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。 SS*3Qx:[
插入排序: :e rfs}I
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package org.rut.util.algorithm.support; i#bcjH
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import org.rut.util.algorithm.SortUtil; '@dk3:3t
/** zw[ #B #
* @author treeroot g$h`.Fk,
* @since 2006-2-2 jG["#5<?
* @version 1.0 9v@P|
*/ 7A"v:e
public class InsertSort implements SortUtil.Sort{ F4DJML-(
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/* (non-Javadoc) q1pB~eg5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A9Icn>3?`(
*/ *BHp?cn;F2
public void sort(int[] data) { *aW:Z6N
int temp; crQ_@@X?<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =A{s,UP
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} _E2W%N
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冒泡排序: @{{6Nd5
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package org.rut.util.algorithm.support; XaF;IS@A
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import org.rut.util.algorithm.SortUtil; m:6*4_!
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/** `Wd4d2aLG
* @author treeroot q.VZ P
* @since 2006-2-2 W.BX6
* @version 1.0 B ?l0u
*/ wOg#J
public class BubbleSort implements SortUtil.Sort{ @%jY
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/* (non-Javadoc) upnX7as
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o.(Gja4
*/ F^.~37=@
public void sort(int[] data) { 4%#q.qI
int temp; %bS1$
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for(int i=0;i for(int j=data.length-1;j>i;j--){ _Kbj?j
if(data[j] SortUtil.swap(data,j,j-1); sQ.t3a3m
} *dN_=32u
} 5mX^{V&^
} kB.CeG]tk
} 3&6sQ-}*
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} @z^7*#vQv
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选择排序: |K" nSXzk
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package org.rut.util.algorithm.support; "7eL&
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import org.rut.util.algorithm.SortUtil; (|>rDk;
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/** 1Tr%lO5?6
* @author treeroot ^*w}+tB
* @since 2006-2-2 >pp#>{}
* @version 1.0 c
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*/ s
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public class SelectionSort implements SortUtil.Sort { )2Bb,p<Wr
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/* A/{!w"G
* (non-Javadoc) %=$Knc_!T^
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o=6 <?v7
*/ 6Yc(|>b!
public void sort(int[] data) { {u+=K-Bj
int temp; Z1Qv>@u
for (int i = 0; i < data.length; i++) { m>RtKCtP
int lowIndex = i; $ w+.-Tr
for (int j = data.length - 1; j > i; j--) { 1 e]D=2y
if (data[j] < data[lowIndex]) { :5BCW68le
lowIndex = j; \C>+ubF
} TV#>x!5!d
} 2j#Dwa(lZQ
SortUtil.swap(data,i,lowIndex); $N Mu
} s4QCun~m
} $E.Fgy:G
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} 1wm`a
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Shell排序: "0,FB4L[U5
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package org.rut.util.algorithm.support; c&N;r|N
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import org.rut.util.algorithm.SortUtil; p<z eaf0W
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/** J_fs}Y1q\
* @author treeroot ;mRZ_^V;
* @since 2006-2-2 ~9xkiu5~
* @version 1.0 xcn~KF8
*/ )EQz9
public class ShellSort implements SortUtil.Sort{ q]?)c
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/* (non-Javadoc) 99(@O,*(Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8a&c=9
*/ ,k=8|=aF
public void sort(int[] data) { IC (:RtJ
for(int i=data.length/2;i>2;i/=2){ k5J18S
for(int j=0;j insertSort(data,j,i); k14<E/
} G+Bk!o
} P3n#s2o6y
insertSort(data,0,1); \*'@F+
} c~O
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/** '=%`;?j
* @param data &3;"$P
* @param j [ZC\8tP`V
* @param i H(tC4'tA
*/ TET=>6
private void insertSort(int[] data, int start, int inc) { w-2#CX8jY
int temp; /H"fycZ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TnKv)%VF
} ]uMZvAjb
} _hJdC|/
} B :S8{
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} ]z5hTY
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快速排序: RgUQ:
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package org.rut.util.algorithm.support; 4L ]4WVc
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import org.rut.util.algorithm.SortUtil; |JF,n~n
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/** : r ~iFP*
* @author treeroot /}
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* @since 2006-2-2 qg=`=]j
* @version 1.0 (H&HSs
*/ [DDe}D3C
public class QuickSort implements SortUtil.Sort{ 8a`3eM~?[
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/* (non-Javadoc) )[J!{$&y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }e/vKWfT
*/ c0o Z7)*}
public void sort(int[] data) { Xwdcy J!
quickSort(data,0,data.length-1); }/&Zo=Q$
} )B"{B1(
private void quickSort(int[] data,int i,int j){ A[^#8evaK
int pivotIndex=(i+j)/2; nOd;Zw
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SortUtil.swap(data,pivotIndex,j); cW_wIy\]&
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int k=partition(data,i-1,j,data[j]); E:B"!Y6
SortUtil.swap(data,k,j); 1fMV$T==K
if((k-i)>1) quickSort(data,i,k-1); 4'*-[TKC
if((j-k)>1) quickSort(data,k+1,j); ,b -
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} 6E
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/** &V$cwB
* @param data 2ua!<^,
* @param i ]xMZo){[|
* @param j KJ32L
* @return 3^%2,
*/ jT$J~MpHh
private int partition(int[] data, int l, int r,int pivot) { ,cS#
do{ TP {\V>*Yz
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?!U.o1
SortUtil.swap(data,l,r); \V!{z;.fA
} j3;W-c`5
while(l SortUtil.swap(data,l,r); B !,&{[D
return l; f~\H|E8(
} #<"od '{U
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} keRLai7h
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改进后的快速排序: yc?L
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; yOQae m^O
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/** F7O*%y.';
* @author treeroot 9uWg4U
* @since 2006-2-2 !KOa'Ic$V
* @version 1.0 '}(>s%~
*/ ?M&@# lbG
public class ImprovedQuickSort implements SortUtil.Sort { c}n66qJF5
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;
private static int MAX_STACK_SIZE=4096; >'q]ypA1
private static int THRESHOLD=10; t !6sU]{
/* (non-Javadoc) j>;1jzr2}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (0Br`%!F
*/ syg{qtBz^
public void sort(int[] data) { Y%
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int[] stack=new int[MAX_STACK_SIZE]; = FV12(U
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int top=-1; $t^Td<
int pivot; R[l`# I
int pivotIndex,l,r; 4(P<'FK $
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stack[++top]=0; _;5zA"~c#@
stack[++top]=data.length-1; aW dI
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while(top>0){ u9v,B$S
int j=stack[top--]; (nmsw6
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int i=stack[top--]; wMN;<