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。 eC4[AX6e
插入排序: l|[N42+
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package org.rut.util.algorithm.support; 4F:\-O
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import org.rut.util.algorithm.SortUtil; SKN`2[ahD
/** Wvh#:Z
* @author treeroot &Z@o Q
* @since 2006-2-2 =y*IfG9b
* @version 1.0 vh%B[brUJ
*/ eo?bL$A[s
public class InsertSort implements SortUtil.Sort{ FD
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/* (non-Javadoc) %[TR^Th6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rs[T=C Q
*/ !;A\.~-!G
public void sort(int[] data) { T7%S
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int temp; H*R"ntI?w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >+1duAC
} _TZRVa_
} JH9J5%sp
} C<tl/NC
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} (w3YvG.
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冒泡排序: $6 f3F?y7
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package org.rut.util.algorithm.support; va@Lz&sAE%
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import org.rut.util.algorithm.SortUtil; Ti5-6%~&
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/** 5t]H?b8
* @author treeroot XRi8Gpg
* @since 2006-2-2 A;M'LM- M
* @version 1.0 CD~.z7,LC
*/ }Sv:`9=
public class BubbleSort implements SortUtil.Sort{ a`>B Ly5o
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/* (non-Javadoc) GD$l||8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q 2E_A
*/ y<Ot)fa$
public void sort(int[] data) { Dp9+HA9t
int temp; 4tBYR9|
for(int i=0;i for(int j=data.length-1;j>i;j--){ `|q(h Ow2
if(data[j] SortUtil.swap(data,j,j-1); W'TZ%K) I
} ?e 4/p
} b]KBgZ
} 4kx
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} rey!{3U
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选择排序: R6->t #n,
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package org.rut.util.algorithm.support; -iZ`Y?
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import org.rut.util.algorithm.SortUtil; [4)F f
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/** S
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* @author treeroot @r1_U,0e
* @since 2006-2-2 kAUymds;O
* @version 1.0 sW\!hW1*x
*/ 1'Dai `
public class SelectionSort implements SortUtil.Sort { pQB."[n
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/* Ny/MJ#Lq
* (non-Javadoc) VIf.q)_k
* dM@1l1h/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N;%6:I./
*/ -KbYOb
public void sort(int[] data) { ns4,@C$
int temp; Ow,b^|
for (int i = 0; i < data.length; i++) { HGg@ _9tW
int lowIndex = i; w0unS`\4
for (int j = data.length - 1; j > i; j--) { jebx40TA3
if (data[j] < data[lowIndex]) { Wd
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lowIndex = j; BZ^}J!Q'*
} .=;
;
} x,'!gT:j
SortUtil.swap(data,i,lowIndex); '|=;^Z7.K
} >yDZw!C
} X}0cCdW
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} ?aMOZn?
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Shell排序: *Pg2c(Vg
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package org.rut.util.algorithm.support; #`s"WnP9'!
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import org.rut.util.algorithm.SortUtil; 9gZ$
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/** +"VP-s0
* @author treeroot BDVtSs<7
* @since 2006-2-2 /Ci<xmP
* @version 1.0 QmIBaMI#
*/ 0m ? )ROaJ
public class ShellSort implements SortUtil.Sort{ :M5l*sIO2
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/* (non-Javadoc) &+R?_Ooibk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nQS|Lt_+
*/ rVsJ`+L
public void sort(int[] data) { e(G|;a
for(int i=data.length/2;i>2;i/=2){ w%sT{(Vd`C
for(int j=0;j insertSort(data,j,i); Du){rVY^d
} YK~%x o
} PFK
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insertSort(data,0,1); CJI~_3+K
} B7vpsSL
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/** h)nG)|c
* @param data $,'*f?d
* @param j dcT80sOC
* @param i Xn\jO>[Ef
*/ t&DEb_"De
private void insertSort(int[] data, int start, int inc) { &jr3B;g!C
int temp; {[ >Kob1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dC4'{n|7
} Mb7I[5v
} ,6W>can
} RCLeA=/N@0
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} 4ss4kp_>
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快速排序: L4?IHNB
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package org.rut.util.algorithm.support; o%*xvH*A
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import org.rut.util.algorithm.SortUtil; P
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/** Jpo(Wl
* @author treeroot 9Lfv^V0
* @since 2006-2-2 gKCX|cULY
* @version 1.0 Oz#{S:24M+
*/ pFz`}?c0
public class QuickSort implements SortUtil.Sort{ ]"1DGg \A
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/* (non-Javadoc) ,3 u}x,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jqi%|,/] N
*/ ##4HYQ%E
public void sort(int[] data) { $7A8/#
quickSort(data,0,data.length-1); *G9V'9
} m<2M4u
private void quickSort(int[] data,int i,int j){ r-/`"j{O!
int pivotIndex=(i+j)/2; %GIr&V4|
file://swap G;XxBA
SortUtil.swap(data,pivotIndex,j); -+-_I*(
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int k=partition(data,i-1,j,data[j]); qA5r
SortUtil.swap(data,k,j); *EwR!L*
if((k-i)>1) quickSort(data,i,k-1); Yk Qd
if((j-k)>1) quickSort(data,k+1,j); _/<x
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} 2SR: FUV/
/** 0Pi:N{x8
* @param data QUQ'3
* @param i tcog'nAz
* @param j R0
* @return LvYB7<zk>
*/ fL7xq$K
private int partition(int[] data, int l, int r,int pivot) { cDkf qcC
do{ ,UdVNA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lBGQEP3;
SortUtil.swap(data,l,r); /fV;^=:8c
} 0h7r&t%YsV
while(l SortUtil.swap(data,l,r); OY@ %p}l
return l; Q#[9|A9
} WVvvI9
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} As<bL:>dE
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改进后的快速排序: A1zjPG&]
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package org.rut.util.algorithm.support; Alw3\_X
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import org.rut.util.algorithm.SortUtil; l0A&9g*l2
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/** N^:9Fz
* @author treeroot #|PS&}6wU
* @since 2006-2-2 wz ~d(a#
* @version 1.0 O/(xj2~$J
*/ 0F><P?5
public class ImprovedQuickSort implements SortUtil.Sort { w}cPs{Vi"
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private static int MAX_STACK_SIZE=4096; oIj#>1~c%
private static int THRESHOLD=10; Pw!MS5=r
/* (non-Javadoc) i5,kd~%O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xAMW-eF?d
*/ <
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public void sort(int[] data) { O55 xS+3^k
int[] stack=new int[MAX_STACK_SIZE]; 9o:Lz5o
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int top=-1; /{--+
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int pivot; Whf.fK
int pivotIndex,l,r; W'+:'_{ j:
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stack[++top]=0; G?/DrnK:
stack[++top]=data.length-1; naznayy
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while(top>0){ 7,9=uk>0\
int j=stack[top--]; 2JcjZn
int i=stack[top--]; HYSIN^<oy
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pivotIndex=(i+j)/2; (|1A?@sJ#h
pivot=data[pivotIndex]; O2dW6bt
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SortUtil.swap(data,pivotIndex,j); @xYlS5{
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file://partition D#JL!A%O
l=i-1; 0o*8#i/)!3
r=j; Cg?&wj<
do{ +<3XJ7D
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ' x35=@
SortUtil.swap(data,l,r); o:P}Wg/NK
} 8::$AQL3
while(l SortUtil.swap(data,l,r); 3Xy-r=N. l
SortUtil.swap(data,l,j); 6?~"V
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if((l-i)>THRESHOLD){ ly_HWuFJ3
stack[++top]=i; ktBj|-'>
stack[++top]=l-1; <oA7'|Bu<
} OCaq3_#tZ
if((j-l)>THRESHOLD){ @wo(tf=@P
stack[++top]=l+1; !1{e|p
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stack[++top]=j; %Ax3;g#
} rb+j*5Es
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} T@&K-UQ
file://new InsertSort().sort(data); qPy1;maXP
insertSort(data); (w/T-*
} k" PayyAC
/** (I{rLS!o,L
* @param data xQXXC|T
*/ Zxs|%bQ
private void insertSort(int[] data) { Q&=w_Wc
int temp; MWpQ^dL_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %r}{hq4
} :^WKT
} ,J^b0@S
} z(Pe,zES
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} ,\
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归并排序: v}O30wE
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package org.rut.util.algorithm.support; }v!$dr,j'
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import org.rut.util.algorithm.SortUtil; EwC{R`
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/** #W'HR
* @author treeroot B9$jSD
* @since 2006-2-2 `YLD`(\
* @version 1.0 bg&zo;Ck8T
*/ +*T7@1
public class MergeSort implements SortUtil.Sort{ SmdjyK1~8
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/* (non-Javadoc) qx8fRIK%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gL[yA?GoM
*/ w' OXlR
public void sort(int[] data) { 9N<<{rQ,F
int[] temp=new int[data.length]; D2!X?"[P
mergeSort(data,temp,0,data.length-1); o(
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} =K{"{5Wb
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private void mergeSort(int[] data,int[] temp,int l,int r){ qnJt5
int mid=(l+r)/2; P'*)\faw
if(l==r) return ; 0Lc9M-Lg
mergeSort(data,temp,l,mid); cU@SIJ)
mergeSort(data,temp,mid+1,r); D@|W<i-
for(int i=l;i<=r;i++){ )5%'.P>
temp=data; V_RTI.3p
} Z!@~>i
int i1=l; T:Hr&ws4
int i2=mid+1; OK6]e3UO
for(int cur=l;cur<=r;cur++){ %Nhx;{
if(i1==mid+1) feNdMR7eM
data[cur]=temp[i2++]; ##;Er47@^
else if(i2>r) NufLzg{
data[cur]=temp[i1++]; "@d[h ,TM
else if(temp[i1] data[cur]=temp[i1++]; ]2'na?q9
else #iWSDy
data[cur]=temp[i2++]; =fve/_Q~
} ZF|+W?0&%
} C] 9p5Hs
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} < hO
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改进后的归并排序: 5ish\"
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package org.rut.util.algorithm.support; 1_
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import org.rut.util.algorithm.SortUtil; dBe`p5Z
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/** c`WHNky%j
* @author treeroot 8&~~j7p,
* @since 2006-2-2 X
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* @version 1.0 $m+sNEAa
*/ P=&o%K,:f
public class ImprovedMergeSort implements SortUtil.Sort { On@<J&%
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private static final int THRESHOLD = 10; &q