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。 x
&\~4,TN
插入排序: O4}cv
Dm5UQe
package org.rut.util.algorithm.support; '[A>eC++
mB!81%f%|
import org.rut.util.algorithm.SortUtil; Pajr`gU
/** A5nu`e9&
* @author treeroot *{tJ3<t(1
* @since 2006-2-2 K|s+5>]W/[
* @version 1.0 lxxK6;r~>
*/ *M8 4Dry`y
public class InsertSort implements SortUtil.Sort{ PCFm@S@Q
#}A!Bk
/* (non-Javadoc) ZLO_5#<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BgE]xm
*/ b?Vu9!
public void sort(int[] data) { 8HWY]:|oh
int temp; Ds-%\@p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k|BEAdQ%M
} U2K>\/ -~
} I=b#tUBh8
} *rqih_j0
Et7AAV*8g
}
r_o2d 8
5 :AAqMa
冒泡排序: air{1="<-
+]AE}UXZoh
package org.rut.util.algorithm.support; "PuP J|
tw.%'oJ7
import org.rut.util.algorithm.SortUtil; 'r'uR5jR
.!Z.1:YR
/** =si<OB
* @author treeroot x-q er-
* @since 2006-2-2 gzuM>lf*{
* @version 1.0 [OMKk#vW
*/ ]P 2M
public class BubbleSort implements SortUtil.Sort{ yhTe*I=Gk
uT=sDWD:
/* (non-Javadoc) 2Yyc`o0R;h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?XeRL<n
*/ <iTaJa$0m
public void sort(int[] data) { dLo%+V#/A
int temp; 6)H70VPJ
for(int i=0;i for(int j=data.length-1;j>i;j--){ T9(~^}_+9
if(data[j] SortUtil.swap(data,j,j-1); 2Ejs{KUj
} fXL$CgXG\x
} @jjp\ ~
} wCkkfTO
} [y'jz~9c
xo?f90+(
} fE M8/bhq
fPspJug
选择排序: Q PGssQR6
HeR-;L
package org.rut.util.algorithm.support; J4x1qY)Y&v
56L>tP
import org.rut.util.algorithm.SortUtil; ?X=9@ m
! 5[?n3
/** E|Z Y2&J`4
* @author treeroot <iL+/^#
* @since 2006-2-2 m-;u]X=a
* @version 1.0 B-Fu/n
*/ n /rQ*hr
public class SelectionSort implements SortUtil.Sort { mWO=(}Fb\
bk"` hq
/* -BB 5bsjA
* (non-Javadoc) g*8sh
* )L^WD$"'Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :egSW2"5S
*/ ,Kdvt@vle
public void sort(int[] data) { R`/nsou
int temp; :pOX,
for (int i = 0; i < data.length; i++) { 0WQ0-~wx
int lowIndex = i; om@` NW
for (int j = data.length - 1; j > i; j--) { -V<i4X<|,+
if (data[j] < data[lowIndex]) { %*LdacjZ
lowIndex = j; v6iV#yz3(
} D<nTo&m_
} o.sa?*
SortUtil.swap(data,i,lowIndex); V_0e/7}Ya
} II),m8G
} M a_! 1Y
^@jOS{f l
} Oq|pd7fcgm
^2Op?J
Shell排序: )D(XDN
AEEy49e
package org.rut.util.algorithm.support; jLcW;7OAC
e}aD<EG
import org.rut.util.algorithm.SortUtil; 0*h\/!e
_:=w6jCk
/** KLbP;:sr
* @author treeroot oA73\BFfP
* @since 2006-2-2 #B>Hq~ vrC
* @version 1.0 7CNEP2}:R
*/ ]%G[<zD,1
public class ShellSort implements SortUtil.Sort{ (}bP`[@rX!
MYjDO>(_
/* (non-Javadoc) |L0 s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $JcU0tPq0
*/ {Uu7 @1@n
public void sort(int[] data) { tpA7"JD
for(int i=data.length/2;i>2;i/=2){ ,]Hn*\@p[c
for(int j=0;j insertSort(data,j,i); l6)*u[}E
} q}(UC1|
} TB1 1crE
insertSort(data,0,1); >b<br
} Z+Z`J;
,
>WG$!o +R
/** !*EHr09N7
* @param data ?6~RGg
* @param j 3"&6rdF\jB
* @param i !%]]lxi
*/ MNkysB(
private void insertSort(int[] data, int start, int inc) { 2 }+V3/
int temp; m<r.sq&;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oDA1#-
} RM QlciG
} d0IHl!X
} -s4qm)\
5Sk87o1E(d
} qH"e:
wgL
8(&C0_yD
快速排序: b\H~Ot[i
2I6 c7H s
package org.rut.util.algorithm.support; BQt!L1))
TQYud'u/
import org.rut.util.algorithm.SortUtil; Rl<~:,D
~(G]-__B<
/** tNfku
* @author treeroot kXv
-B-wOj
* @since 2006-2-2 4z?6[Cg<
* @version 1.0 7&OU!gp
*/ 5ahAp];
public class QuickSort implements SortUtil.Sort{ A+:K!|w
Rnun() plJ
/* (non-Javadoc) D55dD>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eDIjcZ
*/ ld`oIEj!P_
public void sort(int[] data) { fs7JA=?:
quickSort(data,0,data.length-1); >.QD:_@:
} sd.:PE <
private void quickSort(int[] data,int i,int j){ ,SS@]9A&
int pivotIndex=(i+j)/2; k45xtKS>d
file://swap A10/"Ec<u
SortUtil.swap(data,pivotIndex,j); zgqe@;{
3E:wyf)i"
int k=partition(data,i-1,j,data[j]); A+NLo[swwu
SortUtil.swap(data,k,j); ,8EeSnI
if((k-i)>1) quickSort(data,i,k-1); )7[>/2aGd
if((j-k)>1) quickSort(data,k+1,j); ka*VQXk*
'2v,!G]^
} n%@xnB$ZX
/** c:hOQZ
* @param data lv,8NmP5
* @param i f4]nz:2
* @param j *#dXW\8qu
* @return ) Q]kUG#`
*/ Pgs4/
private int partition(int[] data, int l, int r,int pivot) { v!K%\h2A
do{ !f]F'h8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e#SNN-hKsJ
SortUtil.swap(data,l,r); JzCfs<D
} .kvuI6H
while(l SortUtil.swap(data,l,r); w%j 6zsTz
return l; i#&]{]}Qv
} vQYd!DSh
Xy=|qu
} ;sCX_`t0E
[m!$01=
改进后的快速排序: qEX59v
]={:VsnL
package org.rut.util.algorithm.support; 4?1Ac7bE
C5 ^_R
import org.rut.util.algorithm.SortUtil; +2MsyA?6_
9e1gjC\ c
/** ] QtG gWtC
* @author treeroot HO}aLp
* @since 2006-2-2 ,HY z-sK.
* @version 1.0 C&K%Q3V
*/ k7f[aM 5]
public class ImprovedQuickSort implements SortUtil.Sort { ayHI(4!$j
|]Pigi7y-
private static int MAX_STACK_SIZE=4096; #li;L
private static int THRESHOLD=10; "EQ}xj
/* (non-Javadoc) h$4V5V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z35n3q
*/ y @h^
public void sort(int[] data) { VqbMFr<k
int[] stack=new int[MAX_STACK_SIZE]; 9{?<.%
24>{T5E
int top=-1; oI/@w
int pivot; *
vEG%Y
int pivotIndex,l,r; ?r2Im5N
0XvMaQXQF
stack[++top]=0; a(BWV?A
stack[++top]=data.length-1; M\>y&'J-
W;Ox H"eC
while(top>0){ ~)Ny8Dh
int j=stack[top--]; OCY7Bls4
int i=stack[top--]; 2gb49y~
ZLxe$.V_
pivotIndex=(i+j)/2; hDjsGB|Fz
pivot=data[pivotIndex]; _OHz 6ag
2m/1:5
SortUtil.swap(data,pivotIndex,j); &=K-~!?
Z:)\j.
file://partition 7Ja^d-F7
l=i-1; ~u/Enl7\-
r=j; jKM-(s!(
do{ at
]Lz_\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _f{'&YhUU
SortUtil.swap(data,l,r); GDZe6*
} d cYUw]
while(l SortUtil.swap(data,l,r); 4,wdIdSm4
SortUtil.swap(data,l,j); 6aXsRhQ~
,R3D
if((l-i)>THRESHOLD){ d\'M ~VQ
stack[++top]=i; bXC;6xZV
stack[++top]=l-1; b>&kL
} _dIv{L!
if((j-l)>THRESHOLD){ _H<ur?G
stack[++top]=l+1; -Y2h vC
stack[++top]=j; C(7LwV
} Hg*6I%D[So
`61VP-r
} M@
! {m
file://new InsertSort().sort(data); ZsNUT4
insertSort(data); Kc}FMu
} ;'p X1T
/** /N{x Ft/?
* @param data eWW\m[k]}
*/ a:H}c9$%
private void insertSort(int[] data) { JY_+p9KfyQ
int temp; kc1 *@<L6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ].7)^
} \E]s]ft;+
} +.b~2K1
} gj$gqO`B
#0hX)7(j
} w!8h4U.
;
[{f{E
归并排序: &z&Jl#t-)
y85GKysT
package org.rut.util.algorithm.support; ~?+Jt3?,
"((6)U#
import org.rut.util.algorithm.SortUtil; c
R[DT04
s:i$ s")
/** P_lk40X
* @author treeroot f:=q=i
* @since 2006-2-2 {*yhiE ,
* @version 1.0 &HT
PeB
*/ *"q ~z
public class MergeSort implements SortUtil.Sort{ "a>%tsl$K
0_,V}
/* (non-Javadoc) 'FO^VJ;ha
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>C;$Lp]
*/ L+9a4/q
public void sort(int[] data) { r}pYm'e
int[] temp=new int[data.length]; p`T7Y\\#!
mergeSort(data,temp,0,data.length-1); haqL
DVrf
} cuW$%$F
$*`fn{2
private void mergeSort(int[] data,int[] temp,int l,int r){ . m@Sk`s
int mid=(l+r)/2; !sK{:6s
if(l==r) return ; 5lVDYmh
mergeSort(data,temp,l,mid); A
ElNf:
mergeSort(data,temp,mid+1,r); .y#@~H($
for(int i=l;i<=r;i++){ Q<w rO
temp=data; KZsSTB6J
} {CYFM[V
int i1=l; yLipuMNV
int i2=mid+1; $l7
<j_C
for(int cur=l;cur<=r;cur++){ *=UEx0_!q
if(i1==mid+1) OiJ1&Fz(
data[cur]=temp[i2++]; &5~bJ]P
else if(i2>r) ,K,n{3]
data[cur]=temp[i1++]; !1-:1Whz8
else if(temp[i1] data[cur]=temp[i1++]; '<4/Md[
else FJ}/g
?
data[cur]=temp[i2++]; x_s9DkX
} [;83
IoU}
} `>g:
:
_~-VH&g0R
} P9SyQbcK
5ju\!Re3X
改进后的归并排序: =Pd3SC})6V
rcY[jF
package org.rut.util.algorithm.support; [8l8m6
vRVQ:fw
import org.rut.util.algorithm.SortUtil; H+;>>|+:~
#q6jE
/** _ ?xORzO
* @author treeroot ? R#-gvX%
* @since 2006-2-2 @m<xpel
* @version 1.0 !J3g, p*
*/ <;=?~QK%-
public class ImprovedMergeSort implements SortUtil.Sort { W(9-XlYKE
QZYD;&iY&
private static final int THRESHOLD = 10; Nd%,V
.?@$Rd2@W
/* j_j~BXhIS
* (non-Javadoc) i%:oO
KI
* s1?N&t8c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }c:s+P+/
*/ [y W0U:m
public void sort(int[] data) { X8GIRL)lJ
int[] temp=new int[data.length]; )8!""n~
mergeSort(data,temp,0,data.length-1); K\,)9:`t
} dE%rQE7'
g-bHf]'
private void mergeSort(int[] data, int[] temp, int l, int r) { zr-HL:js
int i, j, k; es6!p 7p?
int mid = (l + r) / 2; }[ld=9p(
if (l == r) {M )Y6\v
return; a[1^)=/DM
if ((mid - l) >= THRESHOLD) 5.q2<a :
mergeSort(data, temp, l, mid); |p-, B>p!
else to|O]h2*U2
insertSort(data, l, mid - l + 1); %}J[EV
if ((r - mid) > THRESHOLD) Vof[yL `
mergeSort(data, temp, mid + 1, r); [h
{zT)[
else 2ed$5.D
insertSort(data, mid + 1, r - mid); p$`71w)'[
[sy~i{Bm
for (i = l; i <= mid; i++) { 0L S,(v4
temp = data; 3-`IMNn!
} ; {iX_%
for (j = 1; j <= r - mid; j++) { h.l^f>,/
temp[r - j + 1] = data[j + mid]; [U5[;BNRD
} |k\4\aLj
int a = temp[l]; _)"-zbh}{
int b = temp[r]; SDwTGQ/0
for (i = l, j = r, k = l; k <= r; k++) { ^KM' O8
if (a < b) { wDVKp['
data[k] = temp[i++]; bC{}&a
a = temp; >7V96jL$Y
} else { ^Vso`(Ss
data[k] = temp[j--]; !KKkw4
b = temp[j]; =\"88e;b2
} V|gW%Z,j
} >B!E 6ah
} ,.A@U*j
="Zr. g~8
/**
W8z4<o[$
* @param data 2!Yq9,`
* @param l a\pOgIp
* @param i 'y[74?1
*/ ($pN OGH
private void insertSort(int[] data, int start, int len) { ;|}N\[fk%]
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K!Te*?b
} 2Tec#eYe
} L-?
?%_=
} zkt`7Pg;J
} v[{g"C
}E0~'
堆排序: :tBIo7
!}[}YY?',i
package org.rut.util.algorithm.support; [%
\>FT[
(0dy,GRN
import org.rut.util.algorithm.SortUtil; ABb,]%
>'ev_eAk
/** "\cDSiD
* @author treeroot R/ix,GC
* @since 2006-2-2 CT1@J-np
* @version 1.0 '9@S
*/ p!B&&)&db
public class HeapSort implements SortUtil.Sort{ v3PtiKS
`@TWZ%f6
/* (non-Javadoc) d9e_slx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kh&W\\K
*/ 'K&^y%~py,
public void sort(int[] data) { VRU"2mQ.P6
MaxHeap h=new MaxHeap(); d!0iv'^ t
h.init(data); ~tx|C3A`d
for(int i=0;i h.remove(); i^T@jg+K
System.arraycopy(h.queue,1,data,0,data.length); D+m#_'ocL
} _/V<iv
(KxI*
private static class MaxHeap{ C# zYZ JZ
)l?1dR:sP
void init(int[] data){ 2 tD{c^
9<
this.queue=new int[data.length+1]; ~wYGTm=(n
for(int i=0;i queue[++size]=data; x3DUz
fixUp(size); ,2oF t\`.r
} 3r^Ls[ey
} S!WG|75B
#O 2g]YH
private int size=0; "o_s=^U
y_mTO4\C2
private int[] queue; X})5XYvA*
^Gi9&fS,
public int get() { 3PkVMX
return queue[1]; Znr6,[U+q
} wnUuoX(
,5V w^@F
public void remove() { |"}oGL6-
SortUtil.swap(queue,1,size--); MrjgV+P}[
fixDown(1); 5"sd
} CWT#1L=
file://fixdown ]2E#P.-!b
private void fixDown(int k) { mR,w~wP
int j; {E=BFs
while ((j = k << 1) <= size) { $, hHR:
if (j < size %26amp;%26amp; queue[j] j++; zUuOX5-6x
if (queue[k]>queue[j]) file://不用交换 gGZ-B<
break; 5 EhOvt8
SortUtil.swap(queue,j,k); 3JYhF)G
k = j; :1asY:)vNP
} B(|*u
} @TJxU
private void fixUp(int k) { tTEw"DL_-
while (k > 1) { =csh=V@s
int j = k >> 1; H4B|c42
if (queue[j]>queue[k]) F$/7X~*
break; f \ E9u}
SortUtil.swap(queue,j,k); B]2m(0Y>>v
k = j; <+y%k~("
} Es<& 6
} ;*%3J$T+
,J6t
1V
} YCl&}/.pA
E)3Ah!
} e5AZU7%.
\LG0
SortUtil: IA%|OVAfF
:o3>
package org.rut.util.algorithm; p=!12t
[]lMv
ZW
import org.rut.util.algorithm.support.BubbleSort; L"KKW
c
import org.rut.util.algorithm.support.HeapSort; knfEbH
import org.rut.util.algorithm.support.ImprovedMergeSort; ?e{hidg
import org.rut.util.algorithm.support.ImprovedQuickSort; nsL"'iQ
import org.rut.util.algorithm.support.InsertSort; 2Tp@;[!3
import org.rut.util.algorithm.support.MergeSort; 5GK> ~2c(
import org.rut.util.algorithm.support.QuickSort; 'XJqh|G
import org.rut.util.algorithm.support.SelectionSort; LZtO Q__B)
import org.rut.util.algorithm.support.ShellSort; E"%dO
|LV}kG(2
/** *I:a\o~$[
* @author treeroot )\KU:_l
* @since 2006-2-2 FuC#w 9_
* @version 1.0 mzf~qV^T
*/ mE\)j*Nnv
public class SortUtil { &=*sN`
public final static int INSERT = 1; R$h
B9BK
public final static int BUBBLE = 2; 2c*w{\X
public final static int SELECTION = 3; /
Q| Z&-c
public final static int SHELL = 4; B?%e-xV-
public final static int QUICK = 5; \@[Y~:
public final static int IMPROVED_QUICK = 6; buldA5*!o
public final static int MERGE = 7; R]&lVXyH
public final static int IMPROVED_MERGE = 8; `h%K8];<6f
public final static int HEAP = 9; 6t\0Ui
G%A!yV
public static void sort(int[] data) { a[V X)w_W{
sort(data, IMPROVED_QUICK); cYgd1
} 9!_JV;2
private static String[] name={ r^7eK)XA_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _z=ytt9D
}; YEa<zhO8
B/*\Ih9y
private static Sort[] impl=new Sort[]{ 9Y:Iha`$w
new InsertSort(), L\hid/NL
new BubbleSort(), W(}2R>$
new SelectionSort(), b*(,W
new ShellSort(), -x{@D{Q%
new QuickSort(), ,. zHG
new ImprovedQuickSort(), I`77[
new MergeSort(), `_()|; !y
new ImprovedMergeSort(), o)f$ 7.
new HeapSort() oI5^.Dr FW
}; `>4"i+NFF8
e?7y$H-
public static String toString(int algorithm){ :qc?FQ
;
return name[algorithm-1]; ( Sjlm^bca
} z }Lf]w?
Y[N@ )E_G
public static void sort(int[] data, int algorithm) { Q#F9&{'l
impl[algorithm-1].sort(data); Aj8zFt]
} }hE!0q~MfM
/PVx
public static interface Sort { U2)?[C1q{
public void sort(int[] data); 5yyc0UG
} F}.R-j#
;}lsD1S:
public static void swap(int[] data, int i, int j) { J%]5C}v \
int temp = data; 1#3eY?Nb
data = data[j]; K]1|#`n
data[j] = temp; n&!q9CR`
} ~Ede5Vg!!2
} #@' B\!<@=