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。 RMu~l@
插入排序: JP[K;/
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package org.rut.util.algorithm.support; >U27];}y
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import org.rut.util.algorithm.SortUtil; fuf"Ae
/** )zdQ1&@
* @author treeroot J}K$(;:
* @since 2006-2-2 n9ej7oj
* @version 1.0 \\;jw[P0
*/ p6!x=cW
public class InsertSort implements SortUtil.Sort{ sS'm!7*(3
VTY 5]|;
/* (non-Javadoc) <}9lZEqY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e=m42vIB-
*/ Cjlk
public void sort(int[] data) { Z o(rTCZX
int temp; e1Hgw[l`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H8}oIA"b
} X2~!(WxU F
} =^,m` _1
} N2<!}Eyu
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} i2SR{e8:GF
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冒泡排序: '3^'B03
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package org.rut.util.algorithm.support; oV78Hq6
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import org.rut.util.algorithm.SortUtil; U 0P~
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/** vy:Z /1q
* @author treeroot PtiOz
:zV
* @since 2006-2-2 5vnrA'BhBU
* @version 1.0 ~6LN6}~|.
*/ @*KZ}i@._
public class BubbleSort implements SortUtil.Sort{ 5#E`=C%
&`2)V;t
/* (non-Javadoc) 8$Y9ORs4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A#YrWW
*/ hf&9uHN%7m
public void sort(int[] data) { f
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int temp; 88wa7i*
for(int i=0;i for(int j=data.length-1;j>i;j--){ ri-b=|h2j
if(data[j] SortUtil.swap(data,j,j-1); 1\I}2;
} q9s=~d7
} Jij*x>K>y
} ;vjOUn[E
} V1B5w_^>h'
tf`^v6m%]
} Z=vU}S>r|v
OYn}5RN
选择排序: yEE*B:
Zp=U
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package org.rut.util.algorithm.support; }b.%Im<3R
v"Es*-{B
import org.rut.util.algorithm.SortUtil; |Ds1
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/** PALc;"]O
* @author treeroot :,6\"y-
* @since 2006-2-2 aO4?m+
* @version 1.0 draN0vf
*/ &6nWzF
public class SelectionSort implements SortUtil.Sort { ~oY^;/ j
kc&U'&RgY
/* \(2sW^fY
* (non-Javadoc) sD#.Oq4&]y
* oW6XF-yM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40m -ch6Q
*/ ^Xh^xL2cn
public void sort(int[] data) { -PR N:'T
int temp; v mk2{f,g
for (int i = 0; i < data.length; i++) { C!bUI8x
z
int lowIndex = i; E+;7>ja
for (int j = data.length - 1; j > i; j--) { </*6wpN
if (data[j] < data[lowIndex]) { h2fNuu"
lowIndex = j; }:)&u|d_
} #?:l b1
} gc$l^`+M
SortUtil.swap(data,i,lowIndex); O3kA;[f;
} k~w*W X'
} ]~3V}z,T*
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} h(EhkCf
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Shell排序: 6qnzBA7
c9h6C
package org.rut.util.algorithm.support; Wvf
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import org.rut.util.algorithm.SortUtil; E hMNap}5"
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/** Lw>N rY(Y
* @author treeroot BnasI;yWb
* @since 2006-2-2 wz%NbLy-
* @version 1.0 *gWwALGo5
*/ $-sHWYZ
public class ShellSort implements SortUtil.Sort{ p0vVkdd
?gGHj-HYJ
/* (non-Javadoc) :"/d|i`T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9'bwWBf7
*/ (<C3Vts))
public void sort(int[] data) { pZy~1L
for(int i=data.length/2;i>2;i/=2){ @~a%/GQ#n*
for(int j=0;j insertSort(data,j,i); brUF6rQ
} 1iF1GkLEq
} II,8O
insertSort(data,0,1); Qzw;i8n{
} {R`[kt
P~X2^bw
/** EXqE~afm2
* @param data }0Ed]
* @param j CzrC%x y
* @param i |&i<bqLw:
*/ {"KMs[M
private void insertSort(int[] data, int start, int inc) { 7-fb.V9
int temp; R (n2A$
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &Au@S$ij
} }k.Z~1y
} ncT&Gr
} '6%2.[o
`e}B2;$A3
} X!EP$!
"3Y0`&:D
快速排序: :^h$AWR^f
-zfR)(zG
package org.rut.util.algorithm.support; LZxNAua
4BpZJ~(p
import org.rut.util.algorithm.SortUtil; "fOV^B
s!$a\ k
/** K[zVa
* @author treeroot AH~E )S
* @since 2006-2-2 Pa:|_IXA
* @version 1.0 9_/:[N6|c|
*/ FGq[\B
public class QuickSort implements SortUtil.Sort{ SXP]%{@R/
am6L8N
/* (non-Javadoc) iDqoa\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U| R_OLWAg
*/ S{T >}'y
public void sort(int[] data) { ]3Sp W{=^(
quickSort(data,0,data.length-1); |M;7>'YNC*
} =[ 7A v>
private void quickSort(int[] data,int i,int j){ 8zW2zkv2|#
int pivotIndex=(i+j)/2; =41?^1\
file://swap <lJ345Q
SortUtil.swap(data,pivotIndex,j); g*+>H1}
N4TV
int k=partition(data,i-1,j,data[j]); (X*^dO
SortUtil.swap(data,k,j); :?1Dko^
if((k-i)>1) quickSort(data,i,k-1); 8'y$M] e9n
if((j-k)>1) quickSort(data,k+1,j); 0?|<I{z2
NL+N%2XG7
} wi{3/
/** ('+d.F[109
* @param data F#5~M<`.o
* @param i yyTnL 2Y9
* @param j /PXzwP_(A
* @return EQSQFRk;
*/ 2&J)dtqz
private int partition(int[] data, int l, int r,int pivot) { {Ou1KDy#)
do{ mgU<htMr1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5L}/&^E#p
SortUtil.swap(data,l,r); W=+ Y|R!
} m+z&Q
while(l SortUtil.swap(data,l,r); =~LJ3sIX
return l; Z*6IW7#
} 4 s9LB
;*2Cm'8E
} }4X0epPp;:
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改进后的快速排序: rEz^
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package org.rut.util.algorithm.support; `N8O"UcoBo
#}5uno
import org.rut.util.algorithm.SortUtil; FW DNpr
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/** * kh tJ]=
* @author treeroot 6j|{`Zd)G
* @since 2006-2-2 )%fH(ns(
* @version 1.0 (S Yln>o
*/ gbD KE{
public class ImprovedQuickSort implements SortUtil.Sort { 2y1Sne=<Kb
HTTCTR
private static int MAX_STACK_SIZE=4096; lPAQ3t!,
private static int THRESHOLD=10; SSzIih@u
/* (non-Javadoc) E2+`4g@{8<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %mgE;~"&
*/ YtLt*Ig%
public void sort(int[] data) { 86a\+Kz%%L
int[] stack=new int[MAX_STACK_SIZE]; Q\0'lQJdy
es0hm2HT3
int top=-1; sV*H`N')S
int pivot; )0k53-h&
int pivotIndex,l,r; }c:M^Ff
3Tm+g2w2V8
stack[++top]=0; [dV L&k<P
stack[++top]=data.length-1; bpa?C
3=V&K-
while(top>0){ 'dc#F3
int j=stack[top--]; ZS o)
int i=stack[top--]; e]$s
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pivotIndex=(i+j)/2; X2"/%!65{
pivot=data[pivotIndex]; }Ou}+^Bc
+ LJ73
!
SortUtil.swap(data,pivotIndex,j); u)Whr@m
"d}Gp9+$VY
file://partition GTxk%
l=i-1; MiX 43Pk]
r=j; 4Wp=y
do{ ;mi%F3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bcz:q/f}@
SortUtil.swap(data,l,r); 9:lFo=
} oxtay7fx
while(l SortUtil.swap(data,l,r); F((4U"
SortUtil.swap(data,l,j);
05 ^h"
/BL4<T f
if((l-i)>THRESHOLD){ tX~w{|k
stack[++top]=i; /dIzY0<aO
stack[++top]=l-1; dDGQ`+H9
} ]eV8b*d6
if((j-l)>THRESHOLD){ K:WDl;8(d
stack[++top]=l+1; 62NsJ<#>
stack[++top]=j; g0E'g
} I]_5}[I
:rP=t ,
} asqV~n
file://new InsertSort().sort(data); 9A#i_#[R
insertSort(data); iN.n8MN=I
} $<OD31T
/** tQ601H>o
* @param data !H\F2Vxs
*/ Pc]HP
private void insertSort(int[] data) { ^=*;X;7
int temp; ]I6 J7A[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4mbBmQV$#
} u$`a7Lp,n
} lk =<A"^S
} EiaW1Cs
wdoR%b{M
} dgP3@`YS
#p{4^
归并排序: "uf%iJ:%
*=xr-!MEk
package org.rut.util.algorithm.support; _','9|
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import org.rut.util.algorithm.SortUtil; og>uj>H&
f,Ghb~y
/** O&hTNIfi
* @author treeroot e~(5%CO>#j
* @since 2006-2-2 -7|H}!DFT
* @version 1.0 $Z>'Jp
*/ o;RI*I
public class MergeSort implements SortUtil.Sort{ A<fG}q1#
UL9n-M=
/* (non-Javadoc) [.}oyz;}N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;O#>Y
*/ \^1E4C\":
public void sort(int[] data) { . 'yCw#f
int[] temp=new int[data.length]; $`'/+x"%
mergeSort(data,temp,0,data.length-1); ^/k*h J{
} :2)/FPL6
d0 /#nz
private void mergeSort(int[] data,int[] temp,int l,int r){ ll?X@S
int mid=(l+r)/2; (Awm9|.{+
if(l==r) return ; |+"(L#wk
mergeSort(data,temp,l,mid); t3^&;&[
mergeSort(data,temp,mid+1,r); %xt^698&X
for(int i=l;i<=r;i++){ V^~:F
temp=data; Xlt|nX~#;
} >KKMcTOYY
int i1=l; !1b;F*H
int i2=mid+1; )WFr</z5bA
for(int cur=l;cur<=r;cur++){ uvS)8-o&F
if(i1==mid+1) E<*xx#p
data[cur]=temp[i2++]; S`]k>'
l
else if(i2>r) YA5g';$H*
data[cur]=temp[i1++]; [a<SDMR
else if(temp[i1] data[cur]=temp[i1++]; -D~%|).'
else L{Vqh0QD&
data[cur]=temp[i2++]; SZCze"`[
} K"@M,8hb
} Uoix
2 8u_!f[
} j*m%*_kO
9(<@O%YU
改进后的归并排序: YZJyk:H\
r:TH]hs12+
package org.rut.util.algorithm.support; wwcBsJ1{
^LzF@{ G
import org.rut.util.algorithm.SortUtil; _h1mF<\ X^
S$XSei_q
/** _GPl gp:
* @author treeroot YKf0dh;O
* @since 2006-2-2 *DhiN
* @version 1.0 }W,[/)MO
*/ UkGCyGyZ[
public class ImprovedMergeSort implements SortUtil.Sort { {BU;$
w@fi{H(R
private static final int THRESHOLD = 10; ( &x['IR
.6 ?U@2
/* LjHVJSC
* (non-Javadoc) vY`s'%WV
* Ny)X+2Ae
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C+&l<
fM&
*/ Eu04e N
public void sort(int[] data) { seeBS/%
int[] temp=new int[data.length]; ZqO^f*F>h
mergeSort(data,temp,0,data.length-1); 18:%~>.!
} 0+b1vhQ
b5n'=doR/I
private void mergeSort(int[] data, int[] temp, int l, int r) { lsNd_7k
int i, j, k; -d:Jta!}{
int mid = (l + r) / 2; kylVH!
@l
if (l == r) @pU)_d!pJ
return; %ULr8)R;
if ((mid - l) >= THRESHOLD) Dv`c<+q(#
mergeSort(data, temp, l, mid); \xoP)Ub>
else 0#^v{DC
insertSort(data, l, mid - l + 1); <1M-Ro?5k
if ((r - mid) > THRESHOLD) ;t`&n['N>
mergeSort(data, temp, mid + 1, r); "g8M0[7e3
else r",GC]
insertSort(data, mid + 1, r - mid); Uf+%W;}
Q&bM\;Ml
for (i = l; i <= mid; i++) { ]e@Oiq
temp = data; Pk)1WK7E
} QP J4~
for (j = 1; j <= r - mid; j++) { \dQNLLg/
temp[r - j + 1] = data[j + mid]; geCM<]
} K",N!koj
int a = temp[l]; r]36zX v
int b = temp[r]; jrh43
\$*
for (i = l, j = r, k = l; k <= r; k++) { v/=}B(TDF
if (a < b) { Ooy7*W';
data[k] = temp[i++]; jo@J}`\Zt
a = temp; jW@Uo=I[
} else { *-p}z@8
data[k] = temp[j--]; Mf``_=K
b = temp[j]; 8)I^ t81
} H$4:lH&(
} h 9W^[6
} lnR{jtWP
|ZBI *
/** #Mw8^FST
* @param data #>+ HlT
* @param l Y:a]00&)#Y
* @param i AYx{U?0p
*/ )K
private void insertSort(int[] data, int start, int len) { pyvSwD5t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %84rL?S
} h.t-`k7
} E< fV Z,
} \)|hogI|f
} !C:$?oU
|$b}L7_
堆排序: ekCC5P!
J7p),[>I<
package org.rut.util.algorithm.support; [cp+i^f
J/*`7Pd
import org.rut.util.algorithm.SortUtil;
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JaGtsi9%.
/** E?0%Z&1h
* @author treeroot |
%Vh`HT
* @since 2006-2-2 XOS[No~
* @version 1.0 %bfQ$a:
*/ <UQbt N-B\
public class HeapSort implements SortUtil.Sort{ Dm<A
^u8
n6a`;0f[R
/* (non-Javadoc) kW&TJP+5*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E~oOKQ5W
*/ pIX`MlBdF
public void sort(int[] data) { ?(i{y~
MaxHeap h=new MaxHeap(); emN*l]N
h.init(data); }9fTF:P
for(int i=0;i h.remove(); mL: sJf
System.arraycopy(h.queue,1,data,0,data.length); !Q0w\j h
} oM`0y@QCf
L/G6Fjg^
private static class MaxHeap{ ~IN>3\j
c\ l kD-\
void init(int[] data){ @J`"[%U
this.queue=new int[data.length+1]; Q$@I"V&G.
for(int i=0;i queue[++size]=data; 9zy!Fq
fixUp(size); ZExlGC
} TbW38\>.R
} jtc]>]6i
NHZz _a=
private int size=0; s,&Z=zt0R
JnM["Q=`
private int[] queue; '(|ofJe!
_zi|
public int get() { WEi2=3dV
return queue[1]; 0Z{ZO*rK
} ~FG]wNgS
:X
(=z;B;N
public void remove() { G*P#]eO
SortUtil.swap(queue,1,size--); ^3L0w}#
fixDown(1);
cHt#us
} |_@>*Vmg
file://fixdown ,1o FPa{?
private void fixDown(int k) { j+
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int j; VS8Rx.?
while ((j = k << 1) <= size) { ^,T(mKS
if (j < size %26amp;%26amp; queue[j] j++;
}?Ai87-{
if (queue[k]>queue[j]) file://不用交换 j HJ`,#
break; L0WN\|D
SortUtil.swap(queue,j,k); b!5~7Ub.No
k = j; XuM'_FN`A<
} 2!=f hN
} Gu\q%'I
private void fixUp(int k) { 9m~p0 ILh
while (k > 1) { *wB1,U{
int j = k >> 1; 4u})+2W
if (queue[j]>queue[k]) n8ZZ#}Nhg
break; q'Tf,a
SortUtil.swap(queue,j,k); ExL0?FemWV
k = j; L>4"(
} +OWX'~fd<
} 'kO!^6=4M
lp%pbx43s
} .jjG(L
~%kkeh\j
} P:MT*ra*,
t=W}SH
SortUtil: mSl.mi(JiZ
Trz@~d/[,n
package org.rut.util.algorithm; ok\vQs(a
Q:d]imw!O
import org.rut.util.algorithm.support.BubbleSort; 0[?Xxk}s0
import org.rut.util.algorithm.support.HeapSort; ?QdWrE_
import org.rut.util.algorithm.support.ImprovedMergeSort; :(*V?WI
import org.rut.util.algorithm.support.ImprovedQuickSort; K:#I
import org.rut.util.algorithm.support.InsertSort; a'yK~;+_9
import org.rut.util.algorithm.support.MergeSort; ML56k~"BL
import org.rut.util.algorithm.support.QuickSort; )W
_v:?A9
import org.rut.util.algorithm.support.SelectionSort; 3K0A)W/YEs
import org.rut.util.algorithm.support.ShellSort; OU
$#5
ud@%5d
/** y,,dCca
* @author treeroot -ifFbT+x
* @since 2006-2-2 4yA+h2
* @version 1.0 0rs"o-s<
*/ N]=q|D
public class SortUtil { 8\A#CQ5b
public final static int INSERT = 1; ^KT Y?
public final static int BUBBLE = 2; scz&h#0V
public final static int SELECTION = 3; [MM~H0=s
public final static int SHELL = 4; !Pfr,a
public final static int QUICK = 5; 7CURhDdk
public final static int IMPROVED_QUICK = 6; m'=Crei
public final static int MERGE = 7; uGK.\PB$
public final static int IMPROVED_MERGE = 8; a![{M<Y~
public final static int HEAP = 9; ,Ae6/D$h/
ytJ/g/,A0i
public static void sort(int[] data) { xHLlMn4M
sort(data, IMPROVED_QUICK); ShP^A"Do
} .:%0E`E
private static String[] name={ Zaf:fsj>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jZkcBIK2
}; aP@N)"
#rQ2gx4
private static Sort[] impl=new Sort[]{ 2E)-M9ds
new InsertSort(), ,Np0wg0
new BubbleSort(), k|PN0&J
new SelectionSort(), M; tqp8
new ShellSort(), %axh`xK#
new QuickSort(), U}rU~3N
new ImprovedQuickSort(), \aUC(K~o\;
new MergeSort(), V1`o%;j
new ImprovedMergeSort(), RmeD$>7
new HeapSort() yfjWbW
}; ?(F6#"/E
.glA
gt
public static String toString(int algorithm){ ;)z:fToh
return name[algorithm-1]; Y0dEH^I
} x,@B(9No
GdxnpE
public static void sort(int[] data, int algorithm) { V]e 8a"/[{
impl[algorithm-1].sort(data); $$;M^WV^?.
} s.QwSbw-g
d_E/8R_$L
public static interface Sort { rCbDu&k]
public void sort(int[] data); SaAFz&WRl
} Q}K"24`=
b;W3j
public static void swap(int[] data, int i, int j) { &4x}ppX
int temp = data; 0#s"e}@v
data = data[j]; )|R)Q6UJ
data[j] = temp; t[;LD_
} )9'K($
} 7<#U(,YEA