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。 sfLH[Q?
插入排序: tG1,AkyZ
Vn:BasS%
package org.rut.util.algorithm.support; NI(fJ%U
\_H-TbU8
import org.rut.util.algorithm.SortUtil; '3B\I#
/** H)#HK!F6f
* @author treeroot R4xoc;b
* @since 2006-2-2 ;=.i+
* @version 1.0 _FV<[x,nE8
*/ CHeU`!:
public class InsertSort implements SortUtil.Sort{ 3_%lN4sz
R~9\mi5^UH
/* (non-Javadoc) Y\CR*om!W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F_KPhe$
*/ Rg4'9I%B
public void sort(int[] data) { {Pi+VuLE
int temp; gu'Y k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CYIp 3D'k
} 41\r7
BS
} y^M~zOe
} l`#XB:#U
x2@Q5|a
} b{:c0z<
1h.Ypzu
冒泡排序: f-Yp`lnn.d
4';~@IBf
package org.rut.util.algorithm.support; G@4ro<
aD
33!
:y
import org.rut.util.algorithm.SortUtil; H
l'za
aSu6SU
/** z|';Y!kQ
* @author treeroot (eTe`
* @since 2006-2-2 yJ(BPSt
* @version 1.0 a}oFL%=?
*/ P!;%DI!<b
public class BubbleSort implements SortUtil.Sort{ u9 LP=g
*}yOL
[
/* (non-Javadoc) YMlnC7?_/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ C^fi}/]
*/ F*&A=@/3
public void sort(int[] data) { HM'P<<
int temp; /h)_Q;35S;
for(int i=0;i for(int j=data.length-1;j>i;j--){ }sbh|#
if(data[j] SortUtil.swap(data,j,j-1); tbx* }uy2
} (A\X+S(
} *2K/)(
} #>I*c_-
} (k{rn3,
<W,M?r+
} 8M{-RlR
{'.[N79xP
选择排序: =qQH,{]c6
xY3KKje
package org.rut.util.algorithm.support; i|- 6
]n8
5.DF
import org.rut.util.algorithm.SortUtil; xJ/<G$LNJ0
d0@&2hO
/** S4r-s;U-v/
* @author treeroot C'6yt
* @since 2006-2-2
>mk}
* @version 1.0 yuTSzl25,/
*/ 7Wd}H Z
public class SelectionSort implements SortUtil.Sort { 3Kv~lo^
~OuK ewr\
/* -r.Qy(}p
* (non-Javadoc) )<fa1Gz#^
* Ya%-/u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ("G
_{tVU
*/ C}i1)
public void sort(int[] data) { oWJ0>)
int temp; b7]MpL
for (int i = 0; i < data.length; i++) { GFq,Ca~
int lowIndex = i; f!|$!r*q
for (int j = data.length - 1; j > i; j--) { 8'niew
5d
if (data[j] < data[lowIndex]) { T#HW{3
lowIndex = j; %OI4}!z@l
} 2j9+ f{ l
} scXY~l]I*
SortUtil.swap(data,i,lowIndex); (%bqeI!ob
} <)D)j[
} E%B:6
OA_WjTwDs
} yvQRr75
12D>~#J
Shell排序: E46+B2_~zk
DdI
V~CxD
package org.rut.util.algorithm.support; Hp#IOsP~
)<<}8Fs
import org.rut.util.algorithm.SortUtil; D-v}@tS'
#i t)
/** )z:"P;b"Nl
* @author treeroot }K
rQPg
* @since 2006-2-2 &jbZL5
* @version 1.0 `$fKS24u
*/ ;,OZ8g)LH
public class ShellSort implements SortUtil.Sort{ []\=(Uc;
Vr|sRvz
/* (non-Javadoc) /=+y[y3`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E8`AU<
*/ R6xJw2;_
public void sort(int[] data) { ['`Vg=O.{
for(int i=data.length/2;i>2;i/=2){ jDyG~de
for(int j=0;j insertSort(data,j,i); km 0LLYG
} $,s"c(pv[,
} L/39<&W
insertSort(data,0,1); @xqjAcfg
} lD K<gd
(^U
8wit/
/** U?WS\Jji3!
* @param data kuQ+MQHs
* @param j ?'jRUf l
* @param i t>Ot)d
*/ EN\
uX!
private void insertSort(int[] data, int start, int inc) { GIs
*;ps7w
int temp; 1(nK |
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -9X#+-
} #_U[T
} [VL+X^
} u3VSS4RG%
usFhcU
} vgyv~Px]AW
Gc1!')g!
快速排序: +~Lt;xNFk
dyyGt}}5f
package org.rut.util.algorithm.support; $bho]~
~4}'R_
import org.rut.util.algorithm.SortUtil; IXJ6w:E
YU(|i}b
/** ej^pFo
* @author treeroot k%-S7iQ
* @since 2006-2-2 BT3X7Cx
* @version 1.0 0Xe?{!@a
*/ 61*inGRB
public class QuickSort implements SortUtil.Sort{ 920 o]Dh=t
=eB^(!M
/* (non-Javadoc) {] Zet}2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P&2/J%@zG
*/ RY\[[eG
public void sort(int[] data) { ;v=v4f'+
quickSort(data,0,data.length-1); {
d*?O
} qe@ctHpn
private void quickSort(int[] data,int i,int j){ !#' y#
int pivotIndex=(i+j)/2; Ug=)_~
file://swap "6}
#65
SortUtil.swap(data,pivotIndex,j); Rv^
\o
~a
RK=i$F
int k=partition(data,i-1,j,data[j]); @x4IxGlUs
SortUtil.swap(data,k,j); '4x uH3
if((k-i)>1) quickSort(data,i,k-1); &|j^?ro6
if((j-k)>1) quickSort(data,k+1,j); KgCQ4w9
UwQyAD]Ht
} 8`4Z%;1
/** Pm}
* @param data ]"DsZI-glW
* @param i ^|+;~3<J
* @param j O&(@Ka
* @return /#]4lFk:h
*/ 2uajK..b
private int partition(int[] data, int l, int r,int pivot) { zK@DQ5
do{ /"LcW"2;N
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aIsT"6A~{
SortUtil.swap(data,l,r); x,~ ys4
} 'nR'o /!
while(l SortUtil.swap(data,l,r); Bl6>y/
return l; {:!CA/0Jx
} r:QLO~l/
P!*G"^0<
} JF%_8Ye5
,f(:i^iz!
改进后的快速排序: j1Q"s(
g/v"E+
package org.rut.util.algorithm.support; c&rS7%
}wkZ\q[
import org.rut.util.algorithm.SortUtil; N)tqjq
#;WKuRv
/** iXJ3B&x
* @author treeroot @|hn@!YK
* @since 2006-2-2 /O$7A7Tl
* @version 1.0 $Z2Y% z6y
*/ HAtf/E]
public class ImprovedQuickSort implements SortUtil.Sort { zQNkjQ{mx
8U$(9X
private static int MAX_STACK_SIZE=4096;
`[=3_
private static int THRESHOLD=10; }+wvZq +c
/* (non-Javadoc) 0zCmU)ng
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /eI]!a
*/ 3{j&J-
public void sort(int[] data) { n( } zq
int[] stack=new int[MAX_STACK_SIZE]; E/6@>.T?'
l)^sE)
int top=-1; \F
}s"#
int pivot; \ O#6H5F
int pivotIndex,l,r; ~g_]Sskf7
i4XE26B;e
stack[++top]=0; p!wx10b
stack[++top]=data.length-1; d>f.p"B.gj
8FmRD
while(top>0){ P t)Ni
int j=stack[top--]; NGYUZ\m
int i=stack[top--]; 3r[}'ba\
!B#Lea
pivotIndex=(i+j)/2; 5jb/[i^V
pivot=data[pivotIndex]; *co=<g]4KY
AdWLab;
SortUtil.swap(data,pivotIndex,j); -x)zyq6
REe<k<>p~
file://partition zv%9?:
l=i-1; :4(.S<fH)-
r=j; vj?6,Ae
do{ TO|&}sDh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bn5O;I13
SortUtil.swap(data,l,r); !|1GraiS
} N!u(G
while(l SortUtil.swap(data,l,r); D@]*{WO
SortUtil.swap(data,l,j); X4D>
<A_L Zi
if((l-i)>THRESHOLD){ x<S?"
stack[++top]=i; _eE hIQ9
stack[++top]=l-1; .YT&V
} 8)1k>=
if((j-l)>THRESHOLD){ b/I_iJ8t
stack[++top]=l+1; ZMI!Sl
stack[++top]=j; '|9fDzW"]
} [ ;$(;
b&i0)/;
} ~`<(T)rs
file://new InsertSort().sort(data); ir-= @@
insertSort(data); **%/Ke[
} $jL{l8x
/** dCF!.
* @param data :ziV3jRM
*/ |Zn|?#F
private void insertSort(int[] data) { 8l, R|$RKP
int temp; D(m2^\O[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3V,$FS]
} \G!TC{6
} {NS6y \,
} {!$E\e^d
vp4l g1/
} ?_!} lg
|#6B<'e'
归并排序: 4t%g:9]vr
S:*.,zC
package org.rut.util.algorithm.support; k4:e0Wd
y" (-O%Pe
import org.rut.util.algorithm.SortUtil; /MErS< 6
)_|;h2I
/** E>bK-jG
* @author treeroot efK|)_i
:
* @since 2006-2-2 sbxOnwP\
* @version 1.0 *kliI]BF]
*/ e~NEyS~3
public class MergeSort implements SortUtil.Sort{ fG+/p 0sJ?
':}
/* (non-Javadoc) y)s+ /Teb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 f""@TTp
*/ 3rF=u:r7c
public void sort(int[] data) { s$V'|Pt
int[] temp=new int[data.length]; *?'^Rc
mergeSort(data,temp,0,data.length-1); d3$*z)12`
} W+F^(SC\
O%1X[
private void mergeSort(int[] data,int[] temp,int l,int r){ Znv3h
int mid=(l+r)/2; oj|\NlR
if(l==r) return ; 0gR!W3dh
mergeSort(data,temp,l,mid); Rh[%UNl
mergeSort(data,temp,mid+1,r); oi@hZniP?
for(int i=l;i<=r;i++){ J6WyFtlyLc
temp=data; Rl. YF+YH
} (}]ae*
int i1=l; -HE@wda
int i2=mid+1; W^es"\
for(int cur=l;cur<=r;cur++){ -3z$~
{
if(i1==mid+1) "sM
3NY
data[cur]=temp[i2++]; C
EzTErn
else if(i2>r) %^5|3l3y
data[cur]=temp[i1++]; NrHh(:
else if(temp[i1] data[cur]=temp[i1++]; &!kD81?Mm
else ]M:=\h,t>
data[cur]=temp[i2++]; p41TSALq
} ]r|nz~Aa$
} {^Y0kvnd
dx/NY1
} jjT|@\-u
qs["&\@
改进后的归并排序: >~nc7j
u
1x"S^j
package org.rut.util.algorithm.support; #QWG5
S)$)AN<O
import org.rut.util.algorithm.SortUtil; da'7*
&/
Xy0KZ !
/** \-Oq/g{j
* @author treeroot w9Eb\An
* @since 2006-2-2 5kRP
Sfh
* @version 1.0 82EH'C
*/ hC nqe
public class ImprovedMergeSort implements SortUtil.Sort { @TvoCDeI
mYE 8]4
private static final int THRESHOLD = 10; 2I8RO\zR
{J?#KHF'|
/* f|U
J%}$v;
* (non-Javadoc) B9Ha6kj
* ^GyGh{@,f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p^E}%0#
*/ %
T2C0P
public void sort(int[] data) { _#kjiJj*
int[] temp=new int[data.length]; n#NE.ap$&,
mergeSort(data,temp,0,data.length-1); ]]InD N
} hj8S".A_
>z,SN
private void mergeSort(int[] data, int[] temp, int l, int r) { F+lsza
int i, j, k; |?kZfr&9q
int mid = (l + r) / 2; FtEmSKD
if (l == r) 1]yjhw9g
return; A3!xYG=+
if ((mid - l) >= THRESHOLD) -UhSy>m
mergeSort(data, temp, l, mid); _:0)uR LS
else *<5zMSZO
insertSort(data, l, mid - l + 1); Me.t_)
if ((r - mid) > THRESHOLD) E&RiEhuv
mergeSort(data, temp, mid + 1, r); 1z#0CX}Y/H
else Zl:Z31
insertSort(data, mid + 1, r - mid); $PNS`@B
WX2w7O'R
for (i = l; i <= mid; i++) { nVK`H@5fw
temp = data; OE"r=is
} C4`u3S
for (j = 1; j <= r - mid; j++) { =s\RK
temp[r - j + 1] = data[j + mid]; knPo"GQW
} Hy_}e"
int a = temp[l]; c^$+=-G{fd
int b = temp[r]; DM73
Nn^5
for (i = l, j = r, k = l; k <= r; k++) { UP*\p79oO
if (a < b) { e@GR[0~
data[k] = temp[i++]; )]^xy&:|
a = temp; Za&.sg3RG
} else { hZudVBn
data[k] = temp[j--]; 4Y=sTXbFt
b = temp[j]; :Hn*|+'
} R>3a?.X
} 9qqzCMrI0e
} neHozmm|
HLPnbI-+
/** \Jcj4
* @param data s[ CnJZ\q
* @param l w'Cn3b)`
* @param i S!u`V3-s
*/ -d|VXD5N
private void insertSort(int[] data, int start, int len) { EK-Qa<[|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B;r o(R
} d+6 by,'
} SiM1Go}#
} 2K8?S
} _QhB0/C
kH)JBx.
堆排序: ?^# h|aUp.
iTt#%Fs)4M
package org.rut.util.algorithm.support; ~[|zf*ZISG
kRyt|ryWh
import org.rut.util.algorithm.SortUtil; =Wl*.%1 b
Hko(@z
/** L
1fK
* @author treeroot f
+#
* @since 2006-2-2 w84
]s%y
* @version 1.0 e'
`xU
*/ ()E:gqQ
public class HeapSort implements SortUtil.Sort{ Vs)%*1><
'm;M+:l
6
/* (non-Javadoc) 'k9?n)<DW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /$IF!q+C
*/ @;-6qZ
public void sort(int[] data) { lZ3o3"
MaxHeap h=new MaxHeap(); yxECK&&P0#
h.init(data); "dKYJ&$
for(int i=0;i h.remove(); 2Qoj>Wy{
System.arraycopy(h.queue,1,data,0,data.length); yrDWIU(8;6
} '.@'^80iQ
No\H
QQ
private static class MaxHeap{ {(DD~~)D
j15TavjGh
void init(int[] data){ :Rs% (Z
this.queue=new int[data.length+1]; Kb_R "b3v
for(int i=0;i queue[++size]=data; sFEkxZi<
fixUp(size); I6]|dA3G
} W~1/vJ.*l
} @~!1wPvF`I
dBV^Khf J
private int size=0; ~YIGOL"?
J,s)Fu\j@
private int[] queue; ?kICYtY:_b
)P^5L<q>|
public int get() { s*g yk
return queue[1]; eQk ~YA]K
} \ B~9Ue!
)shzJ9G
public void remove() { /H)K_H#|;
SortUtil.swap(queue,1,size--); #]s>
fixDown(1); :!a9|Fh~
} o6pnTu
file://fixdown 9o.WJ
private void fixDown(int k) { %6`{KT?
int j; r<;bArs-u
while ((j = k << 1) <= size) { Fj9/@pe1
if (j < size %26amp;%26amp; queue[j] j++; .+G),P)
if (queue[k]>queue[j]) file://不用交换 w;.'>ORC
break; 5Wj+ey^^w
SortUtil.swap(queue,j,k); -jB1tba
k = j; %Fc,$ =
} eNlE]W,=
} s,TKC67.%+
private void fixUp(int k) { {~yj]+Im
while (k > 1) { IMY?L
int j = k >> 1; &*
4uji
if (queue[j]>queue[k]) 47_4`rzy;
break; N\<RQtDg
SortUtil.swap(queue,j,k); ^R.#n[-r2
k = j; _=Y]ZX`j
} %S8e:kc6
} B$k<F8!%
M}4%LjD
} Fzk
a z
7Vy-
} 7?K?-Oj
/)SwQgK#
SortUtil: w:Fi
2aJ
%}cGAHV
package org.rut.util.algorithm; (Q !4\Gy
>Fm}s,
import org.rut.util.algorithm.support.BubbleSort; *=L3bBu?
import org.rut.util.algorithm.support.HeapSort; 4-[L^1%S[
import org.rut.util.algorithm.support.ImprovedMergeSort; t=iSMe
import org.rut.util.algorithm.support.ImprovedQuickSort; vy#n7hdCc
import org.rut.util.algorithm.support.InsertSort; vq*N
import org.rut.util.algorithm.support.MergeSort; 2 q J}5
import org.rut.util.algorithm.support.QuickSort; SN|EWe^
import org.rut.util.algorithm.support.SelectionSort; 1oaiA/bq
import org.rut.util.algorithm.support.ShellSort;
ykSn=0
gZgb-$b
/** ^_JD
7-g
* @author treeroot nBL7LocvR
* @since 2006-2-2 .ag4i;hS8
* @version 1.0 Pze$QBNoRd
*/ s)"C~w^
public class SortUtil { g^(wZ$NH
public final static int INSERT = 1; m;{_%oQ;
public final static int BUBBLE = 2; s
bd;Kn
public final static int SELECTION = 3; /hf}f=7kH
public final static int SHELL = 4; 5n1;@Vr
public final static int QUICK = 5; DF'-dh</*
public final static int IMPROVED_QUICK = 6; PygT_-3z{
public final static int MERGE = 7; sT dD=>
public final static int IMPROVED_MERGE = 8; au2ieZZ[
public final static int HEAP = 9; km'3[}8o&
bC?uyo"
public static void sort(int[] data) { qSj2=dlW
sort(data, IMPROVED_QUICK); |c,":R
} }% JLwN
private static String[] name={ zJ7vAL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @HJ&"72$<
}; DDn@M|*$
A D=@
private static Sort[] impl=new Sort[]{ Ae:(_UJz
new InsertSort(), (E59)z -
new BubbleSort(), OwV>`BIwns
new SelectionSort(), -_.)~)P
new ShellSort(), R9D<lX0%
new QuickSort(), j]}A"8=1
new ImprovedQuickSort(), tYiK#N7
new MergeSort(), mq$'\c
9.
new ImprovedMergeSort(), ,xB&{J
new HeapSort() ;!&A
}; xn1
+:?-Xd:p
public static String toString(int algorithm){ ZO{uG(u
return name[algorithm-1]; EP&