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。 ,v$2'm)V
插入排序: k;"R y8[k
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package org.rut.util.algorithm.support; >o0&:h|>$'
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import org.rut.util.algorithm.SortUtil; \]L::"![?
/** 35]j;8N:
* @author treeroot 2XETQ; 9
* @since 2006-2-2 Mhu53DT
* @version 1.0 P;HVL flu
*/ al3BWRq'f
public class InsertSort implements SortUtil.Sort{ +SZ%&
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/* (non-Javadoc) X\c1q4oB[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) []6ShcqJ[v
*/ SG(%d^x`R
public void sort(int[] data) { fY)4]= L
int temp; $DABR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q:EzKrE
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冒泡排序: `[C v-
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package org.rut.util.algorithm.support; A|`Joxr
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import org.rut.util.algorithm.SortUtil; +7lRP)1R
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/** pR@GvweA
* @author treeroot [i<$ZP
* @since 2006-2-2 #um1?V
* @version 1.0 3;t@KuQ66
*/ Q)%8NVs
public class BubbleSort implements SortUtil.Sort{ #LrCx"_&
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/* (non-Javadoc) n}ZBU5_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iaaH9X
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*/ UL@5*uiX
public void sort(int[] data) { L_.xr
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int temp; Vx\#+)4
for(int i=0;i for(int j=data.length-1;j>i;j--){ C,VqT6E<
if(data[j] SortUtil.swap(data,j,j-1); O_s9
} b Q9"GO<X
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} 1=/MT#d^?
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选择排序: @LkW_
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package org.rut.util.algorithm.support; ]Nd'%M
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import org.rut.util.algorithm.SortUtil; mAYr<=
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/** !5'
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* @author treeroot I")"s
* @since 2006-2-2 @$b+~X)7
* @version 1.0 um_M}t{
*/ !w;A=
public class SelectionSort implements SortUtil.Sort { v#<+n{B
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/* [V #&sAe
* (non-Javadoc) u{E^<fW]
* *"wD&E?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f-f\}G&G
*/ #(7RX}
public void sort(int[] data) { ]Xkc0E1
int temp; (Aov}I+
for (int i = 0; i < data.length; i++) { G7kFo6Cb
int lowIndex = i; d)17r\*>I
for (int j = data.length - 1; j > i; j--) { 1 [~|
if (data[j] < data[lowIndex]) { x1hs19s
lowIndex = j; QF.wtMGF&
} CgT QGJ}-
} )8N)Z~h
SortUtil.swap(data,i,lowIndex); 3/SqXu
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Shell排序: 9OJ\n|,(
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package org.rut.util.algorithm.support; s$nfY.C
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import org.rut.util.algorithm.SortUtil; L+0N@`nRF
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/** BS<>gA
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* @author treeroot pQgOT0f
* @since 2006-2-2 "6Hjji@A
* @version 1.0 m%$E[cUW!
*/ abk:_
public class ShellSort implements SortUtil.Sort{ [F>n!`8
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/* (non-Javadoc) .D2ub/er
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z5^,!6
*/ lj}1'K@M
public void sort(int[] data) { PRf\6
for(int i=data.length/2;i>2;i/=2){ $gD(MKR)~
for(int j=0;j insertSort(data,j,i); [#@p{[ ?r
} a~N)qYL:
} }"; hz*a
insertSort(data,0,1); #.G>SeTn2}
} {D2d({7
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/** CPCB!8-5
* @param data }-]s#^'w
* @param j TXk"[>,:H
* @param i UNH}*]u4`
*/ Y8CYkJTAD-
private void insertSort(int[] data, int start, int inc) { O6/=/-?N=c
int temp; +P6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m5Laq'~0_
} XuAc3~HAd
} Yr(f iI
} +iDz+3v(
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} [.#$hOsNR
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快速排序: b8-^wJH!
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package org.rut.util.algorithm.support; 6I.+c
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import org.rut.util.algorithm.SortUtil; >a]
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/** I:2jwAl
* @author treeroot Q ]koj!mMl
* @since 2006-2-2 U?m?8vhR6(
* @version 1.0 _@3O`
*/ 5<ya;iK
public class QuickSort implements SortUtil.Sort{ 9mtC"M<
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/* (non-Javadoc) u^eC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"e(
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*/ vH:+
public void sort(int[] data) { <qj@waKw4
quickSort(data,0,data.length-1); M(f*hOG{Y
} Vh-h{
private void quickSort(int[] data,int i,int j){ rO>wX_
int pivotIndex=(i+j)/2; (YH{%8
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SortUtil.swap(data,pivotIndex,j); V\lF:3C
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int k=partition(data,i-1,j,data[j]); Gqu0M`+7
SortUtil.swap(data,k,j); #+Gs{i Xr
if((k-i)>1) quickSort(data,i,k-1); t$ ~:C
if((j-k)>1) quickSort(data,k+1,j); ;."{0gq
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} kR|DzB7
/** '`VO@a
* @param data ;iI2K/ 3
* @param i /|^^v DL
* @param j Jx[e{o)o
* @return )uJ`E8>-
*/ WQ`P^5e
private int partition(int[] data, int l, int r,int pivot) { Z"&ODVP
do{ 4>eg@s N
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pv.),Iv-68
SortUtil.swap(data,l,r); X~VZ61vNu
} >R !I
while(l SortUtil.swap(data,l,r); :<G+)hIK
return l; TgG)btQ
} ^O9m11
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} -PuVI5L<
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改进后的快速排序:
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package org.rut.util.algorithm.support; ?O]gFn
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import org.rut.util.algorithm.SortUtil; ~$9"|
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/** T[K?A+l
* @author treeroot Z.f<6<gF
* @since 2006-2-2 JugQ +0
* @version 1.0 ({62GWnn_
*/ l@9:VhU(
public class ImprovedQuickSort implements SortUtil.Sort { s0'U[]
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private static int MAX_STACK_SIZE=4096; nr6[rq
private static int THRESHOLD=10; C
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/* (non-Javadoc) bJ[1'Es`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #!<s& f|O
*/ TV2:5@33
public void sort(int[] data) { a.ME{:a%
int[] stack=new int[MAX_STACK_SIZE]; 667tL(
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int top=-1; hRiGW_t
int pivot; qt)mUq;>
int pivotIndex,l,r; sMo%Ayes
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stack[++top]=0; ?|F;x"
stack[++top]=data.length-1; 3Q6#m3AWY
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while(top>0){
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int j=stack[top--]; SQRz8,sqkw
int i=stack[top--]; +4Ra N`I
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pivotIndex=(i+j)/2; v:ZD}Q_
pivot=data[pivotIndex]; Lg53
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SortUtil.swap(data,pivotIndex,j); x@x@0k`A2
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r=j; T{Q&