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。 w*@9:+
插入排序: 'f %oL/,
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package org.rut.util.algorithm.support; TOqxl
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import org.rut.util.algorithm.SortUtil; Ft :_6T%
/** :m'(8s8
* @author treeroot XWz~*@ci
* @since 2006-2-2 67Tu8I/r
* @version 1.0 #t# S(A9)
*/ ecvZwL
public class InsertSort implements SortUtil.Sort{ qM^y@B2MO
0f+]I=1\
/* (non-Javadoc) xTcY&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
#^-'q`)
*/
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public void sort(int[] data) { 4 #lLC-k
int temp; y^{4}^u-^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \j
we
} 5(Q-||J
} FS?1O"_
} #=m:>Q?%z
%A&g-4(
} <x$fD37
m<MN.R7
冒泡排序: _\,4h2(
K_N`My
package org.rut.util.algorithm.support; 9Y2(.~w6X
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import org.rut.util.algorithm.SortUtil; FY+@fy
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/** K TE*Du
* @author treeroot DuQ:82 3b
* @since 2006-2-2 X0$?$ta
* @version 1.0 $'a]lR
*/ +}-cvM/*
public class BubbleSort implements SortUtil.Sort{ LzB*d
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/* (non-Javadoc) RD:LNl<0sh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = j
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*/ '@QK<!%,
public void sort(int[] data) { ]<fZW"W<q
int temp; }4Gn$'e
for(int i=0;i for(int j=data.length-1;j>i;j--){ R3BK\kf&
if(data[j] SortUtil.swap(data,j,j-1); 1_n5:
} Z3Xgi~c
} N71^ I"@HH
} ZU9Rvtb KB
} 8Tc:TaL
FQMA0"(G$
} lcoJ1+`C
W;,RU8\f
选择排序: w;Pe_m7\EO
<(~geN
package org.rut.util.algorithm.support; bXHtw}n
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import org.rut.util.algorithm.SortUtil; 1<M~#
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/** z7*mT}Q
* @author treeroot P\
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* @since 2006-2-2 f5nAD
* @version 1.0 &v r0{]V^
*/ rN {5^+w
public class SelectionSort implements SortUtil.Sort { I]d?F:cdX
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/* 34vH+,!u
* (non-Javadoc) -r{]9v2j
* yv5c0G.D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {JcMJZ3
*/ 2|+4xqNJm
public void sort(int[] data) { kr]_?B(r
int temp; 4-xg+*()
for (int i = 0; i < data.length; i++) { n]wZ7z
int lowIndex = i; .-p?skm=a
for (int j = data.length - 1; j > i; j--) { j 2Jew
if (data[j] < data[lowIndex]) { ^F/H?V/PX
lowIndex = j; ]G=^7O]`C!
} Fz_8m4
} sJLJVSv8c
SortUtil.swap(data,i,lowIndex); Qhn>aeW,
} MXY!N/
} gf|&u4D
3],[6%w
} 2FTJxSC
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Shell排序: )$FwB6^
rAQ3x0
package org.rut.util.algorithm.support; ^eqq|(<K
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import org.rut.util.algorithm.SortUtil; fAeq(tI=
mz .uK2l{
/** t*!Q9GC_
* @author treeroot bd.t|A
* @since 2006-2-2 , @6_sl
* @version 1.0 !iGZo2LV
*/ 8~h.i1L
public class ShellSort implements SortUtil.Sort{ ?u M2|Nk
mv9@Az9
/* (non-Javadoc) q VJC O-K|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^G(+sb[t
*/ 2ISnWzq;
public void sort(int[] data) { locf6%2g~
for(int i=data.length/2;i>2;i/=2){ e%&/K7I "?
for(int j=0;j insertSort(data,j,i); qznd'^[
} QPwUW
} l,M?
insertSort(data,0,1); kR(hUc1O
} EWoGdH|
KZTT2KsYl
/** SNf*2~uq)
* @param data lA7\c#
* @param j \RyW#[(
* @param i QW}N,j$
*/ Ps7Bt(/
private void insertSort(int[] data, int start, int inc) { t{ScK%S6
int temp; ]1n
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mE_?E&T`|
} rM(2RI4O`0
} S4(lC%$|
} d+Jj4OnP
/=ro$@
} \*$''`b)j
q:ZF6o`Z83
快速排序: m]:|j[!*M
th(<S
package org.rut.util.algorithm.support; WMd5Y`y
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import org.rut.util.algorithm.SortUtil; |Orp:e!
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/** 41jx+
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* @author treeroot 8;]U:tv
* @since 2006-2-2 p_2-(n@
* @version 1.0 3)+}2
*/ (y!<^Q
public class QuickSort implements SortUtil.Sort{ F2RU7o'f.
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/* (non-Javadoc) Aaq!i*y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x0_$,Tz@
*/ }*I:0"WH
public void sort(int[] data) { 0 lsX~d'W
quickSort(data,0,data.length-1); rXlJW]i
} WfE,U=e*
private void quickSort(int[] data,int i,int j){ I='S).
int pivotIndex=(i+j)/2; |/-H:\5
file://swap n$}Cj}eju
SortUtil.swap(data,pivotIndex,j); Wr Nm:N
+\n8##oAI
int k=partition(data,i-1,j,data[j]); d' Z
SortUtil.swap(data,k,j); H$i4OQ2
if((k-i)>1) quickSort(data,i,k-1); ?4,e?S6,[
if((j-k)>1) quickSort(data,k+1,j); ZkZTCb`/l
48 `k"Uy
} 6{p]cr
/** B'Ll\<mq@
* @param data +
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* @param i }?jL;CCe
* @param j @NS=
* @return kG>d^K
*/ ^ LTKX`p
private int partition(int[] data, int l, int r,int pivot) { O_jf)N\pi
do{ Lx:O Dd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4 u!)QG
SortUtil.swap(data,l,r); hWujio/h
} h{&}p-X&[
while(l SortUtil.swap(data,l,r); qZ6Mk9@M
return l; MjW g
} xi2!__
hI{M?LQd
} i?&g;_n^
H#luG_)
改进后的快速排序: +84JvOkWi
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package org.rut.util.algorithm.support; s<t*g]0`/
P=%'2BQ{{
import org.rut.util.algorithm.SortUtil; b+.P4+
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^
/** ~;A36M-[.
* @author treeroot vf+GC*f
* @since 2006-2-2 2}P?N
* @version 1.0 L`Lro:E?kL
*/ E6
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public class ImprovedQuickSort implements SortUtil.Sort { 1\_S1ZS
t_PAXj
private static int MAX_STACK_SIZE=4096; D`2c61jyc
private static int THRESHOLD=10; |Y6+Y{|\
/* (non-Javadoc) * 0GR
}k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2/K38t'-
*/ W9ZfD~(3-
public void sort(int[] data) { oyS43/."
int[] stack=new int[MAX_STACK_SIZE]; G/:;Qig
:eIu<_,}
int top=-1; %\5d?;
int pivot; {uQp$`
int pivotIndex,l,r; i,DnXgmz@
k<098F
stack[++top]=0; }&Gt&Hm>K
stack[++top]=data.length-1; SW
^F
G G]4g)O5
while(top>0){ k/&~8l.$
int j=stack[top--]; 0T{Z'3^=
int i=stack[top--]; Vnu*+
#3l&N4/
pivotIndex=(i+j)/2; j~d<n_
pivot=data[pivotIndex]; jU~
!*]
y3 vDKZ
SortUtil.swap(data,pivotIndex,j); +O 2H":$
9#CE m &c
file://partition t7"vAjZU
l=i-1; Uk=-A
@q
r=j; f,'gQ5\ X3
do{ brk>oM;t
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dVh* a
SortUtil.swap(data,l,r); N<lO!x1[H*
} ^a6c/2K
while(l SortUtil.swap(data,l,r); '$@bTW
SortUtil.swap(data,l,j); #Ont1>T,G
bnb:4?d]
if((l-i)>THRESHOLD){ DdY89R 6
stack[++top]=i; /~?'zr
stack[++top]=l-1; C 'YL9r-G
} U8+5{,$\.
if((j-l)>THRESHOLD){ {G:dhi
stack[++top]=l+1; lLq:(zMH
stack[++top]=j; o&
g01t
} L1FTh
Cy'0O>v5
} 3]=j!_yJf
file://new InsertSort().sort(data); \^$g%a
insertSort(data); Fc{X$hh<
} vN`2KCl~3
/** .Du-~N4\
* @param data T2Q`Ax7
*/
}pOem}
private void insertSort(int[] data) { 1'O++j_%y
int temp; T)ZO+}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \OV><|Lkh
} sYQ=nL
} vhA4ol
} 0}a="`p#<
>h?!6L- d
} S${n:e0\
n&? --9r
归并排序: D<-MbK^S
j06q3N"
package org.rut.util.algorithm.support; R!mFMw"
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import org.rut.util.algorithm.SortUtil; VI{!ZD]
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/** k
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* @author treeroot Sn(e@|!G
* @since 2006-2-2 ^Jv$Wx
* @version 1.0 >5rb4
*/ oCw>b]S
public class MergeSort implements SortUtil.Sort{ I{e[Y_
=Oo=&vA.oc
/* (non-Javadoc) 6Qo
YX] .
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q{s9{
*/ fwe4f
public void sort(int[] data) { >l<`)4*H
int[] temp=new int[data.length]; 7r F )fKW
mergeSort(data,temp,0,data.length-1); ID/=YG@
} (#uz_/xXa
#le1
^
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private void mergeSort(int[] data,int[] temp,int l,int r){ LHQ$0LVt>T
int mid=(l+r)/2; !'y9/
if(l==r) return ; U3R;'80 f
mergeSort(data,temp,l,mid); M0+xl+c+
mergeSort(data,temp,mid+1,r); `x{*P.]N!<
for(int i=l;i<=r;i++){ |ia#Elavo
temp=data; ]LcCom:]
} wZ&l6J4L
int i1=l; WOw( -
int i2=mid+1; )Z.v fc
for(int cur=l;cur<=r;cur++){ 3sh}(
if(i1==mid+1) 2P`Z>_
data[cur]=temp[i2++]; :5YL!D/&
else if(i2>r) DZ-2Z@{PX
data[cur]=temp[i1++]; C;mcb$@
else if(temp[i1] data[cur]=temp[i1++]; Pv- i.
else t)!(s,;T
data[cur]=temp[i2++]; ,;&j*qFi
} %T~3xQ
} MBeubS
[&Yrnkgr
} IE^xk@
'AU:[eyUV
改进后的归并排序: %5?Zjp+9
"s$$M\)T
package org.rut.util.algorithm.support; thT2U8%T
8h,>f#)0c
import org.rut.util.algorithm.SortUtil; DW@|H
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/** &xAwk-{W
* @author treeroot T[M:%vjYF
* @since 2006-2-2 LqZsH0C
* @version 1.0 yYdow.b!
*/ n<GTc{>Z
public class ImprovedMergeSort implements SortUtil.Sort { kH.e"e
d[0R#2y=
private static final int THRESHOLD = 10; i[IOR0
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/* *Y:;fl +v
* (non-Javadoc) -o+<m4he
* jDWmI%Y.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {IB}g:
*/ zs=[C+Z\
public void sort(int[] data) { [>IV#6 $
int[] temp=new int[data.length]; !R`E+G@
mergeSort(data,temp,0,data.length-1); 8M<\?JD~_f
} jTeHI|b
[3@Pu.-I+M
private void mergeSort(int[] data, int[] temp, int l, int r) { eYpK!9
int i, j, k; Z,jR:_p
int mid = (l + r) / 2; efT@A}sV
if (l == r) _~QiQDq
return; 8q}955Nl
if ((mid - l) >= THRESHOLD) vtA%^~0
mergeSort(data, temp, l, mid); =._V$:a6o
else ~W>3EJghR,
insertSort(data, l, mid - l + 1); v,[E*qMN
if ((r - mid) > THRESHOLD) sB~ |V
<
mergeSort(data, temp, mid + 1, r); P]~apMi:
else `X8wnD
insertSort(data, mid + 1, r - mid); /WxCsQn
QC,LHt?6
for (i = l; i <= mid; i++) { _HAtTW
temp = data; z^FJ
} rGn6S&-
for (j = 1; j <= r - mid; j++) { *^+]`S
temp[r - j + 1] = data[j + mid]; 2FE13{+f
} oAxRI+&|.
int a = temp[l]; : Yb_
int b = temp[r]; N 4!18{/2
for (i = l, j = r, k = l; k <= r; k++) { Ib&]1ger#=
if (a < b) { +$;#bw)yH
data[k] = temp[i++]; ]4X08Cm^
a = temp; 5qL;@Y
} else { O{<uW-
data[k] = temp[j--]; ~VKuRli|m
b = temp[j]; Ux!q(9<_
} <Od5}
} -T8'|"g
} Ai*+LSG
e#<A\?
/** =j!nt8]8
* @param data kZK1{
* @param l d1>L&3HKx
* @param i }v`Z.?|Z
*/ dsG:DS`q
private void insertSort(int[] data, int start, int len) { \uyZl2=WWa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Swxur+hfH
} S] R.:T_%
}
(RBB0CE
} 9zD,z+
} "+Kp8n6
)~{8C:
堆排序: Qm)c!
'h#>@v> }
package org.rut.util.algorithm.support; ~(-df>
E G J/r
import org.rut.util.algorithm.SortUtil; ;8Ts
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/** &`2$,zX#
* @author treeroot c9ea%7o{0a
* @since 2006-2-2 Vif)e4{Pn
* @version 1.0 ~93#L_V_O
*/ I~&*8)xM
public class HeapSort implements SortUtil.Sort{ C,) e7
e8U6D+jY
/* (non-Javadoc) zxrbEE Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T( CTU/a-,
*/ Z^t{m!v
public void sort(int[] data) { >f:OU,"
MaxHeap h=new MaxHeap(); 'EO"0,
h.init(data); o<L=l Q
for(int i=0;i h.remove(); 2rrC y C
System.arraycopy(h.queue,1,data,0,data.length); 3Lm7{s?=Z-
} u
a_(wBipy
*@fVog r^
private static class MaxHeap{ a\xf\$Ym
DoFF<LXBt
void init(int[] data){ W0LJXp-v
this.queue=new int[data.length+1]; |5(un/-C
for(int i=0;i queue[++size]=data; bmw"-W^U[
fixUp(size); Ih%LKFT
} ,H@ x.
} |6w{%xC?"
}_h2:^n
private int size=0; "
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3z!^UA>q
private int[] queue; Gf<%bQE
y:VY8a 4
public int get() { e[g.&*!
return queue[1]; 7xfN}iHG
} n7,LfO#
wT&P].5n
public void remove() { v4W<_
7L_
SortUtil.swap(queue,1,size--); &&TAX
fixDown(1); xeKfc}:&z
} g)=-%n'RoE
file://fixdown Df}3^J~JX
private void fixDown(int k) { "[2D&\$
int j; a!mdL|eA@
while ((j = k << 1) <= size) { c#T0n !}
if (j < size %26amp;%26amp; queue[j] j++; x-HR [{C
if (queue[k]>queue[j]) file://不用交换 %!V =noo
break; jWGX:XB
SortUtil.swap(queue,j,k); o(Q='kK
k = j; U>a~V"5,u
} $j'8Z^
} BF(Kaf;<t.
private void fixUp(int k) { PaBqv]
while (k > 1) { fK5iOj'Q
int j = k >> 1; @iaz_;
if (queue[j]>queue[k]) ke5_lr(
break; WbHI>tt
SortUtil.swap(queue,j,k); 4FcY NJq
k = j; Wq/0 }W.
} ($s%B
} r95$( N
? W2Wy\
} r&O:Bt}x
csms8J
} 3.?B')
E>N L/[1d
SortUtil: v$EgVcK
j?s+#t
package org.rut.util.algorithm; c3|/8
cQ`+ A|q
import org.rut.util.algorithm.support.BubbleSort; ez^b{s`
import org.rut.util.algorithm.support.HeapSort; ziG]BZ
import org.rut.util.algorithm.support.ImprovedMergeSort; 'Q4V(.
import org.rut.util.algorithm.support.ImprovedQuickSort; Y[`%j\=
import org.rut.util.algorithm.support.InsertSort; m^Rf6O^
import org.rut.util.algorithm.support.MergeSort; m95;NT1N/g
import org.rut.util.algorithm.support.QuickSort; y3NMt6
import org.rut.util.algorithm.support.SelectionSort; W=?s-*F[~
import org.rut.util.algorithm.support.ShellSort; <UBB&}R0
1/vcj~|)t
/** e(EXQP2P>
* @author treeroot Jk=d5B
* @since 2006-2-2 nISfRXU;
* @version 1.0 H^0`YQJ3
*/ FW!1 0K?
public class SortUtil { ARa9Ia{@
public final static int INSERT = 1; YhJ*(oWL
public final static int BUBBLE = 2; hxj[gE'R(
public final static int SELECTION = 3; P:tl)ob
public final static int SHELL = 4; bPo*L~xdk
public final static int QUICK = 5; UZ3oc[#D=]
public final static int IMPROVED_QUICK = 6; a?ii)GGq
public final static int MERGE = 7; w@ \quy:
public final static int IMPROVED_MERGE = 8; 7|$
H}$
public final static int HEAP = 9; x\!Uk!fM
7s'r3}B`
public static void sort(int[] data) { uY*|bD`6&
sort(data, IMPROVED_QUICK); cT,5xp"a
} '3V?M;3|K
private static String[] name={ bhc
.UmH
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]2'{W]m
}; r d4\N2- 6
2Uq4PCx!
private static Sort[] impl=new Sort[]{ U{~R39
new InsertSort(), _+x&[^gjP
new BubbleSort(), o9D]\PdL>
new SelectionSort(), 'CC;=@J
new ShellSort(), nLv"ON~
new QuickSort(), yct^AN|%
new ImprovedQuickSort(), /Jw65 e
new MergeSort(), 4e 55
new ImprovedMergeSort(), H:&|q+K=#
new HeapSort() OBJk\j+Wi
}; K/+w6d
%b(non*
public static String toString(int algorithm){ Dt p\T|)
return name[algorithm-1]; ]>\!} \R<
} tr$~INe
I%fz^:[#<
public static void sort(int[] data, int algorithm) { y:N>t+'5
impl[algorithm-1].sort(data); ^9PB+mz
} 3-Xc3A=w
C!r9+z)<
public static interface Sort { 6Jf\}^4@k
public void sort(int[] data); _&
qM^
} {=GWQn6cc
<!M ab}
public static void swap(int[] data, int i, int j) { %T:7I[f
int temp = data; }v?_.MtS
data = data[j]; G~;hD-D~.
data[j] = temp; L?gak@E
} *K1GX
} zIjUfgO/M