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。 uBt
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插入排序: 7,p.M)t)
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package org.rut.util.algorithm.support; Ly8=SIZ
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import org.rut.util.algorithm.SortUtil; [>a3` 0M
/** 1]=X
* @author treeroot %\48hSe
* @since 2006-2-2 J~WT;s
* @version 1.0 $zCCeRP
*/ B3&C&o.h
public class InsertSort implements SortUtil.Sort{ ef '?O
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/* (non-Javadoc) "A+7G5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |}:}14ty
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public void sort(int[] data) { &Hp*A^M
int temp; &t<gK
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oX:&;KA
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冒泡排序: m85ZcyW1T
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package org.rut.util.algorithm.support; Q >[>{N&\
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import org.rut.util.algorithm.SortUtil; h.#:7d(g
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/** td%J.&K_*'
* @author treeroot D1-/#QN$1
* @since 2006-2-2 hR|xUp
* @version 1.0 d'MZ%.#
*/ q7KHx b
public class BubbleSort implements SortUtil.Sort{ Pah@d!%A
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/* (non-Javadoc) J61%a,es
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 98u@X:3
*/ a+lNXlh=
public void sort(int[] data) {
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int temp; Rl cL(HM
for(int i=0;i for(int j=data.length-1;j>i;j--){ _ s}aF
if(data[j] SortUtil.swap(data,j,j-1); rucw{)
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选择排序: ^wZx=kas
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package org.rut.util.algorithm.support; e)?}2
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import org.rut.util.algorithm.SortUtil; @Hp%4$=
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/** Y J,"@n_
* @author treeroot hfIP
* @since 2006-2-2 *FEJ5x
* @version 1.0 /"`hz6rIv
*/ >ryA:TO{
public class SelectionSort implements SortUtil.Sort { "__)RHH:8
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/* %-fXa2
* (non-Javadoc) egA*x*8
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]XlBV-@b
*/ T$0)un
public void sort(int[] data) { -`Z!p
int temp; fCNQUK{Gs5
for (int i = 0; i < data.length; i++) { :F6dXW
int lowIndex = i; +UOVD:G
for (int j = data.length - 1; j > i; j--) { Bt")RG
if (data[j] < data[lowIndex]) { c oZK
lowIndex = j; S)ipkuj X
} Zbre5&aU
} cX1?4e8
SortUtil.swap(data,i,lowIndex); #E
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Shell排序: sbVEA
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package org.rut.util.algorithm.support; CIo`;jt K
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import org.rut.util.algorithm.SortUtil; H~#$AD+H
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/** sF :pwI5^
* @author treeroot F> Ika=z,
* @since 2006-2-2 k9H}nP$F
* @version 1.0 X)j%v\#`U
*/ on8$Kc
public class ShellSort implements SortUtil.Sort{ QhTn9S:D
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/* (non-Javadoc) @mu{*. &
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cr0/.Zv)
*/ '6\w4J(
public void sort(int[] data) { \>"Zn7
for(int i=data.length/2;i>2;i/=2){ d^~yUk
for(int j=0;j insertSort(data,j,i); $_'<kH-eP
} QYDI-<.(
} yRQ1Szbjli
insertSort(data,0,1); $SA
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} 5IzCQqOPgX
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/** /8:e|
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* @param data @S~n^v,)
* @param j 6&~Z3|<e
* @param i 8N j}
*/ d7g$9&/q
private void insertSort(int[] data, int start, int inc) { i,RbIZnJ
int temp; *h?}~!AjY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KDP&I J
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} 9ec#'i=
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快速排序: YGyw^$.w
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package org.rut.util.algorithm.support; 1p/_U?H:|
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import org.rut.util.algorithm.SortUtil; ^^uY)AL
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/** X?r$o>db
* @author treeroot J1M9),
* @since 2006-2-2 MdkL_YP}.
* @version 1.0 D}ZPgt#
*/ (yT&&_zY4
public class QuickSort implements SortUtil.Sort{ K-.%1d@$y
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/* (non-Javadoc) h6`VU`pPI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mMu+MXTk<
*/ $Mx?Y9!
public void sort(int[] data) { Kp;<z<
quickSort(data,0,data.length-1); 1csbuR?
} fpzEh}:H\
private void quickSort(int[] data,int i,int j){ 3-0jxx(
int pivotIndex=(i+j)/2; 51AA,"2[_
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SortUtil.swap(data,pivotIndex,j); ^h`rA"F\
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int k=partition(data,i-1,j,data[j]); }Vm'0
SortUtil.swap(data,k,j); ^6CPC@B1
if((k-i)>1) quickSort(data,i,k-1); B.b sU
if((j-k)>1) quickSort(data,k+1,j); I[06R
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} .lz=MUR
/** &MrG ,/
* @param data $S/WAw,/
* @param i &MONg=s3
* @param j *TxR2pC}
* @return IMy!8$\u
*/ >;xkiO>Y
private int partition(int[] data, int l, int r,int pivot) { VdL }$CX$
do{ eNFA.*p<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WL\*g] K4
SortUtil.swap(data,l,r); r6:nYyF$)v
} 8rz,MsFR
while(l SortUtil.swap(data,l,r); sY}0PB
return l; #g
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} %we! J%'Y]
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改进后的快速排序: 4`"Q!T_'
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package org.rut.util.algorithm.support; 7'{Y7]+z+
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import org.rut.util.algorithm.SortUtil; ef:Zi_o
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/** *+ O
* @author treeroot s*kSl:T@O
* @since 2006-2-2 d\ Xijy
* @version 1.0 R"71)ob4
*/ 4?x$O{D5?{
public class ImprovedQuickSort implements SortUtil.Sort { H)+wkR!~
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private static int MAX_STACK_SIZE=4096; bxww1NG>|Z
private static int THRESHOLD=10; %bTXu1
/* (non-Javadoc) ;q2e[ y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qd
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*/ !R$t>X
public void sort(int[] data) { &<5oDdC
int[] stack=new int[MAX_STACK_SIZE]; ZV:0:k.x
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int top=-1; `lE8dwL
int pivot; /}-LaiS
int pivotIndex,l,r; TUR2|J@n
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stack[++top]=0; !*B1Eo--cN
stack[++top]=data.length-1; [V,f@}m
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while(top>0){ :YN,cI d*
int j=stack[top--]; qH*Fv:qnM
int i=stack[top--]; U\tujK1
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