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。 Eg|C
插入排序: (e6KSRh2fF
M/a5o|>8
package org.rut.util.algorithm.support; c9N5c
k8ej.
import org.rut.util.algorithm.SortUtil; 3k?|-js
/** @)p?!3{"
* @author treeroot >>HC|
* @since 2006-2-2 gpzZs<ST
* @version 1.0 9jTm g%
*/ -
-H%FYF`
public class InsertSort implements SortUtil.Sort{ 92S,W?(
-axV;+"b
/* (non-Javadoc) .LHzaeJCX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y]Y]"y$1
*/ 9$:+5f,%a
public void sort(int[] data) { F
{T\UX
int temp; Stxrgmu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H?<ceK'e
} B(|dT66K
} j*}2AI
} "jG-)k`a
,}_uk]AQ
} $>y
'2.11cM3
冒泡排序: ?3+>% bO
:*{\oqFn~$
package org.rut.util.algorithm.support; JPfE`NZ
TZ+2S93c
import org.rut.util.algorithm.SortUtil; h9L/.>CX
>n^[-SWJCT
/** >On"BP# U
* @author treeroot &24z`ZS[w6
* @since 2006-2-2 h9 &V
* @version 1.0 hz_F^gF
*/ v"a.%"oN8
public class BubbleSort implements SortUtil.Sort{ `T;Y%"X!
n32.W?9
/* (non-Javadoc) *<nfA}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v\?J$Hdd
*/ Ffp<|2T2_
public void sort(int[] data) { MW6KEiQ"
int temp; fKZgAISF
for(int i=0;i for(int j=data.length-1;j>i;j--){ koAM",5D
if(data[j] SortUtil.swap(data,j,j-1); jIs2R3B
} #[{xEVf
} mjz<,s`D
} bP ,_H
} %!e;sL~&
$1$T2'C~+
} ;BMm47<
F"M$ "rC]
选择排序: +O,h<*y
FI$#x%A
package org.rut.util.algorithm.support; jB-)/8.qk
CD+2
w
cy
import org.rut.util.algorithm.SortUtil; +B0G[k7
v/B:n
/** K'zG[[P
* @author treeroot X@n\~[.B
* @since 2006-2-2 +w
pe<T
* @version 1.0 kbkq.fYr
*/ |r=.}9
-
public class SelectionSort implements SortUtil.Sort { ib%x&?||
\7Fkeo+
/* 2i3& 3oz]O
* (non-Javadoc) pD>^Dfd
* Ma`Goi\vFk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?hQ,'M2
*/ rX<gcntv
public void sort(int[] data) { .5~W3v
<
int temp; Z/ypWoV(
for (int i = 0; i < data.length; i++) { _("&jfn
int lowIndex = i; XiB]I5(hcc
for (int j = data.length - 1; j > i; j--) { g$f;
if (data[j] < data[lowIndex]) { 8>|@O<2\
lowIndex = j; =
5E:C P
} =':,oz^|
} }@V,v[&e
SortUtil.swap(data,i,lowIndex); dn1Tu6f;|
} pH1 9"=p<
} HjFY>(e
Hf'yRKACj
} @Sl!p)
t!Uc,mEV]
Shell排序: Ay Obaa5
3[jk}2R';p
package org.rut.util.algorithm.support; ^:RDu q
>5jHgs#
import org.rut.util.algorithm.SortUtil; [}OL@num
]3E':JM@
/** ;#$zHR
* @author treeroot 9$xEktfV
* @since 2006-2-2 plY`lqm
* @version 1.0 *0^t;A+
*/ =/Dp*
public class ShellSort implements SortUtil.Sort{ !I? J^0T
PUN.nt
/* (non-Javadoc) D=fB&7%@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (qP !x 2j
*/ 0P_Y6w+
public void sort(int[] data) { QJG]z'c+
for(int i=data.length/2;i>2;i/=2){ 4D/mm(2d$
for(int j=0;j insertSort(data,j,i); >)N}V'9
} Mlpq2I_x
} _5nQe
!
insertSort(data,0,1); "F+Wo&
} "Jp6EL%
2Z-BZu K6p
/** z^f-MgWG
* @param data CDcs~PR@B
* @param j YJ5;a\QxN
* @param i ~%Ws"1
*/ Kup-O
u,
private void insertSort(int[] data, int start, int inc) { >Q~"/-bN)
int temp; L?^C\g6u]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L#e|t0'#
} BX),U
} tc{23Rf%
} b'N"?W^YQ
_OF8D
} 2#Au6BvX
S)"5X)mq
快速排序: |7zm!^t$
Oh:SH|=]#
package org.rut.util.algorithm.support; F|V co]"S1
MjI}fs<
import org.rut.util.algorithm.SortUtil; 55oLj.l^j
KG#|Cq
/** qi7wr\XNW
* @author treeroot O'."ca]:5
* @since 2006-2-2 ?.A6HrAPB
* @version 1.0 Q9[dUdQm
*/ utwh"E&W
public class QuickSort implements SortUtil.Sort{ ^;YD3EZw
i[ BR"(
/* (non-Javadoc) 2|~&x~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2597#O
*/ >t8eVMMa
public void sort(int[] data) { r/Pg,si
quickSort(data,0,data.length-1); S$"A[
} 7$GP#V1r/
private void quickSort(int[] data,int i,int j){ f|VP_o<
int pivotIndex=(i+j)/2; CRWO R pP
file://swap )m[!HE`cZ
SortUtil.swap(data,pivotIndex,j); ,`|KNw5
d*3R0Q|#{
int k=partition(data,i-1,j,data[j]); cf@#a@7m9
SortUtil.swap(data,k,j); 7k3":2:
if((k-i)>1) quickSort(data,i,k-1); &F#X0h/m=
if((j-k)>1) quickSort(data,k+1,j); v *:m|wl
TF^]^XS'
} 3iWLo Qm
/** c_^H;~^rL
* @param data nbpN+a%
* @param i 7<.f&1MgI
* @param j =GR
Em5
* @return '~ ]b;nA
*/ ij hMJ?3
private int partition(int[] data, int l, int r,int pivot) { L761m7J]B
do{ lQ+-g#`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >5 5/@+^
SortUtil.swap(data,l,r); _k+Bj.L
} *rEW@06^\
while(l SortUtil.swap(data,l,r); &U
'Ds!
return l; g1J]z<&
} f\(K ou$
jv0e&rt
} P6=|C;[
>Ft jrEB
改进后的快速排序: `ZefSmb
0XozYyq
package org.rut.util.algorithm.support; V,M8RYOnC!
_F3vC#
import org.rut.util.algorithm.SortUtil; Ar'5kPzY>
GV[[[fu
/** d&'6l"${
* @author treeroot @pkozE-
* @since 2006-2-2 mI`dZ3h
* @version 1.0 ;5=pBP.
*/ 98 O z
public class ImprovedQuickSort implements SortUtil.Sort { U3U eTa_
x@k9]6/zs
private static int MAX_STACK_SIZE=4096; rfPJBD{Ve
private static int THRESHOLD=10; *p WswcV/
/* (non-Javadoc) <g %xo"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;%82Z4
*/ `aI%laj&M
public void sort(int[] data) {
b'Uaj`Sn
int[] stack=new int[MAX_STACK_SIZE]; ng 6G<hi
z(%Zji@!N
int top=-1; W4YC5ZH{l
int pivot; 4*dT|NU
int pivotIndex,l,r; "1#,d#Q $
1%=,J'AH
stack[++top]=0; -0\$JAyrx
stack[++top]=data.length-1; 7I.[1V`
Lq&xlW
j
while(top>0){ %Bo Jt-v
int j=stack[top--]; P2Eyqd8
int i=stack[top--]; ?NwFpSB2
_88~uYG
pivotIndex=(i+j)/2; '/p5tw8
pivot=data[pivotIndex]; I%s/h4x^B[
E|fPI u
SortUtil.swap(data,pivotIndex,j); G37_
`C
. }1!MK5
file://partition BW*zj=N%
l=i-1; 3~S~)quwP
r=j; O0I/^
do{ ,#m\W8j
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _6[NYv$"
SortUtil.swap(data,l,r); L`p[Dq.
} 5s|gKM
while(l SortUtil.swap(data,l,r); R`<E3J\*
SortUtil.swap(data,l,j); @F1pu3E
bBQp:P?E
if((l-i)>THRESHOLD){ w5nRgdboy!
stack[++top]=i; +*!!
stack[++top]=l-1; RcE%?2lD
} fGfv{4R
if((j-l)>THRESHOLD){ ~>EVI=?
stack[++top]=l+1; >]`x~cE.5
stack[++top]=j; ':[y]ep(~|
} ](ninSX1w
X3>(K1
} bC{~/ JP
file://new InsertSort().sort(data); ?:2Xh/8-
insertSort(data); uJ$"2<O
} SW=p5@Hy{
/** z(=:J_N
* @param data =wQ=`
*/ 93rE5eGs
private void insertSort(int[] data) { 8;5/_BwMu
int temp; {F4:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
g$97"d'
} 5-J-Tn
} 4H:WpW*r
} BKTsc/v2>:
e?7paJ
} prWid3}
'SY&-<t(
归并排序: l%IOdco#
E5dXu5+ye
package org.rut.util.algorithm.support; D'&LwU,o
:z:Blp>nK/
import org.rut.util.algorithm.SortUtil; t Z%?vY~!
4>W`XH
/** K$Ph$P@
* @author treeroot izxCbbg
* @since 2006-2-2 I5~DC
* @version 1.0 F,
"x~C
*/ DjKjEZHgM
public class MergeSort implements SortUtil.Sort{ eOb`uyi
s6$3[9Vh&9
/* (non-Javadoc) We ->d |=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oK>,MdB
*/ p%s
D>1k
public void sort(int[] data) { JjmL6(*ui
int[] temp=new int[data.length]; 76m[o
mergeSort(data,temp,0,data.length-1); YJy*OS_&
} w9FI*30
3%} Ma,
private void mergeSort(int[] data,int[] temp,int l,int r){ cm]]9z_<
int mid=(l+r)/2; A>?fbY2n
if(l==r) return ; oxzNV&D[{`
mergeSort(data,temp,l,mid); 7I|%GA_
mergeSort(data,temp,mid+1,r); 1mX*0>
for(int i=l;i<=r;i++){ 1 W0; YcT]
temp=data; 0D'Wr(U(
} |^F-.Z
int i1=l; eZ!k'bS=
int i2=mid+1; qkIU>b,B
for(int cur=l;cur<=r;cur++){ $o/>wgQY-
if(i1==mid+1) @2mP
data[cur]=temp[i2++]; &0g,Xkr
else if(i2>r) ]VvJ1Xn0
data[cur]=temp[i1++]; c;^ J!e
else if(temp[i1] data[cur]=temp[i1++]; ^Toi_
else ff#-USK^R
data[cur]=temp[i2++]; cabN<a
l
} ^6+x0[13
} #jX>FXo
@I&"P:E0F;
} =Wf@'~K0k"
`T70FsSJ
改进后的归并排序: QP#Wfk(C
#-;BU{3*
package org.rut.util.algorithm.support; ~laZ(Bma);
:m d3@r']
import org.rut.util.algorithm.SortUtil; ng*%1;P
=r~.I
/** z m'jk D|
* @author treeroot ! Cl/=0$[L
* @since 2006-2-2 +2SX4Kxu
* @version 1.0 Iqsk\2W]a3
*/ qC )VT3
public class ImprovedMergeSort implements SortUtil.Sort { .N=hA
qj&)w9RLJE
private static final int THRESHOLD = 10; />C~a]}
+!vRU`
/* M2}<gRL*}J
* (non-Javadoc) ZhsZywM
* "b
0cj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h6*`V
*/ U3}R^W~eb
public void sort(int[] data) { vNC0M:p,
int[] temp=new int[data.length]; ]D%k)<YK
mergeSort(data,temp,0,data.length-1); N-gRfra+8L
} 6<Z:Xw
spJ(1F{|V
private void mergeSort(int[] data, int[] temp, int l, int r) { 4*x!B![]y
int i, j, k; PAHlj,n)
int mid = (l + r) / 2; 0Mg8{
if (l == r) F:S,{&jB
return; W[Bu&?h$
if ((mid - l) >= THRESHOLD) 7g)3\C
mergeSort(data, temp, l, mid); @@wx~|%
else CeTr%j
insertSort(data, l, mid - l + 1); _sVs6AJ
if ((r - mid) > THRESHOLD) 86#mmm)
mergeSort(data, temp, mid + 1, r); >Mw &Tw}o
else #ja`+w}
insertSort(data, mid + 1, r - mid); P0xLx
|lxy< C4V
for (i = l; i <= mid; i++) { +ZKhmb!
temp = data; |Vi&f5p,@
} U*Qq5=dqD
for (j = 1; j <= r - mid; j++) { 'c&@~O;^d
temp[r - j + 1] = data[j + mid]; 4_+Pv6
} K//T}-Uub
int a = temp[l]; N}fUBX4k
int b = temp[r]; N-`;\
for (i = l, j = r, k = l; k <= r; k++) { hXm}d\
if (a < b) { ,dx)rZ*
data[k] = temp[i++]; JtpY][}"~3
a = temp; L\NZDkd
} else { A Vm{#^p[(
data[k] = temp[j--]; N?;o_^C
b = temp[j]; `mjx4Lb
} 7[g;|(G0
} rxj@NwAno
} ^,lZ58
2
Rt^<xXX$
/** p{q!jm~Nq
* @param data 4q13xX
* @param l c1kxKxE
* @param i ]<gCq/V #
*/ A&c@8
private void insertSort(int[] data, int start, int len) { ]^9*
t,{9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y?n2`l7f
} =`~Z@IbdI
} c%@~%IGF
} {|Ki^8 h/p
} (YHvGGr
bz0P49%
堆排序: Ia`JIc^e
P4j 8`}&/
package org.rut.util.algorithm.support; W[E3P,XS
xwnoZ&h
import org.rut.util.algorithm.SortUtil; :KSor}t
JhCkkw
/** N4mJU'_{
* @author treeroot s;2/Nc
* @since 2006-2-2 ~59`S#ax/l
* @version 1.0 M+;P?|a
*/ +}QBzGW`
public class HeapSort implements SortUtil.Sort{ u=;nU(]M '
!?o$-+a|
/* (non-Javadoc) ^YR|WK Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oD#>8Aw s
*/ kq~[k.
public void sort(int[] data) { rEyz|k:
MaxHeap h=new MaxHeap(); ,LW+7yD
h.init(data); c5E#QV0&v~
for(int i=0;i h.remove(); [OZ=iz.
System.arraycopy(h.queue,1,data,0,data.length); rN1U.FRe/
} -
SS r
~sIGI?5f
private static class MaxHeap{ EeJqszmH
j;20JA/b
void init(int[] data){ 0[:9 Hb6
this.queue=new int[data.length+1]; Ae j
for(int i=0;i queue[++size]=data; K-
I\P6R`
fixUp(size); #[a"%byTR
} ) wY!/&
} g&+Y{*Gp
qC1U&b#MVx
private int size=0; H5rPq_R
P:(EU s}0
private int[] queue; .L7Yf+yFg
/^LH
public int get() { *SkiFEoD
return queue[1]; j\'+wVyo
} px|>v8
1Vf78n
public void remove() { oY%"2PW1B
SortUtil.swap(queue,1,size--); a1G9wC:e
fixDown(1); *i?rJH
} |vfujzRZ
file://fixdown +z|UpI
private void fixDown(int k) { 3gG+`{<
int j; "65||[=8
while ((j = k << 1) <= size) { *:9 >W$0u
if (j < size %26amp;%26amp; queue[j] j++; H5Ux.]y
if (queue[k]>queue[j]) file://不用交换 =0h|yjnL/
break; 0aC2 Pym^
SortUtil.swap(queue,j,k); Wk`bb!P_
k = j; 6KEykw
j
} lC=N:=Mu
} }2ql?K
private void fixUp(int k) { ^p 2.UW
while (k > 1) { dXiE.Si
int j = k >> 1; O
xT}I
if (queue[j]>queue[k]) {jOzap|
break; xN`r4
SortUtil.swap(queue,j,k); @%OPy|=,{
k = j; -J"qrpZ^
} 7-".!M
} s]y-pZ
[J)/Et
} n .f4z<
-,QKTxwo>
} X!o[RJY
6|
*(dE2x(
SortUtil: -RG8<bI,
euV $2Fg
package org.rut.util.algorithm; s,
n^
?}'N_n ys
import org.rut.util.algorithm.support.BubbleSort; ]?0{(\
import org.rut.util.algorithm.support.HeapSort; e9CP802#2
import org.rut.util.algorithm.support.ImprovedMergeSort; \G$QNUU
import org.rut.util.algorithm.support.ImprovedQuickSort; &
u$(NbK
import org.rut.util.algorithm.support.InsertSort; {I0w`xe
import org.rut.util.algorithm.support.MergeSort; @B,j;2eb
import org.rut.util.algorithm.support.QuickSort; xw PI
import org.rut.util.algorithm.support.SelectionSort; {y,nFxLq
import org.rut.util.algorithm.support.ShellSort; k"">2#V
I&L.;~
/** U^%9
)4bj
* @author treeroot rO/a,vV
* @since 2006-2-2 "^;#f+0
* @version 1.0 HLjvKE=W
*/ &Nc[$H7<
public class SortUtil { )@}A
r
public final static int INSERT = 1; }m6f^fs}
public final static int BUBBLE = 2; [34zh="o
public final static int SELECTION = 3; 1ZT^)/ G
public final static int SHELL = 4; Wrmgu}q
public final static int QUICK = 5; 3A-*vaySV
public final static int IMPROVED_QUICK = 6; "\}b!gl$8
public final static int MERGE = 7; pw@`}cM=
public final static int IMPROVED_MERGE = 8; ]\A1mw-T
public final static int HEAP = 9; w#*/ y?"D
m8'@UzB
public static void sort(int[] data) { bb|}'
sort(data, IMPROVED_QUICK); >s&XX,
w
} ;\N79)Gk
private static String[] name={ /"=29sWB
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bk,2WtVX
}; q 75ky1^1:
(tepmcf
private static Sort[] impl=new Sort[]{ Le*`r2
new InsertSort(), 0|g[o:;fl_
new BubbleSort(), WtIMvk
new SelectionSort(), }N?g|
new ShellSort(), O?CdAnhQc`
new QuickSort(), d]U`?A,
new ImprovedQuickSort(), ~?gzq~~t
new MergeSort(), .>}BNy
new ImprovedMergeSort(), 0HqPyM13Q
new HeapSort() >-!r9"8@
}; +A@m9
<mL%P`Jj
public static String toString(int algorithm){ C
8N%X2R
return name[algorithm-1]; C1b*v&1{
} z.
'Fv7
$; ?c?n+
public static void sort(int[] data, int algorithm) { KyT uF
impl[algorithm-1].sort(data); ;_}~%-_
~
} W!t{rI7 2
rn;<HT
public static interface Sort { /ip lU
public void sort(int[] data); +jUgx;u,
} FC{})|yh
}
a0PE^U
public static void swap(int[] data, int i, int j) { `M:DZNy,
int temp = data; 42&v% ;R
data = data[j]; kVd5,Qd
data[j] = temp; `?l3Ct*
} vv+km +
} (~JwLe@a