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。 Qg?^%O'
插入排序: DJrE[wI
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package org.rut.util.algorithm.support; PBr-<J
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import org.rut.util.algorithm.SortUtil; PP&AF?C
/** GFx>xQk
* @author treeroot &^1DNpUZ
* @since 2006-2-2 ~LHG
* @version 1.0 IZ3w.:A
*/ ^MUtmzh
public class InsertSort implements SortUtil.Sort{ ]BCH9%zLj
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/* (non-Javadoc) Hbx=vLQ6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b}o^ ?NtA
*/ 6+FmYp
public void sort(int[] data) { 1d|+7
int temp; 1I KDp]SN
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iO3@2J
} Tm[IOuhM'?
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冒泡排序: +=Crfvt
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package org.rut.util.algorithm.support; Q9X_aB0
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import org.rut.util.algorithm.SortUtil; sBq @W4
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/** s{KwO+ UW
* @author treeroot
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* @since 2006-2-2 #
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* @version 1.0 [Pby
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*/ pb}QP
public class BubbleSort implements SortUtil.Sort{ \8=>l?P
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/* (non-Javadoc) n'1pNL:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xgL*O>l)
*/ @1gX>!
public void sort(int[] data) { D^I%tn=F
int temp; Cz
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for(int i=0;i for(int j=data.length-1;j>i;j--){ sk$MJSE
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if(data[j] SortUtil.swap(data,j,j-1); }Hrm/Ni
} WWc{]R^D
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} F%lP<4Vx
} ]gHw;ry
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} Qg C
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选择排序: 5)2lZ(5.A#
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package org.rut.util.algorithm.support; +I5@Gys
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import org.rut.util.algorithm.SortUtil; }9aYU;9D
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/** 5"c#OU
* @author treeroot ( m\PcF
* @since 2006-2-2 BE:HO^-.1
* @version 1.0 7\rz*
*/ N{tNe-5
public class SelectionSort implements SortUtil.Sort { pz6fL=Xd
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/* D^]7/w:$-
* (non-Javadoc) {2}O\A
* `Ou\:Iz0u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M8ZpNa
*/ 4H]Go~<
public void sort(int[] data) { Im+<oZ
int temp; 8{ 8J(~
for (int i = 0; i < data.length; i++) { ,mhO\P96ik
int lowIndex = i; ~M3`mO+^U
for (int j = data.length - 1; j > i; j--) { p./zW
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if (data[j] < data[lowIndex]) { x/#*M
lowIndex = j; EQ-r
} *@S:f"i
} |#L U"D
SortUtil.swap(data,i,lowIndex); GP<A v1
} `-"2(Gp
} "Up3W%]SB
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} 6UG7lH!M
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Shell排序: '0[D-jEr
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package org.rut.util.algorithm.support; !=3[Bm G
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import org.rut.util.algorithm.SortUtil; 2)Grl;T]s
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/** TIbiw
* @author treeroot D/'kYoAEO
* @since 2006-2-2 #;)Oi9{9;
* @version 1.0 (y[+s?;WyB
*/ xqs{d&W
public class ShellSort implements SortUtil.Sort{
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/* (non-Javadoc) %YlL-*7L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fr#Y<=Jo
*/ "G].hKgbk*
public void sort(int[] data) { <kN4@bd;
for(int i=data.length/2;i>2;i/=2){ / Of*II&
for(int j=0;j insertSort(data,j,i); [`BMi-WQ
} +)h *)
} s3>,%8O6
insertSort(data,0,1); ]+<[D2f
} 7IB<0
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/** D>|m8-@]
* @param data /bv1R5
* @param j Q0K2md_%x
* @param i 7xTgG!>v
*/ \
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private void insertSort(int[] data, int start, int inc) { brx
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int temp; zc01\M
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Uoe;4ni
} ?&
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} "SJp9s3
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快速排序: FNL[6.!PV
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package org.rut.util.algorithm.support; {}kE=L5
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import org.rut.util.algorithm.SortUtil; 2#1"(m{
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/** 2$?bLvk
* @author treeroot gBp,p\ Xc
* @since 2006-2-2 D[32t0
* @version 1.0 K4~z@.
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*/ .<%2ON_
public class QuickSort implements SortUtil.Sort{ ^aYlu0Wm
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/* (non-Javadoc) G_vWwH4XtL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"6
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*/ _;L%? -2c
public void sort(int[] data) { }Q&zYC]d
quickSort(data,0,data.length-1); z*n
} Yef=HSzo
private void quickSort(int[] data,int i,int j){ %Xc50n2Z
int pivotIndex=(i+j)/2; sQUJ]h
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SortUtil.swap(data,pivotIndex,j); 7iMBDkb7
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int k=partition(data,i-1,j,data[j]); ntR@[)K
SortUtil.swap(data,k,j); _/(DEF+G
if((k-i)>1) quickSort(data,i,k-1); ,' VT75
if((j-k)>1) quickSort(data,k+1,j); g@0<`g
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} ko<u0SjF)u
/** B=14
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* @param data a,mG5bQ!
* @param i
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* @param j `W>cA64 o
* @return z ntvKOIh
*/ m}Xb #NAF8
private int partition(int[] data, int l, int r,int pivot) { Q^13KWvuV
do{ *Z}^T:3iw}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %87D(h!.I4
SortUtil.swap(data,l,r); RN:VsopL
} "/H B#
while(l SortUtil.swap(data,l,r); )gF>nNE
return l; h,-2+}
} ~5`p/.L)ZD
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} 2L!s'^m-
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改进后的快速排序: QFekj@
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package org.rut.util.algorithm.support; (<GBhNj=c
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import org.rut.util.algorithm.SortUtil; HGycF|]2
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/** p>M8:,
* @author treeroot m\*;Fx
* @since 2006-2-2 <MK4#I1I
* @version 1.0 +vf~s^
*/ ul(pp+%S
public class ImprovedQuickSort implements SortUtil.Sort { 7`xeuK
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private static int MAX_STACK_SIZE=4096; U$,-F**
private static int THRESHOLD=10; _*iy *:(o
/* (non-Javadoc) B:mtl?69g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BjX*Gm6l
*/ ,4W~CkLD
public void sort(int[] data) { pW4O[v`
int[] stack=new int[MAX_STACK_SIZE]; xWRkg$A
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int top=-1; 3R|UbG`
int pivot; n[[2<s*YJ
int pivotIndex,l,r; 0G;
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stack[++top]=0; \d-H+t]
stack[++top]=data.length-1; vw~=z6Ka
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while(top>0){ bi{G
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int j=stack[top--]; o|7ztpr
int i=stack[top--]; pu-X -j
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pivotIndex=(i+j)/2; cnw?3/J
pivot=data[pivotIndex]; H8!;
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SortUtil.swap(data,pivotIndex,j); E+Eug{+
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file://partition \wR;N/tg
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do{ "!S7D>2y#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %+pF4f8]
SortUtil.swap(data,l,r); )L+>^cJI<
} J;DTh ]z?:
while(l SortUtil.swap(data,l,r); ntr&