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。 lEL&tZ}
插入排序: ykrb/j|rK
%>_ZUu3M
package org.rut.util.algorithm.support; .S>:-j'u
1@JAY!yoo_
import org.rut.util.algorithm.SortUtil; I'{-T=R-q
/** \Bg;}\8X
* @author treeroot CvW*/d
q
* @since 2006-2-2 <t>"b|fW
* @version 1.0 MDGD*Qn~
*/ Z&e_yl
public class InsertSort implements SortUtil.Sort{ sPuNwVX>}I
`h*)PitRa
/* (non-Javadoc) 8@^=k.5IK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #]>Z4=]v
*/ Tp2 `eY5
public void sort(int[] data) { '!>LF1W=
int temp; FGo{6'K(:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U6;,<-bL
} bx`s;r=
} <)ozbv Xk
}
3=@94i
5TqB&GP0
} u;R<
0l=g$G
\%
冒泡排序: G[z!;Zuf
^vPM\qP#g
package org.rut.util.algorithm.support; 9(g?{ 6v|
&i179Qg!
import org.rut.util.algorithm.SortUtil; xs y5"
&,/_"N"?D
/** #!(OTe L
* @author treeroot 6}zargu(;
* @since 2006-2-2 ,)^4H>~V
* @version 1.0 OBp<A+a
*/ BO)K=gl;8
public class BubbleSort implements SortUtil.Sort{ |giV<Sj
$a|C/s+}7>
/* (non-Javadoc) xp<\7m_N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CBz$N) f
*/ *Y8nea^$
public void sort(int[] data) { OPHf9T3H
int temp; oKjQ?
4
for(int i=0;i for(int j=data.length-1;j>i;j--){ GY@(%^
if(data[j] SortUtil.swap(data,j,j-1); !8S$tk
} rvrv[^a(
} |zhVl
} ;LSdY}*%0
} R+
#(\
{+r0Nikx_
} ?hu}wl)
s @\UZC
选择排序: 3.,O7 k7y
S?TyC";!
package org.rut.util.algorithm.support; l'TM^B)`c
<d!_.f}v
import org.rut.util.algorithm.SortUtil; qXC>DGy
g*t(%;_m
/** iv@ey-,<
* @author treeroot F}
d>pK9fn
* @since 2006-2-2 VA{2a7]
* @version 1.0 +72[*_ <
*/ xaiA2
public class SelectionSort implements SortUtil.Sort { CJ0{>?
+
q@kRQY;n
/*
2w6y
* (non-Javadoc) ~Iw7Xq E2
* Qxb5Y)/jn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X;`XkOjk
*/ t<~$?tuZ
public void sort(int[] data) { >HMuh)
int temp; ,FWC|uM"
for (int i = 0; i < data.length; i++) { x
xMV2&,Jq
int lowIndex = i; t*X
k'(v
for (int j = data.length - 1; j > i; j--) { 2eNA#^T=
if (data[j] < data[lowIndex]) { RE~:+.eB
lowIndex = j; t0t" =(d
} Y v22,|:
} &)Y26*(`
SortUtil.swap(data,i,lowIndex); ZmM/YPy
} 5`] ;[M9
} E2J.t`H
5k /Y7+*?E
} qRy<W
n
*Y+y
Shell排序: ,
H$1iJ?
b|_Pt
package org.rut.util.algorithm.support; VsLlPw{
aNn\URR
import org.rut.util.algorithm.SortUtil; h,QC#Ak o
*2wFLh
/** 6%N.'wf
* @author treeroot Lckb*/jV&
* @since 2006-2-2 lI#Ap2@
* @version 1.0 Qy!*U%tG'
*/ -n.ltgW@
public class ShellSort implements SortUtil.Sort{ u!wR
9a4Xf%!F>z
/* (non-Javadoc) w'uI~t4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =/_tQR~
*/ w, uyN
public void sort(int[] data) { .7lDJ2
for(int i=data.length/2;i>2;i/=2){ rDr3)*H?0
for(int j=0;j insertSort(data,j,i); ^eu={0k
} 4@|"1D3
} )L^GGy8w
insertSort(data,0,1); k;aV4
0N9
} lN@SfM4\
$A>\I3B
/** Ns3k(j16
* @param data kY e3A&J
* @param j
v E4ce
* @param i sw:o3cC]
*/ Pr|:nJs
private void insertSort(int[] data, int start, int inc) { qyA%_;ReMY
int temp; <K6:"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yWsJa)e3*@
} 1^F
!X=
} |ATz<"q>
} AHg:`Wjv-
="yN4+0-p
} ?<_yW#x6
"Q{)H8,E)x
快速排序: (+M]C]
hT
c
VMc
package org.rut.util.algorithm.support; =1/d>kke
\U(;%V
import org.rut.util.algorithm.SortUtil; }@+3QHwYU
n+ot. -
/** M|HW$8V3_2
* @author treeroot r8]y1
Om<
* @since 2006-2-2 |@Cx%aEKU
* @version 1.0 ]VuB2L[D
*/ H]^hEQ3DT
public class QuickSort implements SortUtil.Sort{ 6bv~E.
G[;GP0\N
/* (non-Javadoc) >v
sy P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mp%.o}j
*/ {>x6SVF
public void sort(int[] data) { blUnAu
o~
quickSort(data,0,data.length-1); %MA o<,ha
} *wvd[q h
private void quickSort(int[] data,int i,int j){ H K]-QTEn
int pivotIndex=(i+j)/2; {~L{FG)O
file://swap !+<OED=qe
SortUtil.swap(data,pivotIndex,j); .dbZ;`s
MXVQ90
int k=partition(data,i-1,j,data[j]); \3WF-!xe
SortUtil.swap(data,k,j); &3@{?K
if((k-i)>1) quickSort(data,i,k-1); L6>;"]:f`
if((j-k)>1) quickSort(data,k+1,j); Lo<-;;vQ
jV}tjwq
} /-{C,+cB
/** PU& v{gn
* @param data 6k4ZzQ}
* @param i z(o zMH
* @param j q=,
* @return ,$H[DX
*/ ;?q>F3n
private int partition(int[] data, int l, int r,int pivot) { bjR:5@"
do{ Ba8 s
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t9U-c5bR
SortUtil.swap(data,l,r); ?3duW$`
} B.Szp_$
while(l SortUtil.swap(data,l,r); 3QD+&9{D
return l; qcmf*Yl:v
} [.
rULQl
iNlY\67sW
} o0Z~9iF&
4\#b@1]}
改进后的快速排序: C>MEgGP
p%ve1>c
package org.rut.util.algorithm.support; VR'R7
'5f6
M^}|2
import org.rut.util.algorithm.SortUtil; 7o99@K,
N=vb*3ECg
/** _nn\O3TB
* @author treeroot 0%W0vTvL
* @since 2006-2-2 'joc8o sS
* @version 1.0 @5=2+ M
*/ *XCgl*% *
public class ImprovedQuickSort implements SortUtil.Sort { WDF;`o*3
8kRqF?rbj
private static int MAX_STACK_SIZE=4096; {:%A
private static int THRESHOLD=10; #Wf9`
/* (non-Javadoc) !gyEw1Re7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?=},%^
*/ ~MpcVI_K
public void sort(int[] data) { ?=FRnpU?
int[] stack=new int[MAX_STACK_SIZE]; ,UveH` n-
aAi"
int top=-1; :TZ</3Sw
int pivot; VoGyjGt&
int pivotIndex,l,r; *"HA=-Z;
#
o;\5MOE%
stack[++top]=0; fZ6-ap,u
stack[++top]=data.length-1; {F'~1qf
R'z
-#*[
while(top>0){ Cqra\
int j=stack[top--]; e.>>al
int i=stack[top--]; &OXWD]5$6
b\.l!v n0
pivotIndex=(i+j)/2; -qDM(zR
pivot=data[pivotIndex]; gP^p7aYwn
QcN$TxU >
SortUtil.swap(data,pivotIndex,j); QqdVN3#1z
&2Q0ii#Aa
file://partition Y@#rGV>
l=i-1; >39\u&)
r=j; vw'BKi
F
do{ wRCv?D`vV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M~O$,dof
SortUtil.swap(data,l,r); +8zCol?j
} BXxl-x
while(l SortUtil.swap(data,l,r); P-LdzVt(^
SortUtil.swap(data,l,j); )zMsKfQ
|9;MP&68
if((l-i)>THRESHOLD){ Y2oN.{IH
stack[++top]=i; _yu_Ev}R
stack[++top]=l-1; Mv 1V
Vk
} ln*_mM/Q%
if((j-l)>THRESHOLD){ '7ps_pz
stack[++top]=l+1; M!#[(:
stack[++top]=j; lDf:~
} +]*hzWbe
0,M1Q~u%.
} uupfL>h
file://new InsertSort().sort(data); wQR0R~|M
insertSort(data); rl0|)j
} NNTUl$
/** ,^m;[Dl7
* @param data \1H~u,a
*/ IS[&V&.n
private void insertSort(int[] data) { -+H?0XN
int temp; g-O}e4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dp=#|!jc
} +}Q@{@5w
} ]ff5MY 36
} ,Srj38p
+=JJ=F)
} us2RW<Oxv
AfqthI$*m
归并排序: ?]Wg{\NC6
=.9uuF:
package org.rut.util.algorithm.support; /)LI1\o
r)/nx@x
import org.rut.util.algorithm.SortUtil; :dM
eNM-
O~L/>Ya
/** w`a(285s)i
* @author treeroot E#^?M#C
* @since 2006-2-2
B Sc5@;
* @version 1.0 8^U+P%
*/ YgCSzW&(
public class MergeSort implements SortUtil.Sort{ =zXA0%
TD"w@jBA
/* (non-Javadoc) "i1r9TLc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NkYU3[m$v
*/ >}|Vmy[/
public void sort(int[] data) { ,K 1X/),
int[] temp=new int[data.length]; 'H|=]n0
mergeSort(data,temp,0,data.length-1); !3JYG
} S1Ql%Yk-(
Wti?J.Csc
private void mergeSort(int[] data,int[] temp,int l,int r){ Au[H!J
int mid=(l+r)/2; c.JMeh
if(l==r) return ; Xb/^n.>
mergeSort(data,temp,l,mid); pU)g93
mergeSort(data,temp,mid+1,r); qR>"r"Fq
for(int i=l;i<=r;i++){ D8r=Vf
temp=data; ??g `c=R!V
} Vt;!FZ
int i1=l; D@
R>gqb
int i2=mid+1; 8Z1pQx-P2C
for(int cur=l;cur<=r;cur++){ Kulh:d:w
if(i1==mid+1) HyX:4f|]'
data[cur]=temp[i2++]; rZSX fgfr
else if(i2>r) _6/q.
data[cur]=temp[i1++]; Lr ;PESV
else if(temp[i1] data[cur]=temp[i1++]; lMW4SRk1C
else yw{;Qm2\7
data[cur]=temp[i2++]; C?h`i ^ >2
} pQ/
bIuq
} #nS[]UbwZ
0*umf.R
} 1}>u Y
&
~*qTojj
改进后的归并排序: Btu=MUS
d%C:%d
package org.rut.util.algorithm.support; Ad'b{C%
SPEDN}/^
import org.rut.util.algorithm.SortUtil; [ta3sEPjs
@ApX43U(
/** d(>
* @author treeroot )?qH#>mD6
* @since 2006-2-2 tMQz'3,X
* @version 1.0 Qk_`IlSd
*/ I[$SVPe#
public class ImprovedMergeSort implements SortUtil.Sort { 9YjO
e|&}{JP{[
private static final int THRESHOLD = 10; #Emz9qTsce
SGUu\yS&s
/* LnY`f -H
* (non-Javadoc) [Dou%\
* )VoQ/ch<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <6L=% \X{*
*/ 1;$8=j2
public void sort(int[] data) { qZ79IX'y
int[] temp=new int[data.length]; F')fi0=
mergeSort(data,temp,0,data.length-1); sM0o,l(5
} oPVyLD
`x'vF#
private void mergeSort(int[] data, int[] temp, int l, int r) { eo~>|0A*V
int i, j, k; v*UJ4r
int mid = (l + r) / 2; LsGu-Y5^
if (l == r) SF#Rc>v
return; >QJfTkD$
if ((mid - l) >= THRESHOLD) 28rC>*+z
mergeSort(data, temp, l, mid); |DZ3=eWZ
else .o!z:[IPY
insertSort(data, l, mid - l + 1); FA#?+kd
if ((r - mid) > THRESHOLD) ! !9l@
mergeSort(data, temp, mid + 1, r); V`;$Ua;y
else MlBw=Nr
insertSort(data, mid + 1, r - mid); !`VC4o
rt5eN:'qY
for (i = l; i <= mid; i++) { wWU5]v
temp = data; o"5[~$O
} oF9c>^s
for (j = 1; j <= r - mid; j++) { C"=^(HU
temp[r - j + 1] = data[j + mid]; HvSYE[Zt|
} Edi`x5"l
int a = temp[l]; }[%d=NY
int b = temp[r]; 4EB&Zmg[K
for (i = l, j = r, k = l; k <= r; k++) {
:Ky
*AI
if (a < b) { 7:>VH>?D
data[k] = temp[i++]; -Ze{d$
a = temp; RaNz)]+7`
} else { O*d4zBT
data[k] = temp[j--]; NX5A{
b = temp[j]; d|, B* N(w
} ~.,h12
} rWXw/a
} ZO !
,*w
/** B,Gt6cUq
* @param data *~0Ko{Avc
* @param l ]XAJ|[]sj*
* @param i %}*0l8y
*/ p>c` GDU
private void insertSort(int[] data, int start, int len) { 8!c#XMHV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W6>SYa
} .;'3Roi
} ;C+g)BW
} nHB=*Mj DV
} qK9\oB%s7
~^GY(J'
堆排序: ?(!<m'jEy
@^)aUOe
package org.rut.util.algorithm.support; xa?#wY
b
.PhH|jrCW^
import org.rut.util.algorithm.SortUtil; q:9#Vcw
^ld?v
/** [v!TQwMU
* @author treeroot u
VZouw#
* @since 2006-2-2 Rt{`v<
* @version 1.0 W?B(Jsv
*/ BIr24N
public class HeapSort implements SortUtil.Sort{
/
hl:p
=`l).GnN2`
/* (non-Javadoc) {_]'EK/w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5"]t{-PD
*/ >,JA=s
public void sort(int[] data) { y+PiH
MaxHeap h=new MaxHeap(); -a}d
@&
h.init(data); UW%.G
for(int i=0;i h.remove(); gtBnP~zT\B
System.arraycopy(h.queue,1,data,0,data.length); 8] BOq:
} 71h?t`N
N{(Q,+ ~
private static class MaxHeap{ f~3_Rv!
CX8tTbuFl
void init(int[] data){ ~
}<!ON;
this.queue=new int[data.length+1]; ^.d97rSm
for(int i=0;i queue[++size]=data; nsCat($)
fixUp(size); ;BR`}~m
} r.V< 5xV
} $:bU<
SgOn:xg;3L
private int size=0; o~*5FN}%+l
'Si1r%'m#
private int[] queue; :.+?v*%;n
aFj)s?$4]K
public int get() { BK_x5mGu3
return queue[1]; #jja#PF]7
} O-M4NKl]6
\(C_t1
public void remove() { Uv-xP(X
SortUtil.swap(queue,1,size--); r`THOj\cM
fixDown(1); K`9ph"(Z
} oM@X)6P_
file://fixdown Nz,8NM]
private void fixDown(int k) { "o*zZ;>^
int j; ?}N@bsl08w
while ((j = k << 1) <= size) { l1RpG"
if (j < size %26amp;%26amp; queue[j] j++; r`Qzn" H
if (queue[k]>queue[j]) file://不用交换 `z=I}6){
break; ml|[xM8
SortUtil.swap(queue,j,k); AU@XpaPWh
k = j; 2#n4t2p
} K,>D%mJ
} ?5%|YsJP_
private void fixUp(int k) { _%)v9}D
while (k > 1) { %#.HFK
int j = k >> 1; 4DL;/Z:
if (queue[j]>queue[k]) T4\F=iw4
break; ^XV=(k;~bX
SortUtil.swap(queue,j,k); 1|L3} 2
k = j; 1,p[4k~Ww
} S >P TD@
} Lmy ^/P%
ugM,wT&~Y
} H-Uy~Ry*T
WH.5vrY Z
} M~/%V NX
0Wf,SYx`s
SortUtil: }Om+,!_d
TB]Bl.
package org.rut.util.algorithm; r$~w3yN)v
oJF@O:A
import org.rut.util.algorithm.support.BubbleSort; {e4ILdXM
import org.rut.util.algorithm.support.HeapSort; MSmvQ
import org.rut.util.algorithm.support.ImprovedMergeSort; n')#]g0[
import org.rut.util.algorithm.support.ImprovedQuickSort; `hD\u@5Tw
import org.rut.util.algorithm.support.InsertSort; 2VOdI
import org.rut.util.algorithm.support.MergeSort; (9N75uCa
import org.rut.util.algorithm.support.QuickSort; wn'_;0fg
import org.rut.util.algorithm.support.SelectionSort; }ug|&25D
import org.rut.util.algorithm.support.ShellSort; {YCquoF
EHT5Gf
/** <}c`jN!z.
* @author treeroot <y(uu(c
* @since 2006-2-2 Fejs9'cB
* @version 1.0 X*2MNx^K~
*/ silTL_$
public class SortUtil { xGQ958@
public final static int INSERT = 1; eCYgi7?
public final static int BUBBLE = 2; 9w
-t9X>X
public final static int SELECTION = 3; :@TfhQV_=Q
public final static int SHELL = 4; x}G["ZU}v]
public final static int QUICK = 5; &)Fp
public final static int IMPROVED_QUICK = 6; Oj#nF@U
public final static int MERGE = 7; xzFV]
public final static int IMPROVED_MERGE = 8; a.a5qwG
public final static int HEAP = 9; ~M 6^%
Q"UQv<
public static void sort(int[] data) { c~0YIk>]
sort(data, IMPROVED_QUICK); :^DuB_
} ellj/u61bj
private static String[] name={ iPMI$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T jO}P\p
}; s4 o-*1R*`
bJD2c\qoc
private static Sort[] impl=new Sort[]{ TxYxB1C)
new InsertSort(), VJM n5v[V
new BubbleSort(), EPCu
new SelectionSort(), bQlShVJL
new ShellSort(), JVA JLq
new QuickSort(), (]Z%&>*
new ImprovedQuickSort(), `z$<1QT
new MergeSort(), J9^RP~>bs
new ImprovedMergeSort(), )1a3W7
new HeapSort() Oo<^~d2=
}; r"OVu~ND
*yqEl
O
public static String toString(int algorithm){ [X.sCl|
return name[algorithm-1]; DfFsCTu
} &eQF[8 ,
B
Mh949;
public static void sort(int[] data, int algorithm) { uhUC m
impl[algorithm-1].sort(data); lHwQ'/r
} e,qc7BJzK
@ oE [!
public static interface Sort { 9l?#ZuGXp
public void sort(int[] data); O $uXQ.r
} ^$aj,*Aj~
. gK*Jpmx
public static void swap(int[] data, int i, int j) { s@C@q(i6
int temp = data; i,BE]w
data = data[j]; Z
4uft
data[j] = temp; 4r!8_$fN?G
} w%Tcx^:
} Wyf+xr'Ky