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。 ^9m]KEucd7
插入排序: 'E6gEJ
Am}PXj6
package org.rut.util.algorithm.support; 7n3x19T
)LS+M_
import org.rut.util.algorithm.SortUtil; ,`B>}
/** j2v[-N4 {J
* @author treeroot '/]Aaf@U8
* @since 2006-2-2 d)J] Y=j
* @version 1.0 8"I5v(TV
*/ ( ;S]{z%
public class InsertSort implements SortUtil.Sort{ C
Wl95g
1'._SMP
/* (non-Javadoc) *Uw#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5]O LV1Xt
*/ T>:g
ME
public void sort(int[] data) { =v#A&IPA'
int temp; J$=b&$I(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SoON@h/
} /3:IE%o
} YdL1(|EdM
} ."@a1_F|
Y_iF$m/R
} mDt",#g
QBT-J`Pz
冒泡排序: VBj;2~Xj4h
K&~#@I;
package org.rut.util.algorithm.support; }n&JZ`8<s
1*`JcUn,>
import org.rut.util.algorithm.SortUtil; {]^%?]e
{xb%P!o`
/** [Kj#KJxy
* @author treeroot F v^80M=z
* @since 2006-2-2 _ .
* @version 1.0 `0gK;D8t
*/ WOTu"Yj
public class BubbleSort implements SortUtil.Sort{ ` vmk
a9q?9X
/* (non-Javadoc) w+TuS).
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FXwK9
%
*/ yA )+-
public void sort(int[] data) { {*P7)
int temp; 9(gOk
for(int i=0;i for(int j=data.length-1;j>i;j--){ MicVNs
if(data[j] SortUtil.swap(data,j,j-1); KKTfxNxJn
} WiCM,wDi
} )ZT0zIG
} N`GwL
aF
} t;PnjCD<`
?fX8WRdh
} rVW'KN
|4*2xDcl
选择排序: kFs kn55
`pS)qx.a
package org.rut.util.algorithm.support; H
{Wpf9_
K
) x O_
import org.rut.util.algorithm.SortUtil; G6ES]
p:n^c5
/** TVh7h`Eg
* @author treeroot :s985sEv
* @since 2006-2-2 [
:(M<u`y>
* @version 1.0 F[giq1#
*/ X#C7r@H
public class SelectionSort implements SortUtil.Sort { X{5 DPhB,
$GKm`I"
/* #AnSjl
* (non-Javadoc) YU"\Wd[
* B{i;+[ase
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uWT&`m_(2
*/ 49kia!FR
public void sort(int[] data) { ':>*=&
int temp; J]YN2{(x
for (int i = 0; i < data.length; i++) { lNPbU ~k
int lowIndex = i; OmuZ0@.
for (int j = data.length - 1; j > i; j--) { vF\zZ<R/
if (data[j] < data[lowIndex]) { <^Nj~+G'
lowIndex = j; Wb(0Szk;
} &\br_
} $7
Uk;xV
SortUtil.swap(data,i,lowIndex); HWAqJb [
} e-av@a3
} s+~Slgl
H%%nB
} 0cU^ue%
_NW OSt
Shell排序: [gY__
UR=s{nFd
package org.rut.util.algorithm.support; 'GoeVq
lR3^&d72?
import org.rut.util.algorithm.SortUtil; ~7H.<kJt
!`U<RlK7
/** RN3D:b+
* @author treeroot \<>%_y'/)h
* @since 2006-2-2 a<36`#N
* @version 1.0 z=pV{'
*/ }&hgedx
public class ShellSort implements SortUtil.Sort{ "x^bl+_"
zUu>kJZ
/* (non-Javadoc) \gXx{rLW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1qN9bwRO
*/ $q+`GXc-
public void sort(int[] data) { ^*W<$A_
for(int i=data.length/2;i>2;i/=2){ U.0/r!po
for(int j=0;j insertSort(data,j,i); hjT1SW\I
} 9m9=O&C~-<
} Y% 9F
insertSort(data,0,1); rq?x]`u
}
n(1"6
&4FdA|9T
/** &3?yg61Ag
* @param data sYgnH:t X
* @param j )5OU!c
* @param i }w8AnaC
*/ aH"c0A
private void insertSort(int[] data, int start, int inc) { ?d)|vX3Uf
int temp; EKD>c$T^
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?8m/]P/~
} FI5C&d5d
} {`zF{AW8q
} $O-, :<HY
OwaXG/z~
} %%[TM(z
#OTsD+2Za=
快速排序: o>tT!8rH
t1^96@m^
package org.rut.util.algorithm.support; Xlw=R2`)~
8[ OiG9b
import org.rut.util.algorithm.SortUtil; 2ow\d b
k~dr;j
/** 4Pdk?vHK;
* @author treeroot (Mh\!rMg
* @since 2006-2-2 [40 YoVlfM
* @version 1.0 FCPRg^=<!~
*/ ]f~YeOB@
public class QuickSort implements SortUtil.Sort{ r&DK> H
Fgk/Ph3r
/* (non-Javadoc) C%>7mz-v5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M(jH"u&f
*/ 4UkLvL1x
public void sort(int[] data) { VA.1JBQ
quickSort(data,0,data.length-1); }6N|+z.cU
} x6tY _lzJ
private void quickSort(int[] data,int i,int j){ G9q0E|
int pivotIndex=(i+j)/2; ?J?!%Mw
file://swap e>)5j1
SortUtil.swap(data,pivotIndex,j); e8.bH#
q4N$.hpb
int k=partition(data,i-1,j,data[j]); 7 '/&mX>
SortUtil.swap(data,k,j); kv b-=
if((k-i)>1) quickSort(data,i,k-1); 0k 8SDRWU
if((j-k)>1) quickSort(data,k+1,j); $z]l4Hj
/K<Nlxcm
} _C\b,D}p
/** Of=z!|l2
* @param data OHo0W)XUU
* @param i XN;eehB?aE
* @param j H !u:P?j@\
* @return 8=9sIK2
*/ ]FBfh.#X@
private int partition(int[] data, int l, int r,int pivot) { c`QsKwa
do{ U\{Z{F%8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;|y,bo@sJJ
SortUtil.swap(data,l,r); \tqAv'jA|
}
f7s.\
while(l SortUtil.swap(data,l,r); Dn?L
return l; jGCW^#GE
} c[$oR,2b13
L)5nb-qp
} 6dUP's_
H<yec"
改进后的快速排序: JGe;$5|q8
j@2 hI,+
package org.rut.util.algorithm.support; FzIA>njt
H>]x<#uz)
import org.rut.util.algorithm.SortUtil; =$Z'F<|d
OUPpz_y
/** ?6bE!36
* @author treeroot <k!G%R<9
* @since 2006-2-2 Me>'QVr
* @version 1.0 DI7trR`
*/ 9P$'ON'"
public class ImprovedQuickSort implements SortUtil.Sort { <]nI)W(
2srz) xEe
private static int MAX_STACK_SIZE=4096; 0^4*[?l9q
private static int THRESHOLD=10; 7>LhXC
/* (non-Javadoc) J:(l&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cu]X&l
*/ n'H\*9t
public void sort(int[] data) { L%"Mp(gZ
int[] stack=new int[MAX_STACK_SIZE]; "e"`Or
S}/CzQ
int top=-1; S}E@*t2h
int pivot; d?mdw
?|
int pivotIndex,l,r; j;
C(:6#J
Nvi14,q/
stack[++top]=0; 4C:YEX~
stack[++top]=data.length-1; Q8n?7JB
~gc)Ww0(Q
while(top>0){ {~"=6iyj
int j=stack[top--]; }!LYV
int i=stack[top--]; +l9avy+P(
"n:9JqPb
pivotIndex=(i+j)/2; V4H+m,R
pivot=data[pivotIndex]; @b
zrJ7$
MqqS3
SortUtil.swap(data,pivotIndex,j); a#1X)ot
AN;?`AM;
file://partition Ub$$wOsf
l=i-1; h4#5j'RO
r=j; `6A"eDa
do{ -*EJj>x
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1\p[mN
SortUtil.swap(data,l,r); zSO[f
} lVdExR>H
while(l SortUtil.swap(data,l,r); QEPmuG
SortUtil.swap(data,l,j); C*9m `xh
3,?y !
if((l-i)>THRESHOLD){ saV `-#
stack[++top]=i; Tla*V#:Ve
stack[++top]=l-1; vBp5&*
} ec=C7M
|
if((j-l)>THRESHOLD){ I2dt#
stack[++top]=l+1;
,Y!)V
stack[++top]=j; <O WPG,
} 7\xa_nrI
HUJ $e2[
} yZ{YIy~
file://new InsertSort().sort(data); 7~',q"4P/_
insertSort(data); r0sd_@Oj
} Q pX@;j
/** YpL}R#
* @param data xR.Ql>
*/ ?|33Np)
private void insertSort(int[] data) { ~-6;h.x=
int temp; E(oNS\4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S92Dvw?
} }&j&T9oX
} zehF/HBzE
} /vhh2`
ax<0grK
} Rq*m x<HDX
$lqV(s
归并排序: jmIP c3O0
5~kf:U%~
package org.rut.util.algorithm.support; 0kkiS3T
_D:/?=y;e
import org.rut.util.algorithm.SortUtil; 5v3B8 @CsA
n RGH58
/** $`
* @author treeroot >C i=H(8vN
* @since 2006-2-2 mF1oY[xa_
* @version 1.0 1a<,/N}}t
*/ im'0^
public class MergeSort implements SortUtil.Sort{ Ov9.qNT
NF.SGga
/* (non-Javadoc) l^_X?L@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g41LpplX
*/ f,1rmX1
public void sort(int[] data) { !cpBX>{w
int[] temp=new int[data.length]; >|s=l`"Xz
mergeSort(data,temp,0,data.length-1); j@DyWm/7
} 0nS6<:
IE6/
E
private void mergeSort(int[] data,int[] temp,int l,int r){ @dXf_2Tv=
int mid=(l+r)/2; Cfj*[i4
if(l==r) return ; `{/=i|6
mergeSort(data,temp,l,mid); z23KSPo
mergeSort(data,temp,mid+1,r); +k>v^sz
for(int i=l;i<=r;i++){ 84{<]y
temp=data; N
8OPeY
} UY+~xzm
int i1=l; 8,R]R=
int i2=mid+1; *w _j;
for(int cur=l;cur<=r;cur++){ _)|!.r&)63
if(i1==mid+1) ?Cws25G
data[cur]=temp[i2++]; $5A XE;~{
else if(i2>r) :J"e{|g',
data[cur]=temp[i1++]; HCu1vjU(]
else if(temp[i1] data[cur]=temp[i1++]; >}9TdP/oT
else uODsXi{z
data[cur]=temp[i2++]; \DHCf4,
} =nsY[ s<
} <7p2OPD
d+^;kse
} YZk& 'w
rf~Ss<
改进后的归并排序: cO8;2u,Gvi
_CZ* z
package org.rut.util.algorithm.support; t5_`q(:
;(afz?T
import org.rut.util.algorithm.SortUtil; ]oY~8HW
k\[2o
/** 56)B/0=
* @author treeroot 0L6L_;o
* @since 2006-2-2 <7zpH SFBq
* @version 1.0 V_~wWuZ-
*/ l>G#+#{
public class ImprovedMergeSort implements SortUtil.Sort { t.w?OyO
9\xw}ph
private static final int THRESHOLD = 10; yG_#>3sD+%
'!0CwZ
7
/* jIl-}/2
* (non-Javadoc) x:2_FoQ
* BgRiJFa.d[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z+}SM]m
*/ +vuW9
public void sort(int[] data) { yT>T
Vq/e
int[] temp=new int[data.length]; wEp/bR1=
mergeSort(data,temp,0,data.length-1); Tx xc-$z
} \-B>']:R4
48DsRy
private void mergeSort(int[] data, int[] temp, int l, int r) { vr;7p[~
int i, j, k; ge`J>2
int mid = (l + r) / 2; jm?mO9p~
if (l == r) qM`SN4C
return; ZTun{Dw{
if ((mid - l) >= THRESHOLD) 5 909O
mergeSort(data, temp, l, mid); (lm/S_U$
else XyI w5
9
insertSort(data, l, mid - l + 1); 'FVT"M~
if ((r - mid) > THRESHOLD) #:yZJS9f9
mergeSort(data, temp, mid + 1, r); <s:Xj
else HP8pEo0Y
insertSort(data, mid + 1, r - mid); O+yR+aXr'8
C{Zv.+F
for (i = l; i <= mid; i++) { 4e(@b3y
temp = data; Uag1vW,c
} oacY-&
for (j = 1; j <= r - mid; j++) { *Dn{MD7,M
temp[r - j + 1] = data[j + mid]; XkD_SaL}
} v
ipmzg(S
int a = temp[l]; zb4g\H
0
int b = temp[r]; h~1QmEat
for (i = l, j = r, k = l; k <= r; k++) { 9W8Dp?:
if (a < b) { 8}0
D?
data[k] = temp[i++]; "~
`-Jkm
a = temp; fG{oi(T
} else { 07#!b~N
data[k] = temp[j--]; Hy6Np62
b = temp[j]; ,|H!b%ZW
} 5|b/G
} 1@ina`!1O
} zknD(%a
cnsGP*w
/** I|M*yObl6
* @param data `Ctj]t
* @param l =Dz[|$dV
* @param i -1o1k-8d
*/ :b=0_<G
private void insertSort(int[] data, int start, int len) { C+k>Ajr
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
Bb o*
} N3?d?+A$
} . FruI#99
} !d^`YEfE
} |j+~Td3})&
}>w;
+XU
堆排序: 7[)(;-
' 4"L;){:L
package org.rut.util.algorithm.support; u|ZO"t
B/71$i
import org.rut.util.algorithm.SortUtil; kel {9b=i
*"
)[Srbg
/** %F~
dmA#:
* @author treeroot "duJl-
* @since 2006-2-2 Nm~#$orI|
* @version 1.0 p5KNqqZZ
*/ )&9RoW()?
public class HeapSort implements SortUtil.Sort{ SS`C0&I@p
l.BNe)1!22
/* (non-Javadoc) 2R!W5gs1<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RB"rx\u7K
*/ ?]z
._I`E
public void sort(int[] data) {
]Oy<zU
MaxHeap h=new MaxHeap(); -AE/,@ \P
h.init(data); 8`2K=`]ES+
for(int i=0;i h.remove(); iCS/~[
System.arraycopy(h.queue,1,data,0,data.length); !xI![N^
} DkIFvsLK
9E^piLA
private static class MaxHeap{ Ba6xkEd
UU/|s>F
void init(int[] data){ g6V*wjC
this.queue=new int[data.length+1]; <G>PPf}
for(int i=0;i queue[++size]=data; N[-)c,O
fixUp(size); Fo#*_y5\
} b ~gF,^w
} LPO" K"'w
S\A[Z&k0
private int size=0; hd~rC*I
rx/6x(3
private int[] queue; ;qMlGXW*q
V'.|IuN
public int get() { wLbngO=VG
return queue[1]; =Ug_1w
} .p`'^$X^
q4{ t H
public void remove() { Fn,|J[sC
SortUtil.swap(queue,1,size--); ;j=1 oW
fixDown(1); -+>am?
} ui1m+
file://fixdown RHbwq]
private void fixDown(int k) { ks D1NB;9
int j; gL`SZr9
while ((j = k << 1) <= size) { 0^[6
if (j < size %26amp;%26amp; queue[j] j++; *$VurqLn
if (queue[k]>queue[j]) file://不用交换 6ZBD$1$A!
break; 7W"menw
SortUtil.swap(queue,j,k); w3>|mDA}I
k = j; vvxj{fxb)
} 4(82dmKO
} ny= {V*m
private void fixUp(int k) { R
28*
while (k > 1) { Mk[`HEO
int j = k >> 1; _3a
5/IZ
if (queue[j]>queue[k]) 3iw9jhK!W
break; j&.BbcE45
SortUtil.swap(queue,j,k); 7krA+/Qr(
k = j; d}_c(
} 7w, FA
} L ]c9
S)yV51^B
} yxbTcZ
?W_U{=anl
} @g~sgE}#
aehMLl9cl
SortUtil: `'WLGQG
[<QWTMjR
package org.rut.util.algorithm; 'Aj>+H<B
99K+7G\{
import org.rut.util.algorithm.support.BubbleSort; n~j[Pw
import org.rut.util.algorithm.support.HeapSort; Sj?sw]3
import org.rut.util.algorithm.support.ImprovedMergeSort; R:?vY!
import org.rut.util.algorithm.support.ImprovedQuickSort; `x)bw
import org.rut.util.algorithm.support.InsertSort; U.OX*-Cd
import org.rut.util.algorithm.support.MergeSort;
+`-a*U94
import org.rut.util.algorithm.support.QuickSort; /MH@>C
_
import org.rut.util.algorithm.support.SelectionSort; Z"X*FzFo
import org.rut.util.algorithm.support.ShellSort; xQap44KPZ
u2-7vudh
/** 0h4}RmS
* @author treeroot ^<0 NIu}
* @since 2006-2-2 QaR.8/xV
* @version 1.0 NCt sx /C
*/ Xf9%A2 iB
public class SortUtil { RCXSz
public final static int INSERT = 1; bq-\'h
f<
public final static int BUBBLE = 2; :* b4/qpYv
public final static int SELECTION = 3; =fK'Ep[
public final static int SHELL = 4; (L%q/$
public final static int QUICK = 5; u V7Hsg9l
public final static int IMPROVED_QUICK = 6; tYZGf xj
public final static int MERGE = 7; <9a_wGs
public final static int IMPROVED_MERGE = 8; /g'-*:a
public final static int HEAP = 9; <z2mNq
F*VMS
public static void sort(int[] data) { vp-7>Wj
sort(data, IMPROVED_QUICK); TZNgtR{q
} N'P,QiR,z<
private static String[] name={ .+}o'rU
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [nIG_j>D-f
}; 9X9zIh]JV
L]N2rMM
private static Sort[] impl=new Sort[]{ 5l0rw)
new InsertSort(), O7'3}P;
new BubbleSort(), 2EwWV0BS
new SelectionSort(), gecT*^
new ShellSort(), -Jo :+].
new QuickSort(), Cnci%eo
new ImprovedQuickSort(), A5<Z&Y[
new MergeSort(),
iLcadX
new ImprovedMergeSort(), {))S<_yN
new HeapSort() ZM`P~N1?)g
}; a9zph2o-
x9A
ZS#e)[
public static String toString(int algorithm){ T,2Dr;
return name[algorithm-1]; 2%C5P0;QX
} 7u5\#|yL
u%T$XG
public static void sort(int[] data, int algorithm) { %yM'
Z[-
impl[algorithm-1].sort(data); r5fkt>HZ
} 3H#/u! W
#r)1<}_e#
public static interface Sort { p]z54 ~
public void sort(int[] data); &d3 '{~:
} I@Z*Nu1L
np\2sa`
public static void swap(int[] data, int i, int j) { *M<BPxh0w]
int temp = data; wx%nTf/Oa
data = data[j]; ^@lg5d3F
data[j] = temp; m:fouMS
} 124L3AG
} tr9Y1vxo{