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。 YgL{*XYAt
插入排序: 5e}adHjM
q)PLc{NO
package org.rut.util.algorithm.support; Bx9v2x.
d.Ep#4
import org.rut.util.algorithm.SortUtil; :^H2D=z@
/** N/6!|F
* @author treeroot $QB/n63
* @since 2006-2-2 <kOdd)X
* @version 1.0 @
q:S]YB
*/ &5d~ODO
public class InsertSort implements SortUtil.Sort{ It:,8
1=z6m7@'-
/* (non-Javadoc) 4U>g0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l#bE_PD;
*/ :e rfs}I
public void sort(int[] data) { MmQ"z_v
int temp; 7 F> a&r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Cm%|hk>fQ
} ,4--3 MU
} #sM`>KG6T1
} uF<}zFS
x@#aOf4<U
} nAaY5s0D
xVN(It7g
冒泡排序: &t:~e" 5<
g1v=a
package org.rut.util.algorithm.support; "DvhAEM
F4DJML-(
import org.rut.util.algorithm.SortUtil; H7%q[O
+;/ s0
/** 8/T[dn
* @author treeroot OEnCN
* @since 2006-2-2 7Fzj&!>ti
* @version 1.0 \=uD)9V
*/ .H
9r_
public class BubbleSort implements SortUtil.Sort{ zS*vKyye>
#Q` TH<
/* (non-Javadoc) ~@mNR^W-W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]FEDAGu
*/ Q8D#kAYw
public void sort(int[] data) { oy\U\#k
int temp; .<4U2h
for(int i=0;i for(int j=data.length-1;j>i;j--){ Qz4Do6#y
if(data[j] SortUtil.swap(data,j,j-1); rT(b t~Z
} yb6gYN
} XwIKpr8
} @{{6Nd5
} ~s*kuj'%+
{t!Pv2y<
} S S fNI>
,!dVhG#
选择排序: 3b[.s9Q
9#E)H?`g
package org.rut.util.algorithm.support; 089v;
d 6
'U-8w@\Z
import org.rut.util.algorithm.SortUtil; _%G;^ b
~S\8 '
/** .z[#j]k
* @author treeroot y({lE3P
* @since 2006-2-2 EV@yJ]
* @version 1.0 I,W`s
*/ wOg#J
public class SelectionSort implements SortUtil.Sort { '| p"HbJ
vj9'5]!~q
/* @,m 7%,
* (non-Javadoc) EY^?@D_<
* VS3lz?o?6g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %7[q%S
*/ {q! :t0X.Y
public void sort(int[] data) { lvx[C7?
int temp; zX]l$Q+
for (int i = 0; i < data.length; i++) { .d6b?t
int lowIndex = i; 1`GW>ZKv
for (int j = data.length - 1; j > i; j--) { p<+Y;,+
if (data[j] < data[lowIndex]) { !P3y+;S
lowIndex = j; Tvt(nWn(H1
} hP}-yW6]
} -S#jOr
SortUtil.swap(data,i,lowIndex); 3_8W5J3I
} kD(#LM<9s
} \k{d'R#~(
re4A5Ev$
} $18?Q+?3
wLzV#8>
Shell排序: 4~1lP&
6^lix9q7
package org.rut.util.algorithm.support; ~G1B}c]
-]t>'Q?
import org.rut.util.algorithm.SortUtil; :D4'x{#H
Tp|>(~;ai
/** Y]7 6y>|e
* @author treeroot bFSs{\zE
* @since 2006-2-2 a"`>J!
* @version 1.0 WL?qulC}h1
*/ }0?XF/e(R
public class ShellSort implements SortUtil.Sort{ c
dWg_WBC
r'4Dj&9Ac
/* (non-Javadoc) Y<V$3h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t37<<5A
*/ H%>^_:h
public void sort(int[] data) { Lrmhr3
w5
for(int i=data.length/2;i>2;i/=2){ 3 .K #,
for(int j=0;j insertSort(data,j,i); B#?rW*yEe
} 'S|7<<>4k
} +,cd$,18
insertSort(data,0,1); \_YDSmjy
} I E{:{b\
\}~71y}
/** Wt=\hixj-
* @param data |AT`(71
* @param j K>C@oE[W
* @param i 0Y:)$h2?
*/ GG"6O_
private void insertSort(int[] data, int start, int inc) { `:C2Cj
int temp; Fy0sn|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L6#4A3yh
} 0wCQPvO
} |3^U\r^zo
} A!Tm[oqu
b
0qA
} [H{@<*
U#&+n-npO
快速排序: Kr[oP3
O8cZl1C3
package org.rut.util.algorithm.support; D)Ep!`Q
)U7fPKQ
import org.rut.util.algorithm.SortUtil; n/x((d%"E
q!W=U8`
/** hC9EL=
A
* @author treeroot 97qf3^gGd
* @since 2006-2-2 BMqr YW
* @version 1.0 wa~zb!y<
*/ /]U;7)
public class QuickSort implements SortUtil.Sort{ =z]rZSq*o
&H
P g>
/* (non-Javadoc) t2YB(6w+xg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D/JSIDd
*/ }+Q4s]
public void sort(int[] data) { b^&azUkMN
quickSort(data,0,data.length-1); $VB
dd~f
} q]?)c
private void quickSort(int[] data,int i,int j){ H%etYpD
int pivotIndex=(i+j)/2; q"6$#o{~U
file://swap %-$BtR2@o
SortUtil.swap(data,pivotIndex,j); U{/fY/kq
tTF<DD}8
int k=partition(data,i-1,j,data[j]); _C(fz CK
SortUtil.swap(data,k,j); {}rnn$HQe
if((k-i)>1) quickSort(data,i,k-1); n#}~/\P6
if((j-k)>1) quickSort(data,k+1,j); ^#Mp@HK
F" M
} 4w#2m>.
/** '7/F]S0K
* @param data N{~P}Sw
* @param i em5~4;&'
* @param j e&*b{>1*
* @return Bs` {qmbC
*/ wy
.96
private int partition(int[] data, int l, int r,int pivot) { ^<;CIXo
do{ EpQy;#=;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j7QK8O$XL
SortUtil.swap(data,l,r); ?{jey_]M
} &3;"$P
while(l SortUtil.swap(data,l,r); #oFyi @U
return l; 9bM kP2w>
} c9o]w8p/
\uZ|2WG`
} ^,mN-.W
lM}-'8tt?
改进后的快速排序:
iF":c}$.
_x1W\#
package org.rut.util.algorithm.support; /CMgWGI
l
U8pX$
import org.rut.util.algorithm.SortUtil; LMx/0
$v[mIR
/** ,msP(*qoI
* @author treeroot 1G"ohosmF
* @since 2006-2-2 *S"RU~1_
* @version 1.0 Jwfb%Xge~
*/ x;$ESPPg
public class ImprovedQuickSort implements SortUtil.Sort { M:/(~X{?
JqZt1um
private static int MAX_STACK_SIZE=4096; T/2k2r4PD
private static int THRESHOLD=10; RgUQ:
/* (non-Javadoc) t72u%M6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }A,!|m4
*/ KvEv0L<ky
public void sort(int[] data) { ZSW@,Ti
int[] stack=new int[MAX_STACK_SIZE]; c"-X:m"
Maq`Or|4
int top=-1; Ez"*',(
int pivot; Y]KHCY
int pivotIndex,l,r; (,jsZ!sl
n6.Z{Q'b
stack[++top]=0; :"Otsb7
stack[++top]=data.length-1; s]OZ+^Z
rks"y&&Nc
while(top>0){ oA@M =
int j=stack[top--]; y<w_>O
int i=stack[top--]; %8|lAMTY7/
:aomDK*
pivotIndex=(i+j)/2; i{TPf1OY`M
pivot=data[pivotIndex]; R`E:`t4G
t!SxJB e
SortUtil.swap(data,pivotIndex,j); <5}I6R;
ygj%VG
file://partition 2>o^@4PnZ
l=i-1; HR"clD\{Di
r=j; ]u!s-=3s
do{ ZJU
%&@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yo->mD
SortUtil.swap(data,l,r); egSs=\
} yP"}(!~m
while(l SortUtil.swap(data,l,r); UPr&
`kaJ
SortUtil.swap(data,l,j); d~r A`!s7`
&9)/"
if((l-i)>THRESHOLD){ 036m\7+Qj
stack[++top]=i; 5,s@K>9l;
stack[++top]=l-1; F-rhxJd
} ZD'mwj+K
if((j-l)>THRESHOLD){ `h'l"3l
stack[++top]=l+1; )^ZC'[93
stack[++top]=j; K>e-IxA);0
} >6jal?4u-
V^R,j1*
} k{#k:
file://new InsertSort().sort(data); )Z1&`rv
insertSort(data); 9aLd!PuTN
} gC(S(osF
/** 3N-
'{c6]U
* @param data _s#]WyU1g
*/ I:/|{:5
private void insertSort(int[] data) { A+8)VlE\
int temp; ;$zvm`|:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .Z'NH
wCy
} \wsVO"/
} NQ;X|$!zH
} 97\K ]Tr
p7-\a1P3
} FXDB> }8
Qs
za,09
归并排序: Y:O|6%00Y
%a
WRXW@c
package org.rut.util.algorithm.support; %LP4RZ
, +J)`+pJx
import org.rut.util.algorithm.SortUtil; gBhX=2%
zJW2F_
/** f~\H|E8(
* @author treeroot w^
z ftm
* @since 2006-2-2 :%J;[bS+
* @version 1.0 \By_mw
*/ 9v`sSTlSd
public class MergeSort implements SortUtil.Sort{ <(@S;?ZEW
8Cp@k=
/* (non-Javadoc) Z\`SDC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O2ktqAWx@
*/ >I5Wf/$
public void sort(int[] data) { ]tT=jN&(
int[] temp=new int[data.length]; }:c~5whN
mergeSort(data,temp,0,data.length-1); qQ^CSn98J
} B-w`mcqp$
q MrM^ ~
private void mergeSort(int[] data,int[] temp,int l,int r){ Ul/m]b6-
int mid=(l+r)/2; \1joW#
if(l==r) return ; 9%|skTgIqH
mergeSort(data,temp,l,mid); ^
'|y^t
mergeSort(data,temp,mid+1,r); 'A.5T%n-
for(int i=l;i<=r;i++){ (>A#|N1U
temp=data; 4GF3.?3
} "Zhh>cz
int i1=l; )uOtQ0
int i2=mid+1; #GlFm?/6K/
for(int cur=l;cur<=r;cur++){ ~Yg)8
if(i1==mid+1) +@!\3a4!
data[cur]=temp[i2++]; fXWE4^jU
else if(i2>r) BWxJ1ENM
data[cur]=temp[i1++]; As>Og
else if(temp[i1] data[cur]=temp[i1++]; )#i"hnYpQ
else 0(Y,Q(JTo&
data[cur]=temp[i2++]; *j]Bo,AC
} )e'F[
} WvT H+
Ewr2popK
} H
$Az,-P
\^9n&MonM
改进后的归并排序: KzV|::S^
>Tl/3{V
package org.rut.util.algorithm.support; &x\)] i2f
O>hh
import org.rut.util.algorithm.SortUtil; `3ha~+Goo!
]!sCWR
/** F%$ q]J[
* @author treeroot km9#lK
* @since 2006-2-2 qzvht4
* @version 1.0 QnBWZUI
*/ kG5+kwV=:
public class ImprovedMergeSort implements SortUtil.Sort { $rk=#;6]v;
w=!xTA
private static final int THRESHOLD = 10; zL}`7*d:v
PPV T2;9
/* [^}bc-9?i
* (non-Javadoc) 8$]SvfX
* YI*H]V%w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G$'UK
*/ D`[@7$t
public void sort(int[] data) { q1L>nvE
int[] temp=new int[data.length]; X6Z/xb@
mergeSort(data,temp,0,data.length-1); q {
} > O?<?
+RM!j9Rq
private void mergeSort(int[] data, int[] temp, int l, int r) { OhN2FkxL
int i, j, k; Ws0)B8y,|
int mid = (l + r) / 2; f
]_ki
if (l == r) &g90q
return; DVwB}W~
if ((mid - l) >= THRESHOLD) g.!k>_g`
mergeSort(data, temp, l, mid); "AXgT[ O
else DAf@-~c
insertSort(data, l, mid - l + 1); Q.jThP`p
if ((r - mid) > THRESHOLD) -wx~*
mergeSort(data, temp, mid + 1, r); :%AEwRZ
else C:sgT6
insertSort(data, mid + 1, r - mid); %wru)
G?LC!9MB
for (i = l; i <= mid; i++) { 'lpCwH
temp = data; WQN`y>1#@_
} ?8s$RYp14
for (j = 1; j <= r - mid; j++) { >h~ik/|*
temp[r - j + 1] = data[j + mid]; r7V !M1
} 6A=k;do
int a = temp[l]; N<4 nb
int b = temp[r]; Dpu?JF]
for (i = l, j = r, k = l; k <= r; k++) { 98
NFJ
if (a < b) { *'H\`@L
data[k] = temp[i++]; m*B4a9f
a = temp; )f^^hEIS
} else { AZik:C"Q
data[k] = temp[j--]; \v=@'
b = temp[j]; K%
snE7X?)
} LDU4 D
} e, 2/3jO
} 60ciI,_`
A\9LJ#E
/** 0uM&F[.x@g
* @param data -\B*reC
* @param l b|E ZD3y
* @param i UEx<;P8rP
*/ ^C~R)M:C
private void insertSort(int[] data, int start, int len) { FAc^[~E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jK[*_V
} hW!n"qU
} a
@3s71
} 4bw4!z9G
} nJYIkfdA
IaOR%Bg
堆排序: EBL-+%J8
^ZS!1%1
package org.rut.util.algorithm.support; @x!+_z
,H.5TQ#
import org.rut.util.algorithm.SortUtil; h0dZr-c
-(lP8Y~gFY
/** kmu`sk"
* @author treeroot 0!0o[3*
* @since 2006-2-2 2v@B7r4}
* @version 1.0 umnQ$y
0
*/ =w`uZ;l$Q
public class HeapSort implements SortUtil.Sort{ w 2U302TZ
n`w]? bL
/* (non-Javadoc) B6Ajcfy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \k"Ct zoX
*/ A*/8j\{n
public void sort(int[] data) { .:Sk=r4u\
MaxHeap h=new MaxHeap(); -nHkO&&R
h.init(data); b]xoXC6@ t
for(int i=0;i h.remove(); KkpbZ7\@
System.arraycopy(h.queue,1,data,0,data.length); >O
rIY
} (@!K tW
d@a<Eq
private static class MaxHeap{ }f}? |&q
`[}X_d 1A
void init(int[] data){ }><[6Uz%
this.queue=new int[data.length+1]; 9MI9$s2y
for(int i=0;i queue[++size]=data; Z'!ORn#M
fixUp(size); {{M/=WqC
} }hg2}g99
} W4k$m2
s>\^dtG7
private int size=0; GBpdj}2=
n=$ne2/
private int[] queue; *ej< 0I{
KDGrX[L:6
public int get() { +|X`cmnuU
return queue[1]; <Ist^h+o
} a8Xwz@ M
1(>2tEjYT
public void remove() { ;;Z'd@
SortUtil.swap(queue,1,size--); Dic|n@_Fy
fixDown(1); HYT~AO-!
} $- %um
file://fixdown EN/t5d
private void fixDown(int k) { dy5}Jn%L
int j; $YY{|8@kjv
while ((j = k << 1) <= size) { 4<E <sD
if (j < size %26amp;%26amp; queue[j] j++; m`q&[:
if (queue[k]>queue[j]) file://不用交换 ewdTsgt'
break; L%\Wt1\[
SortUtil.swap(queue,j,k); iOb7g@=
k = j; 0#uB[N
} Qhc;Zl
} J#i7'9g
private void fixUp(int k) { ErJ@$&7
while (k > 1) { BV7P_!vt
int j = k >> 1; X2%(=B
if (queue[j]>queue[k]) ohe[rV>EX
break; .o C!~'
SortUtil.swap(queue,j,k); SVd@-
'-K
k = j; !plu;w
} OQ
w O7Z
} O_.!qk1R
qAbmQ{|w
} eu_ZsseZ
]sVWQj
} I"lzOD; eI
aTeW#:m
SortUtil: ?r8hl.Z>
X?< L<:.
package org.rut.util.algorithm; Qyx~={.C~
@b^$h:H
import org.rut.util.algorithm.support.BubbleSort; 7(tsmP
import org.rut.util.algorithm.support.HeapSort; .{`C>/"}
import org.rut.util.algorithm.support.ImprovedMergeSort; 5%fWX'mS
import org.rut.util.algorithm.support.ImprovedQuickSort; pO:]3qv
import org.rut.util.algorithm.support.InsertSort; C8Mx>6
import org.rut.util.algorithm.support.MergeSort; F?H=2mzKbz
import org.rut.util.algorithm.support.QuickSort; &zEBfr
import org.rut.util.algorithm.support.SelectionSort; =GF=_Ac
import org.rut.util.algorithm.support.ShellSort; h:?qd
:p]e4|R
/** i+~BVb
* @author treeroot }Kp<w,
* @since 2006-2-2 GQA\JYw|oY
* @version 1.0 rrj.]^E_~
*/ m}RZ)c
public class SortUtil { Z~-N'Lt{
public final static int INSERT = 1; Y(kf<Wo
public final static int BUBBLE = 2; >.K%W*t
public final static int SELECTION = 3; P\6:euI
public final static int SHELL = 4; a9{NAyl<oo
public final static int QUICK = 5; V!^0E.?a
public final static int IMPROVED_QUICK = 6; ."B{U_P&
public final static int MERGE = 7; SN L-6]j
public final static int IMPROVED_MERGE = 8; 2;
,8 u
public final static int HEAP = 9; &}2@pu[S?7
X~"p]V_
public static void sort(int[] data) { c6c@XdV
sort(data, IMPROVED_QUICK); o}/|"(K
} Ma$~B0!;s
private static String[] name={ l*&N<Yu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "qR, V9\
}; S!z3$@o
J+
S]Qoz
private static Sort[] impl=new Sort[]{ rQ]JM
new InsertSort(), F4z#u2~TC
new BubbleSort(), Vym0|cW
new SelectionSort(), 6z6\xkr
new ShellSort(), URbB2
Bi
new QuickSort(), Jx}-Y*
o
new ImprovedQuickSort(), j_<!y(W
new MergeSort(), ysIhUpd
new ImprovedMergeSort(), aHpZhR|f$
new HeapSort() ZBY2,%nAo
}; WfG +_iP?
@Bhcb.kbq
public static String toString(int algorithm){ },JJ!3
return name[algorithm-1]; Ow4(1eE_
} E JuTv%Y8
<y^_&9
public static void sort(int[] data, int algorithm) { @/^mFqr2
impl[algorithm-1].sort(data); zN]%p>,)HB
} jTt9;?)
0!lWxS0#=
public static interface Sort { !Pnjr T
public void sort(int[] data); ! {G0'
} l}VE8-XB
^4"AWps
public static void swap(int[] data, int i, int j) { Q]N&^ E
int temp = data; 81s
}4
data = data[j]; YT(Eh3ID
data[j] = temp; `=#jWZ.8m
} A7+ZY,
} JVy|SA&R