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。 2t[P-on
插入排序: ?l9j]
-Is;cbfLj/
package org.rut.util.algorithm.support; j"F?^0aR,Q
I?&/J4o:
import org.rut.util.algorithm.SortUtil; #=g1V?D
/** 1p5n}|
* @author treeroot 1)o6jGQ
* @since 2006-2-2 >'1[Bh
* @version 1.0 T@%\?=P
*/ ?yc{@|
public class InsertSort implements SortUtil.Sort{ v6M4KC2?
y<g1q"F
/* (non-Javadoc) MO>9A,&f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d@XXqCR<
*/ JyO2P
public void sort(int[] data) { )UCc!
int temp; 1PB"1.wnd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #soV'SFG
} bQ3txuha
} [} zzG@g,J
} kz\Ss|jl
\47djmG-
} y '[VZ$^i
Gl"|t't(
冒泡排序: N<PDQ
3Cw}y55_y
package org.rut.util.algorithm.support; %vil~NU
YSh@+AN
import org.rut.util.algorithm.SortUtil; <I#nwoHN
w7@TM%nS
/** 85T"(HhT
* @author treeroot *\(MG|S
* @since 2006-2-2 ~ \]?5
nj
* @version 1.0 l+a1 `O
*/ L</k+a?H!
public class BubbleSort implements SortUtil.Sort{ RY
.@_{
.He}f,!f<
/* (non-Javadoc) u*T(n s
l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "g,`K s ];
*/ xG(xG%J
public void sort(int[] data) { bu9.HvT'
int temp; J%u,qF}h
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'Qh1$X)R7a
if(data[j] SortUtil.swap(data,j,j-1); F[v:&fle
} BW:HKH.k
} )dd1B>ej]
} Mbp7%^E"A
} N[rAb*iT
r~z'QG6v/
} iInWw"VbKe
k2@]nW"S
选择排序: 'u:-~nSX)
Nq%ir8hE
package org.rut.util.algorithm.support; eaC%&k
#;yxn.</
import org.rut.util.algorithm.SortUtil; K9{RU4<
oY4^CGk=
/** yeI>b 1>Q
* @author treeroot >UQY3C
* @since 2006-2-2 ) ViBH\.*p
* @version 1.0 9=mc3m:Tb(
*/ s&hr$`V4
public class SelectionSort implements SortUtil.Sort {
/&c2O X|Z
?P}bl_
/* >J5C .hx
* (non-Javadoc) T]JmnCX>:
* \h"U+Bv7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QC?~$>h!?
*/ w_f.\\1r
public void sort(int[] data) { ]rv4O@||w
int temp; %vv`Vx2
for (int i = 0; i < data.length; i++) { /w1M%10
int lowIndex = i; EV?U
!O
for (int j = data.length - 1; j > i; j--) { T](}jQxj`
if (data[j] < data[lowIndex]) { RG*Vdom
lowIndex = j; $AT@r"
} o]Xt2E
} 41x"Q?.bY
SortUtil.swap(data,i,lowIndex); /O5&)%N
} eP,bFc
} QtwQVOK
Wqkb1~]#Y
} o{6q>Jm
B>W8pZu-J
Shell排序: zXM,cV/s
?G5,}%
package org.rut.util.algorithm.support; ?!K6")SE
9b&|'BBW
import org.rut.util.algorithm.SortUtil; 1~'jC8&J
9vz\R-un
/** 4-t^?T:qF
* @author treeroot 7o0zny3?
* @since 2006-2-2 !b"?l"C+u
* @version 1.0 {#ynN`tLyF
*/ cT(6>@9@
public class ShellSort implements SortUtil.Sort{ 2j:0!%
jQ,Vs=*H
/* (non-Javadoc) Kxch.$hc,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V"Z8-u
*/ g@37t @I
public void sort(int[] data) { <|3%}?
for(int i=data.length/2;i>2;i/=2){ P`ou:M{8
for(int j=0;j insertSort(data,j,i); s-_D,$ |
} =#/Kg_RKL
} m`9nDiV
insertSort(data,0,1); J*[@M*R;&
} 4Wp5[(bg
r=&,2meo
/** qXg&E}]:=
* @param data 'w27Lt'V
* @param j ni&|;"Nt-
* @param i uN:KivVe
*/ HeO:=OE~>
private void insertSort(int[] data, int start, int inc) { kDE-GX"Y
int temp; kzjuW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ujRXAN@mC
} +4.s4&f)
} #D4
} odSPl{. >d
G0{Z@CvO'
} >UMxlvTg&
4SZ,X^]I>
快速排序: B
ytx.[zbX
{Q3OT
package org.rut.util.algorithm.support; 8 ECX[fw
X3\PVsH$K
import org.rut.util.algorithm.SortUtil; 6,A|9UX=`
d?8OY
/** *m}8L%<HT
* @author treeroot X>Vc4n<}
* @since 2006-2-2 =w!ik9
* @version 1.0 \c
-m\|
*/ HiA E9
public class QuickSort implements SortUtil.Sort{ Vw1>d+<~-)
}! EVf
/* (non-Javadoc) dgjK\pH`h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cjx4vP
*/ O|V0WiY<
public void sort(int[] data) { !,$#i
quickSort(data,0,data.length-1); 7ocUFY0"
} ZQ]qJDk
private void quickSort(int[] data,int i,int j){ mUa#sTm
int pivotIndex=(i+j)/2; 8u2k-_9
file://swap hhze5_$_
SortUtil.swap(data,pivotIndex,j); $
]s^M=8
N<9 c/V
int k=partition(data,i-1,j,data[j]); y)fMVD"(
SortUtil.swap(data,k,j); zak\%yY`
if((k-i)>1) quickSort(data,i,k-1);
yf:Vhr
if((j-k)>1) quickSort(data,k+1,j); /[<F
f
?
`p/jA
} o{G*7V@H
/**
xgcxA:
* @param data Cgx:6TRS
* @param i k1<^Ept
* @param j `Pvi+:6\Y
* @return |Dn Zk3M,
*/ ZC N}iQu4
private int partition(int[] data, int l, int r,int pivot) { [(heE
do{ 1ysfpX{=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -Cs( 3[
SortUtil.swap(data,l,r); nzC *mPX8
} %):_
while(l SortUtil.swap(data,l,r); cu N9RG
return l; Z*m^K%qJ
} A?H#bRAs
Hu"$)V
} 8>9Mh!t}(I
Z)s
!p
改进后的快速排序: hzsQK_;S
2iG+Ek-?"
package org.rut.util.algorithm.support; )X0=z1$
uu.X>agg
import org.rut.util.algorithm.SortUtil; '4 *0Pw
<= o<lRU
/** ,c&u\W=p
* @author treeroot SBreA-2
* @since 2006-2-2 FJc8g6M
* @version 1.0 x/DV> Nfn
*/ 8ttJ\m
public class ImprovedQuickSort implements SortUtil.Sort { ]q1w@)]n}
= LNU%0m
private static int MAX_STACK_SIZE=4096; qWhW4$7x
private static int THRESHOLD=10; Y~vk>ZC
/* (non-Javadoc) DyN[Yp|V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X"!j_*&ED
*/ #<xFO^TB
public void sort(int[] data) { w a_{\v=
int[] stack=new int[MAX_STACK_SIZE]; \J+a7N8m,
!|Q&4NS
int top=-1; ,{PN6B
int pivot;
UjI./"]O
int pivotIndex,l,r; b* n3Fej
kG/1
stack[++top]=0; <=NnrZOF
stack[++top]=data.length-1; _d]{[&
p4t
.o/|]d`%
while(top>0){ FOQ-KP\=,
int j=stack[top--]; 5-X$"Z|@
int i=stack[top--]; gy}3ZA*F
cy8>M))c
pivotIndex=(i+j)/2; dHDtY$/_
pivot=data[pivotIndex]; 3gUY13C}:p
V
*@q< rQ
SortUtil.swap(data,pivotIndex,j); 9i\RdJv.
6\.g,>
file://partition kH eD(Ea
l=i-1; j2D!=PK;
r=j; f6Y?),`
do{ sE?%;uBb
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #&'S-XE+
SortUtil.swap(data,l,r); tg\Nm7I
} %unn{92)
while(l SortUtil.swap(data,l,r); lwQ!sH[M
SortUtil.swap(data,l,j); zDdo RK@
B~I ]3f
if((l-i)>THRESHOLD){ E{T3Xwg
stack[++top]=i; |KhpF1/(
stack[++top]=l-1; LA6XTgcu
} g=\(%zfsxr
if((j-l)>THRESHOLD){ !0l|[c4 e>
stack[++top]=l+1; L ci?
stack[++top]=j; -dM~3'
} B&_:20^y~
<.ZIhDiEl
} ?Z{/0X)]|
file://new InsertSort().sort(data); E!Q@AZ
insertSort(data); BbX$R`f
} >V^8<^?G
/** R|RGoGE6g
* @param data MGF!ZZ\
*/ JP Dxzp
private void insertSort(int[] data) { a?y ucA
int temp; _/:- -Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &u:U"j
} z -?\b^
} ^VYR}1Mw
} cIO/8D#zU
}@bp v
} 2?ue.1C
+O8[4zn&k
归并排序: OAkqPG&w
GG#-x$jK
package org.rut.util.algorithm.support; ":eyf3M
Z2W&_(^.h
import org.rut.util.algorithm.SortUtil; &3iI\s[
L"YQji!
/** <W!T+sMQj
* @author treeroot >7WT4l)7!b
* @since 2006-2-2 vVB WhY]
* @version 1.0 O.dZ3!!+
*/ !*c%Dj
public class MergeSort implements SortUtil.Sort{ bmHj)^v5]
A5R"|<UPR
/* (non-Javadoc) 46f-po_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mCnl@
*/ .B^tEBGVD
public void sort(int[] data) { ]4O!q}@Cd
int[] temp=new int[data.length]; GNW$:=0u
mergeSort(data,temp,0,data.length-1); y0 vo-Q
} w8+phN(-M
d*u3]&?x&f
private void mergeSort(int[] data,int[] temp,int l,int r){ %;wDB2k*
int mid=(l+r)/2; z/j*zU
`
if(l==r) return ; w%wVB/(
mergeSort(data,temp,l,mid); [ (Y@
mergeSort(data,temp,mid+1,r); "'DPb%o
for(int i=l;i<=r;i++){ @w33u^
temp=data; 9uxoMjR-
} p!E*ANwX
int i1=l; AIP0PJI3
int i2=mid+1; M7qg\1L
for(int cur=l;cur<=r;cur++){ |+h x2?Nv
if(i1==mid+1) k6 OO\=
data[cur]=temp[i2++]; &LV'"2ng8
else if(i2>r) =n.&N
data[cur]=temp[i1++]; {U9{*e$=
else if(temp[i1] data[cur]=temp[i1++]; GB+$ed5@<
else 7IUJHc[R?
data[cur]=temp[i2++]; vmxS^_I
} ^E,
#}cW
} .&u
@-Vm
oJV dFE
} Zp/P/97p
UaG&HGg]!
改进后的归并排序: Zc";R!At
Nl4uQ_"
package org.rut.util.algorithm.support; >]B_+r0m^
2X`t&zg
import org.rut.util.algorithm.SortUtil; 7yG%E
&OvA[<qT
/** W<#Kam:8e
* @author treeroot 9a:(ab'
* @since 2006-2-2 C^?/9\
* @version 1.0 2x gk$E$ 7
*/ 5> 81Vhc,
public class ImprovedMergeSort implements SortUtil.Sort { Z%sTj6Th
P{RGW.Ci@
private static final int THRESHOLD = 10; k(`> (w
e0C_ NFS+
/* u$qasII
* (non-Javadoc) VaonG]Ues
* Yi-,Pb?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {DVMs|5;^
*/ 5/hgWG6.t
public void sort(int[] data) { Us[F@
int[] temp=new int[data.length]; _or_Vw!
mergeSort(data,temp,0,data.length-1); asW
W@E
} {#t7lV'4
3W[||V[r]<
private void mergeSort(int[] data, int[] temp, int l, int r) { \0*dKgN
int i, j, k; Ut%{pc 7^F
int mid = (l + r) / 2; Vf(..8
if (l == r) [+@T"2h2b
return; 9qq6P!
if ((mid - l) >= THRESHOLD) 6XAofN/5f
mergeSort(data, temp, l, mid); E.B6u, Te
else eiA$) rzy
insertSort(data, l, mid - l + 1); N+]HJ`K
if ((r - mid) > THRESHOLD) 5IgO4 <B
mergeSort(data, temp, mid + 1, r); un`4q-S7
else RdjoVCf
insertSort(data, mid + 1, r - mid); #T>pu/EQX_
Bi/E{k,
for (i = l; i <= mid; i++) { y2B'0l
temp = data; jlyuu
} do l8O
for (j = 1; j <= r - mid; j++) { IUG}Q7w5
temp[r - j + 1] = data[j + mid]; !h^_2IX
} :VR%I;g ;
int a = temp[l]; Q{
g{
int b = temp[r]; f(EO|d^u
for (i = l, j = r, k = l; k <= r; k++) { 5o^\jTEl^
if (a < b) { M"Y,kA|+
data[k] = temp[i++]; =Q# (2
a = temp; %4wHiCOg
} else { 2/))Y\~
data[k] = temp[j--]; 4?_^7(%p
b = temp[j]; R<r,&X?m
} Fbw.Y6
} M3fTUCR
} ]<;y_
d|sf2
/** =+VDb5= TV
* @param data
msq2/sS~
* @param l ziQ&M\
* @param i Wq25, M'
*/ ayg^js2,
private void insertSort(int[] data, int start, int len) { I!Fd~g9I4
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Vc8w[oS
} B;<zA' 1
} a 4?c~bs
} UD&pL'{s
} e[QEOx/-h2
HSACaTVK
堆排序: /W{^hVkvC
w,1*dn
package org.rut.util.algorithm.support; ~'Korxa
US<l4
import org.rut.util.algorithm.SortUtil; r+a0.
@><8YN^)%
/** 7Xh
;dJAF3
* @author treeroot _]< Tv3]RK
* @since 2006-2-2 L7yEgYB
* @version 1.0 ] `;Fc8$
*/ OFZo"XtF
public class HeapSort implements SortUtil.Sort{ *b`1+~p_2
&<(&u`S
/* (non-Javadoc) 'qoaMJxN`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bW GMgC
*/ "Qk)EY
public void sort(int[] data) { pWeD,!f
MaxHeap h=new MaxHeap(); m>DJ w7<
h.init(data); 0J.]`kR
for(int i=0;i h.remove(); @f#6Nu
System.arraycopy(h.queue,1,data,0,data.length); k4JTc2b
} fTGVG
]_m(q`_
private static class MaxHeap{ 4SIS#m
^aqBL
void init(int[] data){ +@+*sVb
this.queue=new int[data.length+1]; );xTl6Y9
for(int i=0;i queue[++size]=data; gZL,xX
fixUp(size); DLoH.Fd
} FY,)iZ}Pq
} 6^ ,;^
FD8d-G
private int size=0; gS!zaD7Nr
>B$B|g~
private int[] queue; MVDy|i4
X(;WY^i!
public int get() { <@>l9_=R
return queue[1]; }4q1"iMlO
} N3\vd_D(
vSo,,~F
public void remove() { nz/cs n
SortUtil.swap(queue,1,size--); nR,QqIFFw
fixDown(1); g7v(g?
} (J.U{N v
file://fixdown Sj<]~*y"
private void fixDown(int k) { b%xG^jUXsX
int j; }u;`k'J@
while ((j = k << 1) <= size) { GjX6noqT
if (j < size %26amp;%26amp; queue[j] j++; cJ'OqV F
if (queue[k]>queue[j]) file://不用交换 -]Aqt/w"l
break;
[$`%ve
SortUtil.swap(queue,j,k); ]9}^}U1."
k = j; /Uni6O)oc
} OyIIJ!(
} dlioa Yc
private void fixUp(int k) { d*LW32B@
while (k > 1) { zCmx 1Djz
int j = k >> 1; ,b t
j6hg
if (queue[j]>queue[k]) rb]?"lizi
break; |}o3EX
SortUtil.swap(queue,j,k); /PE L[Os
k = j; :CP,DO
} ka*#O"}L8
} FlT5R*m
Cq}E5M
} yXCHBz 6&
%0%Tp
} tcJN`N
D/Py?<n-B
SortUtil: 2~%^y6lR
kTm}VTr
1
package org.rut.util.algorithm; C ~04#z_$
A(+%DZ
import org.rut.util.algorithm.support.BubbleSort; aqv'c
j>
import org.rut.util.algorithm.support.HeapSort; 1/J6<FVq
import org.rut.util.algorithm.support.ImprovedMergeSort; j7J'd?l
import org.rut.util.algorithm.support.ImprovedQuickSort; nPUD6<bF
import org.rut.util.algorithm.support.InsertSort; #cqI0ny?G
import org.rut.util.algorithm.support.MergeSort; I
MG^L
import org.rut.util.algorithm.support.QuickSort; NJg )S2]7
import org.rut.util.algorithm.support.SelectionSort; 4-oaq'//BT
import org.rut.util.algorithm.support.ShellSort; mTL JajE/
]$I}r=
Em
/** /z: mi
* @author treeroot =G`g-E2
* @since 2006-2-2 dEZlJo@J
* @version 1.0 W@D./Th
*/ _P*QX
public class SortUtil { wv^n#
public final static int INSERT = 1; ~,.;2K73
public final static int BUBBLE = 2; tNz(s)
public final static int SELECTION = 3; Sv!JA#Ag
public final static int SHELL = 4; ==EB\>g|
public final static int QUICK = 5; 4u#TKr.
public final static int IMPROVED_QUICK = 6; @I#uv|=N
public final static int MERGE = 7; P+DIo7VTX
public final static int IMPROVED_MERGE = 8; dj{~!}
public final static int HEAP = 9; bbT$$b-
DTHWL
public static void sort(int[] data) { P=Su)c
sort(data, IMPROVED_QUICK); z#2n+hwE
} |^"0bu"
private static String[] name={ S:1g(f*85
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,(NN)Oj
}; h=B=
J
>~_)2_j
private static Sort[] impl=new Sort[]{ eg24.W9c
new InsertSort(), N! I$Qtr,
new BubbleSort(), R[OXYHu
new SelectionSort(), L2OR<3*|Av
new ShellSort(), J M`[|"R%
new QuickSort(), Rx?ze(
new ImprovedQuickSort(), I
moxg+u
new MergeSort(), my#\(E+
new ImprovedMergeSort(), R[@}Lg7+v
new HeapSort() X!m
lC51
}; ilAhw4A
13+.>
public static String toString(int algorithm){ >T-4!ZvS\j
return name[algorithm-1]; YLuf2ja}X
} Y(R.<LtY
egVKAR-
public static void sort(int[] data, int algorithm) { zE~Xxp
impl[algorithm-1].sort(data); rR
8 6D
} zjOOEvi
cQm4q19
public static interface Sort { K~B
public void sort(int[] data); =}.gU WV
} P>(FCX
;; ;=)'o
public static void swap(int[] data, int i, int j) { ?:G 3U\M
int temp = data; c3r`T{Kf
data = data[j]; b`@J"E}
data[j] = temp; Je}0KW3G9L
} +wxsAGy_j
} 7Gy:T47T\@