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。 SrOv*
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插入排序: iEy2z+/"^
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package org.rut.util.algorithm.support; ;j(*:Nt1
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import org.rut.util.algorithm.SortUtil; R`@7f$;wG
/** a8%T*mk(
* @author treeroot mz;ExV16
* @since 2006-2-2 ~7Nqwwx
* @version 1.0 #q9BU:
*/ E%stFyr9`/
public class InsertSort implements SortUtil.Sort{ Do^yer~
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/* (non-Javadoc) upJy,|5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7)Tix7:9S;
*/ #^ .G^d(=
public void sort(int[] data) { i12G\Ye
int temp; j.+,c#hFo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IBNb!mPu%
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冒泡排序: P>x88M
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package org.rut.util.algorithm.support; _n4`mL8>kH
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import org.rut.util.algorithm.SortUtil; P/]8+_K
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/** I>-}ys`[
* @author treeroot ?9 `T_,
* @since 2006-2-2 a<+Rw{
* @version 1.0 ,p\*cHB9
*/ AP=SCq;
public class BubbleSort implements SortUtil.Sort{ cmaha%3d
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/* (non-Javadoc) &;GoCU Le
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ dPgA~~
public void sort(int[] data) { /\1Q
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int temp; "e29j'u!*
for(int i=0;i for(int j=data.length-1;j>i;j--){ OU mZ|
if(data[j] SortUtil.swap(data,j,j-1); Tilr%D(Q
} +OB&PE
} Q-U,1b
} gKIN* Od
} (KfdN'vW
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} WFqOVI*l
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选择排序: '64/2x
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package org.rut.util.algorithm.support; &N%-.&t'
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import org.rut.util.algorithm.SortUtil; )%!X,
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/** R/^;,.
* @author treeroot o9v9
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* @since 2006-2-2 >g [Wnzf
* @version 1.0 DFGgyFay
*/ xrJ0
public class SelectionSort implements SortUtil.Sort { ~<osL
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/* xz,M>Ua
* (non-Javadoc) dsbz\w3:
* a<V
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I+Fr#1
*/ \}Pr!tk!
public void sort(int[] data) { i'#%t/ u
int temp; 8mX:*$qm:
for (int i = 0; i < data.length; i++) { Io_7
int lowIndex = i; >rh<%55P`
for (int j = data.length - 1; j > i; j--) { %g4)f9>
if (data[j] < data[lowIndex]) { Q?9eu%G6I
lowIndex = j; _&xkj8O
} fAvB!e
} HlX7A1i/
SortUtil.swap(data,i,lowIndex); ACgWT
} &0-Pl.M
} _'s5FlZq
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} dBW#PRg
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Shell排序:
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package org.rut.util.algorithm.support; WxF@'kdn*,
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import org.rut.util.algorithm.SortUtil; ;[Hrpl
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/** P~"""3de4
* @author treeroot xtp55"g
* @since 2006-2-2 KV'-^\
* @version 1.0 6r,zOs-I]
*/ q.lh
public class ShellSort implements SortUtil.Sort{ 'wTJX>
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/* (non-Javadoc) @{8805Dp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jbTyM"Y
*/ j !`2Z@
public void sort(int[] data) { zU};|Zw
for(int i=data.length/2;i>2;i/=2){ =iPQ\_ON@
for(int j=0;j insertSort(data,j,i); u\UI6/
} cuQ=bRIb
} 6[>Z y)P
insertSort(data,0,1); 2wgdrO|B
} 2{#=Ygb0
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/** \G1(r=fU
* @param data 2?owXcbx
* @param j oga0h'
* @param i ]^l-k@
*/ Xc]Q_70O
private void insertSort(int[] data, int start, int inc) { Qp>Q-+e0
int temp; PFeK;`[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O,KlZf_B
} =TXc- J
} yAVt[+0
} vy F(k3W
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} cGjkx3l*
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快速排序: W-ECmw(
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package org.rut.util.algorithm.support; cNqw(\rr
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import org.rut.util.algorithm.SortUtil; /?QBMI
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/** J7rfHhz
* @author treeroot $d7{ q3K&1
* @since 2006-2-2 S8Yh>j8-
* @version 1.0 aw/5#(1R
*/ n
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public class QuickSort implements SortUtil.Sort{ R2[!h1nZ
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/* (non-Javadoc) 3836Di:{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cqk6I gw
*/ Mxe
public void sort(int[] data) { %5H>tG`]
quickSort(data,0,data.length-1); YY<e]CriU
} Q /\Hc
private void quickSort(int[] data,int i,int j){ K?+Rq
int pivotIndex=(i+j)/2; `{I-E5x
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SortUtil.swap(data,pivotIndex,j); v|mZcAz
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int k=partition(data,i-1,j,data[j]); \<A@Nf"
SortUtil.swap(data,k,j); |4a#O8d
if((k-i)>1) quickSort(data,i,k-1); lL:J:
if((j-k)>1) quickSort(data,k+1,j); U=bZy,FT$
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} Q}jl1dIq
/** ?2b9N ~
* @param data [VP~~*b
* @param i .oo>NS
* @param j Fc<+N0M{
* @return e: :H1V
*/ BK]q^.7+:
private int partition(int[] data, int l, int r,int pivot) { Gwkp(9d
do{ vd<"
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ws`P(WHm
SortUtil.swap(data,l,r); ,*Yu~4
} 07+Qai-]
while(l SortUtil.swap(data,l,r); <kmn3w,vi
return l; w~g)Dz2G
} r
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改进后的快速排序: vQ}llA
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package org.rut.util.algorithm.support; rB:W\5~7
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import org.rut.util.algorithm.SortUtil; *^u5?{$l(
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/** |ldRs'c{
* @author treeroot
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* @since 2006-2-2 ,#r>#fi0
* @version 1.0 ""ICdZ_A
*/ r#pC0Yj!3
public class ImprovedQuickSort implements SortUtil.Sort { _`zj^*%
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private static int MAX_STACK_SIZE=4096; #\$R^u]!
private static int THRESHOLD=10; 5!G}*u.
/* (non-Javadoc) u1&pJLK0[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ij }RlYQz
*/ ~$i36"
public void sort(int[] data) { ]W%<<S
int[] stack=new int[MAX_STACK_SIZE]; ?c^0%Op
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int top=-1; jC<!Ny-$
int pivot;
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int pivotIndex,l,r; LQs2!]?HT
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stack[++top]=0; :WTO*M
stack[++top]=data.length-1; \qqt/
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while(top>0){ T?c:z?j_9
int j=stack[top--]; >_]j{}~\k
int i=stack[top--]; |}\et
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pivotIndex=(i+j)/2; Kuy,qZv!"
pivot=data[pivotIndex]; P/?`
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SortUtil.swap(data,pivotIndex,j); Q': }'CI
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file://partition R1FBH:Iu
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do{ r"a0!]n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W^q;=D6uh
SortUtil.swap(data,l,r); |[?"$g9v
} ".eD&oX{
while(l SortUtil.swap(data,l,r); &/4W1=>(
SortUtil.swap(data,l,j); 'k#^Z
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if((l-i)>THRESHOLD){ %uyRpG3,
stack[++top]=i; YZdp/X6x
stack[++top]=l-1; ^e>`ob
} vO"Sy{)Z>
if((j-l)>THRESHOLD){ 2*5Z|
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stack[++top]=l+1; XU .FLNe
stack[++top]=j;
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}
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} $z]gy]F
file://new InsertSort().sort(data); C w`v\
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insertSort(data); E3y"
} E[>4b7{g:
/** ewSFB <
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* @param data T"XP`gk
*/ w9h\J#f
private void insertSort(int[] data) { i!<