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。 (t&`m[>K
插入排序: ?&,6Y'"
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package org.rut.util.algorithm.support; OSUiS`k
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import org.rut.util.algorithm.SortUtil; xWa[qCr
/** 0&|M/
* @author treeroot [R8BcO(
* @since 2006-2-2 r9bAbE
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* @version 1.0 C_ d|2C6
*/ W[`ybGR<
public class InsertSort implements SortUtil.Sort{ 52#
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/* (non-Javadoc) `%#_y67v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KLG .?`h:
*/ r8*xp\/
public void sort(int[] data) { !WGQ34R {
int temp; S/pU|zV[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TBJ?8W(
} X1}M_h%
} <W3p!
} 7z, $
OA9P"*
} 91&=UUkK?
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冒泡排序: ^)Y3V-@t
&Q"vXs6Gt
package org.rut.util.algorithm.support; N
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import org.rut.util.algorithm.SortUtil; Zp_j\B
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/** NW0se
DL
* @author treeroot 3"0QW4A
* @since 2006-2-2 =z9,=rR4
* @version 1.0
7|dm"%@
*/ U,yZ.1V^:
public class BubbleSort implements SortUtil.Sort{ }0H<G0
S3U]AH)C
/* (non-Javadoc) -b+)Dp~$p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # Dgkl
*/ yRyRH%p)
public void sort(int[] data) { 7u^wO<
int temp; bL0]Yuh
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~MB)}!S:
if(data[j] SortUtil.swap(data,j,j-1); $X.F=Kv
} ?XyrG1('
}
}lPWA/
} #<&@-D8
} xZ2 1iQeN
}2BNy9q@
} d@*dbECG
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选择排序: RDQ]_wsyKG
O(0a l#Fvj
package org.rut.util.algorithm.support; BOvJEs!UX
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import org.rut.util.algorithm.SortUtil; tQ'R(H`
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/** ?Y\WSI?i
* @author treeroot g9g ]X
* @since 2006-2-2 .uX(-8n ~
* @version 1.0 ~v/`
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*/ (kK8
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public class SelectionSort implements SortUtil.Sort { *Z.{1
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/* (qc<'$o
* (non-Javadoc) oliVaavj
* 13 JG[,w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;2fzA<RkK
*/ K]>4*)A:
public void sort(int[] data) { {nA+-=T
int temp; ~KGE(o4p
for (int i = 0; i < data.length; i++) { "k [$euV
int lowIndex = i; Wx;%W"a
for (int j = data.length - 1; j > i; j--) { UDcr5u eKn
if (data[j] < data[lowIndex]) { IWN18aaL?
lowIndex = j; S$wC{7?f
} 'i3-mZ/|8
} O@HD'
SortUtil.swap(data,i,lowIndex); w\Q(wH'
} l&] %APL
} MB>4Y]rtU
Z
*l&<q>#
} ~]W
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Shell排序: d@Bd*iI<
\Z%_dT}
package org.rut.util.algorithm.support; xQ?$H?5B<
k-s|gC4
import org.rut.util.algorithm.SortUtil; cqZlpm$c
7I(QTc)*
/** <Z]j89wzDZ
* @author treeroot E){ODyk
* @since 2006-2-2 (]fbCH:
* @version 1.0
8rU| Oh
*/ z'>b)wY](
public class ShellSort implements SortUtil.Sort{ 8193d%Wb
@1pfH\m
/* (non-Javadoc) 0H}O6kU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZL!5dT&@W
*/ V%M@zd?u.
public void sort(int[] data) { gK *=T
for(int i=data.length/2;i>2;i/=2){ Jl6biJx
for(int j=0;j insertSort(data,j,i); |w_l~xYV)
} ct(euPU
} 6@(o8i
insertSort(data,0,1); R>[G6LOG
} OCqknA
5HAAa I
/** /b4>0DXT5
* @param data -"Nvu
* @param j X1u\si%.4S
* @param i \4OU+$m
*/ h2+"e# _
private void insertSort(int[] data, int start, int inc) { H}usL)0&&
int temp; ,MLAW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6TQ[2%X'
} {FN4BC`3+
} [NGq$5
} 4*q6#=G
VjiwW%UOM
} \)g}
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快速排序: 9I1i(0q
<{eJbN p
package org.rut.util.algorithm.support; %wJ>V-\e
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import org.rut.util.algorithm.SortUtil; ZU7u>
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/** <@n3vO6
* @author treeroot `,c~M
* @since 2006-2-2 E.x<J.[Y
* @version 1.0 `P;3,@
e
*/ =$kSn\L,
public class QuickSort implements SortUtil.Sort{ ~>%% kQt
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/* (non-Javadoc) VW] ,R1q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
7<5=fYbr
*/ &_]bzTok
public void sort(int[] data) { 8feLhWg'P
quickSort(data,0,data.length-1); N;cSR\Ng
} 9J}^{AA
private void quickSort(int[] data,int i,int j){ E,A9+OKxJ
int pivotIndex=(i+j)/2; urD{'FQf
file://swap 8tT/w5
SortUtil.swap(data,pivotIndex,j); _tnoq;X[
/ EVXkf0
int k=partition(data,i-1,j,data[j]); |[/XG2S
SortUtil.swap(data,k,j); EhOB+Mc1
if((k-i)>1) quickSort(data,i,k-1);
kL -f@CD
if((j-k)>1) quickSort(data,k+1,j); TPi{c_
]
j'SGZnsy*
} 4"+v:t)z6{
/** D<^K7tJui
* @param data EuD$^#
* @param i NQd0$q
* @param j \Dx)P[Ur
* @return v@:m8Y(t
*/ 5lE9UoG[Q
private int partition(int[] data, int l, int r,int pivot) { OK:YnSk "
do{ t1o_x}z4.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3`njQvI\
SortUtil.swap(data,l,r); [5P1 pkZ
} o~'UWU'#
while(l SortUtil.swap(data,l,r); ~2XiKY;W?
return l; 9@
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} X/S%0AwZ
mGUG
} cN:ek|r
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改进后的快速排序: zgSv -h+f
U;U19[]
package org.rut.util.algorithm.support; 7I:<i$)V
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import org.rut.util.algorithm.SortUtil; XiyL563gh
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/** #4^D'r>pJ
* @author treeroot ~H626vT37
* @since 2006-2-2 )dRBI)P
* @version 1.0 KC-@2,c9V
*/ 8H{9
public class ImprovedQuickSort implements SortUtil.Sort { 8-Z|$F"
>td\PW~X
private static int MAX_STACK_SIZE=4096; <IQ}j^u-F
private static int THRESHOLD=10; e[.JS6
/* (non-Javadoc) hJoh5DIE95
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E@)9'?q
*/ ]7%+SH,RdD
public void sort(int[] data) { TmgSV#G
int[] stack=new int[MAX_STACK_SIZE]; J/A UOInh
dYp} R>+
int top=-1; BbNl:`
int pivot; 1lHBg
int pivotIndex,l,r; t[bZg9;
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stack[++top]=0; frbeCBP&)
stack[++top]=data.length-1; k{+Gv}Y
m^1'aO_;q
while(top>0){ [mG:PTK3
int j=stack[top--]; ' "o2;J)7
int i=stack[top--]; 24d{ol)
@Yzb6@g"
pivotIndex=(i+j)/2; esHcE{GNOS
pivot=data[pivotIndex]; TZE;$:1vx>
+(o]E3
SortUtil.swap(data,pivotIndex,j); T=T1?@2C
.v#Tj|w^
file://partition E"t79dD
l=i-1; [gE2;J0*
r=j; d>`s+B9K0
do{ `g,i`<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GuRJ
SortUtil.swap(data,l,r); 7j{63d`2
} gib;> nuBK
while(l SortUtil.swap(data,l,r); ne'Y {n(8%
SortUtil.swap(data,l,j); Jnq}SUev
.OvH<%g!.
if((l-i)>THRESHOLD){ NAEAvXj
stack[++top]=i; ?lQ-HO Aw
stack[++top]=l-1; bBXUD;$
} 2@$`xPg
if((j-l)>THRESHOLD){ r[kmgPld
stack[++top]=l+1; 3rVWehCv
stack[++top]=j; Hu7WU;w
} "v5jYz5M
9rM6kLD
} d?1[xv;
file://new InsertSort().sort(data); 9
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insertSort(data); |F52)<\
} C3e0d~C
/** #~;:i
* @param data ;Qdw$NuW
*/ Te&5IB-
private void insertSort(int[] data) { :pg]0X;
int temp; *d,Z?S/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FKkL%:?
} ,Q>wcE6v
} fdzaM&
} 1<&nHFJ;[
t,R4q*
} Q`[J3-Q*{
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G9M
归并排序: iig@$
i#
kZH IzU
package org.rut.util.algorithm.support; $}Ky6sBnvO
vS+E`[
import org.rut.util.algorithm.SortUtil; tJZ3P@ L
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/** #(Ezt% ^
* @author treeroot {&s.* 5
* @since 2006-2-2 5SwQ9#
* @version 1.0 DeRC_ [
*/ -!pg1w06
public class MergeSort implements SortUtil.Sort{ 3`DwKv`+
x_BnWFP
/* (non-Javadoc) *odwg$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kU[#.
y=%p
*/ ?
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public void sort(int[] data) { fs%l j_t
int[] temp=new int[data.length]; )w&k&TY4H
mergeSort(data,temp,0,data.length-1); R{SN.% {;
} K._*
~-A
"}jv5j5
private void mergeSort(int[] data,int[] temp,int l,int r){ QAKA3{-(
int mid=(l+r)/2; nM6/c
if(l==r) return ; \TTt!"aK
mergeSort(data,temp,l,mid); xBKis\b
mergeSort(data,temp,mid+1,r); WxI_wRKx
for(int i=l;i<=r;i++){ dI$M9;
temp=data; R}Z2rbt
} cXG$zwS\
int i1=l; Q[.HoqWK
int i2=mid+1; ?cD2EX%(
for(int cur=l;cur<=r;cur++){ >p@v'h/Cr
if(i1==mid+1) \} +b_J6-
data[cur]=temp[i2++]; zkmfu~_)
else if(i2>r) I 7s}{pG
data[cur]=temp[i1++]; t{Xf3.
else if(temp[i1] data[cur]=temp[i1++]; g~Agy
else ,)7y?*D}
data[cur]=temp[i2++]; a) 5;Od
} P`!31P#]L
} kC4}@{4i
m #}%l3$
} (SGU]@)g
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改进后的归并排序: 6F4OISy%3
VLs%;|`5D
package org.rut.util.algorithm.support; ;$$.L
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import org.rut.util.algorithm.SortUtil; xRPUGGv
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/** KJ;NcUq
* @author treeroot !Au 9C
* @since 2006-2-2 \rY<DxtOq
* @version 1.0 K"U[OZC`
*/ @Zov&01
public class ImprovedMergeSort implements SortUtil.Sort { -iJ @K
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private static final int THRESHOLD = 10; ]\Q9j7}37+
<\C/;
/* }qn@8}
* (non-Javadoc) i*-L_!cc:
* H_<hZUB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >lIQM3
*/ /$,~|X;&
public void sort(int[] data) { EoD[,:*
int[] temp=new int[data.length]; >,s.!vpK
mergeSort(data,temp,0,data.length-1); ;^Hg\a
} &$+nuUA
`'
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private void mergeSort(int[] data, int[] temp, int l, int r) { l&LrcM
int i, j, k; UpIt"+d2&
int mid = (l + r) / 2; yCLDJ%8
if (l == r) |#_`aT"
return; Eggdj+
if ((mid - l) >= THRESHOLD) l!^+Xeg~
mergeSort(data, temp, l, mid); /!L#cUog
else v<c@bDZ>
insertSort(data, l, mid - l + 1); d0MF\yxh
if ((r - mid) > THRESHOLD) kz+OUA@~
mergeSort(data, temp, mid + 1, r); ;&v~tD7
else ri?>@i-9=
insertSort(data, mid + 1, r - mid); uy^vQ/
"ZU CYYre
for (i = l; i <= mid; i++) { p{BBqKv
temp = data; FqT2+VO~
} 2N$yn
for (j = 1; j <= r - mid; j++) { Zn]njf1x
temp[r - j + 1] = data[j + mid]; fF*{\
} 6I`Lszs
int a = temp[l]; EA+}Rf6}
int b = temp[r]; slWO\AYiO
for (i = l, j = r, k = l; k <= r; k++) { rfVHPMD0
if (a < b) { P&0o~@`cL
data[k] = temp[i++]; I"1H]@"=
a = temp; mcB8xE
} else { /9..hEq^
data[k] = temp[j--]; NiCB.a
b = temp[j]; !?u{2D
} ~gAp`Q
} ;mw$(ZKa#
} _K5R?"H0
C+=8?u<
/** S"wn0B$"
* @param data .3JLa8y
* @param l t'pY~a9F
* @param i ]&mN~$+C
*/ uO,9h0y0W
private void insertSort(int[] data, int start, int len) {
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 50l!f7
} ,-GkP>8f(
} Ja@zeD)f"
} wQV[ZfU^h
} eumpNF%$
E"l/r4*f@
堆排序: 1ae,s{|
&+v!mw >
package org.rut.util.algorithm.support; $V0G[!4
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import org.rut.util.algorithm.SortUtil; =KctAR;
5RysN=czA
/** <@puWm[p
* @author treeroot )* \N[zm
* @since 2006-2-2 v.Y?<=E+<d
* @version 1.0 6|-V{
*/ L~PBD?l
public class HeapSort implements SortUtil.Sort{ j~Cch%%G
<HC5YA)4
/* (non-Javadoc) >ARZ=x[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yD-L:)@"
*/ C=&rPUX{
public void sort(int[] data) { UHh7x%$n
MaxHeap h=new MaxHeap(); ipThwp9
h.init(data); ,sqxxq
for(int i=0;i h.remove(); +nj
2
System.arraycopy(h.queue,1,data,0,data.length); ]?#E5(V@x
} &Oih#I
g]V_)}
private static class MaxHeap{ >Yf)]e-
}CCTz0[D"
void init(int[] data){ 2`?58&
this.queue=new int[data.length+1]; =
@EN]u
for(int i=0;i queue[++size]=data; J:!m49fF
fixUp(size); .a0]1IkatV
} ,L.*95,
} ~g|Z6-?4Jj
P d"=&Az|
private int size=0; z3bRV{{YqN
nN]GO}
private int[] queue; 1j!LK-
w I7iE4\vz
public int get() { fy6<KEea
return queue[1]; NZTG)<
} T|%pvTIe
5(+PIKCjC
public void remove() { <U]!1
SortUtil.swap(queue,1,size--); qq,#bRe
fixDown(1); 5!b+^UR;z
} $Sx(vq6(
file://fixdown /~O>He
private void fixDown(int k) { j^Vr!y
int j; @X?7a]+;8
while ((j = k << 1) <= size) { ye-EJDZN
if (j < size %26amp;%26amp; queue[j] j++; U $2"ZyFii
if (queue[k]>queue[j]) file://不用交换 g"dq;H
break; XB.xIApmy
SortUtil.swap(queue,j,k); $\w<.)"#
k = j; <Pm!#)-g9
} b:M1P&R
} nhu;e}[>
private void fixUp(int k) { )9]DJ!]&Q"
while (k > 1) { +&*D7A>~p
int j = k >> 1; aWCZ1F
if (queue[j]>queue[k]) 2YbI."ob
break; nc2=S^Fqu
SortUtil.swap(queue,j,k); [B,w\PLub
k = j; ]VkM)< +
} 7'~Oai~r
} T)Zef
)/y7Fh
} X7g@.Oy`
IrMUw$
} AbExJ~JV\g
#hZ`r5GvTj
SortUtil: p=jpk@RX
vmj'X>Q
package org.rut.util.algorithm; li37*
[pRRBMho
import org.rut.util.algorithm.support.BubbleSort; 1`Ig A0V`"
import org.rut.util.algorithm.support.HeapSort; Ct<]('Hm(
import org.rut.util.algorithm.support.ImprovedMergeSort; 0R-J
\
import org.rut.util.algorithm.support.ImprovedQuickSort; Ym8
V)
import org.rut.util.algorithm.support.InsertSort; D^Gs_z$['
import org.rut.util.algorithm.support.MergeSort;
F%tV^$%
import org.rut.util.algorithm.support.QuickSort; )yt_i'D}
import org.rut.util.algorithm.support.SelectionSort; (Qcd !!
import org.rut.util.algorithm.support.ShellSort; #
E{2 !Z
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uv
/** zCe[+F
* @author treeroot k6$Ft.0d1Z
* @since 2006-2-2 RD|DHio%
* @version 1.0 {44#<A<
*/ `9*
|Y 8:
public class SortUtil { gWu<5Y=C
public final static int INSERT = 1; DP8%/CV!*
public final static int BUBBLE = 2; lS96Z3k"SB
public final static int SELECTION = 3; Due@'
public final static int SHELL = 4; }1#prQ0F
public final static int QUICK = 5; YZk.{#^ c
public final static int IMPROVED_QUICK = 6;
I !J'
public final static int MERGE = 7; jf^BEz5
public final static int IMPROVED_MERGE = 8; EvKzpxCh
public final static int HEAP = 9; X=KC+1e
&~aS24c
public static void sort(int[] data) { 7C9_;81_Dt
sort(data, IMPROVED_QUICK); jcbq#
} ,(A
$WT@e
private static String[] name={ ZYS]Et[Q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^)UX#D3b
}; [Qqomm.[\w
AGGT]
58|
private static Sort[] impl=new Sort[]{ CUN1.i<pk8
new InsertSort(), `k6ZAOQtX
new BubbleSort(), v{X<6^g
new SelectionSort(), mIZ6[ ?
new ShellSort(), x']Fe7nv
new QuickSort(), Gsu?m
new ImprovedQuickSort(), #\8"d
new MergeSort(), Am!OLGG4
new ImprovedMergeSort(), U38~m}c
new HeapSort() :Y Ki
}; +# 3e<+!F
'.wb= C
public static String toString(int algorithm){ !(HPx@_
return name[algorithm-1]; bE;c&g
} )|=4H>?%
ek"Uq RY
public static void sort(int[] data, int algorithm) { zP&D
impl[algorithm-1].sort(data); tv_&PIu]L
} mxE<
cgi:"y F
public static interface Sort { b_X&>^4Dkl
public void sort(int[] data); ,M9e *
} bq2f?uD-}
FeZ*c~q
public static void swap(int[] data, int i, int j) { Za,myuI+
int temp = data; \ZA@r|=$
data = data[j]; \10KIAQ
data[j] = temp; .JOZ2QWm<
} 2?{'(iay
} 6>]w1
H