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。 x{*!"a>
插入排序: .^.UJo;4G
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package org.rut.util.algorithm.support; 7<^D7
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import org.rut.util.algorithm.SortUtil; TzL40="F
/** t1Khf
* @author treeroot #-HN[U?Gs
* @since 2006-2-2 rrwsj`
* @version 1.0 }\DQxHG
*/ ZJ[ Uz_%W
public class InsertSort implements SortUtil.Sort{ UXk8nH
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/* (non-Javadoc) 56_KB.Ww~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NxX1_d
*/ o"1us75P
public void sort(int[] data) { }C&c=3V
int temp; ]VYl Eqe
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c\b>4 &n
} }\*Sf[EMD
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冒泡排序: 4 z`5W,
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package org.rut.util.algorithm.support; t2SZ]|C
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import org.rut.util.algorithm.SortUtil; /&dt!.WY^
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/** 2Ls<OO
* @author treeroot 5~X%*_[],
* @since 2006-2-2 M#>GU<4"
* @version 1.0 XN0Y#l
*/ `3:%F>
public class BubbleSort implements SortUtil.Sort{ _#F'rl6'
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/* (non-Javadoc) -&A[{m <,>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DRIv<=Bt
*/ )-{Qa\6(%
public void sort(int[] data) { uSQ*/h-<)0
int temp; 6J*`<k/S
for(int i=0;i for(int j=data.length-1;j>i;j--){ >g2B5KY
if(data[j] SortUtil.swap(data,j,j-1); $S}x'F!4_
} !tdfTf$
} #50)D wD
} XL3h ;$,
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选择排序: <.B s`P
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package org.rut.util.algorithm.support; |7$h@KF=S
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import org.rut.util.algorithm.SortUtil; ,Tl5@RN
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/** ? ^CGJ1
* @author treeroot eLny-.i,7
* @since 2006-2-2 0?xiG SZV
* @version 1.0 '[8b0\
*/ h$k3MhYDes
public class SelectionSort implements SortUtil.Sort { !f-o,RJ
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/* cvA\C_
* (non-Javadoc) e}[we:
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B7MW" y
*/ -<!17jy
public void sort(int[] data) { <WJ0St
int temp; Y0\\(0j64
for (int i = 0; i < data.length; i++) { A'1AU:d
int lowIndex = i; Te}yQ= +
for (int j = data.length - 1; j > i; j--) { !(K{*7|h
if (data[j] < data[lowIndex]) { FT>~ES]cQd
lowIndex = j; q{/Jw"e
} Gc!8v}[7J
} j(C
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SortUtil.swap(data,i,lowIndex); S<pkc8
} 61>f(?s
} 'kEG.Oq7
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} .<.#aY;N
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Shell排序: Fv@tD4I>
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package org.rut.util.algorithm.support; 3.FR C
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import org.rut.util.algorithm.SortUtil; Km"&mT $
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/** `)2[ST
* @author treeroot $P;UoqG<&
* @since 2006-2-2 8t=3
* @version 1.0 bBG/gQ
*/ fp tIc#4
public class ShellSort implements SortUtil.Sort{ 5W{hH\E _5
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/* (non-Javadoc) )ji@k(x27q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BjvdnbJg
*/ T5q-"W6\
public void sort(int[] data) { Q0WY$w1<
for(int i=data.length/2;i>2;i/=2){ |(&oI(l5K
for(int j=0;j insertSort(data,j,i); 7*MU2gb
} B\/7^{i5
} 1OP"5f
insertSort(data,0,1); yf?W^{^|
} k% NrL@z
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/** %p*`h43;
* @param data 5;(0 $4I
* @param j #fN/LO
* @param i |@ *3^'
*/ 4]EvT=Ro
private void insertSort(int[] data, int start, int inc) { "f<#.}8
int temp; 0Nt%YP
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :Fnzi0b
} [aHlu[,
} _0m}z%rI
} CC>($k"
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} yi|:}K$
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快速排序: /cYk+c
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package org.rut.util.algorithm.support; r_q~'r35 _
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import org.rut.util.algorithm.SortUtil; umryA{Ps
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/** GBW 7Y
* @author treeroot X~%IM1+L;
* @since 2006-2-2 ?`"<DH~:0B
* @version 1.0 QU,?}w'?d
*/ q 7`
public class QuickSort implements SortUtil.Sort{ )Yrr%f`\
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/* (non-Javadoc) g&P9UW>qS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sI$:V7/!
*/ ;2BPPZ
public void sort(int[] data) { Gy$o7|PA"{
quickSort(data,0,data.length-1); so'eZ"A:
} #|q;t
private void quickSort(int[] data,int i,int j){ NXi,5
int pivotIndex=(i+j)/2; $sM]BE:
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SortUtil.swap(data,pivotIndex,j); IG>>j}
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int k=partition(data,i-1,j,data[j]); 27$\sG|g
SortUtil.swap(data,k,j); ~;` fC|)
if((k-i)>1) quickSort(data,i,k-1); pc^E'h:
if((j-k)>1) quickSort(data,k+1,j); =g1 D;
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} .ZM]%[4
/** Gtf1}UJC
* @param data cz$c)It
* @param i @i;L Za
* @param j dr}O+7_7%-
* @return H#_}^cGPR=
*/ oK%K+h
private int partition(int[] data, int l, int r,int pivot) { P~;<o!f
do{ @
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9.^-us1
SortUtil.swap(data,l,r); Id; mn}+~
}
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while(l SortUtil.swap(data,l,r); <ihhV e
return l; !Mm+bWn=mB
} 34HFrMi
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} uHTKo(NG
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改进后的快速排序: hn*}5!^
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package org.rut.util.algorithm.support; iLc)"L-i
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import org.rut.util.algorithm.SortUtil; 9_I[o.q
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/** 2&3eAJC
* @author treeroot })h'""i&xn
* @since 2006-2-2 ;2+FgOj
* @version 1.0 1==P.d(
*/ $yP'k&b!
public class ImprovedQuickSort implements SortUtil.Sort { >^2ZM
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private static int MAX_STACK_SIZE=4096; 1)nM#@%](h
private static int THRESHOLD=10; $fq-wl-=
/* (non-Javadoc) h Kp,4D>2_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {m1t~ S
*/ 9u-M! $
public void sort(int[] data) { TPN:cA6[c
int[] stack=new int[MAX_STACK_SIZE]; )of5229
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int top=-1; OgzGkc@A
int pivot; a,F8+
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int pivotIndex,l,r; sYW1T @
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stack[++top]=0; =N[V{2}q
stack[++top]=data.length-1; ;@=@N9qK
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while(top>0){ .~V".tZV[
int j=stack[top--];
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int i=stack[top--]; Huug_E+
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pivotIndex=(i+j)/2; 8_sU8q*s
pivot=data[pivotIndex]; <Bob#Tf
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SortUtil.swap(data,pivotIndex,j); VygXhh^7\
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file://partition q^T&A[hMPx
l=i-1; V}Y~z)i0
r=j; _Oaso >
do{ R+@sHsZ@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4IGQ,RTB
SortUtil.swap(data,l,r); T{ v<