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。 *6q8kQsz^1
插入排序: Yk:fV &]
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package org.rut.util.algorithm.support; oFHVA!lqe
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import org.rut.util.algorithm.SortUtil; J~DP*}~XK
/** 7~eo^/PbS
* @author treeroot -^$CGRE6A
* @since 2006-2-2 bP Er+?fu
* @version 1.0 brNe13d3~"
*/ /[GOs*{zB
public class InsertSort implements SortUtil.Sort{ f3V&i)w(
z>&Py(
/* (non-Javadoc) #:vos VqG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WMZa6cH
*/ =q^o6{d0"
public void sort(int[] data) { =5%jKHo+9z
int temp; ~5`rv1$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g 6>RyjN
} }`IN5NdYp
} ,<|EoravH
} eP'e_E
nPfVZGt
} <hdR:k@#
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冒泡排序: )wpBxJ;dB}
/+sn-$/"i
package org.rut.util.algorithm.support; rc*3k
5gGYG]*l
import org.rut.util.algorithm.SortUtil; v.cB3/$z
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/** c"H4/,F
* @author treeroot GfJm&'U&
* @since 2006-2-2 0X0HDQ
* @version 1.0 /zuU
*/ WaN0$66[:
public class BubbleSort implements SortUtil.Sort{ d<V+;">2
"a5?cX;
/* (non-Javadoc) 7u!R 'D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (bH "x
*/ 2j4VW0:
public void sort(int[] data) { f>waFu-
int temp; {;Mcor3
for(int i=0;i for(int j=data.length-1;j>i;j--){ .+ai
dWd
if(data[j] SortUtil.swap(data,j,j-1); 88pz<$
} /Rx%}~x/m
} t{!}^{
"5
} emw3cQ
} E^1uZI\z
RX=C)q2c
} !F;W#Gc
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选择排序: uc=-+*D'I
X LA
package org.rut.util.algorithm.support; W5_t/_EWD
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import org.rut.util.algorithm.SortUtil; #rzxFMA"
a%;$l_wVT:
/** *J8j_-i,R
* @author treeroot 2y
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* @since 2006-2-2 rNfua
* @version 1.0 0}PW?t76
*/ K^A\S
public class SelectionSort implements SortUtil.Sort { n9t8RcJS:
4zpprh+`K
/* /r[0Dw
* (non-Javadoc) 'e7<&wm ia
* 8Th|'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A37Z;/H~k
*/ twNZ^=S Gr
public void sort(int[] data) { 1-r1hZ-
int temp; ]8d]nftY
for (int i = 0; i < data.length; i++) { zJ3{!E}`v
int lowIndex = i; &Zd{ElM
for (int j = data.length - 1; j > i; j--) { m,Q<4'
if (data[j] < data[lowIndex]) { H:,rNaz7D^
lowIndex = j; jp=^$rS6[
} x?va26FV
} bH3-#mw5w
SortUtil.swap(data,i,lowIndex); ?%;7k'0"
} mZ7.#R*}
} lmj73OB3
{\;CGoN|
} Gow_a'
*vCJTz
Shell排序: E:&=A 4%
R\A5f\L9
package org.rut.util.algorithm.support; iW-w?!>|m
2[r#y1ro
import org.rut.util.algorithm.SortUtil; k
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d=xU
f`^
/** O6Xu/X]
* @author treeroot 4}W*,&_
* @since 2006-2-2 #&1mc_`/
* @version 1.0 ,D+pGxbr
*/ h[ba$S,T
public class ShellSort implements SortUtil.Sort{ z1T.\mzfX
$w)yQ %
/* (non-Javadoc) Rl.3p<sX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SEIGs_^'\
*/ Q;)[~p
public void sort(int[] data) { 'F5&f9A
for(int i=data.length/2;i>2;i/=2){ 8nt:peJ$+
for(int j=0;j insertSort(data,j,i); #)GL%{Oa
} -+Kx^V#'R
} +sQ=Uw#e
insertSort(data,0,1); "sUL"i
} w%S\)wjS
[,8@oM#
/** >y(;k|-$
* @param data nP0|nPWz#
* @param j O<Ht-TN&
* @param i ou6yi;
l%
*/ @4sv(HyDY
private void insertSort(int[] data, int start, int inc) { (05/}PhB`
int temp; 2%. A{!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pu0IhDMn
} 3-lJ] 7OT
} S'9T>&<Kn
} ['tGc{4
Cc$!TZq=
} {tOu+zy
R',Q)<
快速排序: ,=Xr'7w,
*6df|q
package org.rut.util.algorithm.support; O:{I9V-=>s
k_
UY^vz.
import org.rut.util.algorithm.SortUtil; Ra%RcUf~sh
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/** (5cc{zKtR
* @author treeroot 8jMw7ti
* @since 2006-2-2 %qV=PC
* @version 1.0 4sP0oe[h
*/ PL@hsZty~c
public class QuickSort implements SortUtil.Sort{ vCb3Ra~L`
X#Y0g`muW
/* (non-Javadoc) =XzrmPu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \v)Dy)Vhg2
*/ QpBgG~h"
public void sort(int[] data) { &;&i#ZO
quickSort(data,0,data.length-1); (]w_}E]N
} Oq7M1|{
private void quickSort(int[] data,int i,int j){ "4<RMYQ
int pivotIndex=(i+j)/2; Qo4]_,kR
file://swap po4seW!
SortUtil.swap(data,pivotIndex,j); Yev] Lp
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int k=partition(data,i-1,j,data[j]); P%8
Gaa=
SortUtil.swap(data,k,j); sG=D(n1
if((k-i)>1) quickSort(data,i,k-1); AA6_D?)vv
if((j-k)>1) quickSort(data,k+1,j); 5k)QjZo
a:r8Jzr
} f-F+Y`P
/** 3=RV Jb
* @param data =ps3=D
* @param i 9.{u2a\
* @param j ({v$!AAv
* @return ^
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*/ B5GT^DaT
private int partition(int[] data, int l, int r,int pivot) { JF!JY( U,
do{ Ew5(U`]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j1Fy'os"!
SortUtil.swap(data,l,r); uUB,OmLN
} v*Ds:1"H-I
while(l SortUtil.swap(data,l,r); Dq/_^a/1
return l; v8Vw.Ce`f
} N7Kq$G2O
9]< p
} Se.\wkl#Y
#k&"Rv;,
改进后的快速排序: {_&'tXL
i ?&t@"'
package org.rut.util.algorithm.support; twv|,kM
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import org.rut.util.algorithm.SortUtil; =
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/** IppzQ0'=y1
* @author treeroot Ls< ";QJc
* @since 2006-2-2 b`){f\#t
* @version 1.0 Y~gDS^8
*/ #?\$*@O
public class ImprovedQuickSort implements SortUtil.Sort { 6i|5`ZO
AFE6@/'
private static int MAX_STACK_SIZE=4096; i8iv{e2
private static int THRESHOLD=10; Q97F5ru6
/* (non-Javadoc) "
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \UA\0p
*/ 'w3BSaJi
public void sort(int[] data) { $0$'co"
int[] stack=new int[MAX_STACK_SIZE]; Yv<'QC
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int top=-1; PP)iw@9j
int pivot; QK% Nt
int pivotIndex,l,r; 5$f
vI#NO<
Uc%n{
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stack[++top]=0; %IrR+f+H
stack[++top]=data.length-1; eRU0gvgLu"
p4mi\~Q
while(top>0){ 4wYD-MB
int j=stack[top--]; <Hd8Jd4f
int i=stack[top--]; vUm#^/#I
'D`O4TsP>
pivotIndex=(i+j)/2; 'NJGez'b,
pivot=data[pivotIndex]; j5Kw0Wy7
ZByxC*Cz
SortUtil.swap(data,pivotIndex,j); !"1}zeve
B7PkCS&X
file://partition KYE)#<V}@
l=i-1; 1 aWzd[i
r=j; $J6 Pv
do{ PD #9Z=Hj
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Dl=9<:6FW
SortUtil.swap(data,l,r); =og>& K
} 8T6LD
while(l SortUtil.swap(data,l,r); ^*sDJ #
SortUtil.swap(data,l,j); g)0>J
~o{GQ>
if((l-i)>THRESHOLD){ F.{{gpI
stack[++top]=i; < z':_,
stack[++top]=l-1; V"Cx5#\7C
} kY>jp@wV
if((j-l)>THRESHOLD){ mzw`{Oy>L
stack[++top]=l+1; e&~vO| 3w%
stack[++top]=j; ]oT8H?%*Y
} Dzd[<Qln
KLb"_1z
} di.yh3N$
file://new InsertSort().sort(data); -R%T Dx
insertSort(data); 9mE6Cp.Wv
} =MR.*m{
/** MoAie|MKe
* @param data 1oKF-";u(
*/ .8o?`
private void insertSort(int[] data) { *vy^=Yea
int temp; f3yH4r?;w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /x%h@Cn!
} C@x\ZG5rA
} gB7kb$J
} BF^dNgn+%K
G^r`)ND
} m(>MP/
UY>[
归并排序: [U5@m]>^
JJ:p A_uX
package org.rut.util.algorithm.support; SjosbdD
rX7GVg@H
import org.rut.util.algorithm.SortUtil; 5D]3I=kj
ak,KHA6u
/** ^aG$9N<\
* @author treeroot e
p jb
* @since 2006-2-2 7e NLs
* @version 1.0 n[S-bzU^t
*/ \;XDPC j
public class MergeSort implements SortUtil.Sort{ VSx9aVPkC
6ZO6O=KD
/* (non-Javadoc) In[rxT~K}Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J.EBt3
*/ G]]"Jc
public void sort(int[] data) { n!aA<
int[] temp=new int[data.length]; P"(VRc6x
mergeSort(data,temp,0,data.length-1); (@DqKB
} !S.O~Kq
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8H'ybfed
int mid=(l+r)/2; DCsamOA~
if(l==r) return ; ZLjEH7
mergeSort(data,temp,l,mid); SFu]*II;{
mergeSort(data,temp,mid+1,r); FR9w0{o
for(int i=l;i<=r;i++){
HNJR&U t
temp=data; @4t_cxmD
} W
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int i1=l; 4,,DA2^!
int i2=mid+1; %p48=|+
for(int cur=l;cur<=r;cur++){ _sb~eB~<(
if(i1==mid+1) i:a*6b.U@N
data[cur]=temp[i2++]; -Oi8]Xw^@y
else if(i2>r) @T"-%L8PL
data[cur]=temp[i1++]; [psZc'q
else if(temp[i1] data[cur]=temp[i1++]; lRk_<A
else LR "=(
data[cur]=temp[i2++]; DsB30
} z!M #
} j.&Y'C7GOC
q+znb'i-x
} {q/;G!ON.S
.@Lktc
改进后的归并排序: wBWqibY|
nt]'>eX_}
package org.rut.util.algorithm.support; sYq:2Wn>8Q
{#.<hPXn
import org.rut.util.algorithm.SortUtil; w%?Zb[!&
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^%
/** 2 \<u;9
* @author treeroot PNz]L
* @since 2006-2-2 O$n W
* @version 1.0 y6dQ4Whv&
*/ {Rdh4ZKh
public class ImprovedMergeSort implements SortUtil.Sort { g~ii^[W
!kG |BJ$j
private static final int THRESHOLD = 10; ih|;H:"^
=]r2;014
/* !}5f{,.RO
* (non-Javadoc) xHCdtloi?I
*
_!_^B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <PFF\NE9
*/ ? 'qyI^m@
public void sort(int[] data) { dVPY07P
int[] temp=new int[data.length]; d
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mergeSort(data,temp,0,data.length-1); a/v]E]=qI
} F( 4Ue6R
m^\&v0
private void mergeSort(int[] data, int[] temp, int l, int r) { id588Y78
int i, j, k; aX~Jk >a0
int mid = (l + r) / 2;
0~z`>#W,
if (l == r) mrq,kwM
return; YV _ 7 .+A
if ((mid - l) >= THRESHOLD) `T+w5ONn
mergeSort(data, temp, l, mid); bSz@@s.
else =]5f\f6
insertSort(data, l, mid - l + 1); q9H\ $
if ((r - mid) > THRESHOLD) kdWUz(
mergeSort(data, temp, mid + 1, r); !g`I*ZE+e
else ie11syhV"
insertSort(data, mid + 1, r - mid); o*artMkG
oB%_yy+
for (i = l; i <= mid; i++) { hj&~Dn(
temp = data; n!.=05OtX
} Y]*&\Ex"\
for (j = 1; j <= r - mid; j++) { d``wx}#Uk
temp[r - j + 1] = data[j + mid]; Q lA?dXQ
} CPL,QVO9
int a = temp[l]; Q)y5'u qZ
int b = temp[r]; dF09_nw
for (i = l, j = r, k = l; k <= r; k++) { :5['V#(o
if (a < b) { 98)C
7N'
data[k] = temp[i++]; yf;TIh%)=
a = temp; <[D>[
} else { 7p hf
data[k] = temp[j--]; hkyO_ns
b = temp[j]; H]
g=(
%ok
} 7R7+jL,
} *Wvk~
} r{t6Vv2J
6bc\
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/** \EU^`o+
* @param data Y8^WuN$
* @param l zH Z;Y^{+
* @param i _yUYEq<`
*/ >d=pl}-kOQ
private void insertSort(int[] data, int start, int len) { -Ci&h
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ll-QhcC$
} #AB5}rPEI
} ;gZ/i93:Q
} +}M3O]?4
} ;x2o|#`b
g`Cv[Pq?at
堆排序: <G|i5/|7
N6of$p'N
package org.rut.util.algorithm.support; ^e <E/j{~
;@Fb>lBhX
import org.rut.util.algorithm.SortUtil; 8Z_ 4%vUBg
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/** +-(,'slov
* @author treeroot 4bp})>}jB
* @since 2006-2-2 '2i !RT-
* @version 1.0 ^9Cu?!xu0
*/ A7%/sMv
public class HeapSort implements SortUtil.Sort{ 'Etq;^H
(xN1?qXB.
/* (non-Javadoc) 2_)UHTwsK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F[$cE
*/ Osm))Ua(
public void sort(int[] data) { d"miPR
MaxHeap h=new MaxHeap(); kE.4 #
h.init(data); GM'yOJo
for(int i=0;i h.remove(); __Ksn^I
System.arraycopy(h.queue,1,data,0,data.length); "O0xh_Nr
} 8{/.1:
D>7J[ Yxg-
private static class MaxHeap{ J{prI;]K
kyvl>I0q@
void init(int[] data){ |%F,n2
this.queue=new int[data.length+1]; ]uypi#[
for(int i=0;i queue[++size]=data; (DY[OIHI
fixUp(size); Xpn\TD<_I
} [2Zy~`*y{
} Wh| T3&
/z4c>)fV
private int size=0; Y8]@y0(
2vLun
private int[] queue; 72"H#dy%U
;h+~xxu=X
public int get() { [RN]?,
return queue[1]; 5|*`} ;/y
} N'9T*&o+
z8awND
public void remove() { <\ <o#Vq
SortUtil.swap(queue,1,size--); C$PS@4'U
fixDown(1); wB[f%mHs
} oC49c~`8
file://fixdown -u'"l(n)~
private void fixDown(int k) { S<Gm*$[7
int j; ^M6lF5
while ((j = k << 1) <= size) { ?..BA&zRk
if (j < size %26amp;%26amp; queue[j] j++; &xN+a{&
if (queue[k]>queue[j]) file://不用交换 QJ4$) Fr(
break; `3i>e<m~
SortUtil.swap(queue,j,k); <MkvlLu((o
k = j; Vez8~r3
} N;'c4=M~(
} jK]1X8
private void fixUp(int k) { 2{63:f1c`'
while (k > 1) { 0jlM~ H
int j = k >> 1; n.2:fk
if (queue[j]>queue[k]) j\~,Gtn>Z
break; =FhP$r*
SortUtil.swap(queue,j,k); \8QOZjy
k = j; ?l?l<`sTO
} czD"mI!
} 2I }p X9
,7Hyrx`
} <n]P D;.4
v;o1c44;
} k Alxm{
}rfikm
SortUtil: "Mj#P9
Ge-Bk)6
package org.rut.util.algorithm; >lUPOc
VnsV&cx
import org.rut.util.algorithm.support.BubbleSort; v
f{{z%3T
import org.rut.util.algorithm.support.HeapSort; ?PMbbqa0
import org.rut.util.algorithm.support.ImprovedMergeSort; +`k30-<P
import org.rut.util.algorithm.support.ImprovedQuickSort; 3PU_STSix
import org.rut.util.algorithm.support.InsertSort; /"?DOsJ.
import org.rut.util.algorithm.support.MergeSort; W<prY
import org.rut.util.algorithm.support.QuickSort; 8(\}\4G_
import org.rut.util.algorithm.support.SelectionSort; s<F*kLib
import org.rut.util.algorithm.support.ShellSort; uW!XzX['
MmjZq
/** lxL.ztL
* @author treeroot ^%9oeT{
* @since 2006-2-2 /Rq\Mgb
* @version 1.0 dE_Xd:>
*/ N:| :L:<1
public class SortUtil { ~ h3G}EH
public final static int INSERT = 1; ?<!qF:r:
public final static int BUBBLE = 2; 3 Vc}Q'&Y
public final static int SELECTION = 3; rV%T+!n%c
public final static int SHELL = 4; 6[A\cs
public final static int QUICK = 5; mEd2f^R
public final static int IMPROVED_QUICK = 6; 8eS(gKD
public final static int MERGE = 7; Fk/I
(Q
public final static int IMPROVED_MERGE = 8; ZgxB7zl//
public final static int HEAP = 9; apk,\L@sZ
T(*,nJi~9
public static void sort(int[] data) { xjo`u:BH
sort(data, IMPROVED_QUICK); Deh3Dtg/k
} /"g Ryv
private static String[] name={ 80@\e
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bgm8IK)6
}; a(A~S u97
/\/^= j
private static Sort[] impl=new Sort[]{ |?^<=%
new InsertSort(), /Pg)7Zn
new BubbleSort(), r/!,((Z\
new SelectionSort(), n]IF`kYQV
new ShellSort(), }Kgi!$<aQx
new QuickSort(), ~o^| >]
new ImprovedQuickSort(), d,(y$V+
new MergeSort(), CwX?%$S
new ImprovedMergeSort(), G)?*BH
new HeapSort() J.1c,@
}; R
xITMt
\yJ
4+vo2Q
public static String toString(int algorithm){ +QFKaS<sn
return name[algorithm-1]; !+PrgIp>
} ISpV={$Zd
y5j:+2|I
public static void sort(int[] data, int algorithm) { :.*Q@X}-I
impl[algorithm-1].sort(data); Zt3sU_
} a|u#w~
ZTzec zXpQ
public static interface Sort { 9<_hb1'
public void sort(int[] data);
+x
3x
} gLv+L]BnhH
aA|{r/.10K
public static void swap(int[] data, int i, int j) { %[p*6&V
int temp = data; `}),wBq
data = data[j]; zVS{X=u
data[j] = temp; g9pKoi|\E
} <\^o
} crIF5^3Yby