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。 8;r7ksE~
插入排序: uVBMI.&w
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package org.rut.util.algorithm.support; ^"N sb &
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import org.rut.util.algorithm.SortUtil; +^6v%z
/** W%k0_Y/5
* @author treeroot P=jbr"5Q:
* @since 2006-2-2 U2(|/M+
* @version 1.0 .+"SDtoX
*/ 389puDjy
public class InsertSort implements SortUtil.Sort{ s`$px2Gw
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/* (non-Javadoc) @Fl&@ $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4gNF;
*/ Cq0S8Or0
public void sort(int[] data) { \I4*|6kA
int temp; ;_ ^"}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y=6b oT
} K)`\u7Bu
} L,F )l2
} %Jr6pmc
= +uUWJ&1G
} q;kN+NK64
Wo^r#iRko
冒泡排序: FrNW@
W,^(FR.
package org.rut.util.algorithm.support; :_qgpE<
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import org.rut.util.algorithm.SortUtil; AwKxt'()^
t*? CD.S
/** 82X}@5o2
* @author treeroot gr/o!NC
* @since 2006-2-2
Bkn-
OG
* @version 1.0 |x AwiF_
*/ wghz[qe
public class BubbleSort implements SortUtil.Sort{ 3psCV=/z
\c! LC4pE
/* (non-Javadoc) F H'jP`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N>fC"
*/ Cz\(.MWNZ
public void sort(int[] data) { $UZ4,S?V
int temp; 35;)O -
for(int i=0;i for(int j=data.length-1;j>i;j--){ gJVakR&
if(data[j] SortUtil.swap(data,j,j-1); T1y,L<7?
} J]f\=;z;<a
} $o"PQ!z
} C_[V[k0(
} <N %8"o
\Mv8pU
} ;n*N9-|.
Z:#-4CiP
选择排序: H>-?/H
C/Ig.KmXF{
package org.rut.util.algorithm.support; ({cgak
"mAVkq~
import org.rut.util.algorithm.SortUtil; m<BL/7
,uD>.->
/** N.q4Ar[x#p
* @author treeroot c?0uv2*Yh
* @since 2006-2-2 <[^nD>t_
* @version 1.0 2O|o%`?
*/ FxKb
public class SelectionSort implements SortUtil.Sort { DlR&Lnv
6 qK0G$>
/* `he{"0U~S
* (non-Javadoc) p;VqkSQ76
* N,w;s-*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qVFz-!6b
*/ |67j__XC
public void sort(int[] data) { yKO84cSl
int temp; /FiFtAbb
for (int i = 0; i < data.length; i++) { q4$R?q:^
int lowIndex = i; rG"}CX`]:
for (int j = data.length - 1; j > i; j--) { aW3yl}`{
if (data[j] < data[lowIndex]) { Osb"$8im
lowIndex = j; G{ rUqo
} v&U'%1|
} }Kq5!XJV9C
SortUtil.swap(data,i,lowIndex); eb:mp/
} >R?EJ;h
} 181-m7W
{Gs&u>>R"^
} 4yC{BRbi
VG'oy
Shell排序: /D_8uTS>d[
#UC4l]Ru A
package org.rut.util.algorithm.support; fp9ksxb@m
Z{/C4" F
import org.rut.util.algorithm.SortUtil; y^zVb\"4
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/** Yuze9b\[
* @author treeroot bK%go
* @since 2006-2-2 9il!w
g?
* @version 1.0 4j)Y>
*/ +*g[hRw[
public class ShellSort implements SortUtil.Sort{ 5.xvOi|.
<27B*C M
/* (non-Javadoc) muo7KUT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V0L^pDLOV
*/ "8Pxf=
public void sort(int[] data) { `NV =2T
for(int i=data.length/2;i>2;i/=2){ <P( K,L?r
for(int j=0;j insertSort(data,j,i); qo.~5
} 6(oGU4
} L5cNCWpo
insertSort(data,0,1); y]?%2ud/ =
} 9L?EhDcDV
i,ku91T
/** Yh:*.@
* @param data M!=v"C#
* @param j quf,ZK5
* @param i l~&efAJ-$
*/ `R8~H7{I6
private void insertSort(int[] data, int start, int inc) { X8bo?0
int temp; Lq
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )TM ![^d
} N{P (ym2yR
} _Ux>BJmP
} AUoi$DF(@
QE!cf@~n"
} sXl7
8pDJz_F!{
快速排序: .'"+CKD.N
>Z|4/PF
package org.rut.util.algorithm.support; )TyL3Z\>(
D2>EG~xWq
import org.rut.util.algorithm.SortUtil; %dL|i2+*8
'y}A3RqN
/** Y*f7& '[
* @author treeroot >K-O2dry*
* @since 2006-2-2 % 9BC%w]y
* @version 1.0 \I,<G7!0
*/ Qkqn~>
public class QuickSort implements SortUtil.Sort{ V* fDvr0
pa+^5N
/* (non-Javadoc) h+.^8fPR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x`%;Q@G
*/ H:9(
XW
public void sort(int[] data) { DfV_08
quickSort(data,0,data.length-1); %<DRrKt
} PpU : 4;en
private void quickSort(int[] data,int i,int j){ f|6%71
int pivotIndex=(i+j)/2; 5yxZ
5Ni!
file://swap EE&~D~yHUL
SortUtil.swap(data,pivotIndex,j); :n'QNGj
,)GCg@7B
int k=partition(data,i-1,j,data[j]); gNLjk4H,S[
SortUtil.swap(data,k,j); f*5=,$0
if((k-i)>1) quickSort(data,i,k-1); uVu`TgbZ
if((j-k)>1) quickSort(data,k+1,j); ]pb;q(?^
FNmIXpAn*@
} ])~*)I~Y
/** 3QUe:8
* @param data wqE ]o=
k
* @param i P).
@o.xl
* @param j c!Pi)
* @return PU?kQZU~)
*/ = "c
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private int partition(int[] data, int l, int r,int pivot) { $am7 xd
do{ _E'M(.B<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uLhamE)
SortUtil.swap(data,l,r); Q1&: +7%
} 3tIIBOwg[
while(l SortUtil.swap(data,l,r); 1oX"}YY1
return l; z^}T=
$&
} 0yAvAx
j*QY_Ny*
} J4lE7aFDA~
%iD>^ Dp
改进后的快速排序: mvUYp,JECl
R"O9~s6N
package org.rut.util.algorithm.support; M_79\Gz"
L?9Vz&8]
import org.rut.util.algorithm.SortUtil; m>NRIEA6
s|,gn 5
/** x:l`e:`y9
* @author treeroot A%+~
* @since 2006-2-2 >t*zY~R.
* @version 1.0 YLobBtXc9
*/ ItOVx!"@9
public class ImprovedQuickSort implements SortUtil.Sort { 5QSd$J
7BI0g@$Nn]
private static int MAX_STACK_SIZE=4096; G =< KAJ
private static int THRESHOLD=10; SC|cCK hqi
/* (non-Javadoc) Z[({; WtF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uut,cQ". d
*/ JxD@y}ZYE
public void sort(int[] data) { G|^gaj '9
int[] stack=new int[MAX_STACK_SIZE]; UdL`.D,
k9R1E/;
int top=-1; 1Tiq2+hmf
int pivot; &I!2gf
int pivotIndex,l,r; NoYu"57\
zo\XuoZ
stack[++top]=0; @1n
stack[++top]=data.length-1; ?;{A@icr
B0R[f
while(top>0){ e2B~j3-?z
int j=stack[top--]; j./bVmd.
int i=stack[top--]; >Q+EqT
89 fT?tT
pivotIndex=(i+j)/2; DMs|Q$XB
pivot=data[pivotIndex]; bQ
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2_F`ILCML
SortUtil.swap(data,pivotIndex,j); t 8M3VGN
W8":lpp
file://partition 8o{ SU6pH
l=i-1; Q?1 KxD!
r=j; qHHWe<}OT
do{ 7B&nV92S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ip2JzE
SortUtil.swap(data,l,r); +pe_s&
} Xq)'p8C?
while(l SortUtil.swap(data,l,r); >nr1|2
SortUtil.swap(data,l,j); mZM5aTQ3
n.A[Z
if((l-i)>THRESHOLD){ /VJ@`]jhDf
stack[++top]=i; `L;I/Hp
stack[++top]=l-1; n$=n:$`q
} }W|CIgF*
if((j-l)>THRESHOLD){ gJF;yW4
stack[++top]=l+1; 1m![;Pg3
stack[++top]=j; 'QW 0K]il
} }y[o[>
6Jj)[ R\5=
} >eRbasshEI
file://new InsertSort().sort(data); ?$s2]}v
insertSort(data); sPZa|AKHb
} ^OQ_iPPI
/** ?tSY=DK\n
* @param data =3J~Fk
*/ BO[A1'>
private void insertSort(int[] data) { xMuy[)b
int temp; "?S#vUS+ 2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qrOTb9&y
} pxY5S}@
} T:}Ed_m}q
} k2;8~LqF
F%Mlid;1
} GuS3O)6Sg
BM3)`40[]
归并排序: JTs.NY
<z
fi,=z
package org.rut.util.algorithm.support; {u5)zVYC,U
I}8F3_b,#
import org.rut.util.algorithm.SortUtil; $@#nn5^IX
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/** (sl]%RjGa
* @author treeroot t(_XB|AKm
* @since 2006-2-2 "thu@~aC
* @version 1.0 ' Uc|[l]
*/ 8?)Da&+f
public class MergeSort implements SortUtil.Sort{ f,uxoAS
)0'O!O
/* (non-Javadoc) h|-r t15
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) om/gk4S2
*/ $8eq&_gJ
public void sort(int[] data) { 2]C0d8=*?
int[] temp=new int[data.length]; }5S2v+zE
mergeSort(data,temp,0,data.length-1); 4Fz^[L}[
} 67sb
D<r
dm 2_Fj
private void mergeSort(int[] data,int[] temp,int l,int r){ Q,DumOq
int mid=(l+r)/2; c9ZoO;
if(l==r) return ; Y}WO`+Vf5
mergeSort(data,temp,l,mid); ( Rf)&KN
mergeSort(data,temp,mid+1,r); %%3ugD5i!
for(int i=l;i<=r;i++){ IM@Qe|5
temp=data; ! TRiFD
} %-SP
int i1=l; 97&6i TYA
int i2=mid+1; 1R:h$*-z
for(int cur=l;cur<=r;cur++){ <T&$1 m{
if(i1==mid+1) nrxN_0 R%
data[cur]=temp[i2++]; @a3<fmJ
else if(i2>r) *Js<VR
data[cur]=temp[i1++]; jBB<{VV|
else if(temp[i1] data[cur]=temp[i1++]; ~_oTEXT^O
else ;x7SY;0*
data[cur]=temp[i2++]; ?IWLl
} UHg^F4>4
} 9\n}!{@i
x
Dr^&rC
} Uexb>|
Y/hay[6
改进后的归并排序: dGfWRqS]
^KhFBed
package org.rut.util.algorithm.support; Fb}9cpz{
'1{~y3
import org.rut.util.algorithm.SortUtil; dy0!Zz
0b|!S/*A3
/** w5|"cD#8A
* @author treeroot vTP_vsdeG
* @since 2006-2-2 )a6i8b3
* @version 1.0 gGX/p6"
*/ bEE:6)]G
public class ImprovedMergeSort implements SortUtil.Sort { eQeNlCG
SVpe^iQ]1\
private static final int THRESHOLD = 10; !6}Cs3.
un/R7"
/* ~cez+VQe
* (non-Javadoc) .Q#Eb %%
* M6I1`Lpf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ae<KUThm.
*/ ]#q dA(Kl
public void sort(int[] data) { C8jZcs#4
int[] temp=new int[data.length]; kP6r=HH@
mergeSort(data,temp,0,data.length-1); l&yR-FJ7KY
} <)&ykcB
h '}5"m
private void mergeSort(int[] data, int[] temp, int l, int r) { :G`_IB\
int i, j, k; yA_d${n
int mid = (l + r) / 2; 0O:TKgb&C.
if (l == r) D"Xm9
(
return; R5FjJ>JE
if ((mid - l) >= THRESHOLD) mB,7YZv
mergeSort(data, temp, l, mid); X >**M
else {u1t.+
insertSort(data, l, mid - l + 1); *83+!DV|
if ((r - mid) > THRESHOLD) +`4|,K7'
mergeSort(data, temp, mid + 1, r); 1ERz:\
else +g;G*EP7*
insertSort(data, mid + 1, r - mid); =1,g#HS
r({(;
for (i = l; i <= mid; i++) { *kIJv?%_}
temp = data; C$hsR&
} o+vf
for (j = 1; j <= r - mid; j++) { YnMph0\Y^
temp[r - j + 1] = data[j + mid]; bw[!f4~
} >i.+v[)#
int a = temp[l]; (5I]um tge
int b = temp[r]; m1<B6*iG"
for (i = l, j = r, k = l; k <= r; k++) { );6zV_^!
if (a < b) { 3646.i[D
data[k] = temp[i++]; Y'Af I^K
a = temp; |#sP1w'l]
} else { Vr^wesT\Hx
data[k] = temp[j--]; N8vWwN[3
b = temp[j]; 9UwDa`^
} V-
vVb
} yJrPb"
} $W2g2[+
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/** <)}*S
* @param data a0n
F U
* @param l sv[)?1S
* @param i Oo0$n]*;W
*/ AV'>
private void insertSort(int[] data, int start, int len) { jy*wj7fj1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gg&jb=
} RsY<j& f
} AiyjrEa%
} QA%GK4F70
} |9Y9pked8
0Icyi#N
堆排序: mkWIJH
XI0O^[/n{
package org.rut.util.algorithm.support; U/ZbE?it>
mA4v 4z
import org.rut.util.algorithm.SortUtil; 4j | vzyc
lDH0bBmd0
/** h!Ka\By8#
* @author treeroot ve.4""\a
* @since 2006-2-2 +F/ '+
* @version 1.0 w&H
?; 1
*/ %'>. R
public class HeapSort implements SortUtil.Sort{ $a-~ozr`C
`KL`^UqR
/* (non-Javadoc) k&**f_b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )~5`A*Ku
*/ $DMeUA\av
public void sort(int[] data) { a"v D+r7Ol
MaxHeap h=new MaxHeap(); ;6]+/e7O
h.init(data); !~Z L
for(int i=0;i h.remove(); FCIT+8K
System.arraycopy(h.queue,1,data,0,data.length); n8iN/Y<%U
} 1jV^\x0
qV^H vZJ
private static class MaxHeap{ J0>Q+Y
XGUF9arN
void init(int[] data){ j{HxX
this.queue=new int[data.length+1]; :&a|8Wi[W
for(int i=0;i queue[++size]=data; RJWlG'i
fixUp(size); A$oYw(m#
} +(<CE#bb[
} sz)3
z
&
IDF9B
private int size=0; D~1nh%x_
;Y~;G7
private int[] queue; 2D-*Z=5^
0]WM:6 h
public int get() { 3v {GP>
return queue[1]; n,0}K+}
} 0zEn`rq&
-1< }_*
public void remove() { lP@9%L
SortUtil.swap(queue,1,size--); 9M7{.XR,
fixDown(1); g<,|Q5bK
} ZSbD4
|_
file://fixdown eag$i.^aS
private void fixDown(int k) { !WY@)qlf
int j; @z2RMEC~
while ((j = k << 1) <= size) { +/Z:L$C6
if (j < size %26amp;%26amp; queue[j] j++; Q0r_+0[7j
if (queue[k]>queue[j]) file://不用交换 <}UqtDF 0
break; NZD
X93
SortUtil.swap(queue,j,k); b'ew
Od=
k = j; xF ,J[Aj
} C ]#R7G
} ];< [Cln%
private void fixUp(int k) { E7*]t_p"
while (k > 1) { 51rM6
BT
int j = k >> 1; NfN#q:w1
if (queue[j]>queue[k]) $GYy[-.`
break; ]];7ozS)X
SortUtil.swap(queue,j,k); 31_5k./
k = j; r%o!P`
} #-kyZ
} ?G3OAx?<
;hKn$' '
} Z1>pOJm
PvA%c<z
} i%z}8GIt'
AQFx>:in
SortUtil: T? =jKLPC
mB!81%f%|
package org.rut.util.algorithm; iBc(
@EJ
u] oS91
import org.rut.util.algorithm.support.BubbleSort; gHm^@
import org.rut.util.algorithm.support.HeapSort; Mk^o*L{H
import org.rut.util.algorithm.support.ImprovedMergeSort; IP~g7`Y
import org.rut.util.algorithm.support.ImprovedQuickSort; Ak1f*HGl|
import org.rut.util.algorithm.support.InsertSort; )JZfC&,
import org.rut.util.algorithm.support.MergeSort; #S1)n[
import org.rut.util.algorithm.support.QuickSort; fCTjTlh
import org.rut.util.algorithm.support.SelectionSort; M"P$hb'F
import org.rut.util.algorithm.support.ShellSort; -Y+[`0$'
Oo#wPT;1^(
/** #7g~Um%p
* @author treeroot u{\`*dNx
* @since 2006-2-2 S4tdWA
* @version 1.0 zKI(yC
*/ ^beW*O!
public class SortUtil { xxedezNko
public final static int INSERT = 1; kDm=Cjxv
public final static int BUBBLE = 2; !>! l=Z
public final static int SELECTION = 3; Y[pGaiN:
public final static int SHELL = 4; #ocT4
public final static int QUICK = 5; pM4 j=F
public final static int IMPROVED_QUICK = 6; 2/h Mx-
public final static int MERGE = 7; "cti(0F-d
public final static int IMPROVED_MERGE = 8; LxG :?=O.
public final static int HEAP = 9; tnTr&o#
x-q er-
public static void sort(int[] data) { v|`)~"~
sort(data, IMPROVED_QUICK); ]P 2M
} yhTe*I=Gk
private static String[] name={ $YW z~^f
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &18} u~M
}; PAqziq.
B]kz3FF
private static Sort[] impl=new Sort[]{ m(&ZNZK
new InsertSort(), rb9x||
new BubbleSort(), ZM5[
o
m
new SelectionSort(), 7IFUsli]
new ShellSort(), &\5T`|~)!
new QuickSort(), =JEnK_@?K\
new ImprovedQuickSort(), 6 C
new MergeSort(), 3L#KHTM
new ImprovedMergeSort(), RJGf@am&
new HeapSort() ,. E:mm
}; 3J@#V '
IoA"e@~t
public static String toString(int algorithm){ ofN|%g /
return name[algorithm-1]; ##FN0|e&
} ! 5[?n3
E|Z Y2&J`4
public static void sort(int[] data, int algorithm) { eyy&JjVs
impl[algorithm-1].sort(data); _~6AUwM
} in%+)`'nH7
@P)GDB7A
public static interface Sort { #opFUX-
public void sort(int[] data); lZb1kq%9g
} .'SM|r$
{U&Mo97rzX
public static void swap(int[] data, int i, int j) { S6Kaw
int temp = data; %(n4`@
data = data[j]; c?[A
data[j] = temp; koaH31Q
} ZfMJU
} XD*$$`+#