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。 P+_1*lOG
插入排序: pRsIi_~&
P9S)7&+DL
package org.rut.util.algorithm.support; '%TD#!a
dPV<:uO
import org.rut.util.algorithm.SortUtil; 5*90t{#
/** mT|r:Yr:
* @author treeroot N693eN!
* @since 2006-2-2 +~
Y.m8
* @version 1.0 5s4x%L (~}
*/ UxMei
public class InsertSort implements SortUtil.Sort{ *Csxf[O
6~?yn-Z
/* (non-Javadoc) q8GCO\(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u'T>Y1I
*/ 8W7ET@`
public void sort(int[] data) { dg+"G|nr
int temp; W!=ur,F+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U Q)^`Zj
} am| 81)|a
} {`>pigo
} /%{CJ0Y
SF ^$p$mC
} @.G;dL.f{
[3tU0BU"
冒泡排序: (5hUoDr!
q"f7$
package org.rut.util.algorithm.support; <5h}\5#<j
&&"+\^3
import org.rut.util.algorithm.SortUtil; Y10
+I:/8,&-x
/** #a]\3X
* @author treeroot ;uZeYY?
* @since 2006-2-2 !<X/_+G\
* @version 1.0 ?fc<3q"
*/ "/taatcH
public class BubbleSort implements SortUtil.Sort{ B~O<?@]d
*N6sxFs
/* (non-Javadoc) U`)d
`4"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tpgD{BY^wJ
*/ b`;&o^7gMO
public void sort(int[] data) { Gsm.a
int temp; u:wf:^
for(int i=0;i for(int j=data.length-1;j>i;j--){ C8(0|XX
if(data[j] SortUtil.swap(data,j,j-1); "0z4mQ}>N
} XN3'k[
} wjOJn]
} (&_~eYZU
} e%7#e%1s
|a'$v4dCF
} s4=EyBI
=#{q#COK$
选择排序: D_`~$QB`,
7o7FW=^
package org.rut.util.algorithm.support; dn_l#$ U
.8[uEQ_L
import org.rut.util.algorithm.SortUtil; I-Hg6WtB
;1r|Bx <5
/** 6J-=6t|
* @author treeroot \t=#MzjR
* @since 2006-2-2 .^ba*qb`{
* @version 1.0 >Wd_?NaI
*/ ^7*zi_Q
public class SelectionSort implements SortUtil.Sort { S]&aDg1y}
!rZZ/M"i
/* - Sn]`
* (non-Javadoc) B_3N:K Y
9
* UzV78^:,iD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h`p=~u +
*/ QUz4 Kt
public void sort(int[] data) { <e@4;Z(h04
int temp; lpbcpB
for (int i = 0; i < data.length; i++) { 4#B56f8
int lowIndex = i; \34:]NM
for (int j = data.length - 1; j > i; j--) { (7??5gjh
if (data[j] < data[lowIndex]) { -V'Y^Df
lowIndex = j; |#(y?! A^
} cCG!X%9
} _.m|Ml,`{
SortUtil.swap(data,i,lowIndex); :{KpnJvd
} &IG*;$c!
} nHLMF7\
~svea>Fmr
} bq}`jP~#
J)H*tzg
Shell排序: A5s;<d0
dvAz}3p0]
package org.rut.util.algorithm.support; q{L-(!uz7_
wf^p?=Ke
import org.rut.util.algorithm.SortUtil; AU8sU?=
!~xlze
/** :=:m4UJb
* @author treeroot =8Z-ORW51
* @since 2006-2-2 }E&:
* @version 1.0 =9:gW5F69
*/ {WTy/$ Qk
public class ShellSort implements SortUtil.Sort{ 6|4ID"
IJ7wUZp"
/* (non-Javadoc) Ir Y\Q)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) onIZ&wrk
*/ 5>VX]nE3!
public void sort(int[] data) { Z4sS;k]}
for(int i=data.length/2;i>2;i/=2){ MIqH%W.ru
for(int j=0;j insertSort(data,j,i); okO\A^F
} ]\/"-Y#4Q
} 3sl6$NKo
insertSort(data,0,1); 9&Z+K'$=
} xiqeKoAD
T sdgg?#
/** Dnd
* @param data MieO1l
* @param j x-b}S1@
* @param i @yF>=5z:
*/ blkPsp)m"
private void insertSort(int[] data, int start, int inc) { nx%eq,Pq
int temp; Ou+b ce
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i*T
-9IP
} AN)r(86L
} u>*qDr*d
} ^AoX|R[1%
a>,Zp*V(
} 6!([Hu#= *
G[{Av5g mx
快速排序: G\~?.s|^
zd {sw}
package org.rut.util.algorithm.support; .dwbJT
6d3YLb4M$i
import org.rut.util.algorithm.SortUtil; .Y^pDR12
|fo#pwX
/** $Xqc'4YOZ
* @author treeroot n"@){:{4?
* @since 2006-2-2 h+j*vX/!
* @version 1.0 & u6ydN1xe
*/ KWM}VZY:Z
public class QuickSort implements SortUtil.Sort{ 7R,;/3wWjG
Uz%ynH
/* (non-Javadoc) % pAbkb3m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q(v|@l|)yO
*/ bEmzigN[
public void sort(int[] data) {
6NSSuK3
quickSort(data,0,data.length-1); .eyJ<b9
} JkKbw&65
private void quickSort(int[] data,int i,int j){ sj6LrE=1
int pivotIndex=(i+j)/2; Oc5f8uv
file://swap U
U#tm
SortUtil.swap(data,pivotIndex,j); VHv L:z
[p]UM;+
int k=partition(data,i-1,j,data[j]); Q`Rn,kCVy
SortUtil.swap(data,k,j); C
u1G8t-
if((k-i)>1) quickSort(data,i,k-1); B;2#Sa.
if((j-k)>1) quickSort(data,k+1,j); =,X*40=
Mo oxT7
} D$E#:[
/** FU;a
{irB
* @param data "Jdi>{o8
* @param i 8/;@4^Ux
* @param j hBhbcWD,ka
* @return *w}r:04F
*/ $'yWg_(
private int partition(int[] data, int l, int r,int pivot) { j3u!lZ}U
do{ *w/N>:V0p
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Iz>\qC}
SortUtil.swap(data,l,r); \S{ihS@J
} {Z178sik
while(l SortUtil.swap(data,l,r); d<E2=WVB6
return l; U~dqxR"Q
} WC
b5
?yu@eo
} <&bBE"U4
(0rcLNk{|
改进后的快速排序: 8G3.bi'q
)}Cf6m}
package org.rut.util.algorithm.support; yw1Xxwc
:)h4SD8Y
import org.rut.util.algorithm.SortUtil; P/Y)Yx_(
?[%.4i;-h
/** @q{.
* @author treeroot 'ITZz n*
* @since 2006-2-2 :Y4Sdj
* @version 1.0 F*-'8~T
*/
GB,ub*|
public class ImprovedQuickSort implements SortUtil.Sort { ID,os_ T=
5JhpBx/>o=
private static int MAX_STACK_SIZE=4096; $4og{
private static int THRESHOLD=10; LLoV]~dvUu
/* (non-Javadoc) *z0Rf;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'z@]hm#
*/ C:f^&4
3
public void sort(int[] data) { J|HV8
int[] stack=new int[MAX_STACK_SIZE]; 7e D`
is
ch0cFF^]
int top=-1; xn)F(P 0kv
int pivot; vG=Pi'4XXo
int pivotIndex,l,r; i~*6JB|
dKL9}:oUa
stack[++top]=0; MYR\W*B'b
stack[++top]=data.length-1; rA@|nL{
P2U4,?_e
while(top>0){ %CgmZTz~<
int j=stack[top--]; \Rha7O
int i=stack[top--]; K9K.mGYc
OC\cN%qlw
pivotIndex=(i+j)/2; 4`7~~:W!M5
pivot=data[pivotIndex]; }g[Hi`
!~j9Oc^
SortUtil.swap(data,pivotIndex,j); @Y+kg
:R3&R CTZ
file://partition 7
Rc/<,X
l=i-1; H)y_[:[
r=j; {n S(B
do{ E;"VI2F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %f(4jQ0I
SortUtil.swap(data,l,r); aD~S~L!
} B =DV!oUg
while(l SortUtil.swap(data,l,r); {yi!vw
SortUtil.swap(data,l,j); PAVlZ}kj
R/2L9Lcv
if((l-i)>THRESHOLD){ s"8z q;)
stack[++top]=i; 7JY9#+?p>
stack[++top]=l-1; jT;'T$
} '|M} 3sL
if((j-l)>THRESHOLD){ :73T9/
stack[++top]=l+1; +RK/u
stack[++top]=j; F(,SnSam
} xx?0Ftuq
<YWu/\{KT
} ol_&epG;ST
file://new InsertSort().sort(data); 3;!a'[W&p
insertSort(data); t=[/L]!
} 472'P
/** H
'nLC,
* @param data 9mpQusM
*/ [yRqSB
private void insertSort(int[] data) { 5Iv"
int temp; ]0{,P
!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =E~_F>SD
} *6v5JH&K
} cc"<H}g>`
} aQso<oK
jank<Q&w
} XW{cC`&
O[=W%2I!i
归并排序: aecvz0}@R
lDs C>L-F
package org.rut.util.algorithm.support; 2[KHmdgtB
rj<-sfs
import org.rut.util.algorithm.SortUtil; /]nrxT
&(20*Vn,O
/** m# ^).+
* @author treeroot :vC+}.{p
* @since 2006-2-2 a$LoQ<f_
* @version 1.0 ww\2
*/ nYK!'x$
public class MergeSort implements SortUtil.Sort{ b_@bS<wsF}
(. ,{x)H
/* (non-Javadoc) .O
PBET(gv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RLDu5
*/ };cH5bYF
public void sort(int[] data) { }BCxAwD4
int[] temp=new int[data.length]; M/}i7oS]
mergeSort(data,temp,0,data.length-1); P{8<U8E
}
<XnxAA
1w>G8
private void mergeSort(int[] data,int[] temp,int l,int r){ *(VwD)*
int mid=(l+r)/2; az Oib=3fz
if(l==r) return ; m9Dg%\B
mergeSort(data,temp,l,mid); G<t_=j/r
mergeSort(data,temp,mid+1,r); ]Vf2Mn=]"
for(int i=l;i<=r;i++){ _6yrd.H
temp=data; 4WQ
96|F
} ;S+"z;$m
int i1=l; QFEc?sEe
int i2=mid+1; T{ /\q 5
for(int cur=l;cur<=r;cur++){ kgRgHkAH~
if(i1==mid+1) B 5va4@
data[cur]=temp[i2++]; e?dR'*-z
else if(i2>r) 6Kd,(DI
data[cur]=temp[i1++]; .~4DlT
else if(temp[i1] data[cur]=temp[i1++]; QST-!`]v
else SwhArvS
data[cur]=temp[i2++]; e\]CZ5hs3
} 0a)LZp|
} DZ5h<1
_[J>GfQd
} /6p7k
~&_BT`a
改进后的归并排序: vslN([@JR
L$f:D2Ei
package org.rut.util.algorithm.support; Fi#b0S
U9q6m3#$
import org.rut.util.algorithm.SortUtil; Za1VJ5-
-O[9{`i]
/** t$*CyYb{@
* @author treeroot y1Yrf,E
m=
* @since 2006-2-2 Hp3T2|uL
* @version 1.0 X(K5>L>
*/ )<%IY&\
public class ImprovedMergeSort implements SortUtil.Sort { b_oUG_B3]
"H)D~K~*
private static final int THRESHOLD = 10; z)pp{
rh(77x1|(G
/* ZRoOdo94
* (non-Javadoc) M{U7yE6*j*
* MY>o8A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u-~?ylh
*/ @!Q\|
<
public void sort(int[] data) {
ZN(@M@}
int[] temp=new int[data.length]; I~7eu&QZ
mergeSort(data,temp,0,data.length-1); &?yVLft
} irzWk3@:
VXu1Y xY
private void mergeSort(int[] data, int[] temp, int l, int r) { >J@hqW
int i, j, k; }9(:W </}
int mid = (l + r) / 2; a(eUdGJ
if (l == r) mybjcsV4
return; ZCCwx71j
if ((mid - l) >= THRESHOLD) FtxmCIVIV~
mergeSort(data, temp, l, mid); bA3pDt).p
else .tRWL!
insertSort(data, l, mid - l + 1); JUC62s#_z
if ((r - mid) > THRESHOLD) ;=?KQq f
mergeSort(data, temp, mid + 1, r); Kyq/o-
else n4Eqm33
insertSort(data, mid + 1, r - mid); z8n]6FDiE
=Ev*Q[
for (i = l; i <= mid; i++) { q|ww fPez7
temp = data; R9V v*F]m@
} 5y|/}D>
for (j = 1; j <= r - mid; j++) { a`uHkRX
)U
temp[r - j + 1] = data[j + mid]; ,;-55|o\V
} ]abox%U=%
int a = temp[l]; _l!TcH+e
int b = temp[r]; +;wu_CQu
for (i = l, j = r, k = l; k <= r; k++) { <Q?X'.
if (a < b) { <YBA
7i
data[k] = temp[i++]; HESORa;
a = temp; >2?O-WXe
} else { 0=Z_5.T>
data[k] = temp[j--]; D<*#. >
b = temp[j]; 66l$}+|Zzc
} xk8P4`;d$
} &+V|L dh
} /I3>u
kkE1CHY
/** 7tr;adjs
* @param data c_^-`7g
* @param l 9hIcnPu
* @param i O(oGRK<xM
*/ ~Fd<d[b?
private void insertSort(int[] data, int start, int len) { eZ~ZWb, %
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rZv5>aEI
} cA{zyq26
} geRD2`3;
} .I&]G
} <UcbBcW,
_e3kO6X
堆排序: nWAx!0G
DU/WB
package org.rut.util.algorithm.support; MH,vn</Uw
@ \(*pa
import org.rut.util.algorithm.SortUtil; Dk XB
L5tSS=
/** 5w+X
* @author treeroot LE:nmo
* @since 2006-2-2 kmXaLt2Z
* @version 1.0 .oFkx*Ln
*/ >>C(y?g
public class HeapSort implements SortUtil.Sort{ HO(9)sK
^q0Ox&X
/* (non-Javadoc) $pm5G} .
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z@I.socA
*/ k6vY/)-S
public void sort(int[] data) { v&GBu
MaxHeap h=new MaxHeap(); ;8
D31OT
h.init(data); k )T;WCia
for(int i=0;i h.remove(); sKT GZA
System.arraycopy(h.queue,1,data,0,data.length); )0I;+9:D=
} '8 ~E
kU5chltGF
private static class MaxHeap{ <ZV !fn
:3# t;
void init(int[] data){ ;-1yG@KG
this.queue=new int[data.length+1]; ,nELWzz%{
for(int i=0;i queue[++size]=data; nRmZu\(Ow|
fixUp(size); A9[ELD>p
} x;cjl6Acm
} x\m !3
SBY
private int size=0; gL+8fX2G6
"=uphBZog
private int[] queue; eh-/,vmRa
HV^*_
public int get() { +8 avA:o
return queue[1]; $DOBC@xxzT
} b{KpfbxcI
9oL/oL-J/
public void remove() { H"H&uA9"
SortUtil.swap(queue,1,size--); 6jiz$x
fixDown(1); jMvWS71
} B|-E3v:f4
file://fixdown h<50jnH!
private void fixDown(int k) { A7!=`yA$
int j; }l/!thzC
while ((j = k << 1) <= size) { h4 s!VK1X
if (j < size %26amp;%26amp; queue[j] j++; R&BbXSIDX
if (queue[k]>queue[j]) file://不用交换 vt" 7[!O
break; h9,ui^#d$
SortUtil.swap(queue,j,k); {%K(O$H#
k = j; %z&=A%'a
} ]R8}cbtU
} ROr..-[u
private void fixUp(int k) { Pd@y+|
while (k > 1) { ~7tG%{t%
int j = k >> 1; u:Q_XXT5
if (queue[j]>queue[k]) S"iz
fQ@
break; UGNFWZ c
SortUtil.swap(queue,j,k); T=|oZ
k = j; 'G!w0yF
} \h DH81L
} n"'1.
p-H q\DP
} ).0h4oHSj
R!i9N'gGG(
} :_%
ON{&-
SortUtil: ceDe!Iu
H=OKm
package org.rut.util.algorithm; xA DjQ%B
.R/`Y)4
import org.rut.util.algorithm.support.BubbleSort; |@]`" k
import org.rut.util.algorithm.support.HeapSort; }%B^Vl%ZZ
import org.rut.util.algorithm.support.ImprovedMergeSort; HY.??
5MH
import org.rut.util.algorithm.support.ImprovedQuickSort; L=u>}?!,Fj
import org.rut.util.algorithm.support.InsertSort; UC)-Fd
import org.rut.util.algorithm.support.MergeSort; T&Y?IE}
import org.rut.util.algorithm.support.QuickSort; 3_JxpQg
import org.rut.util.algorithm.support.SelectionSort; E"e <9
import org.rut.util.algorithm.support.ShellSort; $=/.oh
5+<<:5_6l
/** Zb)j2Xgl
* @author treeroot
[]D@"Bz
* @since 2006-2-2 $okGqu8z.O
* @version 1.0 "=0#pH1o
*/ ppt`5F O
public class SortUtil { R^Wed
public final static int INSERT = 1; sEj?,1jk
public final static int BUBBLE = 2; b$kCyOg
public final static int SELECTION = 3; ULq#2l
public final static int SHELL = 4; d>z?JDt
public final static int QUICK = 5; =6Dz<Lq
public final static int IMPROVED_QUICK = 6; Z[Gs/D
public final static int MERGE = 7; E"D+CD0
public final static int IMPROVED_MERGE = 8; Sq,ZzMw
public final static int HEAP = 9; 4@D 8{?$~Q
N-fGc?E
public static void sort(int[] data) { \e%H5Wx
sort(data, IMPROVED_QUICK); \vVGfG?6
} zmH 8#
private static String[] name={ kK]JN
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /xmUu0H$R
}; >1[ Hk0 <x
Omkl|l9
private static Sort[] impl=new Sort[]{ X8uVet]D~
new InsertSort(), 6$qn'K$
new BubbleSort(), E\2|
new SelectionSort(), )J&