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。 =-Hhm($n
插入排序:
*eHa4I
|?J57(
package org.rut.util.algorithm.support; 2z{B
>bWpj8Kv
import org.rut.util.algorithm.SortUtil; FNUs
.d"
/** %P ~;>4i,
* @author treeroot Jd/d\P
* @since 2006-2-2 d,?D '/
* @version 1.0 )A*53>JV
*/ c<Cf|W
public class InsertSort implements SortUtil.Sort{ p^ (Z
w#)u+^ -
/* (non-Javadoc) T(u;<}e@[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +JYb)rn$^
*/ &ic'!h"
public void sort(int[] data) { 3ux7^au
int temp; sDBSc:5+e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $yi:0t8t
} G0!6rDu2,
} Jf4`
2KN\
} DNZ,rL:h
b4wT3
} 445JOP
M-].l3
冒泡排序: :q3w;B~
3:Nc`tM_
package org.rut.util.algorithm.support; 3PvxU|*F
U;i CH
import org.rut.util.algorithm.SortUtil; Gjeb)Y6N
g"" 1\rc=
/** MJX4;nbl
* @author treeroot ??aO3Vm{
* @since 2006-2-2 A-L1vu;
* @version 1.0 I(7GVYM
*/ Pqx?0f)
public class BubbleSort implements SortUtil.Sort{ 4z P"h0
mfg>69,w
/* (non-Javadoc) Fc[vs52
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mCt/\
*/ q}p$S2`
public void sort(int[] data) { `W}pAmhj
int temp; ?ch?q~e)
for(int i=0;i for(int j=data.length-1;j>i;j--){ oU,8?(}'~
if(data[j] SortUtil.swap(data,j,j-1); 9O&m7]3
} oJNQdW[
} L/Kb\\f
} ,
poc!n//
} <D:q4t
!X: TieyVu
} SrNc
yCR8 c,'8
选择排序: VDOC>
Cxq|N]E
package org.rut.util.algorithm.support; tvf.K+
wz3X;1l`c
import org.rut.util.algorithm.SortUtil; Jc?zX8>Ae:
3mofp`e
/** nygGI_[l
* @author treeroot HD#>K 7
* @since 2006-2-2 O)V;na
* @version 1.0 &8f/ 6dq
*/ h-"q <eY"
public class SelectionSort implements SortUtil.Sort { *=B<S/0
e.L&A|
/* 4Ia'Yr
* (non-Javadoc) .?CaU
* IT= y+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HaL'/V~
*/ Z1
)1s
public void sort(int[] data) { 075IW"p'
int temp; esZhX)dS
for (int i = 0; i < data.length; i++) { 6bs-&Vf
int lowIndex = i; lIEZ=CEmY
for (int j = data.length - 1; j > i; j--) { I 2AQ
G
if (data[j] < data[lowIndex]) { KsTGae;ds
lowIndex = j; 5N>f lQ
} \C~6
'
} c}$>UhLe
SortUtil.swap(data,i,lowIndex); nm`(;<W
} %JPr 7 }
} hj"JmF$m
rD$5]%Y
} kuBtPZ
2 {WZ?H93a
Shell排序: vv)w@A:Vn)
&k| EG![
package org.rut.util.algorithm.support; m4W (h6
q]f7D\ M
import org.rut.util.algorithm.SortUtil; {?^ES*5
;
Yc\O:Qq
/** 6'mZM=d
* @author treeroot ~t2"L|i
* @since 2006-2-2 q1YNp`]0i8
* @version 1.0 +%[,
m&
*/ *`qI<]!
public class ShellSort implements SortUtil.Sort{ w(_:+-rqQ<
^F?B_'
/* (non-Javadoc) x&u@!# d]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7>@0nHec
*/ 20$Tky_
public void sort(int[] data) { ik?IC$*n3i
for(int i=data.length/2;i>2;i/=2){ ^y ', l
for(int j=0;j insertSort(data,j,i); Ow1+zltgj-
} "i&n;8?Y
} K)l*$h&-
insertSort(data,0,1); )IK%Dg(v
} V6ECL6n
q2|z
\
/** JcP<@bb>B
* @param data }Gb^%1%M
* @param j SZ4y\I
* @param i <l,e6K
*/ c|m?f
private void insertSort(int[] data, int start, int inc) { tMU10=d
int temp; @>'Wiq!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @o@SU"[?_
} SK/}bZ;f
} t3}_mJ
} #,lbM%a
\QSD*
} ~ cu+QR)
c uAp,!
快速排序: /^{Q(R(X<
*a_QuEw_k
package org.rut.util.algorithm.support; .'+JA:3R
u-n$%yDS
import org.rut.util.algorithm.SortUtil; ZA_~o#0%
p+Bvfn
/** tIBEja^l
* @author treeroot ;1,#rTs
* @since 2006-2-2 ZFX}=?+
* @version 1.0 :+^`VLIf
*/ WH $*\IGJL
public class QuickSort implements SortUtil.Sort{ *x#5S.i1
-"^"& )
/* (non-Javadoc) +&X>ul
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u0+<[Ia'q
*/ )('{q}JxV
public void sort(int[] data) { Nt<Ac&6
s
quickSort(data,0,data.length-1); WpI5C,3Z!l
} WV|9d}5
private void quickSort(int[] data,int i,int j){ S)2 U oj
int pivotIndex=(i+j)/2; hZe9 Y?)
file://swap 3PzF^ 8KJ
SortUtil.swap(data,pivotIndex,j); )086u8w )y
RC"xnnIJv
int k=partition(data,i-1,j,data[j]); m`XaY J
SortUtil.swap(data,k,j); \q-["W34
if((k-i)>1) quickSort(data,i,k-1); fB; o3!y
if((j-k)>1) quickSort(data,k+1,j); }LIf]YK
9%P$e=Ui#
} lg (>n&
/** kmfz.:j{
* @param data =>TXo@rVN
* @param i ZZ0b!{qj3
* @param j C}XB%:5H5
* @return ,tBc%&.f
*/ +x:VIi
private int partition(int[] data, int l, int r,int pivot) { k8.,id
do{ OnW,R3eg
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gd31d s!G
SortUtil.swap(data,l,r); jI}{0LW&F&
} N~yGtnW
while(l SortUtil.swap(data,l,r); #zd}xla0]
return l; *i7-_pT
} 7x
|Pgu(
P/9|mYmsq
} !G~\9
#DTBdBh?I
改进后的快速排序: EX3;|z@5;
'aZAWY d
package org.rut.util.algorithm.support; 97!VH>MX
5i3nz=~o
import org.rut.util.algorithm.SortUtil; 9EZh~tdV[
)i.\q
/** zpxyX|
* @author treeroot ?v@q&
* @since 2006-2-2 );F
/P0P
* @version 1.0 @(tiPV
*/ ==7=1QfP
public class ImprovedQuickSort implements SortUtil.Sort { 8\Z/mU*4
O~#OVFJ9=
private static int MAX_STACK_SIZE=4096; 5U l=Nv]
private static int THRESHOLD=10; 9c@\-Z'
/* (non-Javadoc) lFM'F [-?-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U
&W}c^#
*/ "l09Ae'V
public void sort(int[] data) { w+ibY
int[] stack=new int[MAX_STACK_SIZE]; YC~kq?
p7)b@,
int top=-1; :}w^-I"
int pivot; 1Yv#4t
int pivotIndex,l,r; [SLBA_d
VrRBwvp-K
stack[++top]=0; {7q +3f <
stack[++top]=data.length-1; pe@/tO&I
]
i\a[3
while(top>0){ ;6zp,t0
int j=stack[top--]; _RzcMX
int i=stack[top--]; [+$o`0q;N?
Ed~2Qr\65
pivotIndex=(i+j)/2; D8_-Dvp7H
pivot=data[pivotIndex]; [W,maTM"
~rU{Q>c
SortUtil.swap(data,pivotIndex,j); (svd~h e2
Os7 3u#!'
file://partition Mj@ 0F
2hy
l=i-1; J$<g"z3
r=j; _\xd]~ELj
do{ K_~SJbl
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [R[Suf
SortUtil.swap(data,l,r); F{aM6I
} GwVSRI:[N
while(l SortUtil.swap(data,l,r); AfW9;{j&I
SortUtil.swap(data,l,j); ?_c*(2i&^
bQM_rqjJGw
if((l-i)>THRESHOLD){ |[lM2
stack[++top]=i; ddD $ 4+
stack[++top]=l-1; Z)zmT%t
} lF LiW
if((j-l)>THRESHOLD){ gobqS+c
stack[++top]=l+1; Z66@@?`
stack[++top]=j; wKAc ;!
} (Sg52zv
^E8eW
} FPPGf!Eq
file://new InsertSort().sort(data); nMHs5'_y
insertSort(data); $.@)4Nu!_
} ztS'Dp}q<
/** O8:,XTAN
* @param data LA^H213N|
*/ xcYYo'U
private void insertSort(int[] data) { ^m:?6y_uw
int temp; AiO29<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0TI+6u
} P}QuGy[
} 8^N"D7{mO
} l0$
+)FKd
COK7 i^
} Z*|qbu)
v2Bks2
归并排序: '
RjFWHAp
<4Jo1
package org.rut.util.algorithm.support; 8BZDaiE"
S|%f<zAtJ
import org.rut.util.algorithm.SortUtil; Q04iuhDO:
x+9aTsZ
/** GxGZxf*(
* @author treeroot ,Mwj`fgh
* @since 2006-2-2 $u9y
H Z
* @version 1.0 <3>Ou(F
*/ xCV3HnZ
public class MergeSort implements SortUtil.Sort{ U:`g12
`?VB)
/* (non-Javadoc) oY{r83h{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h&vq}
*/ |f~p3KCfV
public void sort(int[] data) { #9Z*.
int[] temp=new int[data.length]; 5xHl6T+
mergeSort(data,temp,0,data.length-1); r=+r5k"`
} H{P"$zj`l
&4yI]
private void mergeSort(int[] data,int[] temp,int l,int r){ |vnfY;
;z1
int mid=(l+r)/2; <c6C+OWT,
if(l==r) return ; k]"Rg2>%
mergeSort(data,temp,l,mid); <5~} !N X`
mergeSort(data,temp,mid+1,r); Ee##:I[z
for(int i=l;i<=r;i++){ X] /r'Tz
temp=data; s Hu~;)
} '@iS5Fni
int i1=l; ~J6c1jG
int i2=mid+1; dt
4_x1
for(int cur=l;cur<=r;cur++){ Ss&R!w9p
if(i1==mid+1) J~:/,'Ea
data[cur]=temp[i2++]; mYN|)QVKy
else if(i2>r) Cj}1 )qWq
data[cur]=temp[i1++]; .Tdl'y:..
else if(temp[i1] data[cur]=temp[i1++]; y@G5I>v
else ,bCPO`45
data[cur]=temp[i2++]; (yAQm pp
} t\]CdH`+
} HQ+:0"B
It4J\S
} Kl$!_ $
s"G6aM
改进后的归并排序: ^=wG#!#V"1
b#.hw2?a`
package org.rut.util.algorithm.support; `W8GfbL
=1%3".
"n@
import org.rut.util.algorithm.SortUtil; l\*}
J%;TK6
/** R)#D{/#FW
* @author treeroot 3
$Uv
* @since 2006-2-2 }{S W~yW
* @version 1.0 fdN-Zq@'
*/ N@^?J@#V
public class ImprovedMergeSort implements SortUtil.Sort { ])a?ri
]RQQg,|D
private static final int THRESHOLD = 10; A[ ZJS
#T n~hnW
/* ^c^9kK'
* (non-Javadoc) BRV /7ao="
* t}`|\*a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]`y4n=L.
*/ Kig.hHj@
public void sort(int[] data) { `yHV10
int[] temp=new int[data.length]; pP)0 l
mergeSort(data,temp,0,data.length-1); /H,!7!6>?
} j+J)S1
r 06}@ 7
private void mergeSort(int[] data, int[] temp, int l, int r) { ?4_^}B9
int i, j, k; |jaUVE_2[
int mid = (l + r) / 2; &|26x
>
if (l == r) U\
y?P:yy
return; Om{[ <tL
if ((mid - l) >= THRESHOLD) >NW
/0'/
mergeSort(data, temp, l, mid); M\8FjJ>9
else 3`k1
insertSort(data, l, mid - l + 1); ho@f}4jhQ3
if ((r - mid) > THRESHOLD) ALwkX"AN
mergeSort(data, temp, mid + 1, r); *n2Q_o
else yIbz\3
insertSort(data, mid + 1, r - mid); M0 x5s@
?U2ed)zzw
for (i = l; i <= mid; i++) { }jfU qqFd
temp = data; MlsF?"H p
} 9 YU7R)
for (j = 1; j <= r - mid; j++) { 7
4aap2^
temp[r - j + 1] = data[j + mid]; $[[6N0}*:
} or~o'
int a = temp[l]; B.K"1o
int b = temp[r]; VE6T&fz`
for (i = l, j = r, k = l; k <= r; k++) { yK0Q,
if (a < b) { EUe2<G
data[k] = temp[i++]; D_9&=aa'
a = temp; =6j
5,
} else { <Ky\ ^
data[k] = temp[j--]; }`Q'!_`
b = temp[j]; d^Ra1@0"q2
} #d*mG =
} KcfW+>W3
} V@84Cb
usR19 _E-
/** z>&Py(
* @param data #:vos VqG
* @param l WMZa6cH
* @param i HQaKG4Z
*/ [lQp4xgxi
private void insertSort(int[] data, int start, int len) { ,ye>D='
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %g0"Kj5
} ,^,Vq]$3
} ^;NM'Z
} 1B6Go
} +fAAkO*GP
.
%tc7`k8
堆排序: ).N }x^
H<%7aOwO2
package org.rut.util.algorithm.support; 0[T!}F^%e
FD#?pVyPn^
import org.rut.util.algorithm.SortUtil; CTR|b}!
t_3)}
/** zScV 9,H1
* @author treeroot h^~eTi;c]Q
* @since 2006-2-2 ~0|~Fg
* @version 1.0 )(\5Wk9(
*/ A,lcR:@w
public class HeapSort implements SortUtil.Sort{ =a?l@dI]
^P:9iu)+]~
/* (non-Javadoc) `\q4z-<-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j"_V+)SD
*/ p."pI Bd
public void sort(int[] data) { Zj~tUCc
MaxHeap h=new MaxHeap(); T
{(6*^g<B
h.init(data);
?O\n!c
for(int i=0;i h.remove(); 6VQ*z8wLw
System.arraycopy(h.queue,1,data,0,data.length); =35EG{W(
} #TZYe4#f
8_Y{7;<ey
private static class MaxHeap{ ]Vl*!,(i
%I(N
void init(int[] data){
=^q:h<
this.queue=new int[data.length+1]; O<iE,PN)
for(int i=0;i queue[++size]=data; r&1N8o
fixUp(size); e@Z(z^V
} AvEJX0"\df
} JF%+T yMe
*J8j_-i,R
private int size=0; g}$]K!F
WsJ3zZc
private int[] queue; #R305
3r+vp yu
public int get() { =o{zw+|% %
return queue[1]; ',kYZay
} Xn$]DE/r}N
4eBM/i
public void remove() { ub+>i
SortUtil.swap(queue,1,size--); 0RYh4'=F
fixDown(1); bX|Z||img
} ~e~4S~{
file://fixdown D>?%p"e
private void fixDown(int k) { lp!@uoN^T
int j; DD"]as"#
while ((j = k << 1) <= size) { <z %zzc1s
if (j < size %26amp;%26amp; queue[j] j++; "p#mNc
if (queue[k]>queue[j]) file://不用交换 hKQT,
break; Z)62/`C)
SortUtil.swap(queue,j,k); C%}FVO\c
k = j; 2Ev~[Hb.
} o8
q@rwu3
} :~zK0v"
private void fixUp(int k) { 9i yNR!
while (k > 1) { d@7
]=P:
int j = k >> 1; WkXa%OZ
if (queue[j]>queue[k]) 2P!Pbl<
break; s7(mNpo
SortUtil.swap(queue,j,k); R\A5f\L9
k = j; iW-w?!>|m
} 2[r#y1ro
} k
U*\Fa*E
d=xU
f`^
} O6Xu/X]
4}W*,&_
} #&1mc_`/
4@/[aFH
SortUtil: h[ba$S,T
z1T.\mzfX
package org.rut.util.algorithm; $w)yQ %
Rl.3p<sX
import org.rut.util.algorithm.support.BubbleSort; SEIGs_^'\
import org.rut.util.algorithm.support.HeapSort; Q;)[~p
import org.rut.util.algorithm.support.ImprovedMergeSort; 'F5&f9A
import org.rut.util.algorithm.support.ImprovedQuickSort; 8nt:peJ$+
import org.rut.util.algorithm.support.InsertSort; #)GL%{Oa
import org.rut.util.algorithm.support.MergeSort; ^7Z)/c`"
import org.rut.util.algorithm.support.QuickSort; \[B5j0vV,
import org.rut.util.algorithm.support.SelectionSort; &P&M6v+
import org.rut.util.algorithm.support.ShellSort; Zh{Pzyp
yJppPIW^
/** dE.R$SM
* @author treeroot f lVQG@
* @since 2006-2-2 p#qQGJe
* @version 1.0 9Fv1D
*/ XBF#ILJ
public class SortUtil { owmV7E1
public final static int INSERT = 1; |@sUN:G4k
public final static int BUBBLE = 2; L'H'E,
public final static int SELECTION = 3; 52C>f6w
public final static int SHELL = 4; `rbTB3?
public final static int QUICK = 5; t}c ymX~
public final static int IMPROVED_QUICK = 6; BC Jo/m
public final static int MERGE = 7; (}V.xi
public final static int IMPROVED_MERGE = 8; '.c[7zL
public final static int HEAP = 9; Ldf<
rt_%_f>qd
public static void sort(int[] data) { =n
cu#T]
sort(data, IMPROVED_QUICK); pTprU)sa7
} [_G_Wl'#8
private static String[] name={ pBL,kqYNA>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^QpP'
}; 2h IM!wQ
Uk`ym
private static Sort[] impl=new Sort[]{ i'H{cN6
new InsertSort(), {SY@7G]
new BubbleSort(), ~ZweP$l
new SelectionSort(), ]EnB`g(4;
new ShellSort(), E<:XHjm
new QuickSort(), ?k TVC
new ImprovedQuickSort(), }cn46L%/
new MergeSort(), `J'xVq#O
new ImprovedMergeSort(), *l)_&p
new HeapSort() ?S~HnIn
}; dPc*!xrq
}JeGjpAcV
public static String toString(int algorithm){ g"EvMv&
return name[algorithm-1]; 4&r[`gL
} Xx~OZ^t&Vn
hxP%m4xF +
public static void sort(int[] data, int algorithm) { 5k)QjZo
impl[algorithm-1].sort(data); a:r8Jzr
} f-F+Y`P
3=RV Jb
public static interface Sort { ?T3zA2
public void sort(int[] data); ^ r-F@$:.
} }3E@]"<cVR
Oz'x5/%G
public static void swap(int[] data, int i, int j) { EcxPbRg
int temp = data; <1YINkRz
data = data[j]; :1^
R$0d
data[j] = temp; $A;jl`ng
} UOJx-o!c?
} B8F.}M-!