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。 CBz$N) f
插入排序: T|RW-i3
w7aC=B/{?i
package org.rut.util.algorithm.support; <2@V$$Qg.~
mxUM&`[
import org.rut.util.algorithm.SortUtil; Khp`KPxz%
/** .21[3.bp/q
* @author treeroot !? !~8J~
* @since 2006-2-2 w64 /$
* @version 1.0 YTP6m9hA+
*/ &o@IMbJ8
public class InsertSort implements SortUtil.Sort{ 8D7=]
0h ^&`H:
/* (non-Javadoc) '}3@D$YiM%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 's#"~<L^e
*/ y^pzqv
public void sort(int[] data) { y
qDE|DIez
int temp;
&!7{2E\7C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Plpt7Pa_
} ig|ol*~
} _
T ;+*
} =s3f{0G
JtA
tG%
} P?D;BAP2
Hq=5/N
冒泡排序: X.TsOoy
N0TEVDsk
package org.rut.util.algorithm.support; (0Buo#I
)1f8
H,q^
import org.rut.util.algorithm.SortUtil; q {v?2v{
h^QicvZ
/** IjJO;
* @author treeroot x
xMV2&,Jq
* @since 2006-2-2 t*X
k'(v
* @version 1.0 Xi vzhI4
*/ 3zi(|B[,?
public class BubbleSort implements SortUtil.Sort{ 1C)
l)pV
"W!Uxc
/* (non-Javadoc) o9&&u1`M/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hes$LH
*/ ~m4{GzB
public void sort(int[] data) { lU6?p")F1
int temp; 2 VgFP3
for(int i=0;i for(int j=data.length-1;j>i;j--){ UOh%"h
if(data[j] SortUtil.swap(data,j,j-1); m^hi}Am1
} hbfTv;=z
} +JQ/DNv
} 24;F~y8H
} ]!l]^/.
Y*oT(
} 6, =oTmFP
-U'3kaX5<
选择排序: :f1Q0klwP
(vL-Z[M!
package org.rut.util.algorithm.support; H#yBWvj*H
v(PwE B]
import org.rut.util.algorithm.SortUtil; dG5p`N%
^B)iBfZ
/** .8[Uk^q
* @author treeroot /q.iUwSK>
* @since 2006-2-2 E=PmOw7b
* @version 1.0 -1^dOG6*
*/ dS9L( &
public class SelectionSort implements SortUtil.Sort { B5FRe'UC
`+Ko{rf+9
/* +\r=/""DW
* (non-Javadoc) 4@|"1D3
* yCk9Xc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >;|~
z\8
*/ Ih_2")d
public void sort(int[] data) { ib$_x:OO"
int temp; ~cHpA;x9<^
for (int i = 0; i < data.length; i++) { ;fg8,(SM^
int lowIndex = i; 8#?jYhT7
for (int j = data.length - 1; j > i; j--) { +OGa}9j-
if (data[j] < data[lowIndex]) { rK^Sn7 U
lowIndex = j; ShFC@)<lJ
} 7;]n+QRfm
} i{1SUx+Re
SortUtil.swap(data,i,lowIndex); sw:o3cC]
} 3RSiu}
} PWU8 9YXp
Rn] `_[)*~
} @D:$~4ks
o u%Xnk~
Shell排序: Q[5j5vry
TV^m1uC
package org.rut.util.algorithm.support; h%2;B;p]
A}./ ;[
import org.rut.util.algorithm.SortUtil; \J@i:J6x$1
AC`4n|,zJ;
/** Atdr|2
* @author treeroot $?voQ&
* @since 2006-2-2 ="yN4+0-p
* @version 1.0 m*'^*#
*/ "YW&,X5R
public class ShellSort implements SortUtil.Sort{ A:{PPjs%LA
+@n8DM{b
/* (non-Javadoc) P;B<R"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H);O. m
*/ EMe3Xb
`
public void sort(int[] data) { .TI=3*`G
for(int i=data.length/2;i>2;i/=2){ f=$w,^)M
for(int j=0;j insertSort(data,j,i); v$H=~m
} >%x N?%
} fMGL1VN
insertSort(data,0,1); /&PRw<}>_o
} EL--?<g
]f%yeD
/** LYYz =gvZl
* @param data (4;m*'X
* @param j (Nzup3j
* @param i b#h}g>l
*/ ~Bw)rf,
private void insertSort(int[] data, int start, int inc) { xK7xAO
int temp; 4F WL\;6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 701mf1a
} m{dXN=
} 6a_MA*XK
} UaW,#P
@/(\YzQvp]
} H>zX8qP+
n\X'2
快速排序: >h!>Ll
nU^ -D1s{
package org.rut.util.algorithm.support; Jf#Ika&px
7EI5w37
import org.rut.util.algorithm.SortUtil; %9^^X6yLM
>
T$M0&<
/** ^(w%m#
* @author treeroot 5uo?KSX%
* @since 2006-2-2 V*}xlxSL
* @version 1.0 H K]-QTEn
*/ F!N D
public class QuickSort implements SortUtil.Sort{ CrvL[6i
6"OwrJB
/* (non-Javadoc) \B72 #NR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iZ^tLnc
*/ n5Coxvy1
public void sort(int[] data) { c >8IM
quickSort(data,0,data.length-1); 8ztVv
} fN!ci']
private void quickSort(int[] data,int i,int j){ :NHP,"
int pivotIndex=(i+j)/2; pm)kocG
file://swap Wqy\yS [
SortUtil.swap(data,pivotIndex,j); =sp5.-r
=hw&2c
int k=partition(data,i-1,j,data[j]); #![9QUvcf
SortUtil.swap(data,k,j); eNQQ`ll@m
if((k-i)>1) quickSort(data,i,k-1); j=q*b Qr
if((j-k)>1) quickSort(data,k+1,j); >EacXPt-O
/-{C,+cB
} BXzn-S
/** Bv=
* @param data Qru
iQ/t
* @param i %>)HAx `
* @param j CXAW>VdK_
* @return uPbGQ :%}
*/ t9QnEP'
private int partition(int[] data, int l, int r,int pivot) { fV "gL(7
do{ ' F,.y6QU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Zk={3Y
SortUtil.swap(data,l,r); ekR/X
} r bfIH":
while(l SortUtil.swap(data,l,r); cs-wqxTX[$
return l; ?W27
h
} /s/\5-U7q
zUQn*Cio e
} iNlY\67sW
2#i*'.
改进后的快速排序: j\LJ{?;jC
B(eC|:w[z
package org.rut.util.algorithm.support; *wfb~&:}
Y<ZaW{%
import org.rut.util.algorithm.SortUtil; g"KH~bN
I:l/U-b7h
/** C6PlO
* @author treeroot 5s7C;+
* @since 2006-2-2 z1AYXW6F
* @version 1.0 Qm(KvL5
*/ G`D~OI
public class ImprovedQuickSort implements SortUtil.Sort { [ Q@rW5,-
_aaQ1A`p
private static int MAX_STACK_SIZE=4096; KUE}^/%z
private static int THRESHOLD=10; G/)]aGr
/* (non-Javadoc) )<~v~|re
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \]Nt-3|`0
*/ E! s?amM4
public void sort(int[] data) { R(1N]>
int[] stack=new int[MAX_STACK_SIZE]; rL KwuZ
*LZB.84
int top=-1; FD1Z}v!5IJ
int pivot; m4m,-}KNi
int pivotIndex,l,r; -(;<Q_'s{"
; *ZiH%q,
stack[++top]=0; n N_Ylw
stack[++top]=data.length-1; 9w:F_gr
]lgI Q;r
while(top>0){ W3gBLotdg
int j=stack[top--]; Vlf =gP
int i=stack[top--]; us,~<e0
|eu:qn8
pivotIndex=(i+j)/2; *a[iq`499
pivot=data[pivotIndex]; 8q"C=t7
(Qp53g
SortUtil.swap(data,pivotIndex,j); (c\i .z
&OXWD]5$6
file://partition G@(ukt`0}
l=i-1; !A|ayYBb\
r=j;
%&81xAt
do{ 8Buus
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `,7;2ZG~O
SortUtil.swap(data,l,r); vNn$dc
} dBeZx1Dy
while(l SortUtil.swap(data,l,r); aGx[?}=
SortUtil.swap(data,l,j); }rKKIF^f\S
.B? J@,
if((l-i)>THRESHOLD){ ~USU\dni
stack[++top]=i; 9^zA(
stack[++top]=l-1; oScKL#Hu
} tB<2mjg
if((j-l)>THRESHOLD){ v-MrurQ4
stack[++top]=l+1; vK7J;U+cJ
stack[++top]=j; scZSnCrR
} |%tI!RN):
SmMJ%lgA6
} 713)D4y}
file://new InsertSort().sort(data); ixjhZk i<
insertSort(data); FG{45/0We
} F<Y>
/** "b6ew2\
* @param data RLE6=#4
*/ (RM;T @`
private void insertSort(int[] data) { 2+'4 m#@)
int temp; >$/PfyY7@#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |WUm;o4E`U
} ln&9WF\I
} g+zfa.wQ
} AfaoFn+
Z{p62|+Ck@
} {{+woL'C
;p] f5R^
归并排序: :L&d>Ii|'
rE5q
BEh
package org.rut.util.algorithm.support; 6d#:v"^,
[}1+=Ub
import org.rut.util.algorithm.SortUtil; ,enU`}9V*
'>aj5tZ>R
/** vq_v;$9}
* @author treeroot cq,8^o&
* @since 2006-2-2 <ZwmXD.VD
* @version 1.0 Rct=vDU
*/ zjlo3=FQX[
public class MergeSort implements SortUtil.Sort{ R;3T yn+
c)Ep<W<r1
/* (non-Javadoc) `ZLA=oD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dl;
*/ ]4
q6N
public void sort(int[] data) { _rIFwT1]
int[] temp=new int[data.length]; p J#<e
mergeSort(data,temp,0,data.length-1); 3A)Ec/;~
} ]R7zvcu&
t9Y?0O}/
private void mergeSort(int[] data,int[] temp,int l,int r){ Ip&Q'"HYj
int mid=(l+r)/2; lr-:o@q{
if(l==r) return ; /2jw]ekQ'
mergeSort(data,temp,l,mid); Y?b4* me
mergeSort(data,temp,mid+1,r); 0<4Swj3s7
for(int i=l;i<=r;i++){ m!H7;S-(
temp=data; #>[5NQ;$'
} !tckE\ h#N
int i1=l; 1XD|H_JG<j
int i2=mid+1; TxDzGC
for(int cur=l;cur<=r;cur++){ g0M9v]c
if(i1==mid+1) 5IfyD ]<
data[cur]=temp[i2++]; tI;pdR]
else if(i2>r) |`c=`xK7'
data[cur]=temp[i1++]; n>##,o|Vr#
else if(temp[i1] data[cur]=temp[i1++]; NUjo5.7
else \Bg?QhA_D
data[cur]=temp[i2++]; `xm4?6
} o9 g0fC
} Smjg[
48t_?2>
} =j$!N# L
%Tvy|L
,
改进后的归并排序: ye^l~
j+-+<h/(
package org.rut.util.algorithm.support; }3xZ`vX[T
%yJ
$R2%*y
import org.rut.util.algorithm.SortUtil; 8Ug`2xS<_
+i1\],7
/** _=d
X01
* @author treeroot 0s+pcqOd^
* @since 2006-2-2 Zyx92z9Y
* @version 1.0 _WeN\F~^
*/ cPL]WI0(
public class ImprovedMergeSort implements SortUtil.Sort { qL1d-nH
dXvp-oi
private static final int THRESHOLD = 10; kIlK"=
;+W9EbY2
/* gyx4= 'Q
* (non-Javadoc) :4'Fq;%C
* D/7hVwMw:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JAA{5@ST
*/ Ei&
Z
public void sort(int[] data) { &8^ch,+pD
int[] temp=new int[data.length]; KfkE'_F
mergeSort(data,temp,0,data.length-1); m=.}}DcSs
} r|!r!V8j
^+)q@{\8Y
private void mergeSort(int[] data, int[] temp, int l, int r) { @cT= t0*
int i, j, k; zbM*/:Y
int mid = (l + r) / 2; BMlu>,
if (l == r) n"P29"
return; '
+*,|;?
if ((mid - l) >= THRESHOLD) (bBr O74lR
mergeSort(data, temp, l, mid); KWzJ
else Z.v2!u
insertSort(data, l, mid - l + 1); Ag#o&Y
if ((r - mid) > THRESHOLD) MV.$Ay
mergeSort(data, temp, mid + 1, r); ZZJXd+Q}
else ;s(uaC3
insertSort(data, mid + 1, r - mid); v@KP~kp
5Rc^5Nv
for (i = l; i <= mid; i++) {
;p U=>
temp = data; hr)CxsPoRQ
} sH}q &=
for (j = 1; j <= r - mid; j++) { :lGH31GG
temp[r - j + 1] = data[j + mid]; 2-#:Y
} <Z6tRf;B
int a = temp[l]; Pu-/*Fx
int b = temp[r]; V`;$Ua;y
for (i = l, j = r, k = l; k <= r; k++) { MlBw=Nr
if (a < b) { !`VC4o
data[k] = temp[i++]; tq^d1b(j4
a = temp; m?$peRn3{
} else { vxrRkOU1
data[k] = temp[j--]; 5|^{t00T~
b = temp[j]; ./!6M
} _s> ZY0
} _/iw=-T
} >*"6zR2 o
@uaf&my,P
/** OalBr?^
* @param data 83ajok4E
* @param l QoVRZ $!p
* @param i FYtf<C+
*/ iH#b"h{w
private void insertSort(int[] data, int start, int len) { 14,Pf`5Sz
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'z}Hg
*
} }CyS_Tc
} 6-w'? G37
} N1Pm4joH%
} 0-9.u`)#yu
Z;XiA<|
堆排序: D]UqM<0Rz
dU4G!
package org.rut.util.algorithm.support; D" 4*&
%^C.e*
import org.rut.util.algorithm.SortUtil; 49("$!
xWa96U[
/** Qn*a#]p
* @author treeroot p@se
5~
* @since 2006-2-2 5v
uB87`
* @version 1.0 qXQ/M]
*/ k;?Oi?]
public class HeapSort implements SortUtil.Sort{ \f AL:mJ
Z_F}Y2-w9
/* (non-Javadoc) ~SW_jiKM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <e:2DB&
*/ ERE1XOe=D
public void sort(int[] data) { [v!TQwMU
MaxHeap h=new MaxHeap(); u
VZouw#
h.init(data); C;3>q*Am4
for(int i=0;i h.remove(); =CE(M},d
System.arraycopy(h.queue,1,data,0,data.length); fzVU9BU
} ZPISclSA+
\\WIu?
private static class MaxHeap{ p`i_s(u
F$QAWs
void init(int[] data){ g+-=/Ge
this.queue=new int[data.length+1]; ,VM)ZK=Tr
for(int i=0;i queue[++size]=data; c&o|I4|Y,
fixUp(size); 3N]
} %!>~2=Q2*
} _Wjd`*
p
FkqDU
private int size=0; !QB(M@1
0H6^2T<
private int[] queue; 1{.=T&eG#
mu1Lg s$;
public int get() { 8>}^W
return queue[1]; s]X]jfA.
} 0uf'6<f R
( _{\tgSm
public void remove() { r95l.v
SortUtil.swap(queue,1,size--); "^~>aVuXf
fixDown(1); 7D;g\{>M
} j3W)5ZX
file://fixdown E!eBQ[@
private void fixDown(int k) {
'kD~tpZ
int j; #jja#PF]7
while ((j = k << 1) <= size) { O-M4NKl]6
if (j < size %26amp;%26amp; queue[j] j++; \(C_t1
if (queue[k]>queue[j]) file://不用交换 ]/p)XHKo
break; )cMW,
SortUtil.swap(queue,j,k); F_Q?0 Do0'
k = j; $=?CW(
} :PrQ]ss@C5
} !U@?Va~Zn
private void fixUp(int k) { E,#J\)'z
while (k > 1) { WaVP+Ap
int j = k >> 1; 0wzq{~\{=_
if (queue[j]>queue[k]) S'I{'jP5
break; +N9(o+UrU
SortUtil.swap(queue,j,k); ,AC+s"VS
k = j; 9*@K l`\
} -'tgr6=|w"
} bIP'(B#1K
ZjE!?
'(ef
} 4I>I
9Fl}"p[>L.
} X:*Ut3"
u= |hRTD=
SortUtil: }<EA)se"
s^/<6kwO
package org.rut.util.algorithm; y<G@7?
WheJ 7~
import org.rut.util.algorithm.support.BubbleSort; b ;Vy=f
import org.rut.util.algorithm.support.HeapSort; $?l?
import org.rut.util.algorithm.support.ImprovedMergeSort; sW":~=H
import org.rut.util.algorithm.support.ImprovedQuickSort; ugM,wT&~Y
import org.rut.util.algorithm.support.InsertSort; dz',!|>
import org.rut.util.algorithm.support.MergeSort; v@43%`"Gj
import org.rut.util.algorithm.support.QuickSort; tNskB`541
import org.rut.util.algorithm.support.SelectionSort; u"%i3%Yjh
import org.rut.util.algorithm.support.ShellSort; kQRkby
X^PR];V:$
/** 0;Y|Ua[G+~
* @author treeroot x+}6qfc$9k
* @since 2006-2-2 :eK;:pN
* @version 1.0 QES[/i +
*/ L`yyn/2>
public class SortUtil { y7I')}SC
public final static int INSERT = 1; |]5g+sd
public final static int BUBBLE = 2; HR85!S`
public final static int SELECTION = 3; rurC! -
public final static int SHELL = 4; 4s<*rKm~
public final static int QUICK = 5; kq[*q-:"x
public final static int IMPROVED_QUICK = 6; hCX}*
public final static int MERGE = 7; CW(]6s u{
public final static int IMPROVED_MERGE = 8; xud
public final static int HEAP = 9; U!"+~d)
U$J l5[`F^
public static void sort(int[] data) { nj*B-M\p
sort(data, IMPROVED_QUICK); H1PW/AW
} Z6}B}5@y
private static String[] name={ -Bqn^ E
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lE+v@Kb:
}; V`KXfY
=OIxG}*
private static Sort[] impl=new Sort[]{ 7XE/bhe%S
new InsertSort(), "}i\"x;s
new BubbleSort(), Go}C{(4T
new SelectionSort(), I$4GM
new ShellSort(), _LV;q! /j
new QuickSort(), =Tf
uwhV
new ImprovedQuickSort(), af]&3(33
new MergeSort(), *`:zSnu
new ImprovedMergeSort(), iPMI$
new HeapSort() T jO}P\p
}; s4 o-*1R*`
`Jh> 1l
public static String toString(int algorithm){ 6]dK,
return name[algorithm-1]; 8X`Gm!)
} c <[?Z7y
@Z.s:FV[
public static void sort(int[] data, int algorithm) { |IqQ%;H
impl[algorithm-1].sort(data); .(tga&]
} S1pikwB
7E$
e1=
public static interface Sort { !2WRxM
public void sort(int[] data); ~_P,z?
} 7FMg6z8~
L$7
NT}L
public static void swap(int[] data, int i, int j) { I
U/HYBJH
int temp = data; 1(`>9t02/?
data = data[j]; U:eahK
data[j] = temp; 4/$ $?w4
} v\#69J5.>)
} >dol