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。 n#OB%@]<V
插入排序: ?m?::R H
r|Tcfk]%
package org.rut.util.algorithm.support; M1iS(x
)f<z%:I+Z
import org.rut.util.algorithm.SortUtil; m-"w0Rl1T
/** 3x'|]Ns
* @author treeroot "5wa91*
* @since 2006-2-2 *itUWpNhr
* @version 1.0 _t #k,;
*/ o$lM$E:
public class InsertSort implements SortUtil.Sort{ ` v@m-j6
Ge-vWf-RbB
/* (non-Javadoc) ?'{SX9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @7j AL -
*/ v<(
public void sort(int[] data) { "mvt>X
int temp; h|{]B,.Lh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DG:Z=LuJr
} [}0haTYc4
} Q| ?L*Pq2I
} 76h ,]xi
=mp;.k95
} zsyIV!(
#KexvP&*
冒泡排序: orMwAV
aH/
k Ua
package org.rut.util.algorithm.support; FSW_<%
X!dYdWw*m
import org.rut.util.algorithm.SortUtil; ;P%1j| 7
[;),\\u,d
/** PKg@[<g43
* @author treeroot RO/FF<f
* @since 2006-2-2 GH:jH]u!V
* @version 1.0 ]R f[y
*/ zL `iK"N`
public class BubbleSort implements SortUtil.Sort{
MC.)2B7
ofw3S|F6
/* (non-Javadoc) qm8B8&-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ::{Q1F
*/ 2?ez,*-[
public void sort(int[] data) { UIN<2F_
int temp; hAnPXiD
for(int i=0;i for(int j=data.length-1;j>i;j--){
>rKIG~P_
if(data[j] SortUtil.swap(data,j,j-1); !0L Wa"
} My[pr_xg
} ;LSANr&
} MPg)=LI
} c>:wd@w
ywm8N%]v
} Hp!-248 S
k],Q9
选择排序: rgtT~$S
=BAW[%1b
package org.rut.util.algorithm.support; 0e ~JMUb
Z!zF\<r
import org.rut.util.algorithm.SortUtil; 3/e.38m|
EPM-df!=
/** J({Xg?
* @author treeroot RF4vtQC=
* @since 2006-2-2 -23w2Qt
* @version 1.0 >T3-
*/ {~"/Y@&]R
public class SelectionSort implements SortUtil.Sort {
mt p+rr
]e>w}L(gV
/* !_D0vI;
* (non-Javadoc) 9YQb&
* ^{;oM^Q'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z<y I\1
*/ [KaAXv
.X
public void sort(int[] data) { P& -Qc
int temp; <~'"<HwtK
for (int i = 0; i < data.length; i++) { `FDiX7M
int lowIndex = i; '+!1Y o'G
for (int j = data.length - 1; j > i; j--) { suiS&$-E
if (data[j] < data[lowIndex]) { /dQl)tL
lowIndex = j; sF?TmBQ*
} udUyh%n
} pVw}g@<M
SortUtil.swap(data,i,lowIndex); )SRefW.v
} @oY~..d`
} L<-_1!wh
)<;Y-u.UW
} Fk*7;OuZl
a /l)qB#
Shell排序: {9;CNsd
>#~& -3
package org.rut.util.algorithm.support; _w(7u(Z
R0]1xGz
import org.rut.util.algorithm.SortUtil; (\hx` Yh=>
i8[t=6Rm@
/** 0gy/:T
* @author treeroot %D}kD6=
* @since 2006-2-2 |w1Bq
* @version 1.0 FR4QUk
*/ }`QUHIF
public class ShellSort implements SortUtil.Sort{ JG!mc7
Cc' 37~6~P
/* (non-Javadoc)
+wvWwie
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R_ ,U Mt
*/ Ug t.&IA
public void sort(int[] data) { K'Tm_"[u
for(int i=data.length/2;i>2;i/=2){ ," Wr"
for(int j=0;j insertSort(data,j,i); Z/;(fL
} >WQMqQ^t@
} Mxsa-?R;v
insertSort(data,0,1); k,E{C{^M
} EZy)A$|
\fyRsa)
/** l7259Ro~
* @param data ]&xk30
* @param j otl0JHt*+
* @param i _jI,)sr4ic
*/ AOWmzu{zw
private void insertSort(int[] data, int start, int inc) { |\<`Ib4j
int temp; v/0QOp
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j4qR(p(vC
} }=UHbU.n~!
} E$:*NSXj
} W*4-.*U8a
ox>^>wR*
} c~$)UND^
fc%xS7&
快速排序: uK#4(eY=W
gA5/,wDO
package org.rut.util.algorithm.support; ] =xE
7he,?T)vD
import org.rut.util.algorithm.SortUtil; V!ZC(
$L>@Ed<
/** }Qc@m9;bH
* @author treeroot be{H$9'
* @since 2006-2-2 3n1;G8Nf
* @version 1.0 "XKy#[d2
*/ m
)zUU
public class QuickSort implements SortUtil.Sort{ ^f
&XQQY
+EAsW(F1
/* (non-Javadoc) @ ZwvBH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =wHVsdNCN
*/ Zq|I,l0+E
public void sort(int[] data) { t#/YN.@r
quickSort(data,0,data.length-1); !t%j?\f
} VT%NO'0
private void quickSort(int[] data,int i,int j){ trA4R/
&
int pivotIndex=(i+j)/2; V>%rv'G8
file://swap V _/%b)*
SortUtil.swap(data,pivotIndex,j); dvx#q5f_S
}DEg-j,F
int k=partition(data,i-1,j,data[j]); B5VKs,g
SortUtil.swap(data,k,j); ygS;$2m%2
if((k-i)>1) quickSort(data,i,k-1); y$F'(b|)
if((j-k)>1) quickSort(data,k+1,j); AGO+p(6d=g
Ae^~Cz1qz
} Co_A/
/** gQelD6c
* @param data ?|C2*?hZ+
* @param i H8^(GUhyp
* @param j eRstD>r
* @return uk]$#TV*q>
*/ vnt%XU,,Y
private int partition(int[] data, int l, int r,int pivot) { 5 +YH.4R
do{ cLJ$M`e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nQtWvT
SortUtil.swap(data,l,r); R'`qKc
} z'U1bMg
while(l SortUtil.swap(data,l,r); "f2$w
return l; 9:[ 9v
} Lpz>>}
,GIyq)
} `?qF$g9u~
n;Q7X>-f8`
改进后的快速排序: g i-$ZFzB
4*#18<u5
package org.rut.util.algorithm.support; H8zK$!
\*y-g@-{W$
import org.rut.util.algorithm.SortUtil; V-2(?auZd
|t&>5HM
/** _LUhZlw
* @author treeroot \0I_<
* @since 2006-2-2 ,RI Gc US
* @version 1.0 VUGmi]qd
*/ I-)+bV
G
public class ImprovedQuickSort implements SortUtil.Sort { 4Zddw0|2
m@F`!qY~Y\
private static int MAX_STACK_SIZE=4096; ~&_z2|UXp
private static int THRESHOLD=10; T_
<@..C
/* (non-Javadoc) d-ZJL6-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @|m/djN5x
*/ oUr66a/[U
public void sort(int[] data) { -1_)LO&H
int[] stack=new int[MAX_STACK_SIZE]; $q{!5-e
_QE qk@ql
int top=-1; x7w4[QYw
int pivot; xY8$I6
int pivotIndex,l,r; Jbg/0|1
J26V nK
stack[++top]=0; A_ZY=jP
stack[++top]=data.length-1;
6f>{"'
9Cp-qA%t
while(top>0){ )5JFfp)#
int j=stack[top--]; |?xN\O^#}
int i=stack[top--]; EIAc@$4
M,,bf[p$
pivotIndex=(i+j)/2; SrJGTuXg
pivot=data[pivotIndex]; -%CP@dAk
Rz/gtEP
SortUtil.swap(data,pivotIndex,j); P [ck84F/
P{jbl!UD7
file://partition {.|CdqwY
l=i-1; I@~QV@U
r=j; v`x.)S1
do{ Tc:)-
z[o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qLG&WB
SortUtil.swap(data,l,r); 4G0m\[Du
} nYSiS}?S.
while(l SortUtil.swap(data,l,r); |O+H[;TB6
SortUtil.swap(data,l,j); 7#a-u<HF"
.bg~>T+<
if((l-i)>THRESHOLD){ \fdv]f
stack[++top]=i; EwT"uL*V;
stack[++top]=l-1; eA ?RK.e
} fu ,}1Mq#
if((j-l)>THRESHOLD){ qkY:3Ozw
stack[++top]=l+1; :#ik. D
stack[++top]=j; ~P,lz!he_
} ,HV(l+k {|
0<@KG8@hI;
} YnMvl
file://new InsertSort().sort(data); RJ&RTo
insertSort(data); lh7#t#
} ?4&e;83_#y
/** vWv"
* @param data rfJz8uF%
*/ $6 9&O
private void insertSort(int[] data) { ,V m
< rK
int temp; hH3RP{'=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {9pZ)tB
} L}b.ulkMD
} !hy-L_wL]
} zxl@(hd
UnV.~ u~
} ,PW'#U:
<2x^slx)?
归并排序: i$#;Kpb`^
O+]ZyHnB
package org.rut.util.algorithm.support; R|, g<
KYI/
import org.rut.util.algorithm.SortUtil; U_Ptqqt%
"m8^zg hL
/** %OCb:s
* @author treeroot j2[+ztG
* @since 2006-2-2 tw/dD +
* @version 1.0 /Iokf@5
*/ #q$HQ&k
public class MergeSort implements SortUtil.Sort{ ()?(I?II
n;_sG>N
/* (non-Javadoc) v{N`.~,^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u4?L 67x
*/ _ <V)-Y
public void sort(int[] data) { M
FMs[+2_o
int[] temp=new int[data.length]; "+nRGEs6
mergeSort(data,temp,0,data.length-1); P3=G1=47U
} Bm<`n;m
-d/
=5yxL
private void mergeSort(int[] data,int[] temp,int l,int r){ : *#- %0
int mid=(l+r)/2; 7xlkZF
if(l==r) return ; AV]2euyn
mergeSort(data,temp,l,mid); ? :%@vM
mergeSort(data,temp,mid+1,r); Of#u
for(int i=l;i<=r;i++){ J]'zIOQ
temp=data; b_taC^-l
} `/+>a8
int i1=l; /36:ms A
int i2=mid+1; Dx?,=~W9
for(int cur=l;cur<=r;cur++){ u&vf+6=9Dd
if(i1==mid+1) N>`Aw^ _@&
data[cur]=temp[i2++];
jB2[(
else if(i2>r) WpP}stam/
data[cur]=temp[i1++]; t=iIY`Md%
else if(temp[i1] data[cur]=temp[i1++]; s ll\g
else Nai2W<,
data[cur]=temp[i2++]; 5C]x!>kX
} ? OM!+O
} ADzhNfS
PC8Q"O
} q54]1TQ
cV6D<,)
改进后的归并排序: JH9J5%sp
kDioD
package org.rut.util.algorithm.support; +O{*M9B
wwZ ,;\
import org.rut.util.algorithm.SortUtil; C,r;VyW6BI
Ld~/u]K%V
/** d7upz]K9g
* @author treeroot TD0
B%
* @since 2006-2-2 8GUX{K
* @version 1.0 #;yZ
*/ r#a=@
public class ImprovedMergeSort implements SortUtil.Sort { x 9fip-
=:pJ
private static final int THRESHOLD = 10; F;0}x;:>
:@A9](gI
/* u.Tcg^ v
* (non-Javadoc) ]G< Vg5
* Q%mB|i|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jidwt$1l(
*/ j*TYoH1
public void sort(int[] data) { 6]%sFy2
int[] temp=new int[data.length]; ;&-k#PE]/H
mergeSort(data,temp,0,data.length-1); l u%}h7ng
} >{J(>B\
{v;&5! s
private void mergeSort(int[] data, int[] temp, int l, int r) { s
3f-7f<
int i, j, k; (tw)nF
int mid = (l + r) / 2; q0r>2c-d
if (l == r) 3r."j2$Hs0
return; g0Gf6o>2
if ((mid - l) >= THRESHOLD) e 5*hE
mergeSort(data, temp, l, mid); =\wxsL
else 0+ ;bh
{Eu
insertSort(data, l, mid - l + 1); E+g@M8D
if ((r - mid) > THRESHOLD) /Uy"M:|V1
mergeSort(data, temp, mid + 1, r); e:n<EnT
else OO*zhGD;[
insertSort(data, mid + 1, r - mid); fnX`Q[b4\A
={d>iB yq
for (i = l; i <= mid; i++) { A5R<p+t6
temp = data; ,-d0b0
} MUREiL9L|
for (j = 1; j <= r - mid; j++) { T)TfB(
temp[r - j + 1] = data[j + mid]; +&( Mgbna
} ^!ZC?h!rG
int a = temp[l]; >TnTnF WX
int b = temp[r]; 3|4|*6
for (i = l, j = r, k = l; k <= r; k++) { <vh/4
if (a < b) { e2t-4}
ww
data[k] = temp[i++]; ``Dq
a = temp; e .2ib?8
} else { T| V:$D'
data[k] = temp[j--]; A1D^a,
b = temp[j]; }v*G_}^
} y 4I6
} Raxrb=7
} ^*8G8'k;$
E2@65b$
/** Ba*,-i3ZK
* @param data luuX2Mx>o
* @param l /VS[pXXT|
* @param i (-xS?8x$
*/ QnXA*6DJ
private void insertSort(int[] data, int start, int len) { E^lvbLh'
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z
X(z;|l45
} BuWHX>H
} 9S7kUl{
} &7b|4a8B%
} v'qG26
^ZhG>L*
堆排序: ') gi%
v!P b`LCqK
package org.rut.util.algorithm.support; P 8>d6;o($
=aj/,Q]
import org.rut.util.algorithm.SortUtil; feNdMR7eM
pUq1|)g
/** 04'~ta(t
* @author treeroot O<"}|nbmQ[
* @since 2006-2-2 OQT;zqup
* @version 1.0 #u"k~La
*/ wX[8A/JPD
public class HeapSort implements SortUtil.Sort{ MHai%E
x2z;6)
/* (non-Javadoc) 6s\Kt3=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RIE5KCrGB
*/ &)vC;$vD`
public void sort(int[] data) { T ;vF(
MaxHeap h=new MaxHeap();
Nwt" \3
h.init(data); oiyzHx
for(int i=0;i h.remove(); x.zbD8l/9
System.arraycopy(h.queue,1,data,0,data.length); :
G`hm{
} \ZhfgE8{%
$m+sNEAa
private static class MaxHeap{ S_v'hlrrT
`|#Qx3n%
void init(int[] data){ ivz>dJ ?T
this.queue=new int[data.length+1]; 'd&0Js$^
for(int i=0;i queue[++size]=data; .E&z$N
fixUp(size); <