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。 8U$(9X
插入排序: o8A1cb4<T
}+wvZq +c
package org.rut.util.algorithm.support; -ghmLMS%t
SJXA
import org.rut.util.algorithm.SortUtil; ^zs]cFN#%
/** u}:p@j}Zv
* @author treeroot %0<-5&GE
* @since 2006-2-2 "dN4EA&QJ
* @version 1.0 ys#V_ysb
*/ R3`h$`G
public class InsertSort implements SortUtil.Sort{ *=p[;V
(X?'}Ur
/* (non-Javadoc) >Y\$9W=t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1m5=Nu
*/ |'R^\M Q
public void sort(int[] data) { 6|O2i j-J
int temp; MMYV8;c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oz:J8l%
} #,4CeD|(D,
} zKP{A Sk
} GOII
B
)PNeJf|@
} q#n0!5Lv2
0OrT{jo
冒泡排序: M'"@l$[QM
JO^E x1c
package org.rut.util.algorithm.support; y_F{C 9KE
k m(Mv
import org.rut.util.algorithm.SortUtil; Fz 6&.f
W_sAk~uK/
/** |~y>R#u8pm
* @author treeroot IB
sQaxt.
* @since 2006-2-2 <:tD m
* @version 1.0 b# RTHe&X
*/ n:#gKR-J
public class BubbleSort implements SortUtil.Sort{ Q#2gjR r
ox2?d<dC6
/* (non-Javadoc) (i"@{[IP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WN+D}z]
*/ Jn/"(mM
public void sort(int[] data) { "")I1iO
g
int temp; bhq s%B!:
for(int i=0;i for(int j=data.length-1;j>i;j--){ "{&?t}rj+
if(data[j] SortUtil.swap(data,j,j-1); -S7y1 ) 7
} NdlJdq
} F*bmV>Qq
} s?JNc4q
} }z$_=v
[It
E+{U
} 1syI%I1
:k"VR,riF
选择排序: j%V95M%$
=WYI|3~Cz
package org.rut.util.algorithm.support; *u|bmt
?<l,a!V'6
import org.rut.util.algorithm.SortUtil; z'(][SB
# RG/B2
/** )0Lno|l
* @author treeroot ^Iz(V2
* @since 2006-2-2 V\ 7O)g
* @version 1.0 ;Rz+4<
*/ 9MmAoLm
public class SelectionSort implements SortUtil.Sort { *&m{)cTs
'|9fDzW"]
/* rerl-T<3
* (non-Javadoc) (q@DBb4
* <DM
/"^*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OjUZ-_J
*/ &f:"p*=a\
public void sort(int[] data) { '4L0=G:A<q
int temp; Rqk;!N
for (int i = 0; i < data.length; i++) { SS/9fT"[
int lowIndex = i; )Hp{8c
for (int j = data.length - 1; j > i; j--) { 6^Q Bol
if (data[j] < data[lowIndex]) { _"Bh
3 7
lowIndex = j; TCC([
} I`~ofq?r
} rTgCmr'&
SortUtil.swap(data,i,lowIndex); + \DGS
} CfSpwkg
} ) sh+cfTCb
JIGoF
} RkrZncBgV<
z&3in
Shell排序: Q}A*{9#|
\UD:9g"
package org.rut.util.algorithm.support; Yb~[XS |p
/hojm6MM
import org.rut.util.algorithm.SortUtil; >sUavvJ~x
+~E;x1&'
/** p\7(`0?8VN
* @author treeroot w=]bj0<A=
* @since 2006-2-2 S:*.,zC
* @version 1.0 ?dJ[?<aG
*/ 6zJ<27
public class ShellSort implements SortUtil.Sort{ y" (-O%Pe
>AbgJ*X.
/* (non-Javadoc) @Yv.HhO9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7({"dW
*/ ;{zgp
public void sort(int[] data) { O e-FI+7
for(int i=data.length/2;i>2;i/=2){ 7B|ddi7Q>
for(int j=0;j insertSort(data,j,i); %`kO\q_
} 7V^\fh5~
} E&}@P0^
insertSort(data,0,1); VS W:h
} UX?EOrfJ
'T8(md299
/** D9cpw0{nc
* @param data H\zV/1~Y
* @param j .%.bIT
* @param i V*uoGWL]+
*/ l;N?*2zm[
private void insertSort(int[] data, int start, int inc) { )&Bf%1>
int temp; N,iYUM?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cVx#dDdA
} pCE,l'Xa
} &.>
2@
} aSKLSl't`
0gI^GJN%Y!
} }67lL~L
0 e}N{,&Y
快速排序: EH*Lw
c
d3$*z)12`
package org.rut.util.algorithm.support; {z4v_[-2CF
yo#aX^v~y
import org.rut.util.algorithm.SortUtil; XIg GE)n
0Y%u[i/
/** r34q9NFT5
* @author treeroot )2Ru}
-H
* @since 2006-2-2 N^ )\+*tf1
* @version 1.0 d)_fI*:f
*/ m0: IFE($
public class QuickSort implements SortUtil.Sort{ 0/1Ay{ns
YA";&|V
/* (non-Javadoc) KA=cIm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Zj2*e{Z9U
*/ :sf(=Y.qA
public void sort(int[] data) { p~n62(
quickSort(data,0,data.length-1); W?`%it5
} w^_[(9
`
private void quickSort(int[] data,int i,int j){ [VD)DO5
int pivotIndex=(i+j)/2; {Qe7/ln!
file://swap V Z#@7t
SortUtil.swap(data,pivotIndex,j); %Sgdhgk1
tX<.
Ud
int k=partition(data,i-1,j,data[j]); 2MV!@rx
SortUtil.swap(data,k,j); jkzC^aG
if((k-i)>1) quickSort(data,i,k-1); l7+[Zn/v *
if((j-k)>1) quickSort(data,k+1,j); Uz;z
Wfw6(L
} &!kD81?Mm
/** N"tEXb/,
* @param data 3gUGfedi
* @param i BIBBp=+
* @param j mbij& 0
* @return sQ4~oZZ
*/ ^an3&
private int partition(int[] data, int l, int r,int pivot) { Z=L~W,0'
do{ cZ<@1I5QK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TQor-Cymz
SortUtil.swap(data,l,r); @@?P\jv~
} I6q]bQ="
while(l SortUtil.swap(data,l,r); <~rf;2LZ
return l; 9d\B*OU
} ,KfBG<3
L. %N
} I6jDRC0<
_o'3v=5T
改进后的快速排序: yY3Mv/R
uT#MVv~ .
package org.rut.util.algorithm.support; b?=>)':f
A9?h*/$
import org.rut.util.algorithm.SortUtil; RPXkf71iM
ggy 7p44
/** |JR;E$
* @author treeroot f&n6;N
* @since 2006-2-2 p^E}%0#
* @version 1.0 -F]0Py8(
*/ na%DF@Rt#
public class ImprovedQuickSort implements SortUtil.Sort { YFGQPg
N?RJuDW
private static int MAX_STACK_SIZE=4096; snl$v
private static int THRESHOLD=10; ]tu:V,q
/* (non-Javadoc) S~Z`?qHWh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) miq"3
*/ ';CL;A ;
public void sort(int[] data) { 2E*k@
int[] stack=new int[MAX_STACK_SIZE]; 9rCvnP=
`H^?jX>7
int top=-1; Y!+q3`-%T
int pivot; `X =2Ff
int pivotIndex,l,r; ;)SWUXa;{
x'uxSeH$
stack[++top]=0; [h3y8O
stack[++top]=data.length-1; r
N.<S[
PXH"%vVF
while(top>0){ MV~-']2u
int j=stack[top--]; :'t+*{ff
int i=stack[top--]; W{{{c2 .
nJ ZQRRa:C
pivotIndex=(i+j)/2; ?eU=xO
pivot=data[pivotIndex]; =$^<@-;
LHS^[}x^1
SortUtil.swap(data,pivotIndex,j); 6{qI
bM9:h
file://partition ?puZqVu5
l=i-1; +pq/:h
r=j; 2f=7`1RCD
do{ -%h0`hOG{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 60A
E~
SortUtil.swap(data,l,r); 1\~-No
} E2
5:eEXa
while(l SortUtil.swap(data,l,r); gLH#UwfJ
SortUtil.swap(data,l,j); On^jHqLaE
ckZZ)lW`*
if((l-i)>THRESHOLD){ r2Wx31j{
stack[++top]=i; pFUW7jE
stack[++top]=l-1; mHnHB.OL
} )Q!3p={S*
if((j-l)>THRESHOLD){ 4ZRE3^y\"
stack[++top]=l+1; .&Vyo<9Ck
stack[++top]=j; o
C5}[cYD`
} X`,]@c%C`
i;yr=S,a0/
} "(U%Vg|)
file://new InsertSort().sort(data); YTtuR`
insertSort(data); `2j \(N,
} s[ CnJZ\q
/** L&i _
* @param data XHN`f#(w
*/ a9OJC4\
private void insertSort(int[] data) { 9Xr @ll
int temp; d+6 by,'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o`!7~n
} =>PBdW
} ][b2Q>
} S b9In_*
0
$p}
/&
} s`bC?wr5h
y[}O(
归并排序: 8@S5P$b};
w'Kc#2
package org.rut.util.algorithm.support; 4sVr]p`
\n@S.Y?P
import org.rut.util.algorithm.SortUtil; l<](8oc.
w
f>u{e~Q,
/** Qoj}]jve
* @author treeroot *L%i-Wg"
* @since 2006-2-2 @;-6qZ
* @version 1.0 0P5!fXs*
*/ t*fG;YOg
public class MergeSort implements SortUtil.Sort{
`q ;79t
^GXy:S$
/* (non-Javadoc) -V'`;zE6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u%^Lu.l_c
*/ {(DD~~)D
public void sort(int[] data) { R|Oy/RGY$
int[] temp=new int[data.length]; fs]9H K/@\
mergeSort(data,temp,0,data.length-1); )8c`o
} -jZP&8dPH
g5EdW=Dt,
private void mergeSort(int[] data,int[] temp,int l,int r){ ]~,V(K
int mid=(l+r)/2; dBV^Khf J
if(l==r) return ; mGQgy[gX
mergeSort(data,temp,l,mid); Oc;/'d2
mergeSort(data,temp,mid+1,r); QK5y%bTSA
for(int i=l;i<=r;i++){ XA[GF6W,Y
temp=data; /!o(Y8e>x
} imx/hz!
int i1=l; u_aln[oIv
int i2=mid+1; fwy-M:
for(int cur=l;cur<=r;cur++){ 8ycmvpJ
if(i1==mid+1) )shzJ9G
data[cur]=temp[i2++]; Fr%LV#Q
else if(i2>r) &`a$n2ycy
data[cur]=temp[i1++]; 4>4*4!KR}
else if(temp[i1] data[cur]=temp[i1++]; v-85`h
else ILUA'T=B0
data[cur]=temp[i2++]; dqMR<Nl&
} q8:Z.<%8
} 9T47U; _)
4#5w^
} n9;+RhxA
W{OlJRX8
改进后的归并排序: {IeW~S'&
.+G),P)
package org.rut.util.algorithm.support; U*ZP>Vv
t)o #!)|
import org.rut.util.algorithm.SortUtil; (/&IBd-
JM{S49Lx
/** *G^n<p$"
* @author treeroot I/bED~Z:a
* @since 2006-2-2 s,TKC67.%+
* @version 1.0 5/Ng!bW
*/ PXGS5,
public class ImprovedMergeSort implements SortUtil.Sort { ;lST@>
V1KWi^
private static final int THRESHOLD = 10; "(}xIsy
%3e}YQe)
/* iTU8WWY<
* (non-Javadoc) ^4Ra$<
* 'sJ=h0d_[V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P>=~\v nN#
*/ SGW2'
public void sort(int[] data) { J/j1Yf'9
int[] temp=new int[data.length]; v]g/
5qI&
mergeSort(data,temp,0,data.length-1); m",wjoZe*
} xm>RLx}9
rE"`q1b#
private void mergeSort(int[] data, int[] temp, int l, int r) { . m_y5J
int i, j, k; cA"',N8!5
int mid = (l + r) / 2; TX]4Y953D
if (l == r) 8WU
UE=p
return; n.C.th
>Y1
if ((mid - l) >= THRESHOLD) zIWw055W
mergeSort(data, temp, l, mid); 1)u
3
else lhTjG,U=
insertSort(data, l, mid - l + 1); 22|eiW/a
if ((r - mid) > THRESHOLD) ~.M{n&NM
mergeSort(data, temp, mid + 1, r); ~$>l@> xX
else nBL7LocvR
insertSort(data, mid + 1, r - mid); k,M%/AXd
o|8
5<~`
for (i = l; i <= mid; i++) { KzZ!
CB\
temp = data; o)'T#uK
} xA]CtB*o7
for (j = 1; j <= r - mid; j++) { (7x5
temp[r - j + 1] = data[j + mid]; ^jb55X}
} oK@!yYv
int a = temp[l]; $78fR8|r-
int b = temp[r]; ys:1%D,,_
for (i = l, j = r, k = l; k <= r; k++) { 9@Yk8
if (a < b) { Mjq1qEi"B
data[k] = temp[i++]; QJp
_>K
a = temp; Kxz<f>`b/
} else { 6
k+FTDL
data[k] = temp[j--]; CJk$o K{Q
b = temp[j]; O>xGH0H
} .&.j?kb
} E\#hcvP
} 4H8vB^
A D=@
/** /j./
* @param data {gluK#Qm
* @param l T5NO}bz
* @param i Z5;1ySn{
*/ r#*kx# "
private void insertSort(int[] data, int start, int len) { /ZZo`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,Cj1S7GFR
} %TdZ_
} MVz=:2)J2
} M hNzmI&`
} z`((l#(
,K .P,z~*
堆排序: V(1Ldl'a
DCM,|FE
package org.rut.util.algorithm.support; vL@N21u
Hv(0<k6oH
import org.rut.util.algorithm.SortUtil; [Rw0']i`4
:\L{S
/** 5j1}?0v_
* @author treeroot wxVf6`
* @since 2006-2-2 4.7OX&L'G
* @version 1.0 mf6?8!O}>
*/ Ji4c8*&Jpc
public class HeapSort implements SortUtil.Sort{ X|t?{.p
jFpXTy[>
/* (non-Javadoc) [c]X)
@#S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mZ3i#a4
*/ 1.!rq,+>1
public void sort(int[] data) { [>::@[
MaxHeap h=new MaxHeap(); `%p}.X
h.init(data); F.ryeOJ
for(int i=0;i h.remove(); k1i*1Tc
System.arraycopy(h.queue,1,data,0,data.length); Bx0^?>
} Kf2*|ZHj
E.Xfb"]
private static class MaxHeap{ bVSa}&*kM
E8J`7sa
void init(int[] data){ ViQxOUE
this.queue=new int[data.length+1]; q PuxYU
for(int i=0;i queue[++size]=data; ]Gm,sp.x
fixUp(size); YFOSv]w
} ,Y=r]
fk
} , .uu/qV}w
%YG ~ql
private int size=0; _$PZID
]S<eO6z
private int[] queue; wQWokpP;T7
4_3Jpz*
public int get() { v>YdPQky
return queue[1]; {\jh?P|
} -q|K\>tgU
} *|_P
public void remove() { BusD}9QqB
SortUtil.swap(queue,1,size--); =HmV0
fixDown(1); gN$.2+:
} >Jt,TMMlt
file://fixdown 6|wiZw
private void fixDown(int k) { /1ooOq]
int j; z8{ kwz
while ((j = k << 1) <= size) { trnjOm
if (j < size %26amp;%26amp; queue[j] j++; 8<t6_* f
if (queue[k]>queue[j]) file://不用交换 Pe8WBr;`
break; z kQV$n{
SortUtil.swap(queue,j,k); R}c,ahd
k = j; $UavM|
} _O2},9L n
} =($RT
private void fixUp(int k) { @'j=oTT
while (k > 1) { ``j..v,
int j = k >> 1; D% }?l
if (queue[j]>queue[k]) s$css{(ek
break; ,@jRe&6
SortUtil.swap(queue,j,k); KlGPuGL
k = j; j9u/R01d
} _7#Ng@#\
} ]3wg-p+
sufidi
} _"SE^ _&