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。 Z]2z*XD
插入排序: q2`mu4B
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package org.rut.util.algorithm.support; Jc5YGj 7
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import org.rut.util.algorithm.SortUtil; ]xb2W~
/** $Fc}K+
* @author treeroot T.;U~<
* @since 2006-2-2 "B"ql-K
* @version 1.0 "mU2^4q
*/ lF46W
public class InsertSort implements SortUtil.Sort{ qJl DQc-
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/* (non-Javadoc) {`)oxzR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6kR3[]:16v
*/ *Ev8f11i&
public void sort(int[] data) { 8~.8"gQ
int temp; n) HV:8j~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @_c&lToj_
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冒泡排序: r~,3
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package org.rut.util.algorithm.support; n
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import org.rut.util.algorithm.SortUtil; Sc}Rs
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/** l;aO"_E1m
* @author treeroot 7NvRZ!
* @since 2006-2-2 ]*)l_mut7
* @version 1.0 s6;ZaU
*/ wF6a*b@v
public class BubbleSort implements SortUtil.Sort{ 0f3>s>`M
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/* (non-Javadoc) hQL@q7tUr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @l_rB~
*/ ?e+y7K}"]
public void sort(int[] data) { G$/Qcr6W<
int temp; 7g o Rj
for(int i=0;i for(int j=data.length-1;j>i;j--){ k"/}9[6:U5
if(data[j] SortUtil.swap(data,j,j-1); 1[a#blL6W
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} 6*|EB|%n
} EQHCw<e
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选择排序: R"F: (
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package org.rut.util.algorithm.support; M4d4b
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import org.rut.util.algorithm.SortUtil; c,G[R k
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/** bQ0+Y?,+/
* @author treeroot !0KNA1w,
* @since 2006-2-2 6s!=de
* @version 1.0 1dy"
*/ v//Drj
public class SelectionSort implements SortUtil.Sort { mD?={*7%
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/*
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* (non-Javadoc) uF
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fLkC|
*/ X:(t,g*7
public void sort(int[] data) { %~lTQCPE
int temp; A- #c1KU!
for (int i = 0; i < data.length; i++) { PvxU.
int lowIndex = i; es$<Vkbp
for (int j = data.length - 1; j > i; j--) { "1Y DT-I"
if (data[j] < data[lowIndex]) { B6!ni@$M8X
lowIndex = j; X#MC|Fzy@
} wu}Zu
} B/JMH 1r
SortUtil.swap(data,i,lowIndex); Y5mk*Q#q
} 97}l`z;Z
} %w3tzE1Hq
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Shell排序: BGO
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package org.rut.util.algorithm.support; =cx_3gCr{
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import org.rut.util.algorithm.SortUtil; S=`#X,Wo
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/** t RTJ Q
* @author treeroot M&rbXi.
* @since 2006-2-2 _J_QB]t
* @version 1.0 ?Vi U%t8J5
*/ z{U^j:A
public class ShellSort implements SortUtil.Sort{ <7MxI@\
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/* (non-Javadoc) OI^qX;#Kd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i%r+/D)KvG
*/ mbIHzzW>
public void sort(int[] data) { %hRH80W|
for(int i=data.length/2;i>2;i/=2){ wJWofFz
for(int j=0;j insertSort(data,j,i); N8{
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} 6[a;83
} lMjeq.5nP
insertSort(data,0,1); :-T[)Q+-3
} ,GF(pCZzG
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/** [85tZr]
* @param data >\s+A2P
* @param j x\Kt}/9 7e
* @param i iz6+jHu'l
*/ mfgUf
private void insertSort(int[] data, int start, int inc) { H66F4i
int temp; }Y3*X:i7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (ZD~Q_O-
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} ;fm>
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快速排序: tAS[T9B
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package org.rut.util.algorithm.support; Oa'T$'
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import org.rut.util.algorithm.SortUtil; !/EN
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/** E*#5OT
* @author treeroot )bB
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* @since 2006-2-2 >d^DN;p
* @version 1.0 #9]O92t2UV
*/ 3^Z@fC
public class QuickSort implements SortUtil.Sort{ 'LLpP#(
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/* (non-Javadoc) #} `pj}tQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6=jL2cqx
*/ Lz`_&&6
public void sort(int[] data) { x Z`h8
quickSort(data,0,data.length-1);
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} dwUs[v
private void quickSort(int[] data,int i,int j){ NrfAr}v'E
int pivotIndex=(i+j)/2; 8:"s3xaO3
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SortUtil.swap(data,pivotIndex,j); YZ/2:[b
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int k=partition(data,i-1,j,data[j]); m~8=?R+m
SortUtil.swap(data,k,j); *30T$_PiX|
if((k-i)>1) quickSort(data,i,k-1); H:,Hr_;nC
if((j-k)>1) quickSort(data,k+1,j); c^}DBvG,
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} jUrUM.CJ\N
/** 4-W~1
* @param data G5!!^p~
* @param i y6 gaoj
* @param j FtybF
* @return fWl #CI\]
*/ Kd7 Lpw1u]
private int partition(int[] data, int l, int r,int pivot) { !w:pb7+G
do{ 3Hh u]5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5_4=(?<
SortUtil.swap(data,l,r); +pbP;zu
} O\}w&BE:h
while(l SortUtil.swap(data,l,r); Vu Ey`c
return l; <l$ vnq
} 5O:4-}hz
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改进后的快速排序: %H=^U8WB
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package org.rut.util.algorithm.support; D1Q]Z63,
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import org.rut.util.algorithm.SortUtil; ]N6UY
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/** ;rt\
* @author treeroot d"}lh:L9
* @since 2006-2-2 X9ec*x
* @version 1.0 }C5Fvy6uz
*/ [.nkNda5)v
public class ImprovedQuickSort implements SortUtil.Sort { j`_tb
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private static int MAX_STACK_SIZE=4096; +Q+!#
private static int THRESHOLD=10; kf_*=ER
/* (non-Javadoc) 5)p! }hWs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X92I==-w
*/ ~?KbpB|
public void sort(int[] data) { M0woJt[&
int[] stack=new int[MAX_STACK_SIZE]; BJnysQ
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