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。 m9:ah<
插入排序: 0hGmOUO
?vAhDD5
package org.rut.util.algorithm.support; eQ8t.~5;-
;sAGTq
import org.rut.util.algorithm.SortUtil; wik<#ke
/** %3#C0%{x
* @author treeroot &}2@pu[S?7
* @since 2006-2-2 >,3 uu}s
* @version 1.0 to&,d`k=-
*/ {!qnHv\S
public class InsertSort implements SortUtil.Sort{ Ma$~B0!;s
l*&N<Yu
/* (non-Javadoc) "qR, V9\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kn@#5MC
rU
*/ 2=8PA/
public void sort(int[] data) { H2#o
X
int temp; 9Scg:}Nj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KZZ Y9
} ,~ZD"'*n6g
} - PSgBH[
} ku]?"{Xx
URbB2
Bi
} kI@<H<
IHd
W!q
冒泡排序: "P(obk
K#X/j'$^
package org.rut.util.algorithm.support; v)_FiY QQ6
QdQ1+*/+U
import org.rut.util.algorithm.SortUtil; Y.Z:H!P);$
K@cWg C
/** ~KkC089D
* @author treeroot b$#b+G{y
* @since 2006-2-2 +BL4 6Bq
* @version 1.0 X"_
^^d-
*/ "zd_eC5
public class BubbleSort implements SortUtil.Sort{ 0!lWxS0#=
][?J8F
/* (non-Javadoc) QOg >|"KL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `m<O!I"A
*/ >|kD(}Axf
public void sort(int[] data) { `kQosQV
int temp; gz[3 xH~
for(int i=0;i for(int j=data.length-1;j>i;j--){ J-dB
if(data[j] SortUtil.swap(data,j,j-1); g([:"y?
} !\BZ_guz
} YJ"D"QD
} j"h/v7~
} [*zg? ur
JOt(r}gU
} Y01!D"{\
SiX<tj#HH\
选择排序: ug2W{D
ycc G>%>r
package org.rut.util.algorithm.support; p2t04p!
H2Wlgt
import org.rut.util.algorithm.SortUtil; C7NSmZ
z_ycH%p
/** 0: hv6Ge^
* @author treeroot M;ADL|
* @since 2006-2-2 ~:T@SrVI
* @version 1.0 b=:u d[h
*/ X]@"ZV[
public class SelectionSort implements SortUtil.Sort { o|z@h][(l(
={oNY.(Q
/* $B%KkD
* (non-Javadoc) x$BNFb%I1
* jUA~}DVD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]&Y^
*/ 5{V"!M+<
public void sort(int[] data) { ;j1E 6
int temp; [I4MK%YQ
for (int i = 0; i < data.length; i++) { ~d]v{<3
int lowIndex = i; jD9u(qAlH
for (int j = data.length - 1; j > i; j--) { Y&O2;q/B
if (data[j] < data[lowIndex]) { /^nIOAeE
lowIndex = j; OR~ui[w
} S5 q1Mn
} lRg?||1ik
SortUtil.swap(data,i,lowIndex); eZT8gKbjJ)
} \N0vA~N.
} t
sUu
z6E =%-`
} <.4(#Ebd
Bgc]t
Shell排序: eP>_CrJb
>;c);|'}q
package org.rut.util.algorithm.support; [q[37;ZEQ
g_syGQ\
import org.rut.util.algorithm.SortUtil; ={P`Tve
[ZSC]w^
/** Dbn344s
* @author treeroot #'s$6gT=
* @since 2006-2-2 kpn|C 9r
* @version 1.0 9Tt%~m^
*/ [h;I)ug[o(
public class ShellSort implements SortUtil.Sort{ \~%+)a%%
wX]$xZ!s
/* (non-Javadoc) gUx}vE-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g-d{"ZXd J
*/ 96V8R<
public void sort(int[] data) { aH_c84DS
for(int i=data.length/2;i>2;i/=2){ lY
tt|J
for(int j=0;j insertSort(data,j,i); G'/GDN^j
} +M
I{B="7.
} 4DCh+|r
insertSort(data,0,1); nahq O|~
} AtCT
BVb^ xL
/** LsERcjwwK
* @param data "PI;/(kR
* @param j o( zez
* @param i {\1bWr8!U
*/ hTn"/|_SW
private void insertSort(int[] data, int start, int inc) { e*}zl>f
int temp; Ie^Ed`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F:ycV~bE
} a4^hC[a
} [6mK<A,/
} rueaP
"{D/a7]lC
} JL87a^ro
WkA47+DsV
快速排序: (t@)`N{
h76j|1gI
package org.rut.util.algorithm.support; 9t\14tVwx
o-RZwufZ`
import org.rut.util.algorithm.SortUtil; [y`Gp#
EZB0qZIp
/** ~&)\8@2
* @author treeroot '69)m~B0a
* @since 2006-2-2 W$hCI)m(
* @version 1.0 *P*~CHx>
*/ :[n~(~7?
public class QuickSort implements SortUtil.Sort{ ,nteIR'??
u?72]?SM
/* (non-Javadoc) /r~2KZE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <p b
*/ _D4qnb@
public void sort(int[] data) { pE<a:2J
quickSort(data,0,data.length-1); .2@T|WD!Ah
} 49*f=gpGj2
private void quickSort(int[] data,int i,int j){ JE9v+a{7
int pivotIndex=(i+j)/2; ZNw|5u^N
file://swap )m7%cyfC
SortUtil.swap(data,pivotIndex,j); x!GDS>
o!UB x<4
int k=partition(data,i-1,j,data[j]); /(s |'"6
SortUtil.swap(data,k,j); Q"FN"uQ}x
if((k-i)>1) quickSort(data,i,k-1); ivo><"Y(r
if((j-k)>1) quickSort(data,k+1,j); M8WjqTq
*x2!N$b
} fs#9~b3
/** :.g/=Q(T~
* @param data 8` +=~S
* @param i o4FHR+u<M
* @param j ,byc!P
* @return <<d #
*/ A Qjv?
4)T
private int partition(int[] data, int l, int r,int pivot) { R5=J :o
do{ yP$esDP
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (9%?ik
SortUtil.swap(data,l,r); =_k
} 8wkhbD|;
while(l SortUtil.swap(data,l,r); r[Pp[g-J
return l; 3\m!
} Lld45Bayb
++,I`x+p
} A` _dj}UF
6t; ;Fz
改进后的快速排序: q("XS
$5 G(_
package org.rut.util.algorithm.support; Iz+%wAZ|B6
^oPFLez56
import org.rut.util.algorithm.SortUtil; _=I1
'hr_g* i
/** M%ecWr!tj
* @author treeroot !8UIyw
* @since 2006-2-2 +C!GV.q[
* @version 1.0 QYo04`Rl
*/ WZ?>F
public class ImprovedQuickSort implements SortUtil.Sort { }TMO>eB'
N@PwC(
private static int MAX_STACK_SIZE=4096; p}pRf@(`\
private static int THRESHOLD=10; .S,E=
/* (non-Javadoc) +g?uvXC&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > .NLmzUX
*/ e+BZoK ^
public void sort(int[] data) { ZOPK
int[] stack=new int[MAX_STACK_SIZE]; I=&i &6v8G
H3$py|}lL
int top=-1; PR|z -T
int pivot; :|V650/
int pivotIndex,l,r; ?QffSSj[s
b(N\R_IQ~
stack[++top]=0; Wx-0Ip'9
stack[++top]=data.length-1; !~C%0{9+u@
Nxt:U{`T'
while(top>0){ _}p[(sTV
int j=stack[top--]; Y({
R\W|
int i=stack[top--]; k#pO+[ x
Mu/(Xp6 2
pivotIndex=(i+j)/2; If'2
m_
pivot=data[pivotIndex]; L3\#ufytb
ZbT$f^o}M]
SortUtil.swap(data,pivotIndex,j); *yT>
h'em?fN(
file://partition ')q4d0B`"
l=i-1; Ci-Ze j
r=j; FLG"c690
do{ BJ5MCb.w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $`GlXiV
SortUtil.swap(data,l,r); *CXc{{
} ^dLu#,;
while(l SortUtil.swap(data,l,r); MkMDI)Y|
SortUtil.swap(data,l,j); $Z)u04;&@
+r"}@8/\1
if((l-i)>THRESHOLD){ b|.Cqsb
stack[++top]=i; 2R,}
j@
stack[++top]=l-1; ,!Q nh:
} &=)O:Jfa
if((j-l)>THRESHOLD){ q
n-f&R
stack[++top]=l+1; e
bpt/q[
stack[++top]=j; oQ-m
} "[7-1} l
$i+@vbU6
} dz+!yE\f$
file://new InsertSort().sort(data); RdD>&D$I
insertSort(data); `,SL\\%u
} ,*W~M&n"m
/** ,&@GxiU
* @param data *_I`{9~'
*/ |Io:D:
private void insertSort(int[] data) { U)f('zD
int temp; bu6Sp3g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A{;"e^a-^l
} z<9C-
} *;}xg{@
} D*2*FDGI
s i2@k
} 3);P!W4>
Mrgj*|
归并排序: 2F*>&n&Db7
'|=Pw
package org.rut.util.algorithm.support; 36{OE!,i
;SI (5rS?
import org.rut.util.algorithm.SortUtil; eEBNO*2
OF`J{`{r
/** xz0t8`NoN
* @author treeroot ) ??N]V_U
* @since 2006-2-2 ;MNUT,U
* @version 1.0 c!
kr
BS
*/ fx+_;y
public class MergeSort implements SortUtil.Sort{ KF#^MEw%
I1m[M?
/* (non-Javadoc) @P~%4:!Hr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?&9=f\/P
*/ *K_8=TIA*
public void sort(int[] data) { 0IqGy}+VU
int[] temp=new int[data.length]; d6*84'|!
mergeSort(data,temp,0,data.length-1); >6yQuB
} ^G`6Zg;
l4i51S"
private void mergeSort(int[] data,int[] temp,int l,int r){ GdUsv
int mid=(l+r)/2; -){6ynqv
if(l==r) return ; ,gZp/ yJ;
mergeSort(data,temp,l,mid); 'gor*-o:wu
mergeSort(data,temp,mid+1,r); Kd 1=mC
for(int i=l;i<=r;i++){ 3'x>$5W
temp=data; v@Eb[7Kq/1
} 6M&ajl`o
int i1=l; PEEaNOk
1b
int i2=mid+1; A z@@0
for(int cur=l;cur<=r;cur++){ :|kO}NGM
if(i1==mid+1) ;b65s9n^b
data[cur]=temp[i2++]; *w0|`[P+h
else if(i2>r) xP~GpVhLF
data[cur]=temp[i1++]; ds+K7B$
else if(temp[i1] data[cur]=temp[i1++]; \(
V1-,
else I,#E`)
data[cur]=temp[i2++]; i[9gcL"
} \?t8[N\_[(
} @`
Pn<_L
`lE&:)
} I~F&@
mD7NQ2:wA
改进后的归并排序: `AE6s.p?
\^,Jh|T
package org.rut.util.algorithm.support; >;Oa|G
C)FO:lLr\
import org.rut.util.algorithm.SortUtil; #2i$:c~
lz>00B<Z
/** Bj4c_YBte
* @author treeroot vkJyD/;=
* @since 2006-2-2 `:7r5}(^
* @version 1.0 W=A0+t%XC
*/ Tv7W)?3h
public class ImprovedMergeSort implements SortUtil.Sort { K_Y{50#
2~hdJ/
private static final int THRESHOLD = 10; wN'S+4
@1'OuX^
/* Z?xaXFm_
* (non-Javadoc) _+P*XY5
* 0
N7I:vJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~SBW`=aP}
*/ 9;XbyA]
public void sort(int[] data) { MVzj7~+
int[] temp=new int[data.length]; p_BG#dRM
mergeSort(data,temp,0,data.length-1); ^PFiO 12
} V C VqUCc
KO8vUR*2R
private void mergeSort(int[] data, int[] temp, int l, int r) { xib}E[-l#
int i, j, k; p'^}J$
int mid = (l + r) / 2; yB7si(,1>
if (l == r) =%I[o=6
return; U%r{{Q1
if ((mid - l) >= THRESHOLD) 2X' H^t]7
mergeSort(data, temp, l, mid); )MI w/
else HLz<C
insertSort(data, l, mid - l + 1); /Z*$k{qIR&
if ((r - mid) > THRESHOLD) L|APX y]>
mergeSort(data, temp, mid + 1, r); r)>'cjx/
else SE(<(w
insertSort(data, mid + 1, r - mid); *IbDA
Y<POdbg
for (i = l; i <= mid; i++) { z5({A2q
temp = data; +7OE,RoQ
} W:n\,P
for (j = 1; j <= r - mid; j++) { 4J,6cOuW4
temp[r - j + 1] = data[j + mid]; Mfz(%F|<
} o7+<sL
int a = temp[l]; bS:$VyH6
int b = temp[r]; jo"+_)]
for (i = l, j = r, k = l; k <= r; k++) { Ke@Bf
if (a < b) { ]b}3f<
data[k] = temp[i++]; < q(i(%
a = temp; yD3vq}U!
} else { 'p[6K'Uq5
data[k] = temp[j--]; l]DRJ
b = temp[j]; =>Ae]mi7
} Kc
r)W
} h\#4[/
} C`Vuw|Xl
~hk!N!J\
/** QP<P,Bi~
* @param data rA<J^dX=C
* @param l :FSg%IUX
* @param i :W&klUU"
*/ GPAC0K^p
private void insertSort(int[] data, int start, int len) { vr47PM2al
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (.oDxs()I
} FLPN#1
} Th,]nVsGs~
} E.$//P n|1
} @:hWahMy
W{ozZuo
堆排序: AS0(NlV
_kOuD}_|
package org.rut.util.algorithm.support; i-0AcN./p
T06w`'aL
import org.rut.util.algorithm.SortUtil; <5]_u:
4mBM5Tv
/** UlN}SddI9
* @author treeroot /Y\q&}
* @since 2006-2-2 -{eiV0<^
* @version 1.0 -=rGN"(M
_
*/ /s)It
public class HeapSort implements SortUtil.Sort{ 25, [<Ao
;ACeY
/* (non-Javadoc) {Q K9pZB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k]& I(VQ"
*/ Obc,
public void sort(int[] data) { N]c:8dOj
MaxHeap h=new MaxHeap(); h;K9}w
h.init(data); :1iXBG\
for(int i=0;i h.remove(); <9=RLENmY"
System.arraycopy(h.queue,1,data,0,data.length); .
VI
#
} Jl"DMUy[kW
Tig6<t+Q
private static class MaxHeap{ ,,9vk \
%u|Qh/?7
void init(int[] data){ QIN# \
this.queue=new int[data.length+1]; Grd9yLF
for(int i=0;i queue[++size]=data; `n|k+tsC
fixUp(size); IfRrl/!nw
} %ULd_ES^
} "J
>,
Hr9
&:+_{nc,
private int size=0; Z.>?Dt
!})3Fb
private int[] queue; I$i1o#H
Pt;\]?LVrD
public int get() { mW_A3S5
return queue[1]; Q%GLT,f1.
} ^eYJ7&t
kr1^`>O5
public void remove() { d7c m?+
SortUtil.swap(queue,1,size--); Z[j-.,Qu
fixDown(1); )>=|oY3
} )^^}!U#|e
file://fixdown ~>$(5s2
private void fixDown(int k) { 10/3 -)+
int j; !q PUQ+
while ((j = k << 1) <= size) { J_|>rfW
if (j < size %26amp;%26amp; queue[j] j++; wVs |mG"
if (queue[k]>queue[j]) file://不用交换 -gS/
break; ]}0+7Q
SortUtil.swap(queue,j,k); / dn]`Ge)
k = j; R91u6r#
}
D3 E!jQ1
} 2gjA>ET`N
private void fixUp(int k) { 483vFLnF
while (k > 1) { QaEXk5>e
int j = k >> 1; KQqQ@D&n
if (queue[j]>queue[k]) tX}Fb0y
break; `+@%l*TQ
SortUtil.swap(queue,j,k); [c6_6q As
k = j; -3b0;L&4>x
} Ki@8
} ]7"mt2Q=3
Vk~}^;`Y
} G}~b
d{GXFT;0
} WI'csM;M#
ma*9O |v^
SortUtil: 4'; ['
X}bgRzj
package org.rut.util.algorithm; DFjkp;`1
tbk9N( R
import org.rut.util.algorithm.support.BubbleSort; 8@Km@o]?
import org.rut.util.algorithm.support.HeapSort; J5rR?[i{
import org.rut.util.algorithm.support.ImprovedMergeSort; E3KPJ`=!*"
import org.rut.util.algorithm.support.ImprovedQuickSort; ,9M \`6
import org.rut.util.algorithm.support.InsertSort; `0 F"zu
import org.rut.util.algorithm.support.MergeSort; %BHq2~J
import org.rut.util.algorithm.support.QuickSort; h;unbz
import org.rut.util.algorithm.support.SelectionSort; CGg6n CB
import org.rut.util.algorithm.support.ShellSort; D{z=)'/F
qC|re!K
/** aA
yFu_
* @author treeroot ->#7_W
* @since 2006-2-2 @o^sp|k !
* @version 1.0 Vgm{=$
*/ B'0Il"g'
public class SortUtil { ,>jm|BTD {
public final static int INSERT = 1; (}qLxZ/U
public final static int BUBBLE = 2; V[#lFl).
public final static int SELECTION = 3; Ul@'z|
public final static int SHELL = 4; $1@{Zz!S
public final static int QUICK = 5; Hm^p^,}_x
public final static int IMPROVED_QUICK = 6; {S&&X&A`v
public final static int MERGE = 7; *AN#D?X_
public final static int IMPROVED_MERGE = 8; |m EJJg`"7
public final static int HEAP = 9; %yrP: fg/
NAocmbfNz
public static void sort(int[] data) { QY fS-
sort(data, IMPROVED_QUICK); !c`1~a!
} jKQP0 t-
private static String[] name={ :{6[U=O
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5Q'R5]?h
}; =UP)b9*h
4* hmeS"
private static Sort[] impl=new Sort[]{ _1JvA-
new InsertSort(), hg>YOf&RG
new BubbleSort(), ! O>mu6:Rf
new SelectionSort(), Yr,1##u
new ShellSort(),
^~ I
new QuickSort(), &\K#UVDyhh
new ImprovedQuickSort(), Bms?`7}N
new MergeSort(), ,?f(~<Aj
new ImprovedMergeSort(), sR0nY8@F
new HeapSort() WL~`L!_. A
}; K=>/(sWiq
U5PCj ]-Xt
public static String toString(int algorithm){ 8UZEC-K
return name[algorithm-1]; Te/)[I'Tn
} Y+7v~/K=
Q'Tn+}B&
public static void sort(int[] data, int algorithm) { /][U$Q;Ke
impl[algorithm-1].sort(data); ljCgIfZ_4
} w/<hyEpxg
n#fg7d%
public static interface Sort { 0?sp
public void sort(int[] data); 8YJ({ Ou_
} Y#5S;?bR
]_,~q@r$
public static void swap(int[] data, int i, int j) { *]=)mM#
int temp = data; m
;vNA
data = data[j]; 5f5`7uVJF
data[j] = temp; s_8!x
} 3IxT2@H)
} ]7O?c=