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。 h?ZxS
插入排序: #iAEcC0k5
Wf>scl`s
package org.rut.util.algorithm.support; h$~\to$C
TEi~X2u
import org.rut.util.algorithm.SortUtil; B
M$+r(#t
/** `t~Zkb4>
* @author treeroot J)leRR&
* @since 2006-2-2 ',P E25Z
* @version 1.0 &?gvW//L2
*/ 9WhZ=
Xk
public class InsertSort implements SortUtil.Sort{ ]7yr.4?a
p2:>m\
/* (non-Javadoc) BR [3i}Ud
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c})f&Z@<
*/ e4/Y/:vFO
public void sort(int[] data) { 5T4!'4n
int temp; >|@i8?|E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 26Jb{o9Z<
} _]# ^2S
} .#[==
} uWE
:3
\ tx4bV#
} 3/q)%Z^=
:AM5EO
冒泡排序:
BHa'`lCb
V O=
o)H\
package org.rut.util.algorithm.support; YXr"
ht1d[
import org.rut.util.algorithm.SortUtil; U4*Q;A#
c$skLz
/** e=m=IVY#W
* @author treeroot 1$#{om9
* @since 2006-2-2 t/TWLhx/
* @version 1.0 A\v(!yg
*/ @ = M:RA
public class BubbleSort implements SortUtil.Sort{ ,_(AiQK
w( ^
/* (non-Javadoc) efu'PfZ`&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
nW*D
*/ E 'O[E=
public void sort(int[] data) { nF!6
int temp; `oq][|
for(int i=0;i for(int j=data.length-1;j>i;j--){
~!& "b1
if(data[j] SortUtil.swap(data,j,j-1); }[gk9uM_7
} ecRY,MN
} Ghb Jty`
} Z>si%Npm\
} O<o>/HH$
~d072qUos
} BrO" _
Dxlpo!
?#
选择排序: gx',~
j aEUz5
package org.rut.util.algorithm.support; TC+L\7
R]! [h
import org.rut.util.algorithm.SortUtil; -)p
S\$GC
hmQ;!9
/** 9_
* @author treeroot +xc1cki_{
* @since 2006-2-2 9$[PAjwk
* @version 1.0 NM{/rvM
*/ =W_Pph
public class SelectionSort implements SortUtil.Sort { k:qS'
.*(xkJI3
/* 4Lb!Au|Y
* (non-Javadoc) ~0 Ifg_G
* GWvw<`4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "A]Xe[oS
*/ %qYiE!%&
public void sort(int[] data) { -E(0}\
int temp; zv8AvNDK
for (int i = 0; i < data.length; i++) { Sd |=*X
int lowIndex = i; %A^V@0K3
for (int j = data.length - 1; j > i; j--) { ac%6eW0#
if (data[j] < data[lowIndex]) { 7B)m/%>3s
lowIndex = j; 1R+/T
} fZ5zsm'N
} 8h%oJ4da
SortUtil.swap(data,i,lowIndex); W Y]
} ~stJO]) a
} $,)PO
Z
NrK.DY4
} U7do,jCoa
L]kd.JJvy
Shell排序: r&/M')}?Lw
9{KL^O?g
package org.rut.util.algorithm.support; R0A|}Ee*
rd:WF(]
import org.rut.util.algorithm.SortUtil; ^kO+NH40
F!_8?=|
/** ^P}jn`4
* @author treeroot d^(7\lw|
* @since 2006-2-2 Oe~x,=X)
* @version 1.0 ?-Zl(uX
*/ J^V}%N".
public class ShellSort implements SortUtil.Sort{ lPyY
5w+KIHhN|
/* (non-Javadoc) r&y0`M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @/,:".
SM
*/ {KGEv%
public void sort(int[] data) { tSVWO]<
for(int i=data.length/2;i>2;i/=2){ Q_r}cL/A
for(int j=0;j insertSort(data,j,i); H _0F:e
} >2t.7UhDI
} NxW
Dw
insertSort(data,0,1); }Be;YIhG
} h0O t>e"
R0g^0K.
/** q)j_QbW)
* @param data YT`,f*t
* @param j !*1$j7`tP
* @param i .C*mDi)wZ
*/ %;eD.If}
private void insertSort(int[] data, int start, int inc) { -^aJ}[uaI
int temp; MO>9A,&f
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9$?Sts}6&
} JyO2P
} )UCc!
} 1PB"1.wnd
dM=45$\q
} J6I:UML
jP{&U&!i
快速排序: yiw4<]{IX
lsaA
package org.rut.util.algorithm.support; abD@0zr
;aN_!!
r
import org.rut.util.algorithm.SortUtil; 7 'q *(v
QdrZi.qKH
/** g7"2}|qxo
* @author treeroot nZ'-3
* @since 2006-2-2 ?XbM
* @version 1.0 `FGYc
*/ s(Bcw`'#
public class QuickSort implements SortUtil.Sort{ vc0LV'lmg
uc>":V
/* (non-Javadoc) Uv m:`e~?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \i'Z(1
*/ R*=88ds
public void sort(int[] data) { QR2S67-
quickSort(data,0,data.length-1); F)Iz:
} @C|nc&E2s
private void quickSort(int[] data,int i,int j){ mCyn:+
int pivotIndex=(i+j)/2; D3B]
file://swap J= [D'h
SortUtil.swap(data,pivotIndex,j); yAiO._U
kV+%(Gl8
int k=partition(data,i-1,j,data[j]); c'.XC}
SortUtil.swap(data,k,j); 2
EWXr+IU.
if((k-i)>1) quickSort(data,i,k-1); bp!Jjct
if((j-k)>1) quickSort(data,k+1,j); Y}]-o9Rl
iInWw"VbKe
} W cGg
/** 'u:-~nSX)
* @param data |A/H*J,
* @param i eaC%&k
* @param j #;yxn.</
* @return K9{RU4<
*/ oY4^CGk=
private int partition(int[] data, int l, int r,int pivot) { )bWopc
do{ k8?G%/TD
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z]e`bfNnI
SortUtil.swap(data,l,r); +Bf?3 5LP
} !:PiQ19
'u
while(l SortUtil.swap(data,l,r); vc :%
return l; `a%MD>R_Lg
} g#MLA5%=u
Gp{,v
} p$t|eu
;I&XG
改进后的快速排序: j4<K0-?
Xhq7)/jp
package org.rut.util.algorithm.support; NS65F7<&
P(3k1SM
import org.rut.util.algorithm.SortUtil; Z5E; FGPb
WfD fj
/** EV?U
!O
* @author treeroot T](}jQxj`
* @since 2006-2-2 g)5mr:\
* @version 1.0 \BuyJskE
*/ ?j0yT@ G
public class ImprovedQuickSort implements SortUtil.Sort { oOLey!uZw
/O5&)%N
private static int MAX_STACK_SIZE=4096; eP,bFc
private static int THRESHOLD=10; QtwQVOK
/* (non-Javadoc) Wqkb1~]#Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o{6q>Jm
*/ \{}dn,?Fv
public void sort(int[] data) { N+ak{3
int[] stack=new int[MAX_STACK_SIZE]; 0-uw3U<
X Z . T%g
int top=-1; _6Y+E"@zs
int pivot; lXg5UrW
int pivotIndex,l,r; 9vz\R-un
4-t^?T:qF
stack[++top]=0; 5f{P% x(
stack[++top]=data.length-1; +J|H~`
(Vr%4Z8
while(top>0){ +SR{FF
int j=stack[top--]; d=n@#|3
int i=stack[top--]; V"Z8-u
n m<?oI*\
pivotIndex=(i+j)/2; ~ ;LzTL
pivot=data[pivotIndex]; 'f!U[Qatg
.%s
U)$bH
SortUtil.swap(data,pivotIndex,j); ~ney~Pz_
x ZP*%yM
file://partition f4fBUZ^ A
l=i-1; f-G)pHm
r=j; #R{>@]x`
do{ 3*&
Y'/!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h~m,0nGO
SortUtil.swap(data,l,r); .07`nIs"
} ~N/r;omVc
while(l SortUtil.swap(data,l,r); *X(:vET
SortUtil.swap(data,l,j); ~W [I
mwo:+^v(
if((l-i)>THRESHOLD){ !(rAI
stack[++top]=i; QXZyiJX}
stack[++top]=l-1; `XhH{*Q"X
} qx'0(q2Ii(
if((j-l)>THRESHOLD){ "bIb?e2h9G
stack[++top]=l+1; X+C*+k,z
stack[++top]=j; a8f#q]TyQ
} %\v8FCb
?0_<u4
} VD~5]TQ
file://new InsertSort().sort(data); N^dQX,j
insertSort(data); 54CJ6"q
} +bS\iw +
/** V2ih/mh
* @param data pY`$k#5
*/ ts!tv6@
private void insertSort(int[] data) { G;3%k.{
int temp; 7-``J#9=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4kjfYf@A
} 1>OlBp
} E=N$JM
} @QQ%09*
g#=<;X2
} >I|8yqbfm
st;iGg
归并排序: b2OwLt9
b)<WC$"
package org.rut.util.algorithm.support; r*+~(83k
.`}TND~
import org.rut.util.algorithm.SortUtil; @"@|O>KJ
+Yc^w5 !(
/** ->rqr#
* @author treeroot {5~h
* @since 2006-2-2 F(yR\)!C
* @version 1.0 SO=gG 2E
*/
xgcxA:
public class MergeSort implements SortUtil.Sort{ Cgx:6TRS
k1<^Ept
/* (non-Javadoc) nwU],{(Hgr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Dn Zk3M,
*/ ZC N}iQu4
public void sort(int[] data) { [(heE
int[] temp=new int[data.length]; 1ysfpX{=
mergeSort(data,temp,0,data.length-1); -Cs( 3[
} nzC *mPX8
%):_
private void mergeSort(int[] data,int[] temp,int l,int r){ cu N9RG
int mid=(l+r)/2; Z*m^K%qJ
if(l==r) return ; A?H#bRAs
mergeSort(data,temp,l,mid); Hu"$)V
mergeSort(data,temp,mid+1,r); 8>9Mh!t}(I
for(int i=l;i<=r;i++){ Z)s
!p
temp=data; hzsQK_;S
} 2iG+Ek-?"
int i1=l; )X0=z1$
int i2=mid+1; uu.X>agg
for(int cur=l;cur<=r;cur++){ '4 *0Pw
if(i1==mid+1) _y~6b{T
data[cur]=temp[i2++]; L5bq\
else if(i2>r) SBreA-2
data[cur]=temp[i1++]; h mRmU{(Y
else if(temp[i1] data[cur]=temp[i1++]; x/DV> Nfn
else p^pd7)sBr
data[cur]=temp[i2++]; M0w Uis:`
} = LNU%0m
} e,JBz~CK*w
l+9RPJD/:
} ZAr6RRv ^
H~Uf2A)C
改进后的归并排序: Sb[>R(0:
+MX~1RU+
package org.rut.util.algorithm.support; zR<{z
)#m{"rk[x,
import org.rut.util.algorithm.SortUtil; I?'*vAW<
8\rca:cF
/** #yochxF_
* @author treeroot ,D;8~llM
* @since 2006-2-2 \}$|Uo$O
* @version 1.0 dPEDsG0$a
*/ 5p#0K@`n/
public class ImprovedMergeSort implements SortUtil.Sort { I{89chi
q`1tUd 4G
private static final int THRESHOLD = 10; #kv9$
8g0 #WV
/* 6TW<,SM
* (non-Javadoc) ]`$6=)_X
* IU8zidn&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :^]Po$fl
*/ $5i\D
rs
public void sort(int[] data) { ~^2w)-N
int[] temp=new int[data.length]; ,/?J!W@m
mergeSort(data,temp,0,data.length-1); oJTEN}fL
} Ak?9a_f
a fa\6]m
private void mergeSort(int[] data, int[] temp, int l, int r) { =FzmifTc
int i, j, k; 8xLQ"
l+"
int mid = (l + r) / 2; *|y'%y
if (l == r) ww{k_'RRJ
return; z:-{Y2F
if ((mid - l) >= THRESHOLD) Xex7Lr&
mergeSort(data, temp, l, mid); X%YZQc9
else CH4Nz'X2
insertSort(data, l, mid - l + 1); 6>WkisxG
if ((r - mid) > THRESHOLD) jWUrw
mergeSort(data, temp, mid + 1, r); 9K&$8aD
else ^UvL1+
insertSort(data, mid + 1, r - mid); 0XA\Ag\`G
!f/K:CK|
for (i = l; i <= mid; i++) {
vc: kY
temp = data; eQ'E`S_d
} u.2X"
for (j = 1; j <= r - mid; j++) { k{f1q>gd
temp[r - j + 1] = data[j + mid]; f!+d*9
} x<l 5wh
int a = temp[l]; WfO E I1
int b = temp[r]; z -?\b^
for (i = l, j = r, k = l; k <= r; k++) { ^VYR}1Mw
if (a < b) { cIO/8D#zU
data[k] = temp[i++]; }@bp v
a = temp; %g7j7$c
} else { 16Qu{K
data[k] = temp[j--]; bSIY|/d+
b = temp[j]; N6[Z*5efR
} 'gN[LERT
} tV=Qt[|@
} Aa9l-:R
| d*<4-:
/** $(62j0mS>
* @param data @{IX
do
* @param l <2(X?,N5BD
* @param i Xn"#Zy_
*/ #bd=G(o~6
private void insertSort(int[] data, int start, int len) { Jj]<SWh
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l3u [
} $~8gh>`]
} CZzt=9
} dU-:#QV6
} QHv]7&^rlj
qg j;E=7
堆排序: S8v,'Cc
^X#)'\T
package org.rut.util.algorithm.support; :30daKo
w8+phN(-M
import org.rut.util.algorithm.SortUtil; d*u3]&?x&f
%;wDB2k*
/** z/j*zU
`
* @author treeroot /*g0M2+OZo
* @since 2006-2-2 `V/kM0A5
* @version 1.0 %Ok#~>c
*/ 7 :\J2$P
public class HeapSort implements SortUtil.Sort{ pp|$y\ZzB
6U).vg<
/* (non-Javadoc) MZ)lNU l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R UCUEo63
*/ =?CIC%6m
public void sort(int[] data) { .P8m%$'N
MaxHeap h=new MaxHeap(); k'X"jon
h.init(data); Oh}52=
for(int i=0;i h.remove(); }G(#jOYk
System.arraycopy(h.queue,1,data,0,data.length); `$"{-
} un\o&0}
^d>m`*px
private static class MaxHeap{ $m)eO8S+
qW3XA$g|j'
void init(int[] data){ +^J&x>5
this.queue=new int[data.length+1]; `_D A!
for(int i=0;i queue[++size]=data; \HD:#a
fixUp(size); Uvk:
} "wVisL2+.
} )[99SM
2L<1]:I
private int size=0; ,wr5DQ
ZHRMW'Ne
private int[] queue; 3Q&@l49q
z>W?\[E<2
public int get() { #Hy9 ;Q
return queue[1]; f3;[ZS
} -R9{Ak
UnDX .W*2
public void remove() { ;qzn_W
SortUtil.swap(queue,1,size--); e9\_H=t+
fixDown(1); YPs9Pqkn
} :S`12*_g"
file://fixdown {_>XsB
private void fixDown(int k) { p>U= Jg
int j; 87pu\(,'
while ((j = k << 1) <= size) { 7iy 2V;}
if (j < size %26amp;%26amp; queue[j] j++; Us[F@
if (queue[k]>queue[j]) file://不用交换 _or_Vw!
break; g6gwNC:aF
SortUtil.swap(queue,j,k); {#t7lV'4
k = j; t.!?"kP"c
} c*w0Jz>@.7
} Nn0j}ZI)1
private void fixUp(int k) { }V/iU_)
while (k > 1) { ~Y1nU-
int j = k >> 1; a/CY@V-
if (queue[j]>queue[k]) rZAP3)dA
break; 9G1ZW=83
SortUtil.swap(queue,j,k); P(\x. d:
k = j; vqF=kB"P
} F.Bij8\
} }L`Z<h*H
&G-dxET]
} $;";i:H`
O*F= xG
} 'K23oQwDB
k/Urz*O
SortUtil: FrRUAoFO
A(XX2f!i
package org.rut.util.algorithm; }Oe4wEYN)
-g"Wi@Qr
import org.rut.util.algorithm.support.BubbleSort; B$q5/ L$}
import org.rut.util.algorithm.support.HeapSort; 1n)YCSA
import org.rut.util.algorithm.support.ImprovedMergeSort; Bi/E{k,
import org.rut.util.algorithm.support.ImprovedQuickSort; tHvP0RxM
import org.rut.util.algorithm.support.InsertSort; )*}?EI4.
import org.rut.util.algorithm.support.MergeSort; | @B|o-
import org.rut.util.algorithm.support.QuickSort; V2yX;u
import org.rut.util.algorithm.support.SelectionSort; G[d]t$f=
import org.rut.util.algorithm.support.ShellSort; T7Y+ WfYh
$|@-u0sv
/** V\c`O
* @author treeroot IUG}Q7w5
* @since 2006-2-2 X2 <fS~m
* @version 1.0 ;+3@S`2r
*/ /*6[Itm_h
public class SortUtil { L8pKVr
public final static int INSERT = 1; |*~SR.[`
public final static int BUBBLE = 2; (76tYt~I=
public final static int SELECTION = 3; nGDY::nUE
public final static int SHELL = 4; &`g^b^i
public final static int QUICK = 5; H-%
B<7
public final static int IMPROVED_QUICK = 6; WxJaE;`Ige
public final static int MERGE = 7; L 'e|D=y
public final static int IMPROVED_MERGE = 8; Nah\4-75&
public final static int HEAP = 9; r0<zy_d'
i"^ yy+
public static void sort(int[] data) { uesIkJ^Q[
sort(data, IMPROVED_QUICK); j3R}]F'C*
} f?QP(+M5.
private static String[] name={ Tkj
F/zv
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /mn'9=ks
}; p8iKZI]g
Q0XSQ Ol
private static Sort[] impl=new Sort[]{ xd`\Ai
new InsertSort(), 7<*g'6JG[
new BubbleSort(), |lIgvHgg
new SelectionSort(), NiVZ=wEp,
new ShellSort(), 5z.Y}
new QuickSort(), /RF&@NJE5
new ImprovedQuickSort(), yx<-M
new MergeSort(), Gg^gK*D
new ImprovedMergeSort(), pe!"!xJE
new HeapSort() B?d+^sz]
}; ;Yt'$D*CP
`@&WELFv{
public static String toString(int algorithm){ GCrsf
return name[algorithm-1]; C)cuy7<
} _]< Tv3]RK
<.
V*]g/;
public static void sort(int[] data, int algorithm) { ~T=a]V
impl[algorithm-1].sort(data); \O*W/9
+
} 7#PQ1UWl
(ul_bA+
public static interface Sort { %y+v0.aWH+
public void sort(int[] data); bc6|]kB:
} &'m&'wDt:
\XbCJJP
public static void swap(int[] data, int i, int j) { pWeD,!f
int temp = data; MZ^(BOe_
data = data[j]; ZQsVSz( 1
data[j] = temp; Bl+PJ
0
} m*14n_m'
} o#-^Lg&