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。 W'>"E/Tx#O
插入排序: }#~DX!Sj
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package org.rut.util.algorithm.support; !`3q9RT3."
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import org.rut.util.algorithm.SortUtil; yXuF<+CJ
/** zNF.nS}:
* @author treeroot ;^Q- 1
* @since 2006-2-2 $50/wb6s
* @version 1.0 oj|\NlR
*/ .4jU G=
public class InsertSort implements SortUtil.Sort{ z
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/* (non-Javadoc) q;W(;B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w:|BQ,
*/ KA=cIm
public void sort(int[] data) { 1ZUmMa1(
int temp; Rl. YF+YH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p~n62(
} W?`%it5
} w^_[(9
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冒泡排序: !\)9fOLs
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package org.rut.util.algorithm.support; ?89K
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import org.rut.util.algorithm.SortUtil; F%Xj'=
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/** 4RLuv?,)~
* @author treeroot $.7Ov|
* @since 2006-2-2 1>KZ1Kf
* @version 1.0 ODggGB` H`
*/ 0u3"$o'R
public class BubbleSort implements SortUtil.Sort{ 0q@U>#
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/* (non-Javadoc) c"|4'#S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<Z~Gw4
*/ }JF,:g
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public void sort(int[] data) { >~nc7j
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int temp; d0b`qk @4
for(int i=0;i for(int j=data.length-1;j>i;j--){ L.cGt"{
if(data[j] SortUtil.swap(data,j,j-1); ~{8X$xs
} ,%bG]5
} uxxS."~
} e\9H'$1\
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选择排序: */T.]^
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package org.rut.util.algorithm.support; /^m3?q[a
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import org.rut.util.algorithm.SortUtil; yV'<l
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/** i*T>,z
* @author treeroot `8.Oc;*zu
* @since 2006-2-2 QJsud{ada
* @version 1.0 |uT&M`7\{
*/ +2ZBj6 e9
public class SelectionSort implements SortUtil.Sort { Zx1 I&K\Cd
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/* q=_&izmE'7
* (non-Javadoc) B. J_(V+
* ,h#U<CnP#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7%%FYHMO:
*/ "K!9^!4&
public void sort(int[] data) { p^E}%0#
int temp; T%opkyP>=
for (int i = 0; i < data.length; i++) { T|/B}srm
int lowIndex = i; O%$XgEJ8p
for (int j = data.length - 1; j > i; j--) { 0Rme}&$
if (data[j] < data[lowIndex]) { uoryxKRjc~
lowIndex = j; K|OowM4tv
} _olhCLIR-
} 7AOjlC9R}
SortUtil.swap(data,i,lowIndex); 2I!L+j_
}
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Shell排序: lrE|>R
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package org.rut.util.algorithm.support; ;&A%"8o
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import org.rut.util.algorithm.SortUtil; ~&UfnO
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/** +Vf39}8
* @author treeroot B?-~f^*,jG
* @since 2006-2-2
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* @version 1.0 0zL7$Q#c
*/ SU {U+
public class ShellSort implements SortUtil.Sort{ B(omD3jzN
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/* (non-Javadoc) uia[>&2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )(aj
*/ Zl:Z31
public void sort(int[] data) { K<3$>/|
for(int i=data.length/2;i>2;i/=2){ +RuPfw{z
for(int j=0;j insertSort(data,j,i); y5v}EX`m&
} a9w1Z4
} w<4,;FFlZ/
insertSort(data,0,1); Gx$rk<;ZW
} .t7mTpi
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/** '(qVA>S
* @param data ,o_Ur.UJ
* @param j Py3Y*YP
* @param i ,)CRozC\}K
*/ 4;_<CB
private void insertSort(int[] data, int start, int inc) { o|FY-+
int temp; h|DKD.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RyJN=;5p
} [xrM){ItW
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} 4raKhN"
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快速排序: S]P80|!|
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package org.rut.util.algorithm.support; =N+Ou5D
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import org.rut.util.algorithm.SortUtil; 5z$>M3
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/** rLy<3
* @author treeroot 7n_'2qY
* @since 2006-2-2 ZgXn8O[a
* @version 1.0 YTtuR`
*/ syseYt]
public class QuickSort implements SortUtil.Sort{ Yy_o*Ozq
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/* (non-Javadoc) 9 aE.jpN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\Zq/Z\
*/ |.s#m^"
public void sort(int[] data) { RCS91[
quickSort(data,0,data.length-1); f a9n6uT
} 'A|OVyH
private void quickSort(int[] data,int i,int j){ H,?)6pZ
int pivotIndex=(i+j)/2; 1VH$l(7IQ
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SortUtil.swap(data,pivotIndex,j); bhIyq4N
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int k=partition(data,i-1,j,data[j]); -quWnn/
SortUtil.swap(data,k,j); CQLh;W`Dc
if((k-i)>1) quickSort(data,i,k-1); XO=UKk+EK
if((j-k)>1) quickSort(data,k+1,j); R
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} @\!9dK-W
/** icX$<lD
* @param data 6L2Si4OGjG
* @param i vfh0aW-O
* @param j K]b_JDEk
* @return LEUD6 M+~t
*/ kRyt|ryWh
private int partition(int[] data, int l, int r,int pivot) { LB)sk$)
do{ ]/_GHG9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Hko(@z
SortUtil.swap(data,l,r); CkJU5D
} %o~w
while(l SortUtil.swap(data,l,r); 2WA =U]
return l; mNvK|bTUT
} WdA6Y
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} m-~eCFc
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改进后的快速排序: e|L$e0
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package org.rut.util.algorithm.support; t;Rdrk
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import org.rut.util.algorithm.SortUtil; 4-?'gN_
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/** xTnd9'Pk`:
* @author treeroot `f@VX
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* @since 2006-2-2 l*+"0
* @version 1.0 <Wn"_Ud=
*/ F^],p|4f
public class ImprovedQuickSort implements SortUtil.Sort { CKAs3",
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private static int MAX_STACK_SIZE=4096; S+i .@N.^
private static int THRESHOLD=10; pvz*(u
/* (non-Javadoc) yrDWIU(8;6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -V'`;zE6
*/ u%^Lu.l_c
public void sort(int[] data) { =,aWO7Pz
int[] stack=new int[MAX_STACK_SIZE]; O1o.^i$-M
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int top=-1; /12D >OK
int pivot; }T?MWcG4
int pivotIndex,l,r; b&$ ?.z
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stack[++top]=0; N.J;/!%!
stack[++top]=data.length-1; G -U%
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while(top>0){ !;SpQ28
int j=stack[top--]; E)Z$7;N0x
int i=stack[top--]; {__Z\D2I
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pivotIndex=(i+j)/2; D_6GzgZ
pivot=data[pivotIndex]; hT&,5zaWdv
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SortUtil.swap(data,pivotIndex,j); Sx,O)
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file://partition `_]Z#X&&h
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r=j; U.oxLbJ`
do{ >G2o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); ]JX0:'x^
} a;Ic!:L
while(l SortUtil.swap(data,l,r); BoB2q(
SortUtil.swap(data,l,j); "C$z)
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if((l-i)>THRESHOLD){ O)MKEMuA
stack[++top]=i; iTU8WWY<
stack[++top]=l-1; Q? a&