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。 ^p!bteA>
插入排序: kC2_&L
Mq$Nra
package org.rut.util.algorithm.support; Id'@!U:NA
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import org.rut.util.algorithm.SortUtil; [8C6%n{W
/** &-6D'@
* @author treeroot k0R;1lZ0n
* @since 2006-2-2 1">]w2je:
* @version 1.0 =v]eQIp
*/ "6%vVi6
public class InsertSort implements SortUtil.Sort{ 4C_-MJI
b3!,r\9V
/* (non-Javadoc) hX@.k|Yd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bNO/CD4
*/ B^G{k3]t
public void sort(int[] data) { @X6|[r&Z
int temp; >SZ9,K4Gs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #]5|Qhrr+
} WS)u{
or
} yi/jZX
} yD!V;?EnK
J#y?^Qm$)<
} IRQ3> 4hI
u3H2\<
冒泡排序: `?L-{VtM3*
DeTZl+qm1E
package org.rut.util.algorithm.support; SAGLLk07G
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sT$set
import org.rut.util.algorithm.SortUtil; tr\Vr;zd
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/** <U$A_]*w
* @author treeroot #Rdq^TGMi;
* @since 2006-2-2 weiqt
*,8
* @version 1.0 _"`U.!3*
*/ v#`Wf}G
public class BubbleSort implements SortUtil.Sort{ xbA% 'p
o s
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/* (non-Javadoc) /Iu._2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jq&$YmWp
*/ L%.GKANM
public void sort(int[] data) { kM?p >V6
int temp; y]`@%V2P
for(int i=0;i for(int j=data.length-1;j>i;j--){ RKP->@Gs
if(data[j] SortUtil.swap(data,j,j-1); 8_tMiIE-pS
} +xlxhF
} ~4iIG}Y<
} Th%1eLQ
} @.X}S"yr
b_ |
} c#e_Fs
8EPV\M1%
选择排序:
0fPqO2
%?EOD=e=
package org.rut.util.algorithm.support; 41TB
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import org.rut.util.algorithm.SortUtil; WLWE%bDP
3EcmNwr
/** <z|? C
* @author treeroot FZ/l
T-"
* @since 2006-2-2 tH"SOGfSt
* @version 1.0 sy`:wp
*/ `8TM<az-L
public class SelectionSort implements SortUtil.Sort { $E4W{ad2jW
%6"b<
MAO
/* v; ;X2 a1k
* (non-Javadoc) puv*p%E
* 6Bp{FOj:Ss
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7
v<$l
*/ #?i#q%q
public void sort(int[] data) { y=\jQ6Fc
int temp; [j0I}+@4H
for (int i = 0; i < data.length; i++) { v}]x>f
int lowIndex = i; z[S,hD\w
for (int j = data.length - 1; j > i; j--) { \wNn c"
if (data[j] < data[lowIndex]) { t{>66jm\R
lowIndex = j; iEki<e/
} 7`tnoTUv
} v-)eT
SortUtil.swap(data,i,lowIndex); g}3c r.
} l#o43xr
} Em@h5V
B<[;rk
} xM;gF2
asW1GZO
Shell排序: WytCc>oL
n a2"Sy=Yi
package org.rut.util.algorithm.support; .KT+,Y
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cv
import org.rut.util.algorithm.SortUtil; .tN)H1.:B
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/** ;.W0Aa
* @author treeroot {zUc*9
* @since 2006-2-2 {7eKv+30
* @version 1.0 n/8Kb.Vf
*/ `CK;,>i
public class ShellSort implements SortUtil.Sort{ 7"xd'\c@
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/* (non-Javadoc) n/?5[O-D]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oJ8_hk<Va8
*/ 2,&lGyV#
public void sort(int[] data) { &J hN&Ur
for(int i=data.length/2;i>2;i/=2){ ~~zw[#'
for(int j=0;j insertSort(data,j,i); ! qcu-d5b
} 9v
cUo?/
} XU9=@y+|v
insertSort(data,0,1); ^MJGY,r6b
} h;4g#|,
cT0utR&
/** X_'.@q<!CV
* @param data 4&ea*w
* @param j d<7J)zUm3
* @param i HB`pK'gz
*/ v[a#>!;s
private void insertSort(int[] data, int start, int inc) { I9F[b#'Pn
int temp; -'PpY302
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;@d%<yMf@
} GYO\l.%V5y
} 7Xad2wXn
} iY|YEi8
qfSoF|
} {sm={q
_f3A6ER`
快速排序: M2@q{RiS
eF8`an5S
package org.rut.util.algorithm.support; Km <Wh=
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import org.rut.util.algorithm.SortUtil; zK-hNDFL{
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/** 0= 'DDy
* @author treeroot Ab2g),;c
* @since 2006-2-2 gv[7h'}<
* @version 1.0 l(]\[}.5
*/ "j a0,%3
public class QuickSort implements SortUtil.Sort{ uCu,'F,6Y
3(5RUI-
/* (non-Javadoc) ImV54h'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mzT} C&hfP
*/ AVyZ#`,
public void sort(int[] data) { MW`a>'0t?
quickSort(data,0,data.length-1); /a$+EQ$
} owMH
private void quickSort(int[] data,int i,int j){ @6j*XF
int pivotIndex=(i+j)/2; .897Z|$VB
file://swap 2 !;4mij,
SortUtil.swap(data,pivotIndex,j); g
Go
#h3+T*5} 6
int k=partition(data,i-1,j,data[j]); 4{vd6T}V!
SortUtil.swap(data,k,j); Eq8OAuN
if((k-i)>1) quickSort(data,i,k-1); tJwF
h6
if((j-k)>1) quickSort(data,k+1,j);
l#~FeD
/5x`TT
} r0X2cc
/** /M3D[aR<d
* @param data z'qVEHc)
* @param i j&Hn`G
* @param j }a9C/t3
* @return Nr[Rp
*/ 'd t}i<
private int partition(int[] data, int l, int r,int pivot) { Y;Ur8q
do{ ^TEODKS
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *2AQ'%U~
SortUtil.swap(data,l,r); /B!m|)h5~
} fjWh}w8
while(l SortUtil.swap(data,l,r); EORRSP,$2
return l; \9}5}X_x.
} @qC:% |>
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} Oq2H>eW`f
c}QJ-I
改进后的快速排序: -Y[-t;
t~M<j|]k
package org.rut.util.algorithm.support; eurudl
g\-3c=X
import org.rut.util.algorithm.SortUtil; S!q}Pn
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/** V1:3
* @author treeroot vUK>4^{J5
* @since 2006-2-2 _#4,&bh8
* @version 1.0 ,\M_q">npc
*/ v$i%>tQ\
public class ImprovedQuickSort implements SortUtil.Sort { _Y|kX2l
S@
cik@QN<[0
private static int MAX_STACK_SIZE=4096; u W|x)g11a
private static int THRESHOLD=10; 7[H`;l
/* (non-Javadoc) YxtkI:C?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? g{,MP5
*/ cP2R24th
public void sort(int[] data) { 8QN8bGxK
int[] stack=new int[MAX_STACK_SIZE]; m6x. "jG
Yy)a,clZ*$
int top=-1; cA%U
int pivot; vs@:L)GW\
int pivotIndex,l,r; spx;QLo
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stack[++top]=0; %^l&fM*
stack[++top]=data.length-1; +zdkdS,2<
)A0&16<
while(top>0){
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int j=stack[top--]; YgiGI
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int i=stack[top--]; Gx!RaZ1
CCY|FK
pivotIndex=(i+j)/2; k@aP&Z~
pivot=data[pivotIndex]; ]'h)7
Mdrv/x{
SortUtil.swap(data,pivotIndex,j); ,&?q}M
| q16%6q
file://partition \z`d}\3(R
l=i-1; 8-5jr_*
r=j; |I}+!DDuv
do{ }AiS83B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]2%P``Yj
SortUtil.swap(data,l,r); \r%Vgne-g
} `Y\/US70{c
while(l SortUtil.swap(data,l,r); Hm*vKFhz
SortUtil.swap(data,l,j); 3K!0 4\
y+scJ+<
if((l-i)>THRESHOLD){ E
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stack[++top]=i; ^R7z LHU;
stack[++top]=l-1; _<a)\UR
} mY8=qkZE
if((j-l)>THRESHOLD){ >ij4z
N
stack[++top]=l+1; /V<`L
stack[++top]=j; B^(rUR
} $l;tP
,A!e"=HF
} b<(UmRxx3
file://new InsertSort().sort(data); jN}7BbX
insertSort(data); ePpK+E[0Z
} ~9 WJrRWB
/** 3t8H?B12ow
* @param data /Z "
4[
*/ O|&TL9:
private void insertSort(int[] data) { D
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int temp; Hs}"A,V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]A]E)*
} 8Qz7uPq
} RpK,ixbtA+
} 2Ml2Ue-9
*@arn Eu
} ~}0hN]*G
.&x?`pER
归并排序: -mHhB(Td'
z{3%Hq
package org.rut.util.algorithm.support; /Tf*d>Yh;
0*;9CH=BE
import org.rut.util.algorithm.SortUtil; :5K~/=6x
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/** CotMV^
* @author treeroot Z)O>h^0
* @since 2006-2-2 A%*DQ1N
* @version 1.0 R,w54},
*/ }Q=se[((
public class MergeSort implements SortUtil.Sort{ Zc3:9
c^Gwri4
/* (non-Javadoc) ,q@(L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ms\/=96F
*/ ar
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public void sort(int[] data) { #oroY.o
int[] temp=new int[data.length]; !bV(VRbu
mergeSort(data,temp,0,data.length-1); vx5o
k1UY
} tbzvO<~
?> M oV5
private void mergeSort(int[] data,int[] temp,int l,int r){ YeExjC
int mid=(l+r)/2; ua|Z`qUyq
if(l==r) return ; l&sO?P[ /
mergeSort(data,temp,l,mid); Xf_tj:eO~
mergeSort(data,temp,mid+1,r); ~sHZh
for(int i=l;i<=r;i++){ &]yJCzo]
temp=data; Y5i`pY/}#?
} Cb%.C;q
int i1=l; Bd oC6H
int i2=mid+1; fpK0MS]=b
for(int cur=l;cur<=r;cur++){ "p~]m~g
if(i1==mid+1) B
mBzOk^
data[cur]=temp[i2++]; /yw\(|T
else if(i2>r) h
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data[cur]=temp[i1++]; &8_f'+i0
else if(temp[i1] data[cur]=temp[i1++]; d+m6-4[_k
else C|d!'"p
data[cur]=temp[i2++]; (_&V9vat=
} K?Xo3W%K
} 1[/$ZYk:
d[RWkk5
} P$6f +{
:YJ7J4
改进后的归并排序: R#7+
&X]=Qpl
package org.rut.util.algorithm.support; ,4>WLJDo
BtpjQNN
import org.rut.util.algorithm.SortUtil; x:n9dm
:&1=8^B Y
/** nA_
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* @author treeroot kk/+Vx~
* @since 2006-2-2 J<($L}T*$
* @version 1.0 nhQ44qRgQ
*/ AeY$.b
public class ImprovedMergeSort implements SortUtil.Sort { Bsu=^z
! F;<xgw
private static final int THRESHOLD = 10; D=82$$
RdvPsv}D
/* D#/%*|
* (non-Javadoc) Wq{d8|)1
* X6Nm!od'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 <)gCHa
*/ =8$0$d
public void sort(int[] data) { kHJDX;
int[] temp=new int[data.length]; PK2Rj%
mergeSort(data,temp,0,data.length-1); wKi}@|0[@
} }KD7 Y
2iR:*}5
private void mergeSort(int[] data, int[] temp, int l, int r) { [aWDD[#j~
int i, j, k; 5&-j{J0iV
int mid = (l + r) / 2; l)i&ATvCE
if (l == r) Q/3tg
return; *_{l
if ((mid - l) >= THRESHOLD) p(H)WD
mergeSort(data, temp, l, mid); "BLv4s|y7L
else "%}Gy>;
insertSort(data, l, mid - l + 1); TJyH/C
if ((r - mid) > THRESHOLD) Gdf1+mi
mergeSort(data, temp, mid + 1, r); XAQ\OX#
else %TW%|"v
insertSort(data, mid + 1, r - mid); ~`~%(DA=
z)ft3(!
for (i = l; i <= mid; i++) { 0279g
temp = data; 2Z/][?Jj{
} ebO`A2V'(
for (j = 1; j <= r - mid; j++) { rF8W(E_=
temp[r - j + 1] = data[j + mid]; }1a <{&
} %0+h
int a = temp[l]; <=)D=Ax/_[
int b = temp[r]; 3XAp Y'
for (i = l, j = r, k = l; k <= r; k++) { \tiUEE|k
if (a < b) { `'[7~ Ew[
data[k] = temp[i++]; WbC0H78]
a = temp; 9zoT6QP4
} else { -TK|Y"
data[k] = temp[j--]; P|e:+G 7
b = temp[j]; rR,+G%[(=4
} F=-uDtQ<N
} .Ca"$2
} "}'8`k+d
:Wyn+
/** P0'e"\$
* @param data `N|U"s;
* @param l nJtEUVMt
* @param i 7x[LF ^o
*/ ( Lok
private void insertSort(int[] data, int start, int len) { Xq8uY/j
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
!fQJL
} DD12pL{QA
} zz(!t eBC
} ;NiArcAS!
} X
zi'Lu`
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堆排序: *Fa)\.XX
)K>Eniou
package org.rut.util.algorithm.support; QvG56:M3
"8wf.nZ
import org.rut.util.algorithm.SortUtil; B\=SAi
tr6jh=
/** yCF"Z/.
* @author treeroot [+g(
* @since 2006-2-2 <mv7HKVg
* @version 1.0 Je#!Wd
*/ #dva0%-1
public class HeapSort implements SortUtil.Sort{ /<3;0~#){
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/* (non-Javadoc) g9yaNelDh)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
Veb+^&
*/ Lv
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public void sort(int[] data) { 2-vJv+-
MaxHeap h=new MaxHeap(); ^lHb&\X
h.init(data); 1fz*SIjG
for(int i=0;i h.remove(); -M7K8
System.arraycopy(h.queue,1,data,0,data.length); wF|0n t
} Yw$a{5g
{l&Ltruhz
private static class MaxHeap{ 82j'MgGP
(Oxz'#TX
void init(int[] data){ "C_T]%'Wm
this.queue=new int[data.length+1]; !GlnQ`T
for(int i=0;i queue[++size]=data; 5x*5|8
fixUp(size); t$U3|r
} nc3sty1`
} ES^>[2Y
L*zbike
private int size=0; (NGu9uJs
(H&@u9K?a?
private int[] queue; qSFc=Wwc
GY oZ$p" C
public int get() { rPRrx-A
return queue[1]; 38[)[{G)Hv
} jP1$qhp
bjPka{PBj
public void remove() { 6eOrs-ty
SortUtil.swap(queue,1,size--); mND XzT&
fixDown(1); NJn&>/vM
} aQ(`6DQv
file://fixdown 7cIC&(h5
private void fixDown(int k) { iLF^%!:X%
int j;
uY.=4l
while ((j = k << 1) <= size) { l%rx#;=u
if (j < size %26amp;%26amp; queue[j] j++; cqeR<len
if (queue[k]>queue[j]) file://不用交换 /SnynZ.q
break; :|Z$3q
SortUtil.swap(queue,j,k); R;H?gE^m-
k = j; 1a<]$tZk
} J__;.rnk
} lkV6qIj
private void fixUp(int k) { ,VPbUo@
while (k > 1) { +p13xc?#j
int j = k >> 1; 'I&|1I^
if (queue[j]>queue[k]) ,`;jvY~Ec
break; HR;/Br
SortUtil.swap(queue,j,k); uA~YRKer
k = j; -@rxiC:Q
} HV ;;
} D,MyI#
GtF2@\
} Z`rK\Bc
>4,{6<|
} }<SNO)h3
vKU`C?,L
SortUtil: :bwM]k*$
>B0D/:R9
package org.rut.util.algorithm; |Dg;(i?
{T&v2u#S
import org.rut.util.algorithm.support.BubbleSort; VJ3hC[
import org.rut.util.algorithm.support.HeapSort; $Z/klSEf
import org.rut.util.algorithm.support.ImprovedMergeSort; hF2/
y.:P
import org.rut.util.algorithm.support.ImprovedQuickSort; Yy]T
J
import org.rut.util.algorithm.support.InsertSort; L{=l#vu
import org.rut.util.algorithm.support.MergeSort; N;<//,
import org.rut.util.algorithm.support.QuickSort; <D;MT96SG
import org.rut.util.algorithm.support.SelectionSort; "LOnDa7E^
import org.rut.util.algorithm.support.ShellSort; J2r1=5HS
Yrpxy.1=F5
/** 'V&2Xvl%
* @author treeroot $'^&\U~?
* @since 2006-2-2 v51EXf
* @version 1.0 U|8[#@r
*/ oAY_sg+
public class SortUtil { W}>=JoN^J
public final static int INSERT = 1; ;
yyO0Ha
public final static int BUBBLE = 2; tev QW
public final static int SELECTION = 3; GJX4KA8J
public final static int SHELL = 4; Y&s2C%jT
public final static int QUICK = 5; `|]e6Pb
public final static int IMPROVED_QUICK = 6; }'lNi^"XL
public final static int MERGE = 7; Q!K`e )R
public final static int IMPROVED_MERGE = 8; [G a~%m
public final static int HEAP = 9; &eIGF1ws
m=QCG)s
public static void sort(int[] data) { VpSEVd:n
sort(data, IMPROVED_QUICK); CN/IH
} @;m$ua*|:
private static String[] name={ ;`kWpM;
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W}h|K:-S
}; X/Y#U\
GQx9u^>
private static Sort[] impl=new Sort[]{ {7X#4o0
new InsertSort(), 2Pp&d>E4
new BubbleSort(), |6%.VY2b
new SelectionSort(), "V3}t4
new ShellSort(), ,d|vP)SS
new QuickSort(), Tw//!rpG
new ImprovedQuickSort(), L~dC(J)@ZI
new MergeSort(), Noh?^@T`Ov
new ImprovedMergeSort(), IZ 8y}2
new HeapSort() OC_M4{9/
}; J3G7zu8
:mpiAs<%U"
public static String toString(int algorithm){ =OYQM<q
return name[algorithm-1]; W/r^ugDV
} I]X
cOkgoL" 4
public static void sort(int[] data, int algorithm) { H?uukmZl
impl[algorithm-1].sort(data); 4\p-TPM
} ' "'Btxz
H] k'?;
public static interface Sort { jJ~Y]dQi
public void sort(int[] data); zE`R,:VI
} 0+EN@Y^dAV
Uki9/QiX>
public static void swap(int[] data, int i, int j) { ,)h)5o(?
int temp = data; B!b sTvX
data = data[j]; B
wC+ov=
data[j] = temp; tWY2o3j
} pUCK-rL
} (KTnJZ