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。 .waj.9&[l
插入排序: K0o${%'@7
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package org.rut.util.algorithm.support; _-#o[>2[
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import org.rut.util.algorithm.SortUtil; uTz>I'f
/** {*g{9`
* @author treeroot {,6J*v"o
* @since 2006-2-2 P_mP ^L
* @version 1.0 `-cw[@uD
*/ x[)]u8^A
public class InsertSort implements SortUtil.Sort{ 9An\uH)mL
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/* (non-Javadoc) ]Lg~I#/#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZQir?1=
*/ )K::WqR%w)
public void sort(int[] data) { O[L#|_BnEO
int temp; 50A\Y)i_mZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1 |)CQ
} xQzW6H|
} lgK5E*^
} %|:j=/_
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冒泡排序: ~Al3Dv9x
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package org.rut.util.algorithm.support; :yi} CM4
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import org.rut.util.algorithm.SortUtil; H d7Vp:KM
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/** sKs`gi2
* @author treeroot SS8$.ot
* @since 2006-2-2 jLO$[c`;
* @version 1.0 P|lDW|}D@
*/ G;pmR^
public class BubbleSort implements SortUtil.Sort{ IZ^:wIKo{
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/* (non-Javadoc) V!yBH<X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1=9GV+`n
*/
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public void sort(int[] data) { 5 b,|6
int temp; =|empv#
for(int i=0;i for(int j=data.length-1;j>i;j--){ -`z%<)!Y
if(data[j] SortUtil.swap(data,j,j-1); n_Y7*3/b-o
} 0Krh35R_)F
} @;y@Hf'Jv
} [ybK
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选择排序: 8:*ZuR|~
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package org.rut.util.algorithm.support; Rg46V-"d,@
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import org.rut.util.algorithm.SortUtil; 9`VY)"rJ
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/** i-p,x0th
* @author treeroot f
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* @since 2006-2-2 p0l.f`B
* @version 1.0 VQ2'a/s
*/ GiK,+M"d
public class SelectionSort implements SortUtil.Sort { aZa1 eE
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/* 7zU~X,
* (non-Javadoc) U,fPG/9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >zw@!1{1
*/ hPGDN\#LD
public void sort(int[] data) { w~pe?j_F$
int temp; oOubqx
for (int i = 0; i < data.length; i++) { Z0'LD<
int lowIndex = i; mF4OLG3L0
for (int j = data.length - 1; j > i; j--) { )$a6l8
if (data[j] < data[lowIndex]) { E KN<KnU%
lowIndex = j; 1;{nU.If
} $83Qd
} /P46k4M1U
SortUtil.swap(data,i,lowIndex); i|/G!ht^e
} /|h+,]<
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Shell排序: k.)YFKi
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package org.rut.util.algorithm.support; T?jN/}qg
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import org.rut.util.algorithm.SortUtil; [(TmAEON
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/** d>#X+;-k
* @author treeroot g1 y@z8Z{
* @since 2006-2-2 O ]-8 %
* @version 1.0 K *1]P ar;
*/ 0HbCT3g.
public class ShellSort implements SortUtil.Sort{ --c)!Vxzx
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/* (non-Javadoc) J_|%8N{[x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) };Df ><
*/ n<b}6L}
public void sort(int[] data) { /S^>06{-+
for(int i=data.length/2;i>2;i/=2){ ^HTvw~]5
for(int j=0;j insertSort(data,j,i); |m*l/@1
} >lek@euqw
} $`vXI%|.
insertSort(data,0,1); }&s |~
} )MoHY
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/** <1x u&Z7
* @param data :8N
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* @param j w6lx&K-
* @param i ^Mhh2v
*/ L7xiq{t`Y
private void insertSort(int[] data, int start, int inc) { 9j-;-`$S
int temp; M9~'dS'XI
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f= }!c*l"
} **1=|aa:
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快速排序: auY?Cj'"fs
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package org.rut.util.algorithm.support; |A0U3$S=
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import org.rut.util.algorithm.SortUtil; XGYsTquSe
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/** 9 *v14c%
* @author treeroot @cx#'
* @since 2006-2-2 heb{i5el
* @version 1.0 ALInJ{X
*/ 5RY-.c4}
public class QuickSort implements SortUtil.Sort{ i`}9VaUG
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/* (non-Javadoc) *`Ge8?qC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *lheF>^
*/ (58r9WhS
public void sort(int[] data) { +OSSgY$
quickSort(data,0,data.length-1); j!0-3YKv
} x%W~@_
private void quickSort(int[] data,int i,int j){ ds{)p<LpT
int pivotIndex=(i+j)/2; ?01ru5ys/o
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SortUtil.swap(data,pivotIndex,j); PBL=P+
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int k=partition(data,i-1,j,data[j]); !<X/_+G\
SortUtil.swap(data,k,j); ?fc<3q"
if((k-i)>1) quickSort(data,i,k-1); )WvOa] :
if((j-k)>1) quickSort(data,k+1,j); 9Nz}'a;?>
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} %_>8.7
/** b`;&o^7gMO
* @param data g]?>6 %#rA
* @param i ,d^H Ag^j
* @param j ;vk>k0S
* @return Ca/N'|}^
*/ ]4lC/&nm
private int partition(int[] data, int l, int r,int pivot) { {9Q**U`w
do{ z'gJy
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]2@lyG#<<
SortUtil.swap(data,l,r); VjeF3pmBa
} 3?!c<^"e
while(l SortUtil.swap(data,l,r); ]&='E.f
return l; e_S,N0
} (8N E'd8
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} }p8iq
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改进后的快速排序: j:^gmZ;J
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package org.rut.util.algorithm.support; ?+{_x^
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import org.rut.util.algorithm.SortUtil; _]0<G8|Rv
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/** nHLMF7\
* @author treeroot hij
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* @since 2006-2-2 }YU\}T-P
* @version 1.0 TFXKC l
*/ $+U6c~^^
public class ImprovedQuickSort implements SortUtil.Sort { Dh68=F0
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private static int MAX_STACK_SIZE=4096; a3Xd~Qs
private static int THRESHOLD=10; {?}^HW9{
/* (non-Javadoc) {]4Zpev
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OgzKX>N`A
*/ gA] 3h8%w
public void sort(int[] data) { Xhpcu1nA
int[] stack=new int[MAX_STACK_SIZE]; JI&.d:
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int top=-1; wOEc~WOd
int pivot; i
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int pivotIndex,l,r; `2M*?.vk
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stack[++top]=0; EO/41O
stack[++top]=data.length-1; 5YgT*}L+,
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while(top>0){ py wc~dWvz
int j=stack[top--]; 9LSV^[QUH
int i=stack[top--]; ?*~sx=mC
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pivotIndex=(i+j)/2; dleCh+ny?
pivot=data[pivotIndex]; T^#d\2
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SortUtil.swap(data,pivotIndex,j); }>b@=5O
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file://partition onIZ&wrk
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r=j; _9<Mo;C
do{ ehZ/J5
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vPrlRG6
SortUtil.swap(data,l,r); D8WKy
} @z`eqG,']
while(l SortUtil.swap(data,l,r); oE,TA2
SortUtil.swap(data,l,j); 1So`]N4
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if((l-i)>THRESHOLD){ rrG}; A
stack[++top]=i; RW<4",
stack[++top]=l-1; &