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。 @ bvWqMa
插入排序: tr
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package org.rut.util.algorithm.support; a<pEVV\NB~
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import org.rut.util.algorithm.SortUtil; g[{rX4~|
/** CZv^,O(M?2
* @author treeroot yK2>ou
* @since 2006-2-2 )A;jBfr
* @version 1.0 ^3&-!<*
*/ 7z&^i-l.
public class InsertSort implements SortUtil.Sort{ wzI*QXV2s
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/* (non-Javadoc) n<[H!4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G#^6H]`[J:
*/ Im`R2_(]
public void sort(int[] data) {
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int temp; BGT`) WP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^6,}*@
} 4,6?sTuX
} ~;uW)
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} R<>uCF0
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} M<)Vtn
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冒泡排序: u7u1lx>S
@v\jL+B+m
package org.rut.util.algorithm.support; %t-}dC&
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import org.rut.util.algorithm.SortUtil; kh*td(pfP9
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/** x8h=3e$
* @author treeroot \o!B:Vb<
* @since 2006-2-2 r%oXO]X
* @version 1.0 cNuBWLG
*/ '~Gk{'Nx"
public class BubbleSort implements SortUtil.Sort{ {B\lk:"X
oth=#hfU^
/* (non-Javadoc) K}Pi"Le@W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6~(iLtd#
*/ ^F$iD (f
public void sort(int[] data) { af2yng
int temp; &uv7`VT
for(int i=0;i for(int j=data.length-1;j>i;j--){ >:U{o!N`#_
if(data[j] SortUtil.swap(data,j,j-1); 6?jSe<4x
} ^cYt4NHXn
} PxZMH=
} yNmzRH u
} []eZO_o6j
bMF`KRP2
} 9RN! <`H
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选择排序: _M}}H3
|/p2DU2
package org.rut.util.algorithm.support; /H[ !v:U
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import org.rut.util.algorithm.SortUtil; 3MFb\s&Fq
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/** #_OrS/H
* @author treeroot |zSoA=7?
* @since 2006-2-2 <D M:YWNa
* @version 1.0 i/WiSwh:
*/ lilF _y
public class SelectionSort implements SortUtil.Sort { GGwHz]1L
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/* *+'l|VaVq\
* (non-Javadoc) Jx1JtnyP@
* c1Ta!p{%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3sq(FsT
*/ ^c]lEo
public void sort(int[] data) { :>otlI<0t
int temp; q'awV5y
for (int i = 0; i < data.length; i++) { -nrfu) G
int lowIndex = i; v/lQ5R1
for (int j = data.length - 1; j > i; j--) { }fKpih
if (data[j] < data[lowIndex]) { 27KfT]=
lowIndex = j; a7Rg!%r
} g{06d~Y
} cH%#qE3
SortUtil.swap(data,i,lowIndex); b:}+l;e52
} WKPuIE:
} c 7uryL
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} kUG3_ *1
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Shell排序: /?P="j#u
j8Csnm0
package org.rut.util.algorithm.support; #/Qe7:l
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import org.rut.util.algorithm.SortUtil; (Q09$
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/** !EQMTF=(
* @author treeroot v(tr:[V
* @since 2006-2-2 h
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* @version 1.0 C6C7*ks
*/ "ewB4F[
public class ShellSort implements SortUtil.Sort{ q9&d24|
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/* (non-Javadoc) 77ID
82
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4h[^!up.7
*/ e:
public void sort(int[] data) { &<sN(;%0R
for(int i=data.length/2;i>2;i/=2){ Q@lJ|
for(int j=0;j insertSort(data,j,i); 7 n=fB#!*3
} ( nH3
} U0:tE>3`
insertSort(data,0,1); 2x7%6'
} B3^4,'
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/** {~ngI<
* @param data A;A>Q`JJF
* @param j c|'hs
* @param i }~RH!Q1
*/ !Z6GID})p
private void insertSort(int[] data, int start, int inc) { :!f1|h
int temp; OW12m{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A,T3%TE
} Sgt@G=_o
} .{1MM8 Q
} ?*Kewj
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} &\0`\#R
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快速排序: huau(s0um
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package org.rut.util.algorithm.support; e>kw>%3bl9
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import org.rut.util.algorithm.SortUtil; J!:ss
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/** J8x>vC
* @author treeroot r$*p
* @since 2006-2-2 %HJ_0qg
* @version 1.0 ;ml;{<jI
*/ " (+>#
public class QuickSort implements SortUtil.Sort{ 4V7{5:oa
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/* (non-Javadoc) dfo{ B/+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {qm(Z+wcmb
*/ b7/1]
public void sort(int[] data) { Y24:D7Q
quickSort(data,0,data.length-1); >4.{|0%ut
} j!;?=s
private void quickSort(int[] data,int i,int j){ G!54 e
int pivotIndex=(i+j)/2; PT|W{RlNl
file://swap $zTjh~ 9
SortUtil.swap(data,pivotIndex,j); dOFxzk,g&R
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int k=partition(data,i-1,j,data[j]); CW Y'q
SortUtil.swap(data,k,j); tF)aNtX4^
if((k-i)>1) quickSort(data,i,k-1); }Jgz#d
if((j-k)>1) quickSort(data,k+1,j); ]y,6
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} @Zs}8YhC
/** !m$OI:rr
* @param data l|fOi A*K
* @param i (d[)U<
* @param j ^z$-NSlI
* @return MS6^= ["
*/ {O6f1LuH
private int partition(int[] data, int l, int r,int pivot) { oUm"qt_
do{ Xv'M\T}6C+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %/H
SortUtil.swap(data,l,r); _?3bBBy
} bgd1j,PWbW
while(l SortUtil.swap(data,l,r); B_[^<2_
return l; 'Z-jj2t}
} G1Cn[F;e
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} i+&*W{Re
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改进后的快速排序: .h^."+TJ
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package org.rut.util.algorithm.support; x~}RL-Y2o
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import org.rut.util.algorithm.SortUtil; er}/~@JJ
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/** 4ow)vS(
* @author treeroot "qb3\0O
* @since 2006-2-2 _.Y?BAQ
* @version 1.0 Xb42R1
*/ abtAkf
public class ImprovedQuickSort implements SortUtil.Sort { @R?S-*o
OFCOMM
private static int MAX_STACK_SIZE=4096; `,&h!h((
private static int THRESHOLD=10; gydPy*
/* (non-Javadoc) ^zQ;8)ng
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U]fE(mpI9
*/ pHY~_^B4&
public void sort(int[] data) { )[6H!y5
int[] stack=new int[MAX_STACK_SIZE]; z48,{H6h
j3 ~: \H
int top=-1; JPgV7+{b[
int pivot; '1=t{Rw
int pivotIndex,l,r; MZE8Cvq0
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stack[++top]=0; x9
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stack[++top]=data.length-1; ]]+wDhxH
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while(top>0){ 5A/G?
int j=stack[top--]; 8|?$KLz?F>
int i=stack[top--]; G7`7e@{
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pivotIndex=(i+j)/2; Q5iuK#/
pivot=data[pivotIndex]; `w]=xe
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SortUtil.swap(data,pivotIndex,j); jGd{*4{3+
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file://partition uA:|#mO
l=i-1; iU{F\>
r=j; c0u!V+V%
do{ f>5{SoM
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $\$5::}r
SortUtil.swap(data,l,r); b3x!tuQn
} 8OZc:/
while(l SortUtil.swap(data,l,r); waW2$9O
SortUtil.swap(data,l,j); A5+vz u^
PV>-"2n
if((l-i)>THRESHOLD){ OR4!73[I
stack[++top]=i; J
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stack[++top]=l-1; eM+]KG)}
} bQb>S<PT
if((j-l)>THRESHOLD){ |Z$heYP:w
stack[++top]=l+1; "a;JQ:
stack[++top]=j; qp_kILo~
} IC/'<%k
O(h4;'/E
} X&t)S?eCos
file://new InsertSort().sort(data); 2Q)"~3
insertSort(data); rFSLTbTf
} &2MW.,e7s
/** (J][(=s;a
* @param data wnP#.[,V
*/ <Jo_f&&{
private void insertSort(int[] data) { FlRbGg^
int temp; E:(flW=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^:\|6`{n
} G#8HY VF
}
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} f$NudG!S
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} ^/2n[orl5
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归并排序: WL7R.!P
6?Rm>+2>v
package org.rut.util.algorithm.support; 'u{m37ZJ
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import org.rut.util.algorithm.SortUtil; m]+g[L?-
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/** ,Zb]3
* @author treeroot *;(LKRV
* @since 2006-2-2 B[!wo
* @version 1.0 ATv.3cy
*/ UW<V(6P
public class MergeSort implements SortUtil.Sort{ qXkc~{W_
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/* (non-Javadoc) 0~H(GG$VH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k ;R*mg*K
*/ g9H~\w
public void sort(int[] data) { vdYd~>w
int[] temp=new int[data.length]; {%'(IJ|5z
mergeSort(data,temp,0,data.length-1); ]YQlCx`
} r
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x1]^].#Eo
private void mergeSort(int[] data,int[] temp,int l,int r){ 0"kNn5
int mid=(l+r)/2; +iir]"8
if(l==r) return ; !,+peMy
mergeSort(data,temp,l,mid); 5v=%pQbY
mergeSort(data,temp,mid+1,r); &eG,CIT
for(int i=l;i<=r;i++){ `ux
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temp=data; D:U:( pg
} 4T`u?T]
int i1=l; d Ayof=
int i2=mid+1; !1]72%k[
for(int cur=l;cur<=r;cur++){ [2gK^o&t
if(i1==mid+1) @|6n.'f+
data[cur]=temp[i2++]; x^qmYX$'1b
else if(i2>r) ><viJ$i
data[cur]=temp[i1++]; WQ<J<$$uu
else if(temp[i1] data[cur]=temp[i1++]; { ,/mQ3
else 3 ~0Z.!O
data[cur]=temp[i2++]; a=&a)FR
} z[ B*sbS
} QDRSQ[ \
ji="vs=y
} # nwEF QA
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改进后的归并排序: lV:R8^d
%'nM!7w@I
package org.rut.util.algorithm.support; ^<'5 V)
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import org.rut.util.algorithm.SortUtil; ` =RJ8u
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/** 6&S;Nrg9
* @author treeroot 57Q^"sl
* @since 2006-2-2 TggM/@k
* @version 1.0 IExo#\0'6
*/ SEq_37
public class ImprovedMergeSort implements SortUtil.Sort { -~~"}u
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private static final int THRESHOLD = 10; mVg-z~44T
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/* UJ1iXV[h"
* (non-Javadoc) hW$B;
* V~tq
_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1hw1AJ}(F
*/ aB;syl{
public void sort(int[] data) { Q>] iRx>MZ
int[] temp=new int[data.length]; {1;j1|CI
mergeSort(data,temp,0,data.length-1); .i>; ?(GH
} dkt'~
dFFJw[$8w
private void mergeSort(int[] data, int[] temp, int l, int r) { q{HfT
d
int i, j, k; Q0i.gEwe
int mid = (l + r) / 2; .p NWd
if (l == r) 4d#w}
return; BoE;,s>]NW
if ((mid - l) >= THRESHOLD) ml <X92Y
mergeSort(data, temp, l, mid); obKWnet
else zs<W>gBq
insertSort(data, l, mid - l + 1); A9'
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if ((r - mid) > THRESHOLD) Fq>=0 )
mergeSort(data, temp, mid + 1, r); T&c0j(
else Veo:G{
insertSort(data, mid + 1, r - mid); !'o5X]s
55MrsiW
for (i = l; i <= mid; i++) { &^3KF0\Q
temp = data; ^m.QW*
} .[%em9u
for (j = 1; j <= r - mid; j++) { r|wB&
PGW
temp[r - j + 1] = data[j + mid]; =QFnab?N
} SQhk)S
int a = temp[l]; S=H<5*]g
int b = temp[r]; xdb9oH
for (i = l, j = r, k = l; k <= r; k++) { 0g}+%5]yg
if (a < b) { 64;F g/t
data[k] = temp[i++]; L1A0->t
a = temp; Oa~|a7 `o
} else { F(c~D0
data[k] = temp[j--]; ~V&4<=r`
b = temp[j]; gKy@$at&
} VU3xP2c:
} l!CWE
} px;5X4U
i1k(3:ay<
/** yQ5&S]Xk$$
* @param data 0`.3`Mk
* @param l F4'g}yOLd
* @param i qI;"yG-x-
*/ X_GR{z%
private void insertSort(int[] data, int start, int len) { "9,z"k
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /cHd&i,>
} >Pne@w!*
} Se h[".l
} tZ,vt7
} u3)Oj7cX
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堆排序: #U45;idp
'zCJK~x`x
package org.rut.util.algorithm.support; r2A%.bL#
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import org.rut.util.algorithm.SortUtil; qOy3D~
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/** 9s\(yC8h
* @author treeroot V\Oe ]w
* @since 2006-2-2 ^%l~|w
* @version 1.0 0!X;C!v;
*/ H%N!;Jz=
public class HeapSort implements SortUtil.Sort{ par|j]
c@9jc^CJ
/* (non-Javadoc) "^E/N},%u5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9l).L L
*/ v
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public void sort(int[] data) { (O {5L(
MaxHeap h=new MaxHeap(); <Y~?G:v6+
h.init(data); 4a3Xz,[(a
for(int i=0;i h.remove(); v,t;!u,40
System.arraycopy(h.queue,1,data,0,data.length); &2IrST{d:V
} G{$(t\>8
1,@-y#V_
private static class MaxHeap{ YI05?J}
Trd/\tX#v&
void init(int[] data){ Ei!t#'*D<
this.queue=new int[data.length+1]; <[{Ty+
for(int i=0;i queue[++size]=data; BG:l Zj'I
fixUp(size); 6&/H
XqP
} G8xM]'y
} sVP[7&vr~
lF-;h{
private int size=0; YT!QY@qw
SN2X{Q|*
private int[] queue; Ar&]/X,WG
mD }&X7
public int get() { iC-WQkQY
return queue[1]; N<c98
}
E~oQ%X~
#N%ATV
public void remove() { ]D|sQPi]F
SortUtil.swap(queue,1,size--); tY$
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fixDown(1); "0x"Xw#I
} 9_Tk8L#
file://fixdown 1Xy{&Ut\
private void fixDown(int k) { qh}M!p2
int j; P(?i>F7s
while ((j = k << 1) <= size) { g7*c wu
if (j < size %26amp;%26amp; queue[j] j++; Z}bUvr XP
if (queue[k]>queue[j]) file://不用交换 ECHl9;
+
break; H':dLR
SortUtil.swap(queue,j,k); .5=Qfvi*
k = j; (?MRbX]@
} &1O[N*$e
} ;)Rvk&J5
private void fixUp(int k) { |k5uVhN
while (k > 1) { [@D+kL*>
int j = k >> 1; WK7=z3mu
if (queue[j]>queue[k]) U9:?d>7
break; ,EPs>#d
SortUtil.swap(queue,j,k); sO7$b@"u.
k = j; @91Q=S
} #6g-{OBv
} `>:ozN#)\
7{=<_
} Kj[X1X5
&.k'Dj2hf
} |~mq+:44+
I#(D.\P
SortUtil: ^bpxhf
x
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package org.rut.util.algorithm; v=Ep
4-^LC<}k
import org.rut.util.algorithm.support.BubbleSort; g Z3VT{
import org.rut.util.algorithm.support.HeapSort; /BC(O[P
import org.rut.util.algorithm.support.ImprovedMergeSort; xLht6%o*
import org.rut.util.algorithm.support.ImprovedQuickSort; 'A91i
import org.rut.util.algorithm.support.InsertSort; 3UeG>5R
import org.rut.util.algorithm.support.MergeSort; j^A0[:2
import org.rut.util.algorithm.support.QuickSort; Bvx%|:R
import org.rut.util.algorithm.support.SelectionSort; 5=CLR
import org.rut.util.algorithm.support.ShellSort; nA8]/r1k
YpQ/ )fSEV
/** dR2#n
* @author treeroot dtJaQ`
* @since 2006-2-2 X$,#OR
* @version 1.0 2YvhzL[um
*/ 7aTo!T
public class SortUtil { 9k.LV/Y
public final static int INSERT = 1; @+A`n21,O
public final static int BUBBLE = 2; 9:0JWW^so
public final static int SELECTION = 3; yO
Cv-zm
public final static int SHELL = 4; `X?l`H;#
public final static int QUICK = 5; 2GRh8G&5
public final static int IMPROVED_QUICK = 6; PN0l#[{EN
public final static int MERGE = 7; [sG=(~BU
public final static int IMPROVED_MERGE = 8; U(5(0r
public final static int HEAP = 9; >O[# 661
k>#,1GbNZy
public static void sort(int[] data) { pE >~F
sort(data, IMPROVED_QUICK); -05zcIVo
} eN]0]9JO
private static String[] name={ s]Z/0:`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rlu{C4l
}; >*%ySlZbs
D6Ov]E:fa
private static Sort[] impl=new Sort[]{ ji{V#
new InsertSort(), d|Wpub
new BubbleSort(), j6Acd~y\2
new SelectionSort(), Eugt~j3
new ShellSort(), K V^`
new QuickSort(), 2&fIF}vk>m
new ImprovedQuickSort(), vW6Pf^yJ
new MergeSort(), Vf6lu)Zc1
new ImprovedMergeSort(), ehj&A+Ip
new HeapSort() "PGEiLY
}; ==I:>+_^|
DV +DJcF
public static String toString(int algorithm){ #9z\Wblr
return name[algorithm-1]; ry}CND(nB
} Vea>T^
!pl<
public static void sort(int[] data, int algorithm) { h$|K vS
impl[algorithm-1].sort(data); xin<.)!E
} WQ4:='(
4A0R07"
public static interface Sort { Z[KXDQn8
public void sort(int[] data); 7dI+aJ
} SiHZco
I
k<ds7k1m
public static void swap(int[] data, int i, int j) { `/ix[:}m^
int temp = data; Fs_V3i3|L
data = data[j]; 4lC:svF
data[j] = temp; Q/4g)( ~J
} 1R9hA7y&,/
} LoUi Yf