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。 3hzKd_
插入排序: ]$WwPDZ
jUX0sRDk
package org.rut.util.algorithm.support; w`K=J!5y2g
q6>%1~?
import org.rut.util.algorithm.SortUtil; eN]9=Y~-K
/** f>_' ]eM%
* @author treeroot 5@@ilvwzz
* @since 2006-2-2 xrl!$xE
GX
* @version 1.0 QPpC_pZh
*/ nx'D&,VX
public class InsertSort implements SortUtil.Sort{ r5aOQ
m&8'O\$
/* (non-Javadoc) [E|%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OAZ5I)D>
*/ N(^
q%eHp
public void sort(int[] data) { EAXbbcV
int temp; Vu_QwWXO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qc]Ki3ls
} 6` @4i'.
} %oE3q>S$en
} S+&Bf ~~D
"_T8Km008
} DF!*S{)
0_faJjTbP;
冒泡排序: <mdHca
$4a;R I
package org.rut.util.algorithm.support; DNl'}K1W
;/g Bjp]H
import org.rut.util.algorithm.SortUtil; e2l!L*[g
xRM)f93@
/** g/6>>p`J
* @author treeroot =Hwlo!
* @since 2006-2-2 `z{sDe;
* @version 1.0 m_g2Cep
*/ \bPSy0
public class BubbleSort implements SortUtil.Sort{ w4e(p 3
j>-O'CO
/* (non-Javadoc) &`IC3O5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YE5B^sQ1
*/ qt!0#z8
public void sort(int[] data) { Ryrvu 1 k
int temp;
Zf~Z&"C)
for(int i=0;i for(int j=data.length-1;j>i;j--){ Q9h;`G
7t
if(data[j] SortUtil.swap(data,j,j-1); #?EmC]N7
} 48Z0aA~+
} CDU$Gi
} %qqX-SF0C
} w5uOkz #
2Ub!wee
} ,4tuWO)"
(Ld,<!eN0
选择排序: 0<C]9[l
&@h(6
package org.rut.util.algorithm.support; QlCs,bT
VuWBWb?0Q
import org.rut.util.algorithm.SortUtil; R+y 9JE
)D"E]
/** <UC_QPA\
* @author treeroot {WoS&eL
* @since 2006-2-2 NP^j5|A*"
* @version 1.0 Oq3]ZUVa
*/ KJ;;825?
public class SelectionSort implements SortUtil.Sort { `}Z`aK
[Y_CRxa\u
/* hiQ #<
* (non-Javadoc) L6=`x a,
* ydm2'aV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U+FI^Xrt#
*/ 2j
<Y>Y
public void sort(int[] data) { -)LiL
int temp; $zUHka
for (int i = 0; i < data.length; i++) { oW
\k%Vj
int lowIndex = i; $]t3pAI[H0
for (int j = data.length - 1; j > i; j--) { yrVk$k#6}
if (data[j] < data[lowIndex]) { vQ",rP%
lowIndex = j; 7U,[Ruu
} A5[iFT>
} M\rZr3
SortUtil.swap(data,i,lowIndex); rCp'O\@S
} ]5Mq^@mD'
} F2:nL`]b[
Zt LZW/`
} K*[`s'Ip-
$WS?/H0C
Shell排序: *H({q`j33k
v%$c_'d
package org.rut.util.algorithm.support; d,d ohi
{|D7H=f
import org.rut.util.algorithm.SortUtil; 8%EauwAx
WAqH*LB
/** VY|'7in"M
* @author treeroot :'0.
* @since 2006-2-2 DP5}q"l
* @version 1.0 la}Xo0nq0+
*/ BDiN*.w5
public class ShellSort implements SortUtil.Sort{ ^Ez`WP
!/RL.`!>
/* (non-Javadoc) QopA'm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aF]cEe
*/ k(23Zt]
public void sort(int[] data) { UOYhz.
for(int i=data.length/2;i>2;i/=2){
V
krjs0
for(int j=0;j insertSort(data,j,i); gHmy?+)
} (29BS(|!
} 6[~_;0
insertSort(data,0,1); thK4@C|X4
} fx3oA}
3 =-XA2zJ
/** ]r.95|V*
* @param data wMvAm%}+
* @param j #)b0&wyW6i
* @param i Pof]9qE-y
*/ :-)H
ty zf
private void insertSort(int[] data, int start, int inc) { 'M!* Ge
int temp; ;@$v_i
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G A+#'R
} 8RaRXnJ
} LzGSN
} s9F{UN3
9L7jYy=A#
} l:- <CbG
~;/}D0k$x
快速排序: ^={s(B2
Xn=
package org.rut.util.algorithm.support; f{+n$Cos
~U$ioQy<
import org.rut.util.algorithm.SortUtil; wT@{=s,
/k^!hI"4c
/** :&`,T.N.vK
* @author treeroot u%b.#!
* @since 2006-2-2 PSREQK@}E
* @version 1.0
-?vII~a9y
*/ ]Mb:zs<r
public class QuickSort implements SortUtil.Sort{ !5*
V<ExR@|}.%
/* (non-Javadoc) Gk-49|qIV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y)uxj-G
*/ hA:RVeS{
public void sort(int[] data) { O0RV>Ml'&
quickSort(data,0,data.length-1); .{,fb
} ,0\Pr
private void quickSort(int[] data,int i,int j){ 4D=^24f`0
int pivotIndex=(i+j)/2; S2<evs1d
file://swap ,
G9{:
SortUtil.swap(data,pivotIndex,j); >eM>Y@8=
A3eus
int k=partition(data,i-1,j,data[j]); b`&
:`
SortUtil.swap(data,k,j); RcpKv;= iB
if((k-i)>1) quickSort(data,i,k-1); w
21g&
if((j-k)>1) quickSort(data,k+1,j); :sA$LNj}
CXd/M~:!
} P={8qln,X
/** XpIl-o&re
* @param data
x=YV*
* @param i Vqp3'=No
* @param j N'n\_ x
* @return uq\[^
*/ e]zd6{g[m
private int partition(int[] data, int l, int r,int pivot) { '
o(7@
do{ 2#)z%K6T
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ioJ|-@!#o
SortUtil.swap(data,l,r); #,CK;h9jy!
} "|nh=!L
while(l SortUtil.swap(data,l,r); (8Q*NZ
return l; `"h[Xb#A`b
} IutU~%wv
/zg|I?$>Z4
} L['g')g.
* _@t$W
改进后的快速排序: Ex-?[Hq
1+v!)Y>Z&
package org.rut.util.algorithm.support; H$rNT/C
N}CeQ'l[R
import org.rut.util.algorithm.SortUtil; .1YiNmW=
Jk}Dj0o
/** D* QZR;D#.
* @author treeroot p5`={'>-
* @since 2006-2-2 AQjf\i
* @version 1.0 TxP8&!d
*/ _"h1#E
public class ImprovedQuickSort implements SortUtil.Sort { ICD;a
-jk-ve
private static int MAX_STACK_SIZE=4096; =`E{QCW
private static int THRESHOLD=10; ,d@FO|G#pt
/* (non-Javadoc) VI k]`)#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^SWV!rrg
*/ +j(7.6ia
public void sort(int[] data) { >SW c
int[] stack=new int[MAX_STACK_SIZE]; r^T+I3
CfEACH4_
int top=-1; jL,P )TC
int pivot; sUz,F8G
int pivotIndex,l,r; <%"o-xZq7C
FO{?Z%& ;
stack[++top]=0; 9}$'q$0R]
stack[++top]=data.length-1; M$Ow*!DfP
.f-s+J&ED
while(top>0){ }9~U5UXWU
int j=stack[top--]; e)f!2'LL
int i=stack[top--]; S<81r2LT
@_H
L{q%h
pivotIndex=(i+j)/2; qZYh^\
pivot=data[pivotIndex]; a\*_b2 ^n
G'{*guYU
SortUtil.swap(data,pivotIndex,j); x:iLBYf
1 Szv4
file://partition &f-x+y
l=i-1; guk{3<d:Jy
r=j; R 6
-RH7.
do{ dhV6r
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bkS-[rW
SortUtil.swap(data,l,r); h
;1D T
} _g%,/y 9y
while(l SortUtil.swap(data,l,r); _<u>?
Qt
SortUtil.swap(data,l,j); ]N{jF$
z8<"
if((l-i)>THRESHOLD){ -0>s`ruor
stack[++top]=i; pM}n)Q!{3"
stack[++top]=l-1; '.*`PN5mDq
} #ba7r
]Xu
if((j-l)>THRESHOLD){ ?wpl
88z
stack[++top]=l+1; \{.c0
stack[++top]=j; Vc!'=&*
} wxE'h~+
NX8.
\Pf#
} _18Aek
file://new InsertSort().sort(data); A7R [~
insertSort(data); PYyT#AcW2
} AHet,N
/** -=GmI1:=$4
* @param data @umn[J#*
*/ 4P?R "Lk
private void insertSort(int[] data) { YQ`88z
int temp; r<!/!}fE,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zxC~a97`
} C&f{LpB`
} OZ4% 6/
} `>u^Pm
o[aIQ|G
} ?0?+~0sI
^?S lM
归并排序: thSXri?kl
V|)nUsU
package org.rut.util.algorithm.support; Y2W{?<99
#B5-3CwB
import org.rut.util.algorithm.SortUtil; ONMR2J(
'o|=_0-7W
/** OjsMT]
* @author treeroot _-z;
* @since 2006-2-2 o'=i$Eb
* @version 1.0 nZ4@g@e2
*/ O'S9y
public class MergeSort implements SortUtil.Sort{ LF ;gdF%@
Nt~G
{m
/* (non-Javadoc) >6:UWvV 1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H=6-@+ !o
*/ jH[{V[<#X
public void sort(int[] data) { VEx
)
int[] temp=new int[data.length]; 8Ud.}<
Zi
mergeSort(data,temp,0,data.length-1); Q1RUmIe_&
} KouIzWf.
H](TSt<Q"
private void mergeSort(int[] data,int[] temp,int l,int r){ s]Z++Lh<{
int mid=(l+r)/2; V(M7d>N5G
if(l==r) return ; &IP`j~b
mergeSort(data,temp,l,mid); 3bagL)'iz
mergeSort(data,temp,mid+1,r); qRCUkw} fs
for(int i=l;i<=r;i++){ YLp#z8 1e
temp=data; I@ D<rjR
} 3XhLn/@
int i1=l; BHR(B]EI
int i2=mid+1; e#^vA$d
for(int cur=l;cur<=r;cur++){ wUH:l
if(i1==mid+1) @6VkNe9
data[cur]=temp[i2++]; X4/3vY
else if(i2>r) Kza5_7p`L
data[cur]=temp[i1++]; OySn[4`(i
else if(temp[i1] data[cur]=temp[i1++]; e?<$H\
else &XB1=b5
data[cur]=temp[i2++]; {CQI*\O
} 3^]Kd
} smPZ%P}P+c
h%&2M58:
} oiItQ4{<
PDb7 h
改进后的归并排序: 8xx2+
-932[+
package org.rut.util.algorithm.support; ; g\rY
{i)FDdDGD
import org.rut.util.algorithm.SortUtil; ^t P|8k
})C}'!+]
/** =~'y' K]
* @author treeroot }8Nr.gY
* @since 2006-2-2 @+Anp4%;Y
* @version 1.0 @!B%ynrG
*/ h%] D[g
public class ImprovedMergeSort implements SortUtil.Sort { Xbc:Vr
J )UCy;Y
private static final int THRESHOLD = 10; "cGjHy\j`
e\! ic
/* vq1u!SY
* (non-Javadoc) D:XjJMW3r
* $|K-wN[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j=Z;M1
*/ J'*`K>wV
public void sort(int[] data) { v4r%'bA
int[] temp=new int[data.length]; yK w.69.
mergeSort(data,temp,0,data.length-1); Dj{=Y`Tw
} _^p\
u
90">l^HX=
private void mergeSort(int[] data, int[] temp, int l, int r) { \'+P5,
int i, j, k; r[3 2'E
int mid = (l + r) / 2; Iy@6cd,)S
if (l == r) )@6iQ
return; w5q'M
if ((mid - l) >= THRESHOLD) FLQ>,=O
mergeSort(data, temp, l, mid); ~X,ZZ 9H
else Ki\J)l
insertSort(data, l, mid - l + 1); p*~b5'+ C+
if ((r - mid) > THRESHOLD) N2&h yM
mergeSort(data, temp, mid + 1, r); K5 Z'kkOk
else LuWY}ste
insertSort(data, mid + 1, r - mid); t{O2JF#5u
J"Nn.iVq
for (i = l; i <= mid; i++) { #4F0o@Z
temp = data; ]EEac
} &J,&>CFc
for (j = 1; j <= r - mid; j++) { 8YO` TgW
temp[r - j + 1] = data[j + mid]; +[Q`I*C
} ML7qrc;Rx
int a = temp[l]; v(^;%
int b = temp[r]; b\C1qM4
for (i = l, j = r, k = l; k <= r; k++) { 4GexYDk'#
if (a < b) { `Lr|KuFN
data[k] = temp[i++]; Q;=3vUN
a = temp;
cfL:#IM
} else { b#Vm;6BHD1
data[k] = temp[j--]; $Fv|w9
b = temp[j]; 2 P9{?Y
} 9.Yn]O
} wcW}Sv[r
} ]
jycg@=B
vzZ"TSP
/** 6 IKi*}
* @param data I~25}(IDZ"
* @param l ]_2<uK}fg
* @param i r-5xo.J'
*/ 6QNO#!;
private void insertSort(int[] data, int start, int len) { %=5 m!"F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :7pt=IA
} \/?&W[T F
} `,Y/!(:;
} H'x_}y
} yOyuMZo6
Y|aaZ|+
堆排序: |],ocAN{
jiP^Hz"e
package org.rut.util.algorithm.support; %R?#Y1Tq;
3.@ir"vy
import org.rut.util.algorithm.SortUtil; j\2q2_f
9Nu:{_YoP
/** >RXDuCVi
* @author treeroot ^Kn:T`vB
* @since 2006-2-2 \0z<@)r+AJ
* @version 1.0 qoOq47F
*/ $rH}2
public class HeapSort implements SortUtil.Sort{ lfte
_tfi6UQ&lY
/* (non-Javadoc) 8v\^,'@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R^Y_i
*/ |4F'Zu}g>
public void sort(int[] data) { ,zh4oX`>
MaxHeap h=new MaxHeap(); 3|0OW
Jk
h.init(data); }N@+bNh~
for(int i=0;i h.remove(); 8C<%Y7)/
System.arraycopy(h.queue,1,data,0,data.length); o*xft6U
} -\M;bQV[C
idNg&'
private static class MaxHeap{ Ui}%T]
=7-@&S=?s
void init(int[] data){ d.p%jVO)"
this.queue=new int[data.length+1]; E~1"Nh
for(int i=0;i queue[++size]=data; cB}6{c$_sW
fixUp(size); H`NT`BE
} Vn6]h|vm
} !p(N
DQm
Ky)*6QOw
private int size=0; ^zR*s |1Q
{Zf 9}
!qF
private int[] queue; _yc&'Wq
?9;r|G
public int get() { A(wuRXnVWK
return queue[1]; !k8j8v&
} M[?0 ^ FBx
dU#}Tk
public void remove() { +D|E8sz8
SortUtil.swap(queue,1,size--); -h{| u{t
fixDown(1); >:f&@vwm
} Uw->5
file://fixdown $ cYKVhf
private void fixDown(int k) { S &F
int j;
@+!u{
while ((j = k << 1) <= size) { w7yz4_:x^
if (j < size %26amp;%26amp; queue[j] j++; %#@5(_'
if (queue[k]>queue[j]) file://不用交换 h3P ^W(=&
break; 2g%p9-MO]I
SortUtil.swap(queue,j,k); $
1v'CT
k = j; F+?g0w['
} NSQ#\:3:S
} 9v(k<('_
private void fixUp(int k) { 3/4r\%1b+
while (k > 1) { 4!DXj0^
int j = k >> 1; 6_O3/
if (queue[j]>queue[k]) *."50o=T
break; F'^?s= QX
SortUtil.swap(queue,j,k); YUQKy2
k = j; X&cm)o%5Fe
} g)^g_4
} M]A!jWtE
YCo qe,5
} }Z8DVTpX}
GA2kg7
} YY
8vhnw
T&s}~S=m
SortUtil: S/x CX!
Mt%=z9OLq9
package org.rut.util.algorithm; lAo S 9w
wZKEUJpQ
import org.rut.util.algorithm.support.BubbleSort; p]J0A ^VV
import org.rut.util.algorithm.support.HeapSort; ?eri6D,86w
import org.rut.util.algorithm.support.ImprovedMergeSort; gR@,"6b3
import org.rut.util.algorithm.support.ImprovedQuickSort; yPVK>em5
import org.rut.util.algorithm.support.InsertSort; +X!QH/ 8
import org.rut.util.algorithm.support.MergeSort; _Wgpk0
import org.rut.util.algorithm.support.QuickSort; Bngvm9k3
import org.rut.util.algorithm.support.SelectionSort; 7aJ:kumDZ
import org.rut.util.algorithm.support.ShellSort; 31~Rs?~f(
&E`=pe/e
/** 287)\FU;3
* @author treeroot 4pZ=CB+j
* @since 2006-2-2 l]z=0
* @version 1.0 nsy eid*
*/ u]s}@(+.
public class SortUtil { _?a.S8LxJZ
public final static int INSERT = 1; ,_RPy2N
public final static int BUBBLE = 2; :x36Z4:
public final static int SELECTION = 3; Yo[Pu< zR
public final static int SHELL = 4; P2sM3C
public final static int QUICK = 5; 's 'H&sa
public final static int IMPROVED_QUICK = 6; : 5<u!-}
public final static int MERGE = 7; 4?.L+wL
public final static int IMPROVED_MERGE = 8; W4n(6esO
public final static int HEAP = 9; AMc`qh
y~;w`5;|
public static void sort(int[] data) { 8&UwnEk<
sort(data, IMPROVED_QUICK); %2<u>=6byG
} SX@zDuM
private static String[] name={ Y@Ti2bI`v
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B%/N{i*Z
}; H:.l:PJ
MNd[Xzm
private static Sort[] impl=new Sort[]{ (5Sv$Xt
new InsertSort(), \#q|.d$u
new BubbleSort(), CC.ri3+.
new SelectionSort(), OmAa$L,'w
new ShellSort(), 41NVF_R6J
new QuickSort(), %mMPALN]{
new ImprovedQuickSort(), w}r~Wk^dLI
new MergeSort(), K#4Toc#=V
new ImprovedMergeSort(), IhPX/P
new HeapSort() Z$:iq
}; *{s
3.=P.
*1CZRfWI
public static String toString(int algorithm){ q1vsvL9Q
return name[algorithm-1]; >!%F$$
} 2~RG\JWTA
.Fm@OQr
public static void sort(int[] data, int algorithm) { #Hi$squJ
impl[algorithm-1].sort(data); Bf{c4YiF
} |}naI_Qudv
!\/J|~XZ
public static interface Sort { G2!J`}
public void sort(int[] data); eD?f|bif
} &AhkP=Yw
zHk7!|%Y
public static void swap(int[] data, int i, int j) { TI}Y U
int temp = data; q@Oe}
data = data[j]; *PF=dx<8
data[j] = temp; x5 ?>y{6D
} d.t$VRO
} ; )rXQm