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。 O eL}EVs8=
插入排序: KgR<E
QD%L0;j
package org.rut.util.algorithm.support; <^$<#Kd
rl0< Ls
import org.rut.util.algorithm.SortUtil; 2+X\}s1vN
/** *E{2J:`
* @author treeroot GQ
|Mr{.;
* @since 2006-2-2 t#2(j1
* @version 1.0 P
3'O/!
*/ x.q+uU$^
public class InsertSort implements SortUtil.Sort{ )&!&AlLn
:kGU,>BN
/* (non-Javadoc) nR`ov1RH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;amXY@RmH
*/ w}=5ElB
public void sort(int[] data) { &iV,W4
int temp; aE2.L;Tk?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t]-5 ]oI
} [p<w._b i
} ^yOZArc'r
} Phke`3tth
@*sWu_-Y%
} =%/)m:f!^
AF%@VLf
冒泡排序: GI&h`X5,e
KVJ_E!i
package org.rut.util.algorithm.support; f&
CBU
8w.YYo8`
import org.rut.util.algorithm.SortUtil; RU\/j%^
=AuR:Tx
/** k1!@^A
* @author treeroot Sy
'Dp9!|
* @since 2006-2-2 o>VVsH
* @version 1.0 G["c\Xux
*/ w`5xrqt@
public class BubbleSort implements SortUtil.Sort{ Ih"XV
cCxBzkH6
/* (non-Javadoc) ' MxrQ;|S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,S!azN=
*/ }+sT4'Ah>
public void sort(int[] data) { Er{>p|n=
int temp; yNTK .
for(int i=0;i for(int j=data.length-1;j>i;j--){ ej"+:."\e
if(data[j] SortUtil.swap(data,j,j-1); 0vw4?>Jf@
} VTH>
o>g
} j*vYBGD
} #Q
/Arq
} sQ\8>[]
*Em,*!
} ,KFapz!
tdu$pC6
选择排序: p }~qf
% oo2/aF
package org.rut.util.algorithm.support; pJtex^{!:
%ALwz[~]
import org.rut.util.algorithm.SortUtil; 1{JV}O
O`<KwUx !
/** j{Q9{}<e
* @author treeroot r%+V8o
* @since 2006-2-2 pS7w' H
* @version 1.0 Bf8jPa/
*/ v%iflCK
public class SelectionSort implements SortUtil.Sort { ;-qO'V:;
~W-PD
/* Uw7h=UQh
* (non-Javadoc) ~
(jKz}'~U
* T]c%!&^_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lx7Q.su'
*/ &:`U&06q
public void sort(int[] data) { (P:<t6;+
int temp; #n8IZ3+
for (int i = 0; i < data.length; i++) { &*aIEa^
int lowIndex = i; 6g)GY"49
for (int j = data.length - 1; j > i; j--) { Nb'''W-iu
if (data[j] < data[lowIndex]) { V]db'qB\
lowIndex = j; VB*oGG
} 2V#>)R#k
} 6l:qD` _
SortUtil.swap(data,i,lowIndex); D-._z:_
} +O?KNZ
} =7m)sxj]w
~o~!+`@q
} pWJFz-
V:
TM]
Shell排序: L bmawi^
JVSA&c%3
package org.rut.util.algorithm.support; VG
;kPzze
"[ZB+-|[0
import org.rut.util.algorithm.SortUtil; /x
p|
}xh$T'M8
/** oc >{?.^
* @author treeroot ,1+y/{S
* @since 2006-2-2 )`O~f_pIC
* @version 1.0 .0`m\~ L
*/ 8p:e##%
public class ShellSort implements SortUtil.Sort{ CmoE_8U>
v: OR
/* (non-Javadoc) /^#;d
UB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {C N~S*m
*/ 4?q<e*W
public void sort(int[] data) { >]vlkA(
for(int i=data.length/2;i>2;i/=2){ 2OVRf0.R~
for(int j=0;j insertSort(data,j,i); waj0"u^#
} =E#%'/ A;c
} 2KYw}j|5
insertSort(data,0,1); S(*sw
0O@+
} %_%Q8,W
.Z
`av n
/** hRD=Y<>A
* @param data U!*M*s
* @param j _)>_{Pm
* @param i WGZ9B^A
*/ jYmR
private void insertSort(int[] data, int start, int inc) { %|q>pin2
int temp; sl`s_$J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~ls[Sl@
} g'n7T|h
~
} 9\mLW"
} &&8IU;J
`n@*{J8
} 6"J?
#
q!u~jI9j
快速排序: n%o5kVx0
R?"q]af~
package org.rut.util.algorithm.support; SVh 7zh
\kMefU
import org.rut.util.algorithm.SortUtil; !W}9no
"AsKlKz{B
/** eo?;`7
* @author treeroot o.!~8mD
* @since 2006-2-2 7`zHX&-W
* @version 1.0 ?IqQ-C)6D
*/ OuID%p"O
public class QuickSort implements SortUtil.Sort{ ogHCt{'
fPR1f~r
/* (non-Javadoc) `tA"
}1;ka
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #mCL) [
*/ ~5%W:qwQ
public void sort(int[] data) { xqG[~)~
quickSort(data,0,data.length-1); *U,@q4
} :*Z4yx
private void quickSort(int[] data,int i,int j){ 4gz
H8sF
int pivotIndex=(i+j)/2; K<SyC54
file://swap ( u\._Gwsx
SortUtil.swap(data,pivotIndex,j); 7e|s
wJ>4
0zlb0[
int k=partition(data,i-1,j,data[j]); |@
s,XS
SortUtil.swap(data,k,j); C.Kh[V\Ut
if((k-i)>1) quickSort(data,i,k-1); i]YV {
if((j-k)>1) quickSort(data,k+1,j); %,}A@H,
-w}]fb2Q>
} C'.L20qW
/** Bn#?zI
* @param data j7$e28|_n
* @param i
!sQY&*
* @param j ZojIR\F^
* @return ff,pvk8N5
*/ _VRpI)mu
private int partition(int[] data, int l, int r,int pivot) { Vt %bI0#
do{ \IV1j)I"u
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0ghGBuv1s
SortUtil.swap(data,l,r); }Qn&^[[miL
} Dwr)0nk
while(l SortUtil.swap(data,l,r); F;4vPbH+
return l; )U7t
} a!7A_q8M
?(Dq ?-.
} VM
GS[qrG
RKHyw08
改进后的快速排序: (2J: #
eg\v0Y!rI
package org.rut.util.algorithm.support; cl[BF'.H
5\5/
import org.rut.util.algorithm.SortUtil; Y)0*b5?1r
DS.RURzd{r
/** A}G7l?V&
* @author treeroot /YW>*?"N
* @since 2006-2-2 CrC^1K
* @version 1.0 ]@j*/IP
*/ %Gz0^[+
public class ImprovedQuickSort implements SortUtil.Sort { )t0$qd ]
Vd,jlt.t
private static int MAX_STACK_SIZE=4096; rzhWw-GY
private static int THRESHOLD=10; J%v=yBC2
/* (non-Javadoc) +%T\`6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
Ch&a/S}
*/ ]'!f28Ng-
public void sort(int[] data) { 0%&1\rm+j
int[] stack=new int[MAX_STACK_SIZE]; @5=oeOg36
d6}r#\
int top=-1; D0&,?
int pivot; Z0x ar]4V
int pivotIndex,l,r; fi-WZ
a
oD`=I*<
stack[++top]=0; z1PBMSG
stack[++top]=data.length-1; Q]Y*K
A-Sv;/yD_
while(top>0){ $2oTkOA
int j=stack[top--]; "bFTk/
int i=stack[top--]; u)X=Qm)
r?+%?$
pivotIndex=(i+j)/2; H*RC@O_hv
pivot=data[pivotIndex]; =x%dNf$e{W
nhB1D-
SortUtil.swap(data,pivotIndex,j); b#uL?f
@|
M|+k3
file://partition @Lpq~ 1eZB
l=i-1; \\PjKAsh
r=j; nrL9
E'F'
do{ |% F=po>w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~P*6ozSYpY
SortUtil.swap(data,l,r); 3m]4=
} \8)U!9,$nn
while(l SortUtil.swap(data,l,r); lP[w?O
SortUtil.swap(data,l,j); 5gH1.7i b
g`{;(/M+
if((l-i)>THRESHOLD){ 8{wwd:6
stack[++top]=i; 9oRy)_5Z(=
stack[++top]=l-1; /[a~3^Gs^
} q.KG^=10
if((j-l)>THRESHOLD){ 6Z>FTz_
stack[++top]=l+1; A>vBQN
stack[++top]=j; UldXYtGe
} ''q@>
O,+1<.;+
} $?
m9")
file://new InsertSort().sort(data); rXmn7;B}g
insertSort(data); *]ly0nP
} y?[ v=j*U
/** Pu7_
v
* @param data F3N?Nk/
*/ "Q}#^h]F
private void insertSort(int[] data) { ^ZvWR%
int temp; sv: 9clJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nno}e/zqf
} hv`~?n)D66
} N|8P)
} <":;+Ng+
dbwe?ksh
} :8L8q<U
<6EeD5{*
归并排序: ?x$"+,
i2@VB6]?
package org.rut.util.algorithm.support; }\z.)B4,
RJL2J]*S
import org.rut.util.algorithm.SortUtil; v6=RY<l"m
X\]L=>]C
/** l Q'I
* @author treeroot Pj#<K%Bz
* @since 2006-2-2 Gy9$wH@8
* @version 1.0 t9,\Hdo
*/ X\`_3=
public class MergeSort implements SortUtil.Sort{ K{x\4
g-Mj.owu=
/* (non-Javadoc) o9|nJ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X^T:8npxt
*/ q$ZHd
public void sort(int[] data) { G 3+.H
int[] temp=new int[data.length]; ?zeJ#i
mergeSort(data,temp,0,data.length-1); ^WHE$4U`
} C\S3Gs
_K`wG}YIE
private void mergeSort(int[] data,int[] temp,int l,int r){ RTvqCp
int mid=(l+r)/2; AJf4_+He
if(l==r) return ; 00G%gQXk,
mergeSort(data,temp,l,mid); S/}2; \Xm
mergeSort(data,temp,mid+1,r); b=g8eMm
for(int i=l;i<=r;i++){ GQ t8p[!
temp=data; d:ARf
} O-ew%@_
int i1=l; E[2m&3&
int i2=mid+1; N^#ZJoR
for(int cur=l;cur<=r;cur++){ V^7V[(~`
if(i1==mid+1) bt"W(m&f
data[cur]=temp[i2++]; Q;[,Q~c[u
else if(i2>r) `e(c^ z#
data[cur]=temp[i1++]; qOe+ZAJ{%N
else if(temp[i1] data[cur]=temp[i1++]; H;?{BV
else j.C`U(n}`
data[cur]=temp[i2++]; :9O#ObFR
} {E
p0TVj`
} A'j;\
`1
ql<i] Y
} cWEE%
a;rdQ>
改进后的归并排序: @>d*H75
W0y '5`
package org.rut.util.algorithm.support; KX!T8+Y
= 6tHsN23
import org.rut.util.algorithm.SortUtil; %dRo^E1p
5\N(PL
/** iWei
* @author treeroot O}tZ - 'T
* @since 2006-2-2 VO,!x~S!
* @version 1.0 ZRv*!n(Ug<
*/ D!Q">6_"z
public class ImprovedMergeSort implements SortUtil.Sort { CKtB-a
&+a9+y
private static final int THRESHOLD = 10; Fw/6?:C}O6
C+?Hm1
/* 1LqoF{S:
* (non-Javadoc) Ipf|")*
* !,l9@eJQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,LTH;<zB)
*/ VGfMN|h
public void sort(int[] data) { d_AK`wR
int[] temp=new int[data.length]; yW+yg{Gg:
mergeSort(data,temp,0,data.length-1); +!k&Yje
} H9KKed47d/
3 j!3E
private void mergeSort(int[] data, int[] temp, int l, int r) { nIAx2dh?
int i, j, k; 8yRJD[/S
int mid = (l + r) / 2; m$`RcwO
if (l == r) 6Se?sHC>
return; V_>\9m
if ((mid - l) >= THRESHOLD) ji1viv
mergeSort(data, temp, l, mid); sJ#4(r`
else /|r^W\DV&x
insertSort(data, l, mid - l + 1); =7-9[ {
if ((r - mid) > THRESHOLD) j;%-fvd;
mergeSort(data, temp, mid + 1, r); oE<`VY|
else Wc,_RN-
insertSort(data, mid + 1, r - mid); x1Lb*3Fe
LG-y]4a}
for (i = l; i <= mid; i++) { wQv'8A_}
temp = data; ie;]/va
} rW0kA1=E
for (j = 1; j <= r - mid; j++) { ZZWD8AX
temp[r - j + 1] = data[j + mid]; cnSJ{T
} sqla}~CiX
int a = temp[l]; V7GRA#|
int b = temp[r]; flk=>h|
for (i = l, j = r, k = l; k <= r; k++) { rJPb 3F
if (a < b) { K2he4<
data[k] = temp[i++]; 6^%UU
o%
a = temp; N<f"]
} else { @WJgWJm
data[k] = temp[j--]; /nyUG^5#{
b = temp[j]; 4S,`bnmB
} ^cV;~&|.Xk
} [!!o-9b
} if}-_E<F
wkP#Z"A0~
/** (2$(
?-M
* @param data I{
HN67O
* @param l aki_RG>U'
* @param i HKF H/eV
*/ Kpb#K[(]&
private void insertSort(int[] data, int start, int len) { =fu
:@+
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w<zIAQN
} Ks=>K(V6
} h lkn%
} W;_nK4$%'
} [OHxonU
|\QgX%
堆排序: Rz(QC\(
9!T[Z/}T
package org.rut.util.algorithm.support; *j]9vktH
eL^.,H0
import org.rut.util.algorithm.SortUtil; M9EfU
Lk~ho?^`
/** OTC!wI
g
* @author treeroot K|Ld,bq
* @since 2006-2-2 pcau}5 .
* @version 1.0 !g Z67
*/ thV>j9'
public class HeapSort implements SortUtil.Sort{ RMX:9aQ3F
6;C3RU]
/* (non-Javadoc) UQ'\7OS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #~SP)Ukp
*/ 1=#q5dZ]
public void sort(int[] data) { 7#@cz5Su
MaxHeap h=new MaxHeap(); S?RN?1
h.init(data); cj+ FRG~u
for(int i=0;i h.remove(); j]*j}%hz
System.arraycopy(h.queue,1,data,0,data.length); 9&upujVS
} f&}k^>N#3
+SsK21f"r
private static class MaxHeap{ m0LTx\w!
|3F02
void init(int[] data){ A6GE,FhsG
this.queue=new int[data.length+1]; +u!0rLb
for(int i=0;i queue[++size]=data; XS`M-{f`
fixUp(size); s >e=?W
} Wi[ ~fI8^!
} "J+3w
~2<7ZtV=
private int size=0; ]d,S749(s
>2~+.WePu
private int[] queue; uvtF_P/
lrnyk(M}Q.
public int get() { *F
?8c
return queue[1]; U"q/rcA
} )E6;-rD0^+
b`)){LR
public void remove() { m_=$0m J$
SortUtil.swap(queue,1,size--); ^dP KDrKxh
fixDown(1); *:>"q ej
} mocI&=EF2X
file://fixdown D@.tkzU@E
private void fixDown(int k) { 7h6,c /<
int j; VUVaaOmO
while ((j = k << 1) <= size) { Ynp{u`?
if (j < size %26amp;%26amp; queue[j] j++; ,oaw0Vw
if (queue[k]>queue[j]) file://不用交换 &C_'p {G
break; AFc$%\s4
SortUtil.swap(queue,j,k); 0TN;86Mo
k = j; p[<Dk$7K
} QFg sq{
} 0GB:GBhZ
private void fixUp(int k) {
=i_-F$pV
while (k > 1) { v3}L`dyh3
int j = k >> 1; Hu.t 3:w
if (queue[j]>queue[k]) ]4h92\\965
break; SV:4GVf
SortUtil.swap(queue,j,k); HHq_P/'
k = j; G2t;DN(
} (4'$y`Z
} 'rMN=1:iu"
g)s{IAVx
} BYs-V:
c7tfRq
n+
} zunV<2~(2}
B*4}GPQ
SortUtil: x%+aKZ(m)
?_"+^R z
package org.rut.util.algorithm; j7sKsbb
0G7K8`a
import org.rut.util.algorithm.support.BubbleSort; \2ZPj)&-E
import org.rut.util.algorithm.support.HeapSort; si&S%4(
import org.rut.util.algorithm.support.ImprovedMergeSort; ]xX$<@HR
import org.rut.util.algorithm.support.ImprovedQuickSort; 0KMctPT]p
import org.rut.util.algorithm.support.InsertSort; 9Xl`pEhC
import org.rut.util.algorithm.support.MergeSort; y]J89
import org.rut.util.algorithm.support.QuickSort; WcHgBbNe
import org.rut.util.algorithm.support.SelectionSort; eFpTW&9n
import org.rut.util.algorithm.support.ShellSort; h3*Zfl<]
3pK*~VK
/** L:_bg8eD#
* @author treeroot u:m]CPz
* @since 2006-2-2 Z9575CI<
* @version 1.0 9:`(Q3Ei
*/ *Ho/ZYj3
public class SortUtil { (T!9SU
public final static int INSERT = 1; BNd^qB ?
public final static int BUBBLE = 2; \e!vj.PU
public final static int SELECTION = 3; Ku\Y'ub
public final static int SHELL = 4; 0A,]$Fzt
public final static int QUICK = 5; F)s{P Cl
public final static int IMPROVED_QUICK = 6; w3=%*<
public final static int MERGE = 7; AtF3%Zv2
public final static int IMPROVED_MERGE = 8; pGf@z:^{*-
public final static int HEAP = 9; {e+-vl
v2H#=E4cZ#
public static void sort(int[] data) { TF 'U
sort(data, IMPROVED_QUICK); <$ F\Nk|x
} KN tt
private static String[] name={ cx}Q2S
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $/=nU*pd
}; 4m*M,# mV
GN!qyT
private static Sort[] impl=new Sort[]{ F)+{AQL
new InsertSort(), d}JP!xf%
new BubbleSort(), 6KVnnK
new SelectionSort(), /ODXV`3QYI
new ShellSort(), mp9{m`Jb*
new QuickSort(), IkrF/$r
new ImprovedQuickSort(), u0#}9UKQ
new MergeSort(), H ,+?
t
new ImprovedMergeSort(), *+uHQgn(
new HeapSort() !-N6l6N
}; X6 6VU
?0YCpn
public static String toString(int algorithm){ x.3J[=z=>
return name[algorithm-1]; 0pJ
":Q/2)
} ZTU&,1Y ;
rAs,X
public static void sort(int[] data, int algorithm) { QHWBAGA
impl[algorithm-1].sort(data); Pb8^ b
} $<^u^q37u
"Kc>dJ@W
public static interface Sort { wMdal:n^
public void sort(int[] data); GrTulN?
} `)T~psT
es>W$QKlo
public static void swap(int[] data, int i, int j) { yv\#8I:qh
int temp = data; 9*E7}b,
data = data[j]; a)S+8uU
data[j] = temp; ]~6_ WE8L
} $Bj;D=d@V
} ^2$ lJ