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。 2cwJ);Eg2
插入排序: iba8G]2
R,fAl"wMu
package org.rut.util.algorithm.support; "bz.nE*
03_M+lv
import org.rut.util.algorithm.SortUtil; AW'$5NF>
/** Gzwb<e
y
* @author treeroot .*Bd'\:F/q
* @since 2006-2-2 ~%h&ELSw
* @version 1.0 J ~KygQ3%
*/ v5&W)F
public class InsertSort implements SortUtil.Sort{ KL*+gq0k
ge1U1o
/* (non-Javadoc) (hh^?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AmQsay#I_
*/ P<;Puww/
public void sort(int[] data) { EKS?3z%!
int temp; -J0OtrZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B5+$VQ
} 9i
D&y)$"
} v^;vH$B
} ..w$p-1
"'XYW\bI
} {1+meE
":qS9vW
冒泡排序: }h* j{b,
QU(Lv(/O
package org.rut.util.algorithm.support; b`ksTO`}x
HBs
6:[q
import org.rut.util.algorithm.SortUtil; `R!2N4|;
FEX67A8/;
/** ;9q$eK%d
* @author treeroot /O`R9+;
* @since 2006-2-2 @Fzw_qr
M
* @version 1.0 ,@I\'os
*/ GIfs]zVr`
public class BubbleSort implements SortUtil.Sort{ Z-yoJZi
5kA D vi.
/* (non-Javadoc) >U?#'e{qW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !)}D_9{
*/ 1:_}`x=hM
public void sort(int[] data) { D
|fo:Xp,
int temp; Vt-V'`Y
for(int i=0;i for(int j=data.length-1;j>i;j--){ eu?P6>urA
if(data[j] SortUtil.swap(data,j,j-1); [{#n?BT
} P.(z)!]
} HGi%b5:<=M
} t3C#$>
} q^7=/d8
9$}>O]
} :XTxrYt28
;F"Tu
选择排序: GaV OMT
.y0u"@iF
package org.rut.util.algorithm.support; Yv2L0bUo:
(cI@#x
import org.rut.util.algorithm.SortUtil; wM#l`I
3>=G-AH/$K
/** SpOSUpl%
* @author treeroot %e_){28 n
* @since 2006-2-2 Mc,p]{<<AV
* @version 1.0 b,'rz04^
*/ QUg<~q)Oq
public class SelectionSort implements SortUtil.Sort { Hl*#iUq
lTFo#p_(
/* "{d[V(lE"
* (non-Javadoc) [4@@b"H
* 8ZJ6~~h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z=<D`
*/ FI)0.p
public void sort(int[] data) { )bpdj,
int temp; z6h/C{
for (int i = 0; i < data.length; i++) { <y"lL>JR
int lowIndex = i; - s2Yhf
for (int j = data.length - 1; j > i; j--) { Q5IN1
^=HF
if (data[j] < data[lowIndex]) { QUF1_Sa
lowIndex = j; " LhXR
} |/Y!R>El
} }:1qK67S
SortUtil.swap(data,i,lowIndex); y+izC+
} 1{
ehnH
} L Z3=K`gj
>feeVk
} 8^R~qpg%
`_"?$ v2F
Shell排序: C\|HN=2eh
2d<`dQY{l3
package org.rut.util.algorithm.support; Xob(4
D2io3Lo$ov
import org.rut.util.algorithm.SortUtil; }/g1
v[a4d&P
/** cAyR)Y!I
* @author treeroot ,M7sOp6}
* @since 2006-2-2 h\'GL(?DBI
* @version 1.0 Yp 6;Y7^
*/ qt/syF&s
public class ShellSort implements SortUtil.Sort{ pPo?5s
'e3y|
/* (non-Javadoc) u>&\@?(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H; TmG<S
*/ l4U& CA y
public void sort(int[] data) { $2]1 3j
for(int i=data.length/2;i>2;i/=2){ Ou2H~3^PL
for(int j=0;j insertSort(data,j,i); BGOI$,
} Rt7}e09HV
} *Vfas|3hZI
insertSort(data,0,1); z$ysp!
} ?#}=!$p
:m8ED[9b
/** ||`w MWq
* @param data ><LIOFqsS
* @param j Z<jRZH*L
* @param i {N)\It
*/ :1_hQeq
private void insertSort(int[] data, int start, int inc) { =e$
#m;
int temp; zIF &ZYP
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [w=x 0J&
} `Kym{og
} -B4uK
} C$*`c6R
[7<X&Q
} zmr=iK
^+`vh0TPQ
快速排序: &@dMk4BH<
,Lv}Xku
package org.rut.util.algorithm.support; c::x.B"w
Lom%eoH)
import org.rut.util.algorithm.SortUtil; 32~Tf,
e"r}I!.
/** /lr RbZ
* @author treeroot ujz
%0Mq;
* @since 2006-2-2 + W@r p#
* @version 1.0 Z6D4VZVF
*/ ^{6Y7T]
public class QuickSort implements SortUtil.Sort{ FT|*~_@
iM8hGQ`
/* (non-Javadoc) zNE!m:s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /4_}wi\
*/ *N>Qj-KAM_
public void sort(int[] data) { =7e8N&-nv
quickSort(data,0,data.length-1); ^]U2Jd
} !-N!80
private void quickSort(int[] data,int i,int j){ iS=T/<|?
int pivotIndex=(i+j)/2; 30DpIkf
file://swap /;OJ=x3i
SortUtil.swap(data,pivotIndex,j); N"r ;d+LTL
'/sc `(`:0
int k=partition(data,i-1,j,data[j]); m9L+|r
SortUtil.swap(data,k,j); H~ks"D1
if((k-i)>1) quickSort(data,i,k-1); M<ad>M
if((j-k)>1) quickSort(data,k+1,j); l$zNsf.
,1~Zqprn
} >F+:ej
/** o8s&n3mY}y
* @param data `4k;`a
* @param i
A:D\!5=
* @param j V ?_%Y<|L
* @return LL[+QcH
*/ +ixDB0"\
private int partition(int[] data, int l, int r,int pivot) { 3\4Cg()
do{ c'G\AbUVjE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]6:5<NW
SortUtil.swap(data,l,r); >p<(CVX[
} SN]/~>/
while(l SortUtil.swap(data,l,r); @W.`'b-
return l; :+R5"my
} dt5gQ9(B
wSAm[.1i
} Xrz0ch
R=e`QMq
改进后的快速排序: Q'8v!/"}p{
?-i|f_`
package org.rut.util.algorithm.support; kkJg/:g
jV<LmVcZY
import org.rut.util.algorithm.SortUtil; rW`F|F%
UoLO#C0i
/** #e|eWi>
* @author treeroot iEU(1?m2-
* @since 2006-2-2 ze4/XR
* @version 1.0 3YLnh@-
*/ mdZELRu
public class ImprovedQuickSort implements SortUtil.Sort { qnA:[H;F
#-@{ rgH
private static int MAX_STACK_SIZE=4096; JfVayI=
private static int THRESHOLD=10; .1pEq~>
/* (non-Javadoc) yr=r?h}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VKs\b-1
*/ JBwTmOvQ
public void sort(int[] data) { =?f}h{8x>
int[] stack=new int[MAX_STACK_SIZE]; ,h>w %
kEXcEF_9P
int top=-1; p0tv@8C>
int pivot; h)<R#xw
int pivotIndex,l,r; p/:5bvA
c8'8DM
stack[++top]=0; .Gv~e!a8
stack[++top]=data.length-1; Ym6ec|9;
(8*lLZ
while(top>0){ `j(+Y
int j=stack[top--]; T2->
int i=stack[top--]; $?s^HKF~
s{IoL_PJP
pivotIndex=(i+j)/2; _4W#6!
pivot=data[pivotIndex]; srSTQ\l4
T9$U./69-L
SortUtil.swap(data,pivotIndex,j); kDz.{Ih
UP`q6]P
file://partition "/"qg
l=i-1; ;CvGIp&y
r=j; ~H$XSNPi
do{ p']AXJ`Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]S:@=9JB'
SortUtil.swap(data,l,r); H|!s.
} j~{2fd<>
while(l SortUtil.swap(data,l,r); i f"v4PHq
SortUtil.swap(data,l,j); a2 SQ:d
68)^i"DM<
if((l-i)>THRESHOLD){ l6WcnJ
stack[++top]=i; {L=[1
stack[++top]=l-1; P~ykC{nD
} };j&)M
if((j-l)>THRESHOLD){ esHiWHAC
stack[++top]=l+1; x L BG}C
stack[++top]=j; |")x1'M
} `u}x:f !
#.><A8J
} 9?:S:Sq
file://new InsertSort().sort(data); J#kdyBmuO
insertSort(data); w*
I+~o-
} c]]F`B
/** s6D-?G*u%8
* @param data
j{^(TE
*/ s/^k;qw
private void insertSort(int[] data) { kmoJ`W} N
int temp; Z])_E6.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n,F00YR
} Chua>p!$g
} $ {+.1"/[
} zfZDtKq
m=9N^_
} H6I #Xj
}"-r;i
归并排序: | rvr Sab)
c|R/,/
package org.rut.util.algorithm.support; jQb D2x6(
9PJDT]
import org.rut.util.algorithm.SortUtil; Z C93C7lJ
Kzb@JBIF
/** 9X%Klm 5w
* @author treeroot @5wg' mM
* @since 2006-2-2 Ig<p(G.;}
* @version 1.0 E8i:ER $$7
*/ p[)<d_
public class MergeSort implements SortUtil.Sort{ eqR#`
uI2'jEjO
/* (non-Javadoc) f*],j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (HI%C@e9
*/ _Pkh`}W:
public void sort(int[] data) { 9qDGxW
'1
int[] temp=new int[data.length]; Dkb&/k:)
mergeSort(data,temp,0,data.length-1); bw\=F_>L
} (Pd>*G\
zl\#n:|
private void mergeSort(int[] data,int[] temp,int l,int r){ :#}`uR,D/
int mid=(l+r)/2; [S:)UvB
if(l==r) return ; {*U:Wm<
mergeSort(data,temp,l,mid); cnthtv+(~
mergeSort(data,temp,mid+1,r); kKM%
for(int i=l;i<=r;i++){ b..$5
temp=data; Z-|C{1}A
} \DqxS=o;
int i1=l; vI'>$
int i2=mid+1; lc-|Q#$3$
for(int cur=l;cur<=r;cur++){ X t =bc
if(i1==mid+1) E<uOk
data[cur]=temp[i2++]; QZr<=}
else if(i2>r) 9C;Y5E~'L
data[cur]=temp[i1++]; uw=Ube(
else if(temp[i1] data[cur]=temp[i1++]; ?vFh)U
else k_>{"Rc
data[cur]=temp[i2++]; !h!9SE
} ^ kvH/ Y&
} MjB[5:s
>e;STU
} Jt6J'MOq
bFezTl{M
改进后的归并排序: 5V~p@vCx
A=UIN!
package org.rut.util.algorithm.support; Fz&ilB
0@lC5-=
import org.rut.util.algorithm.SortUtil; 1fv~r@6s
i[{]
LiP
/** yrAzD=
* @author treeroot q-%KfZ@(|
* @since 2006-2-2 lzG;F]
* @version 1.0 `HG19_Z
*/ 4QAIQQS
public class ImprovedMergeSort implements SortUtil.Sort { k!=GNRRZE
r)(BT:2m
private static final int THRESHOLD = 10; X'7S|J6s
jHH
/* O/9%"m:i
* (non-Javadoc) WV1 Z
* |HGb.^f?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Us,[x Q
*/ JjLyV`DJ
public void sort(int[] data) { >x
ghq
int[] temp=new int[data.length]; PbUcbb17
mergeSort(data,temp,0,data.length-1); @O}j:b
} sLdUrD%
~e77w\Q0
private void mergeSort(int[] data, int[] temp, int l, int r) { otf%kG w
int i, j, k; ll\^9
4]Q
int mid = (l + r) / 2; k(z<Bm
if (l == r) xg,]M/J
return; NK9WrUj)
if ((mid - l) >= THRESHOLD) =8p+-8M[d
mergeSort(data, temp, l, mid); gkML .u
else ](>7h_2B
insertSort(data, l, mid - l + 1); Xm:=jQn
if ((r - mid) > THRESHOLD) iWM7,=1+
mergeSort(data, temp, mid + 1, r); c4>sE[]
else ; [%}Xx
insertSort(data, mid + 1, r - mid); }u_EXP8M
Pgw%SMEp
for (i = l; i <= mid; i++) { RyOT[J
temp = data; b2X'AHK S
} P^3m:bE]
for (j = 1; j <= r - mid; j++) { \1mM5r~
temp[r - j + 1] = data[j + mid]; ~Oq,[,W
} &U$8zn~[k
int a = temp[l]; x56
F
int b = temp[r]; e9@fQ
for (i = l, j = r, k = l; k <= r; k++) { j%Z{.>mJ
if (a < b) { !N8)C@=
data[k] = temp[i++]; zLw h6^?Y
a = temp; 207 O["Y
} else { j(6$7+2qN
data[k] = temp[j--]; _SIs19"lR
b = temp[j]; +GYMJK`S+
} G:c8`*5Q
} 8#]7`o
} )xvx6?Ah|
R^yZG{?t
/** _d[2_b1
* @param data LlA`QLe
* @param l rw8J:?0x
* @param i nN=:#4
>Y
*/ pO/SV6N
private void insertSort(int[] data, int start, int len) { vbA7I<;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x1:Pj
} kyx SIQ^
} n`m_S
} d@6:|auO
} Ukx/jNyYv
rX!+@>4_L
堆排序: t}XB|h
_7=pw5[
package org.rut.util.algorithm.support; *]m kyAhi
_)#=>$k\
import org.rut.util.algorithm.SortUtil; ~mXZfG/D
^_*jp[!`b$
/** }\`(m\2xo
* @author treeroot >9o,S3
* @since 2006-2-2 ?AV&@EX2C
* @version 1.0 bmj8WZ
*/ Ad]<e?oN=
public class HeapSort implements SortUtil.Sort{ O)R7t3t
t$]&,ucW#
/* (non-Javadoc) fa!3/X+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |D;_:x9
*/ Kk!6B
public void sort(int[] data) { O+G~Qp0b>
MaxHeap h=new MaxHeap(); |5oKq'(b
h.init(data); , @%C8Z
for(int i=0;i h.remove(); Bs+c2R
System.arraycopy(h.queue,1,data,0,data.length); H$~M`Y9I~
} ?%cn'=>ZI
qDby!^ryc
private static class MaxHeap{ oupJJDpP
o &BPG@n
void init(int[] data){ GB&Nt{
this.queue=new int[data.length+1]; Cz'xGW{
for(int i=0;i queue[++size]=data; {l0,T0
fixUp(size); jd ["eI
} ? .c?Pu
} OJMvn'y
-Bo86t)F
private int size=0; !(kX~S
KqN!?anPr
private int[] queue; (bg}an
wXc,F D$
public int get() { ;EK(b
return queue[1]; $z= 0[%L
} _FL<egK
|.1qy,|!X
public void remove() { 7<^'DOs
SortUtil.swap(queue,1,size--); ;LHDh_.pX
fixDown(1); tY{;
U#9
} 0;}Aj8Fle
file://fixdown y&7YJx
private void fixDown(int k) { Xa4GqV9M/-
int j; fCLcU@3W?
while ((j = k << 1) <= size) { ppEJs
if (j < size %26amp;%26amp; queue[j] j++; j2M4H@
if (queue[k]>queue[j]) file://不用交换 dY1J<L}")
break; rqF"QU= l
SortUtil.swap(queue,j,k); YZ0en1ly
k = j; WS5A Y @(~
} d;{y`4p)s
} |Z
d]=tue
private void fixUp(int k) { S0F@#mSQ?
while (k > 1) { ]5N zK=2{
int j = k >> 1; G=1m]>I8
if (queue[j]>queue[k]) dPHw3^J0j
break; UIn^_}jF`
SortUtil.swap(queue,j,k); 0Su_#".-*
k = j; [G\o+D?2
} =Ci13< KQ
} QeL{Wa-2F
z4g+2f7h-X
} w$b~x4y%
A]j}'
} |-n
('gQ[
prUHjS
SortUtil: sW?B7o?
^PC\E}
package org.rut.util.algorithm; y<|)'(
dsK/6yu
import org.rut.util.algorithm.support.BubbleSort; U,HIB^=
R
import org.rut.util.algorithm.support.HeapSort; WKxm9y
V
import org.rut.util.algorithm.support.ImprovedMergeSort; }C_|gd
import org.rut.util.algorithm.support.ImprovedQuickSort; qL3@PSN?|
import org.rut.util.algorithm.support.InsertSort; [%jxf\9jJ_
import org.rut.util.algorithm.support.MergeSort; YwXXXh
import org.rut.util.algorithm.support.QuickSort; d5:tSO
import org.rut.util.algorithm.support.SelectionSort; z>|)ieL
import org.rut.util.algorithm.support.ShellSort; ]%Y\ZIS
*2=W5LaK.
/** O^0"
* @author treeroot pisB,wP$2
* @since 2006-2-2 JR)/c6j
* @version 1.0 n8$=f'Hgb
*/ k-Fdj5/
public class SortUtil { y@`~ 9$
public final static int INSERT = 1; ;R!*I%
public final static int BUBBLE = 2; UWw}!1
public final static int SELECTION = 3; ]26mB
public final static int SHELL = 4; {`F1u?l
public final static int QUICK = 5; /[iG5~G
public final static int IMPROVED_QUICK = 6; TP{Gt.e
public final static int MERGE = 7; JOHRmfqR
public final static int IMPROVED_MERGE = 8; b_=8!Q.:
public final static int HEAP = 9; 87<9V.s2
U` hfvTi
public static void sort(int[] data) { h@@d{{IqT
sort(data, IMPROVED_QUICK); On&L#pf
} /$:U$JVb?l
private static String[] name={ "yW&<7u1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VgMP^&/gZ
}; ;v_V+t<$
`hzrfum4
private static Sort[] impl=new Sort[]{ .*!#98pT
new InsertSort(), JKy#j g:#
new BubbleSort(), q}wj}t#
new SelectionSort(), 9cfR)*Q
new ShellSort(), _]=9#Fg7{
new QuickSort(), }lP 5GT2
new ImprovedQuickSort(), +j[`,5oS
new MergeSort(), ]*;F. pZ
new ImprovedMergeSort(), 7Ms90oE/c
new HeapSort() ^PqMi:htc
}; 6^E`Sa!s
TsHF
tj9S
public static String toString(int algorithm){ DMd ,8W7a
return name[algorithm-1]; TJOvyz`t
} M&y5AB0
<'&F;5F3V
public static void sort(int[] data, int algorithm) { p)3nyN=|_
impl[algorithm-1].sort(data); "K?Q
} 9&K/GaG
QU/3X 1W
public static interface Sort { QaQ'OrP
public void sort(int[] data); c!Dc8=nE0m
} vv.PF~:
[U.v:tR
public static void swap(int[] data, int i, int j) { *eUc.MX6x
int temp = data; KG8W8&q
data = data[j]; IgM
v =^U
data[j] = temp; >]&X ^V%Q#
} UFEN y."P
} J`oTes,