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。 Z3TCi7,m
插入排序: %Y ZCdS
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package org.rut.util.algorithm.support; swj\X,{
m=6?%'
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import org.rut.util.algorithm.SortUtil; v)du]
/** 9Ad%~qciY
* @author treeroot 1!1JT;gG^9
* @since 2006-2-2 |Gz<I
* @version 1.0 ([q>.[WbH]
*/ G ky*EY
public class InsertSort implements SortUtil.Sort{ m-O*t$6
j_rO_m <8
/* (non-Javadoc) :(~<BiqR(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nN{DO:_o
*/ RkG?R3e
public void sort(int[] data) { \;0pjxq=
int temp; F\JS?zt2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %DiQTg7V,
} QgU]3`z"
} W@AHE?s6g
} w@-G_-6W
Hj
>fg2/
} %h ;oi/pe
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冒泡排序: r!!uA1!7
7%"|6dw
package org.rut.util.algorithm.support; fh =R
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import org.rut.util.algorithm.SortUtil; D/=05E%[81
k$%{w\?Jf
/** Gk5'|s
* @author treeroot ]#M"|iTR
* @since 2006-2-2 e2=}qE7
* @version 1.0 jF;<9-m&
*/ Q I";[
public class BubbleSort implements SortUtil.Sort{ )$^xbC#j`3
3/vtx9D
/* (non-Javadoc) \/1~5mQ+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2tK~]0x
*/ rmw}Ui"
public void sort(int[] data) { 2Di~}* 9&
int temp; ByjfPb#
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]B(}^N>WH
if(data[j] SortUtil.swap(data,j,j-1); l#cVQ_^"
} Kc]cJ`P4.
} mdL T7
} DH.`
} |E K6txRb
RbUir185Y
} +DSbr5"VlB
Qf0P"s`
选择排序: w31O~Ve
^kNVQJiZyG
package org.rut.util.algorithm.support; =Jl\^u%H(x
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import org.rut.util.algorithm.SortUtil; ?5" >5 0
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/** mL1ZSX
o!
* @author treeroot \&vXp"-@
* @since 2006-2-2 EUw4$Jt^p
* @version 1.0 1<@lM8&.kO
*/ 7vgRNzZoq
public class SelectionSort implements SortUtil.Sort { iOa<=
3SWDPy
/* z]g#2xD2
* (non-Javadoc) {0j,U\ kb
* X{xkXg8h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u*l>)_HD
*/ rIPg,4y*S!
public void sort(int[] data) { fQ~~%#z1
int temp; 5%(
for (int i = 0; i < data.length; i++) { w#9.U7@.
int lowIndex = i; f|~'(~Sr
for (int j = data.length - 1; j > i; j--) { IJ.H/l}h
if (data[j] < data[lowIndex]) { `ci
P
lowIndex = j; Onqapm0
} hlyh8=Z6o
} LGy62 y$
SortUtil.swap(data,i,lowIndex); 0e>?!Z
E
} TH4f"h+B3"
} B_Wig2xH0
ShRMzU
} hK4ww"-
=:T"naY(
Shell排序: P `<TO
9J%O$sF
package org.rut.util.algorithm.support; yT%<
t
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import org.rut.util.algorithm.SortUtil; oBai9 [+
q:>`|~MX
/** DDIRJd<J
* @author treeroot "c~``i\G
* @since 2006-2-2 zhE4:g9v
* @version 1.0 q:vN3#=^qf
*/ n"iaE
public class ShellSort implements SortUtil.Sort{ M&zB&Ia"'
ZK{1z|
/* (non-Javadoc) jY9tq[~/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hQ%X0X,
*/ oVuIHb0w
public void sort(int[] data) { 5Mxl({oI]
for(int i=data.length/2;i>2;i/=2){ cJT_Qfxx
for(int j=0;j insertSort(data,j,i); % \v
} 4myikeUR_
} 5Q}HLjG8Z
insertSort(data,0,1); !b K;/)
} 4cm~oZ
:'t"kS
/** \py&v5J)s!
* @param data qYqd -R
* @param j 9%k4Ic%P
* @param i !
,]Fx
*/ Qmd2C&Xw
private void insertSort(int[] data, int start, int inc) { '#K~hep
int temp; ZnbpIJ8cV
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %D7^.
} M9Z9s11{H
} pOy(XUV9O
} S-6i5H"B&
|a1zJ_t4
} UGOe(JB
]w)uo4<^J
快速排序: (s1iYK
f:t5`c.
package org.rut.util.algorithm.support; y#ON=8l
'+|uv7|+v
import org.rut.util.algorithm.SortUtil; 6jal5<H
yh4%
/** B aCzN;)
* @author treeroot ^*NOG\BK@
* @since 2006-2-2 A?ESjMy(R
* @version 1.0 ^SUo-N''
*/ Mv%B#J
public class QuickSort implements SortUtil.Sort{ >]bS"S
dZJU>o'BG
/* (non-Javadoc) {=^<yK2q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) usugjx^p
*/ CwEb ?
public void sort(int[] data) { yK2>ou
quickSort(data,0,data.length-1); + L5
} 78mJ3/?rC
private void quickSort(int[] data,int i,int j){ FP6JfI8
int pivotIndex=(i+j)/2; fb]=MoiJ
file://swap 7z&^i-l.
SortUtil.swap(data,pivotIndex,j); )6he;+
w/0;N`YB
int k=partition(data,i-1,j,data[j]); 9Xh<vh8&
SortUtil.swap(data,k,j); ,(yaWd6
if((k-i)>1) quickSort(data,i,k-1); n<[H!4
if((j-k)>1) quickSort(data,k+1,j); -fz( ]d
{>&M:_`k
} KC\W6|NtGj
/** T6,6lll
* @param data
2IDn4<`
* @param i 6`'K M/
* @param j kdm@1x
* @return 7sJGB^vM
*/ }Oy/F
private int partition(int[] data, int l, int r,int pivot) { >F!X'#Iv
do{ ~;uW)
[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T6rjtq
SortUtil.swap(data,l,r); 49#?I:l
} 41XXL$
while(l SortUtil.swap(data,l,r); P6ugbq[x#e
return l; IC. R4-
} 6}mSA@4&
6<Zk%[7t
} kL}*,8s{
H,1Iz@W1
改进后的快速排序: #fe zUU
52Q~` t7F
package org.rut.util.algorithm.support; QTI^?@+N>
dC}4Er
import org.rut.util.algorithm.SortUtil; w>#.id[k
zU>bT20x/
/** ^#j{9FpPs
* @author treeroot ViG-tb
* @since 2006-2-2 =$%_asQJ
* @version 1.0 \o!B:Vb<
*/ -Ly A
public class ImprovedQuickSort implements SortUtil.Sort { EG!):P
771r(X?Fa
private static int MAX_STACK_SIZE=4096; {$-\)K
private static int THRESHOLD=10; _k5-Wd5Ypw
/* (non-Javadoc) }D#[yE,=\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1\Vp[^#Vx
*/ !%yd'"6Dl
public void sort(int[] data) { ez *O'U
int[] stack=new int[MAX_STACK_SIZE]; *&yt;|y
[IuF0$w=dj
int top=-1; |G>Lud
int pivot; a`QKNrA2
int pivotIndex,l,r; WPNvZg9*c
2k""/xMF'
stack[++top]=0; cX-)]D
stack[++top]=data.length-1; g(zoN0~
WO6; K]
while(top>0){ A&;Pt/#'
int j=stack[top--]; ;!N_8{
7r
int i=stack[top--]; RjQdlr6*
r)t-_p37
pivotIndex=(i+j)/2; >!2d77I
pivot=data[pivotIndex]; N u9+b"Wr
fyt`$y_E[
SortUtil.swap(data,pivotIndex,j); N]@e7P'9F
'WQ<|(:{
file://partition |-k~Fa
l=i-1; 5-X(K 'Q
r=j; s av
do{ aruT eJF
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0- -0+?
SortUtil.swap(data,l,r); C")NNs=
} yE),GJ-m\<
while(l SortUtil.swap(data,l,r); _:,U$W
SortUtil.swap(data,l,j); H;eOrX{GT
2(sq*!tX
if((l-i)>THRESHOLD){ 5 l(Q#pSX
stack[++top]=i; ) bGzsb1\
stack[++top]=l-1; q\6ZmKGnT
} N,NEg4 q[
if((j-l)>THRESHOLD){ )OcG$H NK
stack[++top]=l+1; *l4`2 eqZ
stack[++top]=j; Kf7v_T/
} ('.r_F
(|<.7K N
} 7Cj6Kw5k
file://new InsertSort().sort(data); Tn8GLn
insertSort(data); q!zsGf{
} 9gokTFoN
/** -{XXU )Z
* @param data Nt'u;0
*/ 5hbQUF
,Q
private void insertSort(int[] data) { F45UO%/P
int temp; zmMz6\ $
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^iq$zHbc0u
} +'!vm6
} V|8`]QW@
} {$mj9?n=v
#r_&Q`!eU
} #<|q4a{8
D#,P-0+%
归并排序: .)eX(2j\
LAwAFma>
package org.rut.util.algorithm.support; %@d~)f
*aF<#m v
import org.rut.util.algorithm.SortUtil; :X6A9jmd
$VCWc#
/** $w$4RQk3n
* @author treeroot 7EAkY`Op
* @since 2006-2-2 =-qv[;%&6
* @version 1.0 #I.Wmfz
*/ n7S~nk
public class MergeSort implements SortUtil.Sort{ 4^O'K;$leD
MzsDDP+h
/* (non-Javadoc) 7 n=fB#!*3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( nH3
*/ U0:tE>3`
public void sort(int[] data) { 2x7%6'
int[] temp=new int[data.length]; mmj6YQ0a
mergeSort(data,temp,0,data.length-1); ES#K'Lf
} IuQY~!
SrVJ Q~:>
private void mergeSort(int[] data,int[] temp,int l,int r){ `<L6Q2Y>j
int mid=(l+r)/2; {
+%S{=j
if(l==r) return ; ~^Y(f'{
mergeSort(data,temp,l,mid); U\ A*${
mergeSort(data,temp,mid+1,r); Lc<C1I 5=
for(int i=l;i<=r;i++){ W|FP j^*t
temp=data; L@{5:#-
} 'J`%[,@V
int i1=l; v&EHp{8Qd
int i2=mid+1; 3Yd)Fm
for(int cur=l;cur<=r;cur++){ G*|2qX"o
if(i1==mid+1) ?N|B, F
data[cur]=temp[i2++]; i}5
#n
else if(i2>r) f}'E|:Z 7k
data[cur]=temp[i1++]; n2+eC9I
else if(temp[i1] data[cur]=temp[i1++]; :h&*<!O2B`
else {]}}rx'|P
data[cur]=temp[i2++]; l%^'K%'b
} c!BiGw,;
} /L1qdkG
.hCOi<wB
} :B<lDcFKJ
5"[Qs|VjA6
改进后的归并排序: &OiJJl[9
l }?'U
package org.rut.util.algorithm.support; UUx0#D/U0C
,z?Re)qm
import org.rut.util.algorithm.SortUtil; 'lU9*e9
@,-xaZ[
/** $e! i4pM
* @author treeroot l\yFx
* @since 2006-2-2 U&6!2s-
* @version 1.0 * SG0-_S
*/ 7ST[XLwt%}
public class ImprovedMergeSort implements SortUtil.Sort { TCSm#?[B
u=I>DEe@c
private static final int THRESHOLD = 10; ]~z2s;J{/
ESZ6<!S
/* b
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A
* (non-Javadoc) SLc6]?
* xcz1(R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iaq0\d.[7
*/ 1e;^MzB"
public void sort(int[] data) { -,~n|ceI
int[] temp=new int[data.length]; (d[)U<
mergeSort(data,temp,0,data.length-1); ^z$-NSlI
} LmLV2f
oUm"qt_
private void mergeSort(int[] data, int[] temp, int l, int r) { WZ'3
int i, j, k; $+sNjwv^F
int mid = (l + r) / 2; N"b>]Ab] ;
if (l == r) `?Wak=]g
return; NwmO[pt+
if ((mid - l) >= THRESHOLD) gUCv#:
mergeSort(data, temp, l, mid); ,c6ID|\
else oSt-w{!
insertSort(data, l, mid - l + 1); EeKEw
Sg
if ((r - mid) > THRESHOLD) r}P{opn$t
mergeSort(data, temp, mid + 1, r); f;6a4<bz
else J%3%l5/
insertSort(data, mid + 1, r - mid); Z^AACKME
i` Es7 }
for (i = l; i <= mid; i++) { }`yIO"{8n
temp = data; MOyQ4<_
} un[Z$moN"
for (j = 1; j <= r - mid; j++) { #5T+P8
temp[r - j + 1] = data[j + mid]; +"a .,-f!
} ~)}npS;
int a = temp[l]; DL2gui3
int b = temp[r];
;KmSz 1A
for (i = l, j = r, k = l; k <= r; k++) { POc<
G^
if (a < b) { ~l-Q0wg
data[k] = temp[i++]; "}|n;:r
a = temp; ^zQ;8)ng
} else { U]fE(mpI9
data[k] = temp[j--]; pHY~_^B4&
b = temp[j]; R{3f5**0
} jGEUl=W
} )5Kzq6.
} JPgV7+{b[
'1=t{Rw
/** MZE8Cvq0
* @param data X#(?V[F]
* @param l x<"e} Oo
* @param i &@A(8(%
*/ dapQ5JT/
private void insertSort(int[] data, int start, int len) { 5A/G?
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8|?$KLz?F>
} G7`7e@{
} \<~[uv'
} Q5iuK#/
} `w]=xe
&M~*w~w`
堆排序: jGd{*4{3+
w@4q D
package org.rut.util.algorithm.support; uA:|#mO
iU{F\>
import org.rut.util.algorithm.SortUtil; c0u!V+V%
f>5{SoM
/** qr(SAIX"
* @author treeroot <O>r e3s
* @since 2006-2-2 9>qR6k?
* @version 1.0 waW2$9O
*/ A5+vz u^
public class HeapSort implements SortUtil.Sort{ PV>-"2n
OR4!73[I
/* (non-Javadoc) J
\1&3r|R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eM+]KG)}
*/ xe2Ap[Y'M
public void sort(int[] data) { _;{n+i[
MaxHeap h=new MaxHeap(); (D{Fln\
h.init(data); k#E D#']N
for(int i=0;i h.remove(); Q! ]
System.arraycopy(h.queue,1,data,0,data.length); v-X1if1%
} (H<S&5[
sn/^#Aa=N
private static class MaxHeap{ _{KQQ5k\
91r#lDR
void init(int[] data){ R|ViLt y
this.queue=new int[data.length+1]; Tv3Bej
for(int i=0;i queue[++size]=data; F>)u<f,C
fixUp(size); !Z,h5u\.w
} b-@VR
} ?Il$f_"B:
]6p?mBuQ
private int size=0; kp[+Iun?
I2qC,Nkk
private int[] queue; I)]wi%
2md1GWyP
public int get() { \q(RqD
return queue[1]; N0sf
V
} 4_8%ZaQ\.?
E:f0NV3"1
public void remove() { t*<.^+Vd
SortUtil.swap(queue,1,size--); *n N;!*J
fixDown(1); oJUVW"X6
} "44VvpQC
file://fixdown *;(LKRV
private void fixDown(int k) { B[!wo
int j; ATv.3cy
while ((j = k << 1) <= size) { UW<V(6P
if (j < size %26amp;%26amp; queue[j] j++; ?7'uo$
if (queue[k]>queue[j]) file://不用交换 /fWVgyW>6
break; k ;R*mg*K
SortUtil.swap(queue,j,k); Ti!j
k = j; D!ToCVos
} /);cl;"
} f:G Zb?Wyd
private void fixUp(int k) { dOqn0Z
while (k > 1) { "Git@%80
int j = k >> 1; [P]zdw
w#
if (queue[j]>queue[k]) Lf&p2p?~c
break; ?0WJB[/
SortUtil.swap(queue,j,k); `B"=\0
k = j; +n %uIv
} m\__Fl
} ZTWbe
;M{ @23?`
} :kfHILi
X5cl'J(j9
} KRf$VbuL
x^qmYX$'1b
SortUtil: ><viJ$i
>;dMumX
package org.rut.util.algorithm; @mW: FVI
aIpDf|~
import org.rut.util.algorithm.support.BubbleSort; D:e9609
import org.rut.util.algorithm.support.HeapSort; t;TMD\BU
import org.rut.util.algorithm.support.ImprovedMergeSort; Xa.Qt.C
import org.rut.util.algorithm.support.ImprovedQuickSort; p\wE})mu
import org.rut.util.algorithm.support.InsertSort; # nwEF QA
import org.rut.util.algorithm.support.MergeSort; n|Iy
import org.rut.util.algorithm.support.QuickSort; $U<so{xn%
import org.rut.util.algorithm.support.SelectionSort; b-'41d}Hn
import org.rut.util.algorithm.support.ShellSort; R)"Ds}1G
v9(->X'
/** 4*g`!~)
* @author treeroot H2l/9+
* @since 2006-2-2 ~z$vF
* @version 1.0 57Q^"sl
*/ IExo#\0'6
public class SortUtil { $(H%|Oyn
public final static int INSERT = 1; Ra}%:
public final static int BUBBLE = 2; \C5 YVl#
public final static int SELECTION = 3; k)UF.=$d
public final static int SHELL = 4; +N:K V}K
public final static int QUICK = 5; rP>iPDf
public final static int IMPROVED_QUICK = 6; 5m!FtHvm1
public final static int MERGE = 7; Cb7f-Eag
public final static int IMPROVED_MERGE = 8; >t&Frw/Bl
public final static int HEAP = 9; `$\g8Mo
4pq@o
public static void sort(int[] data) { X(U
CN0#
sort(data, IMPROVED_QUICK); ?~$0;5)QC
}
/L'r
L
private static String[] name={ TYGUB%A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V.vA~a
}; t&T0E.kh*X
&[f.;1+C
private static Sort[] impl=new Sort[]{ ~0,Utqy
new InsertSort(), dElOy?v
new BubbleSort(), -@X?~4Idz
new SelectionSort(), XZYpU\K
new ShellSort(), H'Bor\;[>
new QuickSort(), r t@Jw]az
new ImprovedQuickSort(), fpJM)HU
new MergeSort(), 5:6as^i:b
new ImprovedMergeSort(),
AC@WhL
new HeapSort() o7)<