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'/(y
插入排序: !zvKl;yT
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package org.rut.util.algorithm.support; r3hjGcpaX
c_O|?1
import org.rut.util.algorithm.SortUtil; ;yY>SaQ
/** 3A4?9>g)KU
* @author treeroot #; E,>0
* @since 2006-2-2 o9#
* @version 1.0 -&M9Yg|Se
*/ nmc=RK^cM
public class InsertSort implements SortUtil.Sort{ <'-}6f3
G#)>D$Ck#
/* (non-Javadoc) 4Me*QYD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5IBe;o
*/ E0>4Q\n{
public void sort(int[] data) { /t%IU
int temp; TWEmW&Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <QugV3e
} !a~>;+
} MT$OjH'Q`
} ^]Lr_k
eq"a)QB3m
} a>.2Q<1
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冒泡排序: w%VHq z$
4B<D.i ;}
package org.rut.util.algorithm.support; @&S4j]rq
r=s,Ath
import org.rut.util.algorithm.SortUtil; *r?g&Vw$m
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/** TPq5"mco
* @author treeroot b3H~a2"d
* @since 2006-2-2 NV9D;g$Y
* @version 1.0 m!|u{<,R
*/ -mO[;lO
public class BubbleSort implements SortUtil.Sort{ iwJBhu0@#
\QBODJ1
/* (non-Javadoc) 6BFtY+.y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mm:6+
*/ .O3i"X]
public void sort(int[] data) { pYI`5B4
int temp; g>_6O[;t%
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0LrTYrlj
if(data[j] SortUtil.swap(data,j,j-1); "|]'\4UdzQ
} (JocnM|U
} VDx=Tsu-
} nDkyo>t.
} %QVX1\>]
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] <L
} O:+#k-?
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选择排序: KU"?ZI
y!1%Kqx1,n
package org.rut.util.algorithm.support; l-XiQ#-{
{uL<$;#i
import org.rut.util.algorithm.SortUtil; :7e2O!zH_
;B^G<
/** 7cK#fh"hvg
* @author treeroot {Rc/Ten
* @since 2006-2-2 &%>l9~F'~
* @version 1.0 37v!:xF!
*/ gJ+MoAM"
public class SelectionSort implements SortUtil.Sort { p=coOWOQ
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/* & *B@qQ
* (non-Javadoc) f:B+R
* .*r?zDV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7F>5<Gv:-
*/
PnFU{N
public void sort(int[] data) { xA`Q4"[I
int temp; (NFq/w%
for (int i = 0; i < data.length; i++) { pez[qs
int lowIndex = i; 6U @3
xU`
for (int j = data.length - 1; j > i; j--) { %?<C
?.
if (data[j] < data[lowIndex]) { <[Q#}/$"
lowIndex = j; (VO)
Q
} r'7;:
} x9a*^l
SortUtil.swap(data,i,lowIndex); %Fa/82:- "
} t*.O >$[
} .YYiUA-i9n
XK`>#*"V
} yXh=~:1~
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Shell排序: 5H6m{ng
fv5'Bl
package org.rut.util.algorithm.support; w+=>b
;'`T
import org.rut.util.algorithm.SortUtil; [`Ol&R4k
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/** !?DPI)
* @author treeroot 4+:Q"
* @since 2006-2-2 I')URk[
* @version 1.0 2Y(Phw2%
*/ _ ;O$ot\5
public class ShellSort implements SortUtil.Sort{ /j0<x^m/
7Wmk"gp
/* (non-Javadoc) A@Z&ZBDg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y5kqnibh@
*/ 3=o3VGZP
public void sort(int[] data) { U)=StpTT
for(int i=data.length/2;i>2;i/=2){ B0?E$8a
for(int j=0;j insertSort(data,j,i); "6['!rq0
} _'ltz!~
} H~i+:X=I
insertSort(data,0,1); 8v8?D8\=|
} uH^/\
.</d$FM JE
/** R61.!ql%w
* @param data ctTg-J2.
* @param j V()s!w
* @param i 0vbn!<:
*/ SZpBbX$
private void insertSort(int[] data, int start, int inc) { Pz,kSxe=
int temp; =<YG0K
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o|>2X[T
} 94=Wy-
} f>s3Q\+
} !e?=I
*TfXMN?w
} 5n"b$hMF
$iUK,
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快速排序: e4b`C>>
|_&vW\
package org.rut.util.algorithm.support; +XLy Pj
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import org.rut.util.algorithm.SortUtil; ` {c %d
jmxjiJKP
/** btkD<1{g
* @author treeroot E
y1mlW
* @since 2006-2-2 = 7d{lK
* @version 1.0 "a6[FqTs
*/ !X$e;V"HX
public class QuickSort implements SortUtil.Sort{ J(ZYoJ
]OL
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/* (non-Javadoc) 7<*sP%6bD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s$4!?b$tw
*/ )[|TxXz
d
public void sort(int[] data) { kl4FVZof
quickSort(data,0,data.length-1); ( n;# Z,
} jAB~XaT ,
private void quickSort(int[] data,int i,int j){ o9(:m
int pivotIndex=(i+j)/2; Wz)s#
file://swap _Jx.?8
SortUtil.swap(data,pivotIndex,j); T?4MFx#
bX6eNk-L
int k=partition(data,i-1,j,data[j]); 2 DJs'"8
SortUtil.swap(data,k,j); 1Jg&L~Ws"
if((k-i)>1) quickSort(data,i,k-1); y2;uG2IS_g
if((j-k)>1) quickSort(data,k+1,j); yDg`9q.ckm
`wj<d>m
} KC9_H>
/** 2a'b}<|[(
* @param data 5Mf bO3
* @param i 5,cq-`
* @param j J.W0F# ?
* @return X,y0J
*/ cK%Sty'8+
private int partition(int[] data, int l, int r,int pivot) { .|^L\L(!
do{ i2j_=X-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m^Qc9s#D
SortUtil.swap(data,l,r); \2KwF}[m
} &\#If:
while(l SortUtil.swap(data,l,r); I(y:Td
return l; ShbW[*5
} V]dzKNFi
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} ?9'Ukw`
g
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改进后的快速排序: =Y
Je\745
L}5nq@Uu)
package org.rut.util.algorithm.support; .xo#rt9_"=
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import org.rut.util.algorithm.SortUtil; !LB#K?I
;)].Dj9
/** OPOL-2<wiy
* @author treeroot bHZXMUewC
* @since 2006-2-2 HJWk%t<
* @version 1.0 .Y|5i^i9{
*/ m<qPj"g~L
public class ImprovedQuickSort implements SortUtil.Sort { {_T?0L
C ioM!D
private static int MAX_STACK_SIZE=4096; 6..G/,TB
private static int THRESHOLD=10; :ZX#w`Y
/* (non-Javadoc) gg
$/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,'w9@A
*/ 7%DA0.g
public void sort(int[] data) { "I+71Ce
int[] stack=new int[MAX_STACK_SIZE]; 8WU_d`DF
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int top=-1; D32~>J.F
int pivot; '*gY45yT`
int pivotIndex,l,r; :Rl*64}
zt,pV\|
stack[++top]=0; Af y\:&j
stack[++top]=data.length-1; 3H"bivK
vdA3
while(top>0){ 7bJAOJ'_
int j=stack[top--]; xh|NmZg
int i=stack[top--]; v3>jXf
$0+n0*fp
pivotIndex=(i+j)/2; 1?+%*uoPX
pivot=data[pivotIndex]; #fdQ\)#q>
T6_LiB@
SortUtil.swap(data,pivotIndex,j); _UU-
DvL/xlN
file://partition mz)Z
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l=i-1; 9?W!E_
r=j; /WqiGkHV*
do{ LWwWxerZ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X|]&K
SortUtil.swap(data,l,r); {Aq2}sRl{
} ))Q3;mI"
while(l SortUtil.swap(data,l,r); VaKBS/y"
SortUtil.swap(data,l,j); ~Psv[b=]
uRIa
Nwohv
if((l-i)>THRESHOLD){ !<'0
GOl
stack[++top]=i; Qn0 1ig
stack[++top]=l-1; (rF XzCI
} `wrN$&
if((j-l)>THRESHOLD){ +2Xq+P
stack[++top]=l+1; wP-BaB$_
stack[++top]=j; !.\- l2f
} ]H[%PQ r`Z
:x*#RnRr.
} U42B(ow
file://new InsertSort().sort(data); ?
}t[
insertSort(data); {Ee[rAVGp
} lJ y\Ky(*
/** A\xvzs.d
* @param data 8<#S:O4kA
*/ oY;=$8y<q
private void insertSort(int[] data) { ?-.Qv1hs6p
int temp; jbrx)9Z+%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); slPLc
} t^ax:6;"|
}
a@mMa {
} %v)m&VUi%
$K-od3h4=
} r*I u6
@xu/&pbI
归并排序: 4\Nt"#U)g
h4N%(?7
package org.rut.util.algorithm.support; dJ/(u&N
zI$24L9*
import org.rut.util.algorithm.SortUtil; &n 1 \^:
hlIh(\JZ4s
/** ~:PuKx
* @author treeroot )wFr%wNe
* @since 2006-2-2 :>G3N+A)
* @version 1.0 s01W_P .@R
*/ T~Z7kc'
public class MergeSort implements SortUtil.Sort{ P%%[_6<%M
6B pm+}
/* (non-Javadoc) >n!,KUu]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sD_"
*/ OsSGVk #Qh
public void sort(int[] data) { 4I %/}+Q
int[] temp=new int[data.length]; I[td:9+hK@
mergeSort(data,temp,0,data.length-1); 335\0~;3
} ]Sl]G6#Iwv
*Y!c6eA
private void mergeSort(int[] data,int[] temp,int l,int r){ 9bE/7v
int mid=(l+r)/2; }iu(-{Z
if(l==r) return ; 'OERW|BO
mergeSort(data,temp,l,mid); Z3jtq-y
mergeSort(data,temp,mid+1,r); ueimTX k
for(int i=l;i<=r;i++){ aC9PlKI
temp=data; S zqY@
} PNn-@=%
int i1=l; 4R8W ot
int i2=mid+1; B^{87YR
for(int cur=l;cur<=r;cur++){ +0)zB;~7
if(i1==mid+1) w
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data[cur]=temp[i2++]; R3`Rrj Z
else if(i2>r) `% a+LU2
data[cur]=temp[i1++]; \Gzo^w
else if(temp[i1] data[cur]=temp[i1++]; Gb?O-z%8*
else ww0m1FzX
data[cur]=temp[i2++]; ^Ko{#qbl/
} >mWu+Nn:
} BAUo`el5
(l~3~n
} ;:0gN|+
@['4 X1pqt
改进后的归并排序: q/|WkV `m
.*0`}H+_
package org.rut.util.algorithm.support; XyM?Dc5,
+ISXyGu
import org.rut.util.algorithm.SortUtil; C/sDyv$
^KK9T5H
/** 8N58w)%7`
* @author treeroot HDTdOG)
* @since 2006-2-2 g;M\4o
* @version 1.0 *`(/wE2v]
*/ =z]8;<=pL
public class ImprovedMergeSort implements SortUtil.Sort { JW`Kh*,~<
4
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private static final int THRESHOLD = 10; ]0g%)f uMf
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/* [;]@PKW?w
* (non-Javadoc) JN{xh0*
* '
YONRha
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tFYIKiq2
*/ N]p|c3D
public void sort(int[] data) { <;?&<qMo,P
int[] temp=new int[data.length]; aD5G0d?u
mergeSort(data,temp,0,data.length-1); N%2UL&w#B
} Ya_4[vR<
[xVE0l*\
private void mergeSort(int[] data, int[] temp, int l, int r) { ;7F|g
int i, j, k; H$
sNp\[{
int mid = (l + r) / 2; !iOuIYjV
if (l == r) ]:Q7Gys
return; d\cwUXf
J
if ((mid - l) >= THRESHOLD) ,0~/ Cn
mergeSort(data, temp, l, mid); fGv`.T _d
else ItoSORVV
insertSort(data, l, mid - l + 1); HxVQeyOR
if ((r - mid) > THRESHOLD) })l+-H"
mergeSort(data, temp, mid + 1, r); yk5T"#'+
else }UzO_&Z#6
insertSort(data, mid + 1, r - mid); <IF\;,.c
jZ'y_
for (i = l; i <= mid; i++) { <N{pMz
temp = data; iZ`1Dzxgk
} zn |=Q$81
for (j = 1; j <= r - mid; j++) { C+WHg-l
temp[r - j + 1] = data[j + mid]; ; md{T'
} 9u 'hCi(
int a = temp[l]; IXSCYqoK
int b = temp[r]; GMw|@?:{
for (i = l, j = r, k = l; k <= r; k++) { S*H :/Ip
if (a < b) { bW`@9 =E
data[k] = temp[i++]; [xXml On!
a = temp; \w
6%J77
} else { !(!BW9Zt+
data[k] = temp[j--]; 6]|NB &
b = temp[j]; V.IgEE]
} ,x+_/kqx
} ax0:v!,e
} |U_48
S|A?z)I
/** %@!Vx
* @param data HY]vaA`
* @param l 5k`[a93T
* @param i F_SkS?dB
*/ tVhY=X{N?
private void insertSort(int[] data, int start, int len) { OpwZTy}1}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t[6 g9 e$
} ;+-$=l3[a
} ]|q\^k)JU
} 6'Sc=;;:
} Po[u6K2&
tUmI#.v
堆排序: b8J\Lm|J
`>fN?He
package org.rut.util.algorithm.support; JlsRP
kWfNgu$xK
import org.rut.util.algorithm.SortUtil; t|*PC
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/** @j$tpz
* @author treeroot S,5>g07-`
* @since 2006-2-2 ^uW!=%D
* @version 1.0 qYFol#=%
*/ GLb}_-|
public class HeapSort implements SortUtil.Sort{ ;G.m;5A
g<s[6yA
/* (non-Javadoc) y(:hN)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sBIqee'T
*/ 0EM`,?i .Q
public void sort(int[] data) { <69/ZI),Y{
MaxHeap h=new MaxHeap(); /KEPPp
h.init(data); Tk-PCra
for(int i=0;i h.remove(); ?lb1K'(
System.arraycopy(h.queue,1,data,0,data.length); Gvt.m&_
} *seKph+'c
KQ/v](77
private static class MaxHeap{ *DX6m
Y*``C):K%
void init(int[] data){ wLD/#Hfi7
this.queue=new int[data.length+1]; [;VNuF
for(int i=0;i queue[++size]=data; (j u-r*0
fixUp(size); RR:m<9l
} [pbX_
} T\:3(+uK
=&,zWNz)
private int size=0; =~Jv*c
zQ
{g~x
private int[] queue; GI$t8{M
',0~ \V
public int get() { ;T6^cS{ Gj
return queue[1]; v,RLN`CID
} 2 c'=^0:
@yaBtZUp3
public void remove() { +[r%y,k
SortUtil.swap(queue,1,size--); tGzYO/Zp
fixDown(1); d{0w4_x
} %H-[u}s
file://fixdown *|Re,cY
private void fixDown(int k) { UhY
)rezh
int j; 2 <&-
while ((j = k << 1) <= size) { q4 'x'8
if (j < size %26amp;%26amp; queue[j] j++; |Xd[%W)
if (queue[k]>queue[j]) file://不用交换 z$-/yT"M
break; ,I=ClmR
SortUtil.swap(queue,j,k); $X9Ban]
k = j; (k
M\R|
} Xr M[8a
} KLqu[{y.'
private void fixUp(int k) { ;sNyN#
while (k > 1) { _dsd{&
int j = k >> 1; @V]
Wm1g
if (queue[j]>queue[k]) +M@G 8l
break; m[oe$yH
SortUtil.swap(queue,j,k); _89
_*t(
k = j;
$7)O&T*q'
} ER5Q` H
} S
M98 7Y!B
VR_+/,~
} 7^KQQ([
6FSw_[ )
} .2
UUU\/5
2k"a%#H8
SortUtil: /~7H<^}
:c)<B@NqNo
package org.rut.util.algorithm; 30>TxL=&
FEaf&'G]
import org.rut.util.algorithm.support.BubbleSort; <4{@g]0RV
import org.rut.util.algorithm.support.HeapSort; '[Oi_gE.
import org.rut.util.algorithm.support.ImprovedMergeSort; AXPUJ?V
import org.rut.util.algorithm.support.ImprovedQuickSort; qvYYKu
import org.rut.util.algorithm.support.InsertSort; 7L;yN..0
import org.rut.util.algorithm.support.MergeSort; ~uC4>+dk
import org.rut.util.algorithm.support.QuickSort; /l+x&xYD
import org.rut.util.algorithm.support.SelectionSort; j\dkv_L
import org.rut.util.algorithm.support.ShellSort; M|d[iaM,
8)"KPr63M
/** Y hLtf(r
* @author treeroot 6{lWUr
* @since 2006-2-2 gSR&CnqZ<
* @version 1.0 dhK$XG
*/ pJa FPO..|
public class SortUtil { &%qD Som3
public final static int INSERT = 1; )r?i^D&4
public final static int BUBBLE = 2; \U !<-
public final static int SELECTION = 3; 4N$svA
public final static int SHELL = 4; .[2MPjg
public final static int QUICK = 5; f[.hN
public final static int IMPROVED_QUICK = 6; W]2;5`MM
public final static int MERGE = 7; a' #-%!]
public final static int IMPROVED_MERGE = 8; Q(]-\L'
public final static int HEAP = 9; &1Cq+YpI
d'[aOH4}
public static void sort(int[] data) { 0E\R\KO$>
sort(data, IMPROVED_QUICK); D<++6HN
} f!LZT! y
private static String[] name={ crgYr$@s?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [b#jw,7
};
b1[U9
5)$U<^uy
private static Sort[] impl=new Sort[]{ /=e[(5X|O
new InsertSort(), {]D!@87
new BubbleSort(), ziH2<@
new SelectionSort(), k}lx!Ck
new ShellSort(), Z7.)[
;
new QuickSort(), R@VO3zs W
new ImprovedQuickSort(), 8!UZ..
new MergeSort(), z%Z}vWn
new ImprovedMergeSort(), &g& &-=7)
new HeapSort() =l7LEkR
}; sM5 w~R>Y
^G2vA8%
public static String toString(int algorithm){ 3lL:vD5(
return name[algorithm-1]; M0]l!x#7
} "BFW&<1
'|XP}V0I
public static void sort(int[] data, int algorithm) { e/Q[%y.X
impl[algorithm-1].sort(data); Uw&+zJ
} <q[*kr
'E&K%/d
public static interface Sort { ~:t2@z4p
public void sort(int[] data); p\-.DRwT`
} oC7#6W:@w
_ZS<zQ'
public static void swap(int[] data, int i, int j) { t9`NCng
5
int temp = data; }SN'*w@E
data = data[j]; 1MahFeQ[
data[j] = temp; 0x`:jz`
} \3LD^[qi
} qyJpm{