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。 'Gwa[ |6i
插入排序: {Ic~}>w
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package org.rut.util.algorithm.support; m NkS!(L6
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import org.rut.util.algorithm.SortUtil; ]jo^P5\h>
/** bg.f';C
* @author treeroot &4M0 S+.
* @since 2006-2-2 ?DPNa
* @version 1.0 2 mM0\ja
*/ :NB|r
public class InsertSort implements SortUtil.Sort{ v%RcwVt|
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/* (non-Javadoc) &t)dE7u5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9y=$|"<(
*/ K07SbL7g!p
public void sort(int[] data) { VYw
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int temp; {SH+lX0]{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZUGuV@&-T
} _Eq*
} 6GVj13Nr
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} {2kw*^,l
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冒泡排序: b|U48j1A
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package org.rut.util.algorithm.support; gs;3NW
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import org.rut.util.algorithm.SortUtil; ,a_F[uK
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/** ow :}NI
* @author treeroot F@Bh>Vb
* @since 2006-2-2 d ; (&_;
* @version 1.0 s_Y1rD*B
*/ h%e}4U@X
public class BubbleSort implements SortUtil.Sort{ yjCY2T E
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/* (non-Javadoc) @l3L_;6a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>]^1J7Wz
*/ lhZWL}l
public void sort(int[] data) { 1B~H *=t4h
int temp; F 7+Gt
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for(int i=0;i for(int j=data.length-1;j>i;j--){ |a@$KF$
if(data[j] SortUtil.swap(data,j,j-1); p"^^9'`=
} "B`yk/GM]
} e6s-;
} > o{(f
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} zjd]65P
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选择排序: +gb2>fei&
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package org.rut.util.algorithm.support; 0Eq.l <
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import org.rut.util.algorithm.SortUtil; @+A`n21,O
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/** Alh"G6
* @author treeroot `X?l`H;#
* @since 2006-2-2 %XGwQB$zk8
* @version 1.0 IQ$l!)
*/ xQs2)
public class SelectionSort implements SortUtil.Sort { 2%g)0[1
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/* [.tqgU
* (non-Javadoc) 2d+IROA
* e"en
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;zI;oY#.y
*/ GRz`fO
public void sort(int[] data) { `T $lTP
int temp; s]Z/0:`
for (int i = 0; i < data.length; i++) { rC~hjViG.
int lowIndex = i; ~X;r}l=k<
for (int j = data.length - 1; j > i; j--) { +) 2c\1
if (data[j] < data[lowIndex]) { yBO88rfh>
lowIndex = j; Tysh~C|1
} 4&/u1u0
} (1\!6
SortUtil.swap(data,i,lowIndex); jM1|+o*Wr
} u>:sXm
} #tG/{R
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} 7SYU^GD
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Shell排序: N,|:=gD_
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package org.rut.util.algorithm.support; 6
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import org.rut.util.algorithm.SortUtil; eG26m_S=
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/** J'tc5Ip!}V
* @author treeroot c>d+q9M
* @since 2006-2-2 `.nkC_d
* @version 1.0 0}$",M!p
*/ gsufd{{
public class ShellSort implements SortUtil.Sort{ Uj}iMw,
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/* (non-Javadoc) sAS\-c'6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PIP2(-{ai
*/ SiHZco
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public void sort(int[] data) { g<oSTAw
for(int i=data.length/2;i>2;i/=2){ y]eH@:MJ;A
for(int j=0;j insertSort(data,j,i); hf P}+on%
} W|~Lmdzj
} msg&~"Z
insertSort(data,0,1); &O5%6Sv3d
} ~Bn#AkL
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/** /HH5Mn*
* @param data (qHI>3tpY
* @param j T#?KY
* @param i 2-nL2f!a{p
*/ cX"[#Em#
private void insertSort(int[] data, int start, int inc) { (i>VJr
int temp; _m0HgLS~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rFZB6A<(]
} ftsr-3!Vm
} -tZ2
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} )K>XLaG)
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快速排序: /Q5pAn -u
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package org.rut.util.algorithm.support; <||F$t
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import org.rut.util.algorithm.SortUtil; #B:J7&@fn
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/** VcIsAK".4[
* @author treeroot V|
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* @since 2006-2-2 3JEH
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* @version 1.0 N5csq(
*/ MzYTEe&-L
public class QuickSort implements SortUtil.Sort{ K$(&Qx}
3WS`,}
/* (non-Javadoc) ^*'|(Cv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j#y_#
*/ ?I)-ez
public void sort(int[] data) { ~|@ aV:k
quickSort(data,0,data.length-1); gt6*x=RCrQ
} \ntmD?kA
private void quickSort(int[] data,int i,int j){ )ruC_)
int pivotIndex=(i+j)/2; r|cl6s!P
file://swap EaFd1
SortUtil.swap(data,pivotIndex,j); pmB}a7
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int k=partition(data,i-1,j,data[j]); c`mJrS:
SortUtil.swap(data,k,j); b_cnVlN[
if((k-i)>1) quickSort(data,i,k-1); Y'S xehx
if((j-k)>1) quickSort(data,k+1,j); ?mS798=f
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} Xj"/6|X
/** fG;)wQJ
* @param data `R0>;TdT
* @param i =| S8.|r+
* @param j qfvd(w
* @return 1F-o3\
*/ *aS|4M-
private int partition(int[] data, int l, int r,int pivot) { 6 +^V
do{ *RUB`tEL
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iyU@|^B"Wa
SortUtil.swap(data,l,r); |uV1S^!A
} e"hm|'
while(l SortUtil.swap(data,l,r); Yi&;4vC
return l; V\%;S
} IV;juFw}G
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} \`jFy[(Pa'
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改进后的快速排序: <<LmO-92
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package org.rut.util.algorithm.support; !V$nU8p|
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import org.rut.util.algorithm.SortUtil; Hs~M!eK
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/** a-x8LfcbF
* @author treeroot NwD*EuPF :
* @since 2006-2-2 N+\#k*n?
* @version 1.0 26>e0hBh&
*/ 9z\q_0&i
public class ImprovedQuickSort implements SortUtil.Sort { !Qjpj KRy
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private static int MAX_STACK_SIZE=4096; kf_s.Dedw
private static int THRESHOLD=10; ?,]%V1(@V`
/* (non-Javadoc) 468LVe?0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3l->$R]
*/ kI]i,v#F
public void sort(int[] data) { 5&v'aiWK
int[] stack=new int[MAX_STACK_SIZE]; qi`*4cas*A
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int top=-1; *58<.L|
int pivot; @jN!j*Y H
int pivotIndex,l,r; |;6FhDW+'
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stack[++top]=0; 5|NM]8^^0[
stack[++top]=data.length-1; l Vo](#W
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while(top>0){ FT/H~|Z>
int j=stack[top--]; r.xGvo{iY
int i=stack[top--]; Vm_y,;/(-R
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pivotIndex=(i+j)/2; cz
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pivot=data[pivotIndex];
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SortUtil.swap(data,pivotIndex,j); EyI
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file://partition !w]!\H
l=i-1; y1cAw
r=j; 6=Kl[U0Y
do{ *W y0hnr;]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D(Zux8l
SortUtil.swap(data,l,r); _ D1bR7
} ,[,+ _A
while(l SortUtil.swap(data,l,r); .Di+G-#aEs
SortUtil.swap(data,l,j); RR{]^g51
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if((l-i)>THRESHOLD){ v+znKpE
stack[++top]=i; ^TVy:5Ag
stack[++top]=l-1; <5@+:7Dv
} hZY+dHa]
if((j-l)>THRESHOLD){ kWjCSC>jA
stack[++top]=l+1; J
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stack[++top]=j; 0?BT*
} Ooc,R(
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} i
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file://new InsertSort().sort(data); lEQ63)Z
insertSort(data); zu(/c
} S"CsY2;
/** 1m|Oi%i4
* @param data 0fxA*]h
*/
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private void insertSort(int[] data) { 9Vxsv*OR,
int temp; yrR<F5xge
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RQy|W}d_
} Ik>sd@X*|
} %((F}9_6
} tQ5gmj
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} .MhZ=sn
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归并排序: <'v?WV_
h\Op|#gIT
package org.rut.util.algorithm.support; F:n(yXA
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import org.rut.util.algorithm.SortUtil; yb*SD!
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/** DvF`KHsy
* @author treeroot .r[DqC
* @since 2006-2-2 4FQU$f
* @version 1.0 Q5;Km1(
*/ r9%4q4D?>9
public class MergeSort implements SortUtil.Sort{ j1v fp"J1
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/* (non-Javadoc) 7Nh6 `
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _I<eJ\
*/ [ k^6#TQcn
public void sort(int[] data) { $bF.6
int[] temp=new int[data.length]; X4BDl
mergeSort(data,temp,0,data.length-1); kFHq QsaG
} WUQ2[)<
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private void mergeSort(int[] data,int[] temp,int l,int r){ N12K*P[!
int mid=(l+r)/2; 1jh^-d5
if(l==r) return ; NVS U)#
mergeSort(data,temp,l,mid); )$P!7$C-
mergeSort(data,temp,mid+1,r); (jPN+yQ
for(int i=l;i<=r;i++){ `dMOBYV
temp=data; g`y
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} }LM^>M%
int i1=l; 4Yt:PN2
int i2=mid+1; F04`MY"
for(int cur=l;cur<=r;cur++){ j{7_p$JM
if(i1==mid+1) 1e'-rm
F
data[cur]=temp[i2++]; }bIEW ho
else if(i2>r) @0A0\2
data[cur]=temp[i1++]; uDafPTF
else if(temp[i1] data[cur]=temp[i1++]; FGr0W|?v
else fH`P8?](x
data[cur]=temp[i2++]; NJz8ANpro$
} =NSLx 2:T
} Z]1~9:7ap
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} ZJP.-` U
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改进后的归并排序:
b?CmKiM%
.7g^w+W
package org.rut.util.algorithm.support; j Z3N+_J1
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import org.rut.util.algorithm.SortUtil; %HL@O]ftS
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/** _q)`Y:2
* @author treeroot n~8-+$6OR
* @since 2006-2-2 ~fAdOh
* @version 1.0 ^ ^}
*/ 67 }y/C]<
public class ImprovedMergeSort implements SortUtil.Sort { 7eQ7\,^H
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private static final int THRESHOLD = 10; [bJ"*^M)
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/* TcpD*%wW
* (non-Javadoc) >Hic
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* gD _tBv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lk}R#n$
*/ 'iXjt
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public void sort(int[] data) { Mn7 y@/1
int[] temp=new int[data.length]; s8WA@)L
mergeSort(data,temp,0,data.length-1); =k2+VI
} zIH[
:
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private void mergeSort(int[] data, int[] temp, int l, int r) { W2%(a0p
int i, j, k; VpWax]'
int mid = (l + r) / 2; A8e b{qv
if (l == r) [9z<*@$-
return; bNevHKS
if ((mid - l) >= THRESHOLD) ^+mSf`5
mergeSort(data, temp, l, mid); Nq9Qsia&
else G+m|A*[>
insertSort(data, l, mid - l + 1); A}~hc&J
if ((r - mid) > THRESHOLD) xY5Idl->
mergeSort(data, temp, mid + 1, r); h}q+Dw.i
else 6b-d#H/1Y
insertSort(data, mid + 1, r - mid); Z:,HB]&;9
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for (i = l; i <= mid; i++) { q}ZZqYk
temp = data; "o<:[c9/
} 9V.)=*0hp
for (j = 1; j <= r - mid; j++) { k#JFDw\
temp[r - j + 1] = data[j + mid]; S?OK@UEJ
} s]5wzbF O
int a = temp[l]; @K4} cP
int b = temp[r]; @s/;y VVq
for (i = l, j = r, k = l; k <= r; k++) { x\3 ` W
if (a < b) { 89`AF1
data[k] = temp[i++]; MO9}Itg
a = temp; }UXj|SY
} else { lr +Kwve
data[k] = temp[j--]; qq[2h~6P]
b = temp[j]; }!Qo
wG
} .3{S6#
} d+fmVM?p
} 70lb6A
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/** #T#&qo#
* @param data z.e%AcX
* @param l 1
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1
* @param i &^ =t%A%#
*/ 0AJ6g@t[
private void insertSort(int[] data, int start, int len) { e1~C>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wy&