortUtil; SXqB<j$.;
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/** ]-X6Cl
* @author treeroot bpZA%{GS
* @since 2006-2-2 uPl}NEwU|
* @version 1.0 &"K_R(kN
*/ :VP4: J^
public class ShellSort implements SortUtil.Sort{ __9FQ{Ra
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/* (non-Javadoc) mW'3yM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6H'A]0
*/ r+C4<-dT
public void sort(int[] data) { z8t;jw
for(int i=data.length/2;i>2;i/=2){ Fnak:R0
for(int j=0;j insertSort(data,j,i); pZ|{p{_j
} o{#aF=`{
} ?V!5VHa
insertSort(data,0,1); P'tXG
} '4i8&p`/
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/** P*iC#w]m
* @param data bI:W4y>I=
* @param j 5e,u*J]
* @param i |3e+ K.
*/ l%_K$$C
private void insertSort(int[] data, int start, int inc) { K:'^f? P
int temp; 85G-`T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (+(@P*c1
} o=7,U/{D!
} 6ScB:8M
} GB Yy^wjU
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} b_nE4>
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快速排序: o-H?q!
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package org.rut.util.algorithm.support; a r8iuwfZ
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import org.rut.util.algorithm.SortUtil; [G$ #jUt/O
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/** \O "`o4
* @author treeroot kH hp;<
* @since 2006-2-2 Ny7*MZ-
* @version 1.0 T>%
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*/ hJ xL|5Uo
public class QuickSort implements SortUtil.Sort{ MwRLv,&"
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/* (non-Javadoc) RN-gZ{AW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1i$VX|r
*/ f#:3TJV
public void sort(int[] data) { %f&Y=
quickSort(data,0,data.length-1); HBe*wk Pd
} Sk+XBX(}
private void quickSort(int[] data,int i,int j){ B@M9oNWHu
int pivotIndex=(i+j)/2; _:Xmq&<W
file://swap q&z'S
SortUtil.swap(data,pivotIndex,j); oB5\^V$
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int k=partition(data,i-1,j,data[j]); ULz<P
SortUtil.swap(data,k,j); dVB#Np
if((k-i)>1) quickSort(data,i,k-1); *KDTBd
if((j-k)>1) quickSort(data,k+1,j); LXX('d
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} $]_SPu
/** rwXpB<@l@
* @param data 03 gbcNo
* @param i 50Gr\
* @param j '(B -{}l
* @return ~wuCa!!A
*/ EQlb:;j
private int partition(int[] data, int l, int r,int pivot) { \54B
do{ &Iy5@8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9pnOAM}
SortUtil.swap(data,l,r); %Ve@DF8G
} 0yC~"u[N Y
while(l SortUtil.swap(data,l,r); `.pEI q^
return l; a~jb%i_
} mM&P&mz/D
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} 1z7+:~;l
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改进后的快速排序: `ZEFH7P
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package org.rut.util.algorithm.support; 2fr%_GNu
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import org.rut.util.algorithm.SortUtil; ^yB]_*WJ
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/** |x1OWm1:<
* @author treeroot c>D~MCNxg
* @since 2006-2-2 b>p_w%d[[J
* @version 1.0 >xo<i8<Miv
*/ 8[J%TWq%9
public class ImprovedQuickSort implements SortUtil.Sort { -(TC'
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private static int MAX_STACK_SIZE=4096; 5r
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private static int THRESHOLD=10; z{OL+-OY
/* (non-Javadoc) 5PeYQ-B|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WMC^G2 n
*/ 3G4WKg.^
public void sort(int[] data) { 1W>/4l
int[] stack=new int[MAX_STACK_SIZE]; _@>*]g
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int top=-1; Uzvd*>mv
int pivot; YQ:$m5ai
int pivotIndex,l,r; j;}-x1R
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stack[++top]=0; d)uuA;n
stack[++top]=data.length-1; ZVH 9je
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while(top>0){ Xk|a%%O*H
int j=stack[top--]; DI8I'c-P
int i=stack[top--]; Wtu-g**KN
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pivotIndex=(i+j)/2; TW&s c9
pivot=data[pivotIndex]; @xo8"kl
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SortUtil.swap(data,pivotIndex,j); -S]ercar
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file://partition $=\=80u/
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r=j; 0O'M^[=d.8
do{ #0r^<Yn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {'zS8
SortUtil.swap(data,l,r); )XonFI
} r&R~a9+)
while(l SortUtil.swap(data,l,r); cu}(\a
SortUtil.swap(data,l,j); UUWRC1EtI
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if((l-i)>THRESHOLD){ v0)
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stack[++top]=i; E!}'cxb^
stack[++top]=l-1; g0biw?
} o0No"8DnjH
if((j-l)>THRESHOLD){ l,Q`;v5|
stack[++top]=l+1; 31^/9lb
stack[++top]=j; 90+Vw`Gz=
} /'{vDxZf R
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} tBzE(vW
file://new InsertSort().sort(data); [K
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insertSort(data); XO?WxL9k]
} +?6]Vu&|f
/** SPb`Q"
* @param data g~21|Sa$[
*/ >yn?@ve@
private void insertSort(int[] data) { )2" g)9!
int temp; ("=q-6$G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FDuA5At
} ][Tw^r&
} {nSgiqd"28
} Bkq4V$D_
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} $G0e1)D
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归并排序: DmgDhNXKq
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package org.rut.util.algorithm.support; .=}\yYGe
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import org.rut.util.algorithm.SortUtil; MbYgGE,LA
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/** 81#x/&E]
* @author treeroot a++gwl
* @since 2006-2-2 )2E vZn
* @version 1.0 %Jl6e}!
*/ `>KNa"b%$
public class MergeSort implements SortUtil.Sort{ &'e+`\
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/* (non-Javadoc) =4x6v<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \``w>Xy8
*/ F',1R"/}
public void sort(int[] data) { ]Y$Wv9S6
int[] temp=new int[data.length]; nO`[C=|
mergeSort(data,temp,0,data.length-1); ^WWr8-
} s +S6'g--
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private void mergeSort(int[] data,int[] temp,int l,int r){ #('R`~
int mid=(l+r)/2; 8yI4=P"F,
if(l==r) return ; 6&