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。 kKAK;JQ
插入排序: EzqYHY+_r
0M(\xO
package org.rut.util.algorithm.support; }&sF
\b
GV#"2{t
j
import org.rut.util.algorithm.SortUtil; 4]0|fi3}>
/** ; S7
%
* @author treeroot ^d Fdw\
* @since 2006-2-2 'qwFVP
* @version 1.0 a<7Ui;^@
*/ :\9E%/aAD
public class InsertSort implements SortUtil.Sort{ z40uY]Ck
Ic/D!J{Y
/* (non-Javadoc) 4CVtXi_Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }md[hi J
*/ $50A!h
public void sort(int[] data) { LPX@oh a
int temp; zY_BnJ^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }/q]:3M|
} Q
laz3X,P
} K n%[&
} pYIm43r H
'MH WNPG0
} f(!:_!m*
@T[}]e
冒泡排序: udVEOn$
Uu
~BErEC
package org.rut.util.algorithm.support; ua[ d
C1_':-4
import org.rut.util.algorithm.SortUtil; ^[6eo8Ck>
- ` F#MN
/** qE?*:$
* @author treeroot Bc3(xI'>J
* @since 2006-2-2 U;f~ Q6iu
* @version 1.0 }qU(G3
*/ 9nF;$HB
public class BubbleSort implements SortUtil.Sort{ #AHX{<
s<,[xkMB
/* (non-Javadoc) [)UL}vAO\q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V9\g?w
*/ ^-Ob($(\
public void sort(int[] data) { x&>zD0\
:\
int temp; # rnO=N8
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2VObj7F
if(data[j] SortUtil.swap(data,j,j-1); /NRdBN
} L-Qc[L
} K. [2uhB)
} Xm,w.|dx
} 1KwUp0%&
iV<4#aBg
} 1_$ybftS
_0^f
选择排序: %%`Q5I
/J{
e_a
package org.rut.util.algorithm.support; z Ic%>?w
j6x1JM
import org.rut.util.algorithm.SortUtil;
/6)6
Yzo_ZvL
/** &ru2&Sz
* @author treeroot 0
_4p>v:
* @since 2006-2-2 u.W}{-+kp
* @version 1.0 oAaUXkQE
*/ z+IHt(
public class SelectionSort implements SortUtil.Sort { w0W9N%f#=
NQb!?w
/* 4#D=+70'
* (non-Javadoc) YI[y/~!
* `-Yo$b;:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,au-g)IFZ
*/ P]V/<8o.53
public void sort(int[] data) { ^|Bpo(
int temp; um.s:vj$
for (int i = 0; i < data.length; i++) { jm~(OLg
int lowIndex = i; ;&="aD
for (int j = data.length - 1; j > i; j--) { $'m&RzZ
if (data[j] < data[lowIndex]) { Py?EA*(d#
lowIndex = j; Z?@1X`@
} )1de<# qM
} %A 4F?/E
SortUtil.swap(data,i,lowIndex); oEfy{54
} ^uZ!e+
} 9hoTxWpmy
s
Yp?V\Y"
} Hz A+Oi
+[W_Jz
Shell排序: ';T=kS<^_
bD*z"e
package org.rut.util.algorithm.support; aX`@WXK
K8>-%ns
import org.rut.util.algorithm.SortUtil; s+mNr3
t?bc$,S"\(
/** bBwMx{iNNz
* @author treeroot W=Y?_Oz
* @since 2006-2-2 (WoKrd.!
* @version 1.0 'VH%cz*
*/ gW0{s[}T
public class ShellSort implements SortUtil.Sort{ }Z^r<-N
MSef2|"P#
/* (non-Javadoc) '3n?1x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G5;N#^myJ
*/ NhP&sQO
public void sort(int[] data) { ry99R|/d1
for(int i=data.length/2;i>2;i/=2){ Y$tgz)
for(int j=0;j insertSort(data,j,i); IiX`l6L~W
} IdY\_@$ v
} C3m](%?
insertSort(data,0,1); &DUt`Dr w
} :Fvd?[
2!UNFv#=$
/** IUK!b2!`
* @param data fe,A\W&8
* @param j fi/[(RBG
* @param i 627xR$U~
*/ _b ~XBn
private void insertSort(int[] data, int start, int inc) { R78=im7
int temp;
*jAw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ue YBD]3'
} AdCi*="m
} zAr@vBfC%
} |?a 4Nl?
&s]wf
} YLEk
M
oH[4<K>
快速排序: kO1.27D
j|WuOZm\0
package org.rut.util.algorithm.support; e~wuoE:M3
z j[/~I
import org.rut.util.algorithm.SortUtil; d8Keyi8[
btQDG
/** <Z8I#IPl
* @author treeroot Q%x |
* @since 2006-2-2 _A8x{[$
* @version 1.0 dc ]+1
A
*/ E0g`
xf6c
public class QuickSort implements SortUtil.Sort{ 0cd`. ZF
w]BZgF.
/* (non-Javadoc) ;M<jQntqS{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sz5&P )X
*/ %*>ee[^L ,
public void sort(int[] data) { "zT#*>U
quickSort(data,0,data.length-1); K#O8P+n5[
} <>jut
private void quickSort(int[] data,int i,int j){ $m.e}`7SF!
int pivotIndex=(i+j)/2; _N.N?>
file://swap
>&1MD}
SortUtil.swap(data,pivotIndex,j); H*l2,0&W
Jgf73IX[
int k=partition(data,i-1,j,data[j]); ypoJ4EZ(
SortUtil.swap(data,k,j); dy4!
>zxF
if((k-i)>1) quickSort(data,i,k-1); t-xw=&!w
if((j-k)>1) quickSort(data,k+1,j); o6 FSSKM
^,Paih
2
} E(5'vr0
/** R'#[}s
* @param data *3S./C}
* @param i t)yWQV
* @param j 9~6FWBt
* @return g$qNK`y
*/ &x}a
private int partition(int[] data, int l, int r,int pivot) { g;bfi{8s_
do{ [V\0P,l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }CR@XD}[
SortUtil.swap(data,l,r); LuM[*_8
} RHV&m()Q
while(l SortUtil.swap(data,l,r); W9!EjXg
return l; =:T pH>f*
} kIHfLwh9N
^ Vl{IsY
} V!eq)L
D[.;-4"_
改进后的快速排序: E!d;ym
e 1W9Z $m
package org.rut.util.algorithm.support; >680}\S
J|DID+M
import org.rut.util.algorithm.SortUtil; hpftVEB
L-7?:
/** 0]tr&BLl*
* @author treeroot b%w?YR
* @since 2006-2-2 ;&|MNN^
* @version 1.0 .xRJ )9q
*/ jU1 ([(?"
public class ImprovedQuickSort implements SortUtil.Sort { U5uO|\+)
HPGMR4=ANS
private static int MAX_STACK_SIZE=4096; 9v=fE2`-
private static int THRESHOLD=10; CzP?J36W^
/* (non-Javadoc) oDY
$F%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;\P\0pI50
*/ ?a~59!u
public void sort(int[] data) { 3h:"-{MW.
int[] stack=new int[MAX_STACK_SIZE]; t'msgC6=>u
-)biSU,
int top=-1; dLV>FpA\
int pivot; Te%2(w,B
int pivotIndex,l,r; sdk%~RN0T
s-V5\Lip,
stack[++top]=0; RAw/Q$I
stack[++top]=data.length-1; *]<M%q!<6
D%L}vugxK
while(top>0){ lTl-<E;
int j=stack[top--]; "~
1:7{k
int i=stack[top--]; q*`1<9{H
A4Dj4n 0
pivotIndex=(i+j)/2; B@P +b*%
pivot=data[pivotIndex]; ^gP pmb<x
dso6ZRx
SortUtil.swap(data,pivotIndex,j); _J'V5]=4
W4
v/,g>
file://partition 4bV&U=
l=i-1; (/x%zmY;/U
r=j; Ce:2Tw
do{ oMM+af
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s&T"/4
SortUtil.swap(data,l,r); /oA=6N#j
} P?- #d\qi
while(l SortUtil.swap(data,l,r); Lye^G%{
SortUtil.swap(data,l,j); 2~yYwX
58S >B'
if((l-i)>THRESHOLD){ "
3ryp
A
stack[++top]=i; X~m*` UH
stack[++top]=l-1; ~
ZkSYW<
} ;5i~McH#
t
if((j-l)>THRESHOLD){ p6UPP|-S
stack[++top]=l+1; ii< /!B(
stack[++top]=j; ccUI\!TD{/
} qfRsp
rRI"
,C4gA(')K
} 9j[lr${A
file://new InsertSort().sort(data); ~353x%e'
insertSort(data); eSAB :L,K
} Bo)N<S_=^
/** ]@Gw$
* @param data ;|C[.0;kgv
*/ 6),U(e%
private void insertSort(int[] data) {
l,}^<P]
int temp; <B+xE?v4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m%?+;V
} %jS#DVxBR
} #YABbwH
} @ V_@r@A
M1>2Q[h7
} cJIA/HQe
dfU z{
归并排序: F<W`zQ46
am+'j5`Ys
package org.rut.util.algorithm.support; HB/q
v IzB
[{K
import org.rut.util.algorithm.SortUtil; Ym]Dlz,o
JDa=+\_
/** ;*~y4'{z
* @author treeroot W*S!}ZT`
* @since 2006-2-2 :)djHPP*
* @version 1.0 ('9LUFw\
*/ CrTGC%w{=
public class MergeSort implements SortUtil.Sort{ 834E
]2
49e~/YY
/* (non-Javadoc) r[u@[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vk^ /[eha
*/ l^LYSZg'R8
public void sort(int[] data) { uU|fCwQt
int[] temp=new int[data.length]; &EZq%Sd
mergeSort(data,temp,0,data.length-1); +"~~;J$
} \!]Zq#*kH
``Yw-|&:Ae
private void mergeSort(int[] data,int[] temp,int l,int r){ 8J5{}4s\f
int mid=(l+r)/2; CO)BF%?B
if(l==r) return ; h 8ND=(
mergeSort(data,temp,l,mid); sF+mfoMtG
mergeSort(data,temp,mid+1,r); SK>*tKY
for(int i=l;i<=r;i++){ .b3cn
temp=data; Q\!0V@$
} KX|7mr90K
int i1=l; qaj~q(j~C
int i2=mid+1; xn=/SIS
for(int cur=l;cur<=r;cur++){ qYwEPGa\
if(i1==mid+1) L#\!0YW/@
data[cur]=temp[i2++]; [r)Hm/_=|U
else if(i2>r) oD@~wcMIT0
data[cur]=temp[i1++]; C2Pw;iK_t
else if(temp[i1] data[cur]=temp[i1++]; Y NRorE
else szDd!(&pv
data[cur]=temp[i2++]; 3T<aGW1
} &4m\``//9
} 03{pxI
(|*CVI;
} ,[Bv\4Ah
'f?=ks<
改进后的归并排序: /W vgC)
jMH=lQ+8
package org.rut.util.algorithm.support; U6B-{l:W
zx(=ArCRr
import org.rut.util.algorithm.SortUtil; 3=)!9;uY
z-Ndv;:
/** @5C!`:f
* @author treeroot `L. kyL
* @since 2006-2-2 j3J\%7^i
* @version 1.0 >@mvb@4*
*/ R)<PCe`vf
public class ImprovedMergeSort implements SortUtil.Sort { ?FRuuAS
wB~5&:]jr
private static final int THRESHOLD = 10; ?JinX'z
Q)$RE{*-
/* "s6\l~+9l
* (non-Javadoc) =MsQ=:ZV
* P>i!f!o*I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BwpSw\\?@
*/ 5g-AB`6T
public void sort(int[] data) { {tN?)~ZQ
int[] temp=new int[data.length]; BSMM3jXb
mergeSort(data,temp,0,data.length-1); @C?.)#
} v{T%`WuPRf
&.ilku/
private void mergeSort(int[] data, int[] temp, int l, int r) { 4fq:W`9sN
int i, j, k; !I8m(axW
int mid = (l + r) / 2; <uYeev%
if (l == r) Y]33:c_;Mo
return; (:spA5
if ((mid - l) >= THRESHOLD) G 5T{*
mergeSort(data, temp, l, mid); /4!.G#DLQ
else [\rnJ
lE
insertSort(data, l, mid - l + 1); 3rUuRsXn
if ((r - mid) > THRESHOLD) [2 yxTK
mergeSort(data, temp, mid + 1, r); bh~"LQS1
else H E'1Wa0r
insertSort(data, mid + 1, r - mid); ,ezC}V0M
\a}_=O
for (i = l; i <= mid; i++) { q5UD!&W
temp = data; b)e';M
} ^s;xLGl]
for (j = 1; j <= r - mid; j++) { AB1.l
hR
temp[r - j + 1] = data[j + mid]; V(5=-8k
} G)S(a4
int a = temp[l]; cj5;XK
int b = temp[r]; =rB=! ;
for (i = l, j = r, k = l; k <= r; k++) { JR_s-&