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。 Giid~e33
插入排序: 8^kGS-+^
M-$%Rzl_
package org.rut.util.algorithm.support; u0}vWkn\4
L 8c0lx}Nn
import org.rut.util.algorithm.SortUtil; sG(~^hJ_
/** 9Uh"iMB
* @author treeroot s%vis{2
* @since 2006-2-2 /Y/UM3/
* @version 1.0 u]g%@3Pn
*/ )1Y{Q Y}l
public class InsertSort implements SortUtil.Sort{ *1ilkmL%
>,v`EIg
/* (non-Javadoc) eln)BW#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HSw;^E)1
*/ 2% MC Yn
public void sort(int[] data) { FVMD>=k
int temp; /{EP*,/*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E`kG-Q5Dw
} P:hBt\5B
} U2ohHJ``
} 6gkV*|U,e
/?wtF4
} nyX2|m&
FXpJqlhNv
冒泡排序: GiJ *Wp
Ozw.siD
package org.rut.util.algorithm.support; O+nEXS\rQ
jkQ*D(;p
import org.rut.util.algorithm.SortUtil; t^UxR@l<K|
ud63f`W]4
/** jqz ux[6{
* @author treeroot pD8+ 4;A
* @since 2006-2-2 L,HhbTRca
* @version 1.0 `A,-@`p
*/ gl~ecc
public class BubbleSort implements SortUtil.Sort{ Z< 1
rbul8(1h
/* (non-Javadoc) Z@yW bjE7Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]dF
,:8
*/ 9G9t" {
public void sort(int[] data) { ?Lx24*5%
int temp;
|{&{
for(int i=0;i for(int j=data.length-1;j>i;j--){ d}OTO10
if(data[j] SortUtil.swap(data,j,j-1); ,xw#NG6
} dydc}n
} .fn\]rUv
} FK^p")i
}
T5|qRlW
`b?R#:G
} Av$]|b
Vk`h2BV
选择排序: 5v[*:0p'
ajve~8/&
package org.rut.util.algorithm.support; :)8VdWg
Cw~q4A6'
import org.rut.util.algorithm.SortUtil; Vo4,@scG
pXtl
6K%
/** ^Xz@`_I
* @author treeroot W}nlRbN?
* @since 2006-2-2 50"pbzW
* @version 1.0 dSLU>E3g
*/ n"$jG:AQJ
public class SelectionSort implements SortUtil.Sort { R%Hi+#/dr-
+[Dx?XM
/* M+-*QyCFK
* (non-Javadoc) &C:IX\
* QfmJn((
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "N;`1ce
*/ ?K1/ <PE+
public void sort(int[] data) { "H2EL}3/]
int temp; ,1hxw<sNR
for (int i = 0; i < data.length; i++) { n#mA/H;wV
int lowIndex = i; =WyDp97@+
for (int j = data.length - 1; j > i; j--) { %Wg'i!?cB
if (data[j] < data[lowIndex]) { C:GK,?!Jn'
lowIndex = j; u+dLaVlLJ
} } FE>|1
} wDw[RW3
SortUtil.swap(data,i,lowIndex); N[?N5~jG
} Fzm*Pz3
} 8bxfj<O,
+u.1 ;qF
} \c,ap49RC
;i4Q|
Shell排序: rDl*d`He!
y@1+I~@
package org.rut.util.algorithm.support; 2{D{sa
85>05?
import org.rut.util.algorithm.SortUtil; JR'
q~
tz? T_
/** @efh{
* @author treeroot "_P;2N6
* @since 2006-2-2 8<5]\X
* @version 1.0 q$p%ZefZ
*/ w}L]X1#sF
public class ShellSort implements SortUtil.Sort{ Y2|#V#
^9m\=5d
/* (non-Javadoc) $': E\*ICb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ycc4W*]
*/ }q`ts=dlGt
public void sort(int[] data) { t9nqu!);
for(int i=data.length/2;i>2;i/=2){ [v7F1@6b
for(int j=0;j insertSort(data,j,i); wrviR
} -M~8{buxv
} ,aOl_o -&
insertSort(data,0,1); czA5n
} R$v[!A+:'
>~#yu&*D
/** PvzcEV
* @param data 9Q.rMs>qj
* @param j S
O4u9V
* @param i \@Ts+7%
*/ b`(}.r?W
private void insertSort(int[] data, int start, int inc) { -] LY,M
int temp; ?fiIwF)
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =MSr/ O2
} z-BXd
} \j+1V1t9
} iM AfJ-oN
)5rb&M}
} wYdb*"R
QFE:tBHe
快速排序: 6O|@xvg
vhe>)h*B
package org.rut.util.algorithm.support; 7z/|\D_{
w+C7BPV&
import org.rut.util.algorithm.SortUtil; O $LfuL
rr+|Zt
Y
/** V n7*JS
* @author treeroot vV6<^W:9F
* @since 2006-2-2 Sw:7pByjI
* @version 1.0 &[_g6OL
*/ H[{F'c[e
public class QuickSort implements SortUtil.Sort{ E8!e:l
=Q
d.3E[AJa(
/* (non-Javadoc) d<% z
1Dj2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B%"
d~5Y
*/ $}RJ,%~'x
public void sort(int[] data) { bG 7O
quickSort(data,0,data.length-1); O80<Z#%j`
} @>u]4Jn
private void quickSort(int[] data,int i,int j){ \@WDV
int pivotIndex=(i+j)/2; l2`s! ,<>O
file://swap "K ~
SortUtil.swap(data,pivotIndex,j); [V^WGW2oY
|"?M 1*g
int k=partition(data,i-1,j,data[j]); FI[A[*fi
SortUtil.swap(data,k,j); w&X<5'GM
if((k-i)>1) quickSort(data,i,k-1); ccB&O _
if((j-k)>1) quickSort(data,k+1,j); pSoiH<33
+GG9^:<yr
} [6 pD
/** pN!}UqfI-
* @param data 'ZT^PV\
* @param i 1Y/s%L
* @param j ATJWO1CtB
* @return XO`0>^g
*/ dpJ_r>NI
private int partition(int[] data, int l, int r,int pivot) { ?b*s.
^
do{ RdWRWxTn8+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d^Inb!%w
SortUtil.swap(data,l,r); ]|!OP
} F{Z~ R
while(l SortUtil.swap(data,l,r); }e!x5g
return l; rEv@YD
} 2gc/3*F8
U(a#@K!H
} .+qQYDEw
Fa?~0H/DL
改进后的快速排序: RwKdxK+;
Mc=$/ o
package org.rut.util.algorithm.support; OJ,`
3)8QS
import org.rut.util.algorithm.SortUtil; 34z"Pm
io _1Y]N
/** XnDUa3
* @author treeroot K:!"+q
* @since 2006-2-2 V\{clJ\U
* @version 1.0 ~s%
Md
*/ 'U1R\86M
public class ImprovedQuickSort implements SortUtil.Sort { ADS9DiX/
OSlvwH%(EE
private static int MAX_STACK_SIZE=4096; Y?S!8-z
private static int THRESHOLD=10; %Qc La//
/* (non-Javadoc) 6 2'j!"xv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >v:y?A,
*/
5Ec6),+&
public void sort(int[] data) { t=|evOz]
int[] stack=new int[MAX_STACK_SIZE]; (gy#js#
&{ay=Mj
int top=-1; 0":ib0=
int pivot; T29Dt
int pivotIndex,l,r; YX=a#%vrl
kv3E4,<9
stack[++top]=0; ?
K;dp
stack[++top]=data.length-1; sA/pVU
%oq{L]C(rf
while(top>0){ +Fuqchjq
int j=stack[top--]; 1|RANy
int i=stack[top--]; =5Q]m6-SgV
EwuO&q
pivotIndex=(i+j)/2; *194{ ep
pivot=data[pivotIndex]; jNTjSX
YwteZSbp6M
SortUtil.swap(data,pivotIndex,j); ZZk=E4aae
>{N9kWY
file://partition aAJU`=uq
l=i-1; OTy.VT|
r=j; C3eR)Yh
do{ ]j'p :v
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T@G?t0
SortUtil.swap(data,l,r); i'4B3
} J!0DR4=Xi
while(l SortUtil.swap(data,l,r); !6BW@GeF]
SortUtil.swap(data,l,j); ^=T$&gD
W"zab
if((l-i)>THRESHOLD){ xGu r
stack[++top]=i; |s"nM<ZNZ
stack[++top]=l-1; Nd`%5%'::
} qm./|#m>
if((j-l)>THRESHOLD){ EKA#|^Q:NX
stack[++top]=l+1; 5V6G=H
stack[++top]=j; =G]1LTI
} FB
_pw!z
s}j{#xT
} A9f)tqbc
file://new InsertSort().sort(data); 21
O'M
insertSort(data); .P;*D ws
} .uuO>:
/** 4xk|F'6K
* @param data uv=.2U46
*/ UF?H>Y&
private void insertSort(int[] data) { iTFdN}U
int temp; d\p,2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;gBRCZ
} FuVnk~gq
} v\!Be[ ?
} Y]NSN-t
afv~r>q(-
} B-.gI4xa
AmaT0tzJC
归并排序: M:-.o
<Fi%iA
package org.rut.util.algorithm.support; @W vatD
V
MNC*Glj=
import org.rut.util.algorithm.SortUtil; CsTF
0uWR<,]
/** bLe<G
* @author treeroot ,8:(OB|a
* @since 2006-2-2 >_o}
* @version 1.0 X *&[u7No
*/ ~;1l9^N|
public class MergeSort implements SortUtil.Sort{ ~KW,kyXBnD
Qj,]N@7
/* (non-Javadoc) 7[I}*3Q'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4kG,*3&2
*/ :,Pn3xl
public void sort(int[] data) { y=`2\L" O
int[] temp=new int[data.length]; N$h{Yvbn
mergeSort(data,temp,0,data.length-1); WKT4D}{1
} ])L
A42|
jqv- D
private void mergeSort(int[] data,int[] temp,int l,int r){ Tsgk/e9K2?
int mid=(l+r)/2; 2ggdWg7z
if(l==r) return ; 0o+6Q8q
mergeSort(data,temp,l,mid); ^SxY IFL
mergeSort(data,temp,mid+1,r); MP_'D+LS
for(int i=l;i<=r;i++){ K@#(*."
temp=data; '@p['#\uI
} v'VD0+3[H
int i1=l; &z>e5_.
int i2=mid+1; 6xWe=QGE
for(int cur=l;cur<=r;cur++){ ANJ$'3tg
if(i1==mid+1) :Qumb
data[cur]=temp[i2++]; >iD )eB
else if(i2>r) pV20oSJNt
data[cur]=temp[i1++]; MKy[hT:
else if(temp[i1] data[cur]=temp[i1++]; zY,r9<I8_x
else )6+eNsxMlC
data[cur]=temp[i2++]; >c9a0A
} nx8a$vI-TY
} PIH*Rw*GKZ
Z0 o~+Ct$
} /G5d|P
|_`E1Y}}
改进后的归并排序: R$[#+X!
h&`e) a>+
package org.rut.util.algorithm.support; Hz.(qW">5*
5$wpL(:R(
import org.rut.util.algorithm.SortUtil; y>72{
DTaN"{
/** 89\n;5'f4
* @author treeroot Ytz)d/3T
* @since 2006-2-2 zY|t0H
* @version 1.0 `0P$#5?
*/ #;%JT
public class ImprovedMergeSort implements SortUtil.Sort { s}jHl8
F'B8v3
private static final int THRESHOLD = 10; J]&y$?C
4F{)i
/* LM7$}#$R
* (non-Javadoc) `FYv3w2
* XVKfl3'%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qW!]co
*/ s<oNE)xe
public void sort(int[] data) { NR -!VJQ
int[] temp=new int[data.length]; %!du,2
mergeSort(data,temp,0,data.length-1); ^@qvl%j
} Y}uCP1v
*d"DA[(
private void mergeSort(int[] data, int[] temp, int l, int r) { +m8!U=Zi
int i, j, k; &_~+(
int mid = (l + r) / 2; m|=H#
if (l == r) q{t*34R
return; NX|v=
if ((mid - l) >= THRESHOLD) [k6nW:C
mergeSort(data, temp, l, mid); [ {
bV4
else ADpmvW f?
insertSort(data, l, mid - l + 1); du)~kU>l
if ((r - mid) > THRESHOLD) jBU4F~1y
mergeSort(data, temp, mid + 1, r); M@?xa/E64
else p;W.lcO`0
insertSort(data, mid + 1, r - mid); DdVF,
kAu+zX>S+
for (i = l; i <= mid; i++) { pek%08VSEU
temp = data; wi4=OU1L)a
} 1RK=,Wx
for (j = 1; j <= r - mid; j++) { ?r?jl;A&
temp[r - j + 1] = data[j + mid]; UN zlN
} -5T=:2M
int a = temp[l]; iVd.f
A
int b = temp[r]; (cN}Epi(D
for (i = l, j = r, k = l; k <= r; k++) { c05 %iv
if (a < b) { rk7QZVE
data[k] = temp[i++]; R,|d`)T
a = temp; G(~;]xNW+
} else { r8,romE$
data[k] = temp[j--]; x\J#]d.
b = temp[j]; /\H>y
} r=6v`)Qr
} w~
[b*$
} 'A:x/iv}^
DqX{'jj
/** h=(DX5:A
* @param data
F0:A]`|
* @param l I =1+h
* @param i :dLAs@z
*/ ds&e|VSH;
private void insertSort(int[] data, int start, int len) { ]ut5S>,"
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `&-Mi[1
} 8G oh4T H
} 3"G>>nC&
} 8HR mQ
} e0J6Ae4V[
z,VD=Hnz
堆排序: LrATSq@
Ma+$g1$
package org.rut.util.algorithm.support; bks/`rIA
"m ^'
&L
import org.rut.util.algorithm.SortUtil; ^`G`phd$
TEMw8@b
/** 1P(|[W1
* @author treeroot ,}:G\u*Fu
* @since 2006-2-2 wbe<'/X+
* @version 1.0 2 ho>eRX
*/ )=-0M9e.{
public class HeapSort implements SortUtil.Sort{ J]q%gcM
7{xh8#m
/* (non-Javadoc) k<cgO[m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #hlCs
*/ ^k
Cn*&
public void sort(int[] data) { aM{xdTYaU
MaxHeap h=new MaxHeap(); &m[Qn!>i6
h.init(data); WyZL9K{?
for(int i=0;i h.remove(); r)i>06Hd
System.arraycopy(h.queue,1,data,0,data.length); PI*82,f3dE
} &R$CZU
@fa@s-wb
private static class MaxHeap{ j~FD{%4N
STglw-TC\
void init(int[] data){ 3LfC{ER
this.queue=new int[data.length+1]; in(U:04
for(int i=0;i queue[++size]=data; zLF?P3^
fixUp(size); m~dC3}e8/?
} 8@PX7!9
} TARXx>
(%U@3._
private int size=0; E"L2&.
1Jj Y!
private int[] queue; CEC
nq3
YFTjPBV
public int get() { ;r6jx"i
return queue[1]; tw(JZDc
} [2dn\z28
HFq m6|
public void remove() { 4<x'ocKlD
SortUtil.swap(queue,1,size--); /'hC i]b@v
fixDown(1); \T;\XAGr
} ru`U'
file://fixdown 9W8]8sUeG
private void fixDown(int k) { %J8|zKT5t
int j; <&!v1yR
while ((j = k << 1) <= size) { 7Su#Je]
if (j < size %26amp;%26amp; queue[j] j++; *A~
G_0B
if (queue[k]>queue[j]) file://不用交换 ;3
F"TH
break; >+mD$:L
SortUtil.swap(queue,j,k); )NO<s0?&
k = j; MgC:b-&5_
} T<I=%P)
} m] W5+
private void fixUp(int k) { cS. -7
while (k > 1) { !gLkJ)
int j = k >> 1; dVQ-k
if (queue[j]>queue[k]) RID]pek
break; fl;s9:<
SortUtil.swap(queue,j,k); jA(>sz
k = j; zSE<"(a
} :=9] c17=
} }'OHE(s
fRfn2jA)d
} .^bft P\
5qf
BEPJ
} zvvP81$W
;r/;m\V
SortUtil: =E&OuX-R
'SYo_!
package org.rut.util.algorithm;
[|~2X>
9z
I.pv+]
import org.rut.util.algorithm.support.BubbleSort; `y+-H|%?
import org.rut.util.algorithm.support.HeapSort; WO6/X/#8b
import org.rut.util.algorithm.support.ImprovedMergeSort; Lw'9
import org.rut.util.algorithm.support.ImprovedQuickSort; bT6sb#"W
import org.rut.util.algorithm.support.InsertSort; )XfzLF7
import org.rut.util.algorithm.support.MergeSort; J>^\oAgpE
import org.rut.util.algorithm.support.QuickSort; f""`cdqAOh
import org.rut.util.algorithm.support.SelectionSort; ms_ VM>l
import org.rut.util.algorithm.support.ShellSort; `+#G+Vu5
xBFJ} v
/** a,Gxm!
* @author treeroot %hN.ktZ/s
* @since 2006-2-2 zd]D(qeX
* @version 1.0 TrdZJ21#M
*/ {u[V{XIUh
public class SortUtil { %Rh;=p`
public final static int INSERT = 1; -AYA~O(&
public final static int BUBBLE = 2; !WkIi^T
public final static int SELECTION = 3; 3@n>*7/E
public final static int SHELL = 4; &/A8-:m
public final static int QUICK = 5; 1G7b%yPA
public final static int IMPROVED_QUICK = 6; < pTTo
public final static int MERGE = 7; 3jogD
public final static int IMPROVED_MERGE = 8; E1&b#TE6O
public final static int HEAP = 9; rtQHWRUn
0GDvwy D1
public static void sort(int[] data) { .P$IJUYO
sort(data, IMPROVED_QUICK); I5AO?BzJ
} T<-=nX
private static String[] name={ ?4CNkk=v
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Cv)/7vyB8
}; (]*H[)F/
q4UA]+-*
private static Sort[] impl=new Sort[]{ =N);v\ Q$!
new InsertSort(), O9(r{Vu7u
new BubbleSort(), `Y40w#?uW
new SelectionSort(), 0)m8)!gj
new ShellSort(), LwuF0\
new QuickSort(), .bD_R7Bi6
new ImprovedQuickSort(), U Q@7n1
new MergeSort(), YHV-|UNF
new ImprovedMergeSort(), (!5LW'3B
new HeapSort() K~RoUE<3[
}; /?/#B `
B`$L'
public static String toString(int algorithm){ +KEkmXZ
return name[algorithm-1]; E^ hHH?w+
} k#}g,0@
H ftxS
public static void sort(int[] data, int algorithm) { !5}l&7:(MN
impl[algorithm-1].sort(data); JIO$=+p
} #(LfYw.P1V
O;[9_[
public static interface Sort { dz#5q-r
public void sort(int[] data); kHc<* L_V
} %OcGdbs
Oq(VvS/
public static void swap(int[] data, int i, int j) {
he+#Q6
int temp = data; _kFYBd
data = data[j]; l_/C65%.:
data[j] = temp; qJR!$?
} iO1nwl !#
} aH_6s4+: