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。 O0:q;<>z
插入排序: dWW.Y*339
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package org.rut.util.algorithm.support; 7$#u
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import org.rut.util.algorithm.SortUtil; xx $cnG
/** BLFdHB.$T
* @author treeroot 8,|k ao:
* @since 2006-2-2 ';"VDLb3
* @version 1.0 eH,or ,r
*/ A(X KyEx
public class InsertSort implements SortUtil.Sort{ j1Ezf=N6`
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/* (non-Javadoc) a.Vuu)+Quw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5 -qZ{W
*/ <naz+QK'
public void sort(int[] data) { [B3RfCV{
int temp; SWLo|)@[/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZC8wA;!z^
} ,u m|1dh
} )}vl\7=
} kT=8e;K
lx i<F
} [ hsds\
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冒泡排序: P~dcW
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package org.rut.util.algorithm.support; z%kULTL
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import org.rut.util.algorithm.SortUtil; R-Sym8c
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/** S>{~nOYt-`
* @author treeroot =c7;r]Ol
* @since 2006-2-2 V8(-
* @version 1.0 /RF7j;
*/ IA(5?7x`<
public class BubbleSort implements SortUtil.Sort{ 7z-[f'EIUI
^Dx&|UwiZa
/* (non-Javadoc) _cwpA#x`}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;kK/_%gN-G
*/ QW"! (`K
public void sort(int[] data) { Pz^544\~ou
int temp; 4P0}+
for(int i=0;i for(int j=data.length-1;j>i;j--){ _B0L.eF
if(data[j] SortUtil.swap(data,j,j-1); ?Ob3tUz2
} Ss`LLq0LO
} _f{{( 7
} Xr{v~bf
} r*Xuj=
28nFRr
} SAz
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选择排序: Mp]rUPK
pJ{Y
lS{
package org.rut.util.algorithm.support; < vP=zk
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import org.rut.util.algorithm.SortUtil; .^g p?
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/** +h$
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* @author treeroot _-\#i
* @since 2006-2-2 cZ06Kx..
* @version 1.0 W8<%[-r
*/ ,vDbp?)'U
public class SelectionSort implements SortUtil.Sort { d'2A,B~_*
liSmjsk
/* w>YDNOk
* (non-Javadoc) <uJ@:oWG7
* |g~ZfnP_%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \DzGQ{`~m
*/ `x|?&Ytmf9
public void sort(int[] data) { +n)9Tz5
int temp; (#'>(t(4
for (int i = 0; i < data.length; i++) { <}LC~B!
int lowIndex = i; ;PH~<T
for (int j = data.length - 1; j > i; j--) { #1[u(<AS
if (data[j] < data[lowIndex]) { rs.)CMk53
lowIndex = j; =T_g}pu
} BuwY3F\-O
} Xeajxcop#
SortUtil.swap(data,i,lowIndex); [gB+C84%%
} #b`ke/P
} fZ. ONq
*](iS
} 7Ix973^
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Shell排序: $u.z*b_yy
D]}G.v1
package org.rut.util.algorithm.support; {8OCXus3m
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import org.rut.util.algorithm.SortUtil; AR=]=8
kP"9&R`E
/** ceV}WN19l
* @author treeroot VE24ToI?W"
* @since 2006-2-2 5m*,8 ]!-
* @version 1.0 =Uh$&m
*/ ^s=8!=A(
public class ShellSort implements SortUtil.Sort{ RpF&\x>
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/* (non-Javadoc) KSvE~h[#+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@Oqm> ]SS
*/ TNth
public void sort(int[] data) { ..qCPlK;
for(int i=data.length/2;i>2;i/=2){ pFXEu=$3
for(int j=0;j insertSort(data,j,i); Y7aqO5
} /NlGFO*Z
} yw!{MO
insertSort(data,0,1); ]3gSQ7
} Qd-A.{[h
99S^f:t
/** dscgj5b1~
* @param data P%6~&woF
* @param j [~^0gAlQC
* @param i <!+Az,-
*/ T|p"0b A
private void insertSort(int[] data, int start, int inc) { yZRzIb_
int temp; ~`/V(r;o
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "{n&~H`
} ^_6|X]tz1T
} /mMV{[
} :svqE+2
g{Rd=1SK]
} OPi0~s
,>M[@4`,U
快速排序: U17d>]ka
G3 m Z($y
package org.rut.util.algorithm.support; P3%5?.S
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import org.rut.util.algorithm.SortUtil; %$I;{-LD
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/** %*U'@r(A
* @author treeroot 9z0p5)]n>
* @since 2006-2-2 phK/
* @version 1.0 |zU-KGO&
*/ _&x%^&{
public class QuickSort implements SortUtil.Sort{ C}X\|J
#QPjkR|\
/* (non-Javadoc) qLCR] _*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p 'k0#R$
*/ -} +[
public void sort(int[] data) { u!s2BC0}N
quickSort(data,0,data.length-1); ~@!bsLSMU
} I|OoRq
private void quickSort(int[] data,int i,int j){ R/_&m$ZB
int pivotIndex=(i+j)/2; %C0Dw\A*:
file://swap B[}6-2<>?C
SortUtil.swap(data,pivotIndex,j); H.;Q+A,8^
B1gR5p 0
int k=partition(data,i-1,j,data[j]); E@\e$?*X
SortUtil.swap(data,k,j); LscGTs,
if((k-i)>1) quickSort(data,i,k-1); GB^B r6
if((j-k)>1) quickSort(data,k+1,j); 5tnlrqC
i1085ztN
} H::bwn`Vc
/** CAlCDfKW}
* @param data us.~G
* @param i +_`7G^U?%
* @param j vIvIfE
* @return Y@v>FlqI{
*/ YQ}o?Q$z
private int partition(int[] data, int l, int r,int pivot) { *hrvYil2b
do{ teP<!RKNb
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t7pFW^&
SortUtil.swap(data,l,r); C^){.UGmJ
} /}$+uBgJm
while(l SortUtil.swap(data,l,r); hb-%_c"kq
return l; x38QD;MT
} b$7 +;I;
uO**E-`
} DH=hH&[e(d
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改进后的快速排序: [ )F<V!
N#]ypl
package org.rut.util.algorithm.support; f^e)O$N9]
y}
'@R$
import org.rut.util.algorithm.SortUtil; `XKLU
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/** "tZe>>I
* @author treeroot K:M8h{Ua
* @since 2006-2-2 =D(j)<9$A
* @version 1.0 WxDh;*am:
*/ AX INThJ
public class ImprovedQuickSort implements SortUtil.Sort { ]|@^1we
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private static int MAX_STACK_SIZE=4096; <q836]aaA
private static int THRESHOLD=10; XZf$K _F&M
/* (non-Javadoc) jdN`mosJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YUb_y^B^
*/ T|$H#n}
public void sort(int[] data) { {:s f7
int[] stack=new int[MAX_STACK_SIZE]; #mT"gs
`^vE9nW7
int top=-1; km(Po}
int pivot; Wqnc{oq|$
int pivotIndex,l,r; Sz~OX6L
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stack[++top]=0; +q4O D$}
stack[++top]=data.length-1; [^)g%|W
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while(top>0){ wkq 66?
int j=stack[top--]; .}t
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int i=stack[top--]; 9$t(&z=
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pivotIndex=(i+j)/2; e.C)jv6qr
pivot=data[pivotIndex]; x2EUr,7
F
[M,]?
SortUtil.swap(data,pivotIndex,j); K9[UB
siaG'%@*r
file://partition Gt1U!dP
l=i-1; PCvWS.{
r=j; 1\Xw3prH
do{ pmM9,6P4@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z;i:](
SortUtil.swap(data,l,r); Dv"9qk
} W!X@
while(l SortUtil.swap(data,l,r); |4JEU3\$
SortUtil.swap(data,l,j); 45e~6",
sB</DS
if((l-i)>THRESHOLD){ XSDpRo
stack[++top]=i; Y73C5.dNcE
stack[++top]=l-1; :h$$J
lP
} 0f/<7R
if((j-l)>THRESHOLD){ s1rCpzK0
stack[++top]=l+1; pRqx`5 }
stack[++top]=j; ixFi{_
} .8R@2c`}Cs
D-c4EV
} PsYpxNr
file://new InsertSort().sort(data); 9p/Bh$vJ
insertSort(data); rsQtMtS2
} -"`=1l
/** 3mgD(,(^
* @param data =&]L00u.
*/ ^ c<Ve'-
private void insertSort(int[] data) { Wri<h:1
int temp; bsX[UF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 53D]3
} E.TAbD&5(
} ,2q-D&)\Z
} 2:kH[#
Ie_wHcM<
} +R &gqja
paK2xX8E
归并排序: *T/']t
#4PN"o@
package org.rut.util.algorithm.support; w}KkvP^
wz%-%39q%
import org.rut.util.algorithm.SortUtil; qna8|3eP
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/** L_T5nD^D
* @author treeroot
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* @since 2006-2-2 M-71 1|eGI
* @version 1.0 #] QZ
*/ wj,=$RX
public class MergeSort implements SortUtil.Sort{ +whDU2 "
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/* (non-Javadoc) <YY 14p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #a6iuO0I
*/ $mI Loy
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public void sort(int[] data) { !zo{tI19
int[] temp=new int[data.length]; a9gLg
&
mergeSort(data,temp,0,data.length-1); CrLrw T
} ^sw?gH*
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private void mergeSort(int[] data,int[] temp,int l,int r){ 0S"MC9beg
int mid=(l+r)/2; ~Y;*u]^
if(l==r) return ; #mF"1QW
mergeSort(data,temp,l,mid); K-4PI+qQ\
mergeSort(data,temp,mid+1,r); _b 0&!l<
for(int i=l;i<=r;i++){ 6Oq7#3]
temp=data; UNYqft4
} #e"[^_C@!
int i1=l; "sTRS*
int i2=mid+1; )8AXm
for(int cur=l;cur<=r;cur++){ @]j1:PN-
if(i1==mid+1) A"]YM'.
data[cur]=temp[i2++]; rp$'L7lrX
else if(i2>r) V`- 9m$
data[cur]=temp[i1++]; !g[Zfo2r"
else if(temp[i1] data[cur]=temp[i1++]; >7|VR:U?B
else c)J%`i$
data[cur]=temp[i2++]; TbU#96"~.
} *wearCPeJ
} &~CI<\o P
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} 7#Ft|5$~q
!0+JbZ<%r|
改进后的归并排序: 'L'R9&o<X
5!
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package org.rut.util.algorithm.support; 6Mf0`K
?9/G[[(
import org.rut.util.algorithm.SortUtil; sRs>"zAg
dV_G1'
/** ?`s8 pPc4
* @author treeroot e6*8K@LHB
* @since 2006-2-2 _>+Ld6.T6
* @version 1.0 lxx2H1([
*/ RZLq]8pM
public class ImprovedMergeSort implements SortUtil.Sort { FrS]|=LJhX
Ui~>SN>s
private static final int THRESHOLD = 10; @"A4$`Xi3
oR'm2d ^
/* [,Gg^*umS
* (non-Javadoc) (QEG4&9
* +7Gwg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pBHRa?Y5
*/ 01]f2.5
public void sort(int[] data) { K-v#.e4
int[] temp=new int[data.length]; D*jM1w_`
mergeSort(data,temp,0,data.length-1); t.<i:#rj>l
} 4?kcv59
y[;>#j$
private void mergeSort(int[] data, int[] temp, int l, int r) { l?e.9o2-
int i, j, k; I7onX,U+
int mid = (l + r) / 2; ="+#W6bZT
if (l == r) z/-=%g >HA
return; d]9z@Pd
if ((mid - l) >= THRESHOLD) 2/?|&[
mergeSort(data, temp, l, mid); ch]IzdD
else #a#F,ZT
insertSort(data, l, mid - l + 1); KlEpzJ98
if ((r - mid) > THRESHOLD) 2y4bwi
mergeSort(data, temp, mid + 1, r); *dQSw)R
else 5pX6t
insertSort(data, mid + 1, r - mid); 9up3[F$
=_CzH(=f#
for (i = l; i <= mid; i++) { 00(\ZUj
temp = data; VY-EmbkG-t
} 6ujWNf
for (j = 1; j <= r - mid; j++) { I9^x,F"E]
temp[r - j + 1] = data[j + mid]; &oNAv-m^GD
} Z,gk|M3.
int a = temp[l]; F9^S"qv$
int b = temp[r]; wYea\^co
for (i = l, j = r, k = l; k <= r; k++) {
mh%VrAq
if (a < b) { z{q`G wW
data[k] = temp[i++]; U{mYTN*:j$
a = temp; $nb[GV
} else { UMi~14& ;
data[k] = temp[j--]; W?&%x(6M
b = temp[j]; tQVVhXQ7
} ^iA9%zp
} 7V>M]
} Xw1*(ffk
*~`(RV
/** h[ ZN+M
* @param data i8p6Xht
* @param l jXJyc'm7
* @param i 6BlXLQ,8q
*/ JF]JOI6.e
private void insertSort(int[] data, int start, int len) { sOY:e/_F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +@UV?"d
} _c07}aQ ],
} (FV >m
} (7Qo
} hH.G#-JO
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堆排序: sW$XH1Uf#
[g,}gyeS(
package org.rut.util.algorithm.support; *8q.YuZ
>_}
I.\X
import org.rut.util.algorithm.SortUtil; !-bB559Nv
2wn2.\v M
/** `cO:<^%
* @author treeroot 4i bc
* @since 2006-2-2 xw%0>K[
* @version 1.0 7)m9"InDI
*/ 1C.VnzRnJ
public class HeapSort implements SortUtil.Sort{ :UdF
d9ihhqq3}
/* (non-Javadoc) Bvj0^fSm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2%1hdA<
*/ rqq1TRg
public void sort(int[] data) { :k"]5>(^
MaxHeap h=new MaxHeap(); *hrd5na
h.init(data); +\'tE~V
for(int i=0;i h.remove(); L];b<*d
System.arraycopy(h.queue,1,data,0,data.length); rQX zR
} |ZBw<f
*:1ey{w:
private static class MaxHeap{ YIE<pX4Q7)
9uY'E'm*
void init(int[] data){ Tw%
3p=
this.queue=new int[data.length+1]; 13PS2
for(int i=0;i queue[++size]=data; k9R9Nz|J
fixUp(size); a.'*G6~Qgw
} ^.tg 7%dJ
} b6[j%(
qR.Q,(b|
private int size=0; N!3 2 wJ
^8tEach
private int[] queue; C~[,z.FvO
lr?;*f^3
public int get() { SuznN
L=/$
return queue[1]; Cw%{G'O
} c,22*.V/
zi:BF60]=
public void remove() { ax2B ]L2
SortUtil.swap(queue,1,size--); ]Dzlp7Y}
fixDown(1); =sFTxd_"iQ
} mmsPLv6
file://fixdown wBzC5T%,
private void fixDown(int k) { 67TwPvh
int j; fVwUe _Y
while ((j = k << 1) <= size) { f::Dx1VcX
if (j < size %26amp;%26amp; queue[j] j++; 'yth'[
if (queue[k]>queue[j]) file://不用交换 B *vM0
break; H]!"Zq k
SortUtil.swap(queue,j,k); >p/`;Kq@
k = j; 51u0]Qx;fm
} Bt#N4m[X*|
} ^{{ qV
private void fixUp(int k) { \9d$@V
while (k > 1) { yVc(`,tZ(
int j = k >> 1; "KlwA.7/
if (queue[j]>queue[k]) _ m>b2I?
break; ]k(]qZ
SortUtil.swap(queue,j,k); d3Rw!slIq
k = j; ^.G$Q# y,
} Je@v8{][|
} tDo"K3
fnY.ao1-s[
} +#By*;BJ
vy/-wP|1
} ]9XDS[<2`
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7 ^
SortUtil: :EH=_"
/bEAK-
package org.rut.util.algorithm; G:JR7N$
k8Xm n6X
import org.rut.util.algorithm.support.BubbleSort; C?Ucu]cW
import org.rut.util.algorithm.support.HeapSort; :LTN!jj
import org.rut.util.algorithm.support.ImprovedMergeSort; nm+s{
import org.rut.util.algorithm.support.ImprovedQuickSort; -hV*EPQ/
import org.rut.util.algorithm.support.InsertSort; ]?)TdJ`
import org.rut.util.algorithm.support.MergeSort; <Qq*p
import org.rut.util.algorithm.support.QuickSort; C>~TI,5a3
import org.rut.util.algorithm.support.SelectionSort; /> Nt[o[r
import org.rut.util.algorithm.support.ShellSort; xpI wrJO
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/** ^(<f/C)i
* @author treeroot @KA4N`
* @since 2006-2-2 V:27)]q
* @version 1.0 S$k&vc(0
*/ +{>=^9%X
public class SortUtil { $|@ r!/W
public final static int INSERT = 1; PX99uWx5]
public final static int BUBBLE = 2; 9Ee'Cm
public final static int SELECTION = 3; l]cFqLp
public final static int SHELL = 4; a6H%5N
public final static int QUICK = 5;
9akH
public final static int IMPROVED_QUICK = 6; x :7IIvP
public final static int MERGE = 7; {|\.i
public final static int IMPROVED_MERGE = 8; _wOt39e&
public final static int HEAP = 9; iOdpM{~*
fQ98(+6
public static void sort(int[] data) { +O5hH8<&b
sort(data, IMPROVED_QUICK); V+~Nalm O
} +>9Q/E
private static String[] name={ ap~^Ty<>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ewm9\qmg
}; GF
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p#[.{
private static Sort[] impl=new Sort[]{ {PmZ9
new InsertSort(), aoTP[Bp
new BubbleSort(), f-2c0Bi
new SelectionSort(), 1U\z5$V
new ShellSort(), "mNq&$
new QuickSort(), ^t"'rD-I
new ImprovedQuickSort(), FN;^"H
new MergeSort(), {e5= &A
new ImprovedMergeSort(), ??T#QQ
new HeapSort() ETLD$=iS
}; oRzi>rr
c|1&lYal;
public static String toString(int algorithm){ |)81Lz
return name[algorithm-1]; {iLT/i%
} s{" 2L{,$
VD :/PL
public static void sort(int[] data, int algorithm) { X7wKy(g
impl[algorithm-1].sort(data); O~QB!<Q+
} `XB
9Mi=
g1o8._f.
public static interface Sort { 3,=6@U
public void sort(int[] data); $g7<Y*t[
} !a<ng&H^U
+MLVbK
public static void swap(int[] data, int i, int j) { gNhQD*+>{
int temp = data; *#Wdc O`-
data = data[j]; @A5?3(e
data[j] = temp; T^v}mWCZ
} >*n0n!vF
} y Wya&|D9