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。 "}7K>|a
插入排序: >5/dmHPc
Y8m|f
package org.rut.util.algorithm.support; C([;JO
11[
*3S,XMS{O
import org.rut.util.algorithm.SortUtil; (G#)[0<fX
/** pSE"]N
* @author treeroot wMt?yc:X
* @since 2006-2-2 Y)c9]1qly
* @version 1.0 X]C-y,r[M
*/ kul&m|
public class InsertSort implements SortUtil.Sort{ ~;UK/OZ
)uwpeq$j7l
/* (non-Javadoc) {*
>$aI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^5=}Y>EJO
*/ ;?= ] ffa{
public void sort(int[] data) { \ts:'
int temp; G{+sC2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =zqOkC
h$
} PS`)6yn{_
} ?h1]s&^|2
} hP3I_I[qF}
a3HT1!M)
} UgSSZ05Lq
W
qci51y>#
冒泡排序: MCL?J,1?r
Y_Ej-u+>{
package org.rut.util.algorithm.support; #96E^%:zL
ecA0z
c~
import org.rut.util.algorithm.SortUtil; B
wtD!de$
COJqVC(#
/** w^G<]S{l
* @author treeroot }`f%"Z
* @since 2006-2-2 )w;XicT
* @version 1.0 q6H90Zb
*/ !rTh+F*
public class BubbleSort implements SortUtil.Sort{ 6D{|! i|r4
oIoJBn
/* (non-Javadoc) Iimz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f*W<N06EZ
*/ l:j9lBS
public void sort(int[] data) { [ {lF1+];@
int temp; {s=QwZdR
for(int i=0;i for(int j=data.length-1;j>i;j--){ aina6@S
if(data[j] SortUtil.swap(data,j,j-1); &IXr*I
} UbY-)9==
} :E4i@ O7%
} Wj.)wr!
} h!yF
7"
Dw4}T
} FT `y3~
C*kZ>mbc
选择排序: W`6nMFg
VIAj]Ul
package org.rut.util.algorithm.support; (zk'i13#6
EvTdwX.H
import org.rut.util.algorithm.SortUtil; e/#4)@]
1i bQ'bZ
/** *bmk(%g
* @author treeroot A){kitx-i)
* @since 2006-2-2 *% Vd2jW/
* @version 1.0 s)
V7$D
*/ KM< M^l_Q
public class SelectionSort implements SortUtil.Sort { si3i#l&.b_
qi7dcn@d
/* ?#pL\1"E
* (non-Javadoc) N<"_5
* L
G{N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7lR(6ka&/
*/ P1Re7/
public void sort(int[] data) { X*$ 7g;
int temp; fm&l0
for (int i = 0; i < data.length; i++) { RTLu]Bry
int lowIndex = i; .Zf#L'Rf
for (int j = data.length - 1; j > i; j--) { cl:*Q{(Cjk
if (data[j] < data[lowIndex]) { !Aunwq^
lowIndex = j; 99:`58G
} ]$0{PBndW
} ^row=5]E
SortUtil.swap(data,i,lowIndex); hLx*$Z>
} \
{"8(ELX
} Ls*.=ARq
oUltr
} ; bP7|
k(%RX_]C
Shell排序: clG3t
eC
rAP+nh ans
package org.rut.util.algorithm.support; OSfwA&
1;.}u=8
import org.rut.util.algorithm.SortUtil; 97F$$d54T
KC q3S
/** eA{,=,v)
* @author treeroot D!qtb6<.
* @since 2006-2-2 4.H!rkMM
* @version 1.0 h>bmHQ
*/ >s[}f6*2@
public class ShellSort implements SortUtil.Sort{ xv4nYm9
bTHJb pt*-
/* (non-Javadoc) ?G!^|^S*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z0g$+bhy
*/ F^A1'J
public void sort(int[] data) { +/x|P-
for(int i=data.length/2;i>2;i/=2){ ~X`vRSrH
for(int j=0;j insertSort(data,j,i); _IT,>#ba
} 8b6:n1<fn
} F^`sIrZvs
insertSort(data,0,1); P5] cEZ n
} *$ ^ME
nU`vj`K
/**
"thfd"-
* @param data szmjp{g0
* @param j Br-y`s~cP
* @param i #cjB <APY
*/ #BT=
K
private void insertSort(int[] data, int start, int inc) { %\:.rs^
int temp;
JhB{aW>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M&Ycw XV:Z
} v oC<
/}E
} |mMW"(~
} tkNuM0
':.d,x)
} qDcl;{L
*2;w;(-s
快速排序: ]S;e#u{QE
MzJ5_}
package org.rut.util.algorithm.support; "uZ'oN
8&dmH&
import org.rut.util.algorithm.SortUtil; 0Apvuf1
M{O2O(
/** 5
0~L(<
* @author treeroot s2w.V
O
* @since 2006-2-2 Ai#W.
n
* @version 1.0 #-e3m/>
*/ 8&`s wu&
public class QuickSort implements SortUtil.Sort{ xo^_;(;
(Ca\$p7/
/* (non-Javadoc) T3M 4r|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;[V`)d'
*/ fFSW\4JD=
public void sort(int[] data) { OP:;?Fs9`
quickSort(data,0,data.length-1); tb0s+rb
} 9H.E15B
private void quickSort(int[] data,int i,int j){ u7a4taM$d
int pivotIndex=(i+j)/2; 9%\q*
file://swap
;h
SortUtil.swap(data,pivotIndex,j); BMFpkK9|
I"<~!krt%
int k=partition(data,i-1,j,data[j]); ps<JKHC/c
SortUtil.swap(data,k,j); K})j5CJ/
if((k-i)>1) quickSort(data,i,k-1); Vfc9+T+
if((j-k)>1) quickSort(data,k+1,j); N;Hf7K
1*>a
} S1`+r0Fk~n
/** 0 B3*\ H}5
* @param data $9Z8P_^.0(
* @param i eDTEy;^o
* @param j eZP"M6
* @return ';b/D
*/ 9O}YtX2
private int partition(int[] data, int l, int r,int pivot) { ,YH^jc
do{ p1X
lni%=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ev$?c9*>
SortUtil.swap(data,l,r); o`G'E&
} {#Gr=iv~N
while(l SortUtil.swap(data,l,r); `[o^w(l:5@
return l; 8a-[Q
} A!iV iX &y
Q6}`%
} K
7YpGGd5
b?HW6Kfc
改进后的快速排序: 3n6_yK+D
*h-nI=
package org.rut.util.algorithm.support; W.0dGUi*
VQqEsnkz
import org.rut.util.algorithm.SortUtil; f}XUxIQ-<
B8w0DJ
/** NUx%zY
* @author treeroot x#Hq74H,
* @since 2006-2-2 UXIq>[2Z1
* @version 1.0 .F
3v)
*/ 3(FJ<,"D}
public class ImprovedQuickSort implements SortUtil.Sort { 7%)4cHZ^$?
0YIvE\-
private static int MAX_STACK_SIZE=4096; )(75dUl
private static int THRESHOLD=10; 7b'XQ/rs
/* (non-Javadoc) }tj@*n_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a*%>H(x
*/ R<k4LHDy
public void sort(int[] data) { Oo=}j
int[] stack=new int[MAX_STACK_SIZE]; o?hya.;h4
Is?0q@
int top=-1; 6ng
.
=
int pivot; trgj]|?M
int pivotIndex,l,r; DSET!F;PG
LD^V="d
stack[++top]=0; jQsucs5$h
stack[++top]=data.length-1; 4y)"IOd#|
oD!72W_:
while(top>0){ q]
,&$d^@
int j=stack[top--]; PiAA,
int i=stack[top--]; p^~lQ8t
!:e}d+F
pivotIndex=(i+j)/2; +J+]P\:
pivot=data[pivotIndex]; #^Sd r-
:ykQ[d`:|
SortUtil.swap(data,pivotIndex,j); YSv\T '3
B6=8cf"i
file://partition HjV83S;
l=i-1; :K2N7?shA
r=j; W13$-hf9
do{
U Y)YhXW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ld+}T"Z&M>
SortUtil.swap(data,l,r); pBmacFP
} Mb?6c y[
while(l SortUtil.swap(data,l,r); =%$ _)=}J
SortUtil.swap(data,l,j); 52-^HV
W%~ S~wx
if((l-i)>THRESHOLD){ yuKfhg7
stack[++top]=i; R.>/%o
stack[++top]=l-1; "t4~xs`~X
} QLIm+)T
if((j-l)>THRESHOLD){ oOQnV(I
stack[++top]=l+1; N:gS]OI*
stack[++top]=j; JUwP<C[
} WWq)CwR
0W]Wu[k
} ~Bj-n6 QDE
file://new InsertSort().sort(data); \?
MuORg
insertSort(data); BflF*-s ^
}
bQ
/** !|Vjv}UO
* @param data u%h]k ,(E
*/ _|H]X+|
private void insertSort(int[] data) { "kf7??Z
int temp; m,*t}j0 7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AO/J:`
} i3#]_ p{
} mL3'/3-7:V
} }54\NSj0
jd(=? !_
} !BK^5,4?--
N}.h_~6
归并排序: p3sz32RX
hQHV]xW
package org.rut.util.algorithm.support; h2uO+qEsu
zif()i
import org.rut.util.algorithm.SortUtil; Wq"pKI#x
nLo:\I(
/** y"2#bq
* @author treeroot 7xWX:2l*?
* @since 2006-2-2 CIYD'zR[2
* @version 1.0 =B;rj
*/ _0Wdm*
public class MergeSort implements SortUtil.Sort{ -,zNFC:6g
!~>u\h
/* (non-Javadoc) :Wb+&|dU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EY> %#0
*/ 6=|Q>[K
public void sort(int[] data) { @8V8gV?zm
int[] temp=new int[data.length]; '4N[bRCn
mergeSort(data,temp,0,data.length-1);
(lt/ t
} !X
|Tf
)RA7Y}e|m
private void mergeSort(int[] data,int[] temp,int l,int r){ ]+fL6"OD/2
int mid=(l+r)/2; t%N#Yh!
if(l==r) return ; %H%>6z x
mergeSort(data,temp,l,mid); F+c*v#T
mergeSort(data,temp,mid+1,r);
) VJ|
for(int i=l;i<=r;i++){ &wLI:x5
temp=data; s_EiA _
} {^$rmwN
int i1=l; eQzSWn[
int i2=mid+1; JX>_imo
for(int cur=l;cur<=r;cur++){ @0Tm>s
if(i1==mid+1) [&)9|EV
data[cur]=temp[i2++]; }bjTb!
else if(i2>r) .5_w^4`b
data[cur]=temp[i1++]; *-` /A
else if(temp[i1] data[cur]=temp[i1++]; m#'u;GP]k
else %Ix^Xb0
data[cur]=temp[i2++]; 2/(gf[elX
} tPFV6n
i
} ;QW)tv.y
3%k@,Vvt
} /z5j.TMs
qRB&R$
改进后的归并排序: umD .
`[Z?&'CRQ
package org.rut.util.algorithm.support; M62V NYt
.VWH
import org.rut.util.algorithm.SortUtil; >/evL
/
) ~ C)4
/** Sh{odrMj*
* @author treeroot |)GE7y0Q
* @since 2006-2-2 cl14FrpYu
* @version 1.0 ?XW+&!ar
*/ 2nOQ48haT
public class ImprovedMergeSort implements SortUtil.Sort { Rw Y)
O5
&eg]8kV
private static final int THRESHOLD = 10; #Wh"_zpM+
gp(w6:w
/* S(/@.gI:f
* (non-Javadoc) *|hICTWL
* $+V{2k4X,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MqXA8D
*/ K;S&91V)=
public void sort(int[] data) {
%~$4[,=
int[] temp=new int[data.length]; K Rm4r
mergeSort(data,temp,0,data.length-1); >Li
~Og@
} [wIyW/+
>(d+E\!A
private void mergeSort(int[] data, int[] temp, int l, int r) { saYn\o"m
int i, j, k; ]3 Mm"7`
int mid = (l + r) / 2; F~<$E*&h@
if (l == r) e|]g?!
return; ezHj?@
if ((mid - l) >= THRESHOLD) Nb(se*Y#
mergeSort(data, temp, l, mid); B/pNM81(
else D`,@EW].
insertSort(data, l, mid - l + 1); C^l)n!fq
if ((r - mid) > THRESHOLD) 6n;ew l}
mergeSort(data, temp, mid + 1, r); @(Q4
else &X +@,!
insertSort(data, mid + 1, r - mid); sOVaQ&+y
Lf7iOW9U3
for (i = l; i <= mid; i++) { ,]20I _
temp = data; PP$Ig2Q
} 1AA(qE
for (j = 1; j <= r - mid; j++) { 4!iS"QH?;^
temp[r - j + 1] = data[j + mid]; i~k?k.t8
} qdUlT*fw
int a = temp[l]; F'|,(P
int b = temp[r]; hq\KSFP
for (i = l, j = r, k = l; k <= r; k++) { x"_f$,:!
if (a < b) { |
M-@Qvgh
data[k] = temp[i++]; e#&[4 tQF
a = temp; ;?%2dv2d
} else { `| R8WM
data[k] = temp[j--]; @AVx4,!>[
b = temp[j]; I>G)wRpfR'
} b\H(Lq17
} bncK8SK
} 4zfgtg(
<1_?.gSi
/** Fv e,&~
* @param data QDxL y aL
* @param l nef-xxXC^I
* @param i uCmdNY
*/ 7|65;jm+
private void insertSort(int[] data, int start, int len) { lm-ubzJN
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v
mw7H
} r|0C G^:C
} Re,0RM\
} WDgp(Av!
} nE::9Yh8z
(}]74Lc
堆排序: zCPjuS/~
Q
1NJ*EzJ~?
package org.rut.util.algorithm.support; Ya\G/R
0fNWI
import org.rut.util.algorithm.SortUtil; 8v(Xr}q,r
Na3tK}x
/** xp><7{
* @author treeroot ?55('+{l
* @since 2006-2-2 PS \QbA
* @version 1.0 r]8tl
*/ |(y6O5Y.
public class HeapSort implements SortUtil.Sort{ Rra(/j<rQ
nb?bx{M
/* (non-Javadoc) 4+l7v?:Pr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /?2yo{Fg
*/ %;^6W7
public void sort(int[] data) { f\/};a
MaxHeap h=new MaxHeap(); gU+BRTZ&x
h.init(data); (Grj_p6O
for(int i=0;i h.remove(); F
\} Kh3
System.arraycopy(h.queue,1,data,0,data.length); z XVQLz5
} @/|sOF;8W
;zz"95X7
private static class MaxHeap{ LnR3C:NO k
+wT,dUin_<
void init(int[] data){ &+%CC
this.queue=new int[data.length+1]; Z<ke!H
for(int i=0;i queue[++size]=data; oJXZ}>>iT
fixUp(size); tDIzn`$z
} B-M|}T
} jY ^ndr0;
]1D>3
private int size=0; 7W}~c/ %
i?*&1i@
private int[] queue; h1)p{5}H
1F[;
)@
public int get() { j-yD;N
return queue[1]; MZL~IX
} /<|J \G21
mc9$"
public void remove() { <-FZ-asem
SortUtil.swap(queue,1,size--); kC LeHH|K
fixDown(1); T5Pc2R
} ?&/9b)c S
file://fixdown aY3kww`
private void fixDown(int k) { G-,PsXSwe
int j; :5@7z9 >
while ((j = k << 1) <= size) { w8>T ~Mv
if (j < size %26amp;%26amp; queue[j] j++; 7d'@Z2%J0
if (queue[k]>queue[j]) file://不用交换 .@=d I
break;
:i:Zc~%
SortUtil.swap(queue,j,k); wl(}F^:/`
k = j; RZ?>>Ll6
} ?8vjHEE
} _>3GNvS
private void fixUp(int k) { !kmo%+
while (k > 1) { (v(_XlMK
int j = k >> 1; `bt]v $
if (queue[j]>queue[k]) X*FK6,Y|(
break; : PQA9U|
SortUtil.swap(queue,j,k); O7rm(
k = j; O#u)~C?)8
} ~ RTjcE
} @h^5*M
'@pav>UPD
} p4aM`PW8>=
14zo0ANM
} fI}-?@
r2U2pAy#
SortUtil: +86\&y)
QuF%m^aE
package org.rut.util.algorithm; X>*zA?:
G. <9K9K
import org.rut.util.algorithm.support.BubbleSort; C'zMOR6c
import org.rut.util.algorithm.support.HeapSort; tx5@r;
import org.rut.util.algorithm.support.ImprovedMergeSort; gs0,-)
import org.rut.util.algorithm.support.ImprovedQuickSort; :%!SzI?
import org.rut.util.algorithm.support.InsertSort; Txp~&a03
import org.rut.util.algorithm.support.MergeSort; _VY]
import org.rut.util.algorithm.support.QuickSort; ?]paAP;4
import org.rut.util.algorithm.support.SelectionSort; )Dqv&^
import org.rut.util.algorithm.support.ShellSort; 3c-ve$8u~
I94;1(Cs%
/** F}.Af=<Q
* @author treeroot 39k
P)cD
* @since 2006-2-2 nz>A\H
* @version 1.0 $dwv1@M2
*/ %iJ6;V4
public class SortUtil { r-[z!S
public final static int INSERT = 1; (<8T*Xo
public final static int BUBBLE = 2; )FU4i N)ei
public final static int SELECTION = 3; R@"N{ [9
public final static int SHELL = 4; ]~a!O
public final static int QUICK = 5; xnh%nv<v{
public final static int IMPROVED_QUICK = 6; IXzad
public final static int MERGE = 7; ,QKG$F
public final static int IMPROVED_MERGE = 8; [3/P
EDkw
public final static int HEAP = 9; YK}(VF?&
Qt@~y'O
public static void sort(int[] data) { %t<Y6*g
sort(data, IMPROVED_QUICK); <v5toyA
} EH,uX{`e
private static String[] name={ /~AwX8X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IM
+Dm
}; <GoE2a4Va
n.7 $*9)#
private static Sort[] impl=new Sort[]{ QjQJ "
new InsertSort(), sPd5f2'
new BubbleSort(), gHox{*hb[
new SelectionSort(), d(]LRIn~1
new ShellSort(), 4J I;NN
new QuickSort(), !gT6So
new ImprovedQuickSort(), -u8@ .
new MergeSort(), ?Bh}
new ImprovedMergeSort(), ~t#'X8.)
new HeapSort() qqkZbsN
}; lgnF\)
;M'R/JlUN
public static String toString(int algorithm){ rylllJz|L:
return name[algorithm-1]; Gg-<3z
} `
0\hm`
Z?v9ub~%
public static void sort(int[] data, int algorithm) { ? 4.W
_
impl[algorithm-1].sort(data); m{V@Om
} .Hgiru&
kxf'_Nzy
public static interface Sort { OSSMIPr
public void sort(int[] data); +}^}
<|W6
} Z2
t0l%
F92n)*[
public static void swap(int[] data, int i, int j) { q<;9!2py
int temp = data; ly^F?.e-
data = data[j]; wvUph[j}J
data[j] = temp; <-lz_
} `ZNjA},.
} pwu5Fxn)