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。 d1srV`
插入排序: kjLsk-
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package org.rut.util.algorithm.support; >< <$
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import org.rut.util.algorithm.SortUtil; ql#{=oGDnA
/** >,w\lf9
* @author treeroot rh:s
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* @since 2006-2-2 TTA{#[=7
* @version 1.0 d&PE,$XC
*/ ImUQ*0
public class InsertSort implements SortUtil.Sort{ "4Vi=* 2V
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/* (non-Javadoc) hYP6z^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SeRK7Q&_
*/ ,_"7|z wb
public void sort(int[] data) { ~6@c]:
int temp; D-TNFYYy2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1=9qAp;?o
} r+{!@`dYi
} E"9/YWv
} &X#x9|=&O
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} |0C|$2
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冒泡排序: ^F0k2pB
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package org.rut.util.algorithm.support; j:rs+1bc
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import org.rut.util.algorithm.SortUtil; x*,q
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/** ZXssvjWQV}
* @author treeroot 4*N@=v
* @since 2006-2-2 [3{:H"t
* @version 1.0 M(.uu`B
*/ )[y!m9Vn
public class BubbleSort implements SortUtil.Sort{ )H[h53bIq
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/* (non-Javadoc) ~_dBND?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K]H"qG.K
*/ z. _C*c
public void sort(int[] data) { ?{@!!te@3v
int temp; i#@ v_^ q
for(int i=0;i for(int j=data.length-1;j>i;j--){ gqO%^b)6
if(data[j] SortUtil.swap(data,j,j-1); b.mjQ
} TRr4`y%
} zn2"swhq\V
} >0g`U
} a>)_ `m
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} WV,?Ge
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选择排序: _-|yCo
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package org.rut.util.algorithm.support; ;9!yh\\
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import org.rut.util.algorithm.SortUtil; vjs|!O=oH
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/** H649J)v+m
* @author treeroot evndw>
* @since 2006-2-2 t(z(-G|&
* @version 1.0 cjy0s+>>
*/ bbQ10H
public class SelectionSort implements SortUtil.Sort { 8M3p\}O
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/* IxEQh)J X
* (non-Javadoc) k"DQbUy0L
* WRLu3nBx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ' F 6au[
*/ |04}zU%N
public void sort(int[] data) { ~Me&cT8
int temp; /_zF?5h
for (int i = 0; i < data.length; i++) { Y>dg10=
int lowIndex = i; BZ\EqB
for (int j = data.length - 1; j > i; j--) { |$.sB|_
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if (data[j] < data[lowIndex]) { ZaNyNxbp>z
lowIndex = j; 5Re`D|8
} R
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} v:J.d5
SortUtil.swap(data,i,lowIndex); eBYaq!t
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} ^)C$8:@
} 9sO{1rF
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} {*ko=77$*
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Shell排序: *xZQG9`kt
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package org.rut.util.algorithm.support; 8&2gM
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import org.rut.util.algorithm.SortUtil; H~_^w.P
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/** 6M<mOhp@}n
* @author treeroot N8L)KgM5#7
* @since 2006-2-2 V"2AN3~&
* @version 1.0 H,4,~lv|
*/ n_xQSVI0F
public class ShellSort implements SortUtil.Sort{ .2(@jx,[
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/* (non-Javadoc) ZZFI\o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HZr/0I?
*/ =DF@kR[CH"
public void sort(int[] data) { 1+i
for(int i=data.length/2;i>2;i/=2){ v0jz)z<#
for(int j=0;j insertSort(data,j,i); b]s1Q
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} `X.=uG+m
} v-r[~
insertSort(data,0,1); ("P mB?20
} u
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/** c;t(j'k`
* @param data BorfEv} SN
* @param j ["#A -S
* @param i +DV6oh
*/ C)3$";$5)
private void insertSort(int[] data, int start, int inc) { h}B# 'e
int temp; 6 peM4X
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); woH3?zR
} }Bod#|`
} $O]E$S${
} ae(]9 VW
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} 6'sFmC
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快速排序: PEQvEruZ}
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package org.rut.util.algorithm.support; 5@&i:vs5y
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import org.rut.util.algorithm.SortUtil; hk$nlc|$
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/** CyBM4qyH
* @author treeroot 23n8,} H,
* @since 2006-2-2 *
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* @version 1.0 Kp=3\) &
*/ $d??(
public class QuickSort implements SortUtil.Sort{ )i6U$,]
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/* (non-Javadoc) . =foXN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9q,JqB
*/ JpHsQ8<
public void sort(int[] data) { VV}fW"_ND
quickSort(data,0,data.length-1); C2,cyhr
} X9`C2fyVd
private void quickSort(int[] data,int i,int j){ :;#}9g9
int pivotIndex=(i+j)/2; w-Q 6
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file://swap FLnAN;
SortUtil.swap(data,pivotIndex,j); wM&x8 <
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int k=partition(data,i-1,j,data[j]); yI|?iBc7nC
SortUtil.swap(data,k,j); vheAh`u^&
if((k-i)>1) quickSort(data,i,k-1); OFAqP1o{$
if((j-k)>1) quickSort(data,k+1,j); {j=hQL3
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} LAVt/TcZS|
/** ;eEtdoy
* @param data H2_>Av{m
* @param i U+A(.+d.
* @param j Ky~~Cd$
* @return %Ja{IWz9L
*/ |(w#NE5
private int partition(int[] data, int l, int r,int pivot) { ;<)-*?m9
do{ SFPIr0 u
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;@-5lCvC(+
SortUtil.swap(data,l,r); /t 6u"I~
} Hr,gV2n
while(l SortUtil.swap(data,l,r); =/'*(\C2
return l; -8kW!F
} Eq.zCD8A
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} %>:)4A
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改进后的快速排序: V^5k>`A
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package org.rut.util.algorithm.support; cz~11j#
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import org.rut.util.algorithm.SortUtil; "7g8 d
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/** !<^j!'2
* @author treeroot @DKl<F
* @since 2006-2-2 pO+wJ|f
* @version 1.0 jJQfCOD$
*/ p~;z"Z
public class ImprovedQuickSort implements SortUtil.Sort { (2\ekct ^
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private static int MAX_STACK_SIZE=4096; ZTz(NS
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private static int THRESHOLD=10; x3F L/^S
/* (non-Javadoc) #K*q(ei,7h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]x{ H
*/ _^sSI<&m
public void sort(int[] data) { ^
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int[] stack=new int[MAX_STACK_SIZE]; !Kqj&y5
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int top=-1; _~&vs<
int pivot; en6AAr:U}
int pivotIndex,l,r; w)SxwlW}
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stack[++top]=0; tJfN6
stack[++top]=data.length-1; bD[W~ku
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while(top>0){ t4W0~7
int j=stack[top--]; 2Sd6b 2-
int i=stack[top--]; &`y_R'
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pivotIndex=(i+j)/2; p.Yg-CA
pivot=data[pivotIndex]; `l40awGCz
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SortUtil.swap(data,pivotIndex,j); c)~|#v
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file://partition _^$b$4)
l=i-1; %ycT}Lu
r=j; \V\ET
do{ |}Z"|-Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QN5N hs
SortUtil.swap(data,l,r); c`=hK*
} (MU7
while(l SortUtil.swap(data,l,r); xH-k~#
SortUtil.swap(data,l,j); j0NPd^
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if((l-i)>THRESHOLD){ j?ubh{Izm
stack[++top]=i; 5]ob;tAm
stack[++top]=l-1; e%7P$.
} aV#;o9H{
if((j-l)>THRESHOLD){ 9cPucKuj
stack[++top]=l+1; "Z?":|%7
stack[++top]=j; pl/$@K?L
} S$:S*6M@"
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} QZP;k!"w
file://new InsertSort().sort(data); {]N?DmF
insertSort(data); +a@SdWf
} }eK*)
/** \zDV|n~{w
* @param data .b)(_*
*/ 5WG@ ;K%
private void insertSort(int[] data) { 780MSFV8
int temp; ^?`,f>`M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hzVO.Q*
} }/FM#Xh
} %?wE/LU>
} EU~'n-
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} @3D%i#2o&[
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归并排序: S(xA}0]
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package org.rut.util.algorithm.support; ]c+'SJQ
j* ja)
import org.rut.util.algorithm.SortUtil; DzOJ{dF
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/** ?7s
* @author treeroot M"
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* @since 2006-2-2 n-WvIy
* @version 1.0 +g30frg+Gl
*/ 5lY9
public class MergeSort implements SortUtil.Sort{ g}h0J%s
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/* (non-Javadoc) J(L$pIM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yU`IyaazZ
*/ 3P>@ :
public void sort(int[] data) { _Y~?. hs^
int[] temp=new int[data.length]; v:b%G?o
mergeSort(data,temp,0,data.length-1); |9JYg7<
} LRgk9*@,
94/}@<d-=
private void mergeSort(int[] data,int[] temp,int l,int r){ --D`YmB
int mid=(l+r)/2; IC42O_^
if(l==r) return ; 69L&H!<i:
mergeSort(data,temp,l,mid); ]kvE+m&p}^
mergeSort(data,temp,mid+1,r); jlZNANR3
for(int i=l;i<=r;i++){ 7MfvU|D[d/
temp=data; Jl}7]cVq#
} {)xrg sB
int i1=l; }=)"uv
int i2=mid+1; }]) f^
for(int cur=l;cur<=r;cur++){ OMNdvrE*=O
if(i1==mid+1) Kep?=9r4+
data[cur]=temp[i2++]; AO]e^Q
else if(i2>r) 5$w1[}UUd
data[cur]=temp[i1++]; _E7eJSM.
else if(temp[i1] data[cur]=temp[i1++]; @n3PCH6:Ao
else BC+qeocg
data[cur]=temp[i2++]; ~A( Pa-
} tL|Q{+i
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} W[DB!ue
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} =#Jb9=zdR
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改进后的归并排序: z@}~2K
xCD+qP^
package org.rut.util.algorithm.support; kE}Ib4]J
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import org.rut.util.algorithm.SortUtil; 6ZJQ '9f
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/** #/6X44
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* @author treeroot P*Nl3?T
* @since 2006-2-2 %-.GyG$i
* @version 1.0 "tIx$?I
*/ ,'}ZcN2)
public class ImprovedMergeSort implements SortUtil.Sort { _\zfXHp
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private static final int THRESHOLD = 10; 9:>vl0
yo=d"*E4^
/* yDrJn*
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* (non-Javadoc) 2
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* 3]Mx,u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zjS<e
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*/ uq_SF.a'v
public void sort(int[] data) { `Hqu2
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int[] temp=new int[data.length]; %|~UNP$
mergeSort(data,temp,0,data.length-1); Y,r2m nq
} SQ[}]Tm;n
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private void mergeSort(int[] data, int[] temp, int l, int r) { ;DOz92X94
int i, j, k; g}7B0 yo
int mid = (l + r) / 2; '_%Jw:4k
if (l == r) P:o<kRj1
return; E7,\s
if ((mid - l) >= THRESHOLD) lPQH_+)Z"
mergeSort(data, temp, l, mid); X,b}d#\
else go@}r<