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。 #"7:NR^H^
插入排序: \V:
_Zs
\N"K^kR4
package org.rut.util.algorithm.support; rZpc"<U
YrZAy5\
import org.rut.util.algorithm.SortUtil; cMK6
/** o5Qlp5`:u
* @author treeroot )]qFI"B7
* @since 2006-2-2 M6DyOe<
* @version 1.0 G9VzVx#T#
*/ CqrmdWN
public class InsertSort implements SortUtil.Sort{ cRU.
h)A+5^:^
/* (non-Javadoc) A]=?fyPh{'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |ZRl.C/e
*/ {v]>sn;P1
public void sort(int[] data) { >O\-\L
int temp; 9=JU&/!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P<2yCovn`
} xsAF<:S\
} r-Dcc;+=Q
} 5l)p5Bb48c
ih~c(&n0
} (G$m}ng
4r5,kOFWb
冒泡排序: typ*.j[q
%o{vD&7\
package org.rut.util.algorithm.support; < W&~tVv
^OA}#k
NTW
import org.rut.util.algorithm.SortUtil; *xLMs(gg
zlFl{t
/** wlKL|N
* @author treeroot .!9]I'9M
* @since 2006-2-2 2'pxA:
* @version 1.0 0s<o5`v
*/ 9"V27"s
public class BubbleSort implements SortUtil.Sort{ 8E0Rg/DnT
KE5f`h
/* (non-Javadoc) da[l[b;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sDbALAp
+
*/ r0S7e3xb
public void sort(int[] data) { @H{$,\\
int temp; 0!(Ii@m=N
for(int i=0;i for(int j=data.length-1;j>i;j--){ =20Q!wcu
if(data[j] SortUtil.swap(data,j,j-1); +9h6{&yr1
} i
[j`'.fj
} $B$=,^)3
} XUSfOf(
} ;#Mq=Fr-SG
q5OW1%
} EG9S?
$
9:=a FP
选择排序: y>~KeUC
0tsll1
package org.rut.util.algorithm.support; W}.4$f>
4|:{apH
import org.rut.util.algorithm.SortUtil; VUNQ@{ST|1
'0o`<xW
/** SH`"o
* @author treeroot /pyKTZ|
* @since 2006-2-2 FAQ:0L$G
* @version 1.0
?T4%"0
*/ [Cr_2
public class SelectionSort implements SortUtil.Sort { YDQV,`S7
/?_{DMt
/* wT.V3G
* (non-Javadoc) &`@Jy|N\
* X2Lhb{ZHE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }]n&" =Zk-
*/ {{<o1{_H
public void sort(int[] data) { !P:hf/l[B
int temp; <MfB;M
for (int i = 0; i < data.length; i++) { z5{I3 Y!1
int lowIndex = i; <o]tW4\(R
for (int j = data.length - 1; j > i; j--) { BtqJkdK!;1
if (data[j] < data[lowIndex]) { ;V%lFP3#
lowIndex = j; f}+G;a9Nj
} sxsM%Gb?H
} cF/FretoO
SortUtil.swap(data,i,lowIndex); ^|sQkufo
} 'Y&yt"cs
} OI`Lb\8pP
@9c^{x\4
} Ok* :;G@
PGw"\-F
Shell排序: WV&BZ:H
H-rf?R2
package org.rut.util.algorithm.support; *2>%>qu
Stp??
import org.rut.util.algorithm.SortUtil; +h9CcBd
Ak9W8Z}
/** 4ErDGYg}
* @author treeroot }e@j(*8
* @since 2006-2-2 _6(zG.Fg
* @version 1.0 {+r?g J
*/ \|T0@V
public class ShellSort implements SortUtil.Sort{
-l,ib=ne
,-{j.
/* (non-Javadoc) s!+?)bB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lI5{]?'
*/ J#X 7Ss
public void sort(int[] data) { 3~ZtAgih%
for(int i=data.length/2;i>2;i/=2){ :X$&gsT/,
for(int j=0;j insertSort(data,j,i); Az)P&*2:'`
} ;N/c 5+
} gVI*`$
insertSort(data,0,1); -m+2l`DLy
} ^#Wf
rg P$\xn-
/** h]zx7zt-
* @param data \Xkx`C
* @param j i3Ffk+ |b
* @param i [&zP$i&
*/ i"-#1vy=
private void insertSort(int[] data, int start, int inc) { VK NCK
int temp; .:lzT"QXI
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D<rjxP
} ]&9f:5',
} |]I?^:I
} Ik}*7D
{?j|]j
} F\]rxl4(L
;nC+Kz:
快速排序: J%[K;WjrZJ
xpS#l"dr
package org.rut.util.algorithm.support; c/hml4
r]]Ke_s!
import org.rut.util.algorithm.SortUtil; ~q1s4^J
@L~y%#
/** '17=1\Ss6;
* @author treeroot hwXp=not(
* @since 2006-2-2 R
UX
* @version 1.0 Xajjzl\b
*/ >"Hj=?
public class QuickSort implements SortUtil.Sort{ nTHP~]
)*_YeT&w.
/* (non-Javadoc) D'2O#Rj4q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vl'=92t
*/ 0<s)xaN>Y
public void sort(int[] data) { [t6)M~&e:_
quickSort(data,0,data.length-1); wo_FM
`@
} n;q7?KW8
private void quickSort(int[] data,int i,int j){ o%|1D'f^
int pivotIndex=(i+j)/2; `V?{
file://swap >Ek`PVPD
SortUtil.swap(data,pivotIndex,j); ^%<v| Y(X
[UI
bO@e
int k=partition(data,i-1,j,data[j]); leD?yyjw7
SortUtil.swap(data,k,j); 9j,zaGD0
if((k-i)>1) quickSort(data,i,k-1); 7"QcvV@p
if((j-k)>1) quickSort(data,k+1,j); +(P;4ZOmB
:7`,dyIqT
} p,4z;.s$
/** A] F K\
* @param data 2dq{n.cgs
* @param i d+IPa<N
* @param j (Q'XjN\#
* @return ;wN.RPE_^
*/ +g.WO5A
private int partition(int[] data, int l, int r,int pivot) { '@W72ML.
do{ U}5uy9A
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -,i1T(p1
SortUtil.swap(data,l,r); ;0BCM(>Wo
} 9u)h$VC
while(l SortUtil.swap(data,l,r); Og&2,`Jb
return l; OIoAqt
} W!Xgse3
|4'E&(BU-
} 6#K_Rg>.
.:;i*
改进后的快速排序: kt S0
LD6fi
package org.rut.util.algorithm.support; U .rH,`
T[7DJNdG6
import org.rut.util.algorithm.SortUtil; Jz-f1mhQV
59ivL6=3
/** BPPhVE
* @author treeroot %\^x3wP&o\
* @since 2006-2-2 I#,,h4C
* @version 1.0 Jrffb=+b
*/ dB/Epc&
public class ImprovedQuickSort implements SortUtil.Sort { U{R*WB b
y=&)sq
private static int MAX_STACK_SIZE=4096; j[z\p~^
private static int THRESHOLD=10; <D 5QlAN
/* (non-Javadoc) 0P)c)x5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) te:VYP
*/ gz88$BT
public void sort(int[] data) { (&x[>):6?
int[] stack=new int[MAX_STACK_SIZE]; *;}! WDr
'}OrFN
int top=-1; ;WzT"yW)T
int pivot; `hfwZ*s
int pivotIndex,l,r; H,?MG
: i(h[0
stack[++top]=0; :Ert57@l
stack[++top]=data.length-1; ~f@;.
{<_}[} XY
while(top>0){ I{2e0
int j=stack[top--]; tz)L`g/J~
int i=stack[top--]; "2;UXX-H
`\qU.m0(j
pivotIndex=(i+j)/2; JhD8.@} b~
pivot=data[pivotIndex]; ' 1mygplW
HL)1{[|`
SortUtil.swap(data,pivotIndex,j); F{}z[0
2.x3^/
file://partition l9<+4rK2
l=i-1; )GR^V=o7,Y
r=j; m2V4nxw]Qp
do{ ZNx{7]=a
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Na`qA j}
SortUtil.swap(data,l,r); R<wb8iir
} c"QI`;D_c
while(l SortUtil.swap(data,l,r); MBg^U<t8
SortUtil.swap(data,l,j);
s$]I@;_
x:@e ID
if((l-i)>THRESHOLD){ 1'g?B`
stack[++top]=i; (V+(\<M
stack[++top]=l-1; w
S;(u[W
} Qr0GxGWU
if((j-l)>THRESHOLD){ qD9B[s8
stack[++top]=l+1; [2
Rp.?
stack[++top]=j; crmnh4-
} O
,DX%wk,
mtF&Z\ag
} 3Fr}8Dy
file://new InsertSort().sort(data); PffwNj/l
insertSort(data); Gis'IX(
} 4RzG3CJdS
/** 6?t5g4q*nn
* @param data E+Gea[c
*/ ).&$pXj
private void insertSort(int[] data) { P(Lwpa,S
int temp; NyGF57v[M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m4%m0"Z
} F:H76O` 8
} > Euput\
} qNvKlwR9;k
a'A0CQ
} 6)?TWr'K e
8pk5[=3Z
归并排序: 8m9G^s`[
IMrB!bor
package org.rut.util.algorithm.support; 'fgDe
0m@S+$v
import org.rut.util.algorithm.SortUtil; !X,S2-}"
,%:`Ll
t]$
/** -Pvt+I>
* @author treeroot {=(4
* @since 2006-2-2 q6,xsO,+
* @version 1.0 qItI):9U
*/ ,<[os
public class MergeSort implements SortUtil.Sort{ #VrT)po+
%ZxKN ;
/* (non-Javadoc) Dp'/uCW)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1k hwwoo
*/ _\1(7 ?0D
public void sort(int[] data) { x^;nfqn|
int[] temp=new int[data.length]; JD>!3>S)?
mergeSort(data,temp,0,data.length-1); {UhZ\qe
} +\E\&^ZQ
w"Z>F]YZ
private void mergeSort(int[] data,int[] temp,int l,int r){ Uligr_c?
int mid=(l+r)/2; lmd0Q(I
if(l==r) return ;
d,H%
mergeSort(data,temp,l,mid); \mycn/e
mergeSort(data,temp,mid+1,r); ]-q:Z4rb
for(int i=l;i<=r;i++){ Isi,Tl ^
temp=data; Z-~^)l o
} kP| !!N
int i1=l; a RV!0?fS
int i2=mid+1; |g9^]bT
for(int cur=l;cur<=r;cur++){ )/=J=xw2
if(i1==mid+1) Cz(Pj S
data[cur]=temp[i2++]; PJ_|=bn
else if(i2>r) Vs"M Cqi
data[cur]=temp[i1++]; P_Zo}.{
else if(temp[i1] data[cur]=temp[i1++]; h(zi$V
else X31k HK5F_
data[cur]=temp[i2++]; "y`?KY$[N
} x0#+yP
} %Wc-.ER
EXzY4D ^
} PK~okz4b
EYQ!ELuF
改进后的归并排序: K;Xn!:) V:
E6G^?k~q
package org.rut.util.algorithm.support; {7;TQ?/
:DZiDJ@
import org.rut.util.algorithm.SortUtil; Lf,gS*Tg?
68d @By
/** kj[[78
* @author treeroot {wm
`
* @since 2006-2-2 ZzE&?
* @version 1.0 [C&c;YNp
*/ I/(`<s p
public class ImprovedMergeSort implements SortUtil.Sort { [R~HhM
ZWFH5#=
private static final int THRESHOLD = 10; J d`NS3;*p
Z86[sQBg
/* n1LS*-@
* (non-Javadoc) u|Ai<2b$
* }%}eyLm(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MRa>@Jn??A
*/ /2z2a-!r
public void sort(int[] data) { E^qKkl
int[] temp=new int[data.length]; }Jc^p
mergeSort(data,temp,0,data.length-1); CUtk4;^y#
} II2oV}7?
V2bod=&Lc
private void mergeSort(int[] data, int[] temp, int l, int r) { :4A^~+J
int i, j, k; qR1ez-#K
int mid = (l + r) / 2; I7TMv.
if (l == r) W}e5 4-lu
return; x^
Wgo`v)
if ((mid - l) >= THRESHOLD) ,p2
Di
mergeSort(data, temp, l, mid); duM>(y
else ,5/gNg
insertSort(data, l, mid - l + 1); \gzNMI*
if ((r - mid) > THRESHOLD) H@6
mergeSort(data, temp, mid + 1, r); eD/?$@y
else EEaFi8
insertSort(data, mid + 1, r - mid); |GsLcUv6
Rw7Q[I5z%
for (i = l; i <= mid; i++) { 4ASc`w*0
temp = data; Gh< r_O~L3
} W[vak F
for (j = 1; j <= r - mid; j++) { ~vt8|OOo0
temp[r - j + 1] = data[j + mid]; C{,nDa?|
} d9^h
YS{
int a = temp[l]; CR_A{(
int b = temp[r]; 8<o(z'&y
for (i = l, j = r, k = l; k <= r; k++) { mT9TSW}
if (a < b) { R{WG>c
data[k] = temp[i++]; t
&ucqY
a = temp; ^yfT7050
} else { ](O!6_'d
data[k] = temp[j--]; D4S>Pkv
b = temp[j];
%++q+pa
} QM$?}>:
} @U9ov >E
} m/{rmtA4
w,P2_xk`
/** :8rqTBa`
* @param data 'tdjPdw
* @param l >Qi2;t~G
* @param i N_T;&wibO
*/ )S5Q5"j&=f
private void insertSort(int[] data, int start, int len) { U2h?l
`nP
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LsmC/+7r$1
} 0)nU[CY
} dtnAMa5$T
} Y`_6Ny="
} @Pa ;h
@1kA%LLK
堆排序: >Rr]e`3wG
'91Ak,cWB
package org.rut.util.algorithm.support; Bkcs4 x
:0]KIybt
import org.rut.util.algorithm.SortUtil; X2EC+<
&<~`?-c
/** BO1Mz=q
* @author treeroot 8J>s|MZ
* @since 2006-2-2 .<tb*6rX>
* @version 1.0 PB`94W
*/ 6.k2,C4dT<
public class HeapSort implements SortUtil.Sort{ f-3lJ?6
}?H |9OS
/* (non-Javadoc) YUc&X