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。 -DP*q3
插入排序: $5AC1g'
p3c"ZPO~z
package org.rut.util.algorithm.support; %r%So_^
i|]7(z#OyI
import org.rut.util.algorithm.SortUtil; R(k}y,eh.`
/** P7:d ly[,q
* @author treeroot /b5>Qp
* @since 2006-2-2 6<X%\[)n
* @version 1.0 0,_b)
*/ lCJ6Ur;
public class InsertSort implements SortUtil.Sort{ oFCgu{\kt
_X4!xbP
/* (non-Javadoc) b9~A-Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3`*Kav>"
*/ k$N0lR4:p
public void sort(int[] data) { 48O~Jx,
int temp; /c` ^iPb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C!+I>J{4f
} p[9s<lEh
} |mhKI is U
} eQUe
>*
+5!&E7bcd
} {u"8[@@./
Apj;
冒泡排序: H4:&%"j7
s$w;q\1z
package org.rut.util.algorithm.support; LlHa5]E@6
edipA
P~!
import org.rut.util.algorithm.SortUtil; kJ{+M] pW
%Jp|z? [/
/** vDFGd-S
* @author treeroot AiP!hw/V$
* @since 2006-2-2 /vxm"CJR
* @version 1.0 os4{0Mxu
*/ ml6u1+v5
public class BubbleSort implements SortUtil.Sort{ Ag9?C*
OGOND,/R?/
/* (non-Javadoc) [1_A8s){u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vi*e@IP/
*/ 8R/dA<Ww
public void sort(int[] data) { 3BG>Y(v
int temp; E{?au]y$J
for(int i=0;i for(int j=data.length-1;j>i;j--){ t$J.+} }I
if(data[j] SortUtil.swap(data,j,j-1); 3B0PGvCI1
} cA)[XpQ:+W
} oDn|2Sdqd
} W/fuKGZi_
} jQ\zG J3
QA3/
} o`n$b(VZ
EON:B>2a
选择排序: `d\r;cE%lm
W$0^(FH[
package org.rut.util.algorithm.support; W3H+.E
HCWNo
import org.rut.util.algorithm.SortUtil; Y}s@WJ
S >yLqPp
/** [ sF(#Y:I
* @author treeroot G2Vv i[c
* @since 2006-2-2 P 43P]M2
* @version 1.0 0[Ht_qxb
*/ rx0~`cVV:
public class SelectionSort implements SortUtil.Sort { -' g*^
au7.4ln>Y
/* v&a4^s
* (non-Javadoc) W,XTF
* Djq!P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3^?ZG^V
*/ 30>3 !Xqa
public void sort(int[] data) { ,m_WR7!$E
int temp; ZfrVjUB
for (int i = 0; i < data.length; i++) { n/~A`%E@
int lowIndex = i; zCv"]%
for (int j = data.length - 1; j > i; j--) { bi[IqU!9
if (data[j] < data[lowIndex]) { C;+h.;}<D
lowIndex = j; MUnEuhXTr
} [F!Y%Zp
} w[tmCn+
SortUtil.swap(data,i,lowIndex); }e2VY
} vS\Nd1~ ?
} SAYLG
ZJPmR/OV_
} HpZ1xT
N@ \&1I`c$
Shell排序: EU7|,>a
V!v:]E
package org.rut.util.algorithm.support; f| _u7"OX
5"XC$?I<}
import org.rut.util.algorithm.SortUtil; 7%f&M>/
L){iA-k;Ec
/** \K`L3*cBKK
* @author treeroot 5GA C`}}
* @since 2006-2-2 ,R%q}IH#
* @version 1.0
]^'@[<
*/ [e[<p\]
public class ShellSort implements SortUtil.Sort{ k:jSbbQ
?;[w" `"
/* (non-Javadoc) Gmwf4>"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2 3OC2|
*/ 0}!\$"|D
public void sort(int[] data) { *Kdda}
J+
for(int i=data.length/2;i>2;i/=2){ p
sL?Y
for(int j=0;j insertSort(data,j,i); #(An6itl
} IxLhU45
} q9Y9w(
insertSort(data,0,1); ^nbnbU4'
} iQDx{m3]
{|I;YDA
/** hGpv2>M
* @param data y;_% W
* @param j Pj}66.
* @param i VD_$$Gn*q
*/ -py@DzK
private void insertSort(int[] data, int start, int inc) { FEVEp
int temp; Tg!m`9s+
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~e6Brq
} ;)N>t\v
} '>r7V
} EoK~S\dS
'!/<P"5t
} KQB3m"
0c} }Q
快速排序: yKO`rtP
+$g}4
package org.rut.util.algorithm.support; %CK^Si%+
^fZ&QK
import org.rut.util.algorithm.SortUtil; (sh)TBb5
?@E!u|]K
/** E?_Z`*h
* @author treeroot gNt(,_]ZR
* @since 2006-2-2 ZYC<Wb)I
* @version 1.0 1t)il^p4[;
*/
` @nl
public class QuickSort implements SortUtil.Sort{ Q ]}Hd-
}GeSu|m(
/* (non-Javadoc) Y1]n^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rqY`8Ry2M
*/ z11O F
public void sort(int[] data) { r-:Uz\gM
quickSort(data,0,data.length-1); iof-7{+3_
} q
FAT]{{
private void quickSort(int[] data,int i,int j){ N;\'N
ne
int pivotIndex=(i+j)/2; AvfNwE
file://swap y&V@^"`
SortUtil.swap(data,pivotIndex,j); 9I4K}R
rk #sy$
int k=partition(data,i-1,j,data[j]); BocSwf;v.
SortUtil.swap(data,k,j); )ubiB^g'm
if((k-i)>1) quickSort(data,i,k-1); gP;&e:/3
if((j-k)>1) quickSort(data,k+1,j); Q)IKOt;N]
5~>z h
} ZzSz%z_sE
/** 8uWa=C)
* @param data 0tXS3+@n=
* @param i ' ~8KSF*!p
* @param j 0N$v"uX@
* @return abyo4i5T
*/ ME*LHr,
private int partition(int[] data, int l, int r,int pivot) { zzX_q(:S
do{ b45-:mi!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~{jcH
SortUtil.swap(data,l,r); U
H*r5o3
} d~i+
I5
while(l SortUtil.swap(data,l,r); NfjE`
return l;
K~R`%r_
} z*a:L} $
2+e}*&iQpp
} nCdR EXw
c9&xe"v
改进后的快速排序: oC0qG[yp9S
njputEGX
package org.rut.util.algorithm.support; >&}%+r\
>s<^M|S07
import org.rut.util.algorithm.SortUtil; ivN&HAxI@
f=WDR m]
/** 0"f\@8r(
* @author treeroot G;l_|8<t#\
* @since 2006-2-2 .oeX"6K
* @version 1.0 oU.R2\Q
*/ kZmpu?P
public class ImprovedQuickSort implements SortUtil.Sort { l4uMG]m
(2$p{Uf
private static int MAX_STACK_SIZE=4096; HK2[]G
private static int THRESHOLD=10; ?gt l )q
/* (non-Javadoc) {+Rog/;S'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }E50>g
*/ h eV=)8
public void sort(int[] data) { ^LoUi1j
int[] stack=new int[MAX_STACK_SIZE]; 6\q]rfQ
rE.;g^4p
int top=-1; RwpdRBb
int pivot; D$I5z.a
int pivotIndex,l,r; wNpTM8rfU#
Y,^@P
stack[++top]=0; ).`1+b
stack[++top]=data.length-1; jK& h~)
5>D>% iaHv
while(top>0){ Q7jb'y$ozO
int j=stack[top--]; h7lDHIQf
int i=stack[top--]; "hH.#5j
KUlp"{a`,K
pivotIndex=(i+j)/2; 3sy (vC
pivot=data[pivotIndex]; ;;6uw\6
O
!Fd~~v
SortUtil.swap(data,pivotIndex,j); RAgg:3^
C26>BU<
file://partition 3u*4o=4e
l=i-1; \o*5
r=j; }HFN3cq;C
do{ 'h|DO/X~L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); P2#XKG
SortUtil.swap(data,l,r); K8GP@yD]M
} nxnv,AZG
while(l SortUtil.swap(data,l,r); W{6|tx)
SortUtil.swap(data,l,j); Y5- F@(
$5aV:Z3P
if((l-i)>THRESHOLD){ z[L8$7L
stack[++top]=i; N"Zt47(
stack[++top]=l-1; 0"
} Nfrw0b
if((j-l)>THRESHOLD){ 1WxK#c-)
stack[++top]=l+1; $P/~rZ@M@
stack[++top]=j; Vc\MV0lr
} rWa2pO
!Qu"BF
} &=] ~0$
file://new InsertSort().sort(data); N8F~8lTi
insertSort(data); IP xiV]c
} 'YmIKIw
/** p6>Svcc
* @param data 8lvV4yb
*/ g+vva"
private void insertSort(int[] data) { R O+GK`J
int temp; Lo{
E:5q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G|!Tj X7s
} |"ls\ 7
} Yvw(tj5_5
} %Nlt H/I
M ?Y;a5{
} ,8U&?8l
snE8 K}4
归并排序: [=6]+V83M
x<tb
package org.rut.util.algorithm.support; s~ a"4~f
f-vCm 5f
import org.rut.util.algorithm.SortUtil; Dp,L/1GQ8
X(
\AB
/** o=1Uh,S3R
* @author treeroot h7G"G"
* @since 2006-2-2 V_:1EBzz
* @version 1.0 4;e5H_}Oo
*/ p& y<I6a,
public class MergeSort implements SortUtil.Sort{ AYqX|
ey7 f9
/* (non-Javadoc) +h|`/ &,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %(3|R@G.
*/ +"\sc;6m.
public void sort(int[] data) { P+@/O
int[] temp=new int[data.length]; t<.)Z-Ii
mergeSort(data,temp,0,data.length-1); n{n52][J]
} dk[!V1x4\
yj 3cyLXw
private void mergeSort(int[] data,int[] temp,int l,int r){ 5d Eh7XL
int mid=(l+r)/2; SYAyk
if(l==r) return ; Pr':51(
mergeSort(data,temp,l,mid); Q{s H3Y#l
mergeSort(data,temp,mid+1,r); #xsE3Wj-X
for(int i=l;i<=r;i++){ ##,a0s^
temp=data; {Z(h.de
} V\ZG d+?
int i1=l; UOv+T8f=
int i2=mid+1; !Q2d(H>
for(int cur=l;cur<=r;cur++){ XRM_x:+]
if(i1==mid+1) $v4.sl:x
data[cur]=temp[i2++]; JFcLv=U
else if(i2>r) Qp)v?k ]
data[cur]=temp[i1++]; Vz~{UHH6
else if(temp[i1] data[cur]=temp[i1++]; ?8npG]L)
else tU }h~&M
data[cur]=temp[i2++]; @K &GJ
} B3pCy~*5
} Si2k"<5U
@>r._~
} >c1qpk/
`x+ B+)0X
改进后的归并排序: *'Sd/%8{
n`? py
package org.rut.util.algorithm.support; !,wIQy_e4
o5Dk:Bw
import org.rut.util.algorithm.SortUtil; x[FJgI'r
lHN5Dr
/** sXLq*b?
* @author treeroot u@Ih GME
* @since 2006-2-2 \pa"%c)
* @version 1.0 ]R+mKUZ9
*/ {2O1"|s ,
public class ImprovedMergeSort implements SortUtil.Sort { gh/EU/~d
a@_4PWzF:
private static final int THRESHOLD = 10; ~8'sBT
-^&<Z
0m
/* Zi *2nv'
* (non-Javadoc) kvL=>
A
* !j9t*2m[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) epA:v|S
*/ ;5]Lf$tZ
public void sort(int[] data) { )Kc<j!8-[
int[] temp=new int[data.length]; $SlIr<'*"
mergeSort(data,temp,0,data.length-1); %f&/E"M
} K0u|U`
/ C:Y94B-z
private void mergeSort(int[] data, int[] temp, int l, int r) { m ifxiV
int i, j, k; \r/rBa\
int mid = (l + r) / 2; ? ^0:3$La
if (l == r) Z)I+@2
return; 29;?I3<
*
if ((mid - l) >= THRESHOLD) G?L HmTHg
mergeSort(data, temp, l, mid); q$0*b]=E
else Mo|;'+
insertSort(data, l, mid - l + 1); k0OYJ/
if ((r - mid) > THRESHOLD) Y+kfBvxyf
mergeSort(data, temp, mid + 1, r); %|s; C
else }n]Ng]KM`
insertSort(data, mid + 1, r - mid); ;,hwZZA
iw3FA4{(
for (i = l; i <= mid; i++) { >nJ\BPx
temp = data; !y\'EW3|G
} }5ret
for (j = 1; j <= r - mid; j++) { Gw}%{=D9
temp[r - j + 1] = data[j + mid]; n<Z({\9&H
} tIWmp30S
int a = temp[l]; |6.l7u?d
int b = temp[r]; p2hB8zL
for (i = l, j = r, k = l; k <= r; k++) { =mO vs
if (a < b) { 2i)^!c
data[k] = temp[i++]; bg!/%[ {M
a = temp; W,K;6TZhh
} else { Ansk,$
data[k] = temp[j--]; _zR+i]9
b = temp[j]; +Zb;Vn4
} (of#(I[m7
} qrb[-|ie&
} !]"@kl%
sfpZc7
/** Q)~aiI0
* @param data b:U$x20n$
* @param l g{7.r-uu
* @param i AuvkecuIh
*/ G~F b
private void insertSort(int[] data, int start, int len) { B7VH<;Z
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .yMEIUm
} OC_+("N
} n7zm>&
} R"-mKT}
} ^PDJ0k/u1
|J1$=s
堆排序:
vHgi<@u
>Rl"
package org.rut.util.algorithm.support; E~DQ-z
uu-PJTNZ
import org.rut.util.algorithm.SortUtil; -"R2
?j'7l=94A
/** DF&(8NoX~
* @author treeroot oK9( /v
* @since 2006-2-2 >
$O]Eu!
* @version 1.0 S4Pxc
]!
*/ (9tX5$e6N
public class HeapSort implements SortUtil.Sort{ EGGWrl}1
~IY%
/* (non-Javadoc) GF"hx`zyJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]{sU&GqBLe
*/ Ryl:a\
public void sort(int[] data) { "SNn^p59k
MaxHeap h=new MaxHeap(); |'e^QpU5
h.init(data); g!FuY/%+
for(int i=0;i h.remove(); [T|aw1SoN
System.arraycopy(h.queue,1,data,0,data.length); t=BUN
} N+9VYH"*
)~GmU9f
private static class MaxHeap{ #%pI(,o=
h8x MI
void init(int[] data){ AgWa{.`f:
this.queue=new int[data.length+1]; ADz ^\
for(int i=0;i queue[++size]=data; X@ --m6-
fixUp(size); ^3G{|JB!+
} kYM~d07 V
} |O{m2Fi
272q1~&
private int size=0; F6LH $C
-zCH**y%1
private int[] queue; w0[6t#$F
ZFA`s
qT
public int get() { 4`lLf
return queue[1]; [xbSYu,&
} {yBs7[Wn
1m'k|Ka
public void remove() { 59 h]UX=
SortUtil.swap(queue,1,size--); Ka'=o?'B5
fixDown(1); C0sX gM
} Vouvr<43o
file://fixdown 1ufp qqk
private void fixDown(int k) { J9..P&c\
int j; ISzqEi
while ((j = k << 1) <= size) { $6#CqWhI
if (j < size %26amp;%26amp; queue[j] j++; L,HhbTRca
if (queue[k]>queue[j]) file://不用交换 `A,-@`p
break; #{6{TFx\
SortUtil.swap(queue,j,k); l?\jB\,
k = j; <h!_>:2L
} =R^%(Py
} O24m;oHM
private void fixUp(int k) { 99]R$eT8
while (k > 1) { \/93Dz
int j = k >> 1; 0^v`T%|fTX
if (queue[j]>queue[k]) KsddA
break; 'Y?"{HZ
SortUtil.swap(queue,j,k); x/%aM1"X^
k = j; w{{gu1#]G
} .nO\kg oK
}
&U{#Kt5q
C/_ZUF(V
} 2d>z1%'
Oylf<&knF\
} 32(^Te]:
^Xz@`_I
SortUtil:
nI[os
0}<