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。 g~lv/.CnA+
插入排序: ot0teNF
3Y#Q'r?
package org.rut.util.algorithm.support; -@v^. @[Z&
5100fX}
import org.rut.util.algorithm.SortUtil; wNB?3v{n
/** <)qa{,GX\
* @author treeroot _@5Xmr
* @since 2006-2-2 _c5@)I~
* @version 1.0 2/-m-5A
*/ Yuv(4a<M%
public class InsertSort implements SortUtil.Sort{ JrP`u4f_
QiCia#_
/* (non-Javadoc) Dri6\/0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vYgJu-Sl
*/ E-A9lJWr
public void sort(int[] data) { TTf
j5
int temp; L]Tj]u)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7@ym:6Y+]
} ;
476t
} h ldZA
} [(X~C*VdxM
;,y_^-h;
} z)Rkd0/X
9z,sn#-t
冒泡排序: ?QP>rm
X5WA-s(?0
package org.rut.util.algorithm.support; CD1Ma8I8
}8'_M/u\
import org.rut.util.algorithm.SortUtil; 5ibr1zs
j.M]F/j
/** :ez76oGyc
* @author treeroot s_^`t+5
* @since 2006-2-2 h#1:ypA6l
* @version 1.0 D+T/ Z)
*/ {_7hX`p
public class BubbleSort implements SortUtil.Sort{ ,xwiJfG;
]
Laj/~Ru6
/* (non-Javadoc) "8QRYV~Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u#6s^
)W
*/ "&_+!TBg,
public void sort(int[] data) { }T_"Vg q
int temp; !t% 1G.
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^-%'ItVO
if(data[j] SortUtil.swap(data,j,j-1); a1,)1y~
} P@y)K!{Nk
} &r,vD,
} ^EIuGz1@0
} PYQ0&;z
m"L^tSD~
} O%t? -h
L7ae6#5.
选择排序: 9Og
73qE!(
package org.rut.util.algorithm.support; Y[*.^l._
_'p/8K5)=
import org.rut.util.algorithm.SortUtil; FQek+[ox
|=5zI6pT
/** VEV?$R7;
* @author treeroot 'IU3Xu[-.
* @since 2006-2-2 &Wy>t8DIK
* @version 1.0 p39$V[*g(
*/ gmp@ TY=:L
public class SelectionSort implements SortUtil.Sort { rBJ`=o z
Y`gO:d8
/* fhi}x(
* (non-Javadoc) O0}uY:B
* 8Hq4ppC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .1(_7!m@
*/ u?V}pYX
public void sort(int[] data) { JCH9~n.
int temp; vhZXgp0X
for (int i = 0; i < data.length; i++) { nscnG5'{+
int lowIndex = i; =2q#- ,t
for (int j = data.length - 1; j > i; j--) { {?Slo5X|
if (data[j] < data[lowIndex]) { hUpour
|b
lowIndex = j; E}Cz(5
} 7a[6@
} iKq_s5|sW
SortUtil.swap(data,i,lowIndex); %C%3c4+Oh
} , S^y>
} 0}GO$%l
^aqQw u
} X$xf@|<a
IAA_Ft
Shell排序: *mV?_4!,f7
1<:5b%^c
package org.rut.util.algorithm.support; {~&]
DXJw)%G
w
import org.rut.util.algorithm.SortUtil; k8G4CFg}wP
oW
OR7)?r
/** ,b^Y8_ltoT
* @author treeroot :E{)yT
* @since 2006-2-2 1GA.c:
* @version 1.0 42e [OG-
*/ zMepF]V
public class ShellSort implements SortUtil.Sort{ wsdZwik
,3rsjoKhd
/* (non-Javadoc) WiH8j$;xu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F=&,=r'Q8
*/ L@RnLaoQ
public void sort(int[] data) { >'n[B
for(int i=data.length/2;i>2;i/=2){ YdV.+v(30
for(int j=0;j insertSort(data,j,i); H M(X8iNt
} ju:}%'
} `pv
insertSort(data,0,1); EFiVwH
} 3 85qQppz
Dhm;K$T
/** 3N]ushMO
* @param data /@Jg [na
* @param j i=5!taxu}E
* @param i ?Kmz urG
*/ T6SYXQd>.
private void insertSort(int[] data, int start, int inc) { 5>dA7j^v
int temp; Gy+c/gK
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ((?"2 }1r
} /?BTET
} k
%{q
q v
} qAp<OJ
4]}d'x&
} `C7pM
G;u 6p
快速排序: [4EIy"
^0"fPG`
package org.rut.util.algorithm.support; /0`Eux\
{Mo[C%
import org.rut.util.algorithm.SortUtil; nzO-\`40
'"q+[zwv
/** 5k=04=Iyh#
* @author treeroot TN Z-0
* @since 2006-2-2 &'neOf/~
* @version 1.0 zgS)j9q}
*/ fLRx{Nu
public class QuickSort implements SortUtil.Sort{ A+Bq5mik
">B&dNrt
/* (non-Javadoc) )%9:k9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0(C[][a*u
*/ UU}Hs}
public void sort(int[] data) { ZCK#=:ln
quickSort(data,0,data.length-1); )(d~A?~
} oGXcu?ft
private void quickSort(int[] data,int i,int j){ xn=mS!"1Zo
int pivotIndex=(i+j)/2; @Nm{H
file://swap ^^V+0 l
SortUtil.swap(data,pivotIndex,j); I(>_as\1
8~!h8bkC
int k=partition(data,i-1,j,data[j]); sw$JY}Q8x
SortUtil.swap(data,k,j); (w_b
if((k-i)>1) quickSort(data,i,k-1); xhCNiYJ|
if((j-k)>1) quickSort(data,k+1,j); ?y%Mm09
e\#aQ1?"
} sj+ )
/**
'mv|6Y
* @param data ]Gj%-5G
* @param i lq1223
* @param j -R$ Q`Xw
* @return ?!tO'}?
*/ .K_50%s
private int partition(int[] data, int l, int r,int pivot) { i*xVD`x ~
do{ rIyIZWkI
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2#R0Bd
SortUtil.swap(data,l,r); T_\hhP~
} cri-u E?
while(l SortUtil.swap(data,l,r); @Rd`/S@
return l; @Us#c 7/
} .F/l$4CQ
;M+~e~
} EAs^i+/
SbtZhg=S_
改进后的快速排序: 5n::]Q%=D
ju.`c->k"
package org.rut.util.algorithm.support; !bW^G}
<t
:p1_ij]ND
import org.rut.util.algorithm.SortUtil; _Fkb$NJ"]Q
UOe@R|79q
/** `)i4ZmE|
* @author treeroot ^MWp{E
* @since 2006-2-2 vN6)Szim
* @version 1.0 S>[&]
*/ wG 5H^>6u>
public class ImprovedQuickSort implements SortUtil.Sort { eH;{Ln
REOWSs$'
private static int MAX_STACK_SIZE=4096; uE#"wm'J
private static int THRESHOLD=10; $ -]9/Ct
/* (non-Javadoc) Fe2iG-ec
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4SkCV
*/ "NV~lJS%
public void sort(int[] data) { Qoz4(~I
int[] stack=new int[MAX_STACK_SIZE]; CT.hBz
-S
<?rdhx
int top=-1; j3o?B
int pivot; @Y%i`}T%(
int pivotIndex,l,r; b\SB
2"Ki5
stack[++top]=0; LD;!
s
stack[++top]=data.length-1; TaG(sRI
fHF*#
while(top>0){ U@".XIDQ
int j=stack[top--]; PmUq~YZ7
int i=stack[top--]; n}J!?zZc
>Qf`xUZ
pivotIndex=(i+j)/2; 7$kTeKiP
pivot=data[pivotIndex]; S2V+%Z
_J
"6WE6zq
SortUtil.swap(data,pivotIndex,j); o3:h!(#G
dsZ-|C
file://partition |v"&Y
l=i-1; _10I0Z0
r=j; _dVA^m
do{ T\TKgO=)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); na|23jz4
SortUtil.swap(data,l,r); P9gAt4i
} 9'O@8KB_
while(l SortUtil.swap(data,l,r); Zu ![v0
SortUtil.swap(data,l,j); )5<c8lzp
@(m?j1!M
if((l-i)>THRESHOLD){ d?[8VfAnh
stack[++top]=i; )4FW~o<i
stack[++top]=l-1; _lw:lZM?
} n?NUnFA
if((j-l)>THRESHOLD){ {%v{iE>
stack[++top]=l+1; U;]h/3P
stack[++top]=j; Z"9D1Uk
} tIW~Ng
%Xl(wvd
} FQB6`
M
file://new InsertSort().sort(data); E(an5x/r
insertSort(data); ^}Gu'!z9D
} U1pwk[
/** ?fvK<0S`
* @param data A{wSO./3
*/ CuYSvW
private void insertSort(int[] data) { _lZWy$rm%
int temp; ugQySg>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p~<d8n4UH
} hx!hI1
} iRI7x)^0"z
} (+.R8
jY$3
} . L]!*
wN$u^]
归并排序: ByW,YKMy
=BgQSs/^c
package org.rut.util.algorithm.support; >^adxXw.o
82w=t
import org.rut.util.algorithm.SortUtil; TE@bV9a
}b]z+4Ua(
/** (x8D ]a
* @author treeroot T3/Gl6f
* @since 2006-2-2 `;3fnTI:1
* @version 1.0 aeTVcq
*/ [_3L
public class MergeSort implements SortUtil.Sort{ w4;1 ('
tQ(gB_
/* (non-Javadoc) @HP7$U"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VuA)Ye
*/ 6cTd
SE
public void sort(int[] data) { )uH#+IU
int[] temp=new int[data.length]; 5H/D~hr&
mergeSort(data,temp,0,data.length-1); ]|K@0,
} 1|H(q
cy( WD#^
private void mergeSort(int[] data,int[] temp,int l,int r){
W[oQp2 =
int mid=(l+r)/2; ]t.6bb4
if(l==r) return ; Tf.DFfV#y
mergeSort(data,temp,l,mid); +IbQVU~/
mergeSort(data,temp,mid+1,r); oGqbk x
for(int i=l;i<=r;i++){ 8Rd*`]@[pk
temp=data; 5c6?$v/
} dW"=/UW
int i1=l; kPFqsq
int i2=mid+1; *ta?7uSiT
for(int cur=l;cur<=r;cur++){ {Nny.@P)H
if(i1==mid+1) c>yqq'
data[cur]=temp[i2++]; qBcwM=R3P
else if(i2>r) OVU+V 0w1a
data[cur]=temp[i1++]; |eFce/
else if(temp[i1] data[cur]=temp[i1++]; C?7I(b:
else 6%fF6
data[cur]=temp[i2++]; NekPl/4
} nY 50dFA,
} VgcLG ]tE[
Eh|v>Yew
} 6@geakq
&bT \4
改进后的归并排序: ]Qh0+!SdG
<~-cp61z;
package org.rut.util.algorithm.support;
@1O.;
geSH3I
import org.rut.util.algorithm.SortUtil; -DE?L,9X9
RP~ hi%A
/** o@A|Lm.
* @author treeroot ~)IiF.I b
* @since 2006-2-2 #Bi8>S
* @version 1.0 PNhxF C.
*/ xjg(}w
public class ImprovedMergeSort implements SortUtil.Sort { 5BB:.
b[`fQv$G
private static final int THRESHOLD = 10; /m(v5v7(
y8CH=U[
/* $ {5|{`
* (non-Javadoc) hYEUiQ
* M5T4{^i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zsx\GeE%:
*/ ])H[>.?K
public void sort(int[] data) { a?ux
int[] temp=new int[data.length]; VVDd39q
mergeSort(data,temp,0,data.length-1); Y>Tok|PV
} kNrN72qg
ud:5_*
private void mergeSort(int[] data, int[] temp, int l, int r) { 6z ,nt
int i, j, k; ;FO( mL (
int mid = (l + r) / 2; |++\"g
if (l == r) *^Xtorqo
return; k{-#2Qz
if ((mid - l) >= THRESHOLD) PQA}_o
mergeSort(data, temp, l, mid); _0E KE
else ?5jq)xd2
insertSort(data, l, mid - l + 1); :~%{
if ((r - mid) > THRESHOLD) 0mi$_Ld+
mergeSort(data, temp, mid + 1, r); { bD:OF
else `T(T]^C98
insertSort(data, mid + 1, r - mid); r`5svY
5tQZf'pHfd
for (i = l; i <= mid; i++) { SVJt= M
temp = data; c%vtg.A
} /7jb&f
for (j = 1; j <= r - mid; j++) { n>\2_$uDI
temp[r - j + 1] = data[j + mid]; t?;\'
} kYnp$8
int a = temp[l]; Dwuao`~Xm
int b = temp[r]; caXSt2|'
for (i = l, j = r, k = l; k <= r; k++) { =@y
?Np^A
if (a < b) { uwo\FI
data[k] = temp[i++]; y';"tD Fb
a = temp; ~1.B
fOR8
} else { cPbAR'
data[k] = temp[j--]; ((cRe6
b = temp[j]; 5}NTqN0@
} K0C3s
} -0f,qNF
} 1yV+~)by3
]@A}v\wa
/** (,OF<<OH
* @param data 3+oGR5gIN
* @param l 35/K9l5
* @param i .-4]FGg3
*/ W|4h;[w
private void insertSort(int[] data, int start, int len) { +\)a p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g`r4f%O
} ne9-
c>>
} /wT<p
} 8Ai\T_l
} Nn='9s9F?}
W@FSQ8b>$m
堆排序: pX?/=T@ Bw
8KMo !p\i
package org.rut.util.algorithm.support; lFZl}x
o9]i
{e>L
import org.rut.util.algorithm.SortUtil; 2wwJ>iR`
><i: P*ht
/** H7dT6`<~Y
* @author treeroot W*r1Sy
* @since 2006-2-2 V[2}
* @version 1.0 Z~1uyr(
*/ ?4cj"i
public class HeapSort implements SortUtil.Sort{ j06qr\Es
w9TE E,t;5
/* (non-Javadoc) TX).*%f[r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yan}H}Oq
*/ ;LqpX!Pi
f
public void sort(int[] data) { 3*= _vl3
MaxHeap h=new MaxHeap(); l!mx,O`
h.init(data); zEk/15
for(int i=0;i h.remove(); 6KDm#7J
System.arraycopy(h.queue,1,data,0,data.length); SZ1yy["
} ],s{%a5wC
#7['M;_
private static class MaxHeap{ }inV)QQ
<S3s==Cg
void init(int[] data){ aUk]wiwIR9
this.queue=new int[data.length+1]; M@+Pq/f:
for(int i=0;i queue[++size]=data; Zygu/M6
fixUp(size); DR7 JEE
} se=;vp]3a
} qPBOt;N
0Ua&_D"
private int size=0; -G(#,rXk
eY[kUMo
private int[] queue; xauMF~*
==AmL]*
public int get() { Jq?Fi'2F%
return queue[1]; ksf6O$
} !<>*|a
Cy dV$!&mP
public void remove() { 72 ZoN<c
SortUtil.swap(queue,1,size--); 3~1Gts
fixDown(1); "!ks7:}v
} P^AI*tH"m
file://fixdown SHT`
private void fixDown(int k) { {krBAz&
int j; ?Wc+
J4
while ((j = k << 1) <= size) { n8tw8o%&[
if (j < size %26amp;%26amp; queue[j] j++; c9x&:U
if (queue[k]>queue[j]) file://不用交换 =Cd{bj.8
break; 8([ MR
SortUtil.swap(queue,j,k); 25 cJA4
k = j; ?|~KF:,#}
} lffw
"
} /cT6X]o8
private void fixUp(int k) { +)LCYDRV7
while (k > 1) { .N7<bt@~)
int j = k >> 1; Y"L |D,ex
if (queue[j]>queue[k]) N\|BaZ%>|
break; #\
uB!;Q
SortUtil.swap(queue,j,k); %JgdLnQE
k = j; O?ODfO+>
} 7>=
} 8@Bm2?$}g
udXzsY9Ng
} />N# PF
W-*HAS
} cyo[HI?WM
D|*yeS4>
SortUtil: e_"m\e#N
IXG@$O?y/
package org.rut.util.algorithm; -y>~ :.
S+"Bq:u"
import org.rut.util.algorithm.support.BubbleSort; CF
3V)3}
import org.rut.util.algorithm.support.HeapSort; mx#%oJnsi
import org.rut.util.algorithm.support.ImprovedMergeSort; #m17cDL
import org.rut.util.algorithm.support.ImprovedQuickSort; iL2_ _TO
import org.rut.util.algorithm.support.InsertSort; TB-dV'w
import org.rut.util.algorithm.support.MergeSort; !C h1q
import org.rut.util.algorithm.support.QuickSort; r@/@b{=
import org.rut.util.algorithm.support.SelectionSort; M4D @G
import org.rut.util.algorithm.support.ShellSort; bYoBJ
#UX
>bd@2au9!
/** g)R 2V
* @author treeroot wqi0%Cu*
* @since 2006-2-2 vZW[y5
* @version 1.0 BeN]D
*/ @meT8S9t
public class SortUtil { ,`02fMOLc
public final static int INSERT = 1; I&m' a
public final static int BUBBLE = 2; G$2@N6
public final static int SELECTION = 3; ^`B;SSV
public final static int SHELL = 4; bLSc=f&
public final static int QUICK = 5; ,@/O\fit)
public final static int IMPROVED_QUICK = 6; YWs?2I
public final static int MERGE = 7; P@f#DX
)
public final static int IMPROVED_MERGE = 8; hNhEA $X5
public final static int HEAP = 9; .rITzwgB
\7%#4@;?
public static void sort(int[] data) { ;b:'i&r
sort(data, IMPROVED_QUICK); .xuzu#-
} +*Z'oC BJ,
private static String[] name={ {z\K!=X/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (^(l=EN-<
}; TQmrL
SZyORN
private static Sort[] impl=new Sort[]{ JXMH7
new InsertSort(), gb|;]mk*"
new BubbleSort(), #]6{>n1*+w
new SelectionSort(), H%X F~tF:
new ShellSort(), \=7jp|{Yl
new QuickSort(), ca,W:9#.xn
new ImprovedQuickSort(), d#]hqy
new MergeSort(), BjagG/sX
new ImprovedMergeSort(), !><asaB]1
new HeapSort() s5rD+g]E`
}; &^#u=w?^x
]ly" K!1,
public static String toString(int algorithm){ 8#VD u(
return name[algorithm-1]; NPS*0 y/
} k=[s%O6H
w]yVNB
public static void sort(int[] data, int algorithm) { !yxqOT-
impl[algorithm-1].sort(data); 0#Lmajs
} %T\hL\L?
'5 ~cd
public static interface Sort { =#,`k<v%I
public void sort(int[] data); M:{Aq&.
} o.Rv<a5.L
YcX\t6VK
public static void swap(int[] data, int i, int j) { 9$Z0mz k
int temp = data; Qj;{Z*l%+
data = data[j]; mHHlm<?]
data[j] = temp; )0iN2L]U;
} pm ,xGo2
} ON){d!]uJ