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。 (9GWbB?
插入排序: P [ck84F/
*?>T,gx}
package org.rut.util.algorithm.support; E \EsWb
I@~QV@U
import org.rut.util.algorithm.SortUtil; v`x.)S1
/** Tc:)-
z[o
* @author treeroot FFpT~.
* @since 2006-2-2 ({)+3]x
* @version 1.0 fc3{sZE2M
*/ 4Uo&d#o)C-
public class InsertSort implements SortUtil.Sort{ W:nef<WH
*W1dG#Np}
/* (non-Javadoc) @)M9IOR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EU;9*W<
*/ ZzpUUH/r
public void sort(int[] data) { EjR9JUu
int temp; (D&3G;0tK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0<@KG8@hI;
} gzT*-
} <w9JRpFY
} ]
vsz,
0
&64h ;P<
} (OL4Ex' ]
NB#OCH1/9
冒泡排序: iByf{ I>+
pRpBhm;iJ
package org.rut.util.algorithm.support; djG*YM\B
KC6.Fr{
import org.rut.util.algorithm.SortUtil; iC~^)-~H=w
zxl@(hd
/** pa3{8x{9m
* @author treeroot >Q;l(fdj
* @since 2006-2-2 itP,\k7>d
* @version 1.0 *#|&JIEsi
*/ 783,s_
public class BubbleSort implements SortUtil.Sort{ >T-u~i$s
JR21>;l#2
/* (non-Javadoc) HM1Fz\Sf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q~o<*W
*/ :\c ^*K(9
public void sort(int[] data) { m?}6)\ob
int temp; a#k6&3m&
for(int i=0;i for(int j=data.length-1;j>i;j--){ P|E| $)m
if(data[j] SortUtil.swap(data,j,j-1); 6;d*r$0Fc
} FVbb2Y?R
} *OsQ}onv
} 5Ln,{vsv
} 7Q9 w?y~c
b. '-?Nn
} xm~`7~nFR
An0|[ uWH
选择排序: \?-<4Bc@
4k1xy##
package org.rut.util.algorithm.support; J!(<y(l
G>}255qY
import org.rut.util.algorithm.SortUtil; gZXi]m&
AV]2euyn
/** :eCwY
* @author treeroot JyK3{wYS
* @since 2006-2-2 3;9^
* @version 1.0 WE#^a6
*/ 4F:\-O
public class SelectionSort implements SortUtil.Sort { G e@{_
SKN`2[ahD
/* _;y9$"A
* (non-Javadoc) RbnVL$c
* +\]\[6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
jB2[(
*/ g:@#@1rB6
public void sort(int[] data) { oZgjQM$YP
int temp; _jVN&\A]mC
for (int i = 0; i < data.length; i++) { ^{`exCwMx
int lowIndex = i; .~;\eW [
for (int j = data.length - 1; j > i; j--) { ?l{nk5,?-Y
if (data[j] < data[lowIndex]) { 5C]x!>kX
lowIndex = j; ,&.!?0+
} 2F.;;Ab
} "&u@d~`-n
SortUtil.swap(data,i,lowIndex); (ZZ8L-s
} cuITY^6
} 90rol~M&
(?c"$|^J
} Rhs/3O8k
7n<{tM
Shell排序:
UI0VtR]
j,eo2HaL
package org.rut.util.algorithm.support; Zu[su>\
_V6ukd"B~
import org.rut.util.algorithm.SortUtil; b8UO,fY q
#c!lS<z
/** Lk8ek}o'
* @author treeroot C&%_a~
* @since 2006-2-2 cm+Es6;
* @version 1.0 tyFzSrfc
*/ Lqa4Vi
public class ShellSort implements SortUtil.Sort{ k4J+J.|
vk^xT
/* (non-Javadoc) ?fSG'\h>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8nV+e~-w
*/ "!^"[mX4
public void sort(int[] data) { CA~-rv
for(int i=data.length/2;i>2;i/=2){ ?6U0PChy
for(int j=0;j insertSort(data,j,i); R-$!9mnr
} g) jYFfGfH
} chX"O0?"
insertSort(data,0,1); )ez9"# MH'
} T0)@pt7>
DTL.Bsc-.
/** ~f98#43
* @param data GD$l||8
* @param j (\x]YMLH
* @param i wmLs/:~
*/ 57c8xk[.2
private void insertSort(int[] data, int start, int inc) { 4tBYR9|
int temp; =7eV/3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
8d'0N
} Wne@<+mX
} ^1.By^
$
} S,he6zS
{`@G+JV~Jw
} |CyE5i0
4kx
N<]
快速排序: /\n-P'}
j\M?~=*w
package org.rut.util.algorithm.support; iH@UTE ;
L!xi
import org.rut.util.algorithm.SortUtil; _t^&Ah*
gPPkT"
/** zO6oT1I
* @author treeroot (sZ"iGn%
* @since 2006-2-2 3Y$GsN4ln
* @version 1.0 Q$"D]!G
*/ ~t~|"u"P
public class QuickSort implements SortUtil.Sort{ ;2QP7PrSY
K-Ef%a2#`
/* (non-Javadoc) ]Y&VT7+Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;$g?T~v7
*/ V'gh6`v
public void sort(int[] data) { 5{,<j\#L
quickSort(data,0,data.length-1); W"{N Bi
} 8quaXVj^a
private void quickSort(int[] data,int i,int j){ ox.F%)eQ
int pivotIndex=(i+j)/2; h<QY5=SF
file://swap YoFxW5by
SortUtil.swap(data,pivotIndex,j); )^hbsMhO
qHsA1<wg
int k=partition(data,i-1,j,data[j]); @H8EWTZ
SortUtil.swap(data,k,j); @=u3ZVD
if((k-i)>1) quickSort(data,i,k-1); W(p_.p"
if((j-k)>1) quickSort(data,k+1,j); Y'X%Aw;`
Aos+dP5h,8
} +=)+'q]S
/** wMN]~|z>
* @param data A=0'Ks
* @param i Tlr v={
* @param j MolgwVd
* @return (/]
J3
*/ u ^RxD^=L
private int partition(int[] data, int l, int r,int pivot) { G3v5KmT
do{ 2Tppcj v
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `Q,H|hp;k;
SortUtil.swap(data,l,r); Flb&B1
} Znv,9-
while(l SortUtil.swap(data,l,r); ?aMOZn?
return l; c:.eGH_f
} V(*(F7+
g9F?z2^
} Z3!`J&
u]@['7
改进后的快速排序: #X"@<l4F
x,V r=FB
package org.rut.util.algorithm.support; / XIhj
=g|FT
import org.rut.util.algorithm.SortUtil; bZV/l4TU
Z?z.?ar
/** E_LN]v
* @author treeroot Z/J y'$x
* @since 2006-2-2 T[A69O]v
* @version 1.0 t#"Grk8Mz&
*/ Af{"pzY
public class ImprovedQuickSort implements SortUtil.Sort { GPkpXVm
PUX;I0Cf
private static int MAX_STACK_SIZE=4096; Lj;2\]
private static int THRESHOLD=10; 1-QS~)+
/* (non-Javadoc) WuW^GC{7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wv/=O}
*/ Q NVa?'0"Y
public void sort(int[] data) { 7VI*N)OZ8
int[] stack=new int[MAX_STACK_SIZE]; pb=h/8R
5/z/>D;
int top=-1; gPc=2
int pivot; }o{(S%%
int pivotIndex,l,r; lb1Xsgm{
^G-@06 /!
stack[++top]=0; ~y[7K{{ ;T
stack[++top]=data.length-1; >-{Hyx
HUO j0T
while(top>0){ 7v_8_K
int j=stack[top--]; pY$Q
int i=stack[top--]; yR.Ong
Dn }Jxu'(
pivotIndex=(i+j)/2; H 7
^/q7
pivot=data[pivotIndex]; ^/=KK:n~
tFl"n;~T
SortUtil.swap(data,pivotIndex,j); *HB-QIl
B,fo(kG
file://partition /|#fejPh
l=i-1; 9Lfv^V0
r=j; %;"y+YFdv
do{ Oz#{S:24M+
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pFz`}?c0
SortUtil.swap(data,l,r); ]"1DGg \A
} VOh4#%Vj
while(l SortUtil.swap(data,l,r); $xdy&
SortUtil.swap(data,l,j); :T(|&F[(
$
o#V#
if((l-i)>THRESHOLD){ _oDz-
stack[++top]=i; t<?,F
stack[++top]=l-1; 7i1q wRv
} _8agtQ:<
if((j-l)>THRESHOLD){ Pd]|:W< E
stack[++top]=l+1; 5.J.RE"M
stack[++top]=j; F^fdIZx
} _2 osV[e
iMRwp+$
} 4|#WFLo@
file://new InsertSort().sort(data); t.\dpBq
insertSort(data); ',5ky{
} wJY'
/** @2v_pJy^
* @param data DkAAV9*
*/ 42ivT_H
private void insertSort(int[] data) { 3%=~)7cF
int temp; `,*5wBC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y Fq&8 x<X
} K@w{"7}
} Fh9h,'
V"
} ^@NU}S):yN
g5r(>, vY
} WQO) =n
t}/( b/VD
归并排序: b<gr@ WF
i,9)\1R
package org.rut.util.algorithm.support; S#}
KIy
0>Z_*U~6
import org.rut.util.algorithm.SortUtil; n#_$\
p>Yd
'K,:j 388
/** e6RPIg
* @author treeroot kt$jm)UI~l
* @since 2006-2-2 0v$~90)
* @version 1.0 -_eLf#3
*/ mUF,@>o
public class MergeSort implements SortUtil.Sort{ p0<\G
iTU5l5U z
/* (non-Javadoc) N_[*H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xe&i^+i
*/ 3WIk
public void sort(int[] data) { O/(xj2~$J
int[] temp=new int[data.length]; &H:(z4/
mergeSort(data,temp,0,data.length-1); 3n}?bY8@5_
} yd`mG{Z
'$zIbQ:
private void mergeSort(int[] data,int[] temp,int l,int r){ RQu(Wu|m.
int mid=(l+r)/2; (;^syJrh
if(l==r) return ; J!U}iD@occ
mergeSort(data,temp,l,mid); Pw!MS5=r
mergeSort(data,temp,mid+1,r); ChXq4]
for(int i=l;i<=r;i++){ #"iu|D
temp=data; [-oc>;`=l
} r<Kx0`y
int i1=l; H\tUpan6fy
int i2=mid+1; 9o:Lz5o
for(int cur=l;cur<=r;cur++){ (+y
if(i1==mid+1) >]5P
3\AQV
data[cur]=temp[i2++]; <1\Nb{5
else if(i2>r) *N'p~LJ
data[cur]=temp[i1++]; "d5n \@[t
else if(temp[i1] data[cur]=temp[i1++]; OMg<V
else >_ 2dvg=U
data[cur]=temp[i2++]; /HRFAqep
}
n$,*|_$#
} E#t>Qn
=]Jd9]vi
} _Qi&J.U>
*>qp:;,DKP
改进后的归并排序: H@8sNV/u
M, mvys$
package org.rut.util.algorithm.support; L"Olwwmk
HcSXsF
import org.rut.util.algorithm.SortUtil; ^iw'^6~
,0HRAmG
/** P:]^rke~&
* @author treeroot _?0}<kQ&
* @since 2006-2-2 Ob&<]
* @version 1.0 uw+M
*/ Qe0lBR?H
public class ImprovedMergeSort implements SortUtil.Sort { d-r@E3
1 \6D '/G
private static final int THRESHOLD = 10; KE3;V2Ym f
eHNyNVz
/* 0o*8#i/)!3
* (non-Javadoc) 6- B|Y3)B
* ):_\;.L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _1 !OlQ
*/ HLaRGN3,
public void sort(int[] data) { (7=!+'T"
int[] temp=new int[data.length]; RxWVe-Dg
mergeSort(data,temp,0,data.length-1); /9pwZ%:<
} !fR3(=oN
+jnJ|h({
private void mergeSort(int[] data, int[] temp, int l, int r) { 3/W'V,5G6
int i, j, k; r{I%
\R!@
int mid = (l + r) / 2; {vyv7L
if (l == r) )6,=f.%
return; z]`k#O%%)
if ((mid - l) >= THRESHOLD) HqD^B[jS
mergeSort(data, temp, l, mid); Pax|x15
else MC:@U~}6
insertSort(data, l, mid - l + 1); rJbf_]^
if ((r - mid) > THRESHOLD) =\wxsL
mergeSort(data, temp, mid + 1, r); >!bJslWA
else FOy|F-j
insertSort(data, mid + 1, r - mid); 8=uu8-l8g
x$Oq0d{T
for (i = l; i <= mid; i++) { E3gh?6
temp = data; Tl[!=S
} v4c[(&
for (j = 1; j <= r - mid; j++) { P?B;_W+~A.
temp[r - j + 1] = data[j + mid]; LKOwxF#TKT
} p &"`RS#Z
int a = temp[l]; k=JrLfD4
int b = temp[r]; T1Z;r*}
for (i = l, j = r, k = l; k <= r; k++) { Jx](G>F4f1
if (a < b) { yS(fILV
data[k] = temp[i++]; 8sM|%<$=j
a = temp;
sAS:-wp
} else { JJ2_hVU
data[k] = temp[j--]; :hFIl0$,"3
b = temp[j]; 4V i`* !
} 1A G<$d5U|
} cacr=iX
} %'7lbpy,f
WR yaKM
/** yiC^aY=-
* @param data +&( Mgbna
* @param l dj7hx"BI
* @param i 6GSI"M6s
*/ LzXmb 7A
private void insertSort(int[] data, int start, int len) { %9N7Ln|%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i}mVQ\j5
} ^2on.N q>
} vZ&T}H~8
} iwp{%FF
} +|'c>,?2H
_Wp{[TH
堆排序: nv%rJy*w[
X#TQ_T"
package org.rut.util.algorithm.support; lG!|{z7+0
p&bROuw<T
import org.rut.util.algorithm.SortUtil; S^>,~R.TX
MLje4
/** >qjq=Ege
* @author treeroot b8"?VS5-"
* @since 2006-2-2 LO khjHR
* @version 1.0 dx&'fe*?
*/ `YLD`(\
public class HeapSort implements SortUtil.Sort{ Yu[ t\/
f~y%%+{p
/* (non-Javadoc) >x+6{^}Q >
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o` ZQ d,3
*/ Avd
^
public void sort(int[] data) { )d1_Wm#B
MaxHeap h=new MaxHeap(); ,PuL{%PXu
h.init(data); r1.nTO%
for(int i=0;i h.remove(); zHL@i0>^
System.arraycopy(h.queue,1,data,0,data.length); ICs\
z
} PQnF
!^=*Jq>
private static class MaxHeap{ ,dov<U[ia
(-xS?8x$
void init(int[] data){ NI#:|}CYS
this.queue=new int[data.length+1]; , 5kKimTt
for(int i=0;i queue[++size]=data; G!W[8UG
fixUp(size); =K{"{5Wb
} 5eoska#y
} /!Wu D\B
}Q?c"H!/
private int size=0; Hh-+/sO~"
%?uc><&?e
private int[] queue; ;WM"cJo9
$Ifmc`r1
public int get() { - UdEeZz.
return queue[1]; [}/LD3
} u7\J\r4,+
/#-C4"|
public void remove() { R)z4n
SortUtil.swap(queue,1,size--); 7X q,z
fixDown(1); #Jn_c0
} SHbtWq}T
file://fixdown ~\.w^*$#Y
private void fixDown(int k) { ^3{TZ=_;|
int j; N#7QzB9]
while ((j = k << 1) <= size) { #PanfYR
if (j < size %26amp;%26amp; queue[j] j++;
lBhLf@
if (queue[k]>queue[j]) file://不用交换 X1Ac*oLN
break; oCi=4#g%7
SortUtil.swap(queue,j,k); *x])Y~oQ
k = j; ?^$MRa:D
} &nkW1Ner9
} OCJnjlV%
private void fixUp(int k) { LbG_ z =A
while (k > 1) { J'fQW<T4wU
int j = k >> 1; jbu8~\"
if (queue[j]>queue[k]) 8p9bCE>\
break; C\nhqkn
SortUtil.swap(queue,j,k); )V ;mwT!Q
k = j; vj\d A2!~
} YZ7|K<
} X4t s)>"d
;A'Z4=*~
} 2
:mn</z
&)vC;$vD`
} jhu&&==\f
pN9A{v(
SortUtil: C;`XlQG `
{R61cD,n
package org.rut.util.algorithm; ?jt}*q>X]
&A)B~"[~
import org.rut.util.algorithm.support.BubbleSort; A~+S1
import org.rut.util.algorithm.support.HeapSort; s]mY*@a%
import org.rut.util.algorithm.support.ImprovedMergeSort; dd%h67J2<
import org.rut.util.algorithm.support.ImprovedQuickSort; :
G`hm{
import org.rut.util.algorithm.support.InsertSort; DrBUe'RH:M
import org.rut.util.algorithm.support.MergeSort; \ZhfgE8{%
import org.rut.util.algorithm.support.QuickSort; ~r$jza~o(
import org.rut.util.algorithm.support.SelectionSort; ]Xf% ,iu
import org.rut.util.algorithm.support.ShellSort; @`Eg(
XC "'Q+
/** gV`=jAE_
* @author treeroot [],1lRYI9_
* @since 2006-2-2 13%t"-@bh
* @version 1.0 ^;maotHn
*/ J.dLPKU;-
public class SortUtil { t|!j2<e
public final static int INSERT = 1; z=_Ef3`M
public final static int BUBBLE = 2; \,&co
public final static int SELECTION = 3; Nl9I*x^e
public final static int SHELL = 4; 7&"n`@(.!
public final static int QUICK = 5; ]oV{t<0a
public final static int IMPROVED_QUICK = 6; QgD g}\P
public final static int MERGE = 7; P=+nB*hG
public final static int IMPROVED_MERGE = 8; )aao[_ZS
public final static int HEAP = 9; VX+jadYdq
MJCzo |w
public static void sort(int[] data) { hL;8pE8
sort(data, IMPROVED_QUICK); +sx 8t
} J}@z_^|"mJ
private static String[] name={ VY"9?2?/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ra/Ukv_ v
}; =w5O&(
C?= P
private static Sort[] impl=new Sort[]{ _s$_Sa ;
new InsertSort(), RZ7(J
new BubbleSort(), mVsIAC$}8
new SelectionSort(), drd/ jH&
new ShellSort(), e9Pk"HHl
new QuickSort(), ~-t>z
new ImprovedQuickSort(), UMp/\&0
new MergeSort(), A@D2+fS
new ImprovedMergeSort(), 3
M10fI?
new HeapSort() ym/fFm6h
}; lz0TK)kuC
TO*BH^5R
public static String toString(int algorithm){ ^o@,3__7Q
return name[algorithm-1]; Y<b-9ai<w
} [kzd(u
3bd5FsI^pU
public static void sort(int[] data, int algorithm) { kctzNGF|
impl[algorithm-1].sort(data); ^(f4*m6`
} L0]_hxE?
@a>2c$%
public static interface Sort { GF:`>u{C
public void sort(int[] data); :@xm-.D
} IU]^&e9u
<uk1?Qg
public static void swap(int[] data, int i, int j) { ai^4'{#zi
int temp = data; lJs<
data = data[j]; /?6|&
data[j] = temp; Af5D>/
} {[t`j+J
} :!f(F9