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。 ~SP.&>Q>
插入排序: +JBhw4et;.
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package org.rut.util.algorithm.support; 0>VgO{X
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import org.rut.util.algorithm.SortUtil; xWn.vSos
/** D-A#{e _
* @author treeroot [,|KVc=&H
* @since 2006-2-2 Rm)vY}v
* @version 1.0 :#I8Cf
*/ cd*y{Wt
public class InsertSort implements SortUtil.Sort{ $*8c0.{U
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/* (non-Javadoc) 09%q/-$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dg/7?gV
*/ (!DH'2I[
public void sort(int[] data) { -:cS}I
int temp; fC]+C(*d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @MAk/mb&
} (Qq! u
} oQWS$\Rr.
}
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冒泡排序: :14O=C
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package org.rut.util.algorithm.support; m!N_TOl-^
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import org.rut.util.algorithm.SortUtil; 9"_qa q
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/** 1\kOjF)l
* @author treeroot J
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* @since 2006-2-2 dq"b_pr;
* @version 1.0 X
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*/ RZm5[n
public class BubbleSort implements SortUtil.Sort{ 0MrtJNF]_O
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/* (non-Javadoc) .'5yFBS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2~ Gcoda
*/ 8X5;)h
public void sort(int[] data) { dGP*bMCT
int temp; =u${2=
for(int i=0;i for(int j=data.length-1;j>i;j--){ JS}W4 N
if(data[j] SortUtil.swap(data,j,j-1); |@Q(~[It
} Qj[4gN?}=
} IP&En8W+
} g%1!YvS3v
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选择排序: [UR+G8X21m
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package org.rut.util.algorithm.support; CH`4FR.-
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import org.rut.util.algorithm.SortUtil; ElqHZ$a?
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/** [M@i,d-;A
* @author treeroot >`'#4!}G5j
* @since 2006-2-2 ZV_mP'1*
* @version 1.0 pc:K5 -Os
*/ 0wAZ9AxA{
public class SelectionSort implements SortUtil.Sort { ruB&&C6)v
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/* mZ ONxR6q$
* (non-Javadoc) (U/ 6~r'.L
* ;9=9D{-4+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )&se/x+
*/ c^A3|tCi
public void sort(int[] data) { uC 5mxZ
int temp; s-k~_C>Fw
for (int i = 0; i < data.length; i++) { +g7Iu! cA
int lowIndex = i; Q%o
for (int j = data.length - 1; j > i; j--) { o@EV>4e y
if (data[j] < data[lowIndex]) { @UkcvhH
lowIndex = j; e0(loWq]
} PPPRO.y
} (<itE3P
SortUtil.swap(data,i,lowIndex); ]/JE#
} A9p$5jt7
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Shell排序: *)L%pH>`
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package org.rut.util.algorithm.support; &AUL]:<s
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import org.rut.util.algorithm.SortUtil; fnL!@WF
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/** V6BCW;
* @author treeroot #++MoW}'g
* @since 2006-2-2 @D[;$YEk
* @version 1.0 YAC=V?U-#
*/ _GI [SzD
public class ShellSort implements SortUtil.Sort{ VqVP5nT'=
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/* (non-Javadoc) HEht^/pJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fm*n>^P@Y
*/ 7:mM`0g!
public void sort(int[] data) { ib/&8)Y+J
for(int i=data.length/2;i>2;i/=2){ Gv?3}8Wp
for(int j=0;j insertSort(data,j,i); d3 fE[/oU
} wvx
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} &>i+2c~
insertSort(data,0,1); {LR?#.
} L
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/** ]*sXISg1
* @param data sJt&`k Z
* @param j |Wi$@sWO
* @param i S%mN6b~{
*/ +]`MdOu
private void insertSort(int[] data, int start, int inc) { ?
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int temp; 7EQ
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (+CB)nV0IA
} D
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} 7KuTC%7
} @6h=O`X>
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} A}H)ojG'v
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快速排序: vRRi"bo
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package org.rut.util.algorithm.support; x8b w#
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import org.rut.util.algorithm.SortUtil; KB*[b
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/** 1wE~dpnx
* @author treeroot @~QW~{y
* @since 2006-2-2 uH65DI<
* @version 1.0 gPQ2i])"Q
*/ rguC#Xt!4
public class QuickSort implements SortUtil.Sort{ #x':qBv#
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/* (non-Javadoc) WH/r$.&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]/bf#&@g`k
*/ 5c3)p^]g
public void sort(int[] data) { C1r]kF
quickSort(data,0,data.length-1); v(h
} E"pq ZP =
private void quickSort(int[] data,int i,int j){ \qNj?;B
int pivotIndex=(i+j)/2; ,F6i5128{
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SortUtil.swap(data,pivotIndex,j); 2+sNt6B2
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int k=partition(data,i-1,j,data[j]); &"K74
SortUtil.swap(data,k,j); Z3~$"V*ZB{
if((k-i)>1) quickSort(data,i,k-1); -'5:Cq
if((j-k)>1) quickSort(data,k+1,j); f{^C+t{r
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} #^yw!~:{
/** 0&2TeqsLh)
* @param data MFiX8zwhx+
* @param i |v[{k>7f
* @param j q`"gT;3S
* @return qD7#q]
*/ `[VoW2CLH+
private int partition(int[] data, int l, int r,int pivot) { 3xp%o5K
do{ h1FM)n[E7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~O
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SortUtil.swap(data,l,r); 6$9n_AS
} oizD:|
while(l SortUtil.swap(data,l,r); )/Ee#)z*
return l; iW.8+?Xq&
} e@NS=U` <
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} Q$iv27
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改进后的快速排序: E`u=$~K
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package org.rut.util.algorithm.support; J+Q
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import org.rut.util.algorithm.SortUtil; |9~{&<^X
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/**
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* @author treeroot daGGgSbh
* @since 2006-2-2 `GqS.O}C
* @version 1.0 Nt$/JBB[$
*/ $X9-0-
public class ImprovedQuickSort implements SortUtil.Sort { 4g$mz:vo
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private static int MAX_STACK_SIZE=4096; R1 hb-
private static int THRESHOLD=10; ZV,n-M =
/* (non-Javadoc) 7K
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t
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*/ %kKe"$)0
public void sort(int[] data) { &owBmpz
int[] stack=new int[MAX_STACK_SIZE]; _udH(NC
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int top=-1; m%qah>11
int pivot; ^z"90-V^
int pivotIndex,l,r; ,l.O @
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stack[++top]=0; 6AUXYbK,
stack[++top]=data.length-1; XB50>??NE
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while(top>0){ o'D{ql
int j=stack[top--]; ,*bI0mFZ
int i=stack[top--]; q/XZb@rt
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pivotIndex=(i+j)/2; [JO'ta
pivot=data[pivotIndex]; {h7*a=
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SortUtil.swap(data,pivotIndex,j); x5c
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file://partition [`6|~E"F
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do{ z<m,Xj4w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f:KKOLm
SortUtil.swap(data,l,r); =xS(Er`r
} \T/~"
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while(l SortUtil.swap(data,l,r); 9V0iV5?( P
SortUtil.swap(data,l,j); >C*q
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if((l-i)>THRESHOLD){ Y6?d
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stack[++top]=i; <fJoHS
stack[++top]=l-1; 6HCP1`gg
} q\x*@KQgM
if((j-l)>THRESHOLD){ "qu%$L
stack[++top]=l+1; 15)=>=1mR.
stack[++top]=j; c_yf=
} :05>~bn>pC
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} pV=X
file://new InsertSort().sort(data); :eo2t>zF-<
insertSort(data); Om\?<aul
} 0N;Pb(%7UU
/** ujXC#r&
* @param data WW:@% cQ@
*/ #]_S{sO
private void insertSort(int[] data) {
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int temp; /E2/3z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7;dV]N
} {[m %1O1
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} JY"<b6C^
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} ^}ngbDn
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归并排序: I%h9V([
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package org.rut.util.algorithm.support; G)?VC^Q
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import org.rut.util.algorithm.SortUtil; isLIfE>
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/** 2ZNTj u7h
* @author treeroot <*i
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* @since 2006-2-2 1ZJP.T`
* @version 1.0 ^.&