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。 ?C`&*+
插入排序: UPGS/Xs]1
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package org.rut.util.algorithm.support; l\"wdS}
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import org.rut.util.algorithm.SortUtil; /1z3Q_M
/** r=cm(AHF
* @author treeroot mXK7y.9\
* @since 2006-2-2 j|DjO?._'
* @version 1.0 ,(v=ZeI
*/ E/{v6S{)Y
public class InsertSort implements SortUtil.Sort{ 4OTrMT$y
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/* (non-Javadoc) &, %+rvo}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %uQOAe55
*/ (4Ha'uqz
public void sort(int[] data) { *OU&`\bmE
int temp; fI"OzIJV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VxqoE]Dh
} qL2Sv(A Z!
} D^<5gRK?
} I/k/5
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冒泡排序: `+]e}*7$f
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; ,wB)hp
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/** @E%fAC
* @author treeroot c1}i|7/XSi
* @since 2006-2-2 ~aL&,0
* @version 1.0 \o<&s{6L
*/ ?O.'_YS
public class BubbleSort implements SortUtil.Sort{ 8umW>
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/* (non-Javadoc) 30<3DA_P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q4B(NYEu(
*/ /"
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public void sort(int[] data) { Nf1&UgX
int temp; ' )~G2Ys
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4O>0gK{w
if(data[j] SortUtil.swap(data,j,j-1); Z,:}H6Mj9
} yo]8QO]97
} (P|k$S?m
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选择排序: Ox^VU2K;&.
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package org.rut.util.algorithm.support; ?,oE_H
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import org.rut.util.algorithm.SortUtil; evro]&N{
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/** VdE$ig@
* @author treeroot b.mWB`59
* @since 2006-2-2 dhmrh5Uf
* @version 1.0 Np>0c-S
*/ @jT=SFf
public class SelectionSort implements SortUtil.Sort { o!sHK9hvJ)
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/* 3&5AbIZ
* (non-Javadoc) #)z7&nD
* N7#,x9+E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q|tzA10E
*/ CooOBk
public void sort(int[] data) { CQI\/oaO
int temp; jFGY`9Zw0
for (int i = 0; i < data.length; i++) { m?]=
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int lowIndex = i; oG'
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for (int j = data.length - 1; j > i; j--) { =aCd,4B}
if (data[j] < data[lowIndex]) { R~N'5#.*M
lowIndex = j; +{[E Ow
} Bt(U,nFB
} :8l#jU`y
SortUtil.swap(data,i,lowIndex); #(1R:z\:
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Shell排序: s,]z6L0
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package org.rut.util.algorithm.support; r)Fd3)e
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import org.rut.util.algorithm.SortUtil; /9(8ML#E
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/** B5MEE
* @author treeroot ;;<[_gp,E
* @since 2006-2-2 >IEc4
* @version 1.0 @h)X3X
*/ j\TS:F^z
public class ShellSort implements SortUtil.Sort{ Xf*}V+&WN
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/* (non-Javadoc) ?oulQR6:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M<cm]
*/ w_9[y
public void sort(int[] data) { %lqrq<Xn
for(int i=data.length/2;i>2;i/=2){ c2Up<#t
for(int j=0;j insertSort(data,j,i); [J+]1hCZ|
} "Tc[1{eI
} M =6
insertSort(data,0,1); &d i=alvv1
} g0Jy:`M
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/** oxJ#NGD
* @param data U_1N*XK6$
* @param j 02mu%|"
* @param i MB3
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*/ C.Re*;EI,
private void insertSort(int[] data, int start, int inc) { a 8.Xy])!
int temp; D}L4uz?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \!!1o+#1j
} 0=c:O
} 2hFj+Ay
} -r@/8"
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快速排序: &T[BS;
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package org.rut.util.algorithm.support; D[bPm:\0M
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import org.rut.util.algorithm.SortUtil; ?PDrj/: *
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/** "MU)8$d
* @author treeroot zR_yxs'
* @since 2006-2-2 O`FuXB(t
* @version 1.0 AW/)R"+
*/ ]]lM)
public class QuickSort implements SortUtil.Sort{ SCKpW#2dP{
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/* (non-Javadoc) NK|m7(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HQtUNtZ
*/ o!}/&
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public void sort(int[] data) { r!HB""w
quickSort(data,0,data.length-1); w"?E=RS
} jS'hs>Ot
private void quickSort(int[] data,int i,int j){ @d_;p<\l
int pivotIndex=(i+j)/2; V9<CeTl'
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SortUtil.swap(data,pivotIndex,j); 2W q/_:
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int k=partition(data,i-1,j,data[j]); k
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SortUtil.swap(data,k,j); :j(D&?ao
if((k-i)>1) quickSort(data,i,k-1); eKek~U&
if((j-k)>1) quickSort(data,k+1,j); "i/3m'<2
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} d&5GkD.P
/** O!.mc=Gx7
* @param data 3:G94cp5
* @param i kU$M 8J.
* @param j )0xEI
* @return aIABx!83>
*/ E?3$ *t
private int partition(int[] data, int l, int r,int pivot) { TM1J1GU
do{ P'q ._U
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `8N],X
SortUtil.swap(data,l,r); <|_b:
} nO7#m~
while(l SortUtil.swap(data,l,r); wO3K2I]>0
return l; t4CI +fqy
} &4-rDR,
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} 6N]V.;0_5
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改进后的快速排序: x:WxEw>R
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package org.rut.util.algorithm.support; 1q(o3%
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import org.rut.util.algorithm.SortUtil; 0&|,HK
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/**
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* @author treeroot 0A>Fl*
* @since 2006-2-2 ~\D
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* @version 1.0 g w`}eA$
*/ -(YdK8
public class ImprovedQuickSort implements SortUtil.Sort { aok,qn'j
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private static int MAX_STACK_SIZE=4096; 13:0%IO
private static int THRESHOLD=10; 1F_ 1bAh$
/* (non-Javadoc) Z`lCS
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s(Tgv
*/ 4yu ^cix(
public void sort(int[] data) { Q8r 7
int[] stack=new int[MAX_STACK_SIZE]; 0kB!EJ<OdG
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int top=-1; "3Z<V8xB
int pivot; Q&Ox\*sMK
int pivotIndex,l,r; UCP4w@C
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stack[++top]=0;
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stack[++top]=data.length-1; $k&}{c8P
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while(top>0){ VT&R1)c
int j=stack[top--]; hf1f
int i=stack[top--]; LYY|8)Nj2"
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pivotIndex=(i+j)/2; C4ut!I #
pivot=data[pivotIndex]; -j 6U{l
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SortUtil.swap(data,pivotIndex,j); }uE8o"q
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