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。 qxwD4L`S
插入排序: ^$O,Gy) V
i%_nH"h
package org.rut.util.algorithm.support; n47v5.Wn
b{d@:"
import org.rut.util.algorithm.SortUtil; t?kbN\,
/** n|iO)L\9aB
* @author treeroot ^RS`q+g
* @since 2006-2-2 yX8$LOjE
* @version 1.0 5SY( :!
*/ VJ(#FA2
public class InsertSort implements SortUtil.Sort{ w+owx(mN@
#PRkqg+|
/* (non-Javadoc) Ih0kdi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bjJ212J
*/ <yrl_vl{
public void sort(int[] data) { '%9e8C|
int temp; q>ps99[=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !n/"39KT
} a2un[$Jq`
} ]q@6&]9
} Q<pL5[00fD
&P{[22dQ
} O}#h^AU-BS
] Vbv64M3
冒泡排序: 4h~o>(Sq
O9W|&LAL
package org.rut.util.algorithm.support; "h}miVArS
`H6kC$^Ofx
import org.rut.util.algorithm.SortUtil; F&lvofy23
t1YVE%`w
/** /g!', r,
* @author treeroot qMe$Qr8
* @since 2006-2-2 9rmOf Jo:
* @version 1.0 It@.U|
*/ $/Q*@4t
public class BubbleSort implements SortUtil.Sort{ 7.l[tKh
jsG
epi9
/* (non-Javadoc) ZK@ENfG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H?>R#Ds-
*/ <OEu 4,~:
public void sort(int[] data) { ?8Hr
9
int temp; !8U\GR `
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ytnk^/Z1L
if(data[j] SortUtil.swap(data,j,j-1); AA
um1xl
} hIPU%
} .5zqpm
} (TV ye4Z
} 0)'^vJe
<k&Q"X:"
} }Z_w8+BZ
~sSlfQWMzy
选择排序: 0ZXG{Gp9S
tPHDnh^n]
package org.rut.util.algorithm.support; \]W*0t>s
f6ad@2
import org.rut.util.algorithm.SortUtil; >8nRP%r[5,
n
LZ
/** l(@UpV-
* @author treeroot G~I@'[ur
* @since 2006-2-2 Q!:J.J
* @version 1.0 iC`K$LY4W
*/ d[5?P?h')
public class SelectionSort implements SortUtil.Sort { /JfRy%31
G.,dP+i
/* q]Cmaf (
* (non-Javadoc) @<tkwu
* mRw &^7r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a8Jn.!
*/ +tNu8M@xFo
public void sort(int[] data) { Uzb~L_\Rmt
int temp; jLf. qf8qm
for (int i = 0; i < data.length; i++) { &C+pen)Z
int lowIndex = i; nxP>IfSA
for (int j = data.length - 1; j > i; j--) { eFUJASc
if (data[j] < data[lowIndex]) { 2#:h.8
lowIndex = j; 7W6tz\Y
} DDT)l+: XP
} $e7dE$eH
SortUtil.swap(data,i,lowIndex); %11&8Fp1s
} MkG3TODfHB
} X9#;quco@
1O0o18'
} r(IQ)\GR
^|?/
y=
Shell排序: Q&;dXE h
A7|!&fi
package org.rut.util.algorithm.support; 3eqnc),Z
)Ab!R:4
import org.rut.util.algorithm.SortUtil; vcnUb$%
k1HukGa
/** W|o LS
* @author treeroot mVN^X/L(y
* @since 2006-2-2 y1!c:&
* @version 1.0 {i)k# `
*/ ika/ GG
public class ShellSort implements SortUtil.Sort{ GQOz\ic
A=/|f$s+
/* (non-Javadoc) vlAYKtl3]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y-gSal
*/ :yo tpa
public void sort(int[] data) { F7wpGtt
for(int i=data.length/2;i>2;i/=2){ b/='M`D}#G
for(int j=0;j insertSort(data,j,i); %l!Gt"\xm
} JB~79Lsdz
} NWuS/Ur`9
insertSort(data,0,1); qr[H0f]
} pt&(c[
y|1,h}H^n
/** ({g7{tUy^H
* @param data Gk0f#;
* @param j <GI{`@5C
* @param i sG`:mc~0
*/ JW ;DA E<
private void insertSort(int[] data, int start, int inc) { \-Mzs 0R
int temp; #wL}4VN
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gwtR<2,p
} 3zU!5tg
} %]Gm
} RfVVAaI
)54;YK
} e#MEDjm/)g
lL.3$Rp;
快速排序: {k=H5<FV
p}%T`e=Z9
package org.rut.util.algorithm.support; JyY-@GF
\*Roa&<!
import org.rut.util.algorithm.SortUtil; l(Dkmt>^
V)CS,w
/** %y{#fZHc
* @author treeroot =Jd('r
* @since 2006-2-2 3A'vq2beM
* @version 1.0 FMCX->}$
*/ XS5*=hv:
public class QuickSort implements SortUtil.Sort{ G:NI+E"]
bLyU;
/* (non-Javadoc) e)kN%JqW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]5X=u(}
*/ #;59THdtPk
public void sort(int[] data) { <QoSq'g#,=
quickSort(data,0,data.length-1); #gzY _)E
} IKx]?0sS
private void quickSort(int[] data,int i,int j){ / E~)xgPM<
int pivotIndex=(i+j)/2; =c
3;@CO
file://swap Ww&~ZZZ {
SortUtil.swap(data,pivotIndex,j); .'QE o
!PX`sIkT
int k=partition(data,i-1,j,data[j]); bM[!E 8dF
SortUtil.swap(data,k,j); Ergh]"AD6-
if((k-i)>1) quickSort(data,i,k-1); Y;ytm
#=
if((j-k)>1) quickSort(data,k+1,j); ^a&-GhX;
#jAlmxN
} #flOaRl.
/** bkfwsYZx
* @param data ZSCZt&2v
* @param i I^>m-M.
* @param j eYd6~T[9
* @return / 4P+
*/ :td#zM
private int partition(int[] data, int l, int r,int pivot) { w8$rt
do{ R4+Gmx1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G9y
0;br
SortUtil.swap(data,l,r); v0762w
} $I40 hk
while(l SortUtil.swap(data,l,r); ]PQ] f*Ik>
return l; 'r;C(Gh6
} 0'T*l2Z`2
gFR9!=,/V%
} >\=~2>FCD
5g9lO]WDI
改进后的快速排序: 4FK|y&p4r
$89hkUuTu^
package org.rut.util.algorithm.support; Ig9yd S-.
]B'Ac%Rx
import org.rut.util.algorithm.SortUtil; am>X7
y5;l?v94
/** $2u^z=`b!%
* @author treeroot ;8z40cD
* @since 2006-2-2 i[obQx S94
* @version 1.0 U40adP? a
*/ Jj=0{(X
public class ImprovedQuickSort implements SortUtil.Sort { bvZTB<rA
KLqn`m`O;
private static int MAX_STACK_SIZE=4096; !vNZ-}
private static int THRESHOLD=10; 'BY{]{SL
/* (non-Javadoc) nO{@p_3mi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rv R,V
*/ ?M'_L']N[
public void sort(int[] data) { x2gnB@t
int[] stack=new int[MAX_STACK_SIZE]; W\xM$#)m
,VK! 3$;|
int top=-1; Ul@Jg
int pivot; '\yp}r'u
int pivotIndex,l,r; 0Y7b$~n'Y
VO"f=gFg
stack[++top]=0; WR'm<u
stack[++top]=data.length-1; ub^v,S8O
3m1]Ia-9
while(top>0){ (x7AV$N
int j=stack[top--]; P} =eR
int i=stack[top--]; ?U~}uG^
.{6?%lt
pivotIndex=(i+j)/2; >XzP'h
pivot=data[pivotIndex]; DoV<p?U
HD"Pz}k4
SortUtil.swap(data,pivotIndex,j); -~z]ut<Z
CS[[TzC=5
file://partition }2qmL$
l=i-1; V'vDXzk\
r=j; BPAz.K Q
do{ q0Rd^c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -]=-IiC#
SortUtil.swap(data,l,r); rN3i5.*/t
} sD V*k4
while(l SortUtil.swap(data,l,r); CRs gR)
SortUtil.swap(data,l,j); F$ a?} }
UO-<~DgH
if((l-i)>THRESHOLD){ $.Fti-5
stack[++top]=i; )3O0:]<H
stack[++top]=l-1; Y XC?q
} "X/cG9Lw
if((j-l)>THRESHOLD){ zPwU'TbF
stack[++top]=l+1; ['F,
stack[++top]=j; `V N $
S
} "]BefvE
_H#l&bL@C
} )u{)"m`&[J
file://new InsertSort().sort(data); "m^whHj
insertSort(data); [kc%+j<g
} pPztUz/.
/** `_L=~F8
* @param data F^iv1b
*/ F_Q,j]0
private void insertSort(int[] data) { RfPRCIo
int temp; I"*;fdm
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \<ohe w
} (`0dO8
} JM8s]&
} dt NHj/\
d\nBc6
} D}Jhg`9
$#V^CmW.
归并排序: k^A Yg!~
W!a~ #R/r-
package org.rut.util.algorithm.support; i?^Cc\gH
RZykwD(
import org.rut.util.algorithm.SortUtil; g=?KpI-pn0
{V&
2k9*
/** ,Mwyk1:xix
* @author treeroot ZB-+bY
* @since 2006-2-2 .F'fBT`$
* @version 1.0 D7Y5q*F
*/ <&'Y e[k
public class MergeSort implements SortUtil.Sort{ X8T7(w<0%f
R#Z1+&='
/* (non-Javadoc) FrSeR9b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a$p2I+lX
*/ !x9j~D'C`
public void sort(int[] data) { 9g"
1WZ!
int[] temp=new int[data.length]; ^'8T9N@U
mergeSort(data,temp,0,data.length-1); @Yua%n6]#D
} Is6<3eQ\x
l6.#s3I['
private void mergeSort(int[] data,int[] temp,int l,int r){ Ov{fO
int mid=(l+r)/2; bTzVmqGY
if(l==r) return ; 1m-"v:fT5D
mergeSort(data,temp,l,mid); lu@#)
mergeSort(data,temp,mid+1,r); (]BZ8GOx
for(int i=l;i<=r;i++){ *"E?n>b
temp=data; UV>^[/^O
} #&\hgsw/T
int i1=l; tK&.0)*=
int i2=mid+1; Z-m,~Hh
for(int cur=l;cur<=r;cur++){ SM:SxhrGt
if(i1==mid+1) [woR 9azC
data[cur]=temp[i2++]; Xq&x<td
else if(i2>r) zE VJ
data[cur]=temp[i1++]; 8uME6]m
i
else if(temp[i1] data[cur]=temp[i1++]; @URLFMFi
else lj"L Q(^
data[cur]=temp[i2++]; P=&J e?
} *VT@
} }I7/FqrD
LX.1]T*m`
} 6l#1E#]|
fSp(}'m2L
改进后的归并排序: `+b>@2D_
+j 5u[X
package org.rut.util.algorithm.support; &?3?8Q\
EmNB}\IYU
import org.rut.util.algorithm.SortUtil; V|NWJ7
F2yM2Ldx
/** x_Ki5~w5
* @author treeroot =$5[uI2
* @since 2006-2-2 r
@~T}<I
* @version 1.0 -"5x? \.{m
*/ o}5:vi]
public class ImprovedMergeSort implements SortUtil.Sort { Yfy6o6*:
$4kc i@.
private static final int THRESHOLD = 10; XKp %7;
1Qf21oN{
/* k>{i_`*
* (non-Javadoc) @1P1n8mH]
* s<qSelj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :o$ R@l
*/ +7<{yP6wU
public void sort(int[] data) { h~elF1dG
int[] temp=new int[data.length]; L{2\NJ"+u
mergeSort(data,temp,0,data.length-1); !?tWWU%P)
} #ITx[X89|
49
3ik
private void mergeSort(int[] data, int[] temp, int l, int r) { SPsq][5eR
int i, j, k; sXTt)J
int mid = (l + r) / 2; HH6b{f@^
if (l == r) }eb%"ZH4|
return; n:he`7.6O
if ((mid - l) >= THRESHOLD) k`js~/Xv
mergeSort(data, temp, l, mid); 0[D5]mcv
else )T#;1qNB
insertSort(data, l, mid - l + 1); ?9X#{p>q
if ((r - mid) > THRESHOLD) 'KQ]7
mergeSort(data, temp, mid + 1, r); W<2%J)N<
else uYL6g:]+ZC
insertSort(data, mid + 1, r - mid); )F? 57eh
P0Na<)\'Y!
for (i = l; i <= mid; i++) { !N,Z3p>Q
temp = data; 5 LX3.
} wRPBJ-C)
for (j = 1; j <= r - mid; j++) { UF<|1;'
temp[r - j + 1] = data[j + mid]; *ILS/`mdav
} ~1Tz[\H#R
int a = temp[l]; T-&CAD3 ,O
int b = temp[r]; ~N[hY1}X[
for (i = l, j = r, k = l; k <= r; k++) { CpS'2@6
if (a < b) { -7ct+3"J
data[k] = temp[i++]; /_,~dt
a = temp; j %TYyL-
} else { ^yK94U;<Gy
data[k] = temp[j--]; q22cp&gmX
b = temp[j]; Hh;w\)/%j
} }(E6:h;}~
} '! 1ts @
} ;~]&$2sk
e%bERds
/** CR934TE+
* @param data w#F+rh3
* @param l |@nvg>mu
* @param i e+y< a~N
*/ 4Bx1L+Cg
private void insertSort(int[] data, int start, int len) { Z(K [oUJx
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8fM}UZI
} @hzQk~Gdi
}
`4}!+fXQ
} Ynz^M{9)K
} 10#!{].#x
ts;_T..L
堆排序: ";s5It
sQJM 4'8f
package org.rut.util.algorithm.support; c;U\nC<Y
*~!xeL
import org.rut.util.algorithm.SortUtil; +ZRsa`'^
2Fx<QRz
/** 18[f_0@ #
* @author treeroot f=K1ZD
* @since 2006-2-2 X8Sk
* @version 1.0 MruWt*
*/ WKah$l
public class HeapSort implements SortUtil.Sort{ nNhN:?
Z$zUy|s[
/* (non-Javadoc) \)M5o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ysr{1! K
*/ ys#M*
{?
public void sort(int[] data) { eaX`S.!jR
MaxHeap h=new MaxHeap(); X3W)c&Pr
h.init(data); h*MR5qa
for(int i=0;i h.remove(); "[[fQpe4@
System.arraycopy(h.queue,1,data,0,data.length); e982IP
} ik$wS#1+L
ZC2C`S\xr
private static class MaxHeap{ 6km
u'vw
fykN\b
void init(int[] data){ xZ@Y`2A':
this.queue=new int[data.length+1]; 22BJOh
for(int i=0;i queue[++size]=data; ^7"%eWT`
fixUp(size); raqLXO!j
} 3$Is==>7
} I.8|kscM
0'py7
private int size=0; \^#1~Kx
DGd&x^C
private int[] queue; L//sJe
5ef&Ih.3
public int get() { k oHY
AF
return queue[1]; mr('zpkRq
} ^1~/FU
pM46I"
public void remove() { !r
LHPg
SortUtil.swap(queue,1,size--); Hzj*X}X#K
fixDown(1); $AXz/fGV
} %x927I>
file://fixdown O]Kb~jkd
private void fixDown(int k) { }TF<C!]
int j; hf?^#=k^
while ((j = k << 1) <= size) { ;! 9_5Ar%
if (j < size %26amp;%26amp; queue[j] j++; `S~u4+y]
if (queue[k]>queue[j]) file://不用交换 3P6'*pZ
break; &R5M&IwL
SortUtil.swap(queue,j,k); 3?O|X+$p
k = j; :?UIyN?
} f%|S>(
} }oN(nPxv9
private void fixUp(int k) { T^nX+;:|
while (k > 1) { +%<Jr<~W
int j = k >> 1; ;9I#>u
if (queue[j]>queue[k]) v
PGuEfz
break; K[kmfXKu
SortUtil.swap(queue,j,k); OeAPBhTmFj
k = j; z9+94<J
} D/:)rj14b
} IL\mFjZ'
i&HV8&KygN
} WuNu}Ibl}m
Dw#&x/G
} e{}o:r
_bd#C
SortUtil: PR'FSTg
]bR'J\Fwl
package org.rut.util.algorithm; d#d~t[=
*C:+N>
import org.rut.util.algorithm.support.BubbleSort; L_.}z)S[\
import org.rut.util.algorithm.support.HeapSort; 'pe0Q-
import org.rut.util.algorithm.support.ImprovedMergeSort; R/wSGP`W
import org.rut.util.algorithm.support.ImprovedQuickSort; s{,e^T
import org.rut.util.algorithm.support.InsertSort; /,>.${,;u
import org.rut.util.algorithm.support.MergeSort; X<QE]RZ
import org.rut.util.algorithm.support.QuickSort; J6%op{7/
import org.rut.util.algorithm.support.SelectionSort; ^KaMi_--
import org.rut.util.algorithm.support.ShellSort; Orb(xLChJ
kp6x6%{K\
/** M[{Cy[ta
* @author treeroot 7_3O]e[8
* @since 2006-2-2 *Vc=]Z2G^
* @version 1.0 Tk!b`9
*/ `o3d@Vc
public class SortUtil { FGH>;H@
public final static int INSERT = 1; M/DTD98'N
public final static int BUBBLE = 2; :3t])mL#
public final static int SELECTION = 3; h0eo:Ahi
public final static int SHELL = 4; m2! 7M%]GC
public final static int QUICK = 5; TkBBHg;
public final static int IMPROVED_QUICK = 6; y2U:( H:l!
public final static int MERGE = 7; ?qbp
public final static int IMPROVED_MERGE = 8; ^~aSrREo
public final static int HEAP = 9; |pgkl`
:L[6a>"neE
public static void sort(int[] data) { vjb?N
sort(data, IMPROVED_QUICK); m#ie{u^
} :mrGB3x{
private static String[] name={ /trc&V
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A;!FtD/
}; )2$_:Ek
GVM#Xl}w9
private static Sort[] impl=new Sort[]{ 5ZcnZlOOQ
new InsertSort(), 3k<#;(
new BubbleSort(), (=/F=,w
new SelectionSort(), Ueeay^zN
new ShellSort(), x-pMT3m\D#
new QuickSort(), >gZz`CH
new ImprovedQuickSort(), XZInu5(
new MergeSort(),
xAjQW=
new ImprovedMergeSort(), 'O`3FI
new HeapSort() )|{{}w~`
}; @5y(>>C}8%
injmP9ed
public static String toString(int algorithm){ nB5[]x'
return name[algorithm-1]; *[H+8/n_
} LU{Z
C6VoOT)\
public static void sort(int[] data, int algorithm) { kpH;D=;
impl[algorithm-1].sort(data); !Ia"pNDf
} j;v%4G
L0kNt
&di
public static interface Sort { 'y?|shV{]
public void sort(int[] data);
i6d$/yP"
} L:M9|/
J31M:<
public static void swap(int[] data, int i, int j) { >bN~p
int temp = data;
nvPE
N
data = data[j]; ~vGtNMQg
data[j] = temp; @vYmkF`
} u-{l,p_H
} eeU$uR