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。 =*K~U# uoC
插入排序: 9ure:Dko(Y
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package org.rut.util.algorithm.support; []opPQ
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import org.rut.util.algorithm.SortUtil; i-6,r [<
/** P<&-8QA
* @author treeroot i7@qfe$fR
* @since 2006-2-2 ]xJ5}/
* @version 1.0 hEG-,
*/ ?9jl8r>
public class InsertSort implements SortUtil.Sort{ 8^/V2;~^,>
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/* (non-Javadoc) >GR L5Iow
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0|**Km\+
*/ '3B\I#
public void sort(int[] data) { v.eN Wp
int temp; G-5wv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kVu8/*Q
} bwHl}3
} w.tQ)x1h
} Q<TD5t9
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} hN(sz
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冒泡排序: p1zT]
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package org.rut.util.algorithm.support; Jptzc:~B
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import org.rut.util.algorithm.SortUtil; (wxdT6RVm\
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/** g~zz[F 8U
* @author treeroot z&a%_
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* @since 2006-2-2 {Pi+VuLE
* @version 1.0 }B-@lbK6)
*/ &c;@u?:@S
public class BubbleSort implements SortUtil.Sort{ 3$cIm+
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/* (non-Javadoc) uU_0t;oR3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m(~5X0
*/ \W"N{N
public void sort(int[] data) { ;QMRm<CLV
int temp; Gp}:U>V)
for(int i=0;i for(int j=data.length-1;j>i;j--){ #;4afj:2g
if(data[j] SortUtil.swap(data,j,j-1); 8|:bis~wm
} )(&Z&2~A
} /qf2LO'+
} f>g<:.k*
} f-Yp`lnn.d
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} XaFu(Xu7
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选择排序: )s @}|`
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package org.rut.util.algorithm.support; -!X,MDO
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import org.rut.util.algorithm.SortUtil; z|';Y!kQ
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/** ~d+.w%Z`
* @author treeroot <
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* @since 2006-2-2 43i@5F]
* @version 1.0 AsBep
*/ 942(a
public class SelectionSort implements SortUtil.Sort { Ww8C}2g3
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/* "rV-D1Dki
* (non-Javadoc) fn6;
* 7/p&]0w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T]&%
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*/ ~;m3i3D
public void sort(int[] data) { fc}G6P;3{
int temp; HM'P<<
for (int i = 0; i < data.length; i++) { 3['aK|qk.
int lowIndex = i; };rxpw>ms
for (int j = data.length - 1; j > i; j--) { +/">]QJ
if (data[j] < data[lowIndex]) { }Mh@%2$
lowIndex = j; O<A$,<6 7
} Qktj
} Dgb@`oo
SortUtil.swap(data,i,lowIndex); *2K/)(
} a4zq`n|3U
} ba=-F4?
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} 0?]Y^:
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Shell排序: J>H$4t#HX
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package org.rut.util.algorithm.support; k!{0ku}]
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import org.rut.util.algorithm.SortUtil; ^/K]id7 2
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/** 3^ct;gz
* @author treeroot %kod31X3<
* @since 2006-2-2 B%~hVpm,eM
* @version 1.0 5xHP5+&
*/ 4G:?U6
public class ShellSort implements SortUtil.Sort{ J%_m`?
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/* (non-Javadoc) ; O6Ez-"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pZpAb+
*/ Ec44JD
public void sort(int[] data) { (\CT
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for(int i=data.length/2;i>2;i/=2){ f)~j'e
for(int j=0;j insertSort(data,j,i); +[ +4h}?
} QD<GXPu?N
} `k ^d)9
insertSort(data,0,1); YQ\c0XG
} DEdJH4
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/** )<fa1Gz#^
* @param data (qf%,F,_L
* @param j |.OXe!uU41
* @param i [Pn(d[$z
*/ -i,=sZXB
private void insertSort(int[] data, int start, int inc) { C}i1)
int temp; W @X/Z8.(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v;S_7#
} 9n(.v}
} k<bA\5K
} aP#nK
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快速排序: +3;`4bW
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package org.rut.util.algorithm.support; gpIq4Q<
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import org.rut.util.algorithm.SortUtil; hkifd4#
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/** 4,nUCT
* @author treeroot *wSz2o),
* @since 2006-2-2 (%bqeI!ob
* @version 1.0 )D_\~n/5
*/ vlygS(Y_7
public class QuickSort implements SortUtil.Sort{ X9|={ng)g#
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/* (non-Javadoc) _LVi}mM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rc_K|Df
*/ bgi
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public void sort(int[] data) { X&s@S5=r]
quickSort(data,0,data.length-1); dX720/R
} SxAZ2|/-
private void quickSort(int[] data,int i,int j){ jrF#DDH?I
int pivotIndex=(i+j)/2; kYwV0xQ
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SortUtil.swap(data,pivotIndex,j); (
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int k=partition(data,i-1,j,data[j]); LqDj4[}
SortUtil.swap(data,k,j); 2YS1%<-g*
if((k-i)>1) quickSort(data,i,k-1); T>$S&U
if((j-k)>1) quickSort(data,k+1,j); ^ UB*Q
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} (IE\}QcK
/** I%8>nMTJ
* @param data ><l|&&e-
* @param i ;J]Lzh
* @param j sQIzcnKB
* @return Vr|sRvz
*/ li4"|T&
private int partition(int[] data, int l, int r,int pivot) { 1@$n)r`
do{ +dw=)A#/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2^V/>|W>w
SortUtil.swap(data,l,r); _J N$zZ{
} B&bQvdp
while(l SortUtil.swap(data,l,r); h;+bHrKji
return l; |qp^4vq.p
} v`G [6Z
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} wjRv=[
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改进后的快速排序: y)Y0SY1\j
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package org.rut.util.algorithm.support; =
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import org.rut.util.algorithm.SortUtil; Ub"6OT1tl
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/** ZLN79r{T
* @author treeroot gq:2`W&5
* @since 2006-2-2 kuQ+MQHs
* @version 1.0 Omkpjr(1
*/ aRc2#:~;
public class ImprovedQuickSort implements SortUtil.Sort { Xy[*)<
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private static int MAX_STACK_SIZE=4096; :S_3(/} \
private static int THRESHOLD=10; JX $vz*KF
/* (non-Javadoc) Qf$3!O}G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pS) &d4i
*/ 5N5Deb#V
public void sort(int[] data) { #rps2nf.j
int[] stack=new int[MAX_STACK_SIZE]; %F.^cd"
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int top=-1; @pn<x"F5'
int pivot; !!\OB6
int pivotIndex,l,r; ~HM,@5dFC
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stack[++top]=0; Z~s"=kF,
stack[++top]=data.length-1; W "}Cfv
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while(top>0){ H[;\[3
int j=stack[top--]; sX,."@[
int i=stack[top--]; DV6B_A{kI
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