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。 gWk?g^KJL
插入排序: pseN!7+or
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package org.rut.util.algorithm.support; ,r5'nDV=d
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import org.rut.util.algorithm.SortUtil; QT8GP?F
/** I3I1<}>]Z
* @author treeroot Yamu"#
* @since 2006-2-2 X&LaAqlSG
* @version 1.0 k2 _i;v
*/ cePe0\\
public class InsertSort implements SortUtil.Sort{ 6
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/* (non-Javadoc) @GVONluyU`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CE5A^,EsB
*/ hr@kU x
public void sort(int[] data) { $.+_f,tU
int temp; 0#G@F5; <
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 42oW]b%P{;
} B}(r>8?dm
} ~:JoKm`vU
} ?<;9=l\Q
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冒泡排序: 2RbK##`vC
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package org.rut.util.algorithm.support; AAXlBY6Y-
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import org.rut.util.algorithm.SortUtil; c80Ffq
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/** p3,m),
* @author treeroot [%c5MQ?H
* @since 2006-2-2 _|Uv7>}J^
* @version 1.0 ?S<`*O
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*/ MvKr~
public class BubbleSort implements SortUtil.Sort{ O7"16~a
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/* (non-Javadoc) wi/qI(O!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U-*`I?~=4
*/ 9oU1IT9
public void sort(int[] data) { ('~}$%C
int temp; Yycfb
for(int i=0;i for(int j=data.length-1;j>i;j--){ a.z)m}+
if(data[j] SortUtil.swap(data,j,j-1); |1pDn7
} BROn2aSx%
} \1He9~6
} Y'^+ KU
} <dGph
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} [.Rdq]w6
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选择排序: uXo uN$&
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package org.rut.util.algorithm.support; \
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import org.rut.util.algorithm.SortUtil; $'x#rW>v
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/** &J\<"3
* @author treeroot FeT|
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* @since 2006-2-2 i+Lqj
* @version 1.0 `m`Y3I
*/ `%/w0,0
public class SelectionSort implements SortUtil.Sort { :w<Ga8\tZ
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/* R=J5L36F
* (non-Javadoc) P:>]a$Is
* 5S*aZ1t18
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $DlO<
*/ Q_)$Ha{>H,
public void sort(int[] data) { r>ag(^J\
int temp; D0}r4eA
for (int i = 0; i < data.length; i++) { kQ`p\}7_
int lowIndex = i; _+9o'<#u(
for (int j = data.length - 1; j > i; j--) { >}E
if (data[j] < data[lowIndex]) { Ys0N+
lowIndex = j; n52Q-6H
} $jOp:R&I^3
} "s.hO0Z
SortUtil.swap(data,i,lowIndex); cN:dy#
} E*x ct-m#
} J(:y-U
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Shell排序: ^GS\(egt
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package org.rut.util.algorithm.support; q#O8Fv
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import org.rut.util.algorithm.SortUtil; B|"-Ed
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/** Vb)NWXmyu
* @author treeroot aL&nD1f=!-
* @since 2006-2-2
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* @version 1.0 ?IG[W+M8
*/ s o7.$]aV
public class ShellSort implements SortUtil.Sort{ qfX26<q
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/* (non-Javadoc) N F,<^ u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j[A:So
*/ [:zP]l.|
public void sort(int[] data) { r&+w)U~
for(int i=data.length/2;i>2;i/=2){ c,:nWf
for(int j=0;j insertSort(data,j,i); 81H9d6hqcD
} S%jW}v';
} ;Z9(ll:<$
insertSort(data,0,1); N9s+Tm
} L_tjclk0J
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/** 1H?I?IT30
* @param data },@ex
* @param j fDRG+/q(+
* @param i nkzH}F=<
*/ Qff.QI,
private void insertSort(int[] data, int start, int inc) { x!6<7s
int temp; vY7@1_"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X}wo$t
} ]_j={0%
} p=m:^9/
} A&A{Thz
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} pekNBq
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快速排序: l.P;85/+
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package org.rut.util.algorithm.support; .Q^V,[on1T
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import org.rut.util.algorithm.SortUtil; ^#XQ2UN
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/** mGa :~x
* @author treeroot \XO'7bNu-
* @since 2006-2-2 &;sW4jnt
* @version 1.0 aU@1j;se@
*/ E
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public class QuickSort implements SortUtil.Sort{ ]V)*WP#a
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/* (non-Javadoc) eL<jA9cJ9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;E,i
*/ p:)=i"uL
public void sort(int[] data) { S503b*pM
quickSort(data,0,data.length-1); dai+"
} yzMGZi`ut
private void quickSort(int[] data,int i,int j){ i{16&4 '
int pivotIndex=(i+j)/2; UmArl)R/
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SortUtil.swap(data,pivotIndex,j); LIrebz
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int k=partition(data,i-1,j,data[j]); |MOz>1<a
SortUtil.swap(data,k,j); ddN G:
if((k-i)>1) quickSort(data,i,k-1); :>/6:c?atG
if((j-k)>1) quickSort(data,k+1,j); -L<FVB
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} h#c7v!g
/** )TEm1\
* @param data Y;'SD{On
* @param i f7 |Tp m
* @param j "LSzF_mK
* @return $ai;8)C6
*/ 5^R?+<rd
private int partition(int[] data, int l, int r,int pivot) { X7[gfKGL)N
do{ $$uMu{?0i
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); t-5Y,}j
} k]^ya?O]p
while(l SortUtil.swap(data,l,r); oh@Ha?
return l; !.-u'6e
} 0qIg:+l+
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} X#
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改进后的快速排序: ##}7cFX
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package org.rut.util.algorithm.support; G')zDx
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import org.rut.util.algorithm.SortUtil; jEwt1S V
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/** 74a@/'WbE
* @author treeroot oam;hmw
* @since 2006-2-2 o(H.1ESk
* @version 1.0
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*/ =R~zD4{"
public class ImprovedQuickSort implements SortUtil.Sort { 2gZ nrU
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private static int MAX_STACK_SIZE=4096; ?3 k_YN"
private static int THRESHOLD=10; znPh7{|<