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。 v~C
Czg
插入排序: J{<X7uB
Hio0HL-
package org.rut.util.algorithm.support; }6~hEc*/"
M0"_^?
import org.rut.util.algorithm.SortUtil; y<3-?}.aZ
/** #z%fx
* @author treeroot est9M*Fn
* @since 2006-2-2 RBd7YWo\|j
* @version 1.0
8W7J3{d
*/ I][*j
public class InsertSort implements SortUtil.Sort{ Lb-OsKU
]5cT cX;Z#
/* (non-Javadoc) G4;Oi=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {TROoX~H?
*/ *>}@7}f
public void sort(int[] data) { E&w7GZNt
int temp; _61gF[r4!Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C.P*#_R
} MjRHA^b
} e%M;?0j
} =XQ%t
@z0
RP|`HkP-2
} ?$pCsBDo
yPp9\[+^j
冒泡排序: cVpp-Z|s8
IP pN@
package org.rut.util.algorithm.support; y.k~Y0
!BF;
>f`
import org.rut.util.algorithm.SortUtil; ^7*11%Q
>Tx?%nQ
/** TX/Xt7#R:
* @author treeroot |e&\<LwsP
* @since 2006-2-2 3}1u\(Mf
* @version 1.0 (9d &
*/ BlO<PMmhT&
public class BubbleSort implements SortUtil.Sort{ o-HT1Hc!
^\% (,KNo
/* (non-Javadoc) 8,%^
M9zBP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gJ{)-\
*/ Fo_sgv8O<
public void sort(int[] data) { ~?}Emn;t
int temp; !<";cw(q
for(int i=0;i for(int j=data.length-1;j>i;j--){ J;e2&gB
if(data[j] SortUtil.swap(data,j,j-1); C )
s5D
} 0+ '&`Q!u
} 5tkAFb4P
} =qIp2c}Rx
} B$K=\6o
Q&;9x? e
} ?V=ZIGj
JbbzV>
选择排序: ,0 sm
qDIZJh
package org.rut.util.algorithm.support; eByz-,{P
e*C(q~PQ
import org.rut.util.algorithm.SortUtil; _VN?#J)o
3"i-o$P
/** ]6`%
* @author treeroot O bS3
M
* @since 2006-2-2 !.gIHY
* @version 1.0 ITBE|b
*/ p
l0\2e)
public class SelectionSort implements SortUtil.Sort { 3$R1ipb
e !Y~Qy
/* !pW0qX\1n
* (non-Javadoc) T^KKy0ZGM
* }0z)5c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SH$PwJ U
*/ ~mxO7cy5Cg
public void sort(int[] data) { 7}>E J
int temp; ki!0^t:9
for (int i = 0; i < data.length; i++) { t*u:hex
int lowIndex = i; +6\Zj)
for (int j = data.length - 1; j > i; j--) { n\53w h@+
if (data[j] < data[lowIndex]) { W!(zT6#
lowIndex = j; Q%G8U#Tm
} AkV#J,
3LC
} eMsd37J
SortUtil.swap(data,i,lowIndex); u#.2w)!D
} x;d6vBTUb
} 6{b>p+U
IJ"q~r$
} pnOAs&QAm
0e4{{zQx
Shell排序: }Y\%RA
EQM{
package org.rut.util.algorithm.support; T8g$uFo
i.m^/0!
import org.rut.util.algorithm.SortUtil; ;_(4Q*Yx
Q2gq}c~
/** TeM|:o
* @author treeroot QWYJ*
* @since 2006-2-2 lo+A%\1
* @version 1.0 :F?C)F
*/ 4B.*g-L
public class ShellSort implements SortUtil.Sort{ tD)J*]G
+e``OeXog
/* (non-Javadoc) ,J@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S1_RjMbYM
*/ #6=
public void sort(int[] data) { 1+s;FJ2}
for(int i=data.length/2;i>2;i/=2){ g-
gV2$I
for(int j=0;j insertSort(data,j,i); "to;\9lP
} ]a`$LW}
} 0 H:X3y+
insertSort(data,0,1); WsB ?C&>x
} 7[)E>XRE
e^voW"?%
/** hVY$;s
* @param data k_#)Tw*
* @param j <P_-s*b
* @param i WyiQoN'q
*/ |6-nbj
private void insertSort(int[] data, int start, int inc) { 2>%=U~5
int temp; HRA|q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x%B%f`]8
} GbI/4<)l}
} a7opCmL
} l/5
hp.
^cWnF0)j.
} oB7_O-3z
z$sT !QL~
快速排序: E1
2uZ$X
jP.dDYc
package org.rut.util.algorithm.support; ^\m![T\bX
At;LO9T3z
import org.rut.util.algorithm.SortUtil; gSj,E8-g
YmG("z
/** Kg]J/|0\
* @author treeroot sI2^Qp@O1
* @since 2006-2-2 ;_=&-mz
* @version 1.0 }@)[5N#A|
*/ tuX|\X
public class QuickSort implements SortUtil.Sort{ h";L
PA*5Bk="q
/* (non-Javadoc) |-H&o]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x+]"
*/ -Y8B~@]P?
public void sort(int[] data) { 7tp36 TE
quickSort(data,0,data.length-1); '"s@enD0 y
} x{n=;JD
private void quickSort(int[] data,int i,int j){ K
8O|?x]
int pivotIndex=(i+j)/2; 6]wIG$j
file://swap K=&>t6s<
SortUtil.swap(data,pivotIndex,j); k5)om;.w
q^nVN#
int k=partition(data,i-1,j,data[j]); -?a 26o%e
SortUtil.swap(data,k,j); <UCl@5g&
if((k-i)>1) quickSort(data,i,k-1); ?JUeuNs9
if((j-k)>1) quickSort(data,k+1,j); \M-OC5fQv
jEwIn1
} ;*J
/** \)e'`29;
* @param data \2z>?i)
* @param i
lhJ'bYI
* @param j y{Q
{'De
* @return d(K+);!
*/ tJmTBsn
private int partition(int[] data, int l, int r,int pivot) { dr"1s-D4IQ
do{ i#O SC5ZI
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UF|p';oom
SortUtil.swap(data,l,r); 05R@7[GWq
} y7<|_:00
while(l SortUtil.swap(data,l,r); d zMb5puH
return l; .)3 <Q}>
} e+|sSp A
_0I@xQj-
} zm# ?W
^rz_f{c]-
改进后的快速排序: [>9is=>o.
&&%H%9
package org.rut.util.algorithm.support; ~"bVL[
?A0)L27UE&
import org.rut.util.algorithm.SortUtil; >GuM]qn
#K&Gp-
/** |[lKY+26:{
* @author treeroot 4e
* @since 2006-2-2 +ai<
q>+
* @version 1.0 ,)io5nZF
*/ bMBLXk
public class ImprovedQuickSort implements SortUtil.Sort { MfkZ
d=^z`nt !R
private static int MAX_STACK_SIZE=4096; 4z)]@:`}z
private static int THRESHOLD=10; 1mJHued=6
/* (non-Javadoc) _dg\\c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m+9#5a-
*/ ^sZ,2,^
public void sort(int[] data) { ,u m|1dh
int[] stack=new int[MAX_STACK_SIZE]; ?cZlN!
`_h&glMJ,q
int top=-1; ,,TnIouy
int pivot; Z :gyz$9w
int pivotIndex,l,r; P2Y^d#jO
t,'<gI
stack[++top]=0; -qoH,4w
stack[++top]=data.length-1; (sj,[
'q.!|G2U
while(top>0){ kVL.PY\K
int j=stack[top--]; Ca\6vR
int i=stack[top--]; V.Mry`9-
%)n=x
ne
pivotIndex=(i+j)/2;
7Lt)nq-b
pivot=data[pivotIndex]; I:.s_8mH}
?Ob3tUz2
SortUtil.swap(data,pivotIndex,j); ]R *A
Xr{v~bf
file://partition 0$njMnB2l
l=i-1; SAz
r=j; F}zDfY\-
do{ 8i pez/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); svSVG:48
SortUtil.swap(data,l,r); n:X y6H
} @XVTU
while(l SortUtil.swap(data,l,r); m kexc~l
SortUtil.swap(data,l,j); W8<%[-r
{b{s<@?
if((l-i)>THRESHOLD){ HTtnXBJ)*H
stack[++top]=i; H>C=zo,oiC
stack[++top]=l-1; ctUp=po
} yHGADH0B
if((j-l)>THRESHOLD){ P* o9a
stack[++top]=l+1; NO3/rJ6-
stack[++top]=j; He)%S]RLk
} 5)E @F9N
[gB+C84%%
} u&NV,6Fj2[
file://new InsertSort().sort(data); b]y2+A.n
insertSort(data); )*[3Vq
} M_8{]uo
/** .u:GjL'$
* @param data 7 3m1
*/ :%.D78&
private void insertSort(int[] data) { }'.m*#Y
int temp; #F#%`Rv1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]tD]Wx%
} KSvE~h[#+
} :r[`.`
} ]oxZ77ciL
kl`W\t F
} 2|L&DF:G
w@b)g
归并排序: 2?5>o!C
99S^f:t
package org.rut.util.algorithm.support; !?XC1xe~R
:
'c&,oLY
import org.rut.util.algorithm.SortUtil; T|p"0b A
M{\I8oOg
/** *Uh!>Iv;
* @author treeroot 25T18&R
* @since 2006-2-2 1,~D4lD|
* @version 1.0 hc1N~$3!G
*/ U17d>]ka
public class MergeSort implements SortUtil.Sort{ 74u&%Rj
nEfK53i_
/* (non-Javadoc) 0erNc'e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IcEdG(
*/ phK/
public void sort(int[] data) { VQs5"K"
int[] temp=new int[data.length]; qLCR] _*
mergeSort(data,temp,0,data.length-1); SKtr tm
} =vPj%oLp'a
;
KA~Z5x;
private void mergeSort(int[] data,int[] temp,int l,int r){ z{6Z
11|
int mid=(l+r)/2; Zc yc*{DS
if(l==r) return ; B1gR5p 0
mergeSort(data,temp,l,mid); ==B6qX8T
mergeSort(data,temp,mid+1,r); cS$_\65
for(int i=l;i<=r;i++){ fOHxtHM
temp=data; CAlCDfKW}
} <$YlH@;)`a
int i1=l; 5^cCY'I
int i2=mid+1; K@2),(z
for(int cur=l;cur<=r;cur++){ H+#FSdy#
if(i1==mid+1) {_}I!`opr$
data[cur]=temp[i2++]; #G3<7PK
else if(i2>r) IgzQr >
data[cur]=temp[i1++]; Smh,zCc>s
else if(temp[i1] data[cur]=temp[i1++]; [;N'=]`
else y}
'@R$
data[cur]=temp[i2++]; 3%6?g*
} cl1T8vFM
} =D(j)<9$A
AX INThJ
} 6Zo}(^Ovz
+_!QSU,@
改进后的归并排序: W)/#0*7
=wJX0A|
package org.rut.util.algorithm.support; ;a/E42eN;
B?QIN]
import org.rut.util.algorithm.SortUtil; Sdo-nt
- LSWmrj
/** s~>}a
* @author treeroot cL ]1f
* @since 2006-2-2 aXVFc5C\
* @version 1.0 do_[&
*/ ks tIgcI
public class ImprovedMergeSort implements SortUtil.Sort { GyIV
Hby
l}
/F*
private static final int THRESHOLD = 10; #E?4E1bnB
I]575\bA
/* M:8R-c#![
* (non-Javadoc) ?[AD=rUC
* /z!%d%"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]]mJ']l
*/ w
xH7?tsf
public void sort(int[] data) { Q8NX)R
int[] temp=new int[data.length]; s%S
mergeSort(data,temp,0,data.length-1); _#niyW+?~
} oRFq@g
)4OxY[2J
private void mergeSort(int[] data, int[] temp, int l, int r) { j.Hf/vi`z
int i, j, k; "g|#B4'e
int mid = (l + r) / 2; ]lbuy7xj63
if (l == r)
2iOV/=+
return; -~0^P,yQ
if ((mid - l) >= THRESHOLD) =&]L00u.
mergeSort(data, temp, l, mid); &&+H+{_Q
else bsX[UF
insertSort(data, l, mid - l + 1); QY/w
if ((r - mid) > THRESHOLD) WY/}1X9.%
mergeSort(data, temp, mid + 1, r); L#J1b!D&<6
else +R &gqja
insertSort(data, mid + 1, r - mid);
;'|Ey
Wc#24:OKe3
for (i = l; i <= mid; i++) { $]d^-{|
temp = data; l-Z4Mq6*L
} =euni}7a
for (j = 1; j <= r - mid; j++) { N['.BN
temp[r - j + 1] = data[j + mid]; XwmL.Gg:]7
} siI;"?
int a = temp[l]; #a6iuO0I
int b = temp[r]; J zl6eo[;
for (i = l, j = r, k = l; k <= r; k++) { CrLrw T
if (a < b) { X8|,
data[k] = temp[i++]; zfU{Kd
a = temp; ;TYBx24vD'
} else { O-^Ma-}
data[k] = temp[j--]; 6Oq7#3]
b = temp[j]; Vksuu@cch
} XSRsGTCC=
} }7Uoh(d
} g#bRT*,L
V`- 9m$
/** )GpK@R]{
* @param data eFgA 8kY)
* @param l jp,4h4C^)
* @param i R_C)
*/ &yg|t5o
private void insertSort(int[] data, int start, int len) { dN q$}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); F8=+j_UGI
} gdc<ZYcM
} ?< +WG/(d
} /:
"1Z]@
} 7.Op<
\e*]Ls#jS
堆排序: .*oU]N%K=
W\3X=@|u)
package org.rut.util.algorithm.support; vsPu*[%
~ljXzD93Z
import org.rut.util.algorithm.SortUtil; 3fj4%P"
?,mmYW6TjB
/** XS#Qu=,-
* @author treeroot uRvP hkqm
* @since 2006-2-2 o!Zb0/AP)
* @version 1.0 Ud?Q%)X
*/ %b$>qW\*&
public class HeapSort implements SortUtil.Sort{ D*jM1w_`
vh^VxS
/* (non-Javadoc) K;?+8(H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /^ts9:
*/ c 9Mz]1@f
public void sort(int[] data) { ?uu*L6
MaxHeap h=new MaxHeap(); oH@78D0A
h.init(data); Q &8-\
for(int i=0;i h.remove(); HMXE$d=[
System.arraycopy(h.queue,1,data,0,data.length); *dQSw)R
} G|Ti4_w
/~1+i'7V.,
private static class MaxHeap{ sHj/;
dtDFoETz
void init(int[] data){ _a, s
)
this.queue=new int[data.length+1]; .-zom~N-?
for(int i=0;i queue[++size]=data; 4W75T2q#
fixUp(size); ]Wup/o
} 6tZI["\
} KNl$3nX
NEs:},)o
private int size=0; g)-te+?6
>P(.:_^p
private int[] queue; K/$KI7P
'/p4O2b,
public int get() { " bG2:
return queue[1]; !WlH'y-I
} lE;!TQj:X
(FV >m
public void remove() { \U0Q<ot/7
SortUtil.swap(queue,1,size--); P?<y%c<
fixDown(1); SbZ6t$"
} f);FoVa6
file://fixdown z:O8Ls^\T
private void fixDown(int k) { @EAbF>>
int j; "@kaHIf[
while ((j = k << 1) <= size) { %<5'=t'|-U
if (j < size %26amp;%26amp; queue[j] j++; jPeYmv]
if (queue[k]>queue[j]) file://不用交换 b>k y
break; -j(6;9"7]|
SortUtil.swap(queue,j,k); nN;u,}e
k = j; pAEx#ck
} I fir ,8
} iso4]>LF
private void fixUp(int k) { Ac6=(B
while (k > 1) { 5;?yCWc
int j = k >> 1; H]s.=.Ki
if (queue[j]>queue[k]) llDJ@
break; GILfbNcd
SortUtil.swap(queue,j,k); 3T
9j@N77
k = j; !k%#R4*>
} [lAp62i5
} K,]=6Rj
$(
)>g>%
} Bx!-"e
-di o5a
} ;jPXs
-M2yw
SortUtil: Q\)F;: |
2:R+tn(F
package org.rut.util.algorithm;
OSJ$d
\jA~9
import org.rut.util.algorithm.support.BubbleSort; M2|is ~
import org.rut.util.algorithm.support.HeapSort; tgaO!{9I?
import org.rut.util.algorithm.support.ImprovedMergeSort; Qd6F H2Pl
import org.rut.util.algorithm.support.ImprovedQuickSort; +V+a4lU14
import org.rut.util.algorithm.support.InsertSort; f)!Z~t &
import org.rut.util.algorithm.support.MergeSort; AS,%RN^.
import org.rut.util.algorithm.support.QuickSort; F?cK-.
import org.rut.util.algorithm.support.SelectionSort; BHw, 4#F1;
import org.rut.util.algorithm.support.ShellSort; OZT.=^:A
t
Pf40`@
/** jal-9NV)!
* @author treeroot :LTN!jj
* @since 2006-2-2 YP9^Bp{0
* @version 1.0 kLY^!
*/ {[(h[MW#
public class SortUtil { xpI wrJO
public final static int INSERT = 1; b\ PgVBf9
public final static int BUBBLE = 2; q =Il|Nb>
public final static int SELECTION = 3; 4=.so~9odX
public final static int SHELL = 4; $|@ r!/W
public final static int QUICK = 5; OH"XrCX7n
public final static int IMPROVED_QUICK = 6; h$=2 p5'-
public final static int MERGE = 7; P_dJZ((X
public final static int IMPROVED_MERGE = 8; CJ%I51F`X
public final static int HEAP = 9; qVPeB,kIz
4sM.C9W
public static void sort(int[] data) { J=L5=G7(
sort(data, IMPROVED_QUICK); +O5hH8<&b
} _FEFx
private static String[] name={ Z=
!*e~j@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zT[!o
j7
}; p8Q1-T3v
f-2c0Bi
private static Sort[] impl=new Sort[]{ 'n|5ZhXPB
new InsertSort(), s<Fl p
new BubbleSort(), T>GM%^h,7-
new SelectionSort(), KYP!Rs/j.
new ShellSort(), d %#b:(,
new QuickSort(), >3_Gw4S*H
new ImprovedQuickSort(), BZxvJQ
new MergeSort(), fT{Yg /j
new ImprovedMergeSort(), m4g$N)
new HeapSort() L-\GHu~)
}; go"Hf_
2"5v[,$1H
public static String toString(int algorithm){ :Yks|VJ1
return name[algorithm-1]; -^57oU
} qw8Rlws%
n(|^SH4$b
public static void sort(int[] data, int algorithm) { %IRi1EmN8
impl[algorithm-1].sort(data); o]:9')5^
} 4&f3%eTi
Rh |nP&6
public static interface Sort {
Z<phcqEi8
public void sort(int[] data); bTu9;(
} C
$JmzrE
)ANmIwmC#
public static void swap(int[] data, int i, int j) { [9 RR8
int temp = data; EZj9wd"u
data = data[j]; 3Y~>qGQwh
data[j] = temp; 9K&:V(gmw
} Faf&U%]*`
} ~nPtlrQa#*