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。 S~)w\(r
插入排序: gnLn7?
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package org.rut.util.algorithm.support; LA4<#KP
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import org.rut.util.algorithm.SortUtil; MBw-*K'?zB
/** CPviR<ms_
* @author treeroot _1|$P|$P.
* @since 2006-2-2 /L v1$~
* @version 1.0 7I}P*%(f
*/ #BY`h~&T
public class InsertSort implements SortUtil.Sort{ #@qN8J}R
6/tI8H3E
/* (non-Javadoc) SfB8!V|;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >xg5z
*/ uzBz}<M=
public void sort(int[] data) { ?j{C*|yHO
int temp; NfzF.{nh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =o^|b ih
} v`DI<Lt
} sx
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} A:# k
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} M#,Q
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冒泡排序: Rc[ 0aj:
idc4Cf+4
package org.rut.util.algorithm.support; A\QJLWBv^$
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import org.rut.util.algorithm.SortUtil; #0"~G][#
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/** HpW 42
* @author treeroot SVWIEH0?
* @since 2006-2-2 $t/rOo9cV
* @version 1.0 7J*N_8?2
*/ ?+2b(2&MXE
public class BubbleSort implements SortUtil.Sort{ PmX2[7
'#\1uXM1U?
/* (non-Javadoc) h<6UC%'ac
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2/7_;_#vJ%
*/ h7yqk4'Lq
public void sort(int[] data) { Ev9> @~^
int temp; }-DE`c
for(int i=0;i for(int j=data.length-1;j>i;j--){ izZ=d5+K
if(data[j] SortUtil.swap(data,j,j-1); 06mlj6hV
} h|;qG)f^
} {i [y9
} %.HJK
} zsXpA0~3s
E JK0
} #8h;Bj
p(JlvJjo
选择排序: c EnkU]
<a^Oj LLU
package org.rut.util.algorithm.support; BR5BJX
LT@OWH
import org.rut.util.algorithm.SortUtil; 1X1 NtS@
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/** !>$4]FkV
* @author treeroot {+.r5py
* @since 2006-2-2 |L6&Gf]#5
* @version 1.0 DcD{*t?x
*/ 1Sz A3c
public class SelectionSort implements SortUtil.Sort { :t("L-GPW
l$xxrb9P!
/* d_z59
* (non-Javadoc) 3=0E!e
* TQ@d~GR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w#y0atsg'
*/ }8K4-[\
public void sort(int[] data) { TbvtqM 0
int temp; ]lO h&Cz[
for (int i = 0; i < data.length; i++) { /+]s.V.
int lowIndex = i; `~BZ1)@
for (int j = data.length - 1; j > i; j--) { ,e722wz
if (data[j] < data[lowIndex]) { NH A 5e<
lowIndex = j; w.{&=WTr
} v-b0\_
} YB( Gk;]
SortUtil.swap(data,i,lowIndex); Qdk6Qubi!
} v`PY>c6~
} H^%lDz
L1{GL #qV
} *fMpZ+;[m
AyKMhac
Shell排序: ?~e3&ux
fwR_OB:$
package org.rut.util.algorithm.support; J3RB]O_
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import org.rut.util.algorithm.SortUtil; (!L5-8O
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/** */qtzt
* @author treeroot YIRZ+H<Q
* @since 2006-2-2 (N-RIk73/O
* @version 1.0 13k
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*/ !^oV #
public class ShellSort implements SortUtil.Sort{ kRJ4-n^@><
'9p@vi{\
/* (non-Javadoc) 56lCwXCgA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YY((#"o;l
*/ 0|4%4Mt
public void sort(int[] data) { hwYQGtjF
for(int i=data.length/2;i>2;i/=2){ H6*^Ga
for(int j=0;j insertSort(data,j,i); y9H%
Xl
} <xpph
t<
} #N(= 3Cj
insertSort(data,0,1); 9m2, qr|
} +n0r0:z0
p{A}pnjf
/** 796\jf$
* @param data %]gTm7
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* @param j 0oZsb\
* @param i g#]" hn
*/ Jzji&A~
private void insertSort(int[] data, int start, int inc) { f"[J"j8
int temp; *D}0[|O
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7cP@jj
} <*ZJaBwWU~
} Kb#4ILA
} S^@S%Eg
:$;Fhf<5
} a]17qMl
p@!nYPr.
快速排序: \uqjs+
tsOrt3
package org.rut.util.algorithm.support; MB^~%uZ2K
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import org.rut.util.algorithm.SortUtil; +Mewo
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/** 8
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b
* @author treeroot {'sY|lou
* @since 2006-2-2 N[]Hc
* @version 1.0 j`'`)3f
*/ T3UMCqc=
public class QuickSort implements SortUtil.Sort{ zLs|tJOVp
@+vXMJ $
/* (non-Javadoc) >WJf=F`_H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )UgX3+@
*/ (s<Dd2&.H
public void sort(int[] data) { ;7]u!Q
quickSort(data,0,data.length-1); 5,qj7HZF
} _R'Fco
private void quickSort(int[] data,int i,int j){ ZRxZume<f
int pivotIndex=(i+j)/2; 00I}o%akO
file://swap ?&G`{Ey
SortUtil.swap(data,pivotIndex,j); E1dD7r\
^'CPM6J
int k=partition(data,i-1,j,data[j]); Xp\/YJOibd
SortUtil.swap(data,k,j); `g8E1-]l
if((k-i)>1) quickSort(data,i,k-1); f0<hE2
if((j-k)>1) quickSort(data,k+1,j); fH`P[^N
=ph&sn$;L
} ,g-EW
jN
/** rk+#GO{
* @param data +;$oJJ
* @param i ](tx<3h
* @param j +a&p$\
* @return /kL$4CA
*/ iLP7!j
private int partition(int[] data, int l, int r,int pivot) { Tus}\0/i>
do{ f.aSKQD
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2"|2a@
SortUtil.swap(data,l,r); p.ANVA@:
} !CXt*/~
while(l SortUtil.swap(data,l,r); GRb*EeT
return l; T2}FYVj?!g
} q)H1pwxD
u p.Q>28r
} .)}@J5P)
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改进后的快速排序: Q9I
j\HbA"
WLF0US'
package org.rut.util.algorithm.support; p
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import org.rut.util.algorithm.SortUtil; 1(|D'y#
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/** X37 L\e[c
* @author treeroot P\8@g U!uk
* @since 2006-2-2 6x"Q
* @version 1.0 D:k3"
E"S
*/ `D9]*c
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public class ImprovedQuickSort implements SortUtil.Sort { j1_@qns{
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private static int MAX_STACK_SIZE=4096; D9`0Dr}/2
private static int THRESHOLD=10; ;Yi4Xva@
/* (non-Javadoc) )jq?lw'&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0sI1GhVR
*/ y=In?QN{6*
public void sort(int[] data) { M?= ;JJ:
int[] stack=new int[MAX_STACK_SIZE]; da1]mb=4 5
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int top=-1; OB[o2G <0
int pivot; kYzC#.|1
int pivotIndex,l,r; SyAvKd`g
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stack[++top]=0;
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stack[++top]=data.length-1; jiF?fX@
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while(top>0){ D:Q
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int j=stack[top--]; *Z m^
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int i=stack[top--]; )tCX
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pivotIndex=(i+j)/2; nW;g28
pivot=data[pivotIndex]; d
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.{;Y'Zc14S
SortUtil.swap(data,pivotIndex,j); ix#epuN
kdb(I@6
file://partition F4<O2!V
l=i-1; yLsz8j-QJ
r=j; V5p=
mmnA,
do{ h" H2z1$
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +~xnXb1
SortUtil.swap(data,l,r); &$`yo`
} {.yStB.T
while(l SortUtil.swap(data,l,r); ]xguBh ]
SortUtil.swap(data,l,j); E*# ]**
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y
if((l-i)>THRESHOLD){ =]-j;#'&
stack[++top]=i; bT
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stack[++top]=l-1; FQ>`{%>
} bzdb|I6Z
if((j-l)>THRESHOLD){ 0i8LWX_M
stack[++top]=l+1; zG e'*Qei
stack[++top]=j; /r12h|
} ""s]zNF}
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"Q/
} b)9'bJRvU
file://new InsertSort().sort(data); PMfkA!.Y
insertSort(data); W>q HFoKa
} lN9=TxH1(;
/** c)@>zto#
* @param data c5|:,wkx
*/ "B_K
XL
private void insertSort(int[] data) { jE#O>3+.
int temp; H3Se={5h\A
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5e
sQ;
} ~EK'&Y"1
} O5H9Y}i]
} q5>v'ZSo
F@R1:M9*
} ~tOAT;g}q
Q[+ac*F=Y
归并排序: >Z1q j>
&qS[%K )
package org.rut.util.algorithm.support; 4mn&4e
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import org.rut.util.algorithm.SortUtil; 6\61~u ~
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/** lY*[tmz)
* @author treeroot UX]L;kI
* @since 2006-2-2 +:3*
* @version 1.0 gIA@l`"
*/ V'w@rc\XN
public class MergeSort implements SortUtil.Sort{ w&xDOyW]
2< hAa9y
/* (non-Javadoc) 3BpZX`l*p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D~o$GW%
*/ yjJ5P`j]
public void sort(int[] data) { /O]t R
int[] temp=new int[data.length]; n ]dL?BJ
mergeSort(data,temp,0,data.length-1); pH`44KAuM
} @-OnHE
KRjV}\}
private void mergeSort(int[] data,int[] temp,int l,int r){ V^Hu3aUx8
int mid=(l+r)/2; =}PdH`S
if(l==r) return ; .'a&33J
mergeSort(data,temp,l,mid); )]#aa uC+
mergeSort(data,temp,mid+1,r); 7bDHXn
for(int i=l;i<=r;i++){ wu"&|dt
temp=data; b,KcBQ.
} *!^<m0
int i1=l; M`6y@<
int i2=mid+1; u !!X6<
for(int cur=l;cur<=r;cur++){ :UJ a&$)
if(i1==mid+1) wCk~CkC?
data[cur]=temp[i2++]; y*MF&mQ[
else if(i2>r) f@co<iA
data[cur]=temp[i1++]; 7mm1P9Z
else if(temp[i1] data[cur]=temp[i1++]; f-nz{U
else Y'e eA 2O
data[cur]=temp[i2++]; x1 1U@jd+1
} )*c>|7G
} <w\:<5e '
"[:iXRu
} k<+0o))
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改进后的归并排序: ^fz+41lE\
L],f3<
package org.rut.util.algorithm.support; NAPX_B,6
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import org.rut.util.algorithm.SortUtil; ZIdA\_c
fb da
/** LSQz"Ll
l
* @author treeroot TY(bPq
* @since 2006-2-2 r]ShZBAbYp
* @version 1.0 U.{l;EL:T
*/ Ma|qHg
public class ImprovedMergeSort implements SortUtil.Sort { I}2P>)K
)!tK[K?5
private static final int THRESHOLD = 10; aTBR|US
,C {*s$
/* ](F#`zUQ
* (non-Javadoc) B^%1Rpcn
* -+t]15
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *%vwM7
*/ >3u]OSb
public void sort(int[] data) { Dz./w
int[] temp=new int[data.length]; TE )gVE]
mergeSort(data,temp,0,data.length-1); N$[$;Fm:
} lgpW@g
7OWbAu;
private void mergeSort(int[] data, int[] temp, int l, int r) { =+w*gDr
int i, j, k; ;L&TxO>#J
int mid = (l + r) / 2; jgS%1/&
if (l == r) ]59i>
return; T;L>P[hNn
if ((mid - l) >= THRESHOLD) hm<}p&!J
mergeSort(data, temp, l, mid); N8`?t5
else /*Qq[C
insertSort(data, l, mid - l + 1); XlI!{qj|
if ((r - mid) > THRESHOLD) R}mn*h6
mergeSort(data, temp, mid + 1, r); ^s.V;R
else mZIoaF>t
insertSort(data, mid + 1, r - mid); n&MG7`]N
Z!0]/ mCE8
for (i = l; i <= mid; i++) { lcV<MDS
temp = data; ET];%~ ^
} &uUo3qXQ5l
for (j = 1; j <= r - mid; j++) { >yJ9U,Y
temp[r - j + 1] = data[j + mid]; Ap{}^
} G|8%qd
int a = temp[l]; .WQ<jZt>
int b = temp[r]; ,<DB&&EV8
for (i = l, j = r, k = l; k <= r; k++) { (z$r :p
if (a < b) { ~ d^<_R
data[k] = temp[i++]; ;6
+}z~
a = temp; 6n1rL
} else { 20rkKFk*
data[k] = temp[j--]; {G*A.$-d
b = temp[j]; ceGa([#!\_
} e4FM} z[
} PM":Vd/
} )6~1 ^tD
d3^OEwe
/** rw)kAe31
* @param data v+"rZ
* @param l '&;yT[
* @param i aQ j*KMc
*/ rwIeqV{:
private void insertSort(int[] data, int start, int len) { i*R,QN)
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 80M;4nH^5
} R_sC! -
}
kj5Q\vr)
} .lhn;*Yi
} ^[Cv26
w<9>Q1(
堆排序: 5BR5X\f0
w#i[_
package org.rut.util.algorithm.support; ZDL']*)'
U}Hwto`R
import org.rut.util.algorithm.SortUtil; x ]5@>5
g/UaYCjM
/** Y,8KPg@W
* @author treeroot P\CDd=yWc
* @since 2006-2-2 0tk#Gs[
* @version 1.0 VCy5JH
*/ I &* _,d
public class HeapSort implements SortUtil.Sort{ gfU-"VpHE
&/.hx(#d
/* (non-Javadoc) V E2tq k%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;DnUQj
*/ G= ^X1+_
public void sort(int[] data) { +*oS((0s
MaxHeap h=new MaxHeap(); d+iR/Ssc
h.init(data); /9yaW7w
for(int i=0;i h.remove(); S'~o,`xy
System.arraycopy(h.queue,1,data,0,data.length); <*H^(0
} uR6w|e`
;jK#[*y
private static class MaxHeap{ }_QKJw6/"
f^e6<5gdf
void init(int[] data){ ^5=UK7e5KY
this.queue=new int[data.length+1]; sM1RU
for(int i=0;i queue[++size]=data; EPW7+Ve
fixUp(size); *s}|Hy
} o
A*G
} K7I&sS^x
+a=
0\lpOy
private int size=0; #n\C
|
Uh.Zi3X6}6
private int[] queue; y%]8'q$
N12:{U
public int get() { "%8A:^1
return queue[1]; A{o 'z_zC
} uQLlA&I"
Y^"4?96
public void remove() { m8+(%>+7
SortUtil.swap(queue,1,size--); l^NC]t
fixDown(1); D}Ilyk_uUw
} F="z]C;u
file://fixdown V%HS\<$h
private void fixDown(int k) { 'k&?DZ!
int j; 7dh1W@\
while ((j = k << 1) <= size) { ~$O1`IT
if (j < size %26amp;%26amp; queue[j] j++; 'UM!*fk7C
if (queue[k]>queue[j]) file://不用交换 SN+S6
break; Jeqxspn
T
SortUtil.swap(queue,j,k); @E`?<|B}
k = j; -jg (G GJ
} /7$mxtB5%L
} j&6 jRX
private void fixUp(int k) { &;H{cv`
while (k > 1) { Iy
{U'a!
int j = k >> 1; FgA//)1
if (queue[j]>queue[k]) dTEJ=d40
break; 5T4"j;_.BL
SortUtil.swap(queue,j,k); jj\ [7 O*
k = j; {gf>*
} e{G_GycH
} PX".Km p.
wCZO9sU:6=
} QL"gWr`R
D_|B2gdZY
} hQJWKAf,/
a!Yb1[
SortUtil: P#GD?FUc
AZFWuPJo
package org.rut.util.algorithm; |U[y_Y\a
#_Ea[q7v
import org.rut.util.algorithm.support.BubbleSort; r
-f
import org.rut.util.algorithm.support.HeapSort; 0rMqWP
import org.rut.util.algorithm.support.ImprovedMergeSort; .")b?#K
import org.rut.util.algorithm.support.ImprovedQuickSort; PB~_I=
import org.rut.util.algorithm.support.InsertSort; &yH#s
8^8
import org.rut.util.algorithm.support.MergeSort; MQcE6)
import org.rut.util.algorithm.support.QuickSort; 5{>0eFzG
import org.rut.util.algorithm.support.SelectionSort; 0yof u
import org.rut.util.algorithm.support.ShellSort; i%(yk#=V
`rWB`q|i<
/** (b/d0HCND
* @author treeroot &jts:^N>
* @since 2006-2-2 #dJ 2Q_2
* @version 1.0 _=`x])mM
*/ o0;7b>Tv
public class SortUtil { z<C[nR$N
public final static int INSERT = 1; +h[e0J|v{
public final static int BUBBLE = 2; p?rK`$U+J
public final static int SELECTION = 3; cV$lobqO
public final static int SHELL = 4; L@|#Bbmx
public final static int QUICK = 5; y{rn-?`{
public final static int IMPROVED_QUICK = 6; C@dGWAG
public final static int MERGE = 7; F%6*Df;cSe
public final static int IMPROVED_MERGE = 8; 5ouQQ)vA
public final static int HEAP = 9; qR,.W/eS8
*M!kA65'
public static void sort(int[] data) { `ENP=kL(+
sort(data, IMPROVED_QUICK); P!\hnm)%4
} lC9S\s
private static String[] name={ I{n;4?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jW5iqU"{*
}; +BB0wY
q@ Kk\m
private static Sort[] impl=new Sort[]{ @[r ={s\
new InsertSort(), dt-K
new BubbleSort(), QJ<[Zx
new SelectionSort(), (-(*XNC
new ShellSort(), H/i<_L P
new QuickSort(), <Ry$7t,
new ImprovedQuickSort(), u7k|7e=xk
new MergeSort(), Vq}r_#!Q
new ImprovedMergeSort(), G:+16XCra
new HeapSort() 7~.ZE
}; {;RF
^tE_LL+ji|
public static String toString(int algorithm){ Z H-5Qy_
return name[algorithm-1]; *caLN,G
} iPU% /_>
/_OOPt=G
public static void sort(int[] data, int algorithm) {
[,7-w
impl[algorithm-1].sort(data); UD*+"~
} aW`dFitpM
a>b8-j=J
public static interface Sort { [-VGArD[k,
public void sort(int[] data); "|4jPza
} gB+
G'I
``-k{C#F
public static void swap(int[] data, int i, int j) { ^g]xU1] *
int temp = data; =x4a~=HX
data = data[j]; 9--dRTG
data[j] = temp; =h\E<dw
} b?k4InXh
} a%n'%*0